US1937307A - Safety razor blade sharpener - Google Patents

Description

Nov. 28, 1933. w. D. BISHOP SAFETY RAZOR BLADE SHARPENER Filed Aug. 3. 1931 INVENTOR ATTORNEY,

of Fig. 2.

Patented Nov. 28, 1933 PATENT orrlce v SAFETY RAZOR fiL nE SHARPENER Walter D. Bishop, Kansas City, Kans.-, assignor 5 of one-third to :Harold Brown, Kansas City,

Kans.

Application August 3, 1931. Serial No. 554,784 I .10 Claims. (01. 51161) best shown by Fig. 2, sothat theblade-holder may My invention relates to a device forsharpening raa'orblades in a quick and effective manner, and more particularly the double-edged razor blades for safety razors. During thev sharpening operation theblade is carriedaround with one side of. each edge in contact with the inner surface of atubular or cylindrical sharpening element. At a certain point in each circuit the bladeis carried across the interior of the sharpening element until the opposite side ofeach edgecontacts withf-the inner surface of said sharpening element, whenthe rotary movement is resumed In otherwords, during one circuit of the blade one .side of each edge is subjected tothe sharpening action and during each alternatejrevolution the other side of eachedge is subjected to the sharpening action. The bringing of first one side and then the other of .the edges into contact with the sharpening element is automatic and requires no attention on thepart of the operator.

In order that the invention may be fullyunderstood, reference will now be ,had to the accornpanying drawin'g,]in which;

Fig. 1 is a front elevation, of the sharpeningdevice. Fig. 2 is a vertical cross section on line 2-2 of Fig.1. r a

Fig.3 is a horizontalcross section on line 33 Fig. 4 is broken vertical section of the de vice on line 4 -4 of Fig. 2. l

Fig.5 isa broken sidel elevation of theldevice.

Fig. 6 is an exploded perspective View of the blade holder.

fReferring in detail to the different parts, 2 designates a tubular or cylindrical sharpening element which consistsof glass or other suitable element 2 maybe left smooth forusein stropping the razorblade A, or it may be'roughened in any suitable manner to act as a hone. I

The ends of the sharpening. element 2 are closed by heads 4 provided withperipheral flanges .6 and consisting preferably of resilient .sheet metalso that saidflangesfi will frictionally enoperation. I i

gage the ends of the sharpening element 2 and thusprevent it from turningwith'the razor blade during the sharpening operation. The sides of the heads 4havecorrespondng segmentalchanreadily pass from one to the other.

The blade-holder 12 consists of a pair of clamp members 14 each of which is provided at its reduced terminals withfianges 16 adapted to travel in the respective channels 8 and 10. One of the clamp members 14 is provided'with headed studs 1'7 adapted to pass through the medial openings of the razor blade A and a pluraity of key-hole slots 18 in the companion clamp member, which latter is then moved longitudinally to carry the reduced ends of theslots 18 beneath the heads of the studs 17 andthus firmly securethe two clamp members together.

22 designates a rotatable carrier for carrying the blade-holder 12 around in the sharpening element 2. The carrier 22 consists of a shaft 24, a pair of arms26, and a pair of arms 28. The arms 26 and 28.project laterally from the shaft 24 which is provided at its ends with trunnions 30 mounted in bearings 32 at the central portions of the heads 4. Motion isimparted to the shaft 24 by suitable meanslsuch, forginstance, as a manually controlled crank 34' secured upon one of the trunnions 30. V

In order that a the blade-holder 12 .may be readily placed in position inthe carrier 22, I.

provide one of the heads 4 with a door 36 which is preferably connected to said headby hinge means 38. The door 36 may be held in closed position by either'frictionally engaging the outer periphery of the sharpeningvmember 2, or by. springs 40 associated with thehingemeans 38.

In practice the blade A is secured in position, between the clampmembers14 of the bladeholder 12, which latter is then placed between the arms 26 and 28, care being taken to locate the flanges 16 in the channels 8 or 10. The crank 34 is thenrotated and in turnrotates the carrier 22. As the. flanges 16. travel in the channels 8 those flanges which bear against the inner, segmental walls 20 ofsaid channels cause the blade-holder 12 to press the sides B of the blade A against the interior of the sharpening member 2 Fig. 2, to facilitate the sharpening When the flanges 16 reachthe adjacent end of the channels 10 they are caused to enter the latter bjythe outer walls 42 of said channels and the arms 26 of. the carrier 22. Continued pressure of the arms 26 against the blade-holder 12 causes the flanges 16 to travel through the I channels 10 and into the right end (Fig. .2) of the channels 8. As the flanges 16 travel through the channels 10 the blade-holder is held in the 1s. r A az l e p e e eer e? ons stin of 'a curved sharpening elementfa blade holder I witn the eoncave ince-"er s the sides B of the razor blade A will be held in engagement with the interior of the sharpening element 2 during one circuit'of carrier 22 while the opposite sides will be held in engagement with the sharpeningelemnt 2" dur ing each alternate circuit, so that on completion of the sharpening operation both sides I} and C will have received like treatment without requiring the operator to reverse or. otherwise manipulate the blade 1, e ur th eherperir op r t 3,,1. 3 Mia. 5:1. While I have shown one form-of the invention it isto be"ilnderstood *tliat-Ireser v all to such otherforins and inodifieatioris as -pr p any rarwame the snap-' are scope tribe nk Vention as claimed; f

Ewi mi be m inven o Wh I clairn'and desire to secure by Letters Patent,

renam n against the concaye surface o'fsaid' sharpening element, a rotatable carrier for carrying the blade-around in thesh'a p pi iri'g element, supporting means for said carrier,

fiahge on" the blade gamer, {and guide I change-11s i w efii ei i ee e ee ve a whi h 9 erate withthe blade"holder 1npresenting o'p Db'site sides dfthe blade tdthe conca esurface. "'21" A razor blade sharpening devicecons'isting of a cylindrical" sharpening lernentylie ads mounted upon'the ends/*of said sharpeningele nient' I 1 provided with segmental trans verse 'chann'elsfa blade holdeffonholding "a bladeagainst the inner surfacebf "said'sharpen ing element and having itsvends arrangedto travel in said grooves to alternately preserit :the sides" ort 'eqges 'of the ma'qe to said sharpen actuating said" blade hold e 7 fai h razor qesparpe gdevice comprising a curvedfsharpeningelementga lib er' for hol mg" the" razor'blade'infriction ngagernent arpening J ingelem'ent, and suitably ppoi teq in aiis 13 eleiiientjro'tatable means or oarryingsaid blade ening element adapt' ecl to "coact'with the blade 1 holder andfsaidhot'at'able means in holding one surface eaolj c rcuitpf 'the blade holder;

Aha'zor bl'ade sharpening device comprising a curved sharpening element, a blade holder cdihprisingtwoclainp member sfor holding the razor 'e in frictional engagement with the ee eve ee r j ie eeeeie e em n "'tatablenieans' for carryingsai'd blade holder in aicirciiit hivithin the sharpening element; and

e ee me ee Oii l th p n n lemehi adapted to (pact with the blade holder andsaid Wh tl .2 1 i Sl n n le' i'ih fir r,

the sharpening element, and guide means mounted on the sharpening element adapted to eoadt tiith theblade holder and said rotatable means-in holding one" side of the razor blade against"theconc'ave'surface of the sharpening element and in shifting said razor blade to carry its opposite side into frictional engagement with said coiicavesurface during each circuit of the bladehol'dei.

c a ra o bl Sh n n devis eemnrisi a "{SurVed sharpeningeleinent, a"blade"l'iolder for t d r ei qna en a emen to e .e e'e v emr eje m" hc rpen ne e m t l fe ie e' means er i ym'le' e ii b eq o s??? ii aqiib itwi h n t e sha in em t ie m te Ori t e her ie 'in lement Q 'Wiih e blad heleere e a d e n o din L i e 91 he ei v. i he 've u f fqe he har ,.,i1- is em n nd i shitt n a d ra r bla e re airri teqppee te si e i r cti n l & se pent with ea q 'n' eve ur ac u g a a ir u 17 A e er des ar en n ev e com i i a curved-1 h r i are elementheed r th *i i' d hareeein elemen h lder, fer h l fiis hrazpir b ade in ri tion en a me t'wi h the concave surface of said sharpeningeleme'nt, a ta le m e fli iirne d fi "the h d an t p pair ei' eneee r ns a ed the blade der c rfquii 'Wi h "th r en n lement means f r" j e' a in i rotatable member; andg'uide means carried by the heads and adapted to coact with said 'r'o tatabl member and the blade'holder "in holding one side or th b ade a ainstth con a e surfac of" the "sh arpening"'element and in shifting the blade t br g ts. np s te id n o c qn contact withsaid"conca've surface during each circuit of the blade holderi '8 Al ez r b e sh nin der e gm sin a cylindrical sharpening'element;heads mounted upon the ends of said sharpening element and providedvqith communicating'curved and transere u ee eian a holde for he qm h razor blade in frictional engagement with the concave surface of the sharpening 'element and having'its' ends projecting into said guide chann ls, n tatab e m n fiio i c rryin h blad holder in acircuit within'thasharpening ele-' ment and coacting-withsaid holderand the guide channelsin holding oneside of the'razor blade against the concave 'surfaceof the sharpening element and in'shifting said razor blade to'car ry its "opposite side into frictional "engagement with said" concave surface during each"circuit of theblade holder."

9. A razor blade sharpening device comprising a cylindrical sharpening element, heads mo ted upon t -ew 9 aid Sharp n ele ent d:

provided with communicating "curved 'and transj .ve'r'se guide channels, a holder for holdingt'he razor blade in'frict'ionalengagement "with the 'concave surface of the sharpening element,

flanges on the ends of said blade holder and projecting into the guide channels, and rotatable means for carrying the blade holder in a circuit within the sharpening element and coacting with said holder and the guide channels in holding one side of the razor blade against the concave surface of the sharpening element and in shifting said razor blade to carry its, opposite side into frictional engagement with said concave surface during each circuit of the blade holder.

10. A razor blade sharpening device comprising a cylindrical sharpening element, heads mounted upon the ends of said sharpening element and provided with communicating curved and transverse guide channels, a holder for holding the razor blade in frictional engagement with the concave surface of the sharpening element and having its ends projectinginto said guide channels, said blade holder being removable through an opening in one of the heads, a door for closing said opening,-

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