US1080981A

US1080981A - Razor-stropping device.

Info

Publication number: US1080981A
Application number: US73379112A
Authority: US
Inventors: Joseph Kebola
Original assignee: Individual
Current assignee: Individual
Priority date: 1912-11-27
Filing date: 1912-11-27
Publication date: 1913-12-09
Anticipated expiration: 1930-12-09

Description

J. KEBOLA.

RAZOR STROPPING DEVICE.

APPLIOATION FILED Nov. 27, 1912A Patented Dec. 9, 1913.

LuLL'MmA PLANOGRAPH Co., wAsHlN-roh', u4 c4 'Utr a RAZOR-STROPPING DEVICE.

Application filed November 27, 1912.

Specicaton of Letters Patent.

Patented Dec. 9, 1913.

Serial No. 733,791.

To all whom t may concern:

Be it known that l, JOSEPH KEBOLA, a citi- Zen of Austria, residing at New Britain, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Razor-Stropping Devices, of which the following is a specilication.

My invention relates to improvements in razor stropping devices, and the object of my improvement is simplicity and economy in construction and convenience and efficiency in use and it is particularly adapted for sharpening blades for safety razors.

In the accompanying drawing: Figure 1 is a plan view of my razor stropping device. Fig. 2 is a side elevation of the same. Fig. 3 is a sectional view on an enlarged scale on the line x a' of Fig. 1. Fig. 3a is a similar fragmentary view, with certain parts moved from the position shown in Fig. 3. Fig. 4 is a view similar to Fig. 1 of certain parts shown therein. Fig. 5 is a similar view of the same, with certain parts moved from the position shown in Fig, 4. Figs. 6 and 7 show different positions of some of the parts shown in Figs. 4 and 5. Fig. 8 is a sectional view on the line g/ g/ of Fig. 1. Fig. 9 corresponds to Fig. 2 and is on the same scale, with the carriage moved from the position shown in the said figure.

My razor stropping device comprises an elongated frame A on which is mounted a strap or strop proper B and also a carriage C provided with means for receiving and securing a blade D for a razor and having a handle 10 by which the said carriage C may be moved back and forth along the frame A and rovided with mechanism to be described for bringing the edge 11 of the blade into contact with the strop B as the said carriage is moved back and forth. The frame A comprises a pair of lateral members 12 formed of sheet metal strips on edge and suitably spaced and held in position by cross-bars 13.

Notches 14 are provided in the upper edges of the lateral members or side strips 12 and near the ends thereof for removably receiving the laterally disposed ends of end bars 15 to which are attached the ends of the strop B. At one of the ends of the side strips 12 shown as the front end there is provided a series of the such notches 14 so that a mating pair thereof may be selected for use according to the tension desired for the said strop B. At the front end of the side strips 12 there is provided a pair of pivot holes 16 one in each strip for a tension handle E to be described.

The carriage C comprises a U shaped or channel piece of sheet material having the cross member 17 extending across below the side strips 12 and engaged with the lower edges thereof and the lateral arms 18 extending upwardly from the ends of the cross member 17 and engaged with the outer lateral faces of the side strips 12 and having the upper ends 19 extending upwardly above the upper edges of the said side strips and provided in the said upper ends with centrally disposed pivot holes 20 for the driving shaft 21 and with a pair of holes 22 one in front and one in rear of the said shaft pivot holes 2O in which are secured short pins 23 on which are mounted guide rolls 24. Ears 25 extend downwardly from the middle of the cross member 17 of the carriage C in which is pivotally mounted the upper end of the handle 10.

Near each end of the shaft 21 and adjacent the side strips 12 there is rigidly mounted a grooved driving wheel 26. At the middle of the shaft 21 there is rigidly mounted a. backing plate 27 that is suitable to receivev and to support the blade D, and which is secured thereto by means of a sleeve or knuckle 28 surrounding the shaft 21. The backing plate 27 is essentially a hinge member, comprising the leaf 29 of plate-like form suitable to serve as the support for the blade D and the knuckle 28 corresponds to the middle knuckle of a hinge, except that it is rigidly attached in a suitable manner to the shaft 21 that serves as the pintle for the movable hinge member or clamping plate 30. rlhe said movable hinge member 30 comprises a pair of end knuckles 31 pivotally mounted on the pintle or shaft 21 and positioned one on each side of the middle or intermediate knuckle 28 and from which extends radially the leaf 32.

The

leaves

29 and 32 when in closed position are spaced suitably to be an approximate ft for the blade D and they are actually spaced so that the free ends will engage with the blade and clamping means are provided for clamping the said leaves to the blade. As shown the clamping means comprise a pair of laterally disposed lugs 33 extending upwardly from the lateral ends of the bottom of one of the leaves, shown as leaf 29 and overhanging the plate surface on the inner or blade side and spaced suitably therefrom to admit the thickness of the blade D, leaf 32, and wedge shaped clamping ends 36 of the bar 34 which constitutes the clamping means proper. The bar 34 is pivotally mounted by its middle on the outer face of the leaf 32 by means of a pivotal pin 35 so that the same may be?A swung around flush with the. outer surface cross-bar proper 40 of the tension device E, the ends of which are pivotally mounted in the holes 16 in the side strips 12 as already mentioned. The tension device E comprisesthe cross bar portion 40 and a handle portion 41 extending radially therefrom at about the middle thereof. As shown the tension device E is formed of a single piece of wire having the end portions in alinement and forming the cross-bar portion 40, the outwardly directed free ends being engaged with the holes 16, and the inner portion being formed into a loop forming the handle 41.

The cross-bar portion 40 constitutes a shaft on which are mounted, one on each side of the handle 41, the front ends of the driving belts 39. By rotating the. cross-bar 40, as by means of the handle 41, the end of the belt 39 secured thereto will roll up on itself or build u a or will unroll so as to vary the tension of tie belt 39 accordingly.

Intermediate the ends each of the belts 39 pass under the guide rolls 24 and over the upper periphery of the driving pulley 26 so that the belt is engaged with the greater part of the said upper periphery, or for nearly 180 degrees of the pulley surface.

Movement of the carriage C longitudinallyalong the frame A by means of the handle l0 carries with it of course the driving-pulleys 26, wherefore the relation of the said driving pulleys 26 and the belt 39 will vary as the movement mentioned is effected. It will be noted. that the effect of the engagement of the driving belts 39 with the pulleys 26y will be to tend to turn the shaft 21 so that the parts connected thereto are positioned o'n the upper side of the strop B in a direction that is the reverse of the particular longitudinal direction of movementl of the carriage C. The result of this condition will be that the blade clamping pair ofy driving belts 39. The: front ends of the belts 39. are secured to thel device composed of the relatively fixed member or backing plate 27 and the movable member or clamping plate 30 will be swung so that the edge 1l of the blade D will be brought into contact with the surface of the strop B by a rotary movement of the shaft 21. As such contact of the blade and the strop limits furtherrotary movement of the shaft 2l and the blade clamping device, it is evident that the result of further continued longitudinal movement of the carriage C along the frame A is toy drag the blade D along the strop B, and thereby eifect the stropping of the blade D desired. versal of the movement of the carriage C operates to bringv the opposite side or edge of the blade D into engagement with the strop B. Accordingly, by moving the car- A re- 1 riage C back and forth as by means of the During the stropping operation described the rear end of the frame A may be supported on any convenient support by means of the hooked end 42 and the front endy may be supported by ueans of the handle 41 of the tension device E whereby the tension ofthedriving belts 39 will be under control during the normal conditions of operation at. will, and may be changed at'will.

The movement described for effecting the stropping of the razor blade as the carriage is moved back and forth consists of flopping the blade back and forth by a movement of more than 180 degrees as the direction of movement of the carriage is reversed, the movement in each case being determined;v by the contact of the blade edge with the strop, and the stropping desired is effected by a continuation of the particular longitudinal movement of thecarriage. Illhe Hopping movement described is due tothe engagement of the driving belts with t-he driving wheels or pulleys as is also the tension or pressure of the blade edge in` its engagement with the strop. Accordingly, it is evident that a variation of the tension of the driving beltsby a change in the angular position of the. tension device will result in varying the degree of such tensionk o-r pressure asthe blade edge is moved along the strop.

I claim as my invention A razor stropping device comprising a frame having sidebars, a carriage slidably mounted thereon and having ak shaft, and a driving. pulley and blade holding devices on the saidt shaft, and a strop mounted on the said frame, a belt engaged with the said pulley, one end thereof being fiXed to one end of the said4 frame, and a combined frame support and tension device positioned at the other end. of the said frame and comprising asha-ft portionpivotally mounted between the said sidebars,andahand1e portion at the same time can be manipulated to extending il'l-dially fro? tie said slft pgr- Vary the tension of the said belt.

tion7 an t e other en o the sai elt eing attached to the said shaft portion, JOSEPH KEBOLA' whereby the said handle portion may be Witnesses:

grasped by the hand and serve to support SOFRICK KERLEYZA,

the corresponding end of the said frame and LOUIS M. SCHMIDT.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patente. Washington, D. C.