US2024245A - Device for sharpening scissors or the like - Google Patents

Description

Dec. 17, 1935. c. E AN 2,024,245

DEVICE FOR SHARPENING SCISSORS OR THE LIKE Filed June 14, 1934 I. IIIIIIIIIIIII 1 I,

INVENTOR Char/es Newman HIS ATTORNEY Patented Dec. 17, 1935 UNITED STATES PATENT. OFFICE DEVICE FOR SHARRENING SCIS'SDRS OR THE LIKE Charles Newman, Elizabeth, N. .1.

Application June 14, 1934, Seri'al No. 730,630

3 Claims.

for sharpening scissors-or shears, thedevice being such that it may be conveniently kept in a sewing "basket or other handy place.

A further object is to provide a device of this nature which is of extreme simplicity and which requires no skill for its practical operation such as is required with the use of grinding wheels, sharpening stones, etc.

A further object is to provideascissors or shear sharpening device with means whereby it may be readily and quicklypositioned on a table or-bench.

A still further object is to provide a device of the foregoing'nature which is extremely econom ical to manufacture and highly efiicient in use for sharpening the entire blade of scissors or shears of any size.

Other objects and advantages will become apparent as this specification proceeds. Referring to the drawing in which a preferred embodiment of the invention is illustrated:

Fig. 1 is a perspective view of the scissors sharpening device in position on the edge of a table or bench;

Figs. 2 and 3 are sectional views taken respectively on the lines 2-2 and 3-3 of Fig. l; and

Fig. 4 is a fragmentary detail perspective sectional view of an alternate construction.

The device is designed and constructed for the sharpening of scissors or shears. Applicant is aware of the existence of a number of devices in the nature of combination knife and scissor sharpeners. Such devices are usually impractical due to their attempting to sharpen both knives and scissors which have so few characteristics in common. Applicant is also aware of a number of sharpening devices in which the sharpener is held in one hand and engages a blade of the scissors held in the other hand. These devices likewise have not proved efficient in operation.

Referring again to said drawing the reference numeral 5 designates a substantially flat plate having a flange 6 at its forward edge, the flange 6 acting as a table end stop.

A sharpening element 1 is positioned on the plate 5, the forward edge of said sharpening element being placed close to or in line with the forward edge or flange 6 of the plate 5. The sharpening element comprises a file the teeth of which may be either single or cross cut pattern. In practice a bar having fine teeth of a crosscu't pattern has been found quite effective.

The sharpening element 1 is held to the plate and lateral displacement thereof is prevented by a pair of clamping'ears fi. The clamping ears8 5 are preferably struck up from the body of .the plate "and extend'over the parallel side edges of the file or sharpening element.

A tongue 9 is struck up from the body of the ..plate and butts up against the rear edge of the 10 sharpening element :as particularly illustrated in Fig. 2. It will thus be apparent that the file or sharpening element is firmly secured to the plate in an effective and economical manner.

In use the blades of the scissors to be sharpl5 enedare spread wide open. The tip portion of one of the blades is placed on the sharpening element and the blade is tilted slightly so as to bring the beveled cutting edge in conformity to the sharpening surface, the natural tendency of 20 the blade being to ride on the bevel side of the edge in the sharpening operation. The blade is then pressed against the surface of the sharpening element and pushed forward or away from the user. During this operation the tongue 9 pre- 25 vents the sharpening element from moving in relation to the plate 5 and the flange or table end stop 6 engaging the edge of the table II] prevents any movement of the plate. This operation is repeated with each blade as many times as is 30 necessary. Ordinarily three or four strokes of each blade are sufficient to sharpen even a very dull pair of scissors.

By positioning the forward end of the sharpening element close to or in line with the flange 6 the entire blade right up to the hinge may be sharpened.

Any or substantially all parts of surface of the sharpening surfaces may be utilized. This is important as in a number of known devices, guides, 0 flanges or channels are used to position the blade to be sharpened. With these constructions only a very limited area of the sharpening surface is used and the file teeth are soon worn away at that particular location.

Screw holes ll may be provided to hold the sharpening device to a table or bench if desired. When screwed down the flange 6 might be omitted and in sharpening a blade both the forward and backward stroke could be taken advantage of.

The plate is further provided as shown in Figs. 1 and 3 with cut-out or aperture l2. This opening 12 conforms to the shape of the flnger or thumb and aids in holding the device in position on the table while in operation. The opening I2 55 is desired, particularly in sharpening a pair of small scissors, as both the forward and backward strokes may then be utilized in the sharpening operation. The weight and pressure of the hand bearing down on the shears holds the device down on the table and the forward sharpening stroke of the shears against the cutting teeth of the file, the cutting teeth of the file substantially facing toward the flange 6, creates apull on the table end stop 6 and tightens it against the edge of the table. In sharpening a large pair of shears it may be desirable to use two hands on the shears in order to secure sufiicient downward pressure" and insure good results.

In the form illustrated in Fig. 4 a bead l3 may be stamped up from the under side of the plate and surrounding the aperture l2. This would greatly aid in preventing slippage of the. device,

engage the edge of a table, a sharpening element having its forward edge substantially in line with said flange, clamping ears for holding said sharpening element to said plate and preventing lateral displacement thereof, a tongue engaging the rear edge of said sharpening element to prevent rearward displacement thereof, and an aperture in said plate adjacent said sharpening element, to conformably engage the thumb or finger and thereby prevent forward displacement of the device.

2. A device for sharpening scissors or the like, said device having in combination a plate, a flange on the forward edge of said plate adapted to engage the edge of a table, a sharpening element having its forward edge substantially in line with said fiange, clamping ears for holding said sharpening element to said plate and preventing lateral displacement thereof, a tongue engaging .the rear'edge of said sharpening element to prevent rearward displacement thereof, an aperture in said plate adjacent said sharpening element, and a raised bead surrounding said aperture.

3. As a new article of manufacture, a scissors sharpening device formed entirely from a sheet of fiat material, the forward end portion being bent down angularly thereby forming a flange, said flange to act as a table end stop for said device, and the balance of said sheet forming a rearwardly extending portion, a file positioned horizontally and flatwise on the surface of said rearwardly extending portion, the front edge of said file transversely adjoining said flange, the device being adapted to fit the edge of a table and the table end stop acting to prevent rearwarddisplaceinent of the device in the forward sharpening operation, ears being formed on the surface of said rearwardly extending portion adjoining the sides of said file to prevent lateral displacement thereof, said ears being bent over the side edges of said file for permanently attaching said file to said rearwardly extending portion, and a tongue formed on the surface of said rearwardly extending portion for abutting the rear end of said file below its sharpening surface and thereby prevent rearward displacement of said file.

CHARLES NEWMAN.

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