US2387331A

US2387331A - Lasting machine

Info

Publication number: US2387331A
Application number: US516253A
Authority: US
Inventors: Jorgensen Bernhardt
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1943-12-30
Filing date: 1943-12-30
Publication date: 1945-10-23
Anticipated expiration: 1962-10-23

Description

Oct. 23, 1945.

B. JORGEZNSEN 2,387,331

LASTING MACHINE Filed Dec. 30, 1943 5 Sheets-Sheet 1 In van for Bern/2a rdt JZv rgensen B hi Attorney Oct. 23, 1945. B. JCDRGENSEN LASTING MACHINE Filed Dec. 30, 1943 5 Sheets-Sheet 2 [nvenfar Oct. 23, 1945. s. JORGENSEN LASTING MACHINE Filed Dec. 30, 1943 5 Sheets-Sheet 3 n m Fm OM W on n w Edd UW hm B mo Z W a w m w ilr l ll ELI v l n. k ,IM 0 Z 9 4 mm 0 m w IMO Ogzt. 23, 1945. B, JbRG ENS EN LASTING MACHINE Filed Dec. '30, 1945 5 Sheets-Shea?! 4 wn m WWW m mw w 0W h hwh B Oct. 23, 1945.

B. JORGENSEN LASTING MACHINE Filed Dec. so, 1943 5 Sheets-Sheet 5 M HHI lnpen far Bernhardt firgensen By his Attorney Patented Oct. 23, 1945 LASTIN G MACHINE Bernhardt J orgensen, Marblehead, Mass., as-

signor to United Shoe Machinery Corporation, Flemington, N. J a corporation of New Jersey Application December 30, 1943, Serial No. 516,253

28 Claims.

This invention relates to lasting machines and is herein illustrated as embodied in a poweroperated machine for lastingthe opposite sides of the foreparts of shoes between their toe por tions and their waist or shank portions in operating on shoes of that kind in which the margin of the upper in those locations is lasted inwardly over an insole into parallel relation to the bottom of the last and is fastened to the insole by cement. The machine herein shown is in many respects similar to that shown in United States Letters Patent No. 2,346,688, granted on April 18, 1944 on an application of mine, and in some aspects the present invention has in view certain improvements in that machine. It should be understood, however, that the invention is not limited to a machine organization of that particular character, and that in some novel aspects also it is not limited to a machine forlasting the sides of shoes.

The machine herein shown, similarly to that shownin the above-mentioned Letters Patent, is provided with wipers, more broadly definable as overlaying members, which are moved widthwise of the shoe at the sides of the forepart to wipe the margin of the upper inwardly over the insole and serve thereafter to press the overwiped margin of the upper on the insole before they are retracted from over the shoe bottom. Associated with the wipers are retarders which are moved outwardly over the insole into positions to clamp the margin of the upper against the edges of the wipers, the retarders preventing the margin of the upper from adhering prematurely to the insole and insuring also that the margin of the insole is properly positioned on the bottom of the last. Early in the lasting operation the retarders are moved inwardly over the insole by the inward on the shoe is automatically terminated only after movements of the wipers while clamping the margin of theupper against the edges of the wipers, after whi'chfthey are moved heightwise of the shoe out or the paths of the wipers and are then movedoutwardly over the wipers as the latter continue theirinward wiping movements.

In order to decrease the work required of the operator, to avoid loss of time and generally to increase the output of the machine, the present invention, in one aspect, provides a construction such that the starting of the power operation of trolled by a member engaged by the toe-end face of the shoe when the shoe is presented to the machine. Without any special attention on the part of the operator, therefore, the lasting means is rendered operativeimmediately upon the presentation of the shoe.

After the margin of the upper has been lasted inwardly over the insole, it is desirable that it shall remain under pressure for a few seconds in order to allow more time for the cement to set. The invention accordingly further provides novel means whereby the pressure of the lasting means a predetermined time interval. In the construction shown the fluid-operated wipers remain in pressure-applying relation to the margin of the upper until electrical control of the above-mentioned valve is terminated, whereupon they are withdrawn by spring means from over the shoe; and to terminate the electrical control of the valve there is provided a fluid-operated timing device arranged to open the switch previously closed by the presentation of theshoe. By variably restricting the flow of fluid to this timing device the length of time that the margin of the upper remains under pressure may be varied. The pressure on the margin of the upper is thus automatically terminated by withdrawal of the wipers irrespective of continued engagement of the shoe with the member which it initially engages to close theswitch.

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 partly in right-hand side elevation and partly in vertical section of a machine in which the invention is embodied;

Fig. 2 is a view similar to Fig. 1 of a portion of the structure there shown, but with the parts in different positions;

Fig. 3 is a vertical sectional view on an enlarged scale of a valve shown in Fig. 1;

Fig. 4 is a view mainly in front elevation of the upper portion of the machine, the position of a shoe in the machine being indicated diagrammatically by broken lines;

Fig. 5 is a plan view of the machine, also illustrating the position of a shoe diagrammatically:

Fig. 6 is a view in side elevation of a portion gii the structure shown at the left-hand side of Fig. 7 is a plan view similar to a portion of Fig. 5, but showing the parts as they appear when the wipers are at the ends of their inward wiping movements over the shoe;

Fig. 8 is a view of the upper portion of the machine partly in right-hand side elevation and partly in section, with the parts in the same positions as illustrated in Fig. 7; and

Figs. 9, 10, 11 and 12 are views partly in front elevation and partly in section, showing one of the wipers and parts closely associated therewith as they appear at different times in the operation of the machine.

The machine is provided with a column 2 on which is supported a frame 4 having a horizontal top plate 6. Supported indirectly by this top plate, through means presently to be described, is a holddown 9 provided with three presser feet Ill (Figs. 1, 8 and 9) arranged to engage the insole on the bottom of the forepart of the shoe to determine the position of the shoe heightwise in the machine. As illustrated, two of these presser feet, which engage the insole at considerable distances from the end of the toe, are spaced apart laterally of the shoe, and the third presser foot is arranged to engage the insole in a location nearer the end of the toe. Accordingly, the presser feet are arranged further to determine the position of the shoe with respect to tipping movements about axes extending lengthwise and laterally thereof. The holddown 8 is provided with a stem l2 extending upwardly into a socket formed in a block l4 and engaged at its upper end by a screw 16 in the block to determine adjustably the position of the holddown relatively to the block. A spring l8 in the stem l2 bears at its lower end on a pin20 which is mounted in the block l4 and extends through a slot in the stem, the spring thus holding the stem at all times up against the screw I6. By adjusting the screw the position of the shoe heightwise may be varied.

The block I4 is pivotally mounted on the front end of a substantially horizontal link 22 and also on the front end of a lever 24 substantially parallel to the link 22. The rear end of the link 22 is pivotally mounted on an upwardly extending forked member 26 fast on the frame plate 6, and the lever 24 is also pivotally mounted between its front and rear ends on a pin 28 on this member. The link 22 and the forwardly extending arm of the lever 24 accordingly have the effect of parallel links supporting the block l4 for upward or downward movement without any tipping movement thereof. The rearwardly extending arm of the lever 24 has pivotally'mounted on its rear end a depending arm 39 provided with a plate 32 an edge of which is arranged normally to extend over the top of a plate 34 fast on the frame plate 6, so that the arm serves asa latch for positively preventing upwardmovement of the holddown 8 in response to pressure of the shoe thereon. A spring 36 connected to the arm 30 and to the plate 6 holds the arm normally in operative position. A further purpose served by this latch arm will be hereinafter explained.

The shoe is positioned laterally in the machine by two side gages 38 arranged to engage it at the opposite sides of the forepart, respectively, these gages comprising plates faced with leather or other suitable material and pivotally mounted on vertical pins 40 supported on the front ends of forwardly and rearwardly extending levers 42. The gages are curved lengthwise of the shoe to approximate the contour of the shoe and by swinging about the pins 40 are permitted to ad- Just themselves to the shoe. The levers 42 are pivotally mounted between their front and rear ends on vertical studs 44 extending downwardly from the top plate 6, and their rearwardly extending arms are forked to embracea rod 46 rotatably mounted on the frame. This rod is provided with right and left screw threads 48 in engagement with corresponding threads in blocks 60 against the outer faces of which the forked rear end portions of the levers 42 bear. A spring 52 connected to fingers 54 on the rear ends of the levers holds the levers constantly against these faces of the blocks. Lengthwise movement of the rod 46 is prevented by two

collars

56 and 58 fast on opposite ends thereof and engaging the frame, the collar 56 being knurled for use in turning the rod. It will be understood that by the turning of the rod the blocks 50 are moved equal distances toward or from each other to adjust the side gages 38 for shoes of different widths. the adjustment being preferably such that while the gages determine the position of the shoe with sufiicient accuracy they do not apply any substantial pressure to the upper. After the shoe has been presented by the operator under the holddown 8 and between the side gages 38, it is clamped against the holddown substantially at the beginning of the power operation of the machine by a shoe rest 60 which engages the top of its forepa-rt underneath as illustrated in Fig. 8. The shoe rest 60 is supported on a lever arm 62 which is fast on a rockshaft 64 mounted in bear ings in the frame. The means for operating the arm 62 to apply the shoe rest to the shoe will be hereinafter described.

For wiping the margin of the upper inwardly over the insole along the o posite sides of the forepart ofthe shoe, the machine is provided, like that shown in the previously mentioned Letters Patent, with a pair of wipers 66 consisting of comparatively thin steel plates which are resiliently flexible in directions heightwise of the shoe to permit them to conform to the contour of the bottom of the shoe. These plates are secured, each by a pair of bolts 68, to forwardly extending arms 10 of bell-crank levers l2 pivotally mounted on studs 14 on the top frame plate 6 to swing about axes extending heightwise of theshoe. The bell-crank levers 12 have other arms 16 extending generally widthwise of the shoe in crossed relation to each other and connected respectively by links 18 to the opposite ends of a bar which is integral with the upper ends of arms 82'of two other bell-crank levers 84 mounted to swing about a rod on the frame, the levers 84 being further joined together by a hub 88 on the rod. The links 18 extend through openings in the bar 89 which are large enough to provide for the necessary play, and they are provided with

nuts

90 and 92 arranged to engage the bar respectively on its.

the links. In response to upward movement of.

wiper-operating mover the piston, therefore, ments are imparted through the bodily movable cured to the top frame plate 6. Return movements of the arms to withdraw the wipers 66 from over the shoe are effected by springs I08 connected to the forwardly extending arms 84 of the bell-crank levers 84 and 'to the frame of the machine, these movements of the arms I being limited by their engagement with shoulders IIO on the caps I06. The caps serve also to prevent the wiper-carrying arms from being sprung upwardly by the upward pressure of the shoe on the wipers. The wipers are maintained in a heated condition, as is preferable in lasting with cement, by electrical heating units H2 mounted in blocks II4 which are secured to the lower faces of the wipers in locations such as to provide for clearance at all times between them and the side gages 38. The heating units are supplied with current from a suitable source through flexible conduits II6 attached to the blocks H4. The studs I4 about which the wipers are swung are so located that the portions of the wipers which act on the margin of the upper have components of movement lengthwise of the shoe toward its toe end, which is desirable in view of the inward curvature of the edge of the shoe bottom heelwardly of the ball line. Since shoes on which the machine operates may sometimes have therein upstanding pulling-over tacks at the sides of the toe, the wipers are provided with recesses II8 to clear such tacks.

In the machine herein shown the upward movement of the piston 98 is further utilized to impart upward swinging movement to the arm 62 and thereby to apply the shoe rest 60 in clamping engagement with the shoe. For this purpose the two bodily movable links 86, through which the wiper-operating bell-crank levers 84 are operated as hereinbefore described, are provided with forward and rearward cam projections I20 (Figs. 1 and 4) arranged to control two'bellcrank levers I22 mounted to swing about rods I24 on the frame. One arm I26 of each of these bell-crank levers carries two rolls I28 normally engaged by inclined cam faces I30 on the projections I20. The other arm I32 of the front bellcrank lever is connected by a pair of links I34 to a pin I36 mounted in the lower end of an inverted U-shaped member I38 to which is secured an upwardly extending rod I40. The other arm I32 of the rear bell-crank lever is similarly connected by a single link I42 to the pin I36. Surrounding the rod I40, between the member I38 and a member I44 confinedon the upper end of the rod by nuts I46 is a compression spring I48. The member I44 has a pair of upwardly extending arms I50 pivotally connected to the front end of the arm 62. At the very beginning of the upward movement of the piston 88, there-' fore, the inclined cam faces I30 act on the rolls I28 to swing the bell-crank levers I22 in the dithe member I44. As the links thereafter continue their upward movements to operate the wipers, the rolls I28 are engaged by vertical faces I62 on the projections I20, as illustrated in Fig. 2.

When a shoe is pressed upwardly against the holddown 8 by the shoe rest 80 as above described, the lever 24 which supports the holddown is held positively against movement in response to pressure of the shoe on the holddown by the latch arm 30. When the wipers 66 are over the shoe bottom it is desirable to increase their pressure on the shoe to insure that all portions of the margin of the upper on which they act will be pressed firmly down on the insole into position to be secured thereto by the cement. The need for such increase of pressure further arises from the fact that the holddown is preferably so adjusted'as to provide substantial clearance initially between the wipers and the insole to assist in guarding against displacement of the margin of the insole by the inward movements of the wipers. The construction herein shown is accordingly such that when the wipers have nearly completed their inward wiping movements the latch arm 30 is swung rearwardly to release the lever 24, thus permitting the shoe rest 60 under control of the spring I48 to force the shoe farther upwardly. For this purpose there is pivotally connected to the lower end of the latch arm 30 a rod I58 extending rearwardly through an opening in the bar 80 carried by the bell-crank levers 88 and having thereon a nut I68 arranged to be engaged by the bar 80 to operatethe latch arm at a time in the movements of the wipers'determined by adjustment of the nut. When the lever 28 is thus released it is swung by the pressure of the shoe on the holddown against the resistance of a light spring I58 mounted between its rear end and the frame plate 6, this spring being provided for thereafter returning the lever into position to permit the latch arm 30 to be returned to its normal position by the spring 36. The spring I58 is held in proper position by a screw I60 extending downwardly within it from the lever 24. When the shoe is thus pressed upwardly against the flexible wipers they bend to conform satisfactorily to the more or less convex curvature of the bottom of the sh'oe,'the bending of the wipers being limited and controlled by screws' I62 on the arms III in the same manner as in the machine shown in the previously mentioned Letters Patent.

Arranged to cooperate with the wipers 66 to control the upper are retarders I64 which clamp the margin of the upper in upstanding position against the edges of the wipers and also serve to press the margin of the insole down on the bottom of the last as the wipers begin to wipe the upper inwardly over the insole. Preferably, as shown, the retarders are curved lengthwise of the shoe somewhat more sharply than the edges of the wipers, so that portions of the upper which may have been previously lasted in the shank or pulled over at the sides of the toe will not prevent the retarders from being moved outwardly as far as desired at the widest portion of the shoe. cal pins I66 supported on the inner ends of outwardly extending arms I68 and are movable about the pins to permit them to adjust themselves to the edges of the wipers. The arms I68 are pivotally mounted at their outer ends for swinging movements h'eightwise of the shoe on pins I10 (Fig. 4) supported on the upper ends of downwardly extending arms I12. Plungers I14 They are pivotally mounted on vertiprematurely thereto.

pressed upwardly by springs I 78 mounted in sockets in the arms I72 engage screws I78 mounted in lugs I80 on the nter ends of the arms I68 and thus tend to swing these arms in directions to lower th retarders I64. The normal positions of the arms I68 with respect to movement about the pins I70 are determined by their engagement with shoulders I82 on the arms I72. When the arms I88 are in these positions the retarders I84 extend downward slightly farther. than the presser feet I on the holddown 8 (Fig. 1), and they are accordingly lifted by the shoe against the resistance of the springs I78. This insures that the retarders will apply effective downward pressure to the margin of the insole.

The arms I72 are pivotally mounted at their lower ends for swinging movements laterally oi the shoe on rods I86 (Figs. 5 and 6) each of which is supported fast in the upwardly extending arms of a U-shaped member I88 having a downwardly extending stem I88 mounted to turn in a bearing formed in a bracket I90 on the frame of the machine. Also mounted to swing about the rods I80 are the forked outer ends of arms I92 (Fig. 4) which extend inwardly toward each other and have rounded inner ends engaged by the forked front ends of the previously mentioned wiper-operating arms 96. When these arms, therefore, are swung upwardly to operate the wipers they impart upward swinging moveinents also to the arms I92. These movements of the arms I92 cause outward swinging movements laterallyv of the shoe to be imparted to the arms I72 by torsion springs I96 which surround the rods I86, one end of each spring bearing against a lug I98 (Fig. 6) on the arm I72 and the other end against a pin I98 mounted in a collar 288 fast on the rod I84, The normal positions of the arms I72 relatively to the arms I82 are adjustably determined by screws 202 which are mounted in extensions 20d of the forked ends of the arms I92 and engage the outer sides of the arms I72.

The outward swinging movements of the arms I72 which result from the upward movements of the arms I92, as above described, serve to move the retarders I68 from positions near the holddown 8 (Fig. 5) outwardly over the insole toward the wipers as the wipers are being moved inwardly toward the side edges of the insole, the retarders thus having a spreading action on the margin of the upper. When the retardersand the wipers arrive in positions to clamp the upstanding margin of the upper between them the retarders preferably are so located that their upper-engaging faces at the widest portion of the shoe are positioned slightly farther outward than the side edges of the insole, as illustrated in Fig. 9, so as to detach from the edges of the insole any portion of the upper which may have adhered In order that the retarders will be properly positioned relatively to the side edges of the insole when the upper is first clamped against them by the wipers in operating on shoes of different widths, the arms I72 are adjusted relatively to the arms I92 by the screws 202 to position the retarders initially at such distances from-the edges of the insole as to insure that result. As the wipers continue their inward movements after having clamped the upstanding margin of the upper against the retarders they force the retarders inwardly against the resistance of the torsion springs I94 by the pressure applied thereto through the margin of the upper. In this manner the wipers and the retarders cooperate to apply an inward pull to the margin of the upper, thus drawing the upper tightly over the edge of the insole. Shortly after the wipers begin to wipe the margin of the upper inwardly over the'insole, however, the retarders are lifted against the resistance of the springs I78 to withdraw them from the paths of the wipers. For this purpose there are mounted on the arms I88 members 208 (Figs. 5 and 9) having ears extending downwardly through slots in the arms and supporting rolls 2I0 which are engaged by the wiper-carrying arms 70 to swing the arms I08 upwardly about the pins I70 and thereby to lift the retarders. The members 208 are clamped on the arms I88 by screws 212 which extend through slots in the members to permit the latter to be adjusted to determine precisely the time in the inward movements of the arms 70 when the retarders are lifted. When the retarders have thus been moved upwardly far enough to clear the wipers they are moved outwardly over the wipers, as the wipers continue their inward movements, by the springs I94 acting on the arms I72. Early in such outward movements of the retarders they serve to bend the margin of the upper outwardly over the edges of the wipers, as illustrated in Fig. 11, and thus to increase the effectiveness of the wipers in wiping the upper tightly and smoothly over the insole. Outward swinging movements to the arms I72 are adjustably limited by screws 2 I4 arranged to engage the arms and mounted in brackets 2I8 on the frame.

Under some conditions it may be desirable that the retarder I64 which cooperates with the wiper acting at the outer side of a right or a left shoe shall be positioned somewhat farther from the end of the toe than the other retarder. Ac-

cordingly the construction herein shown provides for relative adjustment of the retarders lengthwise of the shoe. For this purpose diametrically enlarged portions of the rods I84 extending forwardly of the arms I92 are connected together by a crossbar 2I8 the opposite ends of which are pivotally mounted on pins 220 on the rods, and the right-hand rod I84 is extended still farther forwardly to provide a handle 222 (Fig. 5). By means of this handle, therefore, the two rods I84 may be swung simultaneously in the same directions about the axes of the studs I88, and it will be evident that such swinging movements of the rods are accompanied by swinging movements of the arms I68 in opposite directions respectively lengthwise of the shoe to position one of the retarders nearer the end of the toe and the other farther from the end of the toe. When the retarders have thus been adjusted as required for a right or a left shoe, they will ordinarily maintain their adjusted relation without special retaining means, although such means may be provided if desired.

Upward movement of the piston 98 to operate the wipers and other parts is efiected by operating fluid admitted tothe lower end of the cylinder I00, the construction herein shown being a,ss7,ss1

the tube is in communication with a conduit 282 leading irom a source of compressed air supply. This may be a. general source of supply with which a shoe factory is equipped, or, if desired, a special motor-driven pump may be provided for supplying the compressed air. Between its opposite ends the tube 228 has a partition 284 extending across it, and extending through the tube at the opposite sides of this partition, respectively, are two sets or ports 288 and 288. Movable lengthwise along the tube is a sleeve valve 248 provided with an annular recess 242. When the valve is in its normal position, as shown in Figs. 1 and 3, the ports 288 are open to the atmosphere, and irom that position it is movable to establish communicationthrough its annular recess 242 between the ports 288 and 288 and thus to admit compressed air to the cylinder 188 to operate the piston.

In the construction herein shown movement 01' the valve 248 into position to, admit compressed air to the cylinder 188 as above described is efiected by electrical means controlled by the shoe. Pivotally mounted on the bracket 238 is a bellcrank lever 244 having an upwardly extending arm 246 provided with a pin 248 extending into a groove 258 in the valve 248 and having a forwardly extending arm 252 normally upheld by a spring 254 to maintain the valve in its initial position against the bracket 288. The arm 252 is connected by a link 256 to the upper end of the armature 258 of a solenoid 268. The link is provided with a slot 262 through which extends activate the solenoid 268, thus starting the machine. In addition to its starting function the member 282 serves also as .an end gage to determine the position of the shoe lengthwise in the machine, the movement or the bell-crank lever 284 being limited by a stop screw 881 arranged to engage the arm 282.

After the wipers have been moved inwardly over the shoe bottom to the positions determined by engagement of the arms 18 with the shoulders 184 on the caps 186, it is desirable thatthey shall remain for a fewseconds in pressure-applying relation to the overwiped margin of the upper in order to allow more time for the cement to set. The machine herein shown is provided with means for automatically timing in a'variably predetermined manner such a dwell of the a pin 264 on the arm 252, the pin being engaged I above by a screw 266 which is threaded in the link. By this screw, therefore, the armature 258 may be vertically adjusted relatively to the arm 252. When electrical current is'supplled to the solenoid 268 through wires 268 the armature 258 is moved downwardly to a position determined by engagement of a pin 218 thereon with the topo! a casing 212 inclosing the-solenoid, and by this movement of the armature, the extent of which is determined by adjustment of the screw 266, the valve 248 is moved irito the correct position for admitting compressed air to the cylinder 188. The supply of current to the solenoid is controlled by a switch 214 having a vertically movable contact member 216. This member is engaged on its upper end by a block 218 pivotally mounted at one end on a pin 288 on the rear end of a rearwardly extending arm 282 of a bell-crank lever 284 which is pivotally mounted at 286 on the frame of the machine. block 218 is held normally by gravity on the top of the arm 282 and thereby maintains the block in a substantially horizontal position. The bellcrank lever 284 has an upwardly extending arm 288 controlled by a starting member 282. This member includes two arms 284 pivotally mounted at their upper ends on the same pin 28 which supports the lever 24 and connected together at their lower ends by a crossbar 286 arranged to engage the upper end of the arm 288. Extending across from one of the arms 284 to the other is also a plate 288 arranged to be engaged by the toe-end face of the shoe, as illustrated in Fig. 8, when the operator presents the shoe to the machine. Pressure 0! the shoe against the plate 288 serves to swing the starting member 282 rearwardly and thereby to swing the bell-crank lever 284 in a clockwise direction (Figs. 1 and 8) against the resistance of a torsion spring 888. This causes the block 218 to depress the contact member 216 and thereby to close the switch and A pin 288 on the,

wipers on the margin of the upper. For this purpose a shelf 882 which supports the previously mentioned switch 214 hasdepending there'- irom a cylinder 884 in which is mounted a his ton 886 having a rod 888 extending upwardly therefrom beneath the frontend portion of the switch-controlling block 218. The lower end of the cylinder is in communication through a conduit 318 and a needle valve 312 with the conduit 224 leading to the cylinder 188. Accordingly, when compressed air is admitted to this cylinder to operate the machine, some of the air passes the needle valve 812 and enters the cylinder 884 to move the piston 886 slowly upward against the resistance of a spring 814 in the cylinder. When the piston has been moved upwardly far enough to cause the upper end of the rod 888 to engage the block 218, as illustrated in Fig. 8, a slight further movement thereof serves to tip the block about the pin 288 and thus causes the block to release the contact member 216 of the switch 214.

This breaks the circuit of the solenoid 268, whereupon the valve 248 is immediately returned to its initial position by the spring 254, thus releasing the compressed air from the cylinder I88 and causing the parts of the machine to be returned to their starting positions. It will be understood that the time which elapses before the circuit is thus broken and therefore the length of the dwell of the wipers on the margin of the upper depends upon the adjustment of the needle valve 312. To permit the piston 886 to be returned more quickly by its spring 814, a by-pass 816 is provided for the escape of air from the cylinder 884, this by-pass having therein a check valve 318.

The manner of operation of the machine will now be briefly summarized. The operator presents a shoe between the side gages 881 with its insole in contact with the retarders 164 and with its toe-end face in engagement with the plate 288 of the starting member 282, and by pressing the shoe against this plate swings the starting member rearwardly. By the action of the starting member on the bellcrank lever 284 the contact member 216 of the switch 214 is moved downwardly to establish a circuit through the solenoid 268, whereupon the valve 248 is moved by the solenoid into position to admit compressed air to the cylinder 188. By upward movement of the piston 88 operative movements are then imparted to the wiper-operating bell-crank levers 84. At the beginning of the upward movement of the piston the two bell-crank levers 122 are operated by the cam faces 188 on the projections 128 of the links 86 to move the shoe rest 68 upwardly into position to clamp the shoe against the presser feet 18 of the holddown 8, the spring 148 being compressed to maintain the shoe rest in clamping position. This action of the shoe rest on the shoe causes the latter to raise the retarders I04 slightly until the insole engages the presser feet I0. As the piston continues its upward movement to operate the wipers the rolls I of the bell-crank levers I22 rest against the vertical faces I02 of the projections I20, as shown in Fig. 2. Simultaneously with the inward movements of the wipers the arms I02 are swung upwardly to cause the springs I04 to impart outward swinging movements to the arms I12 and thereby to move the retarders I04 outwardly over the insole toward the incoming wipers. The retarders thus serve to spread portions of the margin of the upper outwardly from over the insole, and when they arrive in positions where their upper--v engaging faces at the widest portion of the shoe are positioned slightly farther outward than the side edges ofthe insole, as illustrated in Fig. 9, the wipers arrive in positions to clamp the up standing margin of the upper against them. As the wipers thereafter continue their. inward movements they force the retarders inwardly against-the resistance of the springs I94, and in this operation the wipers and the retarders serve to apply an inward pull to the margin of the upperover the extreme .edge of the insole, as

' illustrated in Fig. 10, the retarders at the same time pressing the margin of the insole down on the last to prevent it from being displaced by the wipers. Substantially at the time in the operation of the machine indicated by Fig. 10 the wiper-carrying arms 10 arrive in positions to engage the rolls H0, and by their further movements they act on these rolls to swing the arms I68 upwardly against the resistance of the springs I16 and thereby to lift the retarders I64. When the retarders have thus been lifted far enough they are moved outwardly over the wipers by the action of the springs I94, and early in such outward movements they serve to bend the margin of the upper outwardly over the edges of the wipers, as illustrated in Fig. 11, thus increasing the effectiveness of the wipers in wiping the margin of the upper tightly inward over the insole. In completing their inward movements the trolled by contact of the shoe therewith for starting the operation of said power-operated means.

2. In a lasting machine, lasting means movable to lay the margin of an upper inwardly over an insole on a last, power-operated means for thus operating said lasting means, and starting means including a member movable by pressure of the upper thereon upon presentation of the shoe to wipers wipe the margin of the upper throughout its width into parallel relation to the insole, as shown in Fig. 12. Shortly before thewipercarrying arms In arrive in the positions determined by their engagement with the shoulders I04, the bar 80 of the bell-crank levers 84 acts on the nut I58 to swing the latch am 30 rearwardly and; thus to release the holddown 8. The

spring I48 controlling the shoe rest 60 then serves to force the shoe farther upwardly against the wipers to increase their pressure on the margin of the upper and to cause them to bend into better conformity to the contour of the shoe bottom. The wipers having completed their inward movements, they remain in pressure-applying relation to the margin of the upper until the piston 306 has been raised far enough by the compressed air admitted beneath it through the needle valve 3I2 to cause the rod 308, by tipping the block 218, to release the contact member 216 of the switch 214. When the circuit through the solenoid 260 is thus broken the valve 240 is returned by the spring 254, uncovering the ports 236 to permit exhaust of the compressed air from the cylinder I00 and also from the cylinder 304. The parts are then returned to their initial positions, the wipers being withdrawn from over the'shoe by the action of the springs I08 on the bell-crank the machine to start the operation of said poweroperated means.

3. In a, lasting machine, lasting means movable to lay the margin of an upper inwardly over an insole on a last, power-operated means for thus operating said lasting means, and electrical means controlled by the shoe for starting the operation of said power-operated means.

4. In a lasting machine, lasting means movable to lay the margin of an upper inwardly over an insole on a, last, power-operated means for thus operating said lasting means, electrical means for starting the operation of said power-operated means, and mechanism movable by contact of the shoe therewith upon presentation of the shoe to the machine to render said electrical means operative.

5. In a lasting machine, lasting means movable to lay the margin of an upper inwardly over an insole on a last, power-operated means for thus operating said lasting means, a solenoid for starting the operation of said power-operated means electrically, and a switch controlled by the shoe for energizing said solenoid.

6. In a lasting machine, lasting means movable to lay the margin of an upper inwardly over an insole on a last, fluid-operated means for thus operatingsaid lasting means, and means controlled by the shoe for admitting operating fluid to said fluid-operated means.

7. In a lasting machine, lasting means movable to lay the margin of an upper inwardly over an insole on a last, fluid-operated means for thus operating said lasting means, a valve movable to admit operating fluid to said fluid-operated means, and means for thus moving said valve in response to presentation of the shoe to the machine.

8. In a lasting machine, lasting means movable to lay the margin of an upper inwardly over an insole on a last, fluid-operated means for thus operating said lasting means, a member arranged to be engaged by the upper, and means for admitting operating fluid to said fluid-operated means in response to pressure of the upper on said member.

9. In a lasting machine, lasting means movable to lay the margin of an upper inwardly over an insole on a last, fluid-operated means for thus operatmg said lasting means, a valve movable to admit operating fluid to said fluid-operated means, electrical means for thus moving said valve, and a switch controlled by the shoe for energizing said electrical means.

10. In a. lasting machine, lasting means movableto lay the margin of an upper inwardly over .an insole on a last, fluid-operated means for thus operating said lasting means, a valve movable to admit operating fluid .to said fluid-operated means, a solenoid for thus moving said valve electrically, a switch for energizing said solenoid,

' wipe the margin of 'an upper inwardly over an insole on a last at the opposite sides of the forepart, power-operated means for thus operating said wipers, electrical means for starting the operation of said power-operated means, and mechanism controlled by contact of the toe-end face of the upper therewith for energizing said electrical means.

13. In a lasting machine, wipers movable to wipe the margin of an upper inwardly over an insole on a last at the opposite sides of the forepart, fluid-operated means for thus operating said wipers, valve mechanism movable to admit operating fluid to said fluid-operated means, a member arranged to be engaged by the toe-end face of the upper, and means for operating-said valve mechanism thus to admit the fluid in response to pressure of the upper on said member.

14. Inga lasting machine, wipers movable to wipe the margin of an upper inwardly over an insole on a last at the opposite sides of the forepart, fluid-operated means for thus operating said wipers, a member arranged to be engaged by the toe-end face of the upper, and electrically operated means for admitting operating fluid to said fluid-operated means in response to pressure of the upper on said member.

15. In a lasting machine, lasting means movable to lay the margin of an upper inwardly over an insole on a. last, power-operated means for thus operating said lasting means and for maintairiing the latter thereafter in pressure-applying relation to the margin of the upper, a member arranged to be engaged by the shoe, means for rendering said power-operated means thus operative in response to pressure of the shoe on said member, and automatic means for terminating the pressure of said lasting means on the shoe after a variably predetermined interval irrespective of continued engagement of the shoe with ing relation to the margin of the upper, a member arranged to be engaged by the shoe, electrical means for rendering said power-operated means thus operative in response to pressure of the shoe on said member, an automatic timing device for terminating the electrical control of said power- .operatcd means after a predetermined interval irrespective of continued engagement of the shoe with said member, and automatic means for withdrawing said lasting means from the shoe when the electrical control is thus terminated.

17. In a lasting machine, lasting means movable to lay the margin of an upper inwardlyover aninsole on a last, fluid-operated means for thus operating said lasting means and for maintaining the latter thereafter in pressure-applying relation to the margin-of the upper, a member arranged to be engaged by the shoe, valve mechanism for admitting operating fluid to said fluidoperated means in response to pressure Of the shoe on said member and for thereafter releasing the fluid therefrom, a fluid-operated timing device for automatically causing such release of the fluid after a predetermined interval by control of said valve mechanism irrespective of continued engagement of the shoe with said memher, and automatic means for withdrawing said lasting meansirom the shoe when the fluid is thus released.

18. In a lasting machine, lasting means movable to lay the margin of an upper inwardly over an insole on a last, fluid-operated means for thus operating said lasting means and for maintaining the latter thereafter in pressure-applying relation to the margin of the upper, a member arranged to be engaged by the shoe, electrically operated means for admitting operating fluid to said fluid-operated means in response to pressure of the shoe on said member and for thereafter releasing the fluid therefrom when electrical control of said electrically operated means is terminated, an automatic timing device for terminating such electrical control after a variably predetermined interval irrespective of continued engagement of the shoe with said member, and automatic means for withdrawing said lasting means from the shoe upon release of "the flui from said fluid-operated means.

19. In a lasting machine, lasting means movable to lay the margin of an upper inwardly over an insole on a last, fluid-operated means for thus operating said lasting means and for maintaining the latter thereafter in pressure-applying relation to the margin of the upper, a member arranged to be engaged by the shoe, an electrically operated valve for admitting operating fluid to said fluid-operated means in response to pressure of the shoe on said member and for thereafter releasing the fluid therefrom when electrical control of the valve is terminated, a fluid-operated timing device for automatically terminating such electrical control after a variably predetermined interval irrespective of continued engagement of the shoe with said member, and automatic means for withdrawing said lasting means from the shoe upon release of the fluid from said fluid-operated means.

20. In a lasting machine, lasting means movable to lay the margin of an upper inwardly over an insole on a last, fluid-operated means for thus operating said lasting means and for maintaining the latter thereafter in pressure-applyingrelation to the margin of the upper, a valve movable to admit operating fluid to said fluid-,

for automatically de-energizing said electrical means by control of said switch after a variably predetermined interval irrespective of continued engagement of the shoe with said member, said valve being movable to release the fluid from said fluid-operated means when the electrical means is thus de-energized, and automatic means for withdrawing said lasting means from the shoe upon release of the fluid from said fluid-operated means. 3

21. In a lasting machine, lasting means movable to lay the margin of an upper inwardly over an insole on a last, power-operated means for thus operating said lasting means and for maintaining the latter thereafter in pressure-applyin relation to the margin oi the upper, electrical means for rendering said power-operated means thus operative, an automatic timing device for de-energizing said electrical means after a predetermined interval, and automatic means for withdrawing said lasting means from the shoe when the electricalmeans is thus de-enersized.

22. In a lasting machine, lasting means movable to lay the margin of an upper inwardly over an insole on a last, fluid-operated means for thus operating said lasting means and for maintaining the latter thereafter in pressure-applying relation to the margin 01' the upper, electrically operated means for admitting operating fluid to said fluid-operated means and for thereafter releasing the fluid th'ereirom when electrical control of said electrically operated means is terminated, an automatic timing devicefor terminating such electrical control after a'variably predetermine interval, and automatic meansfor withdrawing said lasting means from the shoe upon release of the fluid from said fluid-operated means. 23. In a lasting machine, lasting means movable to lay the margin of an upper inwardly over an insole on a last, fluid-operated means for thus operating said lasting means and for maintaining the latter thereafter in pressure-applying relation to the margin of the upper, electrically operated means for admitting operating fluid to said fluid-operated means and for thereafter releasing the fluid therefrom when electrical control of said electrically operated means is terminated, a fluid-operated timing device for terminating such electrical control after a predetermined interval, meansfor variably restricting the flow of fluid to said timing device to vary the length of said interval, and automatic means for withdrawing said lasting means from the shoe upon release of the fluid from said fluid-operated means.

'24. In a lasting machine, lasting means movable to lay the margin of an upper inwardly over an insole on a last, electrically controlled powero erated means for thus operating said lasting means and for maintaining the latter thereafter in pressure-applying relation-to the margin of l the upper until electrical control of said poweroperated means is terminated, and automatic means for terminating such electrical control after a variably predetermined interval.

25. In a lasting machine, lasting means movable to lay the margin of an upper inwardly over an insole on a last, electrically controlled poweroperated means for thus operating said lasting means and for maintaining the latter th'ereai'ter in pressure-applying relation to the margin of the upper until electrical control of said poweroperated means is terminated, and a fluid-operated timing device for automatically terminating such electrical control after a predetermined interval.

26. In a lasting machine, lasting means movable to lay the'margin 01' an upper inwardly over an insole on a last, electrically controlled fluidoperated means for thus operating said lasting means and for maintaining the latter thereafter in pressure-applying relation to the margin 01' the upper until electrical control of said fluidomrated means is terminated, and an'automatic timing device for terminating such electrical con- I trol after a variably predetermined interval. Y

27. In a lasting machine, lasting means movable-to lay the-margin oi an upper inwardly overan insole on a last, electrically controlled fluidoperated means for thus operating said lasting means and for maintaining the latter thereafter in pressure-applying relation to the margin of r the upper until electrical control of said fluidoperated means is terminated, a fluid-operated timing device for terminating such electrical control after a predetermined interval, and

means for variably. restricting the flow oi operating fluid to said timing device.

28. In a lasting machine, lasting means movable to lay the margin of an upper inwardly over an insole on a last, fluid-operated means for thus operating said lasting means and for maintaining the latter thereafter in pressure-applying relation to the margin of the upper until fluid is released from said fluid-operated means, electrically controlled valve mechanism for admitting operating fluid to said fluid-operated means and for thereafter releasing the fluid therefrom when electrical control of said mechanism is terminated, and a fluid-operated timing device for automatically terminating such electrical control alter a predetermined interval.

. BERNHARUI JORGENSEN;