US2618793A - Lasting machine - Google Patents

Description

L. G. MILLER LASTING MACHINE Nov. 25, 1952 4 Sheets-Sheet 1 Filed Jan. 18, 1950 [nven for Lloyd G Miler Nov. 25, 1952 MILLER 2,618,793

LASTING MACHINE Filed Jan. 18, 1950 4 Shets-Sheet 2 [1212912 for Lloyd G [Ville/' .B- is Atzfmey L. G. MILLER LASTING MACHINE Nov. 25, 1952 4 Sheets-Sheet 5 Filed Jan. 18, 1950 SwN $3 Inventor Lloyd G Mailer Nov. 25, .1952 1.. G. MILLER 2,618,793

LASTING MACHINE Filed Jan. 18, 1950 4 Sheets-Sheet 4 Inventor Lloyd G Miler Patented Nov. 25, 1952 UNITED STATES PATENT OFFICE LASTING MACHINE Lloyd G. Miller, Beverly, Mass., assignor to United Shoe Machinery Corporation, Flemington, N. J a corporation of New Jersey Application January 18, 1950, Serial No. 139,298

16 Claims.

lasted position by means of an adhesive. It will J be understood, however, that the invention in its broader aspects is not limited to use in machines for lasting with an adhesive or in a lasting machine of the exact mechanical construction herein illustrated.

It is an object of this invention to provide a novel and improved machine for lasting shoes progressively, that is of relatively simple con-.- struction yet easy to operate and effective in use. To this end, the herein illustrated machine has novel tensioning means comprising a power-operated reciprocating jaw, for engaging one side of the stock to be lasted, and a second yieldably mounted jaw for engaging the other side of the lasting margin and cooperating with the first jaw to seize, tension, and release portions of the lasting margin of the stock, successively, in different locations along themarginal edge of the bottom of a shoe, as the shoe is moved'past these jaws. More particularly, and in accordance with a feature of the invention, power-operated means are also provided for imparting movements to the second jaw in directions extending toward and away from and laterally of the firstjaw; inpredetermined time relation to the reciprocations of the first jaw so that these jaws "will cooperatein a more effective manner to seize, tension andrelease the different portions of the lasting'margin of the'stock.

With the viewer simplifying the construction, and also to improve the wiping action, 'thefirstmentioned-jaw and a wiper are carried by a reciprocating slidewhich is urged yieldingly in a direction to hold the wiper down on the lasting margin during movement of the slide in one direction, toward the shoe, and means are provided for raising the slide to elevate the wiper above the-bottom of the shoe when the slide is moved in the opposite direction, away'from the shoe. More particularly, the first-mentioned jaw is yieldingly urged in a direction to clamp the lastin margin against the second yieldably mounted jaw during a portion of the movement of the slide in a direction. toward the shoe, and

cam means are providedfor moving the first.

jaw away from clamping :position during a sub.-

sequent portion of its movement in thisidirection. lihe movements of the second jaw, in Idirections toward and away from and laterally of the first jaw occur inpredejtermined time .rela-- tion to the. reciprocations of the slide andalso to the movementsof the first jaw toward and:

away from clamping position. Hence, these jaws not only cooperate. to seize, tension and:

release portions of the lasting margin, successively, in different locations alongthegmarginaledge of the bottom of the shoe,,as theshoe is moved past the jaws, but also the wiper lays the lasting margin of the tensioned, stock in,- wardly over, and presses it against, the bottom of the shoe in each location all as a, continuous and progressive operation. Although the, shoe being lasted may be moved along by the operator, preferably a mechanical feed is provided. In the herein illustrated machine, the mechanical feed is effected by an edge guide roll which is driven at a low speed so-asto feed the shoe slowly past the jaws and the wiper.

When lasting with an adhesive, applied to the,

inside surface of the lasting margin of the stock and/or to the marginal portion of the'shoe bottom, it is imperative that the lasting margin-of the tensioned stock be pressed very firmly against the bottomof the shoe. Ifthe lasting operation proceeds continuously along the marginal edge of the bottom of the shoe, the pressing action of a wiper is necessarily of somewhat limited duration and hence alonemay not be sufficient to effect a secure bonding of the lasted margin of the stock to the shoe bottom. Also, after a shoe has been lasted, and before a soleattaching adhesive can be applied thereto, the.

exposed surface of the lasting margin of the stock must be abraded, or otherwise roughened. Accordingly, means are provided for applying additional pressure to the overlaid lasting margin, to augment its adherence to the bottom of the shoe, and this means is also utilized for abrading the exposedsurface of the lasting margin so as to prepare it for the reception of. soleattaching adhesive. Thus, the herein illustrated machine has a rotary roughing brush arranged to engage the exposed surface of the lasting mar.- gin immediately after the lasting margin. has been laid inwardly over, and pressed against, the bottom of the shoe by the wiper.

These and other objects and features. of the invention will appear in the following detailed description of the preferred embodiment thereof illustrated in the accompanying drawing and will be pointed out in the claims.

Fig. 1 is a view in side elevation of a lasting machine embodying the features of this invention;

Fig. 2 is a view in front elevation of the machine shown in Fig. 1;

Fig. 3 is a plan view of the machine with certain parts in section;

Fig. 4 is a plan view of a portion of the machine with certain parts in section substantially on line IV-IV of Fig. 1; and

Figs. 5 through 8 are views of the operating elements of the machine which, together with Fig. 1, illustrate the difierent positions assumed by these elements during an operating cycle.

Referring to the drawings, and particularly Figs. 1 and 5-8 thereof, the machine therein illustrated is provided with a gripper comprising jaws I0 and I2 for tensioning the stock being lasted and for drawing its lasting margin in over the bottom of the shoe, a reciprocating wiper I4 for wiping the lasting margin of the tensioned stock inwardly from the edge of the shoe bottom and for pressing it against the shoe bottom, and a rotary brush it for abrading and roughing the exposed surface of the lasting margin after it has been tensioned and secured to the bottom of the shoe and for applying additional pressure to the lasting margin. During the operation of the machine the shoe is held in the hands of an operator and positioned, relatively to the aforementioned operating elements, by engagement with an edge guide roll I8 and a guard member 20 that also serves as a bottom rest. A deflecting finger 22 is also provided for holding the lasting margin of the stock in a position to be'engaged by the gripper jaws I0, I2.

The gripper jaw I 0 is formed on the lower end of an arm 24 which is adjustably secured to a bar 26 by means of a screw 28 and the bar 26 is,- in turn, adjustably secured, by a screw 30, to-an arm 32 that is formed integrally with an elongated hub portion 34, Fig. 1. This hub portion is splined to a sleeve 36 that is rotatably mounted on a stud shaft 38 which is secured to an upstanding portion 40 of a frame 42, Fig. 2. Formed integrally with the sleeve 36 is a rearwardly extending arm 44 carrying a cam roll 46 that is adapted to contact a cam track 48 formed on a cam 50. The cam 50 is secured to a vertical shaft 52 that is journaled in horizontally extending portions 54, 56 of the frame portion 40, Figs. 1 and 2. The hub 34 is provided with two spaced ears 58, 60, Fig. 3, between which islocated the rounded end 62 of a lever 64. This lever is pivotally mounted on a stud 66, carried by a bracket member 68 that is formed integrally with the frame portion 40, and at its other end carries a cam roll ID. This cam roll is arranged to engage an eccentric I2, secured to the shaft 52 and having a portion thereof enclosed by an arcuate rib I4, Figs. 1 and 3. The arm 24 is formed with an ear T6 and stretched between a pin I8 in this ear and a pin 80, carried by the bracket 68, is a tension spring 82.

With the arrangement already described, the jaw Ill may be swung outwardly and upwardly, about the axis of the stud shaft 38 and against the resistance of the spring 82, either by the action of the cam 50 or by the other jaw I2 and in a manner to be explained. Also, the jaw I0 may, at a predetermined time in the operating cycle, be moved transversely of the jaw i2 and in a direction lengthwise of the shoe by the action 4 of the eccentric I2 and a coil spring 84 that is stretched between an eye 86, on the lever 64, and an eye 88 on the frame portion 40, Fig. 3, as will be apparent from the drawings. Thus the jaw I0 may cooperate with the jaw I2 for intermittently seizing, tensioning and releasing different portions of the lasting margin of the stock, successively, along the margin of the bottom of a shoe.

The jaw I2 is pivotally mounted on the wiper I4 by means of a stud 90 and is provided with a cam roll 92 and a spring abutment 94, Figs. 5, 6 and 7. A compression spring 93 is interposed between the abutment 94 and an adjusting screw 98, threaded through a bracket 109 that is associated with the wiper I4. When the wiper is reciprocated, in a manner to be described below, the cam roll 92, at times, comes into contact with a cam plate I02 that is secured to a curved arm I04 mounted on a post I65 by means of a screw I 81. This post extends upwardly from the frame member 54, see Figs. 1 and 2. When the cam roll 92 engages the cam plate I02, the jaw I2 will be rotated about the axis of the stud 90 in a clockwise direction as illustrated in Figs. 5 and 6 for a purpose that will presently appear.

The wiper I4 is mounted on one end of a slide H9 that is mounted for reciprocation in slidecarrying bracket H2. This bracket has an upstanding arm II 4 and is pivotally mounted on a pin H5 that is carried by a boss H6 formed on the frame member 54, Fig. l. The slide H0 has two cars H8, which are provided with slots H9 to receive the ends of the pin H5, and carries a stud (20 on which is mounted a spherically shaped cam roll I22. This roll is held against a cam I24, secured to the shaft 52, by means of a pair of coil springs I26, I26 which are stretched between the ends of the pin I I5 and the ends of a second pin I26 that passes through the slide I I0. The cam I24 is so shaped that for every revolution of the shaft 52 the slide H0, and the jaw I2 and wiper I4 carried thereby, are reciprocated by being moved to the left, as viewed in Figs. 1, 3-7, by this cam and then returned by means of the springs I26, I265. The wiper l4 operates during the movement of the slide I ID to the left to wipe the lasting margin of the stock inwardly over and to press it against, the bottom of the shoe. On the return movement of the slide to the right, the slide is elevated to lift the wiper up away from the bottom of the shoe to prevent unlasting of the stock in the following manner.

Also pivoted on the boss I I 6 by means of a pin I30, carried by the boss H6, is a yoke member I32 having a pair of arms I34, I36, Fig. 4. At their outer ends, these arms carry a pair of rolls I38, I40 which bear against and support the lefthand end of the slide I I0 and the slide-carrying bracket I I2. The arm I36 also carries a cam roll I42 that engages a cam track I44 formed in a cam I 46 that is secured to the shaft 52, Fig. 1. The cam track I44 is so shaped and angularly disposed with respect to the cam I 24 that just as the slide H0 is about to be returned by the springs I26, I26, it is elevated by the cam I24 so as to hold the wiper up away from the bottom of the shoe. However, before the slide H0 is again moved to the left by the cam I24, it is lowered so as to bring the wiper I4 into operative position by the action of a coil spring I50. This spring is stretched between the upstanding arm H4, on the slide-carrying bracket H2, and an ear I52 that is formed on the frame portion 56.

The slide H is .cut away at I54, Fig. 4,-so as to slide over a square bushing I56 through which the shaft 52 extends.

The shaft 52 is driven in the direction of the arrow, Fig. 3, in the following manner. A main power shaft I66, which is journaled in a bushing I62, pressed into the frame portion 46, and by a bearing. post I63, is provided with a belt pulley I64 to which power may besupplied from a motor, not shown, by means of a belt I66. The shaft I60 also carries a second belt pulley I68, which, as will be explained below, drives the rotary brush I6, and a bevel gear I10. This bevel gear drives the shaft 52 through bevel gears I12, I14, I16, I18 and I60 and shafts I82, I64, as will be clear from Fig. 1. The bevel gear I60 is secured to the shaft 52 which also carries a spur gear I86. The edge guide roll I8, which is rotatably mounted on the frame member 54, is driven by the spur gear I66 through spur gears I88, I96, I92, I84 and I96 and shafts I96 and 260, as will be clear from Figs. 1. 2 and 3.

The rotary brush I6 is carried by a shaft 226 which is mounted in ball bearings 222, 224, fitted in a boss 226 that is formed on one end of an arm 228, Fig. 3. This arm is pivotally mounted, at its other end, on an enlarged portion 230 of the bushing I62. The shaft 226 carries a pulley 232which is driven from the pulley I68 by means of a belt 234. Threaded into a boss 236, formed on the arm 228, is a clamping bolt 238 which passes through an arcuate slot 240 which is concentric with the axis of the bushing I62, cut through the frame member 40 and an interior boss 242 thereon. When the clamping bolt 236 is loosened, the arm 228 may be swung about the axis of the bushing I62, and also of the pulley I68, for the purpose of adjusting the vertical position of the rotary brush I6 without, however, effecting the tension of the belt 234.

The guard member 20 is arcuate in shape, Figs. -7, and is formed integrally with a block 256, Fig. 1. This block is adjustably secured to the end of a laterally extending boss 252, Fig. 3, formed in the arm 228, by means of a clamping bolt 254, which passes through a slot 256 in the block 256, Fig. 1. The deflecting finger 22, which is formed in the shape of a hook, is secured to the upper side of the arm I04 by means of a screw 258, Fig. 4.

The construction of the several operating elements having been described, the operation of the machine will now be explained with particular reference to Figs. 1 and 5 to 8 of the drawings. In these figures the machine is shown as lasting the platform cover C of a so-called platform, or slip-lasted, shoe comprising an upper U assembled on a last L, together with a platform P and a sock lining S. It will be understood, however, that the herein illustrated machine is not only capable of but is intended for use in the lasting of the uppers of conventional shoes in the same manner as it operates on the cover 0. With the machine running, the shoe to be lasted is presented to the machine by an operator who inserts the lasting margin of the cover C behind the finger 22, in a position to be engaged by the gripper jaws II] and I2, and holds the shoe with the bottom of the platform P up against the rotary brush I6 and guard member 20 and with the edge of the platform P and a portion of the cover C bearing against the edge uide roll I8.

As the slide I I6, carrying the wiper I4 and the gripper jaw I2, is rapidly reciprocated, the following actions occur. First, the lasting margin of the cover C is clamped firmly between the jaws I0, I2, Fig. 1, and the jaw I0 is swung about the axis of the stud 38 and against the resistance of spring 82 by the continued movement of the jaw I2. This movement of the jaws III, I2 tensions the cover and draws its lasting margin inwardly over the bottom of the platform P, the parts soon reaching the positions shown in Fig. 5. Just as the wiper I4 comes into engagement with the lastin margin of the cover C and begins its wiping action, the jaws I0 and I2 are separated by the actions of the cam 50 and cam block I62, so that when the slide III) completes its movement to the left the parts reach the positions shown in Fig. 6 with the lasting margin of the cover C wipedin over, and pressed against, the bottom of the platform P by the wiper I4. It will be understood that the inside surface-of the-lasting margin of the cover C and/or the marginal edge of the bottom of the platform-P will havepreviously been coated with a suitable adhesive so that the lasting margin is securely fastened to the platform in lasted position by the pressing action of the wiper I4. The. slide H2 and wiper I4 are now elevated as shown in Fig. '7, against the action of spring I56 by the cam I44 and returned to theirstarting position by the springs I26 as permitted by cam I24. While the slide H6 and wiper I4 are thus being returned, the jaw I2 is lowered by the sprin 96 to the position shown in Fig. 1. At the same time, the jaw it is likewisereturned to its original position.

However, in thus returning, the jaw I6 is also shifted in directions extending laterally of the jaw I2 and lengthwise of the shoe, by the eccentric I2 and spring 84, in time relation to its movement toward the jaw I2 and laterally of the shoe which is effected by the spring 82 when permitted by cam 56. These several movements are so timed that, the jaw I6 is first moved in a direction lengthwise of the shoe and laterally away from the jaw I2 by the eccentric I2, then swung about the axis of the stud 38, by spring 62 as permitted by cam 50, in a direction toward the edge of the bottom of the shoe and toward the jaw l2, and finally the jaw It is returned to its original position in line with the jaw I2 by movement lengthwise oi the shoe which is effected by the action of the spring 84 and the enclosed portion I4 on the eccentric I2. Thus the jaw I6 is inserted beneath the cover C in a location where its lasting margin is somewhatelevated above the bottom of the shoe and is then moved yieldingly in a direction lengthwise 0f the shoe beneath the lasting margin to a position in line with the jaw I2, see solid and dotted line showing of the jaw ID in Fig. 8. This arrangement assures that the jaw It will certainly slide under the lasting margin into a position to cooperate with the jaw I2 in seizing and tensioning the cover 0.

As will be apparent from Fig. 4, the wiper I4 operates directly in line with the jaw I2. Hence the shoe must be fed along between each reciprocation of the slide I I6 so as to present an unlasted and unwiped portion of the lasting margin of the cover C to the action of the jaws I6, I2 and the wiper I4. While the operator could, if desired, effect such movement of the shoe manually, a much more even feeding of the shoe, and consequently a more uniform lasting action, may be obtained if the shoe is fed mechanically. In the herein illustrated machine, this mechanical feeding is obtained by means of the edge guide 7, roll l8. This guide roll is preferably provided with a soft rubber facing 280 for better frictional engagement with the edge of the platform P and interposed portion of the cover 0, see Figs. to 8. The guide roll I8 is rotated from the main power shaft I60 in the manner explained above and at a low speed. I-Ien-ce, as this roll rotates in the direction of the arrow, Fig. 8, the shoe will be fed along at a uniform and relatively slow speed so that different portions of the lasting margin of the cover C are successively presented to the actions of the jaws I0, I 2 and wiper I 4. Thus the lasting operation will proceed, continuously, along the periphery of the bottom of the shoe as long as the operator holds the edge of the shoe against the guide roll l8. When the lasting operation is completed, the operator merely moves the shoe away from the guide roll 18 and downwardly out of the machine.

As the lasting operation proceeds, the lasting margin of the cover C, after it has been wiped in over and pressed against the bottom of the platform by the wiper i4, is acted on by the rotary brush 16. This brush not only abrades, or roughs, the exposed surface of the lasting margin of the cover C, but also exerts considerable pressure thereon. This additional pressure augments the adhesive bond between the lasting margin and the platform and in this manner improves the lasting action of the machine as a whole. Moreover, the shoe is already prepared, as a result of the roughing action of the brush it, for the application of a sole-attaching adhesive. In order to avoid premature adherence of the lasting margin of the-cover C to the shoe bottom at the beginning of the lasting operation, the operator may first hold the shoe in a position with its bottom inclined away from the rotary brush l6 and then swing the shoe up into operating position, after it has been fed along far enough to bring a tensioned and overwiped portion of the lasting margin into the zone of action of the brush. By adjusting the position of the guard member 20, relatively to the brush it, by means of clamping bolt 254, the intensity of the abrading action of the brush it may be varied at will. Also, by adjusting the arm 228 the heightwise position of the brush it and hence of the guard member 20, which also serves as a bottom rest in the manner illustrated in Fig. 7, may be varied to change the position of the work in a heightwise direction relatively to the gripper jaws l 8, l2 and the wiper Hi. If desired, and as shown inthe herein illustrative machine, the operating surface of the guard member 20 may be provided with a series of teeth 3053, Figs. 5 to '7, which will bite into the wiped over lasting margin of the cover and thus facilitate the holding of the shoe in operating position against the pulling action of the jaws I0, l2.

Having thus described the invention, what is claimed as new and desired to secure by Letters Patent of the United States is:

1. A lasting machine having tensioning means comprising a power-operated reciprocating gripper jaw for engaging one side of the lasting margin of the stock to be lasted, a second gripper jaw for engaging the other side of said lasting margin, and power-operated means for imparting movements to the second jaw in directions extending toward and away from and laterally of the first jaw in predetermined time relation to the reciprocating movements of said first jaw, to cause said jaws to seize, tension and release different portions of the lasting margin, successively in different locations, along the marginal edge of the bottom of a shoe as said shoe is moved past said jaws.

2. A lasting machine having tensioning means comprising a power-operated reciprocating gripper jaw for engaging one side of the lasting margin of the stock to be lasted, a second yieldably mounted gripper jaw for engaging the other side of said lasting margin, and power-operated means for imparting movements to the second jaw in directions extending toward and away from and laterally of the first jaw, in predetermined time relation to the reciprocating movements of said first jaw, to cause said jaws to seize, tension and release different portions of the lasting margin, successively, in different locations along the marginal edge of the bottom of a shoe as said shoe is moved past said jaws.

3. A lasting machine having tensioning means comprising a power-operated reciprocating slide carrying a gripper jaw for engaging one sideof the lasting margin of the stock to be lasted, a second gripper jaw for engaging the other side of said lasting margin, and power-operated means for imparting movements to the second jaw in directions extending toward and awayfrom and laterally of the first jaw, in predetermined time relation to the reciprocating movements of said slide, to cause said jaws to seize, tension and release difierent portions of the lasting margin, successively, in different locations along the marginal edge of the bottom of a shoe as said shoe is moved past said jaws.

4. A lasting machine having tensioning means comprising a power-operated reciprocating slide carrying a gripper jaw for engaging one side of the lasting margin of the stock to be lasted, a second yieldably mounted gripper jaw for engaging the other side of said lasting margin, and power-operated means for imparting movements to the second jaw in directions extending toward and away from and laterally of the first jaw, in predetermined time relation to the reciprocating movements of said slide, to cause said jaws to seize, tension and release different portions of the lasting margin, successively, in different locations, along the marginal edge of the bottom of a shoe as said shoe is moved past said jaws.

5. A lasting machine having a power-operated reciprocating slide carrying a wiper and a gripper jaw for engaging one side of the lasting margin of the stock to be lasted, a second gripper jaw for engaging the other side of said lasting margin, and power-operated means for imparting movements to the second jaw in directions extending toward and away from and laterally of the first jaw, in predetermined time relation to the reciprocating movements of said slide, to cause said jaws to seize, tension and release different portions of the lasting margin, successively, in different locations along the marginal edge of the bottom of a shoe and said wiper to lay the lasting margin of the tensioned stock inwardly over, and to press said lasting margin against, the bottom of the shoe in each location as said shoe is moved past the jaws and the wiper.

6. A lasting machine having a power-operated reciprocating slide carrying a wiper and a gripper jaw for engaging one side of the lasting margin of the stock to be lasted, a second yieldably mounted gripper jaw for engaging the other side of said lasting margin, and power-operated means for imparting movements to the second jaw toward and away from and laterally of the first jaw, in predetermined time relation to the reciprocating movements of said slide, to cause said jaws to seize, tension and release different portions of the lasting margin, successively, in different locations along the marginal edge of the bottom of a shoe and said wiper to lay the lasting margin of the tensioned stock inwardly over, and to press said lasting margin against, the bottom of the shoe in each location as said shoe is moved past the jaws and the wiper.

7. A lasting machine having a power-operated reciprocating slide carrying a gripper jaw for engaging one side of the lasting margin of the stock to be lasted, a second gripper jaw for engaging the other side of said lasting margin, said first jaw being yieldingly held in a position to clamp the lasting margin against the second jaw during a portion of the movement of the slide in one direction, means for moving the first jaw away from clamping position during a subsequent portion of its movement in said direction, and power-operated means for moving said second jaw in directions extending toward and away from the first jaw, in predetermined time relation to the reciprocating movements of said slide and to the movements of said first jaw, to cause said jaws to seize, tension and release different portions of the lasting margin, successively, in difierent locations along the marginal edge ofv the bottom of a shoe as the shoe is moved past the jaws.

8'. A lasting machine having a power-operated reciprocating slide carrying a gripper jaw for engaging one side of the lasting margin of the stock to be lasted, a second gripper jaw for engaging the other side of said lasting margin, said first jaw being yieldingly held in a position to clamp the lasting margin against the second jaw during a portion of the movement of the slide in one direction, means for moving the first jaw away from clamping position during a subsequent portion of its movement in said direction, and power-operated means for moving said second jaw in directions extending toward and away from and laterally of the first jaw, in predetermined time relation to the reciprocating movements of said slide and to the movements of said first jaw, to cause said jaws to seize, tension and release different portions of the lasting margin, successively, in different locations along the marginal edge of the bottom of a shoe as the shoe is moved past the jaws.

9. A lasting machine having a power-operated reciprocating slide carrying a gripper jaw for engaging one side of the lasting margin of the stock to be lasted, a second yieldably mounted gripper jaw for engaging the other side of said lasting margin, said first jaw being yieldingly held in a position to clamp the lasting margin against the second jaw during a portion of the movement of the slide in one direction, means for moving the first jaw away from clamping position during a subsequent portion of its movement in said direction, and power-operated means for moving said second jaw in directions extending toward and away from the first jaw, in predetermined time relation to the reciprocating movements of said slide and to the movements of said first jaw, to cause said jaws to seize, tension and release difierent portions of the lasting margin, successively, in different locations along the marginal edge of the bottom of a shoe as the shoe is moved past the jaws.

10. A lasting machine having a power-operated reciprocating slide carrying a gripper jaw for engaging one side of the lasting margin of the stock to be lasted, a second yieldably mounted gripper jaw, for engaging the other side of said lasting margin, said first jaw being yieldingly held in a position to clamp the lasting margin against the second jaw during a portion of the movement of the slide in one direction, means for moving the first jaw away from clamping position during aisubsequent portion of its movement in said direction, and power-operated means for moving said second jaw in directions extending toward and away from and laterally of the first jaw, in predetermined time relation to the reciprocating movements of said slide and to the movements of said first jaw to cause said jaws to seize, tension and release diiierent portions of the lasting margin, successively, in different locations along the marginal edge of the bottom of a shoe as the shoe is moved past the jaws.

11-. A lasting machine having a power-operated reciprocating slide carrying a wiper and a gripper jaw for engaging one side of the lasting margin of the stock to be lasted, a second gripper jaw for engaging the other side of said lasting margin, said first jaw being yieldingly urged to a position to clamp the lasting margin againstthe second jaw during aportion oi the movement of the slide in one direction, meansior moving the first jaw away from clamping position during a subsequent portion of its movement in said direction, and power-operated means for moving said second jaw in directions extending toward and away from the first jaw, in predetermined time relation to the reciprocating movements of said slide and to the movements of said first jaw, to cause said jaws to seize, tension and release different portions of the lasting margin, successively, in different locations along the margin of the bottom of the shoe and said wiper to lay the lasting margin of the tensioned stock inwardly over, and to press said lasting margin against, the bottom of the shoe in each location as the shoe is moved past the jaws and the wiper.

12. A lasting machine having apower-operated slide carrying a wiper and a gripper jaw for engaging one side of the lasting margin of the stock to'b'e lasted, a secondgripper' jaw for engaging the other side of said lastingmarg-in, said first jaw being yieldingly urged to a position to clamp the lasting margin against the second jaw during a portion of the movement of the slide in one direction, means for moving the first jaw away from clamping position during a subsequent portion of its movement in said direction, and power-operated means for moving said second jaw in directions extending toward and away from and laterally of the first jaw, in predetermined time relation to the reciprocating movements of said slide and to the movements of said first jaw to cause said jaws to seize, tension and release different portions of the lasting margin, successively, in different locations along the margin of the bottom of the shoe and said wiper to lay the lasting margin of the tensioned stock inwardly over, and to press said lasting margin against, the bottom of the shoe in each location as the shoe is moved past the jaws and the wiper.

13. A lasting machine having a power-operated reciprocating slide carrying a wiper and a gripper jaw for engaging one side of the lasting margin of the stock to be lasted, a second yieldably mounted gripper jaw for engaging the other side of said lasting margin, said first jaw being yieldingly urged to a position to clamp the lasting margin against the second jaw during a portion of the movement of the slide in one direction, means for moving the first jaw away from clamping position during a subsequent portion of its movement in said di rection, and power-operated means for moving said second jaw in directions extending toward and away from the first jaw, in predetermined time relation to the reciprocating movements of said slide and to the movements of said first jaw, to cause said jaws to seize, tension and release different portions of the lasting margin, successively, in different locations along the margin of the bottom of a shoe and said wiper to lay the lasting margin of the tensioned stock inwardly over, and to press said lasting margin against, the bottom of the shoe in each location as the shoe is moved past the jaws and the wiper.

14. A lasting machine having a power-operated reciprocating slide carrying a wiper and a gripper jaw for engaging one side of the lasting margin of the stock to be lasted, a second yieldably mounted gripper jaw for engaging the other side of said lasting margin, said first jaw being yieldingly urged to a position to clamp the lasting margin against the second jaw during a portion of the movement of the slide in one direction, means for moving the first jaw away from clamping position during a subsequent portion of its movement in said direction, and power-operated means for moving said second jaw in directions extending toward and away from and laterally of the first jaw, in predetermined time relation to the reciprocating movements of said slide and to the movements of said first jaw, to cause said jaws to seize, tension and release different portions of the lasting margin, successively, in difierent locations along the margin of the bottom of the shoe and said wiper to lay the lasting margin of the tensioned stock inwardly over, and to press said lasting margin against, the bottom of the shoe in each location as the shoe is moved past the jaws and the wiper.

15. A lasting machine having a power-operated reciprocating slide carrying a gripper jaw, a, second gripper jaw for cooperating with the first-mentioned jaw to seize, tension and release different portions of the lasting margin of the stock to be lasted, successively, in different locations along the marginal edge of the bottom of a shoe as the shoe is moved past the jaws, a wiper carried by the slide and arranged to lay the lasting margin of the stock inwardly over, and to press said lasting margin against, the bottom of the shoe in each location when the slide is moved in one direction, spring means for urging the slide in a direction to hold the wiper yieldingly down on the lasting margin during movement of the slide in said direction, and means for raising the slide to elevate the wiper above the shoe bottom when the slide is moved in the opposite direction.

16. A lasting machine having a power-operated reciprocating slide carrying a gripper jaw, a second gripper jaw for cooperating with the first-mentioned jaw to seize, tension and release different portions of the lasting margin of the stock to be lasted, successively, in different locations along the marginal edge of the bottom of a shoe as the shoe is moved past the jaws, a wiper carried by the slide and arranged to lay the lasting margin of the stock inwardly over, and to press said lasting margin against, the bottom of the shoe in each location when the slide is moved in one direction, spring means for urging the slide in a direction to hold the wiper yieldingly down on the lasting margin during movement of the slide in said direction, and cam-operated means for raising the slide to elevate the wiper above the shoe bottom when the slide is moved in the opposite direction.

LLOYD G. MILLER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,288,440 Pym Dec. 1'7, 1918 1,472,823 Ashton Nov. 6, 1923 1,815,295 Goddu July 21, 1931 2,318,083 Lane et al. May 4, 1943 2,437,753 Oliver Mar. 16, 1948 2,445,845 Baker July 27, 1948

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