US2415354A

US2415354A - Method and apparatus for uplasting footwear

Info

Publication number: US2415354A
Application number: US568472A
Authority: US
Inventors: Jacob S Kamborian
Original assignee: Individual
Current assignee: Individual
Priority date: 1944-12-16
Filing date: 1944-12-16
Publication date: 1947-02-04
Anticipated expiration: 1964-02-04

Description

Feb. .7- J. 5. KAMBORIAN 2,415,354

METHOD AND APPARATUS FOR UPLASTING FOOTWEAR Filed Dec. 16, 1944 2 Sheets-Sheet l y INVENTOR.

Jaaa&jllfamarm Feb. 4, 1947. s. KAMBORIAN. 2,415,354

METHOD AND APPARATUS FOR UPLASTING' FOOTWEAR Filed Dec. 16,- 1944 2 Sheets-Sheet 2 INVENTOR.

Jae a5 EMarzfara Patented Feb. 4, i947 METHOD AND APPARATUS FOR UPLASTING FOOTWEAR .iacob S. KamboriamWest Newton, Mass.

Application Becember 16, 1944, Serial No. 568,472

21 Claims.

This invention pertains to an improvement in the manufacture of footwear and relates more particularly to a machine for use in the lasting of shoes of the California, force-lasted or slip-lasted type.

Shoes of this type are characterized by the provision of a flexible strip or wrapper secured to or integral with the lower margin of the upper and constituting a lasting margin which conceals and protects an intermediate, middle, or cushion sole usually designated as a platform the lasting margin being suitably bonded to the bottom surface of the platform.

One method of lasting such shoes includes the steps of uniting the upper and sock lining, securing the wrapper to the lower margin of the upper, introducing a last and securing the platform thereto. the wrapper is parallel to the upper and surrounds the last or at least the lower part thereof.

In order to bond the wrapper to the bottom surface of the platform so that it conceals the edge wall thereof, it is necessary that the wrapper be shifted from the position parallel to the upper into the plane of the upper. This shifting of the wrapper is termed in the trade up-lasting since it has heretofore been performed with the shoe up side down and that term will be used herein despite the fact that, as will be pointed out hereinbelow, the shifting is performed with the shoe in its normal position.

This Lip-lasting of the wrapper may be and often has been carried out by hand with the assistance of lasting pincers particularly at the heel and toe of the shoe where the wrapper tends to resist such movement. A machine for performing this operation is disclosed in U. S. Patent 2,394,997, granted February 19, 1946, on an application filed by Jacob S. Kamborian. While this machine has proven satisfactory, there is a demand for a simpler machine having a minimum of moving parts and by which the wrapper is up-lasted at the forepart and heel of the shoe, any intermediate portions of the wrapper being subsequently up-lasted by hand.

The primary object of this invention is to provide a machine which can be employed by the operator as a substitute for the lasting pincers and by which the wrapper at heel andtoe of the shoe can be quickly and satisfactorily uplasted. A further object of this invention is to provide a machine by which the up-lasting operation is performed with the shoe in the normal position so that the operator can readily and easily determine if the wrapper has been drawn At this point in the lasting operation snugly around the edge wall of the platform. Another object of the invention is to provide a fulcrum about which the lasted shoe is rocked in the performance of the up-lasting step, such fulcrum being movable in a vertical plane to facilitate the insertion of the lasted shoe and to vary the movement of the shoe as it is being uplasted in response to the resistance set up by the wrapper to up-lasting.

Other objects of the invention will appear from a consideration of the following description thereof and of the accompanying drawings which illustrate one embodiment of the invention and in which Fig. l is a side elevation of a machine embodying one form of this invention;

Fig. 2 is a plan of such machine;

Fig. 3 is an enlarged cross section taken along the line 33 on Fig. 1;

Fig. 4 is a side elevation illustrating the operation of the machine in accordance with this invention;

Figs. 5 and 6 are cross sectional views of a lasted shoe before and after it has been uplasted; and

Fig. 7 is a section through both turning fingers showing each finger provided with a gripper jaw which seizes the free edge of the wrapper.

The machine illustrated in the drawings as one embodiment of the invention comprises a base i, a pedestal 2 extending upwardly therefrom, a rod '3 carried by the base i and vertically reciprocable relative thereto by any suitable means as for example a treadle it positioned for actuation by the operator of the machine. The pedestal 2 is here shown as integral with the base I' but obviously it might, if deemed desirable,

be a separate u rigidly secured in position. Fixed at the top 0 the pedestal 2 is a cylindrical head 4 provided in its periphery with a continuous channel 5 and having a hole 8, extending diametrically and transversely through the head i, and opening at each end into the channel 5.

A pair of arms l is secured. to the head by means of a rod 8 which passes through the hole 6 and apertures 9 in the arms near one end thereof. The arms are yieldably held in contact with the head t by means of springs it surrounding the ends of the rod 8, the tension of the springs being regulated by nut and washer units ii in mesh with the threaded ends of the larger diameter than the rod 8 and since the channel is annular, the arms may swing horizontally during the operation of the machine. It will also be noted that the arms and channel are of such dimensions that the arms are held at a desired relation to the base, shown in the illustrated embodiment as parallel to the base and are prevented by the walls I3 of the channel 5 from moving substantially out of this selected relation.

The free ends of the arms I are provided with inwardly directed turning fingers [4 which exend rearwardly and downwardly as shown in Figs. 1 and 2. The lower corners of the tips of the fingers are preferably rounded. While the fingers M are here shown integral with the arms it is obvious that they might be separate elements secured to the arms by any suitable means. The fingers M are tapered in cross section (Fig. 3) and are preferably curved so that they are slightly concave toward each other as shown in Fig. 2 and thus they conform to the contour of the opposite sides respectively of the upper at either the toe or the heel end of a shoe, the two curved fingers collectively constituting a turning tool of generally U-shape within whose cavity the end portion of the shoe is received. The distance between the fingers l4 may be regulated as desired by turning the nuts 1! on the rod 8 and thus pivoting the arms I about the head 4.

The rod 3 comprises a stem freely reciprocable in a boss l6 and a crowned cap I! which serves as afulcrum for the shoe during the up-lasted operation as hereinafter described. The crowned conformation of the cap ll permits rocking and sliding the shoe so that it is easily raised and retracted by the operator relative to the fingers [4.

The rod 3 is so located with. reference to the fingers N that when it is raised by actuation of th treadle [8 the fingers will enter the space between the wrapper and the upper of a shoe resting on the cap I! (Fig. l)

The operation of this machine will be described in the up-lasting of a shoe of the type known in the trade as California, force-lasted or slip-lasted. Such a shoe comprises an upper 20, a sock lining united therewith, and a wrapper 22 attached to the margin of the upper. A last 23 is introduced by forcing or slipping it into the shoe and a platform 24 is attached to the sock lining 2i by the means of adhesive, mechanical fasteners or the like. The wrapper 22 at this point in the manufacture of the shoe is parallel to the upper. The purpose of this machine is to shift or up-last the wrapper so that it is in the plane of the upper and extends past the edge wall of the platform 24. In order to make a satisfactory shoe the wrapper must be drawn snugly about the edge wall of the platform.

The operator places one end of the shoe, held in its normal position, with the fingers M in the space between the wrapper and the upper at both sides of the toe or heel end of the shoe. The arms I have been previously so set by the operator by means of the nuts II that the fingers I4 bear snugly upon the upper at each side of the shoe. The post 3 is then raised to bring the cap I! into contact with the sole of the shoe which is then rocked on the cap H as a fulcrum to raise that end of the shoe which is held between the fingers !4 and concomitantly slid over the cap to retract the shoe from between the fingers. As a result of these movements the tips of the fingers I4 wipe or peel the portion of the wrapper engaged thereby past the edge wall of the platform 24 and up-last it. This operation is repeated upon the wrapper at the other end of the shoe and the up-lasting of any portion of the wrapper not up-lasted, usually at the shank, is performed manually without difficulty. Since the shoe is held in its normal position the operator can watch the operation and so manipulate the shoe that the wrapper will be wiped snugly over the edge of the last.

In order to increase the draw upon the wrapper and thereby to insure a snug wiping over the edge of the last, the fingers l4 may be provided with spring pressed gripper jaws 25 (Fig. '7), having manually actuabl handles 26, which are caused to seize the free edge of the wrapper at the beginning of the turning operation and thereby drag the wrapper over the edge of the last, such jaws 25 being so constructed, that, as the turning operation is completed, the edge of the wrapper will be withdrawn from the jaws.

The machine has been described in its operation upon one type of shoe but it will be understood that other types of shoe can be up-lasted by it. Consequently in the claims referenc is made to the treatment of the lasting margin of the shoe upper which includes but is not limited to the wrapper of a California shoe. Similarly the generic term sole has been used to cover not only the platform of that shoe but any middle, cushion or intermediate sole or insole past the side wall of which the lasting margin extends.

While one embodiment of this invention has been shown and described it will be understood that the invention is not limited thereto and that other embodiments may be made without departing from the spirit and scope of the invention as set forth in the accompanying drawings.

I claim:

1. In a machine for up-lasting the lasting margin of a shoe, a base, a pedestal mounted on said base, a pair of arms, each arm being attached adjacent one end to said pedestal and terminating at its other end in a rearwardly and downwardly inclined finger, means carried by said finger for seizing the free edge of the lasting margin and a fulcrumed member vertically reciprocable in said base below said fingers.

2. In a machine for Lip-lasting the lasting margin of a shoe, a base, a pedestal mounted on said base, a pair of arms, each arm being attached adjacent one end to said pedestal and terminating at its other end in a rearwardly and downwardly inclined finger, means carried by said finger for seizing the free edge of the lasting margin, means yieldably holding said arms in contact with said pedestal and a fulcrum member vertically reciprocable in said base below said fingers.

3. In a machine for up-lasting the lasting margin of a shoe, a base pedestal mounted on said base, a pair of arms, each arm being attached adjacent one end to said pedestal and terminating at its other end in a rearwardly and downwardly inclined finger, means yieldably holding said armsin contact with said pedestal, yieldable means connecting the first mentioned ends of said arms, and a fulcrum member verticaliy reciprocable in said base below said fingers.

and downwardly inclined finger and means carried by said finger for seizing the free edge of the lasting margin,

5. In a machine for up-lasting the lasting margin of a shoe, a base, a pedestal mounted on said base, a pair of arms, each arm beingattached adjacent one end to said pedestal and terminating at its other end in a rearwardly and downwardly inclined finger, and means yieldably urging said fingers toward each other.

6. In a machine for up-lasting the margin of a shoe upper, a base, a pedestal mounted on said base, a pair or arms, each arm being attached adjacent one end to said pedestal and terminating at its other end in a rearwardly and downwardly inclined finger, means yieldably urging said fingers toward each other, and means for preventing vertical travel of said arms.

7. In a machine for up-lasting the margin of a shoe upper, a base, a pedestal mounted on said base, a pair of arms, each arm being attached adjacent one end to said pedestal and terminating at its other end in a rearwardly and downwardly inclined finger, and means engaging the first mentioned ends of said arms for yieldably urging said fingers toward each other.

8. In a machine for up-lasting the margin of a shoe upper, a base, a pedestal mounted on said base, a pair of arms, each arm being attached adjacent one end to said pedestal and terminating at its other end in a rearwardly and downwardly inclined finger, and means engaging the first mentioned ends of said arms for yieldably urging said fingers toward each other and means preventing vertical travel of said arms.

9. In a machine for up-lasting the lasting margin of a shoe, a pair of downwardly inclined fingers yieldably held in spaced relation to each other and a fulcrum member upon which the shoe is supported with one end of the shoe between said fingers and with the fingers inserted between the lasting margin and the upper at each side of the shoe respectively near the end thereof and about which fulcrum member the shoe is rocked to cause the fingers to up-last the lasting margin.

10. In a machine for up-lasting the lasting margin of a shoe, a pair of downwardly inclined fingers yieldably held in spaced relation to each other, a fulcrum member upon which the shoe is supported with one end of the shoe between said fingers and with the fingers inserted between the lasting margin and the upper at each side respectively of the shoe near the end thereof, and about which fulcrum member the shoe is rocked to cause the fingers to up-last the lasting margin and means for raising and lowering the fulcrum member to facilitate the treatment of the shoe.

11. That method of up-lasting a lasted shoe by the use of a pair of fingers which comprises the steps of holding the shoe in its normal position, introducing the fingers between the wrapper and upper at both sides of the shoeadjacent one end thereof, and rocking the shoe to raise that end relative to the fingers whereby the wrapper is up-lasted.

12. That method of up-lasting a lasted shoe by the use of a pair of fingers which comprises the steps of holding the shoe in its normal position, introducing the fingers between the wrapper and upper at both sides of the shoe adjacent one end thereof and concomitantly rocking the shoe to raise that end relative to the fingers and retracting the shoe from said fingers whereby the wrapthe steps of holding the shoe in its normal posi-- tion, introducing the fingers between the wrapper and upper at both sides of the shoe adjacent one end thereof into yieldable contact with the upper and rocking the shoe to raise that end relative to the fingers whereby the wrapper is wiped down and Lip-lasted.

14. That method of up-lasti-ng a lasted shoe by the use of a pair of fingers which comprises the steps of holding the shoe inits normal position, introducing the fingers between the wrapper and upper at both sides of the shoe adjacent one end thereof into yieldable contact with the upper and concomitantly rocking the shoe to raise that end relative to the fingers and re-' 15. That method of up-lasting by the use of a pair or fingers, the wrapper of a lasted shoe comprising an upper, a sock lining, a wrapper and a platform, said upper and lining being united, said wrapper being attached to the upper and being substantially parallel thereto, and said platform being secured to the sock lining, which method comprises the steps of inserting the fingers between the wrapper and the upper at one end of the shoe and setting up a relative rocking movement between the shoe and the fingers by which the wrapper at that end of the shoe is wiped snugly about the edge wall of the platform and up-lasted.

16. That method of up-lasting by the use of a pair of fingers, the wrapper of a lasted shoe comprising an upper, a sock lining, a wrapper, and

a platform, said upper and lining being united, said wrapper being attached to the upper and being substantially parallel thereto, and said platform being secured to the sock lining, which method comprises the steps of inserting the fingers between the wrapper and the upper at one end of the shoe and setting up relative rocking and longitudinal movement between the shoe and the fingers by which the wrapper at that end of the shoe is wiped snugly about the edge wall of the platform and up-lasted.

17. That method of up-lasting the wrapper at one end of a shoe of the force-lasted type which comprises as steps introducing abutment elements between the wrapper and upper at opposite sides of said end of the shoe, and swinging the shoe about a fulcrum intermediate its ends so as to cause the aforementioned end of the shoe to move relatively to the abutment elements so as to peel the wrapper away from the upper.

18. That method of up-lasting the wrapper at one end of a shoe of the force-lasted type which comprises as steps positioning the shoe right-side up, introducing abutment elements between the upper and wrapper at one end of the shoe and swinging the other end of the shoe downwardly about a transverse fulcrum intermediate its ends, thereby to cause the aforementioned end of the shoe to rise relatively to the abutment elements so as to peel the wrapper downwardly away from the upper.

19. A machine for rip-lasting the lasting margin of a shoe having such lasting margin parallel to the upper whereby such margin is brought into the plane of the upper, comprising a vertically reciprocable fulcrum member upon which the sole of the shoe rests, arms terminating in fingers which fingers enter the space between the lasting margin and the upper at opposite sides of the shoe and means for actuating said member to raise the shoe between the arms whereby when the shoe is rocked upon the member, the fingers act upon the lasting margin to up-last the same.

20. In a machine for uplasting the lasting margin of a shoe comprising an upper and a sole member, independent opposed concave elements collectively defining a tool of generally U-shape designed substantially to embrace an end portion of a shoe upper, said concave elements being relatively movable thereby to vary the eiTective size of the tool to accommodate shoes of different sizes, said concave elements having rounded edges designed to be entered between the lasting margin and the upper of the shoe, and a movable support engageable with the sole member of the shoe to support the shoe while the lasting margin is being turned.

21. In a machine for turning the wrapper of a force lasted shoe, a base, a pedestal mounted on the base, a vertically movable shoe support arranged to slide in a guideway in the base, and means for raising the support from an inopera- REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,336,750 La Chapelle Apr. 13, 1920 1,291,757 Brothers Jan. 21, 1919 FOREIGN PATENTS Number Country Date 271,510 German Aug. 30, 1913 353,755 British July 30, 1931