US1189555A - Stropper. - Google Patents

Description

' w. J. FRANCIS.

STROPPER.

APPUCATH) 1915- 1 1 89,555, Patented July 4, 1916.

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WILLIAM JAMES FRANCIS, OF PITTSBURGH, PENNSYLVANIA.

STROPPER.

Application filed January 18, 1915.

1'") all whom it may concern:

Be it known that I, WVILLIAM J. FRANCIS, a citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Streppers; and I hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, which form part of this specification.

This invention is a novel device for stropping razor blades and the like, being especially adapted for stropping so-called safety razor blades of various kinds, and it provides a simple novel device whereby safety razor blades can be conveniently stropped after the manner in which a barber strops an ordinary razor, thus enabling the owner to use such blades for months, whereas ordinarily such blades quickly become too dull for use and have to be thrown away, as the ordinary resharpening process destroys the temper of such blades and renders them worthless.

The invention consists in the novel construction of the stropper illustrated in the accompanying drawings and hereinafter described in detail; the essential features thereof being summarized in the claims.

In said drawingsFigure 1 is a perspective view of the stropper in position for stropping a razor blade on astrap. Fig.2isa longitudinal section through Fig. 1. Fig.

3 is a detail perspective view of the blade holding member. Fig. 4 is a detail section on line 8-S, Fig. 3; and Fig. 5 is an enlarged detail section on line 99, Fig. 4:. Fig. (3 is a detail view of one type of detachable blade holding device. Fig. 7 is a detail view of another type of safety razor blade.

The stropper comprises a frame preferably made of sheet metal and having vertical parallel side portions 1 connected at top and ends by cross pieces 1; and from the inner edge of cross pieces 1 rise ears 1 by which the stropper can be manipulated. The sides 1 may be braced. by cross rods 1 attached thereto beneath bars 1 as shown in the drawings.

The upper edges of the side portions 1 may be provided with central upstanding parts 1 in which are formed bearings or openings for the reception of the trunnions of a pair of parallel rollers 2, 2 and an 1ntermediate shaft 3. The said shaft carries Specification of Letters Patent.

Patented July at, 1916.

Serial No. 2,843.

a pinion 3 at one end which meshes with pinions 2 on the adjacent ends of the rollers 2 so that when the rollers are turned in either direction the shaft will be turned in the opposite direction.

Connected to the outer end of the shaft 3 are the arms l of an oscillating yoke bar 4 which is provided with a blade holder 5 preferably composed of a piece of strip metal bent upon itself and over the bar at so as to form a pair of parallel lips projecting from the outer side of the bar and adapted to embrace a blade or blade holding device, hereinafter referred to and hold such blade perpendicular to the bar 4 and in a plane radial to the shaft 3. The holder 5 may be securely positioned on the bar t by having the opposite sides of the bar slightly recessed as at 4: and bending the plate 5 over the recessed portion of the bar as shown in Fig. 3 thus preventing longitudinal displacement of the holder 5 on the bar, while the ends 5 of the holder project slightly beyond the recessed portions 4 and prevent the holder slipping inwardly off the bar. The holder is thus securely locked to the bar when bent thereover as shown.

The ends of the bar l may be provided with projecting portions 4- which are adapted to counterbalance the weight of the holder 5. Said holder is adapted to receive and hold razor blades of various types, the blades being readily insertilole and removable from the holder whenthe latter'is in a perpendicular position. For instance, a blade like that indicated in Fig. 7 can be slid endwise into the holder 5, and can be removed therefrom in the same manner. WVhen a thin blade 9 is to be stropped, an auxiliary holder 7, such as shown in Figs. 1 and 6, may be employed. Such holder can be inserted or removed endwise from holder 5 in the same manner that blade 8 can be inserted or re- 1 When the stropper is moved tothe left, as indicated in full lines in Fig. 2, the friction 'on rollers 2 causes them to rotate to the sented to the surface of the strap as indicated in dotted lines in Fig. 2. The greater the downward pressure exerted upon the stropper the more effectively the blade is stropped,,and the edge of the blade is sharpened exactly like a barber strops a razor blade.

What I claim is:

1. In a razor stropping device the combination with a frame adapted to be placed upon and reciprocated along a strap; of a transversely disposed roller and shaft journaled in the sides of said frame, and gearing between said shaft and roller, a yoke connected with said shaft and spanning the roller and adapted to be swung back and forth according to the rotation of the roller,

a blade holder attached to said yoke, and

an auxiliary blade holder adapted to be de tachably engaged with the aforesaid blade holder, substantially as described.

2. A stropping device comprising a frame adapted to be placed upon and reciprocated along a strap, a roller and shaft journaled in said frame, gearing between said shaft and roller; a yoke rigidly attached to the ends of said shaft and spanning the roller, and a blade holder attached to said yoke and lying in a plane radial of the shaft, said yoke having a counterbalance attached thereto to counterbalance the weight of said holder, substantially as described.

3. r In a razor stropping device the combination with a frame adapted to be placed upon and reciprocated over a strap; of trans versely disposed rollers, journaled in said frame, a, shaft intermediate the rollers, gearing between said shaft. and rollers, a yoke bar connected with said shaft and spanning the rollers and adapted to be swung back and forth over said rollers according to the rotation of the latter, and a blade holder comprising a metal plate bent over said yoke the opposite ends of the plate forming lips adapted to hold a blade, substantially as described.

4. A stropping device comprising a frame stamped out of metal having depending sides connected by cross bars the latter being provided with upstanding ears, a pair of rollers journaled in said side members intermediate the said ears, a shaft journaled in the side pieces intermediate the said ears, intermeshing pinions on said shaft and rollers; a yoke rigidly attached to the ends of said shaft and extending across the frame, and a blade holder attached to said yoke and lying in a plane radial of the shaft and counterbalanced on the ends of said bearing.

5. In a razor stropping device the combi nation with a bar having a recessed central portion; of a blade holder composed of a piece of metal bent upon and over said recessed portion of the bar so as to engage said recessed portion of the bar to prevent its longitudinal movement on such bar, said plate having its forward ends extending beyond the recessed portion of the bar so as to prevent disengagement of the holder from the bar.

6. A stropping device comprising a frame, a pair of rollers journaled in said frame, a shaft journaled in the frame intermediate the said ears, intergeared pinions .on said shaft and rollers, a yoke rigidly attached to the ends of said shaft and extending parallel therewith and spanning the rollers, a

blade holder comprising a metal plate bent over said yoke so as to lie radially of said shaft, and the opposite ends of the plate forming lips adapted to retain a blade.

In testimony that I claim the foregoing as my own, I affix my signature in presence of two witnesses.

, WILLIAM JAMES FRANCIS- Witnesses H. B. ROBBINS, V C. S. TAGGART.

copies of this patent may be dbtained for five cents each, by addressing the Commissioner 0! Patents, Washington, D. G.

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