US2009389A

US2009389A - Tool sharpener

Info

Publication number: US2009389A
Application number: US730670A
Authority: US
Inventors: Anderson James Boyd
Original assignee: Individual
Current assignee: Individual
Priority date: 1934-06-14
Filing date: 1934-06-14
Publication date: 1935-07-30
Anticipated expiration: 1952-07-30

Description

July 30, 1935. J ANDERSON 2,009,389

TOOL SHARPENER Filed June 14, 1934 Hndarsan Patented July 30, 1 935 UNITED STATES- PATENT OFFI CE TOOL SHARPENER James Boyd Anderson, Winchester, Ky. Application June-14, 1934, Serial No. 730,670 4 Claims. (oral-205) This invention relates to sharpening tools and more particularly to a tool especially designed for sharpening scissors. a The object of the invention is to provide a simple, inexpensively and thoroughly efiicient device of this character by meansof which a pair of scissors, shears, or other implements, which has become dull through use, may be readily sharpened by an unskilled person.

A further object of the invention is to provide a sharpening tool including a body portion having a holder disposed at an angle thereto andintegral therewith, said holder being adapted to receive a file or strip of abrasive material so'that when the device is positioned on the scissors or other implement to be sharpened, with the abrading strip or file in contact with the cutting edge. of the blade and said tool reciprocated' thereon, the desired angle or bevel will be imparted to said cutting edge.

A further object of the invention is to extend the abrading strip or block beyond the opposite ends of the holder so as to facilitate sharpening the entire length of the cutting edge of the blade, and further to form the body portion with fingerreceiving seats to permit the tool to be conveniently grasped and supported when in' use.

A still further object of the invention is generally to improve this class of devices so as to increase their utility, durability and efficiency.

In the accompanying drawing forming a part of this specification and in which similar numerals of reference indicate corresponding parts in all the figures of the drawing:

Figure l is a perspective view of a scissors sharpener embodying the present invention showing the manner of using the same.

Figure 2 is a perspective view of the sharpener.

Figure 3 is a transverse sectional view thereof.

Figure 4 is a perspective view of a modified form of the invention showing an adjustable abrasive holder.

Figure 5 is a side elevation.

Figure 6 is a top plan view.

The improved scissors sharpener, forming the subject-matter of the present invention, comprises a solid body portion 5 preferably substantially rectangular in shape, as shown, and formed of metal, bakelite, or other suitable material. EX- tending from the rear edge of the body portion and preferably integral therewith is a holder 6 having a seating channel I formed therein and adapted to receive a strip or block of abrasive material, indicated at 8, The holder 6 is preferably of the same width as the body portion 5 and the open side of the channel I faces the lower fiat bearing surface 9 of the block, as best shown in Figure 3ofthe drawing. The channel I, at

its junction with the body portion 5, forms a transverse shoulder I 0 against which the strip of abradingmaterial 8 rests so that the block of abrading material, when inserted within the holder, extends slightly below or beyond the bearvents the cutting blade II of the scissors or shears from contacting with the corner of the abrasive material. The ends of the abrading strip 8 preferablyproject beyond the adjacent end of the holder 6, as indicated at I2,so as. to permit sharpening of the extreme end of the blade, as well as the inner or pivoted end thereof. The abrading strip or block 8 is inserted within the holder from either end thereof and is retained Within the holder by a clamping screw orsimilar fastening device I3. The rear edge of the body 5 is preferably inclined or beveled at I l, and this-inclined edge and the opposite side faces of the body portion 5 are formed with seats or depressions I5 adapted to receive the fingers'of the hand so as to permit the tool to be conveniently grasped and supported during the sharpening operation.

When sharpening a pair of scissors, said scissors are supported in the lefthand and the body portion of the tool grasped between the fingers of the right hand, and positioned on the fiat side of the blade I I, in the manner shown in Figure l of the drawing. By now reciprocating the tool over the surface of the blade, the abrading strip 8 will contact with the cutting edge and impart the desired angle or bevel thereto and thereby thoroughly sharpen the scissors. As the lower face 9 of the body portion is fiat, said face forms a guide for the tool during the reciprocation thereof, and, inasmuch as the opposite ends of the abrading strip 8 project beyond the holder, the inner as well as the outer end of the blade will be sharpened, as previously stated. The inclination of the holder, with respect to the body portion 5 may be at any angle between 45 and in order to take care of the different makes and grades of shears and scissors and the varying bevels on the cutting edges thereof and, when reciprocating the tool, the abrading strip will follow the original bevel of the scissors, as will be readily understood. Should the abrading strip become worn from constant use or otherwise damaged, said strip may be readily replaced by loosening the screw I3, removing the old strip and inserting a new strip within the holder. In

' ing surface 9 ofthe body portion and thus pre- 2 Figures 4 to 6, inclusive, I have illustrated a modified form of the invention in which the holder is adjustable with respect to the body portion so as to permit it to be set at any desired angle or inclination relative thereto.

In this form of the invention the abrasive holderis slotted transversely to provide spaced resilient fingers l6, and the bodyof the tool is provided with similar fingers I! which fit between the fingers l6 and through which passes apivot pin or bolt l8. Oneend of the bolt !8 is provided with a tool-receiving kerf or seat 19 while the other end thereof is threaded for engagement with a nut 20 so that, by loosening the bolt, the holder may be swung the desired position, and whenthe bolt is tightened the resilient fingers will i be pressed together and clamp the holder in adjusted posi: tion. The bearing face oi the body, at its juno tion with the holder, is cut away to form an in-' clined shoulder 2i which permits swinging movemerit of theholder and also serves to prevent the cutting edge of the from contacting with the corner of the abrading strip. l e It will also be understood that the devicemay be made in different sizes and shapes and plated or otherwise ornamented to impart an attractive ap pearance thereto.

While the tool s especially designed for sharp: ening scissors and shears, will, of course, be understood that it may be used with equally good results for sharpeningthe blades of lawn mowers and other cutting implements and that, ii desired, a file may beused in the holder instead of an ahrading strip without departing from the spirit of the invention. 2

Having thus described the V i nii I e e m 1. A tool sharpener comprising a solid substantially rectangular body having a downwardly in: clined rear face and a flat loweriace, a holder carried by the bod t nd n downwardly rom.

laterally on its pivot tov tool being sharpened.

the inclined rear face thereof and disposed at an angle to the fiat lower face, said downwardly inclined face and the opposite sides of the body being formed with finger-receiving depressions, a sharpening element seated on the holder, and a clamping screw extending through the holder and engaging the sharpening element.

2. A tool sharpener comprising a body portion having a depending open-ended holder provided with a seating channel opening in the direction of the bottom of the body portion, there being a transverse shoulder formed in the bottom of the body portion at the open side of the channel, a sharpening element insertable within the channel from either end of the holder and bearing against said shoulder, and a clamping screw extending through the holder and engaging the sharpening element, therear wall of the body portion being inclined downwardly in the direction of the holder and the opposite sides of said body portion being provided with finger-receiving recesses.

A tool sharpener comprising a body portion provided with spaced fingers, a holder having resilient fingers fitting between the fingers of the body portion, a bolt extending through said fingers and farming a pivot, a sharpening element seated the holder, and means engaging the'bolt for clamping the fingers together to hold the holder in a set position.

4, A tool sharpener comprising a body portion having finger-receiving depressions therein and provided at one edge with spaced fingers, a holder having spaced slotsdefining resilient fingers fitting between the fingers on the body portion, and a clamping bolt extending through the fingers and forming a pivoted connection between the holder and body portion, said body portion being provided with a fiat bearing face having a cut" away portion defining a shoulder inclined in the direction o'f'sai'd pivot.

ar/ ns BOYD ANDERSON.