US2167738A - Lasting machine - Google Patents

Description

Aug. 1, 1939. J. w. BARNA LASTING MACHINE Filed April 25, 1938 4 Shets-Sheet 1 Aug. 1, 1939.

J. w. BARNA LASTING MACHINE Filed April 25, 1938 4 Sheets-Sheet 2 Aug. 1, 1939. Y J. w. BARNA 2,167,733

LASTING MACHINE Filed April 25, 1938 4 Sheets-Sheet 3 1939. .n. w. BARNA LASTING MACHINE Filed April 25, 1938 Aug. 1

4 Sheets-Sheet 4 Patented Aug. 1, 1939 AT ,i"

T OWE LASTING MACHINE Joseph W. Barna, Chicago, IlL, assignor of fortynine per cent to Carl A. Laystrom, Chicago,

Ill.

Application April 25, 1938, Serial No. 204,074

19 Claims.

My invention relates to machines for lasting pro-welt uppers, and its primary objects are to provide improved wiper-assembly constructed and arranged to underlie the welt throughout its entire extent and draw or stretch the side, heel and toe portions of the upper upon the body of the last and lay its welted-edge upon the sole of the last, and improved means for moving the wipers in both directions between their lasting position and their spread position which enlarges the space between them for conveniently positioning the work in the machine. Other objects of the invention will be apparent from the disclosure.

A practical embodiment of means for carrying out the invention is shown in the accompanying drawings, in which Fig. 1 is a top plan View of a lasting machine constructed in accordance with my invention with its parts in their relative positions when the wipers are spread to permit a last with an upper in preliminary position thereon to be positioned on the wipers; Fig. 2 is a similar view showing the parts in their positions when the wipers are closed inwardly to lasting position; Fig. 3 is a longitudinal vetical sectional view on the line 33 of Fig. 1; Fig. 4 is a transverse vertical sectional View on the line 4-4 in Fig. 1; Fig. 5 is a detail view partly in section showing the supporting parts for the end-wipers; Fig. 6 is a detail view showing a modification in the side-wiper units; and Fig. 7 is a detail View.

The wiper-assembly is organized to engage the upper all around the last and is of the type disclosed in my co-pending application for patent filed September 6, 1935, Serial Number 39,393, as it comprises sectional end-wipers movable lengthwise and widthwise of a shoe in the machine, and side-wipers movable widthwise of the shoe with their ends overlying the end-wipers. However, the present wiper-assembly differs from that of my said application in that while the side-wipers in the latter are carried and operated by the endwipers, the present side-wipers are not only independently carried and operated, but also have associated means to move the endwipers inwardly to their closed position to stretch the upper on the last and lay its welted-edge down upon the sole of the last.

Referring to the drawings, a pair of toe-wipers I0 and II mounted on a toe-head l2 and a pair of heel-wipers l3 and i4 mounted on a heel-head [5 have movement lengthwise and widthwise of the medial line of the machine, these heads being movably carried in undercut grooves H6 in a supporting frame formed by an opposite pair of spaced longitudinal bars ll, which are carried at their ends on upright cross-pieces it mounted on suitable bases i9 resting on and bolted to a workbench as shown in Fig. 4, certain of these parts at the rear end of the machine being shown 5 as broken away in Figs. 1, 2 and 3. Each end-wiper is carried on the outer end of a swinging arm 2t which is pivoted at its inner end on the round portion of a machine-bolt 2! whose threaded end is seated in the associated 10 head. The overlapping portions of the arms for each pair of end-wipers are reduced in thickness to bring the wipers into approximately the same horizontal plane, and their inner ends are rounded as at 22 to allow free swinging movement. 15 The end-wipers are mounted on their carrying arms by means permitting their heightwise adjustment to bring them into alinement with the profiles of the soles of different lasts, and also permitting them to be tilted to conform to the lon- 2Q gitudinal contours of different lasts. Each arm 25 carries an upwardly extending base formed by an angle-bracket 23 secured to it by screws 24 and having an elongated slot 25 in its upwardly projecting portion. Each bracket 23 car- 25 ries an upwardly projecting wiper-post 26 having an out-wardly and angularly directed horizontal seat 27 to which the associated wiper is bolted as at 28. Each post 26 carries a set-screw 29 Whose shank passes through the slot 25 in the associated 3Q bracket 23, so that by loosening the screw the wiper-post can be adjusted heightwise and held in place by setting the screw down. Each post 26 can be tilted axially on its screw 29 at any heightwise position to tilt the wiper; to lock 35 the post in different tilted positions it is provided at its lower end with an opposite pair of ears 3!) which loosely straddle the bracket 23 and carry opposite adjusting screws 3i arranged in the line of the bracket. By adjusting the screws 3| the 40 posts can be swung and held in different positions for different tilts of the wipers.

The end-wipers are moved inwardly and outwardly by a right and left threaded screw-shaft 32 which is rotatably mounted in a central bear- 4s ing 33 carried on the side-bars ii and has threaded engagement with brackets 34 fixed to the opposite heads l2 and P5. The shaft carries at the front end of the machine an operating handle 35; by turning the handle clockwise the shaft is rotated to draw the heads l2 and I5 inwardly toward each other to move the heel and toe wipers lengthwise of a shoe in the machine, and by turning the handle counter-clockwise the shaft is rotated to move the heads out- 56 wardly away from each other to move the heel and toe-wipers away from the shoe. The two heel-wipers and the two toe-wipers are normally stressed to their open or spread positions shown in Fig. 1, preferably by equalized spring-pressure. Each head l2 and I5 carries an outwardly projecting skeleton-frame composed of an inner cross-piece 36 fastened to the head, side-pieces 31 and an outer cross-piece 38 having a vertical upward flange 39 which is provided with an elongated horizontal slot 40. An inwardly directed bearing-plate 4| is mounted on each flange 39 by a threaded stem 42 which passes freely through the slot 4|] and is held in position by opposite set-nuts 43. A bell-crank lever consisting of a long arm 44 and a short arm 45 is pivoted as at 46 on each plate 4|; the lever at the toe-end of the wiper-assembly is connected to the toe-wiper carriers 20, and the lever at the heelend of the assembly is connected to the heelwiper carriers 20; the long arm 44 of each lever is connected by a pivoted link 41 to one of its associated carriers, and the short arm 45 thereof is connected to the other associated carrier by a lever 48 pivoted to the arm as at 49 and bolted to the carrier as at 50. Each flange 39 carries a laterally projecting arm 5| to which one end of a coil-spring 52 is attached, the other ends of the springs being fixed respectively to one of the carriers 20 of the heel and toe wipers as at 53, the pull of the springs being suilicient to spread the wipers of each pair of end-wipers to their open positions. By manipulating the set-nuts 43 the bearing-plates 4| can be adjusted sidewise in their slots 40 and then looked in position to turn the carriers 20 on their pivots 2| to conform the end-wipers to the swing or pitch of the selected last, and the springs 52 and their equalizing connections preserve the wipers in their positions conforming to the last. The lengthwise adjustment of the heads l2 and I5 by the shaft 32 sets the wiper-carriers 20 for different lengths of lasts. Each of the heel and toe-wipers is provided on its outer edge near its free end with an outwardly extending curved face or edge 54 which is engaged by a co-operating. member on the associated side-wiper unit to move the heel and toe-wipers on the same side of the machine inwardly widthwise of a shoe in the machine and put the corresponding spring 52 under tension, as fully hereinafter described.

The side-wipers 55 are of sufficient length to have their ends overlie the inner ends of their associated heel and toe-wipers in all positions of the latter, and their lasting movement is widthwise only of a shoe in the machine, each then moving towards and away from the shoe in a right line. Each side-wiper 55 is supported independently of. the end-wipers, and is fixed by a headed screw 56 to an upright post 51 which is heightwise adjustable in a base 58 by a headed set-screw 59 whose inner end engages an elongated flat face 60 on the post to hold the latter from turning; by loosening the screw the post can be raised or lowered as may be necessary to adjust its wiper to different lasts and locked in the desired position by setting the screw down to cause its head to bind the post on its base. Each base 58 is carried in a head 6| having an undercut groove 62 extending in the lengthwise direction, of the machine and in. which the base is adjustably mounted for movement in the same direction when it, is desired to adjust the sidewipers. lengthwise of the machine as for different lengths of the shank portions ofjshoes, they then being held in position by set-screws 63 to fit all sizes of the selected style of last. The heads 6| are moved towards and away from each other in a transverse guideway 64 mounted on the sidebars intermediate the heel and toe heads by a right and left threaded screw-shaft 65 which is rotatably mounted in a central bearing 66 adjustably mounted on the guideway 64 as shown at 66 in Fig. 4 to set the side-wipers to a selected style of last to correspond to the wiping edges of the heel and toe-wipers when set for that last. The shaft 65 has threaded engagement with the opposite heads 6|, and has a handle 51; when the handle is turned clockwise the shaft 65 moves the heads inwardly towards each other to move the side-wipers widthwise of a shoe in the machine, and when the handle is turned contra-clockwise the shaft moves the heads outwardly away from each other. Each side-wiper unit carries a suitable elongated member to engage the curved faces 54 of its associated heel and toe-wipers as the side-wiper moves inwardly. This member preferably is in the form of an elongated skirt 68 carried on each side-wiper, but it may be of any construction and arrangement suitable to carry out its function of moving the associated end-wipers inwardly against the force of their retracting springs 52. In Fig. 6 for example it is in the form of a. lateral plate 68 attached to the post of the side-wiper.

In using the machine the end-wipers are set for a right or left last and to the swing of the selected last by shifting their control-plates 4| and locking them in position, and the side-wipers are set correspondingly by shifting the bearing 66 and locking it as shown at 66. The endwipers are set for the length of the selected last by their shaft 32, and they are set for the width of the last by the screws 24 in the slots 23 in their bases 23 as shown for example in Fig. '7; the side-wipers are set for the width of the last by their shaft 65, and all the wipers are adjusted heightwise to fit the last. As the end-wiper posts 26 are set at an angle to the longitudinal axis of the machine, when they are tilted on their screws 29 their wipers are tilted lengthwise and sidewise so that the toe-wipers correspond to the longitudinal curvature of the foot portion of. the sole of the last and the heel-wipers correspond to the heel-seat of the last.

In operating the machine the wipers are spread to their open position as in Fig. I, and a last of selected style having an upper loosely arranged thereon, preferably in the manner and by the means shown in my United States Patent No. 2,100,794 dated November 30, 1937, is mounted in inverted position in the machine with the welt supporting the Work on the wipers in position for the lasting operation. The clamp, if, used, is withdrawn; the end-wipers are moved lengthwise by rotating the handle 35 clockwise to have their wiping-edges near their outer ends engage the upper at its heel and toe and push its ends against the last; the side-wipers are moved inwardly widthwise of the shoe onto the edge of the last by rotating the handle 61 clockwise, their skirts 68 then moving the end-wipers inwardly widthwise of the shoe; the end-wipers may then be moved farther lengthwise if desired, and the heel-wipers are closed widthwise to bring all the wipers to their lasting position, as shown in Fig. 2, thus drawing or stretching the upper upon the body of the last and laying its welted-edge onto the sole of the last. By rotating the handles 35 and 61 counterclockwise the wipers are spread to their open position, when the lasted upper and. its last may be removed from the machine.

I claim:

1. In a lasting machine, heel-wipers and toewipers, independently mounted side-wipers whose ends overlie the heel-wipers and toe wipers, and means associated with and controlled by the sidewipers and constructed and arranged to impart lasting movement to the heel and toe wipers when the side-wipers are moved to lasting position.

2. In a lasting machine, heel-wipers and toewipers, side-wipers independently movable relative to said end-wipers and having their ends overlying them, and co-operatingelements on the side-wipers and their associated end-wipers for transmitting the lasting movement of the side-wipers to the end wipers.

3- In a lasting machine, heel-wipers and toewipers having operative movement lengthwise and widthwise of a shoe in the machine, independently mounted side-wipers whose ends overlie the aforesaid wipers, means to efiect lasting movement of the side-wipers, and means carried by the side-wipers and arranged to give lasting movement to the end-wipers as the side-wipers are advanced and to permit the end-wipers to open when the side-Wipers are retracted.

4. In a lasting machine, heel-lasting wipers and toe-lasting wipers having operative movement lengthwise and widthwise of a shoe in the machine, and independently mounted side-wiper units each comprising a wiper whose ends overlie the heel and toe wipers and means constructed and arranged to effect lasting movement of the heel and toe wipers during the lasting movement of the side-wipers.

5. In a lasting machine, heel-wipers and toewipers, a common actuator for moving said sets Of wipers toward and away from each other lengthwise of a shoe in the machine, side-wipers movable towards and away from the sides of the shoe, and an abutment on each side-wiper constructed to move its associated end-wipers into lasting position when the side-wipers are moved to lasting position and to release the end-wipers when the side-wipers are retracted.

6. In a lasting machine, heel-wipers and toewipers, a common actuator for moving said sets of wipers towards and away from each other lengthwise of a shoe in the machine, side-wipers movable towards and away from the sides of the shoe, and co-operating portions on each sidewiper and its associated end-wipers arranged and constructed to advance the end-wipers into lasting position when the side-wipers are advanced to lasting position and to permit the end-wipers to be retracted after the side-wipers are retracted.

7. In a lasting machine, heel-wipers and toewipers having operative movement lengthwise, and widthwise of a shoe in the machine, a common actuator to move said sets of wipers towards and away from each other lengthwise, side-wipers movable towards and away from each other widthwise of the shoe, a common actuator for the side-wipers, and a skirt on each side-wiper constructed and arranged to move the end-wipers widthwise when the side-wipers are advanced to lasting position.

8. In a lasting machine, a pair of heel-wipers and a pair of toe-wipers having operative movement iengthwise and widthwise of a shoe in the machine, the wipers of each pair being normally spring-stressed to open widthwise of the shoe, a common actuator for moving said pairs of wipers towards and away from each other lengthwise of the shoe, side wipers movable widthwise of the shoe and having their ends overlying the endwipers, a common actuator for moving the sidewipers towards and away from the shoe, and means associated with each side-wiper and constructed to close the associated end-wipers widthwise of the shoe into lasting position when the side-wipers are moved into lasting position.

9. In a lasting machine, a pair of heel-wipers and a pair of toe-wipers having operative movement lengthwise and widthwise of a shoe in the machine, the wipers of each pair being normally spring-stressed to open widthwise of the shoe, a common actuator for moving said pairs of wipers towards and away from each other lengthwise of the shoe, side-wipers movable widthwise of the shoe and having their ends overlying the endwipers, a common actuator for moving the sidewipers towards and away from the shoe, and an abutment associated with each side-wiper and arranged to close the associated end-wipers into lasting position when the side-wipers are closed in their lasting position.

10. In a lasting machine, a pair of heel-wipers and a pair of toe-wipers, a common actuator for moving said pairs of wipers lengthwise of a shoe in the machine, means to vary the extent of said lengthwise movement, a pair of side-wipers having their ends overlying said end-wipers, a common actuator for moving said side-wipers towards and away from each other widthwise of the shoe, and means to adjust the operative position of the side -wipers lengthwise of the machine.

11. In a lasting machine, a pair of wiper-heads,

a common actuator for moving the heads towards and away from each other lengthwise of a shoe in the machine, a pair of wiper-carriers pivoted on each head, a pair of end-wipers mounted on the carriers on each hand, spring-actuated means for yieldingly urging the wipers of each pair to their spread position, a pair of independently mounted side-wipers whose ends overlie the endwipers, a common actuator for moving the sidewipers widthwise of the shoe, and means operated by the lasting movement of the side-wipers to move the end-wipers of each pair to lasting position.

12. In a lasting machine, a pair of heel-wipers and a pair of toe-wipers having operative movement lengthwise and widthwise of a shoe in the machine, spring-actuated means for yieldingly stressing the wipers of each pair to their spread position, a pair of independently mounted sidewipers whose ends overlie the end-wipers, and means operated by the side-wipers and constructed to move the members of each pair of endwipers into lasting position when the side-wipers are advanced to lasting position and permit said members to resume their spread position when the side-wipers are retracted.

13. In a lasting machine, a wiper support comprising an upright bracket having an elongated closed slot, a post carrying a headed set-screw passing freely through said slot and having a wiper-seat at its upper end, a pair of ears on the sides of the post near its lower end constructed and arranged to loosely straddle said bracket, and set-screws carried by the ears in the line of said bracket.

14. In a lasting machine, a side-wiper unit comprising a base, a post having heightwise movement on said base, and carrying a wiper-seat at its upper end, and a set-screw connection between the post and base to lock the former in different elevations on the latter, and supports to set the side-Wiper unit in different positions lengthwise and widthwise of the machine.

15. In a lasting-machine, a pair of heel-wipers and a pair of toe-wipers adjustable towards and away from each other lengthwise of the machine, a pair of side-wipers whose ends overlie said end-wipers, wiper-posts for said side-Wipers, bases constructed and arranged to carry the posts at different heightwise elevations, and heads constructed and arranged to carry the bases at different positions lengthwise of the machine.

16. In a lasting machine, heel-wipers and toewipers having operative movement lengthwise and widthwise of a shoe in the machine, side-wipers having operative movement widthwise of the machine and their ends overlying the said endwipers, sectional supports for the wipers constructed and arranged to carry the wipers at different heightwise elevations, a common actuator to adjust the sets of endwipers towards and away from each other, and means to adjust the side-wipers in different positions lengthwise of the machine.

17. In a lasting machine, a wiper-head, a pair of end-wiper carriers having a common pivot on the head, a frame on the outer end of the head having an elongated horizontal slot in its outer portion, a bearing-plate having a stem movable in the slot, set-nuts to lock the stem in adjusted positions in the slot, a bell-crank lever pivoted on the head, and operative connections between the lever and the Wiper-carriers.

18. In a lasting machine, a wiper-carrier, a wiper-support comprising a bracket adjustably mounted on the carrier and a post adjustable heightwise on the bracket, adjustable connections between the post and bracket to lock the former in tilted positions on the latter, and connections between the carrier and bracket to lock the latter in different widthwise positions on the carrier.

19. In a lasting machine, an opposite pair of sidewiper heads movable widthwise of the machine, a screw-shaft centrally journaled in a bearing and constructed to move the heads towards and away from each other, and means to shift the bearing widthwise of the machine and lock it in adjusted position.

JOSEPH W. BARNA.

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