US2094639A - Heel pressing machine - Google Patents

Description

Oct. 5, 1937. w. c. CARD, JR 2,094,639

' n HEEL PREssING MACHINE Filed July 23, 1935 2 sheets-sheet 14 wl g INVENTOR l .l BY

v M AToRNEYS Oct. 5, 1937. w. c. CARD, JR

HEEL PRESSING MACHINE Filed July 25, 1935 2 Sheets-Sheet 2 lNvENToR l BY MWh-ORN Ys Patented Oct. 5, 1937 UNITED PATENT OFFICE to Compo Shoe Machinery Corporation,

New

York, N. Y., a corporation of Delaware Application July 23, 1935, Serial No. 32,692

17 claims.

This invention relates generally to heel pressing operations in the manufacture of shoes, and more particularly to the cement, aflixation of heels to lasted shoes.

An object of the invention is to provide a heel afxing or pressing machine having Ian improved construction capable f giving enhanced performance.

More particularly, objects of the invention are `to provide a machine for pressing heels to shoes, Which is easy to operate and is rapid and eflicient in production.

Another object of the invention is to provide an impro-ved method of attaching and treating heels. l

Other objects of the invention will in part be obvious and will in part appear hereinafter.

The invention accordingly comprises the features of construction, combination of elements, and arrangement of parts, which will be exemplied in the construction hereinafter set forth and the scope of the application of which will be indicated in the claims.

For a fuller understanding of the nature and objects of the invention, reference should be had to the following detailed kdescription taken in connection with the accompanying drawings, in which:

Fig. 1 is a side elevation of a heel pressing machine embo-dying principles of the invention, parts thereof being broken away and shown in section better to illustrate the construction;

Fig. 2 is a fragmentary vertical sectional view,

on an enlarged scale, showing one of the presses used in the machine;

Fig. 3 is a fragmentary Vertical'sectional View taken substantially along line 3-3 of Fig. 2; and

Fig. 4 is a fragmentary vertical sectional view taken substantially along line of Fig. 3.

The machine of the present invention is generally useful in any operation involving the pressing of heels against the heel seat of a lasted shoe. It is specifically intended for the cement aflixation of high heels to ladies and misses shoes, although it will be understood that its principles and features of construction are applicable regardless o-f the particular type of-foot- Wear involved, and also whether the aflixation is effected entirely by means of cement, or whether nailing, screwing or otherY forms of fastening means are employed, so long as it is desired to apply pressure against a heel located in position on the heel seat of a shoe.

lReferring more particularly to the drawings, uthere is a frame I0 which is adapted to be set Or fastened on the work room oor. This frame has a vertically extending bearing II, serving as the axis for a horizontally rotatable table I2 which preferably rests on a suitable ball bearing race IS. The bearing Il is hollow and extends upwardly above the table and to this upwardly extending portion is flxedly clamped a hollow coly umn I6 having a cantilever arm I5 extending suitable pressure fluid, such as compressed air,

and to this end the cylinder is provided with a conduit 2li for applyingdownward pressure and a conduit 2I for applying upward pressure. These conduits are lled into a Suitable control valve unit generally designated 22. A foot treadle 23 controls this valve unit, being capable in one position of communicating a source 24 of pressure fluid with conduit 2li, while venting conduit ZI,V and in another position of communicating conduity 2t with the source 24 while venting conduit 2li. In this latter position, air entering conduit 2i positively forces the piston I1 upwardly and atA the same time forcibly expels compressed air through the conduit 29. This expelled air is preferably connected Within the Valve unit to a conduit` 25 terminating in a nozzle 26 which is directed toward and located in the vicinity of the lower portion of one of the heel presses other than that located at the loading station about to be described. This expelled air is adapted to blow dust from the press toward which it is directed into a dustbin 2l located on an arm 28 which is attached to the frame Iii. Such dust is caused by rasping operations on the heel breast, etc., which are preferably carried out while the shoes are still in the machine, prior to aflixing the breast flap to the heel breast. Thus, in a preferred use of the machine about to be described in detail, a heel is clamped to the heel seat of a shoe in one of the presses at a loading station and the machine is then rotated to bring such press and its clamped shoe to a rasping station, where suitable smoothing operations such as rasping the heel breast joint are eiected by means of conventional or suitable rasping equipment (not shown). Cement may also be applied to the heel breast ap and/or to the heel breast at this rasp-l ing station, or at a succeeding station, as desired, and the press is moved further to a breast flap sticking station where the breast iiap is rolled or clamped against the heel breast while the shoe and heel are still under pressure in the clamp. Any suitable or conventional rolling or clamping device may be used for this step. The shoe may then be taken from the press machine, after the heel cement has set, and after the breast flap is located against and stuck to the heel breast.

A plurality of presses are mounted about the margin of the table, the number of presses being sufficient to permit cemented Work in any given press to set during a traverse between loading and unloading positions. Each press comprises a base 2S, which is rotatably mounted on a pivot 3! attached to the table l2. A spring pressed detent 3l is adapted to register with a depression in the surface of the table so as to tend to hold each press in the normal position shown in Fig. 1, while permitting turning of the press with respect to the table in order to facilitate handling of the work, as during loading, rasping, burnishing, breast flap laying, and like operations.

The press base 29 is provided with a slidable carriage 32, which is conned for sli-ding movement in guideways 35. A tiltable jack pin holder 34 is adjustably xed in carriage 53 by means of a pin 35 which may be selectively inserted in different sets of registering openings 35 and 3i through the carriage and pin holder respectively. As will be apparent from an inspection of Fig. 3, the pin holder may thus be mounted in different tilted positions with respect to the carriage to provide for different types of lasts. A last jack pin 33 is carried by the pin holder and is adapted to have the pin hole or thimble in the cone of a last seated thereover.

The under side of carriage 32 has a rack 39 af- Xed thereto in mesh with a pinion ill keyed for rotation with a shaft il which is journaled in the base 29. The outer end of this shaft has keyed thereto a control handle e2, equipped with an internal plunger i3 (Fig. Li) which abuts against one end of a spring pressed dog fill, that rides over a toothed plate i5 afxed to the press base. As will be apparent from the drawings, depression of plunger iii enables the operator to turn the handle 32 so as to slide the carriage in its guides, while the release of the plunger enables the spring for the dog fifi to urge the latter into locking relation with the teeth of plate l5 so as to hold the carriage in any chosen position.

A standard d@ extends upwardly from press base 29 and is bowed thereover so as to present a hollow ram journal i'i, located at its upper end, substantially directly over the pivot The ram I9 is slidably mounted in such journal and is given a normal spring bias upwardly by means of a compression spring 33, which acts between the journal ill and a head i9 on the ram. A seat member 5i? is pivotally suspended from the lower end of the ram in position to bear over the top lift of a heel. A set screw 5l provided with a hand wheel 52 is screwed into one side of the journal il in position to abut against a` friction plate 53 in order to lock the ram i9 in any given position.

Part way up the standard it there is provided a heel end abutment comprising a live rubber pad or block 5ft, carrie-d by an internally threaded sleeve 55, which is slidable in a hollow boss 55 formed integrally lin the press standard. An eX- ternally threaded spindle 5l is rotatably mounted in the upper end of such boss and is equipped with a hand wheel 58 by means of which it may be turned so as to screw the sleeve 55 and its associated heel end abutment into any chosen position.

The ram i9, it will be noted, is located substantially directly above the pivot 3B of each press and each of these pivots is located equidistantly from the axis of rotation of the table l2, so that the rams describe a fixed circular path, above which the pressure applying piston rod I3 is directly located. Thus, rotation of the table is adapted successively to bring the ram of each press beneath such rod regardless oi the relative position of such press with respect to its pivot 35. A detent for stopping the table with a pressI ram in registry with rod i8 is provided in the form of a pin 59, slidably mounted in the frame lil and in a hollow boss extending thereabove'. The upper end of pin 55E is adapted successively to enter into each oi a series of pin holes 5i, located in the under side of a circular track 52 provided beneath table l2. These holes are so positioned with reference to the press as to register with the pin 59 at such time as their respective press rams iS register with pressure rod i8. A spring 5s gives pin 59 a normal upward bias to rubbing contact with the under side of track 52 through means of a lever 54 having one end pivoted to the frame lll and its other end joined by means of a suitable loose motion connection to the lower portion of pin 59. AV

treadle 55 and link 55 are provided for depressing pin 5s and releasing the tablewhen desired.

Substantially directly beneath the pressure cylinder l5 is located a table support comprising a roller 6l, mounted in standards Sii, which in turn are mounted on and supported by the frame it. This enables pressure to be applied to the press without exerting undue strains lon the table bearing.

In operation, assuming the machine to be empty and the pressure piston i1 to be in its uppermost position, an operator stands facing the machine at the station directly below the pressure cylinder. He applies or activates cement between a lasted shoe and a heel which is to be afxed thereto and locates the shoe and heel on the jack 33. lThis insertion is facilitated by having the carriage 32 in its outermost position, the handle i2 beingin the lowered position shown in Fig. l so that the heel is clear of the lower portion of the ram, as also shown in that gure. The plunger 43 of `handle 42 is then depressed and the handle raised, sliding the carriage 32 back toward the standard d6 until the rear end of the heel is arrested by abutment 55 at which time the top lift of the heel will directly underlie seat 5@ on the ram (Fig. 2), the abutment 55 being suitably adjusted to eiTect this relationship for the particular type of heel being used. The operator then moves treadle 23 so as to apply iiuid pressure above the piston H and release the pressure therebelow, thus forcing the rod I8 downwardly into pressing relation with the ram i9 and forcing the latter against the heel, thus effecting a cushioned air pressing contact between the heel and shoe by the heel seat. When pressure thus has been applied, the set screw 5i is tightened suiiiciently to hol-d the ram in position after release from the pressure cylinder. The treadle 23 may then be moved so as to lift the piston l'l and rod I8 away from the press ram, at the same time expelling exhaust air through nozzle 2tso as to blow dust from a press locatedat a station beyond the rasping orflike equipment (not shown) which may suitably be located adjacent the table l2. The treadle 65 is then depressed, releasing the table and permitting it to be rotated either manually or by power means (not shown) until pin 59 engages in the next slot El on the under side of the table, at which time the loading and pressing operations are'repeated until the entire machine is filled. Subsequent operation of the machine will also involve unloading the press shoes, which will have set by the time they return to the loading station.

While the structure which hasl been described in detail above is a practical and preferred form of the invention, it should beunderstood that it is merely illustrative of the principles involved, and that various changes may be made without departing from the disclosed and claimed invention. Thus, for example, the rotatable table used for carrying the individual presses may, if desired, be replaced by any other suitable form of multiple press carrier, such as an elongate conveyor, a vertical wheel, or the like. Other suitable types of presses might'also be used in conjunction with the disclosed air-cushioned pressure applying means, if desired, and the latter may be located below the table if suitable connections to the presses are provided.

It will be seen that there has been provided an apparatus which is well suited to fulll its intended functions. Since certain changes may be made in the above construction and different embodiments. of the invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawing shall be interpreted as illustrative and not in a limiting sense.

vIt is also to be understood that the following claims are intended to cover all of the generic and specific features of the invention herein described, and all statements of the scope of the invention which, as a matter of language, might be said to fall therebetween.

Having described my invention, what I claim as new and desire to secure by Letters Patent is:

l. A heel pressing machine comprising, in combination, a movable carrier, a plurality of heel presses carried thereby, each press having means for supporting a lasted shoe and a ram for pressing a heel thereagainst, a xedly mounted iluid pressure cylinder, a piston in said cylinder having a downwardly projectingr rod, said table being rotatable successively to present said rams beneath said rod, control means for admitting uid into said cylinder to apply downward pressure to a ram located beneath said rod, and means for holding said ram in pressing relation against a heel.

2. A heel pressing machine comprising, in combination, a frame, a table rotatably mounted thereon, a plurality of heel presses carried by said table, each press having means for supporting a lasted shoe and a ram for pressing a heel thereagainst, a fluid pressure cylinder xedly mounted above said table, a piston in said cylinder having a downwardly projecting rod, said table being rotatable successively to present said rams beneath said rod, control means for admitting fluid into said cylinder to apply downward pressure to a ram located beneath said rod, and means for holding said ram in pressing relation against a heel.

3. A heel pressing machine comprising, in

combination, a frame, a table rotatably mounted thereon, a plurality of heel presses carried by said table, each press having means for supporting a lasted shoe and a ram for pressing a heel thereagainst, an arm xedly carried by said frame and extending above said table, a iiuid pressure cylinder mounted on said arm, a piston in said cylinder having a downwardly projecting rod, said table being rotatable successively to present said rams beneath said rod, a support on said frame beneath said cylinder engaging and supporting sai-d table, control means for admitting fluid into said cylinder to apply downward pressure to a ram located beneath said rod, and means for holding said ram in pressing relation against a heel.

4. A heel pressing machine comprising, in combination, a frame having a bearing thereon, a table rotatably mounted on said bearing, a plurality of heel presses carried by said table, each press having means for supporting a lasted shoe and a ram for pressing a heel thereagainst, an arm xedly carried by said frame and extending upwardly .from said bearing, a fluid pressure cylinder mounted on said arm, a piston in said cylinder having a downwardly projecting rod, said table being rotatable successively to present said rams beneath said rod, treadle operated valve means for admitting uid into said cylinder to apply downward pressure to a ram located beneath said rod, uid conduits between said valve means and cylinder and passiner through said bearing, and means for holding said ram in pressing relation against a heel.

5. A heel pressing machine comprising, in combination, a frame, a table rotatably mounted thereon, a plurality of heel presses carried by said table, air operated pressure cylinder means iixedly located with respect to said frame and adapted successively to apply pressure to said presses, and means for utilizing air released from said pressure cylinder means to blow dust from the vicinity of one of said presses.

6. A heel pressing machine comprising, in combination, a frame, a table rotatably mounted thereon, a plurality of heel presses carried by said table, each press having means for supporting a lasted shoe and a ram for pressing a heel thereagainst, a fluid pressure cylinder xedly mounted above said table, a piston in said cylinder having a downwardly projecting rod, said table being rotatable successively to present said rams beneath said rod, control means for admitting uid into said cylinder to apply downward pressure to a ram located beneath said rod, means for utilizing iiuid from said cylinder to blow dust from the vicinity of one of said presses, and means for holding said ram in pressing relation against a heel.

'7. A heel pressing machine comprising, in combination, a frame having a hollow bearing thereon, a table mounted for horizontal rotation about said bearing, a plurality of heel presses carried by said table, each press having means for supporting a lasted shoe and a ram for pressing a heel thereagainst, a hollow column xedly mounted on said bearing above said table, a cantilever arm eX- tending outwardly from said column, a fluid pressure cylinder mounted on said arm, a piston in said cylinder having a downwardly projecting rod, said table being rotatable successively to present said rams beneath said rod, treadle operated valve means for admitting fluid into said cylinder to apply downward pressure to a ram located beneath said rod, fluid conduits between said valve means and cylinder and passing through said bearing and column, and means for holding said ram in pressing relation against a heel.

8. A heel pressing machine comprising, in combination, a frame, a table horizontally rotatable thereon, a plurality of heel presses, each rotatably pivoted on said table, the pivots for said presses being equidistant from the axis of said table, means on each press for supporting a lasted shoe, a standard on each press, a ram slidably mounted in each standard and located for vertical movement over the pivot point of its respective press, a huid operated pressure cylinder xedly located above said table, a piston in said cylinder having a downwardly extending rod located directly above the path of movement of said rams, and control means for admitting fluid into said cylinder to apply downward pressure to a ram located beneath said rod.

9. A heel pressing machine comprising, in combination, a frame, a table horizontally rotatable thereon, a plurality of heel presses each rotatably pivoted on said table, the pivots for said presses being equidistant from the axis of said table, means on each press for supporting a lasted shoe, a standard on each press, a ram slidably mounted in each standard and located for vertical movement over the pivot point of its respective press, and a pressure applying means over said table ncluding an element located directly over the path of movement of said rams and successively movable into pressing relation therewith.

l0. A heel ailxing machine comprising, in combination, a base, a table rotatable thereon, a plurality of heel presses carried by said table, each press comprising means for holding a shoe and means for engaging the top lift of a heel or" said shoe, means located at a iixed station along said table for applying cushioned air pressure to said engaging means, and means for holding said engaging means in pressure applying relation against a heel.

11. In a heel pressing machine, the combination comprising a press base, a standard extending upwardly from said base, a ram slidably mounted on said standard, spring means normally holding said ram upwardly, shoe holding means movably mounted on said base to position a shoe heel beneath said ram, means for pushing said ram against such heel under pressure, and means for holding said ram in its pressure applying position.

12. In a heel pressing machine, the combination comprising a press base, a standard extending above said base, a ram slidably mounted on said standard, a last jack pin slidably mounted on said base, means for moving said pin with respect to said base to locate the heel of a shoe positioned thereon beneath said ram, and means for holding such pin in such position.

13. In a heel pressing machine, the combination comprising a press base, a standard extending above said base, a ram slidably mounted on said standard, a carriage slidably mounted on said base, a last jack pin on said carriage, a rack on said carri-age, a pinion meshed with said rack, an operating handle for rotating said pinion, and means for locking said handle in a selected position.

14. In a heel pressing machine, the combination comprising a press base, a standard extending above said base, a ram slidably mounted on said standard, a carriage slidably mounted on said base, a jack pin holder adjustably mounted on said carriage, a rack on said carriage, a pinion meshed with said rack, a swingable operating-handle for rotating said pinion, a locking dog carried by said handle, and a toothed plate carried by said press base in position to be engaged by said locking dog, and means for disengaging said dog and plate.

l5. In a heel pressing machine, the combination comprising a press base, a standard extending upwardly from said base, a ram slidably mounted on said standard, shoe holding means movably mounted on said base to bring the heel of a shoe positioned thereon beneath said ram,V

abutment means carried by said standard in position to arrest movement of said shoe when its heel is positioned beneath said ram, means for pushing said ram against such heel under pressure, means for looking said holding means, and means for holding said ram in its pressure applying position.

i6. I-Ieel aflixing apparatus comprising, in combination, a movable carrier, a plurality of heel presses mounted on said carrier, each press comprising means for holding a shoe and means for engaging the top lift of the heel of a shoe, means located at a fixed station along said carrier for applying cushioned air pressure to said engaging means, and means for holding said engaging means in pressure applying relation against a heel.

17. In a heel pressing machine, the combination comprising a press base, a standard extending above said base, a ram slidably mounted on said standard, shoe holding means movably mounted on said base to position-the heel of a shoe held thereby opposite said ram, means for fixing said shoe holding means in such position, means for pushing said ram against such heel under pressure, and means for holding such ram in its pressure applying position.

WILLIAM C. CARD, JR.

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