US438002A - Leather-skiver - Google Patents

Description

(N0 Model.)

' J. KIRWAN.

LEATHER SKIVER.

N0. 430,002. Patented 001;. 7, 1000.

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PATENT OFFICE.

JOHN /KIRl/VAN, OF ASBURY PARK, NEV JERSEY..

LEATHER-SKIVER.

SPECIFICATION forming part of Letters Patent 110.438,002, dated October 7, 1890'.

Application led January 22, 1890. Serial No. 337,716. (No model.)

.To all whom t may concern,.-

Beit known that I, JOHN KIRWAN, of Asbury Park, in the county of Monmouth and State of New .Tersey, have invented a new and Improved Leather-Skiver, of which the following is a full, clear, and exact description.

The invention relates to tools for thinning or skiving leather, and has for its object to provide a new and improved skiver, which is simple and durable in construction, readily adjusted, and easily handled for skiving the edges of soles or thinning welts to an even thickness throughout.

The invention consists of certain parts and details and combinations of the same, as will be hereinafter fully described, and then pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure l is a front elevation of the improvement as applied for skiving a sole. Fig 2 is a side elevation of the same. Fig. 3 is a sectional side elevation of the same. Fig. 4 is a transverse section of the saine on the line :r .fr of Fig. 3. Fig. 5 is a sectional plan view of the same on the line 'y y of Fig. 2. Fig. 6 is a front View of the improvement as used for thinning welts, and Fig. 7 is a side elevation of an attachment for thinning welts.

The improved leather skiver is provided with a suitable handle A, on the lower end of which is secured a casing B, provided with two parallel side plates B and B2, in thelower ends of which are formed opposite grooves C2, in which is fitted a horizontally-extending knife O slightly7 curved longitudinally and provided with a cutting-edge O at the front end. One side of the knife O is curved upward at C2, as is plainly shown at Fig. 4, so that when the tool is used no ridge is formed on the part thinned. Y

1n front of the cutting-edge O of the knife C and above it is held an arm D for regulating the thickness of the shaving to be cut by the knife C, said arm comprising a transversely-extending arm D similar in shape to the knife O and secured on the shank D2, mounted to slide verticallyr in a groove B4, formed in the front B3 of the casing B.

The shank D2 is provided with a vertical slot D2, through which. passes a screw D4, screwing in the front B3 of the casing B and serving to lock the arm D in place after it is adj usted to the desired thickness of the shaving to be made. In the shank D2 is also arranged a transversely-extending slot D5, engaged by the head F. of the screw E', said head being held eccentrioally on the screw, so that when the latter is turned the head moves the shank D2 up or down, according to the direction in which the screw is turned.

It is understood that the screw D4 is loosened when it is desirable to adjust the arm D in relation to the knife O by means of the eccentric head E. Vhen the adjustment has been made, the screw D4 is screwed up so as to clamp the arm D securely to the casing B. The head F. is-slotted in the usual manner, so that the operator by using a screw-driver can conveniently turn the screw E to adjust the arm D.

On the outer side B2 of the casing B is arranged to slide vertically a bar F, which serves to regulate the depth of the cut to be made upon the sole operated upon. The bar F is rounded at its lower end and is mounted to slide in a vertically-extending slot B5, formed in the side B2 of the casing B. The bar F is provided with a slot F', through which passes the shank of abolt F2, screwing in the side B2 and serving` to clamp the bar F in y place after it is adjusted to the desired position with relation to the knife O.

On one side of the bar F is formed the rack F4 in mesh with a gear-wheel G, secured on a y stud G', mounted to turn in the side B2 of the casing. A knob or head G2 is formed on the outer end of the stud G for conveniently turning the stud and the gear-wheel Gin order to move the bar F up or down when the screw F3 is slackened up, so as to adjust the said bar F with relation to the knife according to the depth of the cut to be made on the sole.

On the lower end of the bar F is arranged a graduation F5, adapted toindicate on aline B6, formed on the outside of the side B2 of the casing, saidgraduat-ion indicating by inches and subdivisions of the same the depth of ico the cut to be made. The line B6 on the side B2 is in line with the cutting-edge C of the knife C.

In order to conveniently slide the knife C into the grooves C3, formed in the slides B and B2 of the casing, the front B3 of the casing is slotted, as is plainly shown in Fig. 5, and the sides B and B2 are connected with each other by a bolt H, which when loosened permits the sides B and B2 to spread apart to easily remove the knife C from the grooves C3 or insert it in the same. When the knife is in the desired position, the screw H is screwed up, so as to draw the two sides toward each other, thus securely clamping the knife C between the sides.

When the tool is used for thinning Welts, the bar F is provided on its lower end with a transversely-extending arm F6, located below the arm D and below the cutting-edge of the knife C, so that one end of a welt can be passed through the opening made between the knife and the arm F6, and then theinner end of the welt is taken hold of by the operator, who pulls the welt through, and the cuttingedge of the knife thus cuts the welt to an even thickness to correspond with the distance between the cutting-edge of the knife and the inner surface of the arm FG.

The tool is used as follows for thinning shoesoles: The sole J is preferably secured on a metallic plate K, held on a board or bench, and then the operator takes the tool in one hand, adjusts the arm F to the desired thickness of the leather to be thinned, and also adjusts the arm D to make a shaving of a certain thickness, according to the leather to be operated on. The operator then places the tool with the bar F against the outer edge of the sole J and pushes the tool forward, so that the cutting-edge C of the knife C cuts a shaving from the top of the sole J. By thus drawing the tool all around the sole J a shaving is cut o at the outer edge of the same, so that this outer edge is thinned, while the middle part of the sole remains of the ordinary thickness. The tool is pushed around the sole as many times as necessary until the lower end of the bar F comes in contact with the projecting metallic plate K, so that further cutting of the knife C into the sole is prevented.

It is to be understood that the outer edges of the soles are thinned for the purpose of giving the sole a lighter appearance when applied to the shoe, as only the outer edge is visible when the shoe is worn.

When the operator desires to thin a welt to a regular thickness, he uses the bar F, having the transverse arm F6 and preferably holds the tool upside down, and then draws the welt through between the knife C and the arm F, as previously described.

Thus it will be seen that by this tool a sole can be quickly thinned at its outer edge to any desired thickness without requiring the operator to exercise any skill.

It will be understood that the several parts can be very quickly adj usted, the knife C can be easily removed for sharpening or other purposes, and the knife having the upturned edge prevents the formation of a ridge on the inner edge of the sole.

Having thus fully described my invention, I claim as new and desire to secure byLetters Patentl. In a leather-skiver, the combination, with a casing, of a knife held in the sides of the said casing and provided with a cutting-edge and an upwardly-bent side, a bar `held adj ustably in the said casing on the opposite side of the upwardly-bent side of the said knife, and a transversely extending arm formed on said bar and` held below the cutting-edge of the said knife, substantiallyas shown and described.

2. In a leather-skiver, the combination, with l a casing and a knife held therein, of an arm held vertically adjustable on the said casing above and in front of the said knife, and an eccentric screw screwing in the said casing and engaging with its head, and a slot in the said arm to Inove the same up or down, substantially as shown and described.

3. In a leather-skiver, the combination, with a casing and a knife held therein, of an arm held vertically adjustable on the said casing above and in front of the said knife, an eccentric screw screwing in the said casing and engaging `with its head a slot in the said arm to move the same up or down, and a second screw passing through a vertical slot in the said arm and serving to lock the arm to the casing, substantially as shown and described.

4. In a leather-skiver, the combination, with a casing and a knife held therein, of a bar mounted to slide in one side of the said casing and provided with a rack, a gear-wheel mounted to turn in the said casing and in mesh with the said rack, and means, substantially as described, for turning the said gearwheel to raise and lower the said bar, substantially as shown and described.

JOHN KIRWAN. Witnesses: Y

JOHN HUBBARD, TURIs V. HENDRIoKsoN.

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