US2047439A - Scissors sharpener - Google Patents

Description

INVENTOR ATTORN EY H. M. sKEvlNG-roN scIs'soRs SHARPENER Filed Sept. 9, 1955 July 14, 1936.

WITNESS Patented July 14, 1936 UNITED STATES PATENT OFFICE 4 Claims.

This inventionl relates to scissors sharpen'er's` of the type in which a file is arranged at` about a 45 angle to the guide to give the proper bevel to the cutting edge.

An object of the present invention is to provode a scissors Sharpener of this character in which a pair of files are mounted on an inverted V-shaped bridge forming a part of the support, the legs of the bridge disposing the files' textend' at about a 45 anglel to the rims of the sides of the support which latter form guides, the files being detachably secured to the bridge by a single clip which permits the files being interchanged or renewed when worn without tools or the services of an expert.

A further object is to provide a device of this character in which one file may be used for forming a bevel on one of the blades of the scissors and the other le may be used for forming a bevel on the other blade of the scissors, this being of advantage in that both files are arranged so that the teeth of one slope in one direction and the teeth of the other in the opposite direction, whereby accurate bevels may be cut in minimum time on the blades of the scissors.

A further object is to provide a device of this character which will be light, strong and durable, which will be compact in form, which will be easy to manufacture, and which will not easily get out of order.

With the above and other objects in view the invention consists of certain novel details of construction and combinations of parts hereinafter fully described and claimed, it being understood that various modifications may be resorted to within the scope of the appended claims without departing from the spirit or sacricing any of the advantages of the invention.

In the accompanying drawing forming part of this specification,

Figure 1 is a perspective view of a scissors Sharpener constructed in accordance with the invention and showing successive steps in filing the blades of scissors.

Figure 2 is a cross sectional view taken on the line 2 2 of Figure 1 showing the bridge and the clip for fastening the files to the bridge.

Figure 3 is a longitudinal sectional view taken on the line 3-3 of Figure 1.

Referring now to the drawing in which like characters of reference designate similar parts in the various views, I0 designates a support or casing having parallel side and end walls II and I2, each flanged at the bottom, and I3 designates the bottom of the casing, the edges of which are crimped over the bottom flanges of the side andl end walls as` shown at I4. The casing is preferably formed of sheet metal. The end walls I2 are double as shown at I5 in Figure 3 to 5 reinforce them to resist strains.

As shown in Figure 1, the upper ends of the side walls II are bent back as shownv at I6 in Figure 2 to formadouble thickness of metal or rim which also constitutes astrong rigid guide' 10 for the scissors blade as will presently be described. The end walls I2 moreover are slotted as shown at Il to permit the scissors blades being reciprocated longitudinally of the guides I6.

An inverted V-shaped bridge I8 formed of 15 sheet metal, is disposed within the casing, the ends of the bridge being bent downwardly as shown at I9 and rigidly secured in any preferred manner to the inner surfaces of the casing side walls II. The inclined legs of the bridge extend 20 at substantially a 45 angle to the guides I6. A pair of files 20 are disposed on the legs of the bridge and the longitudinal edges of the files abut the guides I6 as best shown in Figure 2. A clip 2l is disposed to straddle the ridge of the 25 bridge I8 and the ends 22 of the clip are bent downwardly to overlie and snugly engage the upper longitudinal edges of the files 20. A screw 23 is threaded through the clip and through the ridge of the bridge I8 and a nut 24 is secured 30 in any preferred manner to the underneath surface of the ridge to receive the screw. The screw may be removed to interchange the files in order to bring a new surface in juxtaposition with respect to the guides when the files have become 35 worn or to permit replacement of a worn file with a new le.

The files 20 are so disposed that the teeth of one file will slope in opposite direction with respect to the teeth of the other le. The purpose 40 of this is to permit one blade of the scissors to be pressed against one of the files and move longitudinally along the associated guide in a direction opposite to the slope of the teeth of the file to quickly cut the proper bevel on the edge 45 of the blade. The other blade of the scissors may now be thrust into the slotted holder from the opposite end thereof, as shown best in Figure 1, so that when this blade is pressed and moved longitudinally of the associated guide the teeth of 50 the file will slope in a direction counter to the movement of the blade so that again the proper bevel will be quickly cut on the blade.

In operation one blade of the scissors to be sharpened may be thrust through the slots I1 in 55 the end walls of the casing and placed against the guide I6 and associated iile 20 as illustrated at the left of Figure l, it being assumed then that the teeth of the file point toward the scissors. It will be evident that a forward thrust of the iile with light pressure against the file teeth Will be sufficient to quickly cut the proper bevel on the edge of the blade. To sharpen the mating blade of the scissors, the scissors are reversed as shown at the right of Figure 1 and the mating blade is pressed against the le and moved in a direction counter to the slope of the teeth of the file, and in this instance the le teeth must be assumed to slope toward the scissors or in a direction opposite to the direction of the teeth of the rst used le.

From the above description it is thought that the construction and operation of the invention Will be' fully understood without further explanation.

What is claimed is:

1. A scissors Sharpener comprising a casing, an inverted V-shaped bridge secured to the Walls of the casing, the side Walls of the casing projecting above the bridge and forming guides, the legs of the bridge extending at an angle of approximately 45 to the associated guide, and a pair of files supported by the bridge and the guides, the slope of the teeth of one of the les being opposite to the teeth of the other file.

2. A scissors sharpener comprising a support, guides on the longitudinal edges of the support, an inverted V-shaped bridge forming a le holder on the support between the guides, the legs of the bridge extending at an angle of approximately 45 with respect to the guides, a pair of iiles on the le holder, and means for removably securing the les to the le holder.

3. A scissors Sharpener including a casing having reinforced side and end walls, an inverted V-shaped bridge connecting the side Walls and the end walls, and having the longitudinal edges of its legs disposed below the rims of the side walls, there being slots in the end Walls contiguous to said rims to permit a scissors blade being disposed against the guides and reciprocated therealong, and les on the legs of the support disposed at substantially a 45 angle to the guides.

4. A scissors Sharpener including a casing, an inverted V-shaped le holder closing the top of the casing, a pair of iiles on the legs of the holder, the sides of the casing rising above the files and forming guides along which the scissors blade may be moved while in engagement; with the associated le, a clip on the apex of the le holder having the ends overhanging both les, and means for removably securing the clip to the le holder.

HARRY M. SKEVINGTON.

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