US2298390A - Lasting machine - Google Patents

Description

O 1942- R. H. LAWSON 2, 93,3 0

LASTING MACHINE Filed Aug. 13, 1940 4 Sheets-Sheet 1 LASTING MACHINE Oct 13, 1942. R. H. LAWSON LASTING MACHINE 4 Shee1; 5

Filed Aug. 13, 1940 & um 2 a r R. H. LAWSON 2,298,39 0

LASTING MACHINE Filed Aug. 13, 1940 4 Sheets-Sheet 4 v M: F

Patented Oct. 13, 1942 LASTING MACHINE Robert H. Lawson, Beverly, Mass., assignor to United Shoe Machinery Corporation, Flemington, N. .L, a corporation of New Jersey Application August 13, 1940, Serial No. 352,449

36 Claims.

This invention relates to'machines for use in the manufacture of shoes and is illustrated herein as embodied in a lasting machine.

It is an object of this invention to provide an improved side lasting machine particularly adapted to operate on a prewelted shoe 'upper (that is, a shoe upper to the lower marginal portion of which a strip of welting has been secured, for example by stitching, prior to the lasting operation). to operate from the heel breast line to the tip line and is provided with means for engaging the shoe upper along each side thereof to tension it heightwise of the last and to work its marginal portion along each side thereof over the last bottom or insole usually supported on the last bottom, and finally for adhesively securing the opposite marginal portions of the'shoe upper, including the strip of welting, in lasted relation to the last and the insole by the application of pressure thereto.

The illustrated machine is of the same general type as the lasting machines disclosed in United States Letters Patent No. 1,854,204, granted April 19, 1932, and No. 1,963,170, granted'JunelQ, 1934,

both upon applications filed in my name. It should be understood, however, that many features of the invention are not limited in their utility to embodiment in lasting machines of this type sincethey may be utilized to advantage in 1 other types of lasting machines and, indeed, in

machines for performing operations other'than.

lasting. The illustrated machine is constructed and arranged to operate simultaneously upon the opposite sides of a shoe upper, and accordingly,

it is provided with'two individual operating units, hereinafter termed lasting units, for working the opposite sides of the shoe upper over thelast and for adhesively securing the marginal portions of the shoe upper in lasted relation to the insole and the last. The two lasting units, in accordance with a feature of this invention, are spring operated to move yieldingly toward each other so as to tension the opposite sides of the shoe upper yieldingly over the last.

The illustrated machine, like the machines disclosed in the above-mentioned patents, is provided with a jack arranged to receive the last upon which are assembled the shoe upper and the insole, the jack serving to present the work to the lasting units and to move it past these units during the lasting operation so as to insure a continuously progressive lasting of the opposite margins of the shoe upper. As in the machines disclosed in said patents, the jack is constructed The illustrated machine is' arranged and arranged to control, in accordance with the size of the, shoe mounted thereon, the setting of mechanism which determines the length or extent of the work feeding movement of the jack as well as the speed of that movement. Moreover, the same mechanism is instrumental in determining the initial spacing of the lasting units transversely of the shoe so that the lasting units are spaced apart in accordance with the width of the portion of the shoe where the lasting operation is to begin. The. lengthwise or feeding movement of the jack is, as in the prior machines, under the control of a cam mechanismwith the distinction, howeveifl that in accordance with the present invention the cam mechanism is constructed and arrangedto impart a continuous feeding movement to the jack.

It is to be noted also that the jack is mounted for rocking movement about an axis parallel with and transverse tothe bottom of the last to maintain the portion of the insole, adjacent towhich the lasting is-being-performed,-at all times in the same plane with relation to the lasting units, despite variations in the surface of the insole on the last bottom.

In accordance with another feature ofthe invention each lasting unit is provided with upper tensioning means'eng-aging-the-welt crease of a prewelted shoe upper for progressively working the shoe upper over the last and, in particular, for progressively working the marginal portion of the shoe upper over the marginal portion of the insole, and with rotary pressing means for applying pressure to theoverlasted marginal portion of the upper or the strip of welting secured thereto forthe purpose of adhesively securing the marginal portion of the upper in lasted relation to the insole and the last.

While in the above and in the following specification reference is had to an insole, it is to be understood that the invention is not limited in its utility to the use of an insole and that the term insole may be construed to embrace other shoe bottom parts. Moreover, it is to be understood that in cases where the prewelted shoe upper is scant and the welt is exclusively relied on to form the lasting allowance of the upper, the marginal portion of the shoe upper referred to herein actually is the strip of welting which is secured to the marginal portion of the upper prior to the pulling-over and lasting operations and hence is considered a part of the shoe upper.

With the above and other objects and features in view, the invention will now be described with reference to the accompanying drawings, which illustrate a preferred embodiment of the invention, and pointed out in the claims.

In the drawings,

Fig. l is a view in right-hand side elevation of a side lasting machine in which the present invention is embodied, with parts broken away to show more clearly the construction thereof;

Fig. 2 is a view of a horizontal section taken below the head of the machine and with the top portion of the base broken away to show the mechanism therebelow;

Fig. 3 is a plan view of the jack and parts of the mechanism for controlling the extent and rate of speed of the feeding movement of the jack;

Fig. 4 is a view of the head of themachine in left-hand side elevation;

Fig. 5 is a detail view, partly in section, of the two lasting units in engagement with the work :I and I Fig. 6 is aview of part of the mechanism shown in Fig. 5 operating on a prewelted upper of diflerent construction.

General organization of the machine .The illustrated side lasting machine is provided with a. box like base or frame 50 (Figs. 1 and 2)- carrying a head 52 (Fig. 1) which supports at the front of the machine a pair of lasting units 54, 56 each' provided with means for working a prewelted shoe upper into lasted relation to a last and insole. The lasting units are arranged simultaneously to engage the opposite marginal portions of the upper to tension both sides of the upper heightwise of the last and to work the opposite marginal portions of the upper inwardly over the insole on the last. Beneath the lasting units 54, 56 is a jack 58 connected by a universal joint to a support mounted for movement in a direction substantially perpendicular tothe bottom of the shoe and supported by a carrier mounted for movement in a direction extending longitudinally of the shoe.

The work shown in Fig. 5 as operated on by the lasting units comprises a shoe upper U the lower marginal portion of which is engaged between and secured to the split flaps of a flanged portion of a welt W, this prewelted. upper being mounted on a last L'which carries the customary insole I.

In Fig. 6 there is illustrated a part of the lasting mechanism of the present machine as operating upon. the conventional type of prewelted shoe upper; The work illustrated in Fig. 6 comprises a shoe upper U, to the lower marginal portion of which a flat piece of welting W has been stitched with the inner edge of the welting flush with the edge of the upper. The prewelted upper U is mounted on a last L which carries an insole I. The operations on the shoe uppers shown in Figs. 5 and 6 are substantially the same.

The lasting. units 54 and 56 are constructed and. arranged to move simultaneously toward or from each other. Each unit is rotatable about an axis substantially perpendicular to the bottom of the last in operative position but both units are irmnovable in vertical direction. The jack upon which is mounted the last L having assembled thereon the upper U is, as in the machines disclosed in the above-mentioned patents, yieldingly urged upwardly by' a spring (not shown) and means is provided, hereinafter described, for imparting to the jack a continuous work feeding movement to carry the last and shoe past the lasting units.

The lasting units and their operation As pointed out, the machine is provided with a pair of lasting units for working the upper over the last, that is, more specifically, for tensioning the opposite sides of the upper over the last and working the opposite marginal portions of the upper into lasted relation to the insole and the last and for adhesively securing these marginal portions in this lasted relation. Since both lasting units are similar in construction and arrangement it will be sufficient to describe only one of them. As illustrated in Fig. 5, each lasting unit comprises a cylindrical support IIO having at its lower extremity an outwardly extending flange H2 and carrying on its upper extremity a clamping collar I I4. The cylindrical support H0 is received in a sleeve II6 which is part of a block provided with oppositely extending trunnions I20 and I22 (Figs. 4 and 5) rotatably mounted in the head 52 of the machine. The cylindrical support H0 is provided in its middle. and lower portion with a recess I24 and in this recess is arranged a toggle comprising links I26, I20 pivotally joined by a pin I30, the toggle serving the purpose of moving the creaseengaging element of the lasting unit into operative position, as will be described. One end of the toggle link I 28 is pivotally mounted on a pin I32 fixed in the support I I0. Also pivotally mounted on the. center pin I30 of the toggle is an upwardly extending rod I 34 which is actuated to make or break the toggle. The outer extremity of the toggle link I26 is pivotally secured to'the upper end of a rocker arm I36 which is mounted. for rocking movement about a pin I38 fixed in the lower portion of the support H0. The rocker arm is provided with a bore I40 in which is received a spindle I42 held in adjusted position lengthwise of the bore I40 by lock nuts I44 carried on the threaded upper end of the spindle I42. Secured to the lower end of the spindle is a disk I46 having its periphery tapered in cross-section and adapted to be moved into enga ement with the welt crease.

The lower portion of the cylindrical support IIO of each lasting unit is provided with a recess I48 arranged at right angles to the recess I24 through which extends, in a direction transversely of the last supported on the jack, a pin I50 upon which is rotatably mounted a frustoconical block I52 provided atits smaller end with an annular groove of semicircular cross-section. Thi groove serves as a guide for a ring I54 surrounding the block I52, the ring having a diameter substantially larger than the largest diameter of the frusto-conical block I52 and having a semicircular cross-section corresponding in size to that of the annular groove provided in the block l52. As will be seen, the ring I54 is freely rotatable and is capable of tilting movements in opposite directions transversely of the last supported on the jack for the purpose of accommodating last bottoms of different slants and for applying pressure upon the overlasted marginal portion of the upper, that is to say, the inwardly extending flange of the welt secured to the upper, so as to secure the upper in lasted relation to the last by cement. To prevent th ring I54, after-the removal of the work from the machine, from dropping so far that it would extend downward a considerable distance from the lowermost end of the lasting unit, a detent finger I56 is provided in the lower end of the support IIO, the finger I56 serving to catch and hold the ring I54 in an elevated position when the work is removed from beneath the lasting units.

As already stated, the rod I34 serves to actuate the toggle I26, I28, the arrangement being such that in the extended position of the toggle, as illustrated in Fig. 5, the rocker arm I36 is so positioned that the disk I46 is in its operative crease-engaging position in which it acts on the upper to tension it over the last and lay its marginal portion over the marginal portion of the insole. When the toggle is broken, the disk I46 is retracted into its inoperative position (Fig. 4).

For the purpose of simultaneously and uniformly operating the toggles I26, I28 of both lasting units the upper ends of both rods I34 are connected by ball joints to the opposite ends of a lever I58 (Fig. 4) provided at its mid portion with both an upwardly extending lug and a downwardly extending lug. The lever I58, which may be considered an equalizing lever, is guided for straight up-and-down movement by parallel links, one of the links being an arm I60 fulcrumed at its lefthand end to the machine frame and pivotally connected at its right-hand end to the upwardly extending lug of the lever I58. The other parallel link is the right-hand arm of a lever I62 pivotally secured midway between its ends to the machine frame in vertical alinement with the fulcrum of the arm I60 and pivotally connected at its right-hand end to the downwardly extending lug of the lever I58. The left-hand end of the lever I62 is pivotally connected to a downwardly extending rod I64 controlled by a spring I65 (Fig. 1) which tends to move'the rod into its elevated position and to depress the toggle operating rods I34 to straighten the toggles I26, I28 thereby yieldingly moving the disks I46 into crease-engaging positions. The lower end of the rod I64 is connected to the forward end of a lever I66 (Figs. 1 and 2) carrying a follower roll which is held against a cam I68 (Fig. 1) by the spring I65. The cam is so designed as to break the toggles I26, I 28 at the end of a lasting operation so as to move the disks I46 out of creaseengaging position. The cam I68 is secured to a shaft I which corresponds to the shaft 480 of the above-mentioned Patent No. 1,963,170.

The mechanism for moving the lasting units inwardly and outwardly For the purpose of moving the lasting units 54, 56 inwardly and outwardly with respect to and transversely of the last supported on the jack and positioned in the machine in operative relation to the lasting instrumentalities, the following mechanism is provided. Pivotally secured at I12 (Fig. 4) to the inner lasting unit 56 is an arm I14 having an enlarged upper end provided with gear teeth meshing with similar teeth provided on the lower end of an arm I16 which is rigidly secured to the above-mentioned block II6 tiltable about the axes of the trunnions I20 and I22. Pivotally mounted on the pin I12 is a link I18 (Fig. 1) connected to the upper end of a short lever I80 pivoted midway between its ends on a lug depending from the head 52. The lower end of the lever I80 is connected by a similar link I82 to the outer lasting unit 54. The arm- I14 is engaged by one end of a spring I84 (Figs. 1 and 4) the other end of which is connected to one arm of a bell-crank-lever I 86 the other arm of which is connected to a downwardly extending rod I88.

As in the machines of the above-mentioned patents, the lower end of the rod I88 is pivotally connected to a lever I90 carrying a follower roll which is held by the spring I84 against a cam I 92 mounted on the shaft I10.

scribed connections, both lasting units yieldingly toward each other as far as permitted by the resistance of the work, to tension both sides of the upper yieldingly over the last. The cam I92 is designed to maintain the tension of the spring I84 uniform and hence to maintain constant the force which yieldingly moves the lasting units inwardly by compensating for any additional tensioning of the spring I84 caused by an increase in the width of the work. Upon increase in the width of the work the two lasting units are spread apart and the right-hand end of the I spring I84 is moved toward the right in Fig. 4. Consequently, the rod I88 will be permitted to rise sufiiciently to let up on the spring so as to compensate for the increase in the tension of the spring caused by the above-mentioned movement of the right-hand end of the spring I84 toward the right in Fig. 4. In particular when, during the continuous feeding of the work by the jack past the lasting units, the lasting operation passes from the shank portion to the ball portion of the shoe, the cam I92 will automatically cause the spring tension to be kept uniform regardless of the increased width of the work at that portion.

The mechanism for initially spacing the lasting units The lower end of the arm I14 is connected by a rod I96 (Fig. 4) to an arm I91 fixed on the upper end of a vertical rockshaft I98 on the lower end of which is secured a similar arm 200 (Figs. 3 and 4). For the purpose of initially spacing both lasting units 54, 56 in accordance with the size of the shoe to be operated upon and, more particularly, in accordance with the width of the portion of the shoe where the lasting operation is about to begin, the arm 200 is pivotally connected by a link 202 (Fig. 3) to a transversely sliding rod 204 carrying at its left-hand end (Fig. 3) a cam roll 206 engaging the curved face 208 of a cam block secured to one end of a lever 2I0 pivotally mounted on a fixed stud 2I2. The left-hand end (Fig. 3) of the lever 2 I0 carries a roll 2 I4 engaged in an inclined cam groove provided in a cam member 2I6 fixed to a lever 2I8 hereinafter termed a feed lever. This arrangement is similar to the corresponding arrangement in the machines of said patents. As will be explained, the feed lever 2I8 is moved into a predetermined position prior to the initiation of each lasting operation in accordance with the size of the shoe to be operated upon and this setting of the feed lever 2I8 in turn determines, by means of the above-described connections, the spacing of the lasting units prior to initiation of the lastin operation.

In order to insure that this mechanism for initially spacing the lasting units is disconnected from the lasting units during the lasting operation, a toggle 220, 222 (Fig. 3) is connected to the transversely sliding bar 204 and is actuated in a manner similar to that described in the above-mentioned patents by a forwardly and rearwardly sliding rod 224 carrying collars 225 and 228; the rod 224 corresponding substantially to the rod 910 of said Patent No. 1,963,170. Upon jacking of the shoe the rod 224, by reason of its forward movement in the machine which, as in the, machines of the above-mentioned patents,

The spring. I84 tends to move, by means of the above-de-.

occurs at that time, causes the toggle 228, 222 to be straightened and the mechanism for initially spacing the lasting units to be rendered operative. After the jackin of the shoe and immediately prior to the initiation of the lasting operation, the rod 224 is caused to slide rearwardly in the machine under control of mechanism which may be, and preferably is, of the type disclosed in the above-mentioned patents, thereby breaking the toggle 220, 222 due to the engagement of the collar 228 with the toggle and disconnecting the mechanism for initially spacing the lasting units.

The mechanism for turning the lasting units Means which will now be described is provided for turning the lasting units about axes extending approximately at right angles to the top surface of the insole of the shoe being operated upon, thereby maintaining the proper position of the lasting instrumentalities with relation to the curved edge of the insole. As has already been pointed out, the lasting units are each provided with a cylindrical support IIB mounted in a sleeve H6, each cylindrical support H0 having clamped to its upper end a collar H4. Each collar H4 is connected by a ball joint to a link 230 (Fig. 4) which in turn is connected by a ball joint 232 to a bell crank 234. The bell crank 234 for the outer lasting unit 54 is connected by a rod 236 to an arm 244 secured to the upper end of a vertical shaft 248. The bell crank 234 for the inner lasting unit 56 is connected by a rod 238 to an arm 246 secured to the upper end of a vertical shaft 250. The rods 236 and 238 are engaged by springs 240 and 242, respectively, which tend to move the rods toward the left of Fig. 4 thereby to rotate both lasting units into a predetermined relative position. The lower extremities of both vertical shaft 248 and 250 are joined by connecting mechanism 252 (Fig. 1), as in the machines of the above-mentioned patents, to the upper ends of two vertical shafts 254, 256. Secured to the lower ends of the shafts 254 and 256 are arms 258 and 260 (Fig. 2) which are connected by rods 262, 264 to levers 266, 268 fulcrumed on a shaft 210 corresponding to the shaft 496 disclosed in the above-mentioned Patent No. 1,963,170. The lever 266 is rigidly connected with a lever 212 (Fig. l) which carries on its free extremity a cam roll engaging an appropriately formed cam member of a bank of pattern cams. Similarly, the lever 268 is rigidly connected to a lever 214 also carrying a follower roll at its free extremity, the roll engaging another appropriately formed cam member of the same bank of pattern cams. These cams which actuate the levers 212, 214 and the above-described mechanism connected thereto are of such configuration as to turn the lasting units about their approximately vertical axes for the above-described purpose.-

The jack amd its operation As already stated, a jack 58 is provided to carry the last L on which is assembled the shoe upper U and the insole I. The jack 58 is the same in the construction and the arrangements of its parts as the jack disclosed in the above-mentioned Patent No. 1,963,170 and has heel and toe rests pivotally mounted so as to permit a tipping movement of the shoe about an axis extending longitudinally of the shoe in substantially the plane of the sole. The jack 58 comprises a U-shaped upper portion having a pair of upwardly extending arms 280, 282 (Fig. 3) and a downwardly extending spindle 284 (Fig. 1) connected to a sliding support 286 by a universal joint, the support being mounted in a carrier 28! corresponding to the carrier 802 in said Patent No. 1,963,170. The toe rest for the shoe comprises a suitably shaped block 288 (Fig. 3) and the heel portion of the last is supported on a pin 290 adapted to enter the usual thimble hole in that portion of the last, substantially as disclosed in the above-named patent. Moreover, the jack, as in the prior construction, is provided with a ball-shaped gage 292 which is shifted in the longitudinal direction of the shoe upon jacking, the extent of the lateral shifting of the gage 292 depending upon the size of the shoe to be operated upon. The ball-shaped gage 292 is arranged to contact with a cam member 293 (Figs. 1 and- 3) secured to the forward end of a Sliding rod 294, the forward and rearward movements of which are controlled by mechanism which may be, and preferably is, of the type disclosed in the prior Letters Patent No. 1,854,204, hereinbefore mentioned. For the present purpose it is suflicient to note that, after the shoe has been placed on the jack, the operator takes hold of the jack and swings it rearwardly, bringing the gage 292' into position underneath the cam member 293 and then permitting the jack to rise under the influence of a spring (not shown) so that the gage 292 may contact with the cam member 293. Since the position of the gage 292 varies according to the length of the shoe on the jack, the position of the jack transversely of the machine, therefore, is determined in accordance with the size of the shoe. The larger the shoe the further the jack will be moved to the right.

The jack 58 of the illustrated machine is provided with shoe jacking and unjacking mechanism automatically actuated by a pulley 295 (Fig. 2) mounted at the upper end of the jack support 286 (Fig. 1) through a universal joint and a shaft 296 (Fig. 2) extending upwardly through the jack spindle 284, the construction and operation of this mechanism being the same as that disclosed in said Patent No. 1,963,170. The pulley 295 is rotated by a cable 298 which passes about the pulley 295, thence rearwardly and to the left, as shown in Fig. 2, and then downwardly about guide pulleys, one of these pulleys being secured to a weight 300. From the pulley secured to the Weight 300 the cable 298 passes upwardly and is connected to a chain 302 (Fig. 2) which continues upwardly and passes about fixed pulleys 304 and 306, thence laterally about a pair of pulleys 308 carried by a lever 3 l 0 known as the fulcrum lever and then to the left to an anchorage on the previously-mentioned feed lever 2 l8 which is fulcrumed to the rear left-hand side of the machine base 50. The other end of the cable 298 extends rearwardly and passes about a guide roll 312 mounted upon the end of a freely swinging arm 3l4 pivoted to the machine frame and then to the right about a large pulley (not shown) to which the end of the cable is secured. This pulley is mounted on a short shaft 3l8 and is rigidly connected with a spur gear 320 which meshes with a pinion (not shown) secured to a driven shaft 322'.

The pantograph mechanism For the purpose of imparting to the jack 58 feeding movements of predetermined length and having a predetermined rate of speed pantograph mechanism is provided, similar to that disclosed in the prior patents hereinbefore mentioned. The feed movement of the jack is brought about in a manner similar to that disclosed in said patents by the following mechanism. The previouslymentioned feed lever 2 18 (Fig. 2) is connected at its forward end by a rod 338 (Figs. 1 and 3) to a rearwardly extending arm 332 provided on the upper end of the arm 288 of the jack. Clockwise movement of the feed lever 218 about its fulcrum (as viewed in Figs. 2 and 3) causes a movement of the jack 58 in the lengthwise direction of the shoe toward the left in Fig. 3, the jack being guided for such movement by means identical with that disclosed in the above-mentioned patents. For the purpose of imparting movement to the feed lever 2 l 8 the latter is connected substantially intermediate between its ends by a link 334 (Fig. 2) to an arm 336 fulcrumed at 331 to the rearward end of the previously-mentioned fulcrum lever 3H1 which is pivotally secured at its forward end to the machine base. Fulcrumed on the pivot pin connecting the link 334 and the arm 336 is one end of a link 338 the other end of which is connected to one arm of a bell-crank lever 340 pivotally secured to the machine frame. The other arm of the bell-crank lever 340 carries a follower roll 342 which is held against a cam 344 by the action of the weight 308 on the cable 298. The cam 344 produces the feed movement of the jack and hence may be termed a feed cam. It is mounted on a stationary shaft 346 which corresponds to the shaft 310 of the machine disclosed in Patent No. 1,854,204 hereinbefore mentioned. The feed cam is of such configuration that as it rotates, the feed lever 2l8 is moved continuously in a clockwise direction, as viewed in Figs. 2 and 3, with the result that the jack is caused to move the work continuously and at a uniform rate of speed past the lasting units.

It will be noted that by reason of the connection between the jack 58 and the feed lever 218 established by the rod 330, the initial position of the jack determined, as described, in accordance with the size of the work to be operated on causes a simultaneous initial positioning of the feed lever 2I8 such that the extent of movement of the feed lever and hence the extent of work feeding movement of the jack depends upon the size of the shoe to be operated upon.

Moreover, the illustrated machine is provided with means for determining the rate of speed of the feed movement of the jack in accordance with the size of the work to be operated upon. As illustrated particularly in Fig. 2 and as disclosed in the above-mentioned patents, the fulcrum lever 310 is connected at its rearward end to a rod 350 which is mounted for longitudinal sliding movement in a sleeve 352 pivotally secured at 354 midway between its ends to the machine frame. The sleeve carries a pair of pivoted dogs 356 arranged, when swung in one direction, to clamp the rod 350 in the sleeve 352 and When swung in the other direction, to release the rod 350 for sliding movement or adjustment along the sleeve 352. The dogs 356 are normally held in position to clamp the rod 350 to the sleeve 352 but are temporarily moved to releasing position when the jack is moved to operative position and before the power operation of the machine is started, so as to permit the relation of the rod 350 to the sleeve 352 and consequently the positions of the fulcrum lever 310 and'of the arm 336 to be varied according to the length of the shoe in the jack. This varies the leverage of the interconnecting mechanism between the feed lever 218 and the bell crank 340 and consequently varies the rate of speed of movement imparted to the feed lever 218 by the bell crank 340.

For the purpose of clamping or releasing the rod 350in the sleeve 352 the dogs 356 are connected to a bar 358 pivoted to a forwardly extending sleeve 368 in which is housed a spring 362 bearing at its forward end against an internal shoulder formed at the end of the sleeve 360 and at its rearward end against a shoulder formed on a rod 364 which passes through the spring 362 and the sleeve 360 and which is pivoted at its forward end to the right-hand end of a horizontal swinging lever 366 fulcrumed to the top of the base 58 and connected intermediate its ends by a link 368 with the left-hand end of a lever 310 also fulcrumed to the top of the base 50. While the machine is in operation the lever 316 is held latched in the position shown in Fig. 2 by a spring-pressed latch 312. When, however, the jack 58 is depressed in being moved into operative position prior to the starting of the machine, the latch is released, as in the machines of the above-mentioned patents, by a release mechanism which is actuated by mechanism for releasing a lock that serves to hold the jack in its forward work-receiving position, permitting the rod 364 to move rearwardly, thereby releasing the tension of the spring 362 and permitting rearward movement of the bar 358. This causes a release of the dogs 356 and consequently a release of the rod 358 from the .sleeve 352 and hence permits the fulcrum lever 310 and the arm 336 and the pivotal connection between the links 334 and 338 to move to the position necessary for the operation upon the particular shoe in the jack 58. This positioning of the parts is effected by the feed lever 2 I 8 through the link 334, the feed lever itself being positioned as previously described. Thereupon, that is, after the initiation of the power operation of the machine by the treadle, the dogs 356 are again operated by a pin 316 on a treadle-controlled sliding bar 314 engaging the lever 318 to clamp the rod 358 in the sleeve 352 so as to maintain the position of adjustment of the fulcrum lever 3|!) and the arm 336.

7 Limiting outward movement o jack:

The illustrated machine is provided, as the machines disclosed in the patents above mentioned, with means for limiting the forward or outward movement of the jack 58 into its Work-receiving position. To that end the spindle 284 of the jack is connected by a universal joint with a rearwardly extending rod 3811 (Figs. 1, 2 and 3) which is constructed, arranged and controlled as the corresponding rod 890 of the machine disclosed in the above-mentioned Patent No. 1,854,204.

Jack lock The mechanism for tipping the shoe 8 In the illustrated machine sliding movements of the jack carrier 281 to tip the shoe about an axis extending substantially parallel to the last bottom and transversely thereof so as to maintain the bottom of the shoe in the proper plane longitudinally thereof are produced by means of connections operating'from the pattern cam shaft 400 corresponding to the pattern cam shaft 482 of the machine disclosed in Patent No. 1,963,170, hereinbefore mentioned. These connections comprise a chain 402 (Fig. 2) extending across the front of the machine and adjustably connected to the carrier 281 of the jack. The chain .402 passes about a pulley 404 pivoted to the forward end of one arm of a bell-crank lever 406 mounted on the shaft 210. The bell-crank lever 406 is provided with a rearwardly extending arm carrying a cam roll arranged to engage one of the series of cams on the pattern cam shaft. From the pulley 404 the chain 402 extends across the front of the machine and is secured to the base 50. It will be seen that the combined rotary and bodily movement of the pulley 404 in'a counterclockwise direction, as viewed in Fig, 2, will move the carrier 281 of the jack a distance equal to twice the distance of bodily movement of the pulley 404. The jack carrier 281 is moved in the opposite direction by a chain 408 also secured to the carrier 281 which is constructed and arranged as in the machine disclosed in the above-mentioned patent No. 1,963,170. As in that machine, the chain 408 passes about a pulley (not shown) secured to the base 50 and is fastened to a horizontal spring (not shown).

The driving mechanism The power-operated parts of the machine are actuated by a driving mechanism which is similar to that fully described in the Patent No. 1,854,204 above mentioned and which includes a controlling device or stop motion for automatically stopping the machine after a feeding movement of predetermined extent has been imparted to the jack. The driving mechanism of the machine also includes means for returning the various machine parts, and in particular the jack, to their initial positions after the completion of a lasting operation. Moreover, the previously mentioned pattern cam shaft 400, which is part of the driving mechanism, is provided with a series of sets of cams as in the machines of the above-named Letters Patents to enable the machine to operate alternatively upon right and left shoes or upon shoes of difierent styles.

The operation of the machine In the operation of the machine, a last supporting an insole on its bottom and having a prewelted shoe upper assembled thereon is presented, bottom up, to the jack while the latter assumes its work-receiving forward position. The jacking of the last and shoe, which is effected automatically as in the machines of the above-mentioned Letters Patent, causes a setting of the ball-shaped gage 292 in a predetermined position in accordance with the size of the shoe to be operated upon. After the shoe has been jacked and firmly clamped in the jack, the operator depresses the jack against the pressure of the above-mentioned spring (not shown) which tends to elevate the jack. By reason of the depression of the jack the locking plate 382 is released as in the machines of the prior Letters Patents above mentioned, thereby permitting an inward or rearward movement of the jack beneath the lasting units. As soon as the jack is located beneath the lasting units, it is permitted to be raised by its spring so that the ball-shaped gage 292 may cooperate with the cam member 293 in locating the jack in its predetermined position in accordance with the size of the shoe, thereby simultaneously moving the feed lever 2I8 to its predetermined position, with the result that the pantograph mechanism is simultaneously set and the two lasting units are initially spaced in accordance with the width of the portion of the shoe where the lasting operation is about to begin. It should be mentioned that as a result of the release of the locking plate 382 the latch 312 is released so as to release the rod 350 for longitudinal sliding movement and adjustment in the sleeve 352. The work having been located in its proper working position and the machine having been set for operation on a shoe of the size and style presented to the machine, the power operation of the machine is initiated by the depression of the treadle, with the result that the pin 316 of the horizontally sliding bar 314 causes the pantograph lock to be rendered active so as to clamp the rod 350 in the sleeve 352 in its new position of adjustment.

As a result of the initiation of the power operation of the machine the disks I64 of the two lasting units are swung into their crease engaging positions in which they are retained while the shoe is continuously fed past the operating point. As described, the lasting units are yieldingly urged inwardly toward each other to tension the upper over the last and are turned about axes substantially vertical to the upper surface of the insole during the lasting operation to accommodate the varying contours of the insole.

It is to be understood that prior to the initiation of the lasting operation the marginal portion of the insole or the inner surface of the marginal portion of the upper (this being the inwardly extending flange of the welt when using the shoe upper shown in Fig. 5) or both are coated with a pressure-responsive cement such as latex so that the marginal portion of the shoe upper, after having been tensioned over the last by the progressive action of the disks I46 and while being held tensioned by the disks, is adhesively secured in lasted relation to the insole as a result of the pressure applied by the annular pressing member I54 to the overlasted marginal portion of the upper or the welt. The lasting operation is entirely automatic and is terminated automatically after a feeding movement of predetermined extent has been imparted to the jack to move the work past the lasting units, whereupon the power-operated parts of the machine, including the jack, are automatically returned to their initial positions.

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

1. A lasting machine having, in combination, means for working a shoe upper over a last simultaneously at opposite sides thereof, pressing means for adhesively securing opposite marginal portions of said upper in lasted relation to a sole member on the last, and means for moving said shoe upper and last past said upper working and pressing means.

2. A lasting machine having, in combination. means for progressively working a shoe upper over a last simultaneously at opposite sides thereof, pressing means for progressively and substantially simultaneously securing opposite marginal portions of said upperin lasted relation to said last by cement, and means for moving said shoe upper and last past said upper working and pressing means.

3. A lasting machine having, in combination, means for progressively Working a shoe'upper over a last simultaneously at opposite sides thereof between the heel breast line and the tip line of an insole supported on said last, pressing means for progressively and substantially simultaneously securing opposite marginal portions of said upper in lasted relation to said insole by cement, and means for moving said shoe upper and last past said upper working and pressing means.

4. A lasting machine having, in combination, means for progressively tensioning a shoe upper over a last having an insole thereon simultaneously at opposite sides of said last, progressively operating means for adhesively securing opposite marginal portions of said upper in lasted relation to said insole by the application of rolling pressure to said marginal portions, and means for moving said shoe upper and last past said upper working and pressing means.

5. A lasting machine having, in combination, means for progressively working a prewelted upper over a last supporting an insole, and means for progressively applying pressure along the inner edges of the welt on opposite sides of said last, thereby to cause the marginal portions of said upper to adhere to said insole.

6. A lasting machine having, in combination, means for progressively tensioning a prewelted upper over a last having an insole thereon simultaneously at opposite sides of said last, and means for progressively applying rolling pressure along the inner edges of the welt on opposite sides of said last, thereby to cause the opposite marginal portions of said upper to adhere to said insole. Y

7. A machine for side-lasting prewelted "shoes having, in combination, welt crease engaging means for progressively working said upper over a last, and means for adhesively securing 'the marginal portions of said upper, including said welt, in lasted relation to said last by the application of pressure thereto.

8. A machine for side-lasting prewelted shoes having, in combination, progressively operating means for simultaneously tensioning opposite sides of a prewelted upper over a last, and means for progressively and substantially simultaneously securing opposite marginal portions of said upper, including said welt, in lasted relation to said last by the application of pressure to said marginal portions.

9. A machine for side-lasting prewelted shoes having, in combination, progressively operating means for simultaneously tensioning opposite sides of a prewelted upper over a last having an insole thereon, the range of operation extending between the heel breast line and the tip line of said insole, and means for progressively and substantially simultaneously securing opposite marginal portions of said upper in lasted relation to said last by the application of rolling pressure to said marginal portions.

10. A lasting machine having, in combination, a work support, means for progressively tensioning opposite sides of an upper over a last having an insole thereon, means for progressively securing the opposite marginal portions of said upper in lasted relation to said insole and last by the application of pressure thereto, and automatically operating means for causing relative movement of said upper tensioning means and Work support to feed the work.

11. A lasting machine having, in combination, means for simultaneously tensioning opposite marginal portions of a shoe upper over a last having an insole thereon, means for progressively applying pressure to said marginal portions to secure them adhesively in lasted relation to said insole, and means for supporting said upper and last, the last-named means being constructed and arranged simultaneously to present successive parts of said marginal portions to said tensioning and pressure applying means.

12. A lasting machine having, in combination, means for simultaneously tensioning opposite marginal portions of a 'shoe upper over a last having an insole thereon, means for progressively applying rolling pressure to said marginal portions to secure them-adhesively in lasted relation to said insole, a support for said last and upper, and means for moving said support in the longitudinal direction of a last thereon, thereby to present successive portions of said marginal portions to said tensioning and pressure applying means.

13. A lasting machine having, in combination, means for engaging the welt crease at opposite sides of a prewelted upper supported on a last having an insole thereon, means for yieldingly moving said welt crease engaging means inwardly over said insole to tension said upper over said last, and means for progressively pressing the opposite marginal portions of said upper against said insole to cause said marginal portions to adhere to said insole in lasted relation thereto.

14. A lasting machine having, in combination, means for progressively engaging successive portions of the welt crease at opposite sides of a prewelted upper supported on a last having an insole thereon, means for yieldingly moving said welt crease engaging means inwardly over said insole to tension said upper over said last, and means for progressively pressing the opposite marginal portions of said upper against said insole to cause said marginal portions to adhere to said insole in lasted relation thereto,

15. A lasting machine having, in combination, a pair of rolls for continuously. engaging a shoe upper and for working it into lasted relation to a last, means for adhesively securing the upper in said lasted relation, and means for continuously moving said shoe upper and last past said upper working and securing means.

16. A lasting machine having, in combination, a work support, means for progressively engaging successive portions of the melt crease at opposite sides of a prewelted upper supported on a last having an insole thereon, means for yieldingly moving said welt crease engaging means inwardly over said insole to tension said upper-over said last, means for progressively pressing the opposite marginal portions of said upperagainst said insole to cause said marginal portions to adhere to said insole in lasted relation thereto, and automatically operating means for causing relative movement of said upper tensioning means and work support,

17. A lasting machine having, in combination, means for progressively engaging successive portions of the welt crease at opposite sides of a prewelted upper supported on a last having an insole thereon, means for yieldingly moving said welt crease engaging means inwardly over said insole to'tension saidupper over said last, means for progressively pressing the opposite marginal portions of said upper against said insole to cause said marginal portions to adhere to said insole in lasted relation thereto, and automatic means for moving said upper and last past said tensioning means.

18. A lasting machine having, in combination, a pair of lasting units for progressively engaging successive portions of the welt crease at opposite sides of a prewelted upper supported on a last having an insole thereon, means for yieldingly moving said lasting units toward each other to tension said upper over said last and to Work opposite marginal portions of said upper over said insole, and means for progressively pressing said marginal portions of the upper against said insole to cause said marginal portions to adhere to said insole in lasted relation thereto.

19. A lasting machine having, in combination, a pair of lasting units for progressively engaging successive portions of the welt crease at opposite sides of a prewelted upper supported on a last having an insole thereon, means for yieldingly moving said lasting units toward each other to tension said upper over said last and ,to work opposite marginal portions of said upper over said insole, and freely rotatable pressing means for progressively pressing said marginal portions of the upper against said insole .to cause said marginal portions ,to adhere to said insole .in lasted relation thereto.

20. A lasting machine having, in combination, a pair of lasting units for progressively engaging successive portions of the welt crease at opposite sides of a prewelted upper supported on a last having an insole thereon, means for yieldingly moving said lasting units toward each other to tension said upper over said lastand to work opposite marginal portions of said upper .over said insole, and rotary means including a freely rotatable annular pressing member for progressively pressing said marginal portions of the upper against said insole to cause said marginal portions to adhere to said insole in lasted relation thereto.

21. .A lasting machine having, in combination, a pair of lasting units for progressively engaging successive portions of the welt crease at opposite sides of a prewelted upper supported on .a last having an insole thereon,.means for yieldingly moving said lasting units toward each other to tension said upper over said last and to work opposite marginal portions of said upper over said insole, and rotary means including a freely rotatable annular pressing member for progressively pressin said marginal portions of the upper against said insole to cause said marginal portions to adhere to said insole in lasted relation thereto, said annular member being mounted for tilting movement transversely of the shoe for the purpose of accommodating shoe bottoms of different slants.

22. A lasting machine having, in combination, a pair of lasting units for progressively engaging successive portions of the welt crease at opposite sides of a prewelted upper supported on a last having an insole thereon, means for yieldingly moving said lasting units toward each other to tensionsaid upper over said last and to work opposite marginal portions of said upper over said insole, a rotary member for engaging the welt surface opposite to that supported by eaohlasting unit, an annulargroove of semi-circular cross section in said rotary member, and ,an annular pressing member guided for transverse tiltmg movement in said groove to engage flatly shoe bottoms of various slants and to apply pressure progressively to said marginal portions of the shoe upper to cause said marginal portions to adhere to said insole in lasted relation thereto.

23. A lasting machine having, in combination, means for tensioning a shoe upper over a last having an insole thereon, means for pressing the marginal portions of said upper against said insole to cause said marginal portions to adhere thereto, automatic work feeding means for moving said last and upper past said tensioning and pressing means, and means for determining the length of feed movement of said feeding means in accordance with the size ofthe shoe being operated upon.

24. A lasting machine having, in combination, means for progressively tensioning a shoe upper over a last having an insole thereon, means for progressively and substantially simultaneously securing opposite marginal portions of said upper in lasted relation to said insole by the application of pressure to said marginal portions, a support for said last, and means for automatically actuating said last support to move said last and shoe upper past said upper tensioning and securing means.

25. A lasting machine having, in combination, means for progressively and simultaneously tensioning opposite marginal portions of a shoe upper over a last having an insole thereon, means for progressively and substantially simultaneously securing said marginal portions in lasted relation to said insole by the application of rolling pressure to said marginal portions, automatic work feeding means for moving said last and upper past said upper tensioning and securing means, and means for determining the length of feed movement of said feeding means in accordance with the size of shoe being operated upon.

26. A lasting machine having, in combination, means for progressively and simultaneously tensioningopposite marginal portions of a shoe upper over a last having an insole thereon, means for progressively and substantially simultaneously securing said marginal portions in lasted relation to said insole 'by the application of rolling pressure to said marginal portions, automatic work-feeding means for moving said last and upper past said upper-tensioning and securing means, and means automatically adjusted prior to the initiation of the lasting operation in accordance with the size of shoe to be operated upon to determine the length of feed movement of said work-feeding means.

27. A lasting machine having, in combination, a pair of lasting units for working oppositemar- 'ginal portions of a shoe upper over a last supporting an insole, means for pressing said marginalportions to cause them to adhere to said insole, means for imparting a feed movement -to said last and shoe upper past said lasting units, and means for maintaining said units at a proper .angle to the edge of the bottom of said last.

28. A lasting machine having, in combination, 'a pair of shoe upper working and pressing units, a jack arranged to present to said units a partially completed shoe comprising an upper and an insole assembled upon a last, means for causing said units to operate progressively along opposite sides of the shoe to work the shoe upper over the last and to apply pressure to the opposite marginal portions of the upper so as to secure said portions adhesively in lasted relation to the insole, ;and ,means for making said units about axes substantially at right angles to the bottom of the last so that the relation of the upper worksaid units to operate progressively and simultaneously at opposite sides of the shoe to work the shoe upper over the last and to apply pressure to the opposite marginal portions of the upper so as to secure said portions adhesively in lasted relation to said insole, and means for rocking the jack about an axis substantially parallel to the bottom of said last and extending transversely thereof so as to present the shoe and last to said upper working and pressing instrumentalities with the portion of the insole to which the upper is about to be or is being secured always in substantially the same plane.

30. A lasting machine, having, in combination, a jack, a pair of shoe upper working and pressing units arranged to work the shoe upper over a last carried by the jack and having an insole thereon and to secure the marginal portions of the upper in lasted relation to the insole adhesively by the application of pressure to said marginal portions, means for moving the jack substantially lengthwise of the last carried thereby to cause said units to operate progressively at opposite sides of the shoe between the heel breast line and the tip line thereof, a cam and connections from the cam to the jack arranged to rock the jack so as to maintain the angular relation of the units to the surface of the insole adjacent thereto substantially constant while said units operate upon diiferent portions of the shoe.

31. A lasting machine having, in combination, a pair of shoe upper working and pressing units arranged to tension the opposite sides of a shoe upper over a last and to secure the opposite marginal portions of said upper adhesively in lasted position by the application of pressure thereto, a jack for said last, means connected to the jack for varying the initial spacing of the upper working and pressing units in accordance with the size of the shoe in the jack including a member arranged to be positioned in accordance with the size of the shoe in the jack prior to the starting of the lasting operation, connections between said member and the said upper working and pressing units arranged to position said units initially in accordance with the position of said member, and means for breaking the connections between said member and said upper working and pressing units after the latter have been initially positioned but before the starting of the lasting operation.

32. A lasting machine having, in combination, lasting means arranged to operate in succession at points upon opposite sides of a shoe and spaced lengthwise of the sole of said shoe to work the shoe upper into lasted relation to an insole and a last upon which said insole is mounted and to apply rolling pressure to opposite marginal portions of said shoe upper to secure the upper adhesively in lasted relation to the insole and last, a jack arranged to present the shoe and last to said lasting means, means to move the jack substantially in the longitudinal direction of the shoe as the lasting operation is performed, means controlled by the length of the shoe in the jack to determine the speed of the feeding movement of the jack, means constructed and arranged to position said lasting means prior to the starting of the lasting operation in accordance with the Width of the part of the shoe at which the operation is first to be performed, said positioning means including connections to said means for controlling the speed of the feeding movement of the jack, and means for rendering said connections inoperative after said lasting means have been positioned but before the starting of the lasting operation.

33. A lasting machine having, in combination, a last support, means arranged to operate progressively along opposite sides of a shoe upper to work the shoe upper over a last carried by said support, pressure applying means associated with the above-named upper operating means for causing opposite margins of said shoeupper to be secured adhesively in lasted relation to said last, and mechanism for actuating said last support to move the shoe upper and last past said upper operating and pressing means and arranged to vary the speed of the feeding movement in accordance with the size of the last carried by the support.

34. A lasting machine having, in combination, a last support, means arranged to operate progressively along opposite sides of a shoe upper to work the shoe upper over a last carried by said support, pressure-applying means associated with the above-named upper operating means for causing opposite margins of said shoe upper to be secured adhesively in lasted relation to said last, and mechanism for actuating said last support to move the shoe upper and last past said upper operating and pressing means and arranged to vary the extent and speed of the feeding movement in accordance with the size of the last carried by the support.

35. A lasting machine having, in combination, a jack for supporting a last having a shoe upper and an insole assembled thereon, a pair of supports, upper tensioning and securing units rotatably mounted on said supports and operating progressively on opposite sides of said last to work opposite marginal portions of said shoe upper into lasted relation to the insole and the last and to apply rolling pressure to said marginal portions to cause the upper to be secured adhesively in lasted position, means for actuating the jack arranged to move the jack at a uniform rate of speed past said units, and means operating in timed relation to said jack actuating means for turning said units relatively to said supports so as to maintain the relation of the units to the edge of the insole uniform as the point of operation of the units is transferred along the shoe.

36. A lasting machine having, in combination, a support for a last having a shoe upper and an insole positioned thereon, upper lasting mechanism cooperating with said support to tension the upper about the last and to secure it in lasted relation to said insole and last, means for continuously moving the support past said lasting mechanism, and means operating in timed relation to said support moving means for rendering said lasting means inoperative.

ROBERT H. LAWSON.

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