US2224146A

US2224146A - Lasting machine

Info

Publication number: US2224146A
Application number: US285553A
Authority: US
Inventors: Fred C Eastman
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1939-07-20
Filing date: 1939-07-20
Publication date: 1940-12-10
Anticipated expiration: 1957-12-10

Description

Dec. 10, 1940. F, EASTMAN 2,224,146

LASTING MACHINE Filed July 20, 1939 7 Sheets-Sheet l pigfl.

Dec. 10, 1940. F. c. EASTMAN 2,224,146

LASTING MACHINE Filed July 20, 1959 TSheets-Sheet 2 Dec. 10, 1940. C EASTMAN 2,224,146

LASTING MACHINE Filed July 20, 1959 7 Sheets-Sheet 3 D 1940- F. c. EASTMAN 2,224,146

LAS'IING MACHINE Filed July 20, 1939 "I Sheets-S heet s Flgflfi. 374

it 10 as I 376 26 r 14 m. 36% W Mam 70F '7 Sheets-Sheet 7 F. c. EASTMAN LASTING MACHINE Filed July 20, 1939 illiill/ w fi @236 .aaqtm u umwk mlun r T 1 WR SQE Dec. 10, 1940.

Patented Dec. 10, 1940 UNITED STATES PATENT OFFICE LASTIN G MACHINE Jersey Application July 20, 1939, Serial No. 285,553

62 Claims.

This invention relates to lasting machines, and is herein illustrated as embodied in modifications of a power-operated machine organization of the character disclosed in United States Letters Patcut No. 2,160,846, granted on June 6, 1939, on a Joint application of mine and A. F. Pyms, one of the objects of the present invention being to adapt such a machine for lasting the toes of shoes of that type in which the margin of the lasted upper over the insole lies throughout its width in substantially parallel relation to the bottom of the last and in which cement is used to secure the margin of the upper to the insole. It is to be understood, however, that the invention is not limited to an organization of that character or, in some of its aspects, to toe-lasting machines, and that as to some of its features also it is not limited to the lasting of shoes of the above-mentioned type.

In one of its aspects, the invention provides, in a lasting machine, novel means for heating cement previously applied to the shoe for securing the upper in lasted relation to the insole. Such cement may be thermoplastic cement ap- 25 plied to the insole and permitted to harden prior to the lasting operation, or may be rubber latex applied, for example, to both the insole and the margin of the upper. In order to soften or activate such thermoplastic cement or to render latex more effectively adhesive by partially drying it, the machine herein shown is provided with a heating device which occupies a position opposite the bottom of the toe end of the insole when the Work is initially presented to the machine and is moved into contact with cement on the insole after the starting of the power operation of the machine. Contact of the device with the cement is terminated automatically by the machine, and to allow time for the proper activation of thermoplastic cement the construction herein shown is such that the machine is brought automatically to a stop after the device has been applied to the cement and is automatically started again after an adjustably variable interval. In accordance with a further feature of the invention the heating device is movable away from the insole by pressure of the upper against it as the margin of the upper is laid inwardly over the insole, the device applying heat to the margin of the upper to prepare it better for contact with the thermoplastic cement or, if latex is used, applying heat to the latex on the upper. In addition to its heating action, the heating device in the construction shown serves also as a holddown for the toe end of the insole and thereafter as a retarder" in contact with the upper as the latter is wiped inwardly over the insole by toe-embracing wipers, clamping the margin of the upper against the wipers and spreading it outwardly over them to cause them to wipe it more tightly and smoothly 5 over the insole. It is, in fact, within the scope of the invention to provide such a holddown and retarder irrespective of the use of heat, the device herein shown being capable of use in an unheated condition if the character of the work renders it desirable.

In another aspect, the invention provides novel means for controlling the shoe in such manner that it is yieldingly movable heightwise in response to pressure of the overlaying means thereon in laying the margin of the upper inwardly over the insole, to insure against damage to the upper, and is thereafter subjected to more forcible control so that the margin of the upper may be pressed more firmly upon the insole. In the construction shown, in which the shoe is clamped by a shoe rest against a shoe-positioning device located opposite the bottom of the shoe, the shoe rest is controlled selectively by one or the other or both of two comparatively heavy springs when the upper is thus pressed firmly upon the insole, substantially as disclosed in the above-mentioned Letters Patent, and for purposes of this invention there is further provided a lighter spring which is yieidable in response to pressure of the overlaying means on the shoe in the overlaying operation, the shoe rest being subjected to the greater force of one or both of the heavier springs only after opportunity has been afforded for such yield of the lighter spring. More particularly, the construction shown is such that in clamping the shoe the force of the lighter spring is transmitted to the shoe rest through the heavier springs or through one of them and the heavier springs are bodily movable with the shoe rest 0 when the lighter spring yields in response to the pressure of the overlaying means on the shoe. Thereafter, through the action of a pawl-andratchet device, one or the other or both of the heavier springs are controlled positively, instead 45 of yieldingly through the lighter spring, to subject the shoe rest to the greater force required.

It will be readily recognized that the utility of this feature of the invention is not dependent upon the combination of a plurality of heavier 5 springs with the lighter spring.

In one form of construction herein disclosed the position of the shoe relatively to the lasting means is determined by a plate engaging the bottom face of the forepart of the insole and by pins extending through holes in the insole into holes in the last. In case it is not desired to provide the insoles and lasts with holes to receive such pins, the invention further providesalternative shoepositioning means having gages for use instead of the pins. As illustrated, these gages comprise a toe-end gage arranged to serve as an abutment opposite the toe-end face of the last to determine the position of the last and shoe lengthwise and formed also to determine the position of the extreme end of the last laterally, and side gages for indicating visually by reference to the opposite side edges of the shoe bottom at the previously lasted ball portion of the shoe the proper position of that portion of the shoe laterally. In the construction shown these side gages are supported on a member which is stationary during the toe-lasting operation and which supports a plate generally similar to the above-mentioned plate for engaging the bottom face of the insole, and the toe-end gage is mounted on a parallel link support for movement heightwis'e of the shoe to an inoperative position in response to movement of the wiper support in that direction to cause the wipers to wipe the upper heightwise of the last before wiping its marginal portion inwardly over the insole.

Similarly to the disclosure of the previously mentioned Letters Patent, the machine herein shown is provided with grippers which grip the margin of the toe end of the upper and pull theupper heightwise of the last in time relation to the operation of the wipers. In accordance with a further feature of this invention the gripper-operating means is so constructed as to impart to the grippers a comparatively rapid upperpulling movement heightwise of the last to subject the upper to substantial tension before the wipers wipe the upper in that direction, and thereafter a slower upper-pulling movement in the course of such action of the wipers on the upper. Such a construction has been found to produce very satisfactory results in the lasting of the upper tightly and smoothly over the toe end of the last before its margin is wiped inwardly over the insole.

The above and other features of the invention, including various novel details of construction and combinations of parts,'will now be more particularly described with reference to the accompanying drawings and thereafter pointed out in the claims.

In the drawings,

Fig. 1 is a view in right-hand side elevation of a machine in which the invention is embodied, with parts broken away;

Fig. 2 is a view mainly in right-hand side elevation, on an enlarged scale, of shoe-supporting mechanism with which the machine is provided;

Fig. 3 is a section on the line lIIIII of Fig. 2 on a still larger scale;

Fig. 4 is a section on the line IV-IV of Fig. 2;

Fig. 5 is a view partly in right-hand side elevation and partly in section of starting and stopping mechanism with which the machine is provided;

Fig. 6 is a view partly in right-hand side elevation and partly in section of a portion of the mechanism shown in Fig. 5, showing certain parts in greater detail;

Fig. '7 is a section on the line VII-VII of Fig. 5;

Fig. 8 is a section on the line VHIV]1I of Fig. 7;

Fig. 9 shows partly in right-hand side elevation and partly in section certain portions of the heating device;

Fig. 12 is a view similar to Fig. 9 of a portion of the mechanism provided for controlling the heating device, showing the parts as they appear in their initial positions;

Figs. 13 and 14 are views similar to Fig. amustrating the positions of the parts at later stages in the operation of the machine than in Fig. 9;

Fig. 15 is an inverted plan'view of shoe-positioning means shown in Fig. 9;

Fig. 16 is a view partly in right-hand side elevation and partly in section, showing alternative means which may be utilized to determine the position of the shoe;

Fig. 17 is a plan view of certain parts shown in Fig. 16;

Fig. 18 is a view in front elevation of certain parts. shown in Fig. 16, with a shoe in section;

,Fig. 19 is a section on the line XIX-XIX of Fig. 18; and

Fig. 20 is a cam chart illustrating the sequence of operations of the machine.

In View of the disclosure in the previously mentioned Letters Patent, such parts of the machine organization as are common to that disclosure will be hereinafter described only in so far as is necessary for an understanding of the present invention. As in the earlier machine, grippers are provided for gripping the margin of the upper respectively at'the end and the sides of the toe and for pulling the upper tightly over the toe end of the last, only the toe-end gripper 2 (Fig. 9), however, being herein shown. Also as in the earlier construction the upper around the toe end of the last is embraced by wipers 4 which wipe it heightwise of the last and thereafter wipe its marginal portion inwardly over the insole, these wipers in the present construction receiving movements of such extent as to wipe the margin of the upper substantially throughout its width into parallel relation to the bottom of the last. The wipers are supported on a wiper carrier 6 mounted for swinging movement heightwise of the last and for bodily movement lengthwise of the last, the wipers being closed inwardly widthwise of the last by mechanism of the same construction as disclosed in the above-mentioned Letters Patent. In time relation to the movements of the wipers the grippers receive upperpulling movements heightwise of the last and movements to spread the upper outwardly over the wipers, followed by inward swinging movements while still controlling the margin of the upper as the wipers begin to wipe the upper inwardly over the insole. The timing of these and other operations differs somewhat from the disclosure of the previously mentioned Letters Patent, as will be hereinafter more particularly explained.

For positioning the last and shoe in proper relation to the lasting instrumentalities the present machine, in the form illustrated in Fig. 9, is provided with a plate 8 having three downwardly extending lugs Ill (Fig. 15) for engaging the bottom face of the insole. to determine the position of the shoe heightwise and with respect to tipping movements, and is also provided with two pins l2 arranged to extend through holes in the insole into holes in the last to determine the position of the shoe lengthwise and laterally. The pins I2 are spaced apart widthwise of the last and are arranged to extend through holes I4 (Fig. 15) in the plate 8. The pins are fast in a holder l8 formed on the lower end of a vertically adjustable rod l8 mounted in the head of the machine, corresponding to a similar rod 22 shown in the earlier Letters Patent. The plate 8 is detachably mounted on the holder l8 to permit different plates to be used for shoes of widely different sizes and has fast thereon a stud 28 arranged to extend upwardly into a socket in the holder and provided with a hole 22 to receive the end of a spring-pressed pin 24 in the holder. By means of a knob 28 on its front end this pin may be withdrawn from the hole 22 against the resistance of a spring 28 to release the plate 8 and permit its detachment from the holder.

Substantially at the beginning of the power operation of the machine the shoe is clamped against the plate 8 by an upwardly movable toe rest 38. In the construction herein shown this toe rest comprises a pad 32 mounted on a U- shaped holder 34 which is pivotally mounted on a pin 38 for tipping movements laterally of the shoe, this pin extending through a block 31 detachably mounted on the upper end of a rod 38 which is vertically movable in-bearings in the frame in the same'manner as a similar rod 38 shown in the previously mentioned Letters Patent. A collar 48 (Fig. 1) fast on the rod 38 near its lower end serves by engagement with the frame to limit downward movement of the rod. For lifting the rod 38 to apply the toe rest to the shoe there is provided a yoke 42 (Fig. 2) slidingly mounted at its lower end on the rod and at its upper end on a sleeve 44 through which the rod extends. The yoke 42 is raised and lowered by a pair of crank arms 48 which are fast on a rock shaft 48 and are connected by links 58 to the upper end portion of the yoke. The rock shaft 48 has also fast thereon a cam-operated lever 52 (Fig. 1) for operating it. When the yoke 42 is raised by the turning of the rock shaft 48 it acts on the rod 38 through one or the other or both of two

springs

54, 56 of different strengths, as determined selectively by the operator, and also through a disk 58 located above these springs and engaging a shoulder 80 formed on the lower end of an enlarged portion of the rod 38, this disk being formed integral with the sleeve 44. The lower ends of both these springs rest on a washer 82 which is supported by nuts 84 threaded on the lower end of a sleeve 88 slidingly mounted on the rod 38. At their upper ends the

springs

54 and 58 are in engagement respectively with

concentric rings

88 and 18 which are relatively movable vertically. The ring 88 has fast thereon three upwardly extending pins 12 (Fig. 4), and the ring 18 is similarly provided with three upwardly extending pins 14. Formed in the disk 58 are three holes I8 arranged to aline with the pins 12 when the disk is in one position, as shown in Fig. 4, and three other holes 18 arranged to aline with the pins 14 when the disk is in another position, the disk being rotatable about the rod 38 into one or the other of these two positions or into a third position in which neither of the two sets of holes is in alinement with the corresponding pins. By means hereinafter described the sleeve 88 and the washer 82 are raised by the upward movement of the yoke 42, and it will be evident that in accordance with the adjustment of the disk 58 one or the other or both of the

prings

54, 58 are rendered effective in response to this movement to raise the rod 38 and the toe rest by reason of engagement of the upper ends of the appropriate pins with the disk 58. Adjustment of the disk 58 selectively to its different positions is effected by turning the sleeve 44 about the rod 38 by the operation of mechanism not herein shown in detail but of the same character as disclosed in the previously mentioned Letters Patent. In order to maintain the two sets of pins 12 and [4 always in proper relation to each other and to the holes in the disk 58 there is formed integral with the upper end of the sleeve 88, above the

rings

88 and 10, a disk 88 provided with holes through which all the pins extend, this disk being adjustably controlled by two set screws 82 which are threaded in the yoke 42 and bear respectively on opposite sides of a lug 84 on the disk.

For purposes of this invention the construction herein shown is such that neither of the

springs

54 or 56 is compressed by that upward movement of the yoke 42 whereby the toe rest is applied to and pressed against the shoe rior to the lasting operation, although one or the other or both of these springs serve as above described as means through which the toe rest is thus raised and applied to the shoe. For pressing the toe rest yieldingly against the shoe at this time by the upward movement of the yoke there is provided another spring 88 which is lighter than either of the

springs

54 or 58, these two springs being made shorter than heretofore to provide room for the spring 88 below them. At its upper end the spring 88 bears on a flange 88 formed on a sleeve 98 which is slidingly mounted on the rod 38 and abuts against the lower end of the sleeve 88, and the lower end of the spring 88 bears on a disk 92 which is mounted fast on the upper ends of two rods 94, the lower ends of these rods being fast in a block 98 which rests on a shoulder 91 on the lower end portion of the yoke 42. A lug 98 formed on this block lies in a recess in the yoke to prevent the block from turning. It will thus be seen that when the yoke is raised it acts through the block 88 and the rods 94 to raise the disk 92, and this disk acts through the spring 88 to raise the two

springs

54 and 58 through one or the other or both of which upward movement is imparted to the rod 38 and the toe rest in the manner hereinabove described. When the toe rest meets the resistance of the shoe the spring 88 is compressed more or less by continued upward movement of the yoke 42. the block 98 and the rods 84 without compression of ether of the heavier springs 54, 58. The shoe is accordingly supported by the force of the comparatively light spring 88, and it continues to be so supported until after the wipers 4 have substantially completed their movements to wipe the margin of the upper inwardly over the insole. This permits the shoe to yield in a downward direction in response to pressure of the wipers on the upper to avoid any possibility of damaging the upper by the inward movements of the wipers. It will be understood that in the event of any such downward movement of the shoe and the toe rest, the two

springs

54 and 58 are moved bodily downward with the toe rest against the resistance of the spring 88 without themselves increasing the resistance to such movement of the toe rest. Another advantage in the use of the comparatively light spring 86 is that the shoe is not clamped against the projections I of the plate 8 with such force as might damage the insole.

After the wipers have substantially completed their inward movements over the insole, their pressure on the margin of the upper is increased by a further upward movement of the yoke 42 accompanied by a short downward movement of the wiper carrier 6. In order that this pressure of the wipers on the upper may be adequate, the construction'provided by this invention is such that force is at this time transmitted from the yoke 42 to the sleeve 90 positively, instead of yieldingly through the, spring 86, so that the greater force of one or the other or both of the

springs

54, 56 is effective on the toe rest. For this purpose there is threaded on the lower end of the sleeve 90 a block I00 having on its opposite sides downwardly directed ratchet teeth I02 arranged to be engaged by a pair of pawls: I04 which are pivotally mounted at their lower ends on rods I06 supported in the opposite ends of a pair of plates I08 at the opposite sides of the block 96. These plates are pivotally mounted midway between their opposite ends and midway between the pawls on studs IIO formed on the block 96. A spring II2 connected to the two pawls I04 tends to swing them inwardly toward the ratchet teeth I 02. Initially, however, the pawls are held out of engagement with the ratchet teeth by a cam block II4 slidingly mounted on one of the rods 94 and having on its opposite sides cam faces II6 arranged to control the pawls by engagement with their upper ends. 'A spring I I8 mounted on the rod 94 below the cam block II4 holds the block initially upraised in such a position, determined by engagement of the block with the disk 92, that the pawls are held out of engagement with the ratchet teeth, thus permitting compression of the spring 86 by the upward movement of the yoke 42 as hereinbefore described. It will be understood that the relation of the cam block I Hi to the pawls I 04 remains unchanged during any compression of the spring 86 which may take place in pressing the toe rest against the shoe or in response to depression of the shoe and the toe rest as the wipers wipe the upper inwardly over the insole.

To cause the pawls I04 thereafter to engage the ratchet teeth I02 the cam block H4 is depressed against the resistance of the spring II8 by downward movement of a rod I 20 which extends through an opening in the block and carries a collar I22 arranged to engage the upper face of the block. This rod is pivotally connected at its upper end to an arm I 24 (Fig. 2) fast on a rock shaft I26 on which is secured another arm [I28 (Fig. 1) pivotally connected to a bar I30. This bar carries a roll I32 engaged by a cam I34 on the cam shaft I36 of the machine and is forked at its lower end to straddle the shaft between the" cam and a washer on the shaft to guide it for lengthwise movements. The cam I34 in the construction herein shown serves also to impart upper-pulling or "updraw movements heightwise of the last to the grippers independently of another cam which imparts upward and downward movements to the wiper carrier 6, as distinguished from the construction shown in the previously mentioned Letters Patent in which the same cam is used for thus operating both the grippers and the wiper carrier. Such movements are imparted to the grippers by movement of the rock shaft I26 in a counterclockwise direction (Fig. l)

whereby downward movement is imparted to a gripper-operating rod I38 corresponding to the rod 504 shown in the above mentioned Letters Patent. By reference to Fig. 3 it will be seen that initially there is a substantial space between the cam block H4 and the collar I22 to permit such upward movement of the block as occurs when the toe rest is applied to the shoe and such downward movement of the rod I20 as occurs when the grippers are operated to pull the upper without affecting the relation of the block II4 to the pawls I04. The cam I34 is so formed that later in the cycle of operations, substantially at the time when the wipers complete their inward movements over the insole. a further downward movement of the rod I20 is effected to depress the block I I4 and thus cause the pawls to engage the ratchet teeth, the grippers at this time having released themargin of the upper and being moved farther upwardly by this action of the cam. It will be evident that when the pawls are thus in engagement with the ratchet teeth any further upward movement of the yoke 42 or any depression of the shoe and the toe rest by the pressure of the wipers on the shoe results in compression of one or the other or both of the

springs

54, 56, depending upon the adjusted position of the disk 58. Accordingly the margin of the upper is subjected at this time to the amount of pressure required to press it firmly against the bottom face of the insole. Since the plates I 08 which support the pawls I04 are pivotally mounted on the studs-1H as above described, insurance is afforded that both pawls will firmly engage with equal forces the ratchet teeth I02 located immediately above them. To eliminate as far as possible lost motion between the blocks 96 and I00 when the increased pressure is to be applied to the margin of the upper, the ratchet teeth I02 on the opposite sides of the block I 00 are staggered, so that the lower ends of-the teeth on one side of the block are in horizontal planes midway between the lower ends of teeth on the other side of the block, and it will be understood that by reason ofthe pivotal mounting of the plates I08 engagement of one of the pawls I04 with the tooth next above it causes the other pawl quickly to engage the appropriate tooth on the other side of the block. The pawls are normally maintained with their upper ends at the same height by a washer I38 which is engaged by the lower end of the spring H8 and overlaps one of the plates I08, as shown in Fig. 3.

It is contemplated that the toe end of the upper of a shoe lasted in the machine herein shown will be secured in lasted relation to the insole by cement. Such cement may be thermoplastic cement previously applied to the margin of the toe end of the insole and needing to be softened before the margin of the upper is wiped inwardly over it, or may be rubber latex applied preferably both to the margin of the insole and to the margin of the upper, although for use with latex the machine will preferably be modifled in certain respects as hereinafter explained. For thus softening thermoplastic cement on the insole by heat, or for partially drying latex to render it more efiectively adhesive by the application of heat thereto, there is provided a heating device I40 (Figs. 9 and comprising a member I42 having an electrical heating unit I44 mounted therein to maintain it in a heated condition, this member being provided at its lower end with a plate I46 (Fig. 11) curved to engage the marginal portion of the insole around the toe end thereof. A stud I48 extends upwardly from the plate I48 into a socket in the member I42 and is fastened by a set screw I88 to hold the plate in place. Near its lower end the member I42 is connected to the holder I8 for the plate 8 by a pair of links I82 pivotally mounted at their opposite ends on the member and on the holder. Rigidly connected to the upper end portion of the member I42 by a pair of bars I84 is a junction box I88 for the connection of electrical lead wires I88 to other wires mounted in a cable I88 between the junction box and the heat unit I44. Pivotally mounted on a pin I82 in the rod I8 is a yoke member I84 having a pair of rearwardly extending arms I88 pivotally connected by a pin I88 to the junction box I88. These arms serve as links substantially parallel to the links I82, and the several links accordingly serve to guide the member I42 for upward and downward movements. A spring I18 connected to the pin I88 and to a pin I12 in the head of the machine tends to impart downward movement to the member I42 and when the parts are in the positions illustrated in Fig. 9 holds the plate I48 at the lower end of the member yieldingly in contact with cement on the insole. The member I42 is held initially upraised against the resistance of the spring I18 by a bar I14 having thereon a shoulder I18 (Fig. 12) arranged to engage a projection I11 on one of the arms or links I88. The bar I14 is pivotally connected at its rear end to an arm I18 fast on a cam-operated rock shaft I88. This rock shaft corresponds to the rock shaft 8I8 shown in the previously mentioned Letters Patent and, as therein described in detail, serves by its rocking movements to control the outward swinging or spreading movements of the grippers and their reverse inward swinging movements. Fig. 12 shows the parts in their initial positions,

' the shoulder I18 on the bar I14 acting on one of the arms I88 to hold the member I42 upraised in a position substantially as illustrated in Fig. 14. The first movement of the rock shaft I88, which occurs substantially at the beginning of the cycle of operations, is a movement in a clockwise direction (Fig. 12), as a result of which movement the member I42 is released to the action of the spring I18 and is moved downwardly by the spring to carry the plate I48 into contact with the cement on the insole, as illustrated in Fig. 9. In this operation, under the influence of a spring I82 connected to the bar I14 and to a pin I84 on the hub of the arm I18, the bar I14 is swung downwardly until it rests on a shoulder I88 formed on a third arm I88 of the yoke member I84. By reference to Fig. 9 it will be seen that when the parts are in the positions there shown the projection I11 which engages the shoulder I18 on the bar I14 is below the bar, so that any movement of the bar toward the left (Fig. 9) when the member I42 is in its lowest position has no effect on this member. This permits the rock shaft I88 to be turned in a counterclockwise direction to permit outward swinging or spreading movements of the grippers, as disclosed in the previously mentioned Letters Patent, without disturbing the member I42. At its lower end this member is provided with a beveled face I98 (Fig.9) which is continuous with a similarly beveled face I92 (Fig. 10) on the plate I48, and by pressure of the upper against these faces as the wipers wipe the upper inwardly over the insole the member I42 is lifted against the resistance of the spring m, as illustrated in Fig. 13. In this operation heat is applied to the margin of the upper to prepare it better for contact with the heated thermoplastic cement on the insole, or if latex is used, to render the latex on the upper more effectively adhesive. At the same time, and as the margin of the upper is spread by the plate I48 farther outwardly over the wipers than indicated in Fig. 13 in the continued operation of the machine, the plate serves additionally as a retarder" to cause the upper to be wiped more tightly and smoothly inward over the insole. As the wipers begin to wipe the upper inwardly, the rock shaft I88 receives a movement in a clockwise direction, as viewed in Fig. 9, to permit the grippers to swing inwardly toward the shoe, and in this operation the bar I14 is carried again to a position where its shoulder I18 is positioned farther rearwardly than the projection I11 which cooperates therewith. Accordingly, when the member I48 is lifted by the pressure of the upper against the plate I48 as above described, the projection I11 is moved upwardly into position to be engaged again by the shoulder I18 when the bar I14 is next moved forwardly. This movement of the bar occurs, in response to counterclockwise movement of the rock shaft I88, near the end of the inward wiping movements of the wipers, and accordingly the member I42 is lifted at this time to its initial position, as illustrated in Fig. 14.

In addition to the functions hereinabove described, the member I48 with its plate I48 serves initially as a holddown for the margin of the toe end of the insole, the plate being spaced inwardly from the extreme edge of the insole for enough to permit the wipers to begin to wipe the upper inwardly over the insole before the plate is lifted. It will be understood that with respect to this holddown function of the member I48 and its function as a retarder in controlling the margin of the upper, the member serves a useful purpose whether or not it is maintained in a heated condition and under appropriate conditions may be used, if desired, without being heated. In lasting with thermoplastic cement the member I42 will preferably be maintained in a more highly heated condition than in lasting with latex.

In order to allow sufllcient time for the heat to act on the cement if thermoplastic cement is used, mechanism is provided for bringing the machine automatically to a stop after the plate I48 has been moved into contact with the cement and for thereafter automatically starting it again after a predetermined short interval. The power-' driving means and the means whereby the machine is started and stopped respectively at the beginning and the end of the cycle are substantially as disclosed in the previously mentioned Letters Patent. The cam shaft I88 which carries the operating cams is driven through worm gearing I94 (Fig. 1) by a shaft I88, and keyed to this shaft is a sleeve I98 (Fig. 5) on which is rotatably mounted a clutch member 288 driven continuously through a belt 282 (Fig. l) by an electric motor 284. The clutch member 288 has a friction face 288 arranged to be engaged by a friction ring 288 fast on a cooperating clutch member 2 I8 which is mounted to slide lengthwise of the shaft I98 but is connected to the shaft to turn therewith by pins 2 I2 fast in the hub of the member 2 I8 and extending into holes formed in a member 2I4 fast on the shaft. A spring 2I8 bearing against the member 2 and the clutch member 2I8 tends to move the latter into posic tion to be driven by the member288. The member 2l8 is controlled by a yoke 218 mounted to turn with a shaft 228 (Fig. 6) and carrying shoes (not shown) which lie in a groove 222 in the hub of the member 2". Fast on the shaft 228 is an arm 224 on which is secured a latch 226 normally engaged underneath by a shoulder 228 formed on a block 238- to hold the yoke M8 in such a position that the clutch member '2l8 is disconnected from the member 288. 'The block 238 is carried by an arm 232 pivotally mounted at its upper end on one arm-of a bell-crank lever 234 pivoted on a rod 236 on the frame, the other arm of this bell-crank lever being provided with a roll 238 which lies in a cam track 248' formed in one side of a cam member 242 fast on the shaft I36. A spring 244 tends to swing the arm 232 rearwardly and holds it normally in a position determined by engagement of the block 238 with the latch 226. At its lower end the arm 232 extends through a slot 246 formed in a substantially horizontal bar 248 and caries a pin 258 arranged to be engaged by shoulders 252 on the bar. The bar 248 is plvotally connected at its front end (Fig. 1) to an upwardly extending arm 254 fast on a rock shaft 256, and a spring 258 connected to this arm tends to swing it in a rearward direction and thus to hold the rear end of the bar 248 against a screw 268 mounted in a bracket 26l on the frame. The rear end of the bar is supported on the upper end of a screw 262 in the bracket and is held down on this screw by a spring 264. Fast on the rock shaft 256 is a treadle 266. It will thus be seen that when this treadle is depressed the bar 248 is moved in a forward direction and acts on the pin 258 to swing the arm 232 in the direction to disengage the block 238 from the latch 226, thus permitting the spring 2|6 to force the clutch member 2I8 into position to be driven by the member 288. In order to bring the machine to a stop the arm 232 is lowered by the action of the cam track 248 on the bellcrank lever 234 to carry the shoulder 228 to a position lower than the latch 226 and to disengage the pin 258 from the shoulders 252 if the operator is still holding the treadle depressed. This permits the spring 244 to swing the arm rearwardly until the shoulder 228 is under the latch, after which the arm is lifted by the cam track 248 to disconnect the clutch members from each other and stop the machine. The machine is thus stopped with the plate I46 in contact with the cement on the insole by the action of the portion 268 of the cam track 248 on the bell-crank lever 234. As more particularly hereinafter explained, the cam track 248 isso formed. asto bring the machine to a stop once again in the cycle of operations before finally bringing it to a stop at the end of the cycle.

After the machine has been brought to a stop as above described with the plate I46 in contact with the cement, it is started again automatically, after a predetermined shortinterval, by fluidpressure means. For this purpose there is provided a piston 218 movable in a cylinder 212 which is part of a'casting 214 bolted. together with a plate 216, to the frame of the machine. An extension 218 of the piston projects outwardly through a bore in the cylinder212, and threaded in this extension is a rod 288 having a-square head 282 provided with a pin 283 which serves as a. pivotal support for the forked rear end of a bar 284. This bar extends forwardly at opposite sides of the arm 232 (Fig. 7) and rests on a pin 286 carried by the arm. A spring 288 mounted between a lug onthe head 282 and a lug on the bar 284 tends to swing the bar downwardly and thus to press it against the pin 288. The bar 284 has thereon sh lders 288 which, in response to forward movement of the piston218, engage the pin 288 and swing the arm 232 in the direction to release the latch 226 and thus start the machine. Such movement of the piston is effected against the resistance of a spring 282 which serves later to return the piston to its initial position determined by engagement of a boss 284 thereon with the plate 218. That portion of the cylinder 212 .in which the spring 282 is mounted is in communication with the atmosphere through a vent 286. For imparting operative movement to the piston 218 in the machine herein shown use is made of lubricating oil supplied by a rotary pump 298 (Fig. 1) with which the machine is provided, the pump being driven continuously by a belt 388 from the clutch member 288. The pump draws oil from an open reservoir 382 through a pipe 384 and delivers the oil through a pipe 386 to a cylindrical bore 388 (Fig. 8) in the casting 214. In this bore is mounted a rotary valve 3l8 having in one side thereof a recess 3i2 which normally establishes communication between the pipe 388 and another pipe 3 leading to the parts of the machine to be lubricated. A short turning movement of the valve 318 in a clockwise direction (Fig. 8), efiected by means hereinafter described, serves to interrupt communication between the pipe 3l4 and the pipe 386 and to establish communication between the latter and a port M6 in the casting 214, this port leading to a needle valve 3 l 8 threaded in the casting and controlling communication with a port 328 and a passage 322 which leads into the cylinder 212. The oil is thus permitted by the needle valve to enter the cylinder slowly to operate the piston 218. and the time which elapses before the piston is moved far enough to start the machine is determined by adjustment of the needle valve. For purposes of such adjustment an enlarged portion of the valve which is threaded in the casting 214 is connected by a coupling member 324 to a rod 326 which extends forwardly through the front of the frame of the machine and has on its frontend a hand wheel '328 for turning it. The coupling member 324 comprises a rod bent to provide portions at right angles to each other which are mounted respectively in a hole in the valve member and a hole in an enlarged head on the rod to serve as a universal joint, as illustrated in Fig. 8. Mounted on a portion of the pipe 386 is a relief valve 338 (Fig. 1) controlled by a spring 332'which permits the valve to open in response-to pressure of the oil against it, so that excess oil delivered by the pump returns through a port 333 to the reservoir 382 when the oil is diverted into the cylinder 212 as above described. It will be understood that at this time the oil in the cylinder is under suflicienhpressure-to operate the piston by reason of the resistance of the spring 332 to the opening of the valve 338.

For turning the valve 3l8 as above described, there is fast on a stem- 334 (Fig. '7) on one end of the valve a crank arm 336 connected by a link 338 (Fig. 5) to an arm 348 mounted to swing about the rod 236, this arm being provided with a roll 342 to engage the periphery of the cam member 242. A spring 344 connected to the link 338 tends to lift the link and holds the roll 342 initially in engagement with the cam member, as shown in Fig. 5. Formed on this member isa cam 346 which, as disclosed in the previously mentioned netters Patent, acts on a lever 341 to control the closing and opening of the grippers. This cam acts also on the roll 342 and swings the arm 348 downwardly to move the valve 3l8 into position to admit oil to the cylinder 212 shortly after the initial starting of the machine. The oil flows into the cylinder so slowly, under control of the adjustable needle valve3l8, that sufficient time is allowed for the machine to be brought to a stop by the cam 248 and to remain at rest the required interval before the piston 218 is moved far enough to start it again. After the machine has been started by the action of the piston 218, the cam 346 permits the valve 318 to be returned to its initial position by the spring 344. With the valve in this position the oil in the cylinder 212 is returned to the reservoir 382, as the piston is re turned by the spring 292, through a passage 348 in the valve, this passage communicating through a port 358 in the side of the valve with a passage 352 in the casting 214 which communicates with the passage 322 leading to the cylinder. In view of the shape of the cam member 242, which might permit further turning of the valve 3l8 by the spring 344 later in the cycle, the normal position i 'of the valve is determined by a pin 353 (Fig. 5)

which is mounted in the casting 214 and extends into a peripheral slot in the valve.

In case it is not desired to provide the insoles and lasts with holes to receive the pins I2, workpositioning means such as shown in Figs. 16 to 19, inclusive, may be utilized. In this construction the holder I6 is provided with a plate 354 detachably secured to the holder by means of the same character as the means for securing the plate 8 in the construction shown in Fig. 9, the holder having also a pin 355 arranged to extend into a hole in the plate 354 to assist in properly locating the plate. The plate 354 has a downwardly extending rim 356 (Fig. 18) for engaging'the insole around the end and along the sides of the toe to determine the position of the shoe heightwise and with respect to tipping movements. For determining the position of the shoe lengthwise when the operator presents it to the machine there is provided a toe-end gage 358 arranged to serve as an abutment opposite the toe-end face of the last and, as herein illustrated, to engage the last itself. The gage358 is provided with fingers 368 (Fig. 17) in angular relation to each other which have the further function of centralizing the extreme end of the last and shoe laterally. A portion of the gage, as shown in Fig. 17, is substantially U-shaped and has threaded in its two arms studs 362 which are mounted to turn in bearings formed in opposite side portions of a carrier 364 pivotally mounted at its rear end on a rod 366 supported in lugs on a bracket 368, this bracket being secured to a portion 310 of the frame of the machine. Extending upwardly from one side portion of thegage member 358 is an arm 312 pivotally connected at its upper end to the front end of a link 314, the rear end of this link being pivotally connected to a lug on the bracket 368. The carrier 364 serves also as a link substantially parallel to the link 314, and accordingly the gage member 358 is mounted on a parallel link support for swinging movements heightwise of the shoe. The initial position of the gage member heightwise of the shoe is determined by a screw 316 which is threaded in the bracket 368 and the head of which is arranged to be engaged by a lug 318 on the link 314. The

, talities themselves.

gage is lifted to make way for the wipers 4 by engagement of a cover plate 388 on the wiper carrier 6 with a lug 382 on the gage carrier 364 as the wiper carrier is swung upwardly after the shoe has been clamped against the plate 354 by the toe rest 38. Between the bracket 368 and the frame member 318 are spacing washers 384, and

the wiper carrier to prevent the access of foreign matter to the interior of the machine at the rear of the plate 386.

To cooperate with the toe-end gage 358 there are further provided side gages 388 comprising fingers which extend downwardly toward the opposite side edges of the shoe bottom at the ball portion of the shoe, which portion will ordinarily have been lasted before the shoewcomes to the machine, to indicate visually the proper position of this portion of the shoe laterally. These side gages have horizontally extending portions 398 mounted in slideways in a bracket 392 which is fitted over the front end of the holder 16 as illustrated in Fig. 19 and a portion of which is clamped against the holder by a thimble 394 (Fig. 16) threaded in the holder. The horizontally extending portions 398 are provided with rack teeth engaging the opposite sides of a pinion 396 fast on a shaft 398 rotatable in the bracket 392, this shaft having a hand wheel 488 on its upper end for turning it. Between the hand wheel and the bracket is a spring washer 482 which acts frictionally to hold the side gages 388 in adjusted positions. The gages are adjusted so that their lower ends are the same distance apart as the opposite side edges of the ball portion of the shoe bottom. It will be understood that the operator presents the work to the machine with the toeend face of the last in engagement with the fingers 360 of the toe-end gage 358 and further positions the shoe laterally by sight as determined by the side gages 388 before starting the machine. With the shoe in the position thus determined it is in proper relation to the wipers for the latter to wipe the upper effectively heightwise of the last and inwardly over the insole.

To assist in preventing lengthwise movement of the shoe in a heelward direction in the lasting operation the machine is provided with a heel rest 404 (Fig. l) which is moved rearwardly into ongagement with the heel end of the shoe shortly after the starting of the power operation of the' machine. The construction of this heel rest and the manner in which it is operated and controlled are substantially as disclosed in detail in the previously mentioned Letters Patent.

The manner of operation of the machine will now be briefly recapitulated with reference to the chart (Fig. 20). It will be understood that the lines of this chart represent the configurations of the cams which either effect or permit the movements of the instrumentalities which operate on the shoe and do not in every instance correspond precisely to the movements of those instrumen- The operator first presents to the machine a shoe the toe end of which is to be lasted and which, it will be assumed, has a coating of suitable thermoplastic cement in a hardened condition along the marginal portion of the toe end of the insole. Preferably the toe box and the lining will have been trimmed so that the margin of these two layers of the upper materials will overlap'only the extreme edge of the insole when the toe end of the shoe is in lasted condithe operator merely mounts the work on the pins contact with the fingers 360 of the toe-end gagetion. It the machine is provided with work-positioning means of the character shown in Fig. 9,

I2 with theinsole in engagement with the plate 8, inserting the margin of the upper between the open jaws of the grippers- If, on the other hand," the machine is provided with work-positioning r'neansof. the character showrrin Figs. 16 to 19, inclusive, he presents the toe end of the fast in side gages 388. After having presented the work the operator starts the machine by depressing the treadle 266. Immediately thereafter the toe rest 30 is moved upwardly to clamp the shoe against the insole-engaging plate and to support it yieldingly under the influence of the comparatively I light spring 86, and .near the end of this movement of the toe rest the grippers are closed on the margin of the upper and the heel rest is applied to the shoe. At the beginning of the operation of the machine also, before the grippers close on the upper, the gripper-spreadng cam causes the grippers to swing a short dist nce inwardly toward the shoe to present the toe gripper 2 in better position to grip the upper, and by this action of the .cam the heating member I42 is released to the action of the spring I10 which moves it downwardly and thus carries the heated plate I46 into contact with the cement on the insole. The machine is brought automatically to p a stop by the cam 240 with this plate in contact with the cementjat which time the grippers have begun to pull the upper heightwise of the last. Before the machine thus comes to a stop the valve 3I0 is turned to admit oil to the cylinder 212 past the needle valve 3I8 which will have been previously adjusted in accordance with the time which it is desired that the plate I46 shall remain in contact with the cement. f'

As'soon as the piston 210 has been moved by the oil admitted to the cylinder 212 the distance necessary to release the clutch member 2ND, the machine is again started in operation, and immediately thereafter the valve 3I0 is'turned reverselyto-permit exhaustof the oil from the cylinder, so that the piston 210 is returned to starting position. Early in this part of the cycle of operations of the machine. the grippers receivetheir outward swinging or upper-spreading movements and also further updrawmovements to pull the upper heightwise of the last, their updraw movements continuing after their spreading movements have ceased. Early in this part of the cycle also the wipers are'advanced and closed about the toe below theedgeof the insole, and in proper time relation to these movements they are swung upwardly to Wipe the upper heightwise of the last. The updraw cam I34 is so formed as to impart to the grippers, through positive connections of the character more fully disclosed in the previously mentioned Letters Patent, comparatively rapid initial updraw movements, so that the upper is subjected to substantial tension prior to the upwiping action of the wipers, followed by slower updrawmovements in the course of-the upwiping operation, these movements of the grippers being completed shortly before. .the completion of the upwiping movements of the wipers. After the upwiping operation the wipers are further advanced and closed, to wipe themarginal portion .0! the upper inwardly over ,the insole, the grippers being moved slightly/ downward to relax the fprce of their pull on the upper before the wipers. thus wipe it inwardly. ,In 'this over-.,

wiping operation the shoe may move, downward slightly against theresi stance of thesprlng 86 Early in this operation 'ofthe wipers the grippers; are permittedto swing inwardly toward the shoe in response 'to the pulhof the margin ofthe ,upper thereon and are then openedto release the upper the time of such opening of'the grippers being adjustably variable by means (not shown) provided for that purpose, as indicated by the chart. Just after the wipers begin to wipe the margin of the upper inwardly over'the insole the heating member I42 and its plate I46, which havebeen acting as a holddown for the margin of the insole, are lifted by thepressure 0f the upper against them, as illustrated in Fig.

I the upper, and at substantially the same time the yoke member 42 is raised to force the toe rest 36 more firmly against the shoe. In this operation in response to the pressure of the wipers thereon.

the force of one or the other or both of the heavier springs 54, 56, as determined by adjustment of the disk 58, is rendered effective on the toe rest, the pawls I04 being permitted to engage the ratchet teeth I02 by the updraw cam in its action to move the grippers to higher positions after their releaseof the upper. The machine is brought again to' a stop by the cam 240 while the wipers are holding the overwiped margin of the upper under pressure. After the upper has thus been held under pressure a few seconds to permit the cement to harden, the operator again starts the machine by depression of the treadle 266, whereupon the various parts are returned to their starting positions, the pressure of the wipers on. the upper being relaxed before they are retracted from over the shoe. The cam 240 thereafter brings the machine to a stopv at the end of'the cycle.

In lasting shoes with latex it is ordinarily not necessary or advantageous to bring the machine I to a stop with the-heated plate I46 in operative position, and accordingly a cam 240 so formed Novel features of the means herein disclosed for starting the machine by fluid pressure are 288,363, filed on August 4, 1939.

claimed in another application of mine Serial No.

Having described the invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. Inalastingmachine, means fol-laying the marginofanupper inwardlyoveraninsoleon alasttocauseittobesecuredtotheinsoleby cement previously applied to the insole, and a device for applying heat to the cement on the insole before the margin of the upper is thus laid inwardly over it, said device being arranged to occupy a position opposite the bottom of the insole when the work is initially presented to the machine 2. In a lasting machine, means for laying the margin of an upper inwardly over an insole on alasttocauseittobesecuredtotheinsoleby cement previously applied to the insole, a device for applying heat to the cement on the insole before the marginoitheupperisthuslaidinwardly over it, said device being arranged to occupy a position opposite the bottom of the insole but retracted from insole-engaging position when the work is initially presented to the machine and being movable heightwise of the last into contact with the cement after the work has thus been presented.

3. In a lasting machine, means for laying the margin of an upper around the toe end of a last inwardly over an insole on the last to cause it to be secured to the insole by cement previously applied to the insole, a device for applying heat to the cement on the insole before the margin of the upper is thus laid inwardly over it, said device being arranged to occupy a position opposite the bottom of the toe end of the insole when the work is initially presented to the machine,

and parallel links spaced apart heightwise of the 7 last and located opposite the bottom of the forepart of the insole when the work is thus presented to guide said device for movements heightwise of the last into and out of position to heat the cement on the insole.

4. In a lasting machine, means for laying the margin of an upper around the toe end of a last inwardly over an insole on the last to cause it to be secured to the insole by cement previously applied to the insole, means located opposite the bottom of the forepart of the insole for positioning the work relatively to said overlaying means, and a device for applying heat to the cement on the insole before the margin of the upper is laid inwardly over it, said device being supported by said work-positioning means for movements heightwise of the last into and out of position to heat the cement.

5. In a lasting machine, means for laying the margin of an upper around the toe end of a last inwardly over an insole on the last to cause it to be secured to the insole by cement previously applied to the insole, means located opposite the bottom of the forepart of the insole for positioning the work relatively to said overlaying means, a device for applying heat to the cement on the insole before the margin of the upper is laid inwardly over it, and parallel links supported on said work-positioning means to guide said device ior movements heightwise of the last into and out of position to contact with the cement on the insole.

6. In a lasting machine, means for laying the margin of an upper inwardly over an insole on a last to cause it to be secured to the insole by cement previously applied to the insole, a device for applying heat to the cement on the insole before the margin of the upper is thus laid inwardly over it, spring means tending to move said device heightwise of the last toward the insole, and mechanism for rendering said spring means effective thus to move the device toward the insole after the work has been presented to the machine.

7. In a lasting machine, means for 8 8 the margin of an upper inwardly over an insole on a last to cause it to be secured to the insole by cement previously applied to the insole, a device for applying heat to the cement on the insole before the margin of the upper is thus laid inwardly over it, said device being arranged to occupy a position opposite the bottom of the insole when the work is initially presented to the machine, spring means for moving said device heightwise of l the last into contact with the cement on the insole, and mechanism for holding the device initially retracted against the resistance of said spring means and for releasing it to permit it to be moved into contact'with the cement after the work has been presented to the machine.

8. In a lasting machine, means for laying the margin of an upper around the toe end of a last inwardly over an insole on the last to cause it to be secured to the insole by cement previously applied to the insole, a device for applying heat to the cement on the insole before the margin of the upper is thus laid inwardly over it, paralle} links arranged to guide said device for movements heightwise ofthe last toward and from the insole, a spring for moving the device toward the insole, and a member arranged to act through one of said links to hold the device initially retracted against the resistance of said spring and movable to release the device to the action of the spring.

9. In a lasting machine, means for laying the margin of an upper inwardly over an insole on a last to cause it to be secured to the insole by cement previously applied to the insole, and a device for applying heat to the cement on the insole before the margin of the upper is thus laid inwardly over it, said device being movable heightwise of the last away from the insole in response to pressure of the upper against it as the upper is laid inwardly over the insole.

10. In a lasting machine, wipers for wiping the margin of an upper around the toe end of a last inwardly over an insole on the last to cause it to be secured to the insole by cement previously applied to the insole, and a device for applying heat to the cement on the insole before the margin of the upper is thus wiped inwardly over it, said device being beveled opposite the edges of the wipers to cause it to be forced away from the insole by pressure of the upper against it while applying heat to the upper as the upper is wiped inwardly by the wipers.

11. In a lasting machine, wipers for wiping the margin of an upper around the toe end of a last inwardly over an insole on the last to cause it to be secured to the insole by cement previously applied to the insole, a device for applying heat to the cement on the insole before the margin of the upper is thus wiped inwardly over it, said device being movable heightwise of the last away from the insole in response to pressure of the upper against it as the upper is wiped inwardly by the wipers, and spring means arranged to hold said device in contact with the cement and against the resistance of which the device is thus movable away from the insole.

12. In a lasting machine, wipers for wiping the margin of an upper around the toe end of a last inwardly over an insole on the last to cause it to be secured to the insole by cement previously applied to the insole, and a device for applying heat to the cement on the insole before the margin of the upper is thus wiped inwardly over it, said device being arranged to occupy [a position opposite the bottom of the toe end of the insole when the work is initially presented to the machine and being movable heightwise of the last awayfrom the insole while applying heat also to the margin of the upper as the upper is wiped inwardly by the wipers.

13'. In a lasting machine, wipers for wiping the margin of an upper around the toe end of a last inwardly over an insole on the last to cause it to be secured to the insole by cement previously applied to the insole, a device for applying heat to the cement on the insole before the margin of the upper is thus wiped inwardly over it, said device being arranged to occupy a position opposite the bottom of the toe end of the insole when the work is initially presented to the machine, and means for moving the device heightwise of the last toward the insole after the work has thus been presented, the device being beveled opposite the edges of the wipers to cause it to be forced away from the insole by pressure of the upper against it while applying heat to the upper as the upper is wiped inwardly by the wipers.

14. In a lasting machine, means for laying the margin of an upper inwardly over an insole on a last to cause it to be secured to the insole by cement previously applied both to the insole and to the margin of the upper, and a device for applying heat to the cement on the insole before the margin of the upper is laid inwardly over the insole, said device being displaceable heightwise of the last by the action of the overlaying means thereon while applying heat also to the cement on the margin of the upper.

15. In a lasting machine, wipers for wiping the margin of an upper around the toe end of a last inwardly over an insole on the last into position to be secured to the insole by cement, a device for pressing the toe end of the insole against the bottom of the last and for thereafter clamping the upper against the wipers as the upper is wiped inwardly by the wipers, said device being movable out of contact with the insole in response to pressure of the upper against it, and means for maintaining said device in a heated condition.

16. In a lasting machine, wipers for wiping the margin of an upper around the toe end of a last inwardly over an insole on the last into position to be secured to the insole by cement, a device for pressing the toe end of the insole against the bottom of the last and for thereafter clamping the upper against the wipers as the upper is wiped inwardly by the wipers, said device being mounted for movement heightwise of the last and being beveled opposite the edges of the wipers to cause it to be forced away from the insole by pressure of the upper against it, and

means for maintaining said device in a heated condition.

17. ,In a lasting machine, wipers for wiping the margin of an upper around the toe end of a last inwardly over an insole on the last, means located opposite the bottom of the forepart of the insole for positioning the work relatively to the wipers, a device for pressing the toe end of the insole against the bottom of the last and for thereafter clamping the upper against the wipers to serve as a retarder as the upper is wiped inwardly by the wipers, and parallel links extending from said device lengthwise of the last in a heelward direction and mounted on said workpositioning means for swinging movements heightwise of the last to control the device, said device being movable heightwise of the last out of contact with the insole in response to pressure of the upper against it.

18. In a lasting machine, wipers for wiping the margin of an upper around the toe'end of a last inwardly over an insole on the last, a device for pressing the toe end of the insole against the bottom of the last and for thereafter clamping the upper against the wipers to serve as a retarder as the upper is wiped inwardly by the wipers, a spring for moving said device heightwise of the last into contact with the insole and against the resistance of which the device is reversely movable away from the insole in response to pressure of the upper against it, and means for holding said device initially retracted against the resistance of said spring and for releasing it to the action of the spring after the work has been presented to the machine.

19. In a lasting machine, wipers for wiping the margin of an upper around the toe end of a last inwardly over an insole on the last, a device for pressing the toe end of the insole against the bottom of the last and for thereafter clamping the upper against the wipers to serve as a retarder as the upper is wiped inwardly by the wipers, a spring for moving said device heightwise of the last into insole-engaging position, parallel links spaced apart heightwise of the last and connected to said device for controlling it, and a member arranged to act through one of said links to hold the device retracted against the resistance of said spring and movable to release the device to the action of the spring.

20. In a power-operated lasting machine, means for laying the margin of an upper inwardly over an insole to cause it to be secured to the insole by cement previously applied to the shoe, a device for applying heat to the cement on the shoe before the margin of the upper is thus laid inwardly over the insole, means for rendering said device eifective to heat the cement after the starting of the power operation of the machine, and means for adjustably varying the time said device remains thus eiiective to heat the cement.

21. In a power-operated lasting machine, means for laying the margin of an upper inwardly over an insole to cause it to be secured to the insole by cement previously applied to the shoe, a device for applying heat to the cement on the shoe before the margin of the upper is thus laid inwardly over the insole, said device being movable into position to heat the cement after the starting of the power operation of the machine and being thereafter movable away from that position in the course of the automatic operation of the machine, and means for adjustably varying the time said device remains in position to heat the cement.

22. In a power-operated lasting machine, means for laying the margin of an upper inwardly over an insole to cause it to be secured to the insole by thermoplastic cement previously applied to the insole, a device for applying heat to the cement on the insole before the margin of the upper is thus laid inwardly over it, said device being movable into contact with the cement on the insole after the starting of the power operation of the machine and being thereafter reversely movable away from the insole in response to pressure of the upper against it as the upper is laid inwardly over the insole, and means for adJustably varying the time the device remains in contact with the cement.

23. In a power-operated lasting machine, means for laying the margin of anupper inwardly over an insole to cause it to be secured to the insole by cement previously applied to the shoe, a device for applying heat to the cement on the shoe before the margin of the upper is thus laid inwardly over the insole, means for rendering said device effective to heat the cement after the starting of the power operation of the machine, and automatic means for bringing the machine to a stop while the cement is thus being heated and for thereafter again starting it in operation.

24. In a power-operated lasting machine, means for laying the margin of an upper inwardly over an insole to cause it to be secured to the insole by cement previously applied to the insole, a device for applying heat to the cement on the insole before the margin of the upper is thus laid inwardly over it, said device being movable into contact with the cement on the insole after the starting of the power operation of the machine, automatic means for bringing the machine to a stop with the device in contact with the cement, and additional means for automatically starting the machine again in operation after a predetermined interval.

25. In a power-operated lasting machine, means for laying the margin of an upper inwardly over an insole to cause it to be secured to the insole by cement previously applied to the shoe, a device for applying heat to the ce ment before the margin of the upper is thus laid inwardly over the insole, means for rendering said device effective to heat the cement after the starting of the power operation of the machine, automatic means for bringing the machine to a stop while the cement is thus being heated ,and for thereafter again starting it in operation, and means for adiustably varying the time the machine thus remains at rest before it is again started.

26. In a power-operated lasting machine, means for laying the margin of an upper inwardly over an insole to cause it to be secured to the insole by thermoplastic cement previously applied to the shoe, a device for applying heat to the cement to activate it before the margin of the upper is thus laid inwardly over the insole, means for moving said device intoposition to activate the cement after the starting of the power operation of the machine, and automatic means for bringing the machine to a stop to allow time for such activation of the cement and for again starting it in operation after a predetermined interval.

27. In a power-operated lasting machine, means for laying the margin of an upper inwardly over an insole to cause it to be secured to the insole by cement previously applied to the shoe, a device for applying heat to the cement before the margin of the upper is thus laid inwardly over the insole, means for rendering said device efiectiv'e to heat the cement after the starting of the power operation of the machine, automatic means for bringing the machine to a stop to allow time for the heating of the cement, ad-

ditional means for automatically starting the,

machine again in operation after a predetermined interval, and mechanism for initiating the action of said additional means before the machine is thus brought to a stop.

28. In a power-operated lasting machine, means for laying the margin of an upper inwardly over an insole to cause it to be secured to the insole by thermoplastic cement previously applied to the shoe, a device for applying heat to the cement to activate it before the margin of the upper is thus laid inwardly over the insole, said device being movable into position to activate the cement after the starting of the power operation of the machine, automatic means for bringing the machine to a stop while the cement is thus being activated, and additional means for automatically starting the machine again in operation after a predetermined interval, said additional means being adjustable to vary the time the machine thus remains at rest.

29. In a lasting machine, the combination with means for laying the margin of an upper inwardly over an insole on a last, of a shoe-positioning device located opposite the bottom of the shoe, a shoe rest movable to clamp the shoe against said device, a spring through which such movement .is imparted to the shoe rest, said spring being yieldable to permit reverse movement of the shoe rest in response to pressure of said overlaying means on the upper heightwise of the shoe in laying the upper inwardly over the insole, another stronger spring also arranged to control said shoe rest, and means for subjecting the shoe rest to the greater force of said other spring to press it more firmly against the shoe only after opportunity has been afforded for yield of said first-named spring in the overlaying operation.

30. In a lasting machine, the combination-with means for laying the margin of an upper inwardly over an insole on a last, of a shoe-positioning device located opposite the bottom of the shoe, 9. shoe rest movable to clamp the shoe against said device, a member for thus moving the shoe rest, a spring for transmitting force from said member to the shoe rest, said spring being yieldable to permit reverse movement of the shoe rest in response to pressure of said overlaying means on the upper heightwise of the shoe in laying the upper inwardly over the insole, another stronger spring also arranged to transmit force from said member to the shoe rest, and mechanism for sub- Jecting the shoe rest to the greater force of said other spring to increase its pressure against the shoe by further movement said member only after opportunity has been aiIorded for yield of said first-named spring in the overlaying operation.

31. In a lasting machine, the combination with means for laying the margin of an upper inwardly over an insole on a last, of a shoe-positioning device located opposite the bottom of the shoe, a shoe rest movable to clamp the shoe against said device, a member for thus moving the shoe rest, a spring for transmitting force from said member to the shoe rest, said spring being yieldable to permit reverse movement of the shoe rest in response to pressure of said overlaying means on the upper heightwise of the shoe in laying the upper inwardly over the insole, another stronger spring also arranged to transmit force from said member to the shoe rest, and pawl-and-ratchet mechanism arranged to be rendered operative only after opportunity has been afl'orded for yield of said first-named spring in the overlaying operation to transmit force positivelyfrom said member to said other spring and thus to increase the pressure of the shoe rest against the shoe.

32. In a lasting machine, the combination with means for laying the margin of an upper inwardly movement of the shoe rest in response to pressure of said overlaying means on the upper heightwise of the shoe in laying the upper inwardly over the insole, and means for subjecting the shoe rest to the greater force of said other spring to increase its pressure against the shoe only after opportunity has been afforded for yield of said first-named spring in the overlaying operation.

33. In a lasting machine, the combination with means for laying the margin of an upper inwardly over an insole on a last, of a shoe-positioning device located opposite the bottom of the shoe,-

a shoe rest movable to clamp the shoe against said device, a member for thus moving the shoe rest, a spring for transmitting force from said member to the shoe rest, another stronger spring movable bodily by the force of said first-named spring thus to operate the shoe rest, said firstnamed spring being yieldable to permit reverse movement of the shoe rest in response to pressure of said overlaying means on the upper heightwise of the shoe in laying the upper inwardly overthe insole, and means for transmitting force positively from said member to said other spring to increase the pressure of the shoe rest against the shoe only after opportunity has been afforded for yield of said first-named spring in the overlaying operation.

34. In a lasting machine, the combination with means for laying the margin of an upper inwardly over an insole on a last, of a shoe-positioning device located opposite the bottom of the shoe, a shoe rest movable to clamp the shoe against said device, a member for thus moving the shoe rest, a spring for transmitting force from said member to the shoe rest, another stronger spring movable bodily by the force of said first-named spring thus to operate the shoe rest, said firstnamed spring being yieldable to permit reverse movement of the shoe rest in response to pressure of said overlaying means on the upper heightwise of the shoe in laying the upper inwardly over the insole, mechanism for transmitting force positively from said member to said other spring to increase the pressure of the shoe rest against the shoe, and means for rendering said mechanism inoperative until after opportunity has been afiorded for yield of said first-named spring in the overlaying operation.

35. In a lasting machine, the combination with means for laying the margin of an upper inwardly over an insole on a last, of a shoe-positioning device located opposite thebottom of the shoe, a shoe rest movable to clamp the shoe against said device, a member for thus moving the shoe rest, a spring for transmitting force from said member to the shoe rest, another stronger spring movable bodily by the force of said first-named spring thus to operate the shoe rest, said firstnamed spring being yieldable to permit reverse movement of the shoe rest in response to pressure of said overlaying means on the upper heightwise of the shoe in laying the upper inwardly over the insole, a device for transmitting force from said member to said other spring independently of said first-named spring to increase the pressure of the shoe rest against the shoe, said device comprising a member having teeth thereon and a. pawl for engaging said teeth, and means for holding said pawl out of engagement with the teeth until after opportunity has been, afiorded for yield of said first-named spring in the overlaying operation.

36. In a lasting machine, the combination with means for laying the margin of an upper inwardly overan insole on a last, of a shoe-positioning device located opposite the bottom of the shoe, a 10 shoe rest movable to clamp the shoe against said device, a spring through which such movement is imparted to the shoe rest, said spring being yieldable to permit reverse-movement of the shoe rest in response to pressure of said overlaying means on the upper heightwise of the shoe in laying the upper inwardly over the insole. a pair of other stronger springs also arranged to control said shoe rest, and means for subjecting the shoe rest to the greater force of one or the other of said stronger springs selectively to increase the pressure of the shoe rest against the shoe only after opportunity has been afforded for yield of said first-named spring in the overlaying operation.

37. In a lasting machine, the combination with means for laying the margin of. an upper inwardly over an insole on a last, of a shoe-positioning device located opposite the bottom of the shoe, a shoe rest movable to clamp the shoe against said device, a member for thus moving the shoe rest, a spring for transmitting force from said member to the shoe rest, said spring being yieldable to permit reverse movement of the shoe rest in response to pressure of said overlaying means on the upper heightwise of the shoe in laying the upper inwardly over the insole, a pair of other stronger springs for also transmitting force from said member to the shoe rest, means adjustable to render one or the other of said stronger springs selectively effective on the shoe rest, and mechanism arranged to be rendered operative only after opportunity has been aflorded for yield of said first-named spring in the overlaying operation to transmit force positively from said member to one or the other of said stronger springs and thus to increase the pressure of the shoe rest against the shoe.

38. In a lasting machine, the combination with means for laying the margin of an upper inwardly over an insole on a last, of a shoe-posi- 50 tioning device located opposite the bottom of the shoe, a shoe rest movable to clamp the shoe against said device, a spring through which such movement is imparted to the shoe rest,[ said spring being yieldable to permit reverse movement of the shoe rest in response to pressure of said overlaying means on thefupper heightwise of'the shoe in laying the upper inwardly over the insole, a pair of other springs also arranged to control said shoe rest, and means forsubjecting the shoe rest to the force of said other springs independently of said first-namedspring to increase the pressure of the shoe rest against the shoe only after opportunity has been afforded for yield of said first-named spring in the overlaying operation.

39. In a'lasting machine, the combination with means for laying the margin of an upper inwardly over an insole on a last, of a shoe rest' for supporting the shoe against the pressure of said overlaying means on the upper heightwise of the Y on the upper in laying the upper inwardly over the insole, another stronger spring also arranged mechanism for subjecting the shoe rest to the greater force of said other spring to increase its pressure against the shoe only after opportunity has been aflorded for yield of said first-named spring in the overlaying operation.

40. In a lasting machine, the combination with means ior laying the margin oi an upper inwardly over an insole on a last. a shoe rest for supporting the shoe against the pressure of said overlaying means on the upper heightwise of the shoe, a spring controlling said shoe rest and yieldable to permit movement of the shoe rest in response to such pressure 0! the overlaying means on the upper in laying the upper inwardly over the insole, another stronger spring arranged to transmit the force of said first-named spring to the shoe rest, and mechanism for subjecting the shoe rest to the greater force of said other spring to increase its pressure against the shoe only after opportunity has been aflorded for yield of said first-named spring in the overlaying operation.

41. In a lasting machine, the combination with means for laying the margin of an upper inwardly over an insole on a last, of a shoe rest for supporting the shoe against the pressure of said overlaying means on the upper heightwise oi the shoe. a spring controlling said shoe rest and yieldable to permit movement of the shoe rest in response to such pressure of the overlaying means on the upper in laying the upper inwardly over the insole, another stronger spring also arranged to control said shoe rest but movable bodily without increasing the resistance to the movement of the shoe rest when the shoe rest moves against the resistance oi said first-named spring, and mechanism for subjecting the shoe rest to the greater force of said other spring to increase its pressure against the shoe only after opportunity has been ailorded for yield of said first-named spring in the overlaying operation.

42. In a lasting machine, the combination with means for laying the margin of an upper inwardly over an insole on a. last, of a shoe rest for supporting the shoe against the pressure of said overlaying means on theupper heightwise oi the shoe, a spring controlling said shoe rest and yieldable to permit movement of the shoe rest in response to such pressure of the overlaying means on the upper in laying the upper inwardly over the insole, another stronger spring also arranged to control said shoe rest but movable bodily without increasing the resistance to the movement of the shoe rest when the shoe rest moves against the resistance of said first-named spring, and a device arranged to act positively on said other spring to increase the pressure of the shoe rest against the shoe only after opportunity has been ailorded i or yield of said first-named spring in the overlaying operation.

43. In a lasting machine, the combination with means for laying the margin of an upper inwardly over an insole on a last, of a. shoe rest for supporting the shoe against the pressure of said overlaying means on the upper heightwise of the shoe, a spring controlling said shoe rest and yieldable to permit movement of the shoe rest in response to such pressure of the overlaying means on the upper in laying the upper inwardly over the insole, a pair of other stronger springs also arranged to control said shoe rest, and means for subjecting the shoe rest to the greater force of one or the other oil said stronger springs selectively to increase the pressure of the shoe rest against the shoe only after op portunity has been afforded for yield of said firstnamed spring in the overlaying operation.

44. In a lasting machine, the combination with means for laying the margin of an upper inwardly over an insole on a last, of a shoe rest for supporting the shoe against the pressure oi said overlaying means on the upper heightwise of the shoe, a spring controlling said shoe rest and yieldable to permit movement of the shoe rest in 7 response to such pressure of the overlaying means on the upper in laying the upper inwardly over the insole, a pair oi other stronger springs movable bodily with the shoe rest when the shoe rest moves against the resistance of said firstnamed spring, and means for subjecting the shoe rest to the greater force oi one or the other of said stronger springs selectively to increase the pressure of the shoe rest against the shoe only aiter opportunity has been aiIorded for yield of said first-named spring in the overlaying operation.

45. In a lasting machine, the combination with means for laying the margin of an upper inwardly over an insole on a last, of a shoe rest for supporting the shoe against the pressure of said overlaying means on the upper helghtwise of the shoe, a spring controlling said shoe rest and yieldable to permit movement of the shoe rest in response to such pressure of the overlaying means on the upper in laying the upper inwardly over the insole, a pair of other springs movable bodily with the shoe rest when the shoe rest moves against the resistance of said firstnamed spring, and means for subjecting the shoe rest to the force of said other springs independently of said first-named spring to increase the pressure 0! the shoe rest against the shoe only after opportunity has been afforded for yield oi said first-named spring in the overlaying operation.

46. In a lasting machine, the combination with means for laying the margin of an upper inwardly over an insole on a last, 01' a shoe rest for supporting the shoe against the pressure of said overlaying means on the upper heightwise of the shoe, a device for supporting the shoe rest against pressure of the shoe thereon, said device having teeth on the opposite sides thereof, a pair of pawls arranged respectively to engage the teeth on the opposite sides of said device to control the device, and a. support common to both pawls mounted for swinging movement to permit the pawls substantially to equalize their pressures on the teeth which they engage.

47. In a lasting machine, the combination with means for laying the margin of an upper inwardly over an insole on a last, of a shoe rest for supporting the shoe against the pressure of said overlaying means on the upper heightwise oi the shoe, a device for supporting the shoe rest against pressure of the shoe thereon, said device having rows of teeth on the opposite sides thereof with the teeth on one side in staggered relation to the teeth on the other side, a pair of pawls arranged respectively to engage the teeth on the opposite sides of the device to control the device, said device and the pawls being relatively movable bodily lengthwise oi. the rows of teeth before the pawls engage the teeth, and a support common to both pawls and moimted for swinging movement to permit the pawls relatively to adjust themselves lengthwise oi the rows of teeth when they engage the teeth.

48. In a power-operated lasting machine, wipers for embracing an upper around the toe end