US1707510A - Shoemaking apparatus - Google Patents

Description

April 2, 1929. H.' M. coLDlTz SHE MAKING' APPARATUS Filed June 8, 1927 f... Wp (filo lfzew.

Patented Apr. 2, 1929.

UNITED STATES o 1,707,510 PATENT. oFFlcE.

HEINRICH MAXCOIiDITZ, I DRESDEN, GERMANY.

. l SHOEUAKING APPARATUS.

1 Application mea June is,

and durable cement, such for examplefas a/ solution of celluloid or the like and the maintenance of intimate contact between the parts to be connected for a period suicient to permit the cement to set thoroughly. This process is highly advantageous in repairing shoes byl reason of its ease and simplicity,l but repair work is commonly done in the home or in relatively 'small cobbling shops and as most of the presses at present available are complicated and expensive, this process 'of repair has notXbeen adopted as widely as could be desired. Accordingly the present invention has for lits object the provision of a press capable of applying the desired degree of pressure for attaching the sole to a shoe, in accordance with the above described process, and whicha is simple in construction and mode of operationand which can be sold at a reasonable price.

With the above objectinl view I have devised a process embodying the features disclosed by way of example in the accompanying drawings in which,

Fig, 1 is a plan view of the frame and bed plate of the press, omitting 4the resilient pad and the pressurel applying yoke;

Fig. 2 is a fragmentary side elevation of the press, showing the yoke in operative position and indicating a shoein broken lines;

` Fig. 3'. is a fragmentary vertical section d substantially o'n the line 3-3 of Fig. 1, show- 40 ing the yoke in operative position; and

l, Fig. 4 is a vertical section substantially on the line 4--4 of Fig. 2.

Referring to the drawings the press coim-l prises a frame 1 which may conveniently. made of cast iron or steel and'which is pref-v erably provided with an upstanding peripheral rim 2 encircling a cavity 3 adapted to receive the forepart of the shoe which is to be provided with a sole. Within this cavity I arrange a bed plate upon which .the shoe is supported during the sole-applying operation. This bed plate comprises a centra part 4, preferably integral with the frame, and having the upper surface 4a. To the front and rear of this central part 4, the bed plate of the frame is provided with webs 5 1927. seria1N.197,5o4..

'and 6 (Fig. 3) connecting the part 4 with the ends ofthe frame.` The parts 5 and 6 are preferably disposed somewhat below the part 4 and at'their outer ends are furnished with bosses or thickened portions provided' with screw-threaded openings for reception of the adjusting screws 7 and 8. The rear en d of the frame may if desired be provided with a transverse leg or legs 1a and as here illustrated the forward end ofthe'frame is supported upon the lower end of the adjust- `ing screw 7. I contemplate however that aleg or legs similar to the leg 1a may be prolvided at the forward end of the frame if desired.

The bed plate also comprises a movable front part 9 and a movable rear part 10. The parts 9 and 10 are preferably hinged to the central part 4 by means of hinge members l1 and 12. These hinge members may conveniently consist of strips of leather or the like, or if desired the parts 9 and 10 may Abe united to the frame by means of metallic hinges, pivots or equivalent devices. The parts 9 and 10 may be of metal, wood'or any suitable material having the necessary rigidity and strength and as here shown the rear member 10=is preferably angular so that its rear portion inclines upwardly with respect to its forward portion. The `parts 9 and 10 rest upon the adjusting screws 7 and 8 respectively and by turning these screwsthe inclination of the parts 9 and 10 with respect to the central part ofthe bed plate may be varied independently of one another so as to v accommodate the bed plate to shoes of dierent sizes and longitudinal curvature. Under, all ordinary circumstances the bed plate is concave in a front to rear direction by reason of the inclination of the parts 9 and 10 relating to the ,central part 4. It is also concave transversely, the central part 4 of the bed .plate-being transversely concave, as shown in be Fig. 4, and the parts 9 and 10 also being concave in this direction if desired,

The bed plate comprising the central part 4 and the movable end parts 9 and 10 preferably supports a thick resilient pad 14 comprising one or more layers of rubber or other suitable material adapted .to conformnclosely to the under surfacelo't the shoe sole. This 1 pad may, if desired, have a molded upper surface and be provided with upstanding humps or projections 15 at its rear part adapted to engage the shank portion of the shoe.

The frame 1 is provided with downwardly directed anges 16 and 17 in its opposite sides in the region of the fixed bed plate member 4 and these flanges are furnished with elongate substantially horizontal channels 18 and 19 in their outer surfaces respectively.. The upper walls of these channelsl are preferably inclined inwardly and upwardly so as to pro- 'duce overhanging beveled ribs or flanges 20' and 21 respectively. The lower walls of these guide channels may conveniently be .formed by attaching plates 22 and 23 to the lower edges of the flanges 16 and 17.

The press also comprises a yoke 24 having spaced depending legs 25 and 26 which straddle the frame and bed plate. The leg 25 is l. provided at. its lower end with an inwardly directed lug 27 engaging the channel 18 while the leg 26 1s provided with `an inwardly di- 28 at its lower end engaging the 4the lower wall of the corresponding guidegroove. The upper surface of each lug is y likewise of arcuate curvature, preferably of greater radius than the lower surface 29, and 1s beveled as indicated at 30 to fit snugly against the beveled upper wall of the corresponding channel. The lugs 27 and 28 are free to move longitudinally of their respective channels and may also rock or swingJ within the channels.

The upper or central part of the yoke 24 is provided with a screw-threaded bore for the reception of a pressure-applying screw 31 having a handle 32 and a pressure-applying -pad 33 at its lower end, such pad preferably emg swixueled as indicatedy at 34 to the In using this press a last is first inserted in the shoe, and the shoe indicated at 35, the sole 36 cemented thereto by means of suitable cement, is set down .upon the bed plateV of the press and the ends 9 and 10 are adjusted in accordance with the size and curvature of the shoe until the pad of the bed plate conyforms closely to the shoe sole. It is understood7 of course that before placing the shoe upon the bed plate the screw 31 will have been retraced to provide sufficient space between the pad 33 for the introduction of the shoe. The entire yoke 24 is now moved endwise, the lugs 27 and 28 sliding in their respective guide grooves until the pad 33 is positioned at-the proper point to engage the forepart of the shoe upper. The yoke may now be rocked so as to cause the axis ofthe screw 31 to assume the desired direction and the screw 31 is then turned by means ofthe handle 33 to apply pressure to the shoe.' The tendency of the yoke to shift during the application of this pressure when the pressure is other than vertical, is substantially overcomeA by the action ofwedge-like surfaces 30 of the lugs 27 and 28 engaging the inclined upper walls of the guide channels.

The shoe is allowed to remain under pressure in the press until the cement has..thor oughly set, whereupon the screw 3l is retracted suiliciently topermit removal of the shoe.

While I h'ave shown one desirable embodiment of the invention herein Iy wish it to be' understood that-I am not to be restricted to the-specific details of construction herein'illustrated or to materials above referred to as desirable for making the several parts or to the exact dimensions or relative proportions of parts herein referred to except as defined by the claims.

I claim: j

1. A sole cementing press having a frame, a bed plate carriedthereby, said frame having guide channels at its opposite sides, a yoke having spaced legs, a lug carried by each leg, said lugs engaging and being movable longitudinally of the respective guide channels, and a pressure device carried by the yoke, the

yoke being-free to swing about a transverse` axis defined by the lugs.

2. A sole cementing press having a frame, a bed plate carried thereby, said frame having elongate guide channels at its opposite sides, a yoke having spaced legs straddling the frame, a lug providedwith an arcuate peripheral surface projectlng inwardly from each leg of the yoke into the adjacent guide channel, said lugsl providing rockers about which the yoke may swing, and a pressureapplying screw carried by the yoke.

3. A sole cementing press having a frame,

a bed plate carried thereby, said frame hav-` ing elongateguide channels at its opposite sides, the upper walls of said channels being inwardly and upwardly inclined, and a yoke having legs straddling the bed plate, each leg having an'inwardly projecting lug adjacent to its lower end, said lugs projecting into the adjacent guide channels and having beveled upper surfaces engaging the inclined upper walls of the respective channels.

4. A sole cementing press having a frame, a bed plate carriedthei'eby, said. frame having elongate guide channels at its opposite sides, the .upper walls of said channels being 4inwardly and upwardly inclined, and a yoke having legs straddling the bed plate, each leg having a projecting lug -adjacent its, lower end, said lugs projecting into the adjacent guide channels, each lug havingtan arcuate upper surface beveled to fit against the inclined upper wall of its respective groove and forming rockers about which the yoke'may swing, and a pressure-applying device carried by the yoke. Y i

5. A sole cementing press having a frame', a bed plate carried thereby, said frame having elongate-guide grooves at its opposite sides, the grooves having upper and lower walls, and a yoke straddling the frame, said yoke having lugs projecting inwardly into the respective grooves, each lug having arcuate upper and lower surfaces engaging the upper and lower walls respectively of the groove, said lugs being movable longitudinally of the grooves, and a pressure-applying device carried by the yoke.

6. A shoe sole cementing press comprising a frame and a bed plate carried thereby, the bed plate being concave both transversely and from the front to rear, said bed plate comprising a fixed central part and movable front and rear parts, independent adjusting screws for. adjusting front and rear parts relatively to the central part, one at least of said screws forming a supporting lug for the frame, the frame having guide channels at its opposite sides, a

pressure applying yoke having spaced legs straddling the frame, each leg having u. lug projecting into the adjacent channel oi' the frame, the lugs being free toslide in the channels and constituting rockers about which the yoke can swing, and a pressure applying screw carred by the yoke, said screw supporting a pad for engagement with the fore part of a shoe resting on the bed plate.

Signed by me at Dresden, Germany, tenth day of May, 1927.

HEINRICH MAX 'coLDrra this

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