US776967A - Sharpener for shears. - Google Patents

Description

UNITED STATES Patented December 6, 1904.

PATENT OEEICE.

JAMES H. VAN TASSEL AND JAMES M. THORNTON, OF ELMIRA, NFV YORK.

SHARPENER FOR SHEARS.

SPECIFICATION forming part of Letters Patent No. 776,967, dated December 6, 1904.

Application led May 13, 1.904. Serial No. 208,580. (No model.)

To all whom, it may concern.'

Be it known that we, JAMEs H. VAN TAssEL and J AMES MTHOENTON, citizens of the United States, residing at Elmira, in the county of Ohemung and State of New York, have invented new and useful Improvements in Sharpeners for Shears, of which the following' is a specification.

Our invention relates to Sharpeners for shears or scissors; and one of the objects of the same is to provide a device of comparatively simple and inexpensive construction which may be successfully operated by an unskilled or inexperienced person.

Another object is to provide a shear-sharpener for use by barbers, dressmakers, and for household use which will not readily get out of order and which can be quickly and easily adjusted to grind any desired bevel on the blades of a pair of scissors or shears by an unskilled operator.

These objects are attained by means of the device illustrated in the accompanying' drawings, in which- Figure 1 is a perspective view of a shear- Sharpener made in accordance with our invention. Fig. 2 is a cross-sectional view of the same on the line 1 1, Fig. 1. Fig'. 3 is a detail sectional view of the blade-clamp. Fig. 4 isa detail section of the bevel-adjustment means. Fig. 5 is a detail view illustrating the means which we use for holding' the grinding-stone or hone in place. Fig. 6 is a detail view of one of the adjusting-screws. Fig'. 7 is a similar View of another adjusting-screw.

Like numerals of reference designate like parts wherever they occur in the different views of the drawings.

The numeral 1 designates a base, upon which is mounted a metal plate 2, having its side edges bent upward and inward to form a slideway 3 for the blade-clamp 4. A grindingstone or hone 5 is secured to the base by means of the metal stop 6, provided with ears 7, bearing against one end of the grindstone or hone, said stop being' secured in place by screws 8, the opposite end of the stone having a holding' device comprising' a plate 9, bearing at one end against the stone, while the other end is provided with a toe 10, inserted in a small opening' in the plate 2. A binding-screw 11 secures the holding' device and the stone in place, as shown in Fig'. 5.

The sliding clamp 1 comprises a plate 12, having a horizontal upper surface and downwardly-extending side portions 13, the terminal edges of which are bent outward to form feet 14k,- which slide in the way 3. A slot 15 extends diagonally across the horizontal portion of the clamp 11. A plate 16, secured by hinges 17 near one edge of the slot 15, is adjustable to give the required bevel tothe shearblade by means of a set-screw 18 passing through a bracket 19, secured to the plate 2, one end of said set-screw being seated in a cross-bar 20, extending' between the ears 21, projected backward from the plate 16. The set-screw 18 is fitted to turn freely within the cross-bar 20, and the threads of the screw work within the threaded opening' in the bracket 19. (See Fig. l.)

The blade 22 of the shears is held in place by a clamp comprising a rod 23, having asuitably-shaped lower end 24 to bear against the side and top of the blade, said rod being sccured to or formed with a rod 25, encircled by a spring 26. A bracket 27 secured to thebase has an ear 28 at its upper end, and a cap-nut 29 is threaded to lit an opening in the ear 28, the upper end of the rod 25 extending into the nut 29, and thus permittingan adjustment of the tension of the spring' 26in securing' the blade 22 in place.

To hold the clamp-rod 23 against the side of the blade 22, a plate 30 passes through a slot 31 in the plate 16 and is provided with a slot 32, tl'irough which the rod 23 passes. A tension-sjn'ing 33 surrounds the stub end of the plate 30, and the ,opposite end of spring eneircles the shank Sel of a set-screw 35, threaded to iit a threaded opening in a bracket 36, secured to the base l. Suitable stops 37 are secured near the ends of the base to prevent the sliding clamp from moving off the base.

The operation of our invention is `as follows: The blade of the shears to be sharpened is clamped in place and the desired adjustment given to the bevel-clamp. The sliding clamp I is then reciprocated by hand, the edge or' the blade being held down to the grindstone.

Having thus fully described our invention, what We claim, and desire to secure by Letters Patent, is-

1. In a sharpener for shears, a base having a lione or grinding-stone secured thereto, a clamp extending' across the stone and base and sliding upon the base and carrying means for holding the blade at any required inclination.

2. A scissors-Sharpener comprising a base having a hone or grinding-stone secured thereto, a slotted sliding clamp extending across the base and stone and sliding upon said base, a blade-holder, and means for giving the required inclination to the blade.

8. A shear-Sharpener comprising a base having inturned ianges at its edges, a grinding-stone secured to said base, a slide engaging the langes on the base and extending across the stone, aspring-blade holder carried by the slide, and a plate hinged to the slide and provided with means for holding it at any required inclination, substantially as described.

4. In a shear-sharpener,a base-plate, a grinding-stone secured to said base-plate by means of a plate and in combination With a slotted sliding clamp extending across the base and sliding' thereon, and means carried by said clamp for securing the shear-blade and holding said blade at any required angle.

5. In a shear-Sharpener, a base, a grindingstone secured thereto, a reciprocating clamp carrying' a blade-holder, a hinged plate, and means for holding the plate at any required inclination, substantially as described.

JAMES H. VAN TASSEL. JAMES M. THORNTON. Vitnesses:

D. O. CONNELL, H. R. UNDERWOOD.

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