US1025963A - Razor and blade stropper. - Google Patents

Description

B. W. COLE. RAZOR AND BLADE STROPPER. APPLICATION FILED HAB..16,1910.

Patented May 14, 1912.

Atfo r n eys geant: @l lPlZtJE.

ELISHA W. COLE, OF RICHMOND, VIRGINIA.

RAZOR AND BLADE STROPPEB Specification of Letters Patent. Application filed March 16, 1910.

Patcntedlllay 14, 1912. Serial No. 549.587.

To all whom it may concern Be it known that I, ELISITA W. Conn, a citizen of the United States, residing at Richmond, in the county of Henrico and State of Virginia, have invented a new and useful Razor and Blade Stropper, of which the following is a specification.

This invention relates to razor and other blade stropping devices such as are. used particularly for sharpening the blades of safety razors, although the device of the present invention may be used in other connections and with other types of blade if desired.

In automatic stropping machines as usually constructed, the relative movement between the strop and the frame in which the blade is mounted, is depended upon to rock the blade so as to bring the proper edge into position to be sharpened. The greatest dil'liculty experienced in the manufacture and use of razor stroppers resides in this mechanism for rocking the blade holder. Unless this mechanism acts with absolute precision and with the necessary degree of rapidity, the blade is very apt to sever the strop.

lVith the foregoing considerations in view, the principal object of the present invention is to provide reliable, accurate and quick acting mechanism for operating the blade holder for either one orig n or two edge blades, whereby to avoid the possibility of cutting the strop, and also to increase the eliiciency of the device generally.

.5. further object of the invention is to arrange the blade holder in an improved manner and position so as to facilitate the operation of 'ilacing' the blade in mid rcmoving the same from the stropping machine.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the core hination and arrzmgemcnt of parts and in the details of coi'istruction. hereinafter described and claimed, it being understood that changes in the precise embodiment: of invention herein. disclosed can be made within the scope of the claim without departing l'rom the spirit of the invention.

In the accompanying drawing forming part or this specification :-Figure 1 is an end elevatii'm of a stropping machine c0nstructcd in accordance with the present invention. .t ig. 2 is a perspective view of the device showing the two frames thereof in open or separated position, whereby the blade holder which is mounted. on one of said frames and is entirely out of connection with the other of said frames, is in readily accessible position so asto permit the operation of placing the blade in. or remow iug' the smile from the device to be expo ditiously pcrformech Fig. 3 is a horizontal section taken through the shopping; machine. Fig'. alis a section on the line of Fig. 3.

Like reference numerals indicate corresponding parts in the dill'ercnt figures oi the drawings.

Generally outlined, the machine oi. the present invention comprises a main roller with which are pivotally connected :1 pair of guide frames adapted to be closed in substantially the manner of an ordinarv pocket-book. One of these frames carries l rocking blade holder which is operated by said main roller and is entirely tXPOHttl when said frames are open. Loosely sur rounding, the main roller is an ordinary metal sleeve, and the strop which is guided by said l rau'ics', is looped around this loose sleeve. 'hen the sirop is pulled in on direction or the other, the trictional cugagw ment between the interior or bore ot the loose sleeve and the exterior or periphery of the main roller imparts sulliriont 1uo\'c ment to said main roller tow-nose it, to rock the blade holder into position to cause both edges oi the blade held thereby to engage the oppositely moving portions of the st rop. so as to ollicct simultaneous sharpening ot the two edges of the blade. Alter the l()(). '(5 sleeve by its trictioi'ial engagement with the main roller has rocked the blade holdei: to proper position, the continued iuovt-uu-ut ol' the strop in the same direction is pin-milled either by the strop Slitlll'lg loosely around the sleeve, or by the sleeve rotating loosely on the main roller.

The reference numeral 1 indicates the main roller which is provided at itsflcuds with truuuions or rxteusious upon which I are pivotiai'ly mounted the arms 3 and 4- ol' the swinging Frames A and 13. Likewise pivotally .:ouncctc(l with the truuuious or extensions is a bracket 5 which is provided I with a suitable ring or fastening device b by means of which the stropper may be an- }chorcd or connected with a. wall or support.

other Loosely surrounding the main roller 1 is a metal sleeve 7 which is preferably of a slightly larger diameter than the roller 1 so as to avoid the possibility of the sleeve sticking to and positively rotating with the roller, and yet produce suflicient frictional engagement between the sleeve and the roller to cause the sleeve to rotate the roller when necessary. Looped around the sleeve 7 is the razor strop 8 which serves to pro duce the oppositely movable stropping surfaces 9 and 10.

Each of the frames A and B preferably is provided with two loosely mounted or idle rollers 11 and 12 which lie on the outer sides of the strep as shown in Fig. 3, and are located opposite the cutting edges 13 of the blade 1d so as to hold the razor strop against displacement at the points thereof which are engaged by the edges of the razor blade. The two frames A and B are adapted to be locked securely together at their free ends in the position shown in Figs. 1 and 3, by means such as the spring catches 15, each of said catches being bent as indicated at 16 whereby said catches will grip'each other securely when the frame members A and B are moved together.

The blade holder, which is indicated generally by the reference letter C is pivotally connected with the frame A and consists preferably of a shaft 17 journaled at its opposite ends in lugs 18 formed on the frame A. The shaft 17 is provided, intermediate the. sides of the frame A with a flattened blade receiving portion 19 on which are mounted a plurality of positioning pins 20, which are adapted to fit through the perforations in the double edged blade so as to position, the same properly upon theblade holder. The blade is held in engagement with the positioning pins 20 and the blade receiving portion 19 by means such as the bar 21 which is pivotally connected at 22 with the portion 19. The means for locking the bar 21 in engagement with the portion 19 preferably consists of a longitudinally movable rod 23 which is mounted in a groove 24. formed in the shaft 17., At its inner end the longitudinally movable rod extends through an .ear or guide and engages the freev end of the bar 21 so as to hold the same locked in engagen'ient with the blade 14 so long as the bar 23 is pushed inward. It will be noted from Fig. 2 that when the frames A and B are .open, the blade holder 0 is entirely exposed, and by manipulating the rod 28 the blade can be easily and quickly placed in position.

The means for rocking the blade holder C preferably consists of the crank arm 26 which is formed integral with the shaft 17 and at its outer end is bent as indicated at 27 so as to fit into a slot 28 formed in the outer end of a crank arm 29 which is rigidly connected in any suitable manner with the main roller 1.

In order to hold the strop in proper relation to the blade holder, the frame A in addition to the idle rollers 11 and 12 is provided with an enlarged idle roller 30 which is disposed on the opposite side of the strop from the rollers 11 and 12.

The operation of the device is believed to be obvious from the foregoing description taken in connection with the drawing. When the blade is in position and the frames A and B are locked together, a movement of the strop 8 in either direction is transmitted through the loose sleeve 7 to the main roller 1 from which it is transmitted through the rigid arm 29 to the crank 26, connected with the blade holder C, thus causing the opposite edges of the blade to be moved into en gagement with the oppositely moving surfaces 9 and 10 of the strop 8 and thus simultaneously sharpened.

The stropping machine of the present invention is strong, simple, durable and inexpensive in construction as well as thoroughly efficient and practical in use.

What is clailned is A stropping machine for double edge blades comprising a main roller having end extensions, :1 pair of frames pivot-ally connected with said end extensions, an anchoring bracket connected with said extensions, a sleeve loosely surrounding said main roller, an arm rigidly connected with one end of said main roller and having a slot in its outer end, a blade holder having a shaft formed with a crank extension engaging said slot, interlocking spring catches for locking said frames in closed position, and a. razor strop extending through said frames and around said loose sleeve.

In testimony that I claim the foregoing as ELISHA \V. COLE.

Witnesses J. P. CAMPBELL, Geo. B. PITTS.

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