US935765A

US935765A - Shoe-turning machine.

Info

Publication number: US935765A
Application number: US34568106A
Authority: US
Inventors: Benjamin F Mayo
Original assignee: United Shoe Machinery Co AB
Current assignee: USM Ltd; United Shoe Machinery Co AB
Priority date: 1906-11-30
Filing date: 1906-11-30
Publication date: 1909-10-05
Anticipated expiration: 1926-10-05

Description

B. F. MAYO.

SHOE TURNING MAGHINE. APPLICATION FILED NOV. 30, 1906.

Patented 0011.5, 1909.

UNITED STATES PATENT onion,

BENJAMIN F. MAYO, OF SALEM, MASSACHUSETTS, ASSIGNOR TO UNITED SEIEE MACHINERY COMPANY, OF-EATERSON, NEW JERSEY, A UORPORATIQN 0F HEW JERSEY.

EHQE-TURNING MACHINE.

Specification oflctters rams.

Patented Got. 5, 1%.

Application filed November 30, 1906. Serial in). 345,681.

ing machines and more particuiarly to machines, adapted to turn the mar or counter portion of a shoe, which comprise a cupshaped form over which the shoe is turned and a plunger for forcing the shoe into the form. i

The objeotof the present invention is to provide a shoe turning machine of the class above referred to which will subject the upper of the shoe to less strain during the turning operation than machines of this class which have heretofore been devised.

\Vith the above object in view a feature of the present invention contemplates thev .provision, in a machine for turning the rear or counter portion of a shoe, of a form over which the shoe is turned having a portion of its wall movable with relation to the other portions during the turning operation so as to vary the size of the opening in the 1 I form through which the plunger operates.

Broadly considered the invention oontemplates so constructing the form that any or all portions of the wall are movable with relation to the other portions so as to vary the size of the opening in the form during the turning operation. To distribute the; strain equally upon the upper, however, it

is preferred to so construct the form that the side walls are movable inwardly toward each other during the turning operation and in the best form of the invention which has yet been devised this is accomplished by pivotally mounting the side walls of the form upon the base of the form.

practice the plunger having a work engaging face of less width than the heei seat of the sole of the shoe being operated it is desirahie that the heel seat of the time sole expansible plunger which is? be pressed out flat at the completion of the turmng operation, and to enable this to be done a plunger is preferably provided so constructed that it can be expanded during the turnin operation. The combination of an eKpa rsible plunger with a form having a portion of its Wall movable with relation to the other poition to reduce o opening in the form is consi tutea :feature of the present es the heel portion of a shoe into a form. to turn the shoe is also considered to constitute a feature of the whether or not the Wall of the form is provided-with movable portions.

In addition to thefeatures above referred to the present invention also consists in certain devices, arrangements and combination of parts hereinafter described and claimed the advantages of which will be obvious to those skilled in the art from the following description.

The several featuresof the present invention will be clearly understood from an inspect-ion of the accompanying drawing in Which- Figure 1 is a view in side elevation of a shoe turning machine embodying the some in their preferred form. :2 is a view in front elevation partly in section of the shoe turning form illustrated in Fig. 1. Fig. 3 is -a view in side elevation of the form. Fig. 4

is a view in side elevation of the plunger to gether with a portion of its support and a portion of the mechanism for expanding the plunger; and Fig. 5 is a view in front clcvation of the parts illustrated in Fig. l.

In the machine illustrhted in F 1 the mechanisms for movingthe plunger into and out of the form and for supporting and actuating the form are constructedand arranged to operate as in a Well known shoe turning machine, the plunger being mounted in the m'erhanging arm of a lever 1 pivoted at 2 upon-the frame of the machine and the form being mounted upon a carrier 3 pivotally mounted at 4 upon the frame of the machine. The ieve'r l is connected by means of a rod 5 to a foot treadle, and the carrier 3 is pro vided with a rearwardly extending arm (3 which is connected by means of a link 7 to the lever l, the construction being such that I a depression of the treadlc moves the lpiundownwardly through the opening in the upper portionof the form and simultane ously moves the form toward the plunger.

projecting from the si plunger descends and forces the heel seat of The improved form illustrated in the drawing comprises a base portion 8, of sub stantially the same shape as the base portion of the form which has heretofore been employed in this class of machines, and two side walls 9 and 10. These side walls, instead of being rigid with the base, as in prior constructions, are pivotally mounted at 11 andl2 upon the base so that they are. capable of swinging inwardly toward each other. The base is recessed, as best shown in Fig. 2, to receive the lower ends of the side walls, and the outward movement of the walls is limited by the engagement of the lower ends of the walls with these recesses. The side walls are normally held in their extreme outward position by means of

leaf springs

13 and 14, secured to the sides of the base and provided with slots on

agin pins

15 and 16 5e wal s. At their up per edges the side walls may be provided with. small rolls 1'? and 18 to reduce the friction upon the shoe upper during the turning operation.

In the operation of the machine the shoe is placed upon the form while the plunger is raised, the side walls of the form being in the position indicated in Fig. 2. As the the sole-down into the form the pressure exerted by the u per upon the form swings the side walls of t e form inwardly and thereby permits the shoe to be turned without bringing an injurious strain upon .the upper as will be oh'yious without further explanation.

Theiniproved plunger illustrated. in the drawing comprises two

portions

19 and 20, which are ivotally mounted at their upper ends to a loclr2l so as to be capable of swinging toward and from each other in a direction transverm to the sole of the shoe being operated u on. The block21 is secured by means 0 a split clamp and clamping bolt 22 in the overhanging arm of the lever 1. When the plunger is in its raised position the two parts of the plunger are in the position indicated in Fig. 5, being heldin this position by leaf SPI'IHOS 23 and 24 secured to the lever' 1 and hearing at their lower ends against the outer sides of the plunger. After the work-engaging surface of the plunger passes below the upper edge of the side walls of the form during the turning operation, the plunger is expanded laterally, that is, in a direction transverse of the sole of the shoe bein operated upon, so that the heel seat of-the so e is pressed out fiat upon the base of the form. To accomplish this result a rod 25'is provided which is pivoted at 2 upon the frame of the machine and extends at its forward end through a slot 26 formed by cutting away the inner adjacent surfaces of the

portions

19 and 20 of the plunger.

The side walls of this slot are so shaped, as

indicated in Fig. 5, that. the plungeris expanded during its downward stroke after it has entered the form, and is contracted during its upward movement before the workengaging surface of the plunger is entirely removed from the form. To cause the form to be expanded and contracted at the proper times during the upward and downward movements of the plunger the rod 25 is permitted to move with the plunger during a portion of its movements in both directions. The movements of the rod 25 are stopped by pins 27 and 28 projecting from the machine frame on opposite sides of the rear end of the rod.

The nature and scope of the present invention having been indicated and a machine embodying the various features of the pres ent invention in their preferred form having been specifically described, what is claimed 181- 1,. A machine for turning the rear or counter portion of a shoe, having, in combination, a form over which the shoe is turned having a portion of its wall movable with relation to the other portions to vary the opening of the form during the turning operation, and a plunger cooperating with the form to turn the shoe.

2. A machine for turning the rear or counter portion of a shoe, having, in combination, a form over which the shoe is turned provided with side walls movable to reduce the opening of the form during the turning operation, and a plunger cooperating with the form to turn the shoe.

3. A machine for turning the rear or counter portion of a shoe, having, in combination, a form over which the shoe is turned comprising a base and side walls pivoted to the base so as to move inwardly and reduce the opening of the form during the turning o eration, and a lunger cooperat ing with t e form to turn t e shoe.

4. A machine for turning the rear or counter portion of a shoe, having, in combination, a form over which the shoe is turned, having a portion of its wall movable with relation to the other portions to reduce the opening of the form during the turning operation, and an expansible plunger coiiperating with the form to turn the shoe, and means for expanding the plunger durin the turning operation.

5. machine for turning the rear or counter portion of a shoe, having, in combination, a form over which the shoe is turned provided with side walls movable to reduce the opening of the formduring the turning operation, a plunger cooperating with the term to turn the shoe expansible laterally in opposite directions, and means to expand the plunger during the turning operation.

I .6, K machine for tiirning the rear oreounterportionof a shoe, having, in combination, a form over whiehithe shoe is turned, having a ortion ofits wall movable with relation to the other portions to reduce the opening of the form during the turning operation, and an expansible plunger eobination,

in comturned, an expansible plunger to engage the heel portion of the'shoe' sole and force the shoe into the form to turn the shoe, and

means for expanding the plunger during the 15 turning operation.

In testimony whereof I efiix my signature,

in presence of two witnesses.

BENJAMIN F MAYO. Witnesses:

FRED O. F153, FARNUM F. Donsny.