US976927A

US976927A - Razor-sharpening machine.

Info

Publication number: US976927A
Application number: US4?039109A
Authority: US
Inventors: William F Rundel
Original assignee: RUNDEL Manufacturing Co
Current assignee: RUNDEL Manufacturing Co
Publication date: 1910-11-29
Anticipated expiration: 1927-11-29

Description

W. F. RUNDEL. RAZOR SHAHPBNING MACHINE. APPLIOATIbN 1 11.21) 31:12.27, 1909.

Patented Nov. 29, 1910.

2 SHEETS-SEEET l.

4 ma 2 w M Q W. F. RUNDEL. RAZOR SHARPENING MACHINE.

APPLICATION FILED PEB.27, 1909.

Patented Nov. 29, 1910.

2 SHEETSSHEET 2.

Witneaaeo UNITED STATES.

PATENT OFFICE.

m n: I. BUNIDEL, .os ramron'r, NEW YORK, asaicmon T0 mm; mome- TUBING company, or nocnnsrnn, nnw Yonx, A coaronarxon or MW 2033.

nAzon-s mnrnnme imacmnn.

To all whom it may concern: 7 Be it known that I, WILLIAM F. RUNDEL, of Fairport, in. the county of Monroe and State of New York, have invented certain new anduseful Improvements in Razor- Sharpenin Machines; and I do hereby declare the ollowing tobe a full, clear, and

exact description-{of the same, reference being had to the accompanying drawings, forming a part of this specification, and to the reference numerals marked thereon.

, The present invention relates to razor sharpening machines, and it has for an object to provide a construction adapted to be used for sharpening any of the present commercial safety razor blades.

Another object of the invention is to provide a simple and effective means for shifting a blade holder on movements of the machine in opposite directions over a sharpener.

A further object is to provide an improved blade-holder formed to receive an main holder; Fig. 5 1s a auxiliary blade-holder which carries a blade not adapted to be held 'by the main bladeholder. a

A still further object is to provide an auxiliary blade-holder adapted to receive several forms of blades.

To these and other ends the invention consists of certain improvements and combinations of parts all aswill be hereinafter more fully described, the novel features being pointed out in the claims 'attheend' of the specification In the drawings; Figure l' is a topview of a razor sharpening machine embodying the present improvements; Figs. 2 and 3 are views of opposite sides'of the machine, the handle bein broken 'away at its lower end; F igzis a0ngitudinal section of the ma chine showing one type'of razor blade in the rspective view of one of theauxiha'ry hol ers; Fi 6' and 7 are perspective views of two bla esadapted' to be received-within the holder shown in Fig. 5; Fig; 81 is a transverse section of the mam holder showing the auxiliary holder illustrated-in Fig. 5 containing the blade shown in Fig. 6; Fig. 9' is a perspective view of another form ofi auxiliary holder with the blade which it is adapted to hold shown in position thereon, and Fig. 10- is a 1pers ective viewof still another form 0 ho der with the blade for which it, is adapted positioned' thereon. p

specim n n... aunt Patented Nov. 29, 1910. Application filed February 2'7, 1909. Serial No. 480,381.

In the present embodiment of theinvention there is employed a frame preferably comprising a' handle 1 secured to the under side of across piece 2 bye screw extension 3, said: cross p ece connecting upright side members 4 of the frame and preferably being formed in one piece with said side members which are bent laterally from. the fiat stock from which the frame is made. The side pieces 4 support the shar ener "dc which, in this instance, is in the orm 0 four rollers 5, 6, 7 and 8, the outer rollers 5 and 8' being arranged slightly above the rollers 6 i and 7 inorder that the sharpener 9,' in this instance in the form of a flexible strop, may be passed between 'them' in-themanner shown in Fig. 4. Fhis arrangement causes that portion thereof lying between the rollers 6 and 7 to be flat and taut when the strop is placed under tension while the flexed portions will cause the rollers to rotatedue to the friction thereon. The rollers 5, 6 andi8 preferably turn on pins 10 which are ri 'd with the main frame-and connect the side pieces 4- while the roller? is journaled in latter tor the purpose to be hereinafter set -forth.

' the side pieces and mayproject beyondthe 1 Operating to one side of the plane of the rollers 6. and 7 and ina plane transverse to I said plane and between said rollers is a blade j holder which, this instance, is mounted to -oscil-la-te so as to carry a'blad'e therein from i one side of its axis to tlie'o positeside. In

order to'eifect .the oscillatlo'n of the bladeholder the latter is connected to the'roller 7 3 so that when said roller moves-in one direc- .tionunder the action of the sharpener the 5 blade will be caused to bear. upon the strop on; one side of the axis of the oscillatory holder and when the roller is shifted in the other direction the, holder will also be shifted so as to bear on the strop on the. opposite side of saidlaxis. v

- The connectiori between the roller 7 and the oscillatory blade holder is preferably in the form ofa pairof links 11 and 12 of equal length and eccentric'all connected to both the holder and the rol er at the same dis-' tances from the turning axes of saidparts, the points of connection of one link'however being shifted relatively to those of the other at distances about the axes less than 180 so that it is impossible forsaid parts to strike a' dead center. To permit the eccentric conon the holder having the same. angular re- I embodies a shaft 14 to which the'arms 13 of the holder are secured. Carried by thisneetion of the links with the holder and the roller, said parts are provided at each end with arms l3arranged beyond the sides of the frames, the armsofthe roller being arranged at an angle to each otherandthose' lation. r

The main razor blade holder preferably shaft is a pair of jaws which may be made from spring material and formed wlth opposed longitudinally extending grooves, the

walls 15 of which preferably converge toward the outer ends of the jaws and have shoulders 16 at their inner ends. The shape of these grooves permits the holder to receive a blade of wedge-shaped cross-section,

also have opposed longitudinalgrooves 18 v of curved cross section. These clamping the jaws of the'main holder, the hinge there.

portions serve for securing blades of other shapes, as will be nowpolnted out.

In order to permit the main holder to receive blades having other shapes there .provided one or more auxiliary holders which have different means for engaging and retaining the blades, varying with the shape or form of the blade. The auxiliary holder may embody a pair of jaws 19 hinged together at 20 along a line parallel with the edges of a blade held thereby. This .holder clamps. a blade and is itself clamped between of being clamped and supported by the grooved clamping portions 18.

.In Figs. Sand 8 the jaws of the auxiliary holder are formed of t\ '0 pieces of sheet material stampedor pressed outwardly near the hinge 20 so as to the outer edges 0 the jaws and grooves or depressions 25 to receive an enlargement 21 onthe blade 22, longitudinal shoulders on the bladebcing engaged by shoulders formed by the inneredges of the grooves to retain the blade in the holder. When in the main holder the enlargement fornfed on the auxiliary holder lies in the-grooves 15 and the shoulders 16 are engaged by the shoulders formed on the rear face of the enlargement on the auxiliary holder, while the hinge lies in grooves 18 and the outerends of the auxiliary jaws are clamped by the forward ends of the main jaws. One jaw may also be provided with projections 24 in the flat portions 25 in advance of its enlarged or depressed.-

preferably are ofa common form but 1provide flat faces 25? near.

ortions 25 to cooperate with the. 5 ends of t eblade 22 or with the-walls of the notches 2'6 in the blade, opposite jaw being recessed at 27 to receive the projections.

In Fig. 9 the jaws of the auxiliary holder are flat and two' pairs of projections or

shoulders

28 and 29 are provided on one jaw, enepair 28 being nearer the outer edge of said jaw than the other pair 29 which has its members closer together than the first named pair. This holder is adapted for a blade 30 of the form illustrated. In Fig. 10 the holder is the same as shown in Fig. 9 except that the projections 31 are larger and pass through openings in the blade instead of coiiperating with the edges of the blade.

In operation a blade is inserted directly into the main holder from one side of the jaws of the latter, or it is placed in an auxiliary holder which is introduced between the jaws, the strep preferably having first been threaded between the guide rollers as shown in Fig. 4. When the strop is secured at both ends, the handle 1 is grasped and the machine is moved back and forth 'on' the strep which acting on roller 7 causes the lattcr to turn or oscillate and in turn transmit its motion to the blade holder, thereby presenting to the strep firstone side of the blade edge and then the other.

A machine constructed in accordance with shown in Fig. 7,'t-he 4 this invention is simple to operate and inexpensive to manufacture. It is'adapted for sharpening any of the present commercial safety razor blades, thus adding life. to blades which are now-thrown away.

I claim as my invention:

1. The combination with a main holder having a pair of jaws formed with opposed grooves and clamping portions on the inner and the outer sides of the grooves, of an auxiliary holder embodying a pair of jaws formed with enlarged portions between its inner and outer ends lying in the grooves and with portions on opposite sides of the enlarged portions clamped bythe inner and outer clamping portions of the main holder.

2. The combination with a main holderembodying a pair pf'jaws formed with 0pposed grooves, the walls of which converge toward the outer ends of the jaws and have shoulders formed at their inner ends, said Ill jaw-s being provided with opposed'grooves in rear of the shoulders, 'tof a removable auxiliary holder embodying a pair of hinged jaws formedwith'enlarged portions between the hinge be: of the inner groovesand the enlarged portion being..re.---

the hinge and their outer ends, ing engaged 'by the walls ceived withiirthe outer grooves and engagmg the shoulders.

3. The combination withaJnain-hdlder embodying a pair of jaws formed-with opposed grooves converging towardtheouter ends of the jaws, saidjaws being provided with clamping portions in rear of the grooves, of a removable auxiliary holder embodying a pair of jaws engaged by the clamping portions of the' main holder on opposite sides of the grooves of the latter.

4:. The combination with a main holder embodying a pair of jaws formed with opposed grooves, and opposed grooves in rear of the first named grooves, of an auxiliary holder having two hinged jaws, the hinge lying in the rear grooves and the forward portions of the auxiliary jaws being engaged by forward portions of the main jaws.

5. An auxiliary razor blade holder embodying a pair of jaws hinged together along a line parallel-with the edges of the blade in the holder, one of said jaws having a shoulder thereon to coiiperate with a shoulder on a blade tometain the latter in a certain position between thejaws.

6. An auxiliary blade holder embodying a pair of'jaws hinged together along a line parallel with the edges of the blade in the holder, one of said jaws being provided with a longitudinally extending shoulder for cooperation with 'a shoulder on the blade to retain the latter between the jaws.

7. The combination with a main holder having opposed grooves on their inner faces formed by walls converging toward the outer ends of the jaws, of an auxiliary holder embodying two hinged jaws held betweenfthe main jaws, one of said hinged jaws being provided With a longitudinally extending shoulder.

8. An auxiliary blade holder embodying a pair of jaws hinged together and formed with opposed fiat surfaces near their outer edges, and depressed portions or grooves 1n 1 rear of the fiat portions.

9. An auxi liary blade holder embodying apair-lofja'ws formed with opposed flat surfaces near their outer edges and grooves or depressed portions in rear of the fiat portions, one of said fiat portions having projections near opposite sides thereof and the other having recesses to receive said projections.

10. The combination with an oscillatory blade holder, and a sharpener guide arranged in proximity thereto embodying an oscillatory roller, of a pair of links of equal length eccentrically connected to the roller and the holder, the points of the connections of said links being the same distance from the centers of turning of both parts but those of one link bein shifted relatively to those of the other a distance less than 180.

11. 'lhe-combination with an oscillatory blade holder, and a sharpener guide arranged in proximity thereto embodyin an oscillatory roller, of arms extending rom opposite ends of said rollers and said blade holder, the arms on the roller being arranged at an angle to each other' less than 180,

while those on the holder have the same angular relation, and links of equal length con- WILLIAM F. RUNDEL.

Witnesses:

HENRY W. Hie-LL, HAROLD H. SIMMs.