US1358149A - Machine for working uppers over lasts - Google Patents

Description

1. H. HAMlLTON. MACHINE FOR WORKING UPPERS OVER LASTS.

APPLICATION FILED JULYS, 1916- 1,358,149. Patented Nov. 9, 1920.

2 SHEETSSHEET Fig.1.

m/i/vm/a I. H. HAMILTON.

MACHINE FOR WORKING UPPERS OVER LASTS.

APPLICATION FILED IULY3I I916.

Patented Nov. 9, 1920.

2 SHEETS-,SHEET 2.

WI/E/v 747%.

UNITED srnrss rarsnr OFFICE.

JGHN I-l". HAMILTON, 0F BROCKTON, MASSACIEQUSETTS, essrsnon,

'BY MESNE ASSIGN- MEN'IS, TO UNITED SEGE MACHINERY CORIDRATION, O l PATTERSON, NEW JER- SEY, A CORPORATION OF NEW' JERSEY.

MACHINE 338R "WORKING UPPERS OVER LASTS.

1 Q58 149 Specification of Letters Patenti I Patented N 9, 192() Applicatienhled July 3, 1916. Serial No. 107,365. r

To aZZw/wm twitc concern:

it known that 1, JOHN H. .l'lAMlL'lON, a citizen oithe United States, residing at lirockton, in the county of Plymouth. and State of Massachusetts, have invented certain Improvements in .lklachines for Workin Upper-s Uver Lasts, of which the following description, in connection with the accompanying drawings, is a specification. like reference characters on the drawings indicating like parts in the several figures. This invention relates to machines for working uppers over lasts and is shown by way oi illustration embodied in a lasting machine of the hand method type, such, for example, as that shown in United States Letters Patent No. 597,321, p'ranted January 11, 1898, on application or Sherman WV. Ladd, and especially to such machines when adapted for lasting the sides of welt shoes. it is to be understood, however, that the invention is not limited in its application to machines of the above-mentioned type. in lasting; welt shoes, except at the heel seat where they are completely driven, the tacks are left upstanding to facilitate pulling them out after they have served their purpose, and frequently the tacks are driven in a direction inclined downwardly and inwardly toward the middle line of the 7 last. In lasting the shanks of shoes on lasts which are deeply undercut at the shank, as are most modern lasts, particularly in womens shoes, to provide a narrow shank, it is necessary to tilt the. shoe so that the normal inclination of the tack relatively to the shoe bottom is increased to such an extent that ireouently the upper slips upwardly toward the head of the tack and therefore becomes slack. To overcome this diiiiculty it has been proposed. as in United States Letters Patent No. 1,109,700, granted September S, 1914:, on application of Thomas N. OBrien, to bend the tack inwardly by means projecting; from the wiper which works the upper over the last bottom and adapted to contact with and bend inwardly a previously driven tack when the wiper moves over the shoe bottom to drive the following tack.

In the operation of'the machine of this prior patent it is necessary for the operator to hold the shoe against the th ust'of the advancing wiper to. insure bending of be pushed toward him and the previously driven tack. before the following tack is driven. If the operator neglects to. hold the shoe firmly it is apt to away from the machine with the result that the following tack is improperly located with respect to the edge ofthe shoe bottom.

An object of this invention is to provide an improved tack, bending" mechanism and one which will bend a'tack in the same cycle of the ma'chinein which the tack is driven, the tack driving andtack bending opera tionsbein completed in one cycle and indepe'ndently'of the preceding or following cycles of the machine.

A feature of the invention consists in means which acts upon the tack immediately after it is driven to bend the tack. As shown herein, a tack bender is provided which ene'ae'es the tack after the driver has inserted it inthe shoe and last and which is actuated to bend the tack during the cycle oi the machine in which the tack is driven. l e

AS herein shown, the tack be der is iann'ed for movement substan iallv parallel to the surface of the work and he ta k driver is arranged to inse t a sack in the path of the tack bender; This construction insures the proper" relativeulocation of the tack bender and the driven tack for the proper operation of the bender regardless of the 'sp'acirm of successive'tacks'aud con stitutes another important feature of'the invention.

In the construction herein shown" byway of example; the tack bender is moun ed in the tack block for movement relatively thereto and mechanism operated by withdrawal of the tack driver actstomove the bender acre-inst the tack and bend it inwa dly of the shoe. i

' Preferably the connection between the driver bar and tack benderis effective during; withdrawal or upward'movement oi the driver bane-1nd the bender is restored to normal position icy-"the rearward or return movement of the wiper. The efiectof bend ing the tack inwardly of the shoe is to bring the upper part of the tack into a position more nearly perpendicular to the'shoe bottom. thereby increasing the holding power of the tack by causing the upper to slip downthe stem of the tack towardthe sale my invention;

Fig. 2 is an enlarged side view of the mechanism embodying my invention and showing. the position of the parts after descent of the driver;

F ig. 3 is a plan view, partly in section,

of the-tack block of the machine provided with my tack bending device; 7

Figs. 4 and 5 show, in perspective, views of the thumb spring with the tack bending device in its retracted and advanced positions respectively; and

7 Figs. 6 and 7 show the driven tack re- 7 spectively before and after the tack is bent.

The machine to which the present invention is shown as applied is fully described in the Patent No. 597,321 above referred to and in United States etters Patent No. 584,744, granted June 15, 1897, on application ofLadd & McFeely, to which patents reference maybe hadfor explanation of parts not hereinreferred to.

The machine comprises (Fig. 1) a shoev rest 2 against which the shoe bottom is held at a considerable angle to the horizontal, particularly while the sides are being lasted, and has a gripper 4 which acts to seize andtension the upper and to carry it over the shoe-bottom. A tack block 6 then advances to wipe the upper'over the edge :of the'shoebottom, being mounted on a slide 8 which is reciprocated horizontally by connections to a cam '10. During 1ts advancing movement the sllde 8 engages the carrler 12 n of the driver bar 14 and moves it forward in position to insert into the shoe the tack held by the tack block.

-As shown in Fig. 2, the tack block 6 is secured to the slide 8 by screws 22. On

' the under side of the block 6 a thumb spring piece 24, Fig. 4 which is secured to the slide 8 by the same screws 22 as the tack block. The tack block 6 is provided with the usual tackfingers 26, Fig. 3,'to hold the tack in the tack block until it is driven by a driver 28, springs 30 being provided to hold the tack fingers 26yieldingly pressed toward each other to hold thetack.

A tack bender 40, Fig; 4, is mounted in a groove in "the thumb" spring 24 for move ment in a substantially horizontal direction in line with thetack which is driven in front of it in a notch 42 in the thumb spring. The tack bender is preferably provided with a notch 44 in its end to prevent movement of the tack laterally of the bender during its tack bending movement; The

bender 40 is provided with an offset portion 46'having an ear 48 to which mechanism for operating it is connected.

This mechanism comprises an angle lever '(Fig. 2) pivoted to the slide 8 at 50 and having an arm 52 pivotally connected to the ear 48. Another arm 54 of the lever extends toward the driver bar and carries mechanism by which the arm 54 is uplifted during upward movement of the driver bar but is unaffected by downward movement of the bar.

As shown, the arm 54 is bored longitudinally, and in the bore is mounted a stem 56 for longitudinal movement therein, being prevented from rotation by a pin 58 fixed in the stem 56 and extending through a slot 60in the arm 54. The stem is held with the pin 58 at the forward end of the slot 60 by a spring 62 arranged between the angle lever and the stem 56. A dog 64 is mounted on the forward end of the stem 56 by a screw 66 and interengaging teeth may be formed on the dog 64 and stem 56 to pr e vent relative movement of these parts and to permit adjustment of the dog about the screw 66 when the screw is loosened. The dog 64 has a lower face 68 which, when the slide 8 is in advanced position, as shown in Fig. 2, is in line with a face 70 on the driver bar so that when the driver bar is raised after its tack inserting movement these faces 68, 70 will engage and the angle lever will be moved about its pivot 50 and the tack bender 40 will be reciprocated forwardly to engage and bend inwardly of the shoe the tack just driven by the driver.

When the slide 8 is retracted after the tack is driven and bent, an inclined face 74 on a rearward projection 76 of the angle lever will engage a corresponding face 78 onthe machine frame, and the angle lever will be moved back to its normal position. Upon the next forward reciprocation of the slide 8, which occurs before the descent of the driver bar 14, the dog 64 will engage a flat face 80 on the driver bar and will stop, continued movement of the slide compressing the spring 62. When the driver descends, the compressed spring 62 will force the dog '64 forwardly to bring its face 68 into line with the face 70 of the driverbar, as shown in Fig. 2, which faces will engage and effect forward movement of the bender 40 when the driver bar israised after its tack driving movement. In its forward reciprocation the bender 40 passes between the tack fingers 26 and separates them against, the pressure of the leaf springs 30, sufficient friction being thereby produced to prevent anymovementof the bender and the angle lever not -produced by the operating mechaclaim as new anddesire to secure by'United States Letters Patent:

1. In a lasting machine, the combination with means for wiping successive portions or the upper into lasted position step by step, and means for driving tacks to secure the upper arranged to leave the tacks upstanding above the surface of the work, of

'means operating independently of the wiping means to bend each tack inwardly of the-shoe after it is driven.

2. In a lasting machine, the combination with means for wiping successiveportions of the upper into lasted position, and means for driving tacks to secure the upper arranged to leave the tacks upstanding above the surface of the work, of means operated by movement oi? the driving means after its driving movement for bending inwardly of the shoe the upstanding portions of the tacks.

3. In a machine for lasting portions of a shoe upper successively, along the periphery of the shoe in repeatedcycles, means for partially inserting a tackin each successive cycle, and means acting in the same cycle of the machine in which the tack is driven to bend the tack inwardly of the shoe.

I. In a machine of the class described, the combination of means for working successive portions of a shoe upper over the shoe bottom, a driver, a driver bar for partially inserting tacks to hold the upper in lasted position, a tack bender for bending inwardly of the shoe the upstanding portions of the tacks, and operative connections between the driver bar and the bender to operate the bender.

5. A machine of the class described having, in combination, a reciprocating wiper constructed and arranged to wipe the upper over the last bottom, tacking mechanism constructed and arranged partially to insert a tack to secure the upper while the upper is held over the last bottom, and additional means acting after the tack is driven and before the wiper is withdrawn to bend the driven tack in a direction to increase its holding effect upon the upper.

6. A machine of the class described having, in combination, means for working an driver for inserting tacks into the work to hold the upper and to leave thehead end portion of each tack upstanding-above the shoe bottoni, means operated by withdrawal of the tackdriver to bend-the driven tack inwardly of the shoe, and means operated by retraction otthe wiper for restoring the bending means to normal position.

8. In a machine of the class described, a tack driver, a wiper, a. bender mounted in the wiperfor movementtoward and from a tack driven by the driver, and operating means for the bender becoming efi'ectiv'e when the driver is withdrawn for moving the bender againstthe driven tack to bend it inwardly of the shoe.

9. In a machine ofthe class described, a tack driver, a wiper, a tack bender movable relatively to the wiper, meansfor operating the bender by movement of the driver in one direction, and separate means for moving the bender in the other direction.

10. In a machine ofthe class described, a tack block, a driver, means for advancing and retracting the tack block over the work, a tack bender movable relatively to the tack blocktobendinwardly of the shoe the tack driven by the driver, means operated by the driver to give the tack bender an operative movement, and means operated by the retraction of the wiper to give the tack bender an inoperative return movement.

11. A machine of the class described having, in combination, a movable tack block, a driver, and mechanism constructed and arranged to be operated by movement of the tack block and driver and acting to produce in the tack a bend which is initiated at a point distant from the lower end of the tack.

12. A machine of the class described having, in combination, a driver, a movable tack block, mechanism for operating the driver and tack block, a tack bender, and means operated from said mechanism for moving the bender in a direction to bend the stem of the tack inwardly after the point of the tack has entered the work and for restoring the bender to initial position after its tack bending movement.

13. In a machine of the class described, the combination of a tack bender movable in a path substantially parallel with the surface of the work, and a tack driver arranged to insert a tack in the path of the bender.

14:. In a machine of the class described,

'the combination of a tack driver, a wiper movable over the shoe bottom, a tack bender movable with the wiper and in the path of a tack, driven, in the same cycle, and means ing, in combination, a tack flock carrier movable inwardly of the shoe,'a tack block mounted on the carrier provided with a passage for the driver, a driver bar movable atan oblique angle .to the direction of movement of the tack block, a driver on the bar acting partially to insert a tack through the tack block at an oblique angle to the face of the work, and means operated after each tack insertion to bend the upstanding portion of that tack into a position substantially perpendicular to the face of the work. 7 c

17. In a machine of the class described, a wiper carrier, a wiper, tack fingers mounted in the wiper, means for normally hold ing the fingerstoward each other to retain the tack, a driver, a driver bar which is advanced by the wiper carrier into position for its driver partially to insert a tack held by the tack fingers, a tack bender con- 'structed and arranged to pass between the gers when said connections are inoperative, and means for restoring the bender to normal position after its tack bending move- Vment i 18. niachine or" the class described havmg, m combination, a C0mb111QltZtClZl3lOGk and p driver b r having a driver for ope 'ating the tack block, a reciprocating tack bender mounted in the wiper, an angle lever having one arm connected with the bender, a'dog mounted on the other arm of the lever and arranged in the path of the driver bar whereby movement of the driver bar will actuate the angle lever and tack bender, and means permitting adjustment of the dog on the angle lever arm for timing the movement of the bender relatively to the movement of the driver bar.

19. In a lasting machine, the combination with means for wiping successive portions of the upper into lasted position, and means for driving tacks to secure the upper arranged-to leave the tacks upstanding above the surface of the work, of additional means operated by movement of the driving means for bending inwardly oi the shoe the upstanding portions'of the tacks.

In testimony whereof I have signed my namerto this specification. JOHN H. HAMILTON.

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