US1983739A - Razor stropper - Google Patents

Description

Dea. il, 1934.

H. L.. DAzEY RAZOR sTRoPPER l -Sheet l Filed March 2, 1932 2 Sheets Dea M, 1934. y HL, DAZEY A1,91%?739 RAZOR ySTRPPER Filed March 2, 1932 2 Sheets-Sheet 2 Patented Dec. 11, 1934 UNITED STATES PATENT GFFICE Y RAZOR S'IRorrlmy lHarry L. Dazey, Clayton, Mo. Application March 2, 1932, Serial No. 596,204

4 Claims.

hereinafter disclosed.

An object ci the invention is to provide a convenient and compact device for stropping razor blades of the safety razor type, which includes spaced stropping members designed. to reciprocate in opposite directions ator, whereby the from a single actublade edge is alternately f stropped in one direction and then in the other,

the edges or the bla de alternating with thereciprocation of the stropping means.

Another object of the invention is to provide a razor stropper in which the stropping elements are interchangeable t o present stropping surfaces such, for example, as

leather in one instance and a honing stone in another instance.

Another object of the'invention is to equip a device of the class described with adjusting means whereby the tension the stropping element may set.

Additional` advantages of the blade against be predetermined or of the construction will to those skilled in the art from the following detailed description, taken in connection with the whichaccompanying drawings, in

Fig. 1 is a plan View of the case in which the stropping mechanism is mounted.

the same element'.

Fig. 3 is a plan view with the case cover in extended position.

Fig. l is a section o n the line 4 4 of Fig. l.

Fig. 5 is a section on the line 5-5 of Fig. 1.

Fig. 6 is a section on the Fig. 'l is a plan view of line 6-6 ci' Fig. 2. a supporting frame removed from the structure.

n Fig. 8 is a side view FigQQ is a detail stropping element.

Fig. 10 is a view o of the saine element. view oi the frame for the f the stropping element removed from the frame.

In the embodiment of the invention illustrated in the drawings, the construction is shown as includingV a substantially rectangular case having a bottom section 1 and a top section 2 hinged at 3 and arranged to be latched together by a latch mounted in brackets 9 formed at the junction of i ment.

the arms of the members 'l'. The inner face of the bottom wall of the case is formed with spaced lugs 10 on either side, and the lower edges of the members 5 and 6 are arranged to seat in the channel formed by said lugs. Leaf springs 11 attached to the inner face of the top of the case are positioned so that their free ends bear against the top face of the members 5 and 6 and thus hold the frame in position in the case. The member 5 is provided with a horizontal slot 12, and each of the members 5 and 6 has cylindrical openings 13 therethrough forming bearings for the blade holder.

The blade holder comprises a cylindrical hub 14 and a semi-cylindrical section l5 having a flat plate on which there are a number of studs 16 arranged to project through the holes in the razor blade 17. The section constitutes one half of a cylindrical shaft, which includes the hub 14, the member 15 and a semi-cylindrical section 18, the inner face of which is concave so that, while the section 18 remains stationary with the hub, the section-l5 may be drawn outwardly through an opening 19 in the side wall of the case. The device may be loaded with the blade, therefore, by withdrawing the member l5, seating the blade on said member with the studs 16 extending into the openings in the blade, and the member 15 then moved inwardly into alinement andregistrationwith the upper section 18- of the shaft. Extending longitudinally through the members 5y and 6, respectively, and projecting at each side thereof are rods 20 and 21. The rods 20 are in horizontal alinement and spaced from the `rods 21, which are also in horizontal aline- The upper rods 20 constitute a support for the upper frame and the rods 21 constitute a support for the lower frame.

The frames in which the stropping elements are supported arev duplicate in' construction, 40 which construction will be best understood by reference tol Figs. ,9 andI 10. These trames nclude a rectangular member 22 having lugs 23 formed at each' corner, the lugs on each side of the frame having alinedopenings adapted to be mounted over and' to slide upon the rods 20 and 21, respectively;

Within theA frame 22 a stropping element -is mounted. The stropping element per se includes 50 an intermediate plate 24 upon the opposite side or" which is secured a stropping medium; for example, a layer of leather 25 is secured toI one face of the plate 24 and a layer of honing stone 26 is securedA to the' opposite face of the plate. 55

The plate projects beyond the edge of the layers 25 and 26 and is adapted to be seated in and secured within the frame 22, for example, by spring pins 27 extending through opposite side walls of the frame and seating into appropriate recesses in the plate 24. The stropping element may, therefore, be removed from the frame and reversed in order to bring either the leather layer 25 or the honing stone layer 26 into operative adjustment with the blade.

The frames, asV above indicated, are mounted on the rods 20 and 21 respectively, the upper frame on the rods 20 and the lower frame on the rods 2l. The bearings 23 of the frame are on opposite sides of the members 5. and l6, so

that the frames may reciprocate with a parallel rectilinear motion; that is to say, the frames' move in a parallel plane to and fro upon` the supporting frame of the device in opposite directions.

The actuator for the movement of the frame comprises a handle 28 connected to and extending upwardly from the upper frame, the handle 28 operating in a slot 29 in the top wall of the case. The surface of the wall of. the case surrounding the slot 29 is preferably channeled to forni the recess 30, so that the top face of the handle will be within the general top plane of the case. It is obvious that the handle may be readily engaged by the operator and moved back and forth in the slot 29, thus imparting to the upper frame a reciprocating motion. This reciprocating motion of the upper frame is utilized to move, at the saine time, the lowerV frame in Vthe opposite direction. The connection between the frames includes flexible members 31 in the form of wires or bands connected to the upper and lower frames and extending respectively over the rollers 8.

In order to reverse the angular position of the blade holder with each reciprocation of the frames, actuating means for the shaft that supports the blade is provided. It will be noted particularly by reference to Fig. '7 that the ends of ythe blade supporting shaft extend beyond the members 5 and 6, respectively. A generally U- shaped spring 32 is connected at its intermediate section to the upper frame and, in the embodi- 1 ment shown, by a stud 33 that projects through the wall of the frame and supports the handle 28. The free ends of the spring member eX- tend laterally of the frames and bear against the extending ends of the blade supporting shafts, respectively. The frictional engagement between the free ends of the spring and the shaft rock the shaft in conformity with the direction of movement of the frames. The upper and lower edges of the blade are, therefore, brought alternately into contact with the stropping surface of the upper and lower stropping elements.

In order that the angular position of the blade may be reversed before the stropping elements are moved in a reverse direction, it should be noticed that the stud 23 that supports the spring element is mounted in a slot 34 in the frame of the upper stropping element and, therefore, that there will be a movement of the spring in the reverse direction before the stud contacts with the edge of the slot and moves the frame. This initial movement ofthe spring before the movement of the frame reverses the angular position of the blade, so that the edge of the blade will be in the proper relationship to the stropping element before the stropping element moves in the reverse direction. This obviously will occur at each end of the stroke of the frame as there will be an initial movement of the stud and the spring before the stud serves to move the stropping element frame.

In order to determine the degree of pressure of the blade edge with the stropping surface, the tension of the free ends of the spring member may be regulated by a small set screw 35 that extends through the bottom of the case, the inner end impinging against the spring blades. Thus, the extent of frictional engagement of the spring member with the shaft supporting the blade may be controlled to exert a heavy or light tension of the blade with the stropping elements.

From the foregoing description, it will be understood that I have provided a compact and efficient stropper in which the stropping operation is performed by the alternate contact of the blade edges with the upper and lower stropping members, and in which the stropping members move in true horizontal planes with the blade presented to the stropping surfaces at an obtuse angle, so that the blade may be sharpened uniformly and rapidly. It will also be observed that the character of the stropping medium may be readily changed by reversing the stropping means in the frame, so that the blade may be honed on a honing stone surface and then finished on a stropping leather surface.

I am aware that the invention may be modiiied within the limits of the appended claims without departing from the spirit and scope of the invention. What I claim and desire to secure by Letters Patent is:-

1. In a device of the class described, the combination of a frame, rollers mounted at opposed points in the frame, a rocking shaft intermediate of said rollers, means for connecting a blade with said rocking shaft, reciprocating stropping devices mounted above and below said frame, flexible members connecting said stropping elements and operating on said rollers, a handle for imparting movement to one of said frames and thereby moving the other frame in the opposite direction, and a resilient bar connected with one of said frames and bearing against the rocking shaft for actuating said rocking shaftto bring the blade supported thereby into alternate engagement with said stropping elements.

2. In a device of the class described, the combination of a support, stropping elements mounted for reciprocating movement in said support, means connected with one of said stropping elements for reciprocating the stropping elements, a rocking blade holder between said stropping elements, a spring tension device for actuating said blade holder incident to the movement of said stropping elements, and means for adjusting the tension of said device to predetermine the degree of impingement of the blade against the stropping elements. y

3. A razor blade stropper comprising in combination stropping elements arranged in parallel planes and movable in reverse directions alternately, connecting means whereby the elements are moved in unison, a razor blade holder mounted for rocking position between said stropping elements, and a slidable member for initially changing the angle of said blade holder to bring opposite edges of the blade into contact respectively with said elements, and by a loose connection therewith to later engage and move one of said elements. v

4. A razor blade stropper comprising in combination stroppng elements arranged for reciproeating movements in opposite directions and in parallel planes, connecting means whereby the elements are moved in unison, a rocking blade holder supported between the stropping elements, and a spring tension device for actuating said blade holder by reciprocaton of the device, said device having a loose connection with one of said elements whereby its reciprocaton will initially rock said support and then engage said element to move it and thereby to reciprocate both elements. 4

HARRY L. DAZEY.

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