US2746326A - Combination shear set and sharpening device - Google Patents

Description

May 22, 1956 K. K. CRABS ET AL 2,746,326

COMBINATION SHEAR SET AND SHARPENING DEVICE Filed Nov. 9, 1954 INVENTORS JOHN A.6AEDE 6/ Y KERWIN K. CRABS B COMBINATION SHEAR SET AND SHARPENIN DEVICE Kerwin K. Crabs and John Albert Gaede,

" Manhattan, Kans.

Application November 9, 1954, Serial No. 467,692

2 Claims. or. 81-15) This invention relates to device which is adapted to be selectively used, either as a set for a pair of scissors or shears, or as a sharpening device in which said shears can be secured while being sharpened.

One important object of the present invention is to provide'a device of the. type statedwhich will be capable of manufacture at a minimum of cost, but will neversimply constructed of theminimum of parts that will not readily break or get out of order.

Yet another object is to provide a'device as described which. will be particularly shaped to facilitate its being held in the hand while a shears or scissors is being inserted in proper position within the device for setting of the blades thereof. 7

Yet another object is to so form the combination shear set and vise as to facilitate the application of pressure against the shears at any of various points longitudinally of the blades thereof. I

A further object is to provide a pressure-exerting means mounted upon a suitable cast base, which means will be olfset longitudinally of the base from the midlength or center point thereof, so as to cause the setting pressure to be exerted at a location found particularly desirable in relation to the support point of the base against which the shears are held during the operation.

Other objects will appear from the following description, the claims appended thereto, and from the annexed drawing, in which like reference characters designate like parts throughout the several views, in which:

Figure 1 is a perspective view of a combination shear set and sharpening vise formed in accordance with the present invention;

Figure 2 is a perspective view of the device looking at the side thereof shown as the far side in Figure 1;

Figure 3 is a transverse sectional view substantially on line 33 of Figure 1; and

Figure 4 is a plan sectional view substantially on line 44 of Figure 3.

The reference numeral 10 has been applied generally to a cast base, preferably of cast iron or other heavy, strong material. The base is relatively elongated and is approximately triangular in cross section, having a bottom surface 12, an inner surface 14 disposed within a plane plane of the bottom surface 12, so as to be inclined slightly from the vertical when the bottom surface is disposed in a horizontal plane in normal use position of the device.

An outer surface 16 is transversely curved in a direction inwardly of the base, so as to be slightly concave from end to end of the base. The inner and outer surfaces converge in a direction away fromthe bottom surface 12 when the base is seen in cross section as in Figure 2,746,326 .Fatented May 22,1956

i 4 ce 3, thus to impart the approximately triangular cross sectional shape to the base. 1 t i The outer surface 16, at its lower end, merges into a longitudinal reinforcing flange 18 of the base, said flange further serving to extend the area of thebottom surface 12 to provide a relatively large supporting-surfaceecontacting area on the device when the same is positioned against a table or other support structure, not shown, during use thereof as a sharpening vise. f:

At oppositeends of the inner surface 14 there are integrally formed lugs 20. The lugs 20 project out of the plane of. the inner surface 14, and extend from, top to bottom of said inner surface. When scissors, not shown, is being sharpened, the blade will be supported at locations spaced longitudinally of the blade against the lugs 20, and the lugs 24 being of bar-like shape as shown inFigure 2, will extend transversely of said blades to support the same through the full width thereof.

Integrally formed upon the base, at the lower end of the inner surface 14, is a longitudinally extending, inner base flange 22. This further serves to extend the area ofContact with a supporting surface, and further serves as the means for integrally connecting to the base a pressure screw support block 24. Block 24 is cast with a base, and an important characteristic of the invention resides in oifsetting of the block longitudinally of the base from the midlength point of the base. This is shown to particular advantage in Figure 4, it being noted thatthe b1 ock 24, having a transversely extending, threaded opening 26, is disposed nearer one lug 20 than it is to the other log,

Threaded in the opening 26 is a pressure screw 28, the inner end of which is normally spaced from the inner surface 14 as shown in the several figures of the drawing. At its outer end, the screw is integrally formed with a laterally projecting extension 30 constituting a handle.

In use, the blade of a scissors or shears, is disposed in the space between the inner end or pressure head of the screw, and the inner surface 14. The device, when used for imparting a desired set or curvature to the shears blade, may be held in one hand, with the thumb against the concaved outer surface 16. The shears are held in place with two fingers of the same hand, in engagement point. Tightening of the screw to a selected extent imangularly related at slightly less than 90 degreesto the parts a desired curvature to the blade, after which the screw is backed off. Should it be found that the set is not sufiicient, shears can be moved in the direction of its length in either direction, after which the operation is repeated.

The use of the ofiset screw support block permits the set to be placed in the shears close to the point or tip thereof.

When the device is to be used as a sharpening vise for shears, it is fastened to a table or other support. To this end, the flange 22, at a location between block 24 and inner surface 14, is formed with an opening 32 adapted to receive a screw or the like, not shown. Said screw is engaged in the associated support, thus to secure the device firmly in said support. The shears may now be inserted in the device in the manner previously described. The device should be disposed at a slight angle to the edge of the table, so that the handleof the shears can be disposed beyond said edge. The pressure screw 28 is now tightened, and a suitable sharpening tool, not shown, is applied to the blade edge of the shears.

With further reference to the offset disposition of the screw support block, it has been found that greater bendmedially between the lugs.

. change in construction that may be permitted within th scope of'the appended claims.

What is claimed is:

1. A device for setting shears and for supporting the same during sharpening thereof, comprising an elongated, cast base having an approximately triangular cross section, said base having a flat bottom surface and having an'inner surface inclined slightly from the vertical; lugs formed upon opposite ends of the base and one on each side of said inner surface, said lugs extending transversely of said inner surface and being of bar-like formation so as to bein engagement with a shears supported thereagainst over the full width of said shears; a pressure screw support block integrally cast with the base intermediate the opposite ends thereof, said block being spaced laterally of the base from said inner surface and being formed with,

a threaded opening extending normally to the plane of said inner surface, said block being offset longitudinally of the base from the midlength point of the base so as to be nearer one of said lugs than the other; a pressure screw threaded in said opening of the block and shiftable in the direction of said inner surface so as to apply pressure against one side of a shears the other side of which is engaged against said lugs; and a handle formed upon said screw.

2. A device for setting shears and for supporting the same during sharpening thereof, comprising an elongated, cast base having an approximately triangular cross sec tion, said base having a flat bottom surface and having an inner surface inclined slightly from the vertical; lugs formed upon opposite ends of the base and one on each side of said inner surface, said lugs extending transversely of said inner surface and being of bar-like formation so as to be in engagement with a shears supported thereagainst over the full Width of said shears; a pressure screw support block integrally cast with the base intermediate the opposite ends thereof, said blockbeing spaced laterally of the base from said inner surface and being formed with a threaded opening extending normally to the plane of said inner surface, said block being offset longitudinally of the base from the midlength point of the base so as to be nearer one of said lugs than the other; a pressure screw threaded in said opening of the block and shiftable in the direction of said inner surface so asv to applypressure against one side of a shears the other side of which is engaged against said lugs; and a handle formed upon said screw, said base including a longitudinal flange extending from one of said lugs to the other, said block beingintegral with said flange, the flange having an opening intermediate its ends adapted to receive a screw or the like for connecting the base to a supporting surface.

References Cited in the file of this patent UNITED STATES PATENTS 498,469 Freeman May 30, 1893 1,426,026 Webster Aug, 15, 1922 1,517,309 Morgan Dec. 2, 1924 1,651,546 Reynolds Dec. 6, 1927

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