US1817506A - Sharpener for shears and scissors blades - Google Patents

Description

Aug. 4,1931. w. w. BRISBEN 1,317,505,

SHARPENER FOR SHEARS AND SCISSORS BLADES Filed Sept. 23. 1927 INVENTOR.

ATTORNEY.

Patented Aug. 4, 1931 UNITED STATES,

SHARPENER ron sHEARs 135,035 BLADES Application filed September23ii1fli7i 7 The objects of the invention are to provide a practical and efiicient tool for sharpening shears and scissors in barber or other shops where shears are in constant use and where much time could be saved if they could be sharpened on the spot without sending them away for this purpose. I

With this device a suitable abrading instrument is employed such, as a file or bar it of carborundum to sharpen the blades and a rigid rest block is provided in which the shears or scissors are secured by suitable clamping means in such a manner that the edge of the blade is presented at precisely the right angle for sharpening to the abrading instrument. Also the abrading instrument is mounted in a block which is slid- 'ably movableby hand upon a suitable base or table towards and from the work, While it is rigidly held in the aforesaidrest block. Further the rest block is rotatable in said base or table, to enable the workman to adjust the angle of cutting to the character of the cutting edge required. The invention" also provides a rest block having a groove therein, in which the back of the blade is received, and having an inclined side for the reception of the inner fall of the blade-thus presenting the cutso ting edge of the blade at the required angle to the abrading tool. The bottom of this groove should also conform substantially with the curvature of the back of the blade. The invention is hereinafter more. fully described, illustrated in the accompanying drawings and specifically pointed out in the claim.

In the accompanying drawings Fig. 1 is a perspective of the device;

Fig. 2 is a side elevation thereof;

Fig. 3 is a plan thereof;

Fig. 4i is an elevation of the side opposite that shown in Fig. 2, and

Fig. 5 is a perspective of the sliding block or tool holder. 1

In these views, 1 is a table or fiat topped base, upon which the metallic rest block 2 is horizontally rotatable and is secured by means of thevertical pin 3 and nut 4.

Inthis block is formed the longitudinal groove 5' having an inclined-side'b, upon which the inn r. face of. heb 7 Ofth scissors or shears lies anda set screw 8 adjustable in the adjacent lug 9 secures the 65' blade rigidly in place. This set screw is .provided with a bevelled outer extremity which presses against, the inclined upper face of the blade and serves to force the blade down as well as to hold it against the inclined side 6 of the rest block 2 as shown in Fig. 2. r

The outer extremity of the groove is preferably curved upward at 10 to conform to the shape of the back of the blade and give a firm support thereto.

The angle of inclination of the inclined wall of the groove should be such that when a flat abrasive tool is passed horizontally over the exposed upper edge of'the blade the required bend will be produced thereon.

The abrasive tool 11 may be a file or flat stripor bar composed of carborundum or other abrasive material and is secured in a holding or block 12 slidably movable towards andfrom said rest block and blade.

The file or other abrasive implement is.

preferably inserted in a horizontal groove 13 in said block and the tang of the file extends through the rear opening 14 there- 8 1n.

A set screw 15 serves to secure the tool in place.

By revolving the rest block upon the I pivot pin the blade may be presented at any 86 angle desired to the abrasive tool.

The degree of inclination of theside of the groove may be adjusted by the insertion of a thin shim plate 16 underneath the blade -00 ifdesired.

Also a block 17 of an desired'thickness may be placed underneath the tool holder to raise the blade to any elevation desired. To file a straight and fiat'bevel upon the edge n of the blade the hollow of the hand rests upon the, file holder, with the forefinger resting on the file, the file holder is pressed down on the table and the file is pushed across the work.

Having described the invention what I claim as new and desire to secure by Letters Patent is- In a shar ening device for the blades of shears or sclssors, a blade holder comprisingi a horizontal plate having a lug at one on and a longitudinal groove therein, said roove having inclined sides a ainst which t einner side and back edge 0 said blade rests, the side against which the back edge of said blade rests being curved upwardly at its outer end to conform to the shape of the back edge of the outer end of said blade and to provide a complementary support for said outer end, and a pointed set screw in said lug to engage the outer side of said blade. r

In testimony whereof I afiix my signature.

WILLIAM W. BRISBEN.

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