US1326101A

US1326101A - Razor-stropping device

Info

Publication number: US1326101A
Authority: US
Publication date: 1919-12-23
Anticipated expiration: 1936-12-23

Description

' :H- I. AND E. R. SCHMIDT.

RAZOR STBOPFING DEVICE- urucmou FILED FEB. 5. m1.

1,326,101. PatentedDeo. 23,1919.

.INVENTORS: WITNESS w L/JZ 0% L b 1" 5 TORNE Y To all whom it may concern:

* UNTTE rare earnnr names.

HENRY J. sonlurnr AND ELDEN a. SCHMIDT, or wInEsBUnG, orrIo.

B AZQR-STRO PPING DEVICE.

Specification of Letters Patent.

Patented Dec. 23, 1919.

Application filed February 5,1917. Serial No. 146,573.

7 Be it lmown that we, HENRY J. SCHMIDT and ,ELDEN R. SCHMIDT, citizens of the United States, residing at Winesburg, in the county of Holmes and State of Ohio, have invented certain new and useful Improvements in Razor-Stropping Devices, of which 7 the following is a specification.

The invention relates to razor stropping implements of the type designed to facilitate the operation of manually stropping a razor blade; and the general object of the improvement is to provide a device which will enable an operator to readily'produce without the exercise of special skill, an extremely keen cutting edge. 1 v

A further object of the improvement is to provide a device which will guide the blade in the stropping operation so as to utilize the entire width of the strop and prevent it from slipping oif from and cutting the strop. I

The objects of the invention thus set forth in general terms, together with other and ancillary advantages, are attained by means of a blade holder and a guide rod movably mounted adjacent to the back of the holder having a limited lateral movement; whereby when the bladein the holder is drawn to and fro upon the upper surface of the strop' .in the usual manner, the movable rod slidably engaging with the under surface of the strop, serves as a guide to enable the opera tor to hold the blade uponthe strop at the proper inclination and to prevent the blade from being turned onits edge at the completion of a stroke. A preferred embodiment of the improvemient is illustrated the accompanying drawings forming part hereof, in which- Figure 1 is a perspective view of the razor stropping device mounted in operative position upon a strop;

Fig. 2, is anend elevation of the device mounted upon a strop, the device being shown in full lines for movement in one direction and in broken lines for movement in the-opposite d1rect1on;.and

. the holder.

the ends of the holder and a guide bar or rod 3 having crank arms 6 and 7 pivotally mounted in the holder arms for supporting the. rod or bar on the holder for movement laterally thereof to a limited extent from one side to the other of the plane of the holder.

Any suitable form of holder may be employed for holding the razor blade for the stropping operation. Herein we have shown a holder 1, more particularly adapted for holding the blade of an ordinary straight razor. Said holder consists of a hollow V or wedge shaped member formed from a single strip of metal whose free longitudinal edges terminate at the forward or thin edge of the member and are adapted to be sprung apart and to receive between them the razor blade which is inserted into the holder. Preferably a leaf spring 4 is removably mounted in the holder in its wider portion, which spring is bent or bulges forwardly near its central portion toward the thin edge of the holder, and thus serves to firmly hold the razor blade in position in In case the razor blade to be inserted is abnormally large, the spring may be readily withdrawn to permit the insertion of the larger blade. v

The

arms

2 and 2 at the opposite ends of the holder 1, for supporting the crank arms onthe guide rod 3, may be formedin any suitable manner but are preferably formed equal in length to the length of the holder .and is riveted or otherwise secured on the back wall thereof.

l The guide rod 3 is preferably formed in tegral with the guiding and supporting crank arms 6 and 7 which are journaled in openings 8 providedin the arms 2 and 2 a short distance from the back of the holder. The guide rod is thus adapted to be, swung or oscillated upon the crank arms so as to be movable laterally from one side to the other ofthe plane of the holder, and, together with the crank arms 6 and 7, and the bar 5, forms a guideway or slot adapted to receivethe StIOp and guide the movements of the holder and blade therein as they are drawn to and fro upon the strop. The

f blade is thus prevented from slipping olf from the strep duringa stroke so as to out the strep, and the nu.

ling action of the? crank arms 6 and 7 along the side edges of the strop holds the razor blade in proper position upon the strop, whether it is moved squarely to and fro along the strop or in a diagonal position thereon.

Means are provided for limiting the extent of lateral movement of the rod 3 so as to enable the operator to uniformly hold the blade at the proper inclination upon the strop, and thus to produce a uniformly beveled edge upon the blade; such means being adjustable so that the holder may be inclined at various angles in order to accommodate razor blades of varying widths. In the present instance, the means employed for this purpose consists of a crank arm 9 movable'by the guide rod, a stop finger 10 fixed with reference to the holder, and a link 11 movably connecting the crank arm and finger together and having an adjustable stop 12 thereon for engaging with the finger.

The crank arm 9 is formed integral with the crank arm 7 and extends forwardly and outwardly therefrom on the outer side of the supporting arm 2; and the stop finger 10 is formed integral with the arm 2 by extending the same a slight distance rearwardly and then outwardly at right angles.

The link 11 is formed from a short strip of metal and is pivoted at its forward end to the crank arm 9 and at its rear end is provided with a longitudinal slot 13 in which the outer end of the finger 10 is adapted to operate so as to permit a limited pivotal and longitudinal movement of the link; and the stop 12 on the link is in the form of an eccentrically mounted disk or cam pivoted to the outer side of the link at its rear end slightly forward of the slot 13, and is adapted to be rotated so that its periphery will extend various distances rearward of the forward end of the slot, and thus limit the longitudinal movement of the link with reference to the stop finger and, through the link and the cranks 9 and 7, the movement of the guide rod. The cam stop 12 is so pivoted to the link as to frictionally engage therewith in order to retain its position after it has been adjusted; and

the periphery of the cam is preferably notched in order to permit of a more per feet adjustment of the parts.

In operation, the strop is inserted between the holder and the guide rod 3, and the cam stop 12 is adjusted to permit the guide rod to shift from one side of the holder to the other sufliciently to permit the proper inclination of the holder in each direction to produce a uniform bevel upon the edge of the blade as it is drawn to and fro upon the strop inthe usual manner; it being evident that the greater the lateral movement of the guide rod, the greater will be the inclination of the holder. Furthermore, the guide rod prevents the operator from turning the blade upon its edge at the end of a stroke, which may be injurious both to the edge of the blade and the strop.

For reducing the frictional engagement of the holder with the strop, the bar 5 is made slightly wider than the lower wall of the holder and the sides of the holder may be curved inwardly a slight distance as shown in Fig. 2.

We claim:

1. A razor stropping device including a blade holder, and a guide rod adjacent to the back of the holder having crank arms on its ends pivotally connected with the holder, said rod having a limited swinging movement from one side to the other of the plane of the holder.

2. A razor stropping device including a blade holder, at laterally movable guide rod mounted adjacent to the back of the holder, and means for variably limiting the lateral movements of the guide rod.

3. A razor stropping device including a blade holder and a guide rod having crank arms pivoted adjacent to the back of the holder swingably supporting the rod, and means for limiting the swinging movements of the rod.

at. A razor stropping device including a blade holder, a guide rod, pivoted arms for swingably supporting the rod adjacent the back of the holder, and means for variably limiting the swinging movements of the rod.

5. A razor stropping device including a blade holder having rear arms at its opposite ends'and a guide rod having crank arms pivoted to said'holder arms adjacent the back ofthe holder and adapted to swing laterally to a limited extent from one side of the holder to the other.

6. A razor stropping device including a blade holder having rear arms at its opposite ends, a guide rod swingably supported by said arms adjacent the back of the holder, and means for variably limiting the swing ing movement of the rod.

7. A. razor stropping device including a holder having rear arn'is at its opposite ends, a guide rod swingably supported by said arms a short distance rearward of the holder, a crank arm movable by the guide rod, a stop finger fixed to the holder and a link movably connecting the crank arm and stop finger together and having a stop thereon for engaging with the stop finger to limit the swinging movement of the crank arm and guide rod.

8. A razor stropping device including a holder having rear arms at its opposite ends, a guide rod swingably supported by said arms a short holder, a crank arm movableby the guide rod, a stop finger fixed to the holder and a link movably connecting the crank arm and finger together having a cam disk thereon distance rearward of theadapted to engage with the stop finger for limiting the swinging movement of the crank arm and guide rod. 7

9. A' razor stropping device including 7 means for holding a blade in engagement with one surface of a strop, and a guide rod having pivoted arms for supporting the rod in sliding engagement With the other surface of a strop and for guiding the blade holding means upon the strop, said rod having a limited lateral movement With reference to the holding means to permit a movement of the holder in either direction with the edge of the blade in engagement with the strop.

10. A razor stropping device including a blade holder, guiding means for the holder pivotally supported adjacent to its back and guiding means.

HENRY J. SCHMIDT. ELDEN R. SCHMIDT.