US1723342A - Shank-lasting machine - Google Patents

Description

Aug. 6, 1929. M. E. FERNALD 1,723,342

SHANK LASTING MACHINE Filed Dec. 1,922 a Sheets-Sheet 1 Aug. 6, 1929. M. E. FERNALD SHARK LASTING MACHINE Filed Dec. 8, 1922 (3 Sheets-Sheet 2 Aug. 6, 1929. M. E. FERNALD SHANK LAS'IING MAGHPE Filed Dec 8, 1922 a Sheets-Sheet 3 Patented Aug. 6, 1929.

UNITED STA MARK E. FERNALD, OF SOUTHBORQ, MASSACHUSETTS, ASSIGNOR TO C. C. BLAKE, IN- CORPORATED, OF BOSTON, MASSACHUSETTS, A CORPORATION OF NEW YORK.

SHANK-LASTING MACHINE.

Application filed December The present invention relates to lasting machines which are used in the manufacture of shoes, and more particularly to shank lasting machines used to last the shanks of Blake welt shoes.

In practicing the method of lasting dip closed in the Blake Patent'No. 1261,7 11, April 2, 1918, it was first proposed to updraw the upper around the forepart of the shoe and then bind the updrawn upper to the edge face of the insole with a binder of flexible material the free ends of which extended loosely along the shank of the shoe. Thereafter these loose ends of the, binder were employed as wipers for wiping the loose upper at the shank of the shoe into lasted position against the edge face of the insole. Many ditliculties arose in the use'of a flexible binder and this method of lasting the forepart was improved by substituting a formed binder for the flexible hinder as disclosed in the application of Charles C. Blake, Serial No. 465,131, April 28,1921, reference to which is made by permission. This formed binder terminates at the juncture of the shank and ball and so it becomes necessary to devise another method of lasting the shanks of Blake welt shoes as there are now no loose ends of the binder available for use as wipers. n

The object of the present invention is to produce a machine for lasting the shanks of Blake welt shoes in which the foreparts are bound against the edge face of the insole by a formed binder. I

To the accomplishment of this object and such others as may hereafter appear the features of the invention relate to certain,

devices, combinations, and arrangements of parts hereinafter described and then set forth broadly and in'detail in the appended claims which possess advantages which will be apparent to those skilled in the art.

The various features of the present invention will be readily understood from an inspcction of the accompanying drawings 8, 1 22. Serial No. 605,615.

in section, showing the engagement by the grippers of the loose upper at the'shank of the shoe;

Fig. at is a detail in left side elevation, partly in section, of the gripper gage in place upon the shank portion of theinsole;

Fig. 5 is a detail in front elevation, partly in section, showing the mechanism for operating the grippers to stretch the upper and place the stretched upper in lasted position against the edge face of the insole;

Fig. 6 is a detail in front elevation, partly in section, of the mechanism for operating the gripper gage to locate it upon the shank portion of the insole;

Fig. 7 a detail in front elevation, partly in section, showing the final position of the grippers with the upper located in lasted poslition against the edge face of the insole; 2111C I Fig. 8' a detail of one of the gripper aws.

In practicing the method of lasting disclosed in the Blake Patent No. 1,261,711, hereinbefore referred to, work comes to the present'machine directly from the machine disciosed in the patent to Blake No. 1,386,681, Aug. 9, 1921. The work as it comes to the present machine has anupper 1 (Fig. 1), an insole 2, both assembled on a last The upper at the heel part is lasted over upon the heel seat. In addition,

the forepart of the upper is bound in lasted position against the edge face of the insole by a formed binder 4 which is secured to the forepart of the shoe by a clamp 5. The work is placed upon a heel. pin 6 which enters the socket usually formed in the cone of the last. The pin 6 is formed upon the upper end of a post 7 which is carried by a bracket 8 secured to the top of ,a column 9. After positioning the work on the/ pin 6 the operative spreads cement upon the edge face of the insole around the shank and fora-apart. This cement secures the upper in final lasted position to the edge face of the insole. f

Thereafter the operative interposes the loose upper at the shank between a pair of gripper jaws 10 (Figs. and 7 Each jaw is secured to the lower end of a post 11 which isarranged to slide upon a support 12 between stop pins 18. The posts 11 slide upon the support 12 when arranged substanoperation.

tially normal to the bar and are cramped upon the bar when they are tipped upon the bar. Each jaw is formed of a curved piece of spring metal which is shaped to fit the curvature of the edge face of the insole at the shank of the shoe (Fig. 2).

The support 12 is provided with a central hole 14: (Figs. 3 and 7 which fits over a pin 15 mounted in a carrier 16 (Fig. The top of the carrier 16 is provided with a trunnion 17 which is held in place on a second carrier 18 by a screw 19 the construction being such as to allow the carrier 16 to turn freely on an axis substantially normal to the shank of the exposed face of the insole.

The carrier 18 is mounted to freely tip and slide upon a rod 20 extending over the shank of the shoe. The rod 20 is secured by a nut 21 to a bushing 22 which is mounted to turn about a vertical axis in the front end of an arm 23. The rear end of the arm 23 is forked (Fig. 2) and pivoted on a horizontal pin 24 (Fig. 1) carried by the bracket 8.

In order to gage the position of the aws 10 so that they will always operate in the plane of the last bottom at the line of operation the bottom of the carrier 16 is provided with a second trunnion 25 upon which a gage 26 (Fig. 1) is mounted. This gage is shaped like a tiny flat iron and is designed to engage the exposed face of the insole at the shank thereof and locate the jaws 1O properly relatively to the edge face of the insole. 'The exposed face of the insole at this point is inclined and the gage 26 is designed to accommodate itself to this inclination and tip the carrier 18 on the rod 20 to adapt the jaws 10 to the inclination at the edge face of the insole at the line of The movement of the gage 26 on the trunnion 25 is limited to a movement longitudinally of the last by a. spring finger 27 which extends from the back of the gage through a tube 28 carried by the bushing 22. The tube is held in position on the bushing by a threaded rod 29 centrally threaded through the bushing. The finger 27 is provided with a. stop 30 which, through engagement with the rear of the tube 28, limits the sliding movement of the carrier 18 on the rod 20.

With this construction the gage 26 can be adjusted to rights or lefts of any size or style of last. The gage may be moved longitudinally of the last through the sliding connection of the carrier 18 with the rod 20. The gage may also be moved laterally of the last through the pivotal connection of the bushing 22 with the arm 23. The gage also tips longitudinally of the last to adapt itself to the spring of the last through the connection between the gage and the trunnion 25. In addition to sharing all these movements of the gage the support 12 carrying the jaws 10 may also move, through the trunnions 17 and 25, about an axis normal to the last.

' In order to locate the gage 26 in position upon the exposed face of the insole at the shank thereof the arm 23 carries a loop 31 (Fig. 1.) The free ends of the loop extend above the arm 23 and each carries a coiled spring 32interposed between a plate 33 and the top of the arm 23. To adjust the tension with a lug 38 engaged by a notch 39 formed in an arm 40 pivoted on a horizontal rod 11 carried by the plate 37. Normally the arm 40 is held elevated with the hook 36 tipped out of the path of movement of the loop 31 by a spring 42 which is coiled around the hub of a bell crank lever a3 (Fig. 6) pivoted on the rod 41. One end of the spring 42 is engaged beneath a pin 4A on the arm 40. The other end of the spring is engaged in an opening 45 formed in the hub.

In order to engage the hook 36 with the loop 31 and thus lower the arm to locate the gage 26 on the insole the machine is provided with a treadle 16 (Fig. 1) the rear end of which is secured to a rock shaft a? journaled on a bracket 48 secured to the column 9. The treadle 46 carries a hori zontal rod 49 to the opposite ends of which a link 50 is connected. The rear ends of the links 50 are pivot-ed upon the shaft 17 The right hand link 50 is connected by a vertical rod 51 (Fig. 5) to one end of the bell crank lever 43. The left hand link 50 is connected by a rod 52 to a bell crank lever 53 pivoted on a rod 5% carried by the plate 37. The pivot pin between the rod 51 and bell crank lever 43 is provided with a depending finger 55 which when the treadle 16 is depressed engages a hook 56 formed on the lower end of the arm 40. \Vhen the arm 40 is depressed through the connections described a segment 57 pivoted on the plate 37' and normally engaged with the arm 10 drops downwardly under the influence of gravity. During the first part of this move-- ment the segment strikes the back of the hook 36 and inserts it into the loop 31. Continued depression of the arm 40 pulls the arm 23 downward and locates the gage 26 on the exposed face of the insole. The segment 57 continues to drop under the influence of gravity until the operative releases the treadle with the gage 26 positioned upon the insole whereupon the segment 57 looks the arm 10 in its depressed position (Fig. 6). lVhen the treadle 46 is released it is elevated into an inoperative position by a coiled spring 58 one end of which is connected to the bracket 8 and the other end of which is connected to the'treadle 46.

During the downward movement of the gage 26 the operative holds the support 12 in place upon the carrier 16. lVhen the gage 26 meets the sole and adapts itself to the inclination thereof the upper surface of the gage engages a clamp 75 pivoted on the support '16 and tips it into the position of Fig. 4 where it clamps the bar 12 firmly on the support 16.

The operative new positions a pair of arms 59 against the posts 11 beneath the bar 12, one on each side of the shoe. Each of the arms 59 is pivoted at the rear of the machine upon a vertical pin (Fig. 2) which is carried by a sleeve 61 (Fig. 1) rotatably mounted on the pin 24. Each of the arms 59 is normally held in an inoperative position by a coiled spring 62 one end of which is connected to the bracket 8 and the other end of which is connected to an arm 63 depending from the sleeve (ll. The arms 59 are drawn down from their normal inoperative position and positioned against the postsll by the operative.

Cooperating with each of the jaws 10 is a second gripper jaw 64- which is loosely carried by a wire bracket 65 secured to the forward end of the arms 59. Each of the gripper jaws 64 is forked to straddle the post 11 and support 12. The narrow slot shown in Fig. 8 fits over the support 12 while the under slot fits over the post 11. The upper is gripped between the jaw 10 and the tines 65 of the jaw (34. The gripper jaws l0 and ($4 carry the upper from the position of Fig. 3 to the position of Fig. 7 in a straight line movement thus stretching the upper and locating the stretched upper in lasted position against the edge face of the insole.

In order to actuate the grippers to stretch the upper and locate the stretched upper against the edge face of the insole the arms 59 are embraced by the verticalarms of the bell crank levers 43 and 53 respectively (Fig. which are operated through the connections previously described by a second depression of the treadle all During the first movement of the arms 59 inwardly the wire bracket (3.3 pushes against the upper part of the gripper jaw G l causing its shoulders (36 to engage the back of the post 11 (Figs. and 7) and turn thereon thus closing the tines of the gripper jaw firmly upon the upper. Further movementof the arms 59 inwardly causes the gripper jaws 1 0 and G4 to move along a plane toward the work to stretch the upper and bring the stretched upper into lasted position against the edge face of the insole. If one jaw 10 reaches the insole first the work turns automatically upon the heel pin 6 to position the work so that both pairs of grippers may liningthe stretched upper into the shank. lVhen inward movement of the jaws 10 is limited by the insole the posts 11 tip upon the bar and thus become cramped upon the bar.

To release the work so that it may be withdrawn from the machine the operative engages a tail 67 (Fig, 6) on the segment 57 and swings the segment into engagement with a pin 68 ontheplate 37. This movement unlocks the arm and releases it to the influence of the spring 4L2 which elevates the arm and tips the hook 36 out of engage ment with the'loop 31. The arm 23 is thus released to the influence a spring 69 (Fig. 2) one end of which is secured to a post 70 on the arm and the other end of which is secured to a post 71 on a plate 72 on the bracket 8. The arms 59 are also withdrawn from beneath the support 12 and these arms then move upwardly under the influence of the springs 62. As the arms return to an. inoperative position a corner 73 (Fig. 2) formed on the back of each of the arms so strikes the plate 72 and turns the arms aboutthe pins (30 until an edge 74L on the arms rests against the plate '(2. This construction insures the return of the arms 55) to a uniform inoperative position. As the arms 59 return to their inoperative position the gripper jaws 64; are withdrawn from the work. As they withdraw the gripper jaws (3'1: are maintained in place on the top of the wire bracket by uprights 76 thereon (Fig. l)

The lasted shoe, together with the jaws 10 and support 12, may now be removed from the machine. As soon the the cement is dry the forepart hinder, the jaws l0 and the clamps are removed whereupon the lasted shoe is ready for the welt sewing operation. After the welt sewing operation the entire skirt of the upper standing above the exposed face of the insole is trimmed in readis for the application of the outsole.

While the primary object of the present invention is directed to a narrow field in the art of lasting shoes, it is not to be understood as limiting the scope of the claims, where the context otherwise permits, to a shank lastin machine, as it will be apparent to those skilled in the art that certain fea tures and combination of parts hereinbefore described are well adapted for general use in the lasting of shoes.

It will also be clear to those skilled in this class of machines and with the general objects of the present invention in view that changes may be made in the details of struc-. ture, the described and illustrated embodiment thereof being intended as an exploitation of its underlying essentials, the features whereof are definitely stated in the claims herewith.

What is claimed as new, is

l. 4- lasting machine, having, in combination, a gripper having jaws for nippinn' the upper hetwceu them, and means for operating the gripper to stretch the upper and locate the stretched upper in final lasted posit-ion against the edge face of the insole at the shank thereof.

2. A lasting machine, having, in combination, a gripper having jaws tor nipping the upper between them, means for operating the gripper to stretch the upper and locate the stretched upper in final lasted position against the edge face or" the insole, and means for fastening a part of the gzippe to the shoe to bind the lasted upper against the edge face of the insole.

8. A lasting machine, having, in comhination, grippers each having jaws for nipping the upper between them arranged on opposite sides of the shank of tre shoe, and means for operating the grippers to stretch the upper and locate the stretched upper in iinal lasted position against the edge face of the insole at the shank thereof.

A lasting machine, having, in combination, means for supporting shoe for "tree pivotal movement about an axis intcrsect g the shoe bottom, and means, including grippers each having jaws for nipping the upper between them, for simultaneously lastin both sides of the shank.

o. A lasting machine, having, in comhination, lasting means, and mechanism tor operating said means along and positively holding it in a single plane parallel to the exposed "face of the insole atthe line 01"? operation to last the upper.

G. A lasting machine, having, in combination. lasting means, and mechanism ipr operating said means along and posi 'ely holding it in the plane of the last is ttom at the line of operation to last the upper.

7. A lasting machine, raving, in combination, grippers, means for imparting a complete stretching movement along single plane to the grippers, and means i varying the inclination of said. grippers accordance with variations in the inclination of the edge faces of the insoles operated upon.

8. A lasting machine, having, in comlomation, grippers, means for in'iparting a complete stretching movement along a single plane to the grippers, and means for varying the height of said grippers in accord ance with variations in the height of work operated upon.

9. A lasting machine, having, in comh1nation, grippers, means for imparting a complete stretching movement along asmgle plane to the grippers, means for varying the ,r in

of tor lasting tie insole the f flllli of the shoe, and

311 W said suimort lon 'itudimeans for ad ustin or the shoe.

i .astme; machine, ha

. i hination, a supp ,rt extendine 'ing, in comtransversely at the shank of the shoe, and

in comisversclj ting deed to hiuation. a of the shoe and provided with la vices, a carrier therefor, a gage moi t engage the work, and means operated by the :t'or clamping the support on the carrier.

lasting machine, having, in comhination, grippers each provided with jaws Ior ni ping the upper between them mounton )osite sides of the shank, and a re means for operating the grippers first no upper, then to stretch the upper stretched upper against the 1e insole only.

'. A lasting machine, having, in comsupport extending transversely provider, with a pair of nongripper jaws slidahl v mount-e. pair of arms embracing the 7 r jaws, and a pair of gripper jaws cooaerating with the other par of gripper aws respectively.

16. A lasting machine, raving, in combination, a gripper having jaws for nipping the upper hetween them, means for operatgripper to stretch the upper and locate the s retched upper against the edge face of the insole. and 31162 for securing the upper in final lasted posh-ion to the edge are of the insole.

17. A lasting machine, having, in comhinati n, grippers each having jaws for nipping the upper between them mounted upon the L o posite sides of the shoe means for o) i A a l crating the grippers to stretch the upper and locate the stretched upper against the iii edge face of the insole, and means for securing the upper in final lasted position to the edge face of the insole. I

18. A shoe machine, having, in combination, a gage, means having normally a broken connection with the gage for drawing the gage down upon the exposed face of the sole, and mechanism for making the connection and operating said means.

19, A shoe machine, having, in combination, a gage, means having normally a broken connection with the gage for drawing the gage down upon the exposed face ot the sole, mechanism for making the connection and operating said means and locking said gage in position on the sole.

20. A lasting machine, having, in combination, a support, a gripper jaw loosely mounted thereon, a second support, a second. gripper jaw carried thereby, and means for relatively moving the supports to operate the gripper jaws to grasp an upper. I

21. A lasting machine, having, in combination, a support, a post carried thereby, a gripper jaw mounted on the post, a second support, a gripper jaw carried thereby and constructed to straddle both the first named support and the post, and means for relatively moving the supports to operate the gripper jaws to grasp an upper and move the post relatively to the first support to bring the upper into the shank of the shoe.

22. A lasting machine, having, in combination, a support extending transversely of the shoe, a pair of posts thereon mounted to embrace the shoe, a pair of arms mounted to embrace the posts, a gripper jaw mounted on each post, a gripper aw mounted on each arm, and means for operating the arms to close the gripper aws of each pair upon the upper and move the posts on the first named support to stretch the upper and bring it into lasted position against the edge face of the insole.

23. A lasting machine, having, in combination, a support, a post carried thereby, a gripper jaw mounted on the post, a second support, and a gripper jaw carried thereby having a pair of tines to engage the upper at separated points and straddle the first support and post.

24-. A lasting machine, having, in combination, a support, a post carried thereby, and. a gripper jaw having a narrow slot to straddle the support and a Wider slot to straddle the post. v

25. A lasting machine, having, in combination, a support, a post carried thereby, and a gripper jaw having a narrow slot to straddie the support and a wider slot to straddle the post, said slots being separated by shoulders which fulcrum on the back of the post.

26. A lastin machine, having, in combination, a support extending transversely of the shoe and n'ovidcd with lasting devices directly engaging the upper for lasting the opposite sides oi the shank of the shoe, a

carrier for the support, and means for slid- .ing the lasting devices along the support.

27. A lasting machine, having, in combi nation, a support extending transversely of the shoe and provided with lasting devices for lasting the opposite sides of the shank of the shoe, means for sliding the lasting devices along the support, and means-tor tipping the support to adapt the lasting devices thereon to the spring of the last.

28. A shoe machine, having, in combination, a gage, a pivoted arm therefor, means for normally holding the arm elevated, and

means for drawing the gage .down upon the work comprising a second pivoted arm, a hook pivotally and slidably mounted on the arm, a loop on the first arm, and a segment mounted to insert the hook in the loop and lock the second arm in a depressed position when the gage is positioned on the work.

29. A lasting machine, having, in combination, a gripper, means for operating the gripper to grasp an upper, means for con straining the gripper to move along a plane to stretch the upper and locate the stretched upper against the edge face of the insole, and means for securing the upper in final lasted position to the edge face of the insole.

In testimony whereof I have signed my name to this specification.

MARK E. FERNALD.

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