US1075665A - Stropper. - Google Patents

Description

C. M. MOORE.

S'IROPPER.

APPLICATION FILED SEPTJ, 1912.

1,075,665. Patented Oct. 14, 1913. 2y I v I P 5 FIBL6 I 1 "I T N ESSES CLARENCE M. MOORE, OF MI'ITINEAGUE, MASSACHUSETTS.

STROPPEB.

Specification of Letters Patent.

Patented Oct. 14,1913.

Application filed September 7, 1912. Serial No. 719,046.

To all whom it may concern:

Be it known that I, CLARENCE M. Mooim, a citizen of the United States, residing at Mittineague, in the county of Hampden and State of Massachusetts, have invented a new and useful Stropper, of which the following is a specification.

My invention relates to improvements in mechanical devices for stropping safety-razor blades, and consists in general of a pair of rotary stroppingmembers arranged for longitudinal reciprocation, and means to support a blade in stropping position and to oscillate the same so as to carry said blade from one stropping member to the other, together with suitable actuating mechanism for both stropping and bladesupporting means, and such auxiliary parts and members as may be needed to complete and perfect the stropper, all as hereinafter set forth.

The object of my invention is to provide a comparatively simple, but highly efiicient device or machine, actuated by a crank for easily, quickly, accurately and thoroughly stropping razor blades on both sides, which blades are adapted for various kinds or makes of safety razors. Another object is to provide the stropping devices with stropping surfaces which are incomplete circumferentially, so that a saving is effected in the leather or other material which comprises such surfaces.

Other objects will appear in the course of the following description.

I attain these objects by the means illustrated in the accompanying drawings, in which- Figure 1 is a. top plan of a practical embodiment of my invention; Fig. 2, a lefthand end elevation of the stropper as it appears in the preceding view; Fig. 3, a vertical section taken on lines 3-45, looking toward the right, in Fig. 1; Fig. 4, a vertical section taken on lines 44, looking toward the right, in Fig. 1; Fig. 5, a longitudinal section through one of the rotary and reciprocating stropping devices,such section being taken through the rear stropping device as it stands in Fig. 1; Fig. (3, a similar section, but leaving the sleeves in elevation and showing the revoluble members after they have made one-half of a revolution from the position which they occupy in the rear stroppiiigdevice in Fig. 1, or

showing such members as they appear in the forward stropping device in said view; Fig. 7. an isometric view of a holder for the blade of a Gem safety razor, and Fig. 8. an isometric view f a holder for the blade of a Star safety razor.

The holder shown in the general views, or in Figs. 1,2 and 3, is for the blade of a lillette safety razor.

Similar figures refer to similar parts throughoutthe several views.

In the embodiment of the invention, as herein illustrated and described, a suitable frame is provided to support the various parts and members, and such frame coniprises a floor 1 and two end pieces 2 and 5. Said end piece 2, which is at the left-hand end of the floor l, is low and has rising from the front and rear ends thereof two arms or uprights 6.

()ii the inside of the end piece 5 near the top is a train of gears which comprises a driving gear 7, an intermediate gear 8, and two driven gears 9. The gear 7 is mounted loose on a stud 10 set in the end piece 5 and provided on the end which is outside of said end piece with a crank 11 by means of which the entire mechanism of the stropper is actuated. The intermediate gear 8 is mounted loose on a stud 12 which is also set in the end piece 5. The driven gears 9 are each mounted tight on a shaft 13 which has one end journaled in the end piece 5 and the other end journaled in one of the uprights 6 -or in a cap 14 that is rigidly attached to such uprights. The arrows in Fig. 4 show the normal and proper directions of rotations of the several gears in the train just referred to. The axes of the shafts are in the same horizontal plane.

The caps 14 are screwed into the uprights 6, and have screwed on to their inner terminals sleeves 1515 which are mounted on the shafts 13 and in which the latter are free to revolve. The sleeves 15 and the caps 14 are screwed firmly against opposite-sides of the uprights 6 and in this manner said sleeves and uprights are rigidly secured in place and held against rotation. The righthand or inner end of each sleeve 15 is cut diagonally or beveled as shown at 16. A second sleeve 19 is mounted on each shaft 13 and is keyed to such shaft, as shown at 20. The left-hand or inner end of each sleeve 19 is cut diagonally or beveled, as shown at 21,

.the left-hand end members to correspond with and engage the beveled part 16 of the sleeve 15 which is on the same shaft with said sleeve 19. It will be seen, therefore, that, since the sleeves 19 revolve with the shafts 13 they must be reciprocated on said shafts provided the beveled ends 21 thereof be retained in contact with the beveled ends 10 of the sleeves 15. Such contact is maintained by means of springs 22 mounted on the sleeves 15 between pins 23, set in said sleeves adjacent to their inner ends, and of the stropping devices described below.

There are two of the above-mentioned stropping devices and each consists, in addition to the shafts and sleeves already described and which may be said to constitute parts of such devices, of a semi-cylindrical block 24;, a stropper proper 25, of leather or other suitable material, placed over the convex surface of said block and having its longitudinal edges carried inward over theflat inner surfaces of said block, confining or fastening strips 26 for the inturned edges of said stropper, such strips being secured to the block by means of screws 27 which pass through the stripsand stropper into the block, a cover-plate 28 which closes what would otherwise be the exposed sides and edges of said strips and the heads of said screws, and end caps 29-29 between which the block and interior attached members are confined and to which said blocks are rigidly fastened, being fastened in the present case by means of screws 30. The blocks 24 are cored or hollowed to accommodate the springs 22 and the pins 23, and the coverplates 28 are also constructed for such aecommodation. It is the left-hand caps 29 against which the corresponding ends of the springs 23 bear. The right-hand caps 29 are integral with or rigidly attached to the corresponding ends of the sleeves 19.

It is clearly to be seen, now, that when the gearsnre revolved by means of the crank 11 in the directions of the arrows in Fig. 4, the stropping devices will be revolved, through the medium of the shafts 13, the keys 20 and the sleeves 19, in the directions of the arrows shown in Fig. 2, and that at the same time said devices will be actuated on said shafts first in one direction, as to the left, and then in the other direction, as to the right, owin t0 the fact that the' beveled ends 21 of said sleeves ride on or bear against the beveled ends 16of the sleeves 15, the parts being under the influence of the springs 22. The present arrangement is such that the two stropping devices move longitudinally simultaneously but in opposite directions, andthat when one of such devices presents its stropper 25 entirely be- Iowa the horizontal plane of the axis of such devlce the other device presents its stropper 25 entirely above the corresponding horizonbase capable of sliding into said tal plane or the horizontal plane of the last-mentioned device. Then again it will be observed that when one stropping device, the rear one in the present case, is at the left-hand end of its travel, the stropper thereon is entirely below the before-mentioned plane, and that then the other device, the front one, is at the right-hand end of its travel with the stropper 25 thereon entirely above the horizontal plane of the axis of said last-mentioned device. One-half of a revolution changes the relative positions of the stropping devices so that they occupy the other extreme positions, or each occupies the position which corresponds to that previously occupied by the other.

Rigidly secured on the shafts 13 just inside of the gears 9 are two cams 31 which are alike but arranged on said shaft so that one compensates for the movement imparted by the other, or, in other words, so that the action of one is in exact accord with the action of the other and either imparts or permits the same amount of motion permitted or imparted by its companion. Mount-ed with its head between the cams 31 and designed to be oscillated by such cams is a rocker 32. The rocker 32 is mounted on a stud or screw 33 set in the end piece 5. A pin 34 projects from the rocker 32 above the pivot 33 and a bent spring is mounted at the top on said pin. The twobranches of the spring 35 extend downwardly on opposite sides of a rod 36 which extends between the end pieces 2 and 5 in the center but near the floor 1, and the lower terminals of said spring are received between two lugs 37, as clearly shown in Fig. 4, which lugs are parts of a keeper 38 that is mounted on said rod. As the rocker 32 is oscillated by the cams 31 the spring 35 is also oscillated and imparts movement to the keeper 38, through the medium of the lugs 37, rocking said keeper on the rod 36 and exerting a certain amount of yielding force thereon.

The keeper 38 comprises a channel member having converging longitudinal sides and being provided at the ends with downwardly extending arms 39 and 40 which are mounted directly on the rod 36. The lugs 37 extend to the right from the base of the arm 40.

The keeper 38 is designed and adapted to receive a blade holder which has a flaring keeper. In the first three views a blade holder is shown which comprises a flaring base 41 that fits the keeper 38, and two arms 42 that rise from the ends of said base and have at their upper terminals heads 43 in which there are rectangular pockets to receive the ends of two clamping strips 44 and 45 between which may be securely held a Gillette blade,

illustrated at 46. The Gillette blades each have pin-receiving openings therein, consequently the clan'iping strip ll is provided with a pair of pins 47 arranged to enter two of the openings in the blade i6, and the clamping strip has holes therein positioned to receive said pins after they have passed through said blade. The arms l2 are resilient and thus enable the clamping strips e l and -43 to have their ends inserted in the heads 43 and to he removed therefrom.

To practice the blade 46 is placed between the clan'iping strips a4 and 45, then said strips at one end are inserted in one of the heads 13, and lastly the strips at the other end are inserted in the. other head 13, the arms 42 being, sprung apart sutliciently to enable this to be. done. \Vhen it is desired to remove the blade 46 it is simply necessary to spring apart the anus 42, remove the clamping strips, separate such strips, and take away the bhide.

ln Fig. 7, I show a spring holder t for a (iQlll bladcetl, and in Fig, tl a similar holder 50 for a. Star blade 5L In each of these cases the holder has a base which tits the keeper 238 so that such holder can he slipped into said keeper and removed therefrom. at vill, as is the case with the all of the holder for th? lillettc blade. The holders -18 and 30 ditl'er only in respect to the actual clamping members for the blades, which members differ to the extent necessary to enable them to lirmly grasp the particularblade for which they are designed. In either case the resilient sides of the holder are forced apart and the base of the blade is introduced at one end or the other between the blade-gripping parts and forced into position. The removal of either the blade 49 or 5l is eli'ected by simply forcing said blade in either direction out from between the clamping members therefor. The clamping members or jaws for the blade 49 are represented at and those for the blade 51 at 53. The jaws are integral with the sides of the holder 48 and the 53 are integral with the sides of the holder 50.

Any one of the three holders herein shown and described may be used with the keeper 38, as already observed, and such holder is introduced into said keeper the end which is adjacent to the space between the uprights 6,01' the lett'hand end. and withdrawn from such end and between such uprightsv When any holder is properly located in the keeper 31 said holder supports the cutting edge or the upper edge of the blade which it carries in the stropping field, which between the rotary and reciprocating stropping devices, and the keeper 38, when rocked on the rod. M5 by means of the cum-actuated rocker and ll 3 spri lid blade to b,

with i other, so that both sides of said cutting edge are acted upon. The cams 31 are so formed that the parts operated thereby are caused to dwell at each end of their travel long enough for the blade to receive approximately the full stroke of the stroppcr with which said blade is in contact, such stroke being both rotary and longitudinal or a combination of the two motions which are imparted to each of the stropping devices; and the operations of the parts are so timed that the blade is brought into contact with one stropper or the other just as soon as said strep-- per enters the stropping field, and remains in such contact until said stropper is about to leave such field, when said blade is carried either forward or backward to meet the other stropper as it enters said field. The spring 35 causes the blade to beheld against the stropper with sufficient force to bring about the desiredeflect and provides the blade with a lceen'edge.

The operation of the machine as a whole will be well unoerstood from whathas gone before, so that little need be said at, this place upon that subject. It is obvious that the blade to be sharpened must first be placed in the holder and the latter connected with the keeper. Then the crank 11. is turned in the proper direction'and the strop ing devices and the keeper set in motion and continued in motion as long as may be thought to be necessary for the complete sharpening of the blade. During the sharpening or shopping process the stropping devices revolve in opposite directions and ciprocate in opposite directions and the blade is carried back and forth into contact with said stro-pping device, all in the manner previously fully explained. Al the end of the stropping operation the holder is withdrawn from the keepeand the blade removed from the holder.

The stropper as a whole and in its parts may be modified more or less without departing from the spirit of my invention.

In order to understand clearly the manner in which the spring 255 supported. and caused to operate, it should be observed that the base of the rocker 252 is bent at 17 toward the end piece 5, and that said spring, after being looped around the pin 34 on the righbhand side of said rocker, extends downwardly in contact with both edges of said base. Consequently, when the rocker 32 .is oscillated, the spring 35 is caused to oscilable member being spring pressed, toward the fixed member, to cause said device to reciprocate on said shift.

2. The combinatiofi, in a stropper, with a suitably supported shaft, and means to revo lve said shaft, of a fixed sleeve outside of said shaft, a second sleeve mounted on said shaft and arranged to revolve therewith and to reciprocate thereon, the ends of said sleeves being abutted and formed to produce a longitudinal movement on the part of said second sleeve as it revolves with said shaft, a stropping member, supporting means for said stropping member, such supporting means being rigidly attached at one end to said second sleeve and being loosely mounted at the other end on said first-mentioned sleeve, and a spring arranged to maintain the adjacent ends of the two sleeves in engagement.

3. The combination, in a stropper, with a pair of suitably journaled non-reciprocating shafts, a train of gears arranged to drive said shafts in opposite directions, and revoluble and reciprocating stropping devices mounted on said shafts, of cams secured to said shafts, a suitably mounted rocker in the paths of said earns, a resilient member car ried by such rocker and having parts which extend beyond or below the rocker, a suit-' ably mounted oscillatory keeper, said keeper being engaged by said extending parts of said resilient member and operated thereby, and a blade holder adapted to be connected with said keeper.

4. The combination, in a stropper, of a pair of approximately semi-cylindrical stropping members, means to revolve such Copies of this patentmay' be obtained for five cents each, by addressing the The combination, in a stropper, with a pair of approximately semi-cylindrical stropping members, means to revolve such members in opposite directions and to cause the stropping surface of one member to leave the stropping field at about the time the stropping surface of the other member enters such field, and reciprocating means for such stropping devices, such reciprocating means being arranged to actuate said devices in opposite directions at the same time, of means to support a razor blade in the stropping field and to actuazl said blade from one stropping device to' the other as their stropping surfaces leave and enter' Such field.

6. The combination, in a stropper, with a pair of suitably mounted stropping devices, and means to simultaneously revolve such devices in opposite directions and reciprocate them in opposite directions,- of'oscillatory supporting means for ablade, whereby such blade has its cutting ed the stropping field brought alternately into contact with said stropping devices.

CLARENCE M. MOORE.

\Vitnesses:

G. A.. ANGIER, F. A. CUTTER.

Commissioner of Iatcnts,

Washington, -D. C.

ge'which is in-

Images