US1131450A - Blade-sharpener. - Google Patents

Description

B. L. WILLIAMS.

BLADE SBA APPLICATlOH 11120 111111.31, 1914.

RPENER.

Patented Mar. 9, 1915 UNITED PATEN T OFFICE.

EDWARD L WILLIAMS, OF SANTA $13 3 CALIFORNIA, ASSIGNOR TO EGI'IE MANUFAC- TURING COMPAN Y, OF SAN Tfil Slit-Z, L'AE-IFGBNIA, A CORPORATION OE GALIFQRNIA.

BLADE-SHARPENER.

Specification of Letters Patent.

Patented Mar. 9, 1915.

Application filed August 31, 1914. Serial No. 859,583.

' State of California, have invented certain new and useful Improvements in Blade- -Sharpeners, of which the following is a specification.

This invention relates to devices for sharpening blades, and has reference more particularly to a new and improved device for effecting the sharpening of the blades of safety razors and similar edged tools.

The main object of the invention is to provide an improved and simplified device for sharpening safety razor blades and like tools in an easy and expeditious manner and without requiring any special skill on the part of the user.

Another object of the invention is to provide a device wherein the sharpening effect will be even and uniform throughout the cutting edge, independently of any skill and care in the manipulation of the device on the part of the user.

These and other objects and advantages are attained by the invention, an approved mechanical embodiment of which is illustrated in the accompanying drawing, wherem Figure 1 is a perspective elevation of the complete device; Fig. 2 is a vertical cross section, partly in elevation. through the hone block and its supporting frame and the blade holder; Fig. 3 is a fragmentary top plan View, partly in horizontal section. of the hone block, frame and blade holder: Fig. his a fragmentary top plan view of one end portion of the hone block and its supporting frame. and Fig. 5 is an edge elevation of the hone block and its supporting frame.

Referring to the drawing, designates as an entirety a hollow rectangular supporting frame that is provided at its four corners and on both sides with supporting legs 11. the ends of which latter are preferably tipped with rubber pads 12 or similar material to avoid scratching and marring of the supporting surface of the frame.

Itigidly supported within the rectangular frame 10 is a hone block 13 of suitable abrasive material, to one side of which is preferably secured a strapping pad 14 of leather. To rigidly support the hone block, the margins of the longitudinal side bars of the frame are bent or crimped in wardly over the longitudinal edges of the hone block 13, as clearly shown at 10' in Fig. 2; the working surfaces of the block 13 and stropping pad 14 (where the latter is employed) projecting safely above or beyond the inturned margins 10 of the supporting frame. Secured to or formed integral with the longitudinal side bars of the frame are a pair of trackways 15 that are depressed below the plane of the working surface of the sharpening element. cooperating with the structure thus far described isa blade holder. This latter, in the broad aspect of the invention, comprises a rod or spindle having means for clamping a razor blade, anti friction rollers freely rotatable on the spindle adapted to engage the trackways of the supporting frame of the sharpening element, and hand-grip extensions adapted to be grasped, one by each hand of the operator, whereby the blade may be traversed back and forth over the sharpening element with varying pressure thereon. The blade holder, in the construction herein illustrated, comprises the following parts. I

16 designates a flat intermediate blade supporting member on which may be formed ceptering studs 17 adapted to cooperate with the holes usually formed in safety razor blades, one of which, of the double edge variety, is shown at 18. At one end the blade supporting plate 16' is rigidly secured by a threaded end portion 19 to a handlemember 20. The opposite end of the blade supporting plate 16 also has a threaded connection with the reduced inner portion 21 of an arbor 22. on which latter is slidably mounted a tubular handle member 23. The arbor 22 terminates at its outer end in a head 24, and the arbor 22 is normally forced outwardly of the tubular handle member 23 by a coiled spring 25 confined between annular shoulders 26 and 27 on the arbor 22 and tubular handle member 23, respectively.

The inner ends of the handle members 20 and 23 are turned down to form journal bearings 28 and 29 for a pair of wheels 30 that are adapted to travel over the trackways 15 of the hone supporting frame, said maintained bf. the spring.

wheels being guided laterally by the vertical portions of the longitudinal side frame members on which the trackways are formed. so as to prevent any substantial canting or skewing of the blade holder during its reciprocating movements. The wheels 30 may be confined on their bearings by slightly upsetting the outer ends of the latter, or in any other Suitable manner.

The blade 18, when mountedon the sup port 16, is securely gripped thereon by a spring clamp 31. which latter is preferably hinged at 32 to one end of the blade em ports 16, just. inwardly of the Wheel 30. while its opposite end is formed with a pr0- jecting tongue 33 that. when the spring clamp is pressed down flat upon the blade 18. lies within a shallow groove or reeess 34; formed in throppoeite tlir izzitlerl ijl or shank of the blade sunportlfi; this tongue I?- being norr. n lv (unlined in swirl groove by the inner reduced curl of the tubular l nlie member 23. such engagement be 25: ll hersithe blade support 15 i provided. with the centering studs 17. the shrine chimp 31 will also. be provided will: registering holes 31' to r: per-ate with Said etude. To prevent. relative turning movement be tween the blade support 1% and the heni'lle member 233. pa ts are formed with :1

it 535 3 l0: Jtnrlinel wletire turning groove and. key rozn'wction intlimte in Fig. 2 that permits relat movement but prevents mevement.

The use of the device will be readily apparent from the foregoing description. The. spring: clamp 31 beii'ig in the relenwil posit on inrlimlerl by (lottml lines in F 2. the blade 18 is: placed on the supporting: plate 16. the tubular handle member retrzrstecl o er the arbor so as to expose the groove 34. into whirh the tongue 33 of the spring: rlnnm 31 is then pr ssed and handle meml'irr ifl then allowed to inwnrtllr ever same. emiliniz the place. The l') 1'l(i:.3 lmlm hzivme tionrtl on he hone n th the whe ls mg m nt the tr 220 time oi the home. living osteille of each stroke to brin ytheferh into eneezenient with ere srrfnre of the hone. Whe e the blade requires boll: llflningf and stronning it is. of Course. first rounhlv shmnened on the hon ng Fur-tare the block l3. after which. lW eimuly invert ng the frame and block. the blade can be (in ished bv a similar operation on the etrofon ne surface 14;. To remove the. ehnrnenerl blnrle. it is neressarv only with the thumb :uubfim-r m to nrodure a. relat e inwnrd mowinent between the bend 2-1 of the :irlmr 22 and the enter end of the tubular handle member 23, whereupon the spring clam 33., being released. springs upwardly out 0 engagement with the razor blade, and the latter may then be removed.

It will he manifest to those skilled. in the art that the device shown mrl described may be modified in minor particulars Without departing from the eeecntial principles of eenstrrurtion involved and without sacrificing any of the advantages inherinp; in the invention. .llenre. the latter is not to be understood an limited to the eXurt and speeific structural tletails shown and described.

I claim:

1. A strapping or honing device for eafetv razor blades. consisting of a rod or sninrlle having? means for clamping a razor blade. untitrietion rollers freely rotatable on the spindle adapted to engage a suitable treclvfrmne for a sluiroenine; element. and lmnrl-mfip extenfs one adapted to be {Iiz'lSPtLl one bv each hand of theonerntor. whereliv the blecls: mnv be tran'erserl back and forth over the shernening; elementwith. variable e thereon.

slimm ng or honing device for saw-t reyor blades. rone eting of a rod or spind e having it movable clnmningz jaw. en i vir-l ori rollers free-iv rotatab e on the :xrlzipterl to engage a suitable truck m For n ehernening element. filxtl heml- :ZSlgr e' it nsimis: :n'lmitecl to be ,q ns 'iecl one L each llfilitl of the m eretnr. nlwrelw the l lmle nmv l'w traversed borlt and forth titer the elisirnening PlOll'V-lli. with variable }")T?S- sure thereon. one ht emit] l'mnil-grin etensione being mountetl For enrlwiee movement to erw'zlgfe eml release Sfltl elnrnpioe law;

3. ln e blriilwshrirnener. the coml'iimtion ol .1 block of ribmeire m terizil. frame in which snirl block r gitll mminletl. said frame living nrnvirlerl w th lnt ruilv proi rtinsz trerlrwm's extend ng lengthwise of Him :mnosite esiilee' thereof. and mid imekwzi lit-ins? (lemeeserl below th ply ng f H ripper Flffftlti of Fflll'l blorlr. a blnzlecs:rrier. r. r oi rollera ioui-mlt-wl on snirl blurlw r v -l rrnim'elilr lemm ng: Sfllt'l liriirlv ww enrl evving to both gi irle erul sn'mw-ri I l l 'i f l 'llil l l: t ill! ll surle e of ti blorlz. m l 5t he r o? hr. j w" rmi' -l lulw rwiauvrterl to the $il-il?-l 1., m d lfslml -lNi r :1 Fill moiertins leterzill'r berontl -whl trnrlrwnw in position to be 9'fi= (l he the n wlierrbv the blmle rnrri r mm lie moved bu l: :n'wl forth uhon. 1nd t lhrl and rewrsvrl relatively to, Said track- \WVS.

l. in a blade sharpener. the romb nation of :1 rectangular f ame nroviderl withtrnrkwars on two of its: onno ite sirlee. n bloolr of abrasive mr terial r g dlv mounted within and carried busnid frame. a bl.itlerarrie n hair of rollers rotntn'blv mounted on said blade-carrier, said rollers being adapted to removablj enggg and travel along lengthwise with respect to the blade-carrier said tracks and support and guide said to lock a blade in position in said bladebla'de-carrier above said block, and a pair carrier.

off'handle members non-'rotatably attached EDWARD L. WILLIAMS. 5 to fsaid blade-carrier so asto project length- Witnesses:

wise f the latter beyond said trackyvuys, SAM \VALKER,

one of said handlemembers being movable C. G. DAKE.

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