US1567669A - Shank skiver - Google Patents

Description

Dec. 29, 1925 1,567,669

' J. MUSACCHlA SHANK SKIVER Filed July 1924 2 sheets-Shefl- IIIH v INVENTOR iioefluaiacclllla WITNESS y MEM ATTORNEY l J. MUSACCHIA SHANK SKIVER Dec. 29,1925- 1,567,669

Filed July 23, 1924 2 Sheets-Sheet 2 m 56' P, 1 /////4 1 w W V INVENTO? M41811 Wrrqesszs 72 ,LWM V 6 ATTORNEY Patented Dec. 29, 1925.

UNITED STATES J OE MUSACGHIA, OF SACRAMENTO, CALIFORNIA.

SHANK SKIVER.

Application filed. July 23, 192 1.

To all whom it may concern:

Be it known that 1, Jon MUSACOHIA, a citizen of the United States, residing at Sacramento, in the county of Sacramento and State of California, have invented a new and useful Shank Skiver, of which the following is a specification.

This invention relates to a shank skiver, particularly adapted repairing trade for trimming the broken portion of the sole leather of old shoes preparatory to re-soling the same. It may also be used to advantage in skiving the new half sole before it is applied to the shoe.

The object of the invention is to provide a simple and practical device, operable mechanically to effect the above results neatly and quickly. It is so constructed that the shoe may be held manually underneath the cutter with the shank in proper position for trimming, thus avoiding the use of, or need for clamps. The carriage is ward preferably by manually operated means, and at one stroke the sole or shank is cleanly and neatly cut to the required shape.

In machines heretofore constructed for this purpose, it takes almost as much time to clamp the shoe properly in positionas it takes for a good shoemaker to trim it by hand. The present invention not only saves the time required to clamp the work in position, but does the trimming as neatly and accurately as can be done by more expensive and complicated machines.

The specific construction of the invention in its preferred form will be more fully explained in connection with the accompanying drawings forming a part of this specification.

In the drawings:

Figure 1 is a plan view of the invention.

, Figure 2 is a vertical section taken on the line 2-2 of Figure 1.

Figure 3 is a vertical section taken on the line 3-3 of Figure 2.

Figure 4; is a bottom plan view of a portion of the invention showing the adjusting mechanism.

Figure 5 is a detail sectional view of a ortion of the frame structure.

Figure 6 is a detail sectional view taken on the line 66 of Figure 5.

Referring in detail to the drawings, the invention comprises a casting 10, in the form to be used for the shoe brought for- 7 Serial No. 727,741.

of a table supported by suitable legs 11, and having a central longitudinal opening 12 traversed by a transverse web 13. Extending across the opening 12, at the for ward edge of the web 13, is a steel gage block 14., which is adapted to support the sole or shank in proper position to be acted upon by the trimming knife hereinafter specifically described. This block is preferably formed at its ends with depending flanges 15, having rearwardly extending perforated ears 16 integrally or otherwise secured thereto, which are connected by pivot pins or bolts forated ears 18 formed on the forwar edge of the web 13. The gage block 14, be tween the flanges 15, is wedge shaped with its edge disposed forwardly, and its upper surface corrugated, as shown at 19, and adapted to support the piece of leather to be trimmed, as shown in Figures 1 and 2. Pro vision is made for adjusting the block 14 about the pivot pins 17 to accord with the thickness of the leather to be trimmed, as

will be hereinafter more fully described.

The skiving knife 20 is secured by bolts 21 to a bar 22, extending transversely across the space 12. Slots 23 are formed in the rear portion of the knife 20 for receiving the bolts 21 so that the knife may be adjusted forwardly, and held in fixed relation to the bar by screws 25k in cooperation with the bolts 21. The bar 22 is integrally or otherwise secured to a carriage 25 resting on the surface of the table 10, and guided longitudinally thereof by cleats or flanges 26, which rest on blocks 27 suitably secured to the surface of the table, and are held thereon by bolts 28 or the like. Each side of the carriage 25 has a longitudinal rack bar 29 formed on its upper face and mesh ing with a pinion 30 carried by a transverse shaft 31, which is journaled in upright posts 32 secured to the sides of the table 10. The shaft 31 also has secured to each end another pinion 33, meshing with a similar pinion 34 secured to a drive shaft 35, also journaled in the posts 32, and provided at one end with a hand crank 36, by. means of which it may be rotated to advance or retract the carriage 25, and the skiving knife 20 carried thereby.

The carriage 25 is provided at each side with depending perforated ears 3?, which form bearings for an adjusting shaft 38, which is provided. at its outer end with a 17 to corresponding perhand wheel 39, and at its inner end with a cam block lO, having a plurality of flat faces ll at varying distances from the center of the shaft. As shown in the draw ings, the cam block is provided with six faces, which may be designated by digits, or other indicia, and the hand wheel 39 may be correspondingly designated. The cam blocks 4-0 are so arranged that any one of the faces 41 may be brought into supporting relation to the flange at the end of the gage block 14% to position the latter in accordance with the thickness of the leather to be trimmed. mark a may be provided on the table adjacent each of the hand wheels 39 for accurately indicating the proper adjustment.

Suitable means are provided for normally holding the gage block 1& in contact with the cam blocks 40. To this end, the central part of the web 13 has its upper face lower than the rest of the table 10, and is provided with overhanging flanges 4-2, forming opposed-longitudinal channels or guideways 43 in which is guided a slide 44. The front edge of this slide is normally in abutting relation to the rear face of the block 14. The rear end of the slide extends over a transverse bar so, integrally or otherwise secured to the table, and provided with rearwai'iilly extending bolts 46, which also extend through a depending flange 47 formed at the rear end of the slide at, and which are provided with expansile coiled springs 48 hearing against the rear face of the slide l4, and urging the slide forwardly to hold the gage block 1a in its adjusted position.

In the operation of the invention, the hand wheels 39 are first adjusted to bring the gage block into proper position, according to the thickness of the leather to be worked upon. The shoe or sole is held in one hand, and the piece to be trimmed is brought into proper position above the corrugated surface 19 of the gage block, as indicated in dotted lines in Figure The front portion of the web 13, between the ears 18, may be bevelled as shown at 4-9, so as to provide suflicient space for the shoe. lVith the shoe or sole thus held in one hand, the crank 36 is turned by the other hand to advance the carriage 25, whereby the knife is carried forwardly to trim the leather cleanly and neatly to the required shape by a single movement. Thus, in a few seconds a neat, clean cut ma Y e made for splicing. No time is lost in clamping the work in the machine, and yet even a novice may trim the eather as accurately as can be done on any machine.

While I have shown and described in detail the construction of the preferred form of the invention, it is to be understood that various modifications may be made in the various details thereof without departing being wedge shaped with sufficient open to accommodate the shoe while the front upon the upper surspace beneath the same upper and insole of a end of the shank rests face of the block, a carriage, a knife sup-- ported by the carriage, and means to advance the carriz aid knife to skive the front end of the shank when the latter is supported by the block.

2. A skiver for use in repairing shoes, comprising, in combination, a gage block pivotally mounted on a horizontal axis, said block being wedge shaped with suflicient space beneath the same to accommodatethe upper and insole of a shoe while the front portion of the shank rests upon the upper surface of the block, a carriage slidably mounted in front of the block, a knife supported on the carriage, means to advance the carriage in a direction to move the knife forwardly across the block, and means for adjusting the block about its pivot toward or away from the path of the knife in ac cordance with the thickness of the shank 3. A skiver for use in repairing shoes, comprising, in combination, a table having an opening therein, a gage block traversing said opening, a knife extending horizontal y across the opening above and in front of the block, a carriage on which the knife is supported, and means to advance the carriage in a direction to move said knife into shearing relation to the block, said opening being extensive enough to accommodate the upper and insole of a shoe while the front upon the upper surface of the block.

i. A skiver for use in repairing shoes, comprising, in combination, a table having an opening longitudinally thereof, a pivotally mounted gage block traversing said pening, a knife extending across the open ing in front of the block, a carriage on which the knife is supported, means to advance the carriage in a direction across the upper face of the block, said opening being sulliciently extensive to accommodate the upper and insole of a shoe beneath the block while the front portion of its shank rests upon the upper surface of the block, and means for adjusting the block about its pivot toward or away from the'path of the knife in accordance with the thickness of the shank.

5. A skiving machine, comprising,in com- "e in a direction-to cause portion of its shank rests bination, a table having an opening ther in, a gage block pivotally mounted on the table and traversing said opening, a cam shaft journaled at each side of the opening underneath the block and carrying a cam with a plurality of flat faces at dif ferent distances from the center, each shaft being rotatably adjustable to bring any one of the cam faces into supporting rela ion to the block to vary the position of the lat ter about its pivot, a carriage mounted in front of the block, a knife secured to the carriage, and means to advance the carriage in a direcion to move the knife into cooperative relation to the b ock.

A skiver for use in repairing shoes, comprising, in combination, a wedge shaped gage block with its converging faces meeting at the forward edge of the block, said block having depending flanges at its ends, means connected with the flanges and fori ing a pivotal support for the block permitting it to swing about a horizontal axis, the space beneath the flanges being sufficient to accommodate the upper and insole of a shoe while the forward portion of its shank rests upon the upper surface of the block, a knife, a carriage on which the knife is carried, means to advance the carriage to bring the knife into cooperative relation to the upper 'urface of the block to skive a shank supported thereon, and means to adjust the gage block about its axis to adapt it to the thickness of the shank.

7. A skiver for use in repairing shoes, comprising, in combination, a wedge shaped gage block pivotally supported at its lower rear edge on a horizontal with its converging faces meeting at the front of the block, a carriage having a knife thereon, means to advance the carriage to bring the knife into cooperative relation with the u aper face of the block, spaced cams on which the forward part of the gage block rests, the space between the cams and beneath the block being suflicient to accommodate the upper and insole of a shoe While the front portion of its shank rests upon the upper surface of the block, means for adjusting said cams so as to present supporting surfaces of different height to said gage block, and yieldable means bearing against the rear face of the gage block above its pivot to hold said gage block in contact with the cams.

8, A skiving machine, comprising, in combination, a table having a longitudinal opening therein, a gage block traversing said opening, a knife extending horizontally across the opening, a carriage by which the knife is supported, means for advancing the carriage in a direction to move the knife into shearing relation to the block, a cam shaft journaled at each side of the opening underneath the gage block and carrying a cam with a plurality of flat faces at different distances from the center, each shaft being rotatably ustable to bring any one of the cam faces into supporting relation to the block to vary the position of the latter about its pivot, and a slide yieldably held in engagement with said gage block and operable to hold the latter normally in contact with the cams.

9. A skiving machine, comprising, in combination, a table having a longitudinal opening therein, a gage block traversing said opening, a knife extending horizontally across the opening, a carriage by which the knife is supp rted, means for advancing the carriage in a direction to move the knife into shearing relation to the block, a cam shaft journaled at each side of the opening underneath the gage block and carrying a cam with a plurality of flat faces at different distances from the center, each shaft being rotatably adjustable to bring any one of the cam faces into supporting relation to the block to vary the position of the latter about its pivot.

In testimony that I claim the foregoing as my own, I have hereto a'liixed my signature.

JOE MUSAGGHIA.

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