US1695344A - Machine for turning shoes - Google Patents

Description

Dec. 18, 1928.

. W. PROULX MACHINE FOR TURNING sHoEs original Filed Nov. '12. 1925 l D 3o c f O Flgll 6 c Imm. IO 8 38 D l s 'i I8 2 a l'!|1. 2g 4 l2 fm MW zzz-: n /4 220 v,"

cs .lll la Patented Dec. 18, 1928.

UNITED STATES PATENT OP'FKE.-Y

WALTER PROULX, 0F NORRIDGEWOCK, MAINE, ASSIGNOR TO UNITED SHOE MACHIN- ERY CORPORATION, OIE PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

MACHINE non TURNING sHons.

Application led November 12, 1925, Serial No. 68,585. Renewed March 5, 1928.

This invention relates to machines or des vices for turning shoes or for assisting in the performance of this operation. The invention is herein shown as embodied in an lexpansible forepart form or upper spreading device especially adapted for use in a shoe turning machine, such for Vexample as that disclosed in United 'States Letters Patent No. 706,038, granted August 5, 1902, on application of Andrew Eppler.

In accordance with the usual practice in turning the forepart of a shoe with the aid of a turning machine a. forepart form is employed which extends within the forepart of the shoe and holds it in position to be operated upon. The toe of the shoe is held in place against the forepart form throughout the turning operation by means of a turning iron and usually an auxiliary turning implement is also employed which is advanced to engage the sole of the shoe to give it a preliminary bend or break and then recedes as the turning operation progresses. To turn the forepart of a shoe in a machine of this character an operative takes hold of the heel portion of the shoe and by pulling it forward turns the forepart on itself, slipping it olf the form and onto the t-urning iron. It has been proposed to make the forepart form collapsible and to connect it with the auX- iliary turning implement in such a way that when the latter is advanced into worlr engaging position the form will be expanded to facilitate the beginning of the turning operation and while the turning implement is receding the form will be gradually restored to collapsed condition preparatory to receiving the next shoe which is to be operated upon.

An object of the present invention is to provide an expansible' forepart form or upper spreading device for use in a machine of the type referred tohaving an improved construction and mode of operation whereby the turning of the forepart of a shoe may be still further facilitated.

To the accomplishment of this object one feature of thel invention consists in the provision, for use in turning shoes, of a tapering form or upper spreading device adapted to expand to increase its angle o f taper, and means constantly tending to expand the form. As shown herein, the form comprises two angularly disposed upper spreading arms which are arranged at opposite sides of a horizontally disposed supporting spindlcand the forward ends of the arms are pivoted to the forward end of the spindle while the rear ends of the arms are movable to vary the angle of taper of the form. and are connected with a spring constantly tending to move the arms outwardly. In use the illustrated form. is contracted somewhat to facilitate the placing of the forepart of a shoe thereon, and subsequently a spring functions to urge the tapering sides of the form outwardly throughout the turning operation independently of any action on the part of the operator. rlhus, not only is the spreading action automatic and independent of the movement of the auxiliary turning implement, but the form functions to take up the fullness of the upper throughout the entire turning operation so that the portion of the upper which is being turned back upon itself will be held away from the edge of the sole along the forward portion of the forepart as well as at the ball to insure that the upper will not catch or bind against any portion of the sole to interfere with or retard the turning operation. As illustrated, operative connections are lprovided between the `form and a movable part of the turning machine for automatically contracting the form before a shoe is applied thereto but if desired these connections may be dispensed with and the form may be contracted manually as the shoe is being placed thereon by the operator.

The above and other features of the invention will best be understood from a description of the preferred embodiment thereof shown in the accompanying drawings, in which Fig. l is a side elevational view of a por`- tion of the shoe turning machine disclosed in Letters Patent No. 7 06,038 above referred to, showing the improved shoe form applied thereto;

Fig. 2 is aplan View, on an enlarged scale, of the shoe formV shown in Fig. 1; and

Fig. 3 is a View in side elevation of the form, showing also connections with the turning machine whereby the form is adapted to be automatically contracted.

Referring to the drawings, the illustrated form comprises a supporting spindle 4, a pair of upper spreading lingers 6, 6 whichare arranged at opposite sides of the spindle and 'are movable inwardly and outwardly so that the form may be contracted and expanded, and a spring-controlled collar 8 slidable on the spindle 4l and connected by links 10, 10 with the spreader lingers 6, 6. The form is adapted to be supported in a horizontal position in the machine of the abovementioned patent and to this end the cylindrical eX- tremity 12 of the spindle t may be rigidly secured to the turret l) of the machine. rEhe form, thus supported, is adapted to be used in connection with a turning iron and auxiliary turning implement such as shown at C and H, respectively, in said Letters latent' and designated by similar reference cha-racters in Fig. 1. The invention is in no wise restricted, however, to use in connection with turning devices of any specific type.

The upper spreader lingers 6, G are connected to the opposite or forward extremity of the spindle l by means of pivot studs 14, 14. The links 10, 10 are connected by pivot screws 16, 16 with the rear ends of the spreader fingers 6, G and by means of pivot screws 18, 18 with the ears 20, 2O at opposite sides of the slidable collar 8. A coiled spring 22, secured at one end to the spindle l and at its opposite end to the collar 8, occupies a recess 2st in the collar 8 and tends to maintain the form in fully expanded condition. The spring 22 normally holds the collar against a suitable abutment (illustrated as a lug 26 on the spindle ll) which determines the outermost position of the spreader lingers 6, 6. As shown, the spreader fingers are oppositely in clined so as to provide the desired tapering contour of the form. The forward portion of the spindle el is somewhat flat-tened, 'as shown at 28, to facilitate the closing or inward movements of the fingers (i, G as the form is being contracted. ln the expanded position of the form the fingers 6, 6 are spread apart sulficiently to adapt the form for use in connec tion with the largest size and width of shoes to be operated upon.

rlfhe form is adapted to enter the interior of the forepart of the upper of a shoe to facilitate the operation of turning the fore- Vpart and means is provided for automatically contracting the form preparatory to the placing of a shoe thereon. For this purpose, as shown in Figs. 1 and 3, operative connections are provided between the form and a rock shaft c, such as the rockshaft similarly designated in the patent referred to, and Vthese connections,comprise an arm 30, rigidly secured to the rockshaft and a suitable cord 32 which is fastened at one end by a bolt 3l to the arm 30 and at the opposite yend to the sliding collar 8. and which passes over an idle flanged pulley 36, mounted in the forked lower end of a hanger 38 which is secured to the spindle a. Inapplying the illustrated form to the machine disclosed in the pat-ent before mentioned, the arm 30 may conveniently be substituted for the collar c7 of said machine.

ln the operation of the illustrated turning machine, the rockshaft c and the parts carried thereby are rotated 90 to move the turning iron C and the auxiliary turning implenient H out of alinem-ent with the form or spreader device to enable a shoe which has been turned to be removed from the form and a new shoe to be placed thereon, and subsequently the shaft c is rocked back again to restore the turning implements to normal position .and into operativev relation to the form.. By connectingthe form with the rockshaft, as above described, the rocking movements of this shaft become elli'ective first to slide the collar 8 toward the right in Fig. 2 to contract the form so that the shoe may convenientlyV be placed thereon and thereafter to permit the spring 22 to function to slide the collar 8 in the opposite direction to eX- pand the form within the shoe. As shown in Fig. S, a plurality of holes l0 may be provided in the arm 30 so that by shifting the bolt from one hole d() to another the connections may be adjusted to impart different degrees of contracting movement to the fingers (i, 6 of the form. If desired, however, the above described connections with the rock shaft c may be omit-ted and the form may be manually contracted by the operative preparatory to inserting it within the forepart of the shoe or the shoe may be applied to the form while the latter is fully expanded, in which case the forcing of the shoe upon the form will cause the form to contract until it accommodates itself to the size and width of the shoe. In any case the form is more or less contracted and the spring 22 is put und-er more or less tension whenever a shoe has been placed in position upon the form. The form therefore exerts continuous outward pressure upon the upper of the shoe, independently of any action on the part of the operator, after the shoe has been placed upon the form.

rllhe operator performs the turning operation in the usual manner by pulling forward the heel portion of the shoe to turn the forepart upon itself so that it is gradually slipped olfl from the form and onto the turning iron C. es the turning operation progresses the form gradually expands and the angular positions of the fingers 6, 6 change so that'outward pressure is exerted upon the shoe upper in a manner most effective to hold the upper away from the edge of the sole so that it w'll be impossible for the upper to catch or bind againstV the sole edge vin such a way as to interfere with or retard the turning operation.

It willbe noticed that the arrangement of the spreader lingers 6, 6 andthe links 10, l() is such that they operate in effect as toggle members to .slide the collar 8 in a direction to stretch the spring 22 when the form is being manuallyl contracted or is being contracted by the placing of a shoe upper upon the form. This construction facilitates the contraction of the form under the above conditions and, after the form has been contracted and the shoe has been placed in position thereon, the expansion of the form during the turning of the upper is effected automatically by means of the spring 22.

The invention having been described, what is claimed as new and desired to be secured by Letters Patent of the United States is:

1. For use in turning shoes, a tapering forepart form constructed and arranged to expand to increase its angle of taper, and means constantly tending to expand the form.

2. For use in turning shoes, an expansible form having angularly disposed work enA gaging members mounted for relative movement to vary their angular relation, and means constantly tending to produce relative movement between said members to increase the angle between them.

3. For use in turning shoes, an expansible form adapted to enter the forepart of a shoe and comprising angularly disposed work engaging members pivotally mounted at the entering end of the form, and means constantly tending to swing said members outwardly to expand the form.

4. For use in turning shoes, a tapering forepart form comprising members arranged for relative inward and outward angular movements to vary the degree of taper of the form, and yielding means constantly urging said members outward.

5. For use in turning shoes, an expansible shoe form comprising a supporting bar and laterally: movable upper spreading arms each pivoted at one end to one extremity of the bar for swinging movements laterally of the bar in opposite directions, and connections between the opposite ends of the arms and the bar tending to swing the arms outwardly.

6. For use in turning shoes, an expansible shoe form comprising a supporting bar and laterally movable upper spreading arms each pivoted at one end to one extremity of the bar for swinging movements laterally of the bar in opposite directions, connections between the opposite ends of the arms and the bar tending to swing the arms outwardly, and means for limiting the outward movement of the arms.

7. For use in turning shoes, an expansible shoe form comprising a supporting bar, arms pivoted to one end of the lbar for swinging movements laterally of the bar in opposite directions, a block slidable on the bar, links connecting the arms with the block, and means for moving the block to vary the angle of the arms relatively to the bar.

8. For use in turning shoes, an expansible shoe form comprising a supporting bar, upper spreading arms pivoted to one end of the bar for swinging movements laterally of the bar in opposite directions, means for connecting the arms to move in unison, and yielding means for forcing the arms outwardly.

9. For use in turning shoes, a tapering shoe form provided with angularly disposed members movable to vary the angle of taper of 'the form, means constantly tending to move said members outwardly to increase the angle of taper of the form, and means for moving said members inwardly to reduce the angle of taper of the form to facilitate the placing of a shoe thereon.

l0. In a shoe turning machine of the type having an expansible forepart form, a turning implement normally positioned in operative relation with respect to the form but movable out of operative relation therewith, and connections between theV form and the turning implement for contracting the form c when the turning implement is moved out of operative relation therewith.

11. In a shoe turning machine of the type having an expansible forepart form and a turning implement normally positioned in operative relation with respect to the form but movable out of operative relation therewith, connections between the form and the turning implement for contracting the form when the turning implement is moved out of operative relation therewith, and means for expanding the form when the turning implement is moved into operative relation with the form. y

12. In a shoe turning machine, an expansible shoe form, a shoe turning implement normally in alinement with the form, a roel;- shaft carrying the turning implement and capable of being rocked to move it out of alinement with the form, means for expanding the form, and connections between the roclshaft and the form for contracting the form when the turning implement is moved out of alinement with the form.

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

VALTER PROULX.

Images