US3171147A - Shoe repair machine - Google Patents

Description

March 2, 1965 o. v. FRIDAY 3,171,147

SHOE REPAIR MACHINE- Filed Jan. 22, 1964 2 Sheets-Sheet 1 Fig. 2

Fig. 50 32/ 0100 V. Friday INVENTOR.

March 2, 1965 o. v. FRIDAY SHOE REPAIR MACHINE 2 Sheets-Sheet 2 Filed Jan. 22, 1964 0/00 V. Friday 1N VliN 7 0 R.

BY 94%., 8m

United States Patent 3,171,147 SHOE REPAIR MACHINE (Blon V. Friday, 315 Dodson St., Midland, Tex assignor of fifty percent to Thomas J. Friday, Midland, Tex. Filed Jan. 22, 1964, Ser. No. 339,463 6 Claims. (til. 1250.5)

The instant invention is generally concerned with the art of shoe repairing, and is more particularly directed toward a machine specifically designed for the removal of heel lifts and heel pins from the heels of womens shoes such as will be necessary, for example, after the lift has become worn.

While it is appreciated that various types of machines have been designed for removing the combined lifts and pins, these machines are generally quite complex, both in structure and in operation requiring several separate steps in order to effect the pin removal.

It is a primary object of the instant invention to provide a lift and pin removing device wherein only a single operation is required, after placing the shoe on the device, in order to effect both the grasping and the removing of the lift and pin.

It is another highly significant object of the instant invention to provide such a device wherein a simple construction is involved requiring no complex mecharical parts and providing almost unlimited trouble-free service.

Furthermore, it is an object of the instant invention to rovide a lift and pin removing device which can automatically accommodate a wide range of different size lifts.

In addition, it is an object of the instant invention to provide a pin pulling device which eliminates any difiiculty associated with the pulling of the pin, and does so in a manner which in no way damages the heel itself, this being a particularly troublesome problem.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

FIGURE 1 is a perspective view of the device of the instant invention with a womans shoe positioned therein;

FIGURE 2 is an enlarged front elevational view of the device;

FIGURE 3 is a vertical cross-sectional View taken substantially on a plane passing along line 33 in FIG- URE 2;

FIGURE 4 is an enlarged partial sectional View similar to the upper portion of FIG. 3 illustrating the orientation of the various elements during the pulling operation; and

FIGURE 5 is a cross-sectional view taken substantially on a plane passing along line 5-5 in FIGURE 3.

Referring now more specifically to the drawings, reference numeral is used to generally designate the device of the instant invention. This device 10, as noted supra, is specifically designed for effecting a removal of a combined lift 12 and pin 14 from the normally long tapered heel 16 of a womans shoe 18.

The device 10 consists basically of a flat base 2%), which will be secured by any suitable means to a rigid supporting surface 22, a vertically elongated stand 24, clamping jaws 26 and 28, and an operating handle 30.

The stand 24 includes two elongated parallel spaced side plates 32 having their lower ends rigidly affixed to the base at one edge thereof, these plates 32 being fixedly interconnected by a backplate 34 extending from the upper edge of the side plates 32 toa point spaced upwardly from the base 20 a sufiicient distance so as to accommodate the handle 3% in its uppermost relaxed position, the handle 3@, as will be appreciated from the draw ings, projecting between the side plates 32.

A shoe rest is provided at the upper end of the stand 24 by welding a cylindrical U-shaped rod 36 to the upper end of the stand and covering both the rod 36 and the upper end of the stand 24 with a suitable padding 38 of leather or cloth so as to receive the heel 16 of a shoe 18' and prevent damage thereto while the extracting of the pin 14 is taking place. It will of course be appreciated that the space between the side plates 32 is such so as to gradually engage the tapered heel 16 as the shoe is positioned with the bottom or lift end of the heel 16 projecting downwardly between the side plates 32 and between the jaws 26 and 28.

The jaw 26 is formed integrally with the upper end of an elongated arm 4%. The arm 48, as will be appreciated from the the drawings, is located between the side plates 32 and maintained in its uppermost or relaxed position by an elongated tension spring 42 having the lower end 4 thereof fixed to the lower end of the arm 40 and the upper end 46 thereof engaged about a transversely extending pin 48 secured at opposite ends thereof to the side plates 32 at a point substantially above the lower end of the arm 40. Upward movement of the arm 40 can be limited in any suitable manner. For example, such movement will normally be limited by the collapsed spring 42 as will be appreciated from a comparison of FIGURE 3 and FIGURE 4.

The second jaw, jaw 28, is integrally formed witha relatively short arm 50 positioned in facing relationship to the arm ll). The arm 50 is mounted, and the arms 4% and 5d are interconnected by a pair of flat bars 52, one on each side of the arms 4% and Si and pins 54 pivotally mounting the arms 46 and Ed on the plates 52. In addition, supported by the bars 52 and located between corresponding concave portions on the inner edges of the arms 4i) and Si is a bearing 56 which guides and stabilizes the jaws during the movement thereof as shall be described presently.

The lower portion of the arm 5i}, below the bars 52, has the inner or facing edge thereof concavely formed so as to present a smooth camming surface 58. A camming roller 60 is rotatably mounted at the outer end of a pair of roller arms 62 which in turn have the inner ends thereof pivotaily secured to the arm 40 at a point at or just below the lower end of the arm 59. The roller 60, as will be appreciated from FIGS. 3 and 4, engages against the camming surface 58 and, as the roller 60 moves downwardly, effects an outward movement of the portion of the arm 5t) below the pin 54 and a corresponding inward or clamping movement of the jaw 28 toward the jaw 26 thereby tightly confining a heel lift 12 there, between, these jaws 26 and 28 preferably being provided with serrations or gripping teeth as illustrated.

The downward movement of the camming roller 60 is effected by a downward moving of the handle 36 through two elongated links 64 pivotally engaged with the handle 30 at one end and with the roller 60 at the other end, these links 64 being slightly arched so as to clear the pin 48 while still maintaining substantially a directly vertical pull on the roller 60. As the roller 66 moves downwardly, the jaw 2% is brought into clamping engagement with the lift 12. As soon as a substantial grip is obtained on the lift 12, the resistance between the camming roller 60 and the camming surface 58 reaches a point where further movement of the roller relative to the surface 58 is prevented, at which time both arms 40 and 50 move downwardly against the resistance of the spring 42 thereby drawing the lift 12 and pin 14 vertically downward away from the heel 16 held within the rest at the top of the stand 24. As will be appreciated, a substantial range of different width lifts 12 can be accommodated automatically with the camming movement of the roller 60 continuing until the resistance to the clamping movement of the jaw 28 becomes greater than the force of the spring 42, at which time the arms move downwardly and extract the In order to introduce additional stability into the de vice, if so desired, the lower portion of the arm 40, this portion being generally indicated by reference numeral 66, can be thickened or widened so as to slidably engage the side plates 32. However, inasmuch as the vertical pull of the arms 40 and Stl is substantially vertical, the spring 42 is itself deemed sufficient so as to maintain the substantially freely floating arms properly orientated during the extracting operation.

The lever or handle 3t) is pivotally mounted at its lower end between vertically projecting ears d8 secured to the base 20 and having a mounting shaft '70 extending therethrough and maintained in position by a spring clip 72 which can be easily opened by compressing the crossed legs thereof. An elongated tension spring 74 is pivotally engaged, through a yoke '76, to the handle 39 forward of the ears 68 and to the rear of the stand 24, the upper end of this spring 74 being engaged with a rigid pin projecting rearwardly from the oaclrplate 34. Thi spring .74, as will be recognized from the drawings, is used to maintain the handle 36 in its raised or at rest position in a manner so as to maintain the camming roller 66 in its raised disengaged position so as to allow for an opening of the jaw 28 relative to the jaw 2d.

As will be appreciated from the detailed description supra, the device of the instant invention provides a structurally unique device for extracting both the lift and heel pin' from a womans shoe with a single movement of the handle of the device effecting both an automatic clamping of the lift and a withdrawal of the lift and pin from the heel, this device automatically compensating for variations in lift sizes. The device, while effectively performing'its function, contains few moving parts and substantially no source of potential difiiculties even over extremely long periods of use.

The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly all suitable modifications and equivalents may be resorted to, falling within the scope of the invention as claimed:

What is claimed as new is as follows:

1. A lift and heel pin removing device comprising a vertical stand, a heel rest at the upper end of the stand, an elongated arm vertically slidable within said stand, spring means biasing said arm upwardly, a jaw on the upper end of said arm located below and in alignment with said rest, a second arm generally parallel to said first arm, a second jaw on the upper end of said second arm aligned with the first jaw, means below the jaws pivotally mounting said second arm on said first arm, camming means on said arms below the means pivotally mounting the second arm for pivoting the second jaw toward the first jaw, a handle means connected to said camming means d. for effecting the movement thereof, movement of the camming means relative to the arms ceasing upon the jaws encountering a resistance greater than the biasing force of the spring means, said handle means subsequently causing a simultaneous movement of both arms.

2. The device of claim 1 wherein said camming means consists of a camming member pivotally mounted on the first arm and engaged against the facing edge of the second arm.

3. A lift and heel pin removing device comprising a ertical stand, a heel rest at the upper end of the stand,

an elongated arm vertically slidable within said stand, spring means engaged between the stand and the arm biasing said arm upward, a jaw on the upper end of said arm below said heel rest, a second arm generally parallel to said first arm, a second jaw on the upper end of the second arm aligned with the first jaw, means below the jaws pivotally mounting said second arm on the first arm, a concave edge on said second arm below the last-mentioned means, a camming member pivotally mounted on said first arm and engageable with said concave edge upon a downward pivoting thereof so as to pivotally move the second jaw toward the first jaw, and vertically movable handle means engaged with said camming member for effecting a downward pivoting thereof, said handle means also effecting a simultaneous downward movement of both arms upon the second jaw encountering a resistive force greater than the biasing force of the spring means.

4. The device of claim 3 wherein said handle means includes an upwardly inclined lever extending through said stand with its lower end pivotally mounted remote from said stand, and rigid link means pivotally secured to the camming member and to the lever at a point sub stantially in vertical alignment with the camming member.

5. The device of claim 4 including spring means resiliently biasing said lever into its upward inclined position and, through the rigid link means, the camming member into its upper position.

6. A lift and heel pin removing device comprising a vertical stand, a heel rest on the upper end of the stand, a pair of lift gripping jaws mounted within the stand below the rest and in alignment therewith, single means for effecting a grippingmovement of one jaw toward the other and a subsequent downward movement of both jaws, and spring means biasing said jaws upwardly, said spring means restraining said jaws against downward movement until a substantial gripping force is developed between the jaws.

References Cited by the Examiner UNITED STATES PATENTS 480,974 8/92 Spencer 254-114 2,992,445 7/61 Nelson 12-50.5 3,069,707 12/62 Harper 12-505 3,083,385 4/63 Chafin et a1. 12-50.5

FOREIGN PATENTS 904,534 8/62 Great Britain.

JORDAN FRANKLIN, Primary Examiner.

Claims (1)

1. A LIFT AND HEEL PIN REMOVING DEVICE COMPRISING A VERTICAL STAND, A HEEL REST AT THE UPPER END OF THE STAND AND ELONGATED ARM VERTICALLY SLIDABLE WITHIN SAID STAND, SPRING MEANS BIASING SAID ARM UPWARDLY, A JAW ON THE UPPER END OF SAID ARM LOCATED BELOW AND IN ALIGNMENT WITH SAID REST, A SECOND ARM GENERALLY PARALLEL TO SAID FIRST ARM, A SECOND JAW ON THE UPPER END OF SAID SECOND ARM ALIGNED WITH THE FIRST JAW, MEANS BELOW THE JAWS PIVOTALLY MOUNTING SAID SECOND ARM ON SAID FIRST ARM, CAMMING

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