US1836064A

US1836064A - Safety razor sharpener

Info

Publication number: US1836064A
Application number: US300328A
Authority: US
Inventors: Otto W Boche
Original assignee: Individual
Current assignee: Individual
Priority date: 1928-08-17
Filing date: 1928-08-17
Publication date: 1931-12-15
Anticipated expiration: 1948-12-15

Description

Dec. 15, 1931. o. w. BOCHE SAFETY RAZOR SHARPENER,

Filed Aug. 17, 1928 IIIIIIIIIIII Patented Dec. 15, 1931 isaaeea a. 1? i s.

o'r'ro ,w. BOCHE, or rnanenroar', ooivn orIoU'r,

SAFETY RAZOR siannrnnnia} Application filed An rams. SeriaI no. ,sc'o,sea.

This invention relates to a sharpener for safetyv razor blades, and has for an object to provide a simple and improved device which may be operated'by any one unskilled in the sharpening of razors to properly sharpen the blades evenly on both sides by the simple operation of manipulating a hand crank.

. It is also an object to provide a device of this character of a structure which will re quire'only a small space and may be easily carried, and which may be manufactured and assembled at low cost.

It is a further object of the invention to provide a device of this character in which the sharpeningelements may be easily and quick 1y renewed without the use of special tools.

With the foregoing and other objects in view, the invention consists in certainnovel features of construction, combinations and 29 arrangements of parts as will be more fully described in connection with the accompanying drawings. In these drawings,

Fig. 1 is a. longitudinal vertical section through the device substantially on line 1-1 of Fig. 2.

Fig; 2 .is a vertical transverse section through the forward end of the casing showing the interior mechanism in elevation.

Fig. 3 is a top plan view with the casing re- I 39 moved. I

Fig. 4 is an end elevation thereof looking from the left of Fig. 3 but showingthe base; in section. r

Fig. 5 is a bottom plan view of the top of the casing showing the means for holding the blade. v Fig. 6 is a detail partial section and partial elevation showing the mounting and construction of the sharpening'rollers.

Fig. 7 is a transverse section substantially on line 7 of Fig. 6. I Fig.8 is a detailed section substantially on line 88 of Fig. 5. I Fig; 9 is a longitudinal section through the blade holder showing how a blade of the Gillettetype is held, and i Fig. 10 is a transverse section onan en la rged scaletaken substantially on line;1010 ofFig.9.

The structure illustrated comprises a sheet are preferably paper tubes onitheoutside of 9 I metal base- 10 on which the mechanism. is mounted. This mechanismincludes a lower frame 11, and an-upper rocking frame 12" whichis pivoted to-the upright side members 13-and'1'4 'of the lower frame, this pivot being the'main' drive shaft 15 which is journalled in the sides 13and '14 offthe lower frame. The lower frame 11 may be made of sheet metal bent to substantially U-shape, and may benotchedat its opposite ends, as'shown at 16; so that its base portion 17 may beslid long1tud1'-- nally under ears or'strips 18fwhicharecut I from the base 10 and forced upwardly." These ears '18 have a certain spring'action" which firmly grips the edges of the base portion 17 ed and holds the frame in position. g' f The upper or rocking frame 12is ofs'ub stantially inverted U-shape so thatits end members arepivoted on the shaft '15. One of its'end members 19 isezitended downward- 1y to a point adjacent'the lower end of the'f' frame 11 where it is pivotallyconnected, as shownat 20,, to 'aflat spring 20 secured tof the 'roclring or canilevrQlQ and the side of the lowerframe' may have an" elongated' curved siot 22 :0 give clearance'to the inner? end of the pinQO. The lever 2i ispmaa; to the frame member iiby'a pivot 23,; maths-1 downwardly extending member 1 9 of the 11pper frame has an" elongatedslot 24tlii'oughf I which this pivotextends so that lthe pivot will not interfere with the rocking move ments ofthis frame 12. l Mountedinthe upper or is a pair of sharpening rollers 25' and 26.13 These rollers are arranged in parallel rela tion and extendthrough an opening 27, in'the' top horizontal memberiof the frame. These' rollers may be of any suitable material but 5 I which thesharpening mixture is applied, or they may bemadeof some other material cov ered with leather, canvas, paper or other 1 suitable material on which this'mat'e'rial is" applied." The tube is mountedonmetal caps '95 2s and 2s"- inserted'in the ends of the'tubes.

andhaving reduced necks29 andB Otoire ceive the shaft 31;. "Securedjjto one'e'nd of this shaft is a gear .32 which operates the shaft The cylinder is secured to the shaft srriac i'j roclringframe 112 3 i the two caps with the lugs 33 seated in the so as to turn therewith by means of lugs 33 struck up from the shaft and adapted to seat in notches or slots in the neck of the cap 28. In assembling, the roller withthe two caps in position is placed between the sides of the frame 12 and the shaft 31 is passed through openings in these sides and through notches in the reduced end 30. A stepped collar 34 is placed on this shaft before it is inserted and forms a bearing for the shaft in the side wallof the frame 12. A washer 35 is placed on the opposite end of the shaft outside the side member of the frame and the whole assembly is securedin position by a cotter pin 36. Itwill be apparent that the user, even though unskilled in mechanics, may

easily remove these rollers should they be come worn or 1n ured and insert a new roller, 7 all that IS necessary being to remove the cot to!" pin and withdraw the shaft which will permit removal of the roller;

The main drive shaft 15 is operated by 'means of a hand crank 37 and carries a gear 38which meshes with one of the gears 32 on v the rollers and drives the other roller through i an idler 39.. The gears are. soarra-nged that the turning of the crank 37 to the right or clockwise, as'viewed in Fig. 2, will rotate the right hand roller '25 to the left or counterclockwise and the left hand roller to the right or clockwise. In other words the upper sides of these two rollers move toward each other. i r This also desirable to give the rollers a longitudinal movement as well as a rotary v movement to more. nearly simulate the action used in hand stropping the old style of razor. For this purpose the collars 28 at one end of the rollers are each provided with' a grooved pulley or wheel 67 set atan angle to theaXisof the roller shafts, as shown in Figs. 3and 6. A stud 68 is mounted on the frame. 19 and carries a cross pin 69 which 4 projects at its opposite ends in the grooves in the pulleys .67", Thus due to the inclined arrangement of these pulleys the pin 69 causes the rollers to slide longitudinally back and forth on the shafts 31-as these rollers 1 rotate. the slots in, the collars 28 for the lugs .33 and these lugs being made long enough to permit this movement.

On its inner end the shaft 15 carries a cam'40 which is engaged on its opposite'sides by the sides of a fork 41 carried onithe rock 'ing lever 21. This cam is preferably provided with a somewhat flattened surface 42 on oneside so that as it rotates it will alternately disengage from thesides of thefork and cause a dwell or rest in the movements of the rockinglever at the two extremes of its rock- 7 ing movement.

Theenti-re mechanism is enclosed within a sheet metalfcasing 43 which is preferably 1 open at the top andbottom. At its lower end it is provided with outwardly extending flanges 44 which may slide under upwardly extending

ears

45 and 46 cut from the base 10. Each of the flanges 44 has a notch 47 suitably spaced from one end so that the cas ing 43 may be placed over the interior mechanism with the ear 46 passing through'the notches 47 in which position the other end of the flange 44 will be to the right of the ears 45, as viewed in Fig. 3, then by sliding the casing to the left the long portions of the flanges 44 pass under the ears 45 and the short portions under the ears 46securing the casing in the proper position on the base. This movement is'limited by a stop lug 48 engaging the flange 49 in the side of the casin and a s rin catch 50 en a 'in the 07 b b b b -The upper end of the casing is elosed by cap or covertlwhichxfits the top of the casing and is held by frictional engagement therewith. This top I may be. formed,'as shown in Flgs. 1 and 2, or as shown in F igs.

5 and 8.; As .shownin Figs. 1 and 2,, the

top has a slot 59 and a slit 6O spaced to one side thereof. A holder 61 of sheet metal is rolled overatits free end to form a circus lar spring clamp 62 open at ts under slde.

A spring clip 63 is foldedupon itself to re-, ceive the blade 57 between its side portions and if thebla de has a guard 58 this. guard is enclosedin the curved or folded portion" of the clip, the blade being slid in from one end. 7 Theclip and blade'is now slid intogthe curved head 62 ofthe holder from one end}. thereof and a tongue 63 on this holder .is"

inserted in the slit 60 and lies against the 1 under side of the cover as'shown in Fig.2. The blade is now held in the upright position between the sharpening

rollers

25 and 26, as

shown inFig. 2. If the Gillette type of blade with a double edge and no guard 58;

is tobe sharpened'it is held, as shown in Figs. 9 and. 10. The sidesof the clip 63 are provided with openings '64 toalign with the openings in the blade 66 and one set ofthese' openings 64 are rolled orforced inwardly,

as shown at 65, to extend into the openings.

in'the blade and cooperate therewith tohold the blade in the clip. The clip and bladeare now inserted in the holder which is mounted in the top of the casing the same as shown inFig.2.

As shown in Figs. 5 and top is'iforined I with a. slot and one side ofthis slot is rolled over to form ahead 52., A similar head :53

formedon a sliding clamp 54 which is,

mounted on the under side of the cover and is adapted to move back and forth toward and from the bead 52, the bead 53 extending outwardly through the slot in the cover;

to be sharpened, the protecting clip 58 acting as a limit stop to prevent insertion of the blade too far into the holder.

The operation is as follows: The handle 37 and the cam 40 are so placed on the shaft that when the handle is down or in its lowest position the upper wall of the frame 12 is substantially horizontal so that the rollers and 26 are on opposite sides of the slot for the razor blade in the cover. The razor blade may now be inserted, as shown in Fig. 2 or as shown in Fig. 8, with its cutting edge downward, and as the rollers are in the neutral position this insertion of the blade in po- SlblOD. will not drive the sharp edge against the rollers to either out the rollers or injure the blade. The spring 56 clamps the blade between the beads 52 and 58 and the tendency is to retain it in the upright or vertical posi tic-n, while the holder 62 also holds in the upright position. The crank 87 is now turned to the right or clockwise which will rotate the

rollers

25 and 26 in opposite directions, and at the same time the pin 69 acting in the gro ed wheels 6'? will slide the roll crs back orth longitudinally of he razor blade, givi a combined rotary and longitudinal movement to the rollers. it the same time the cam acting on the sides of the fork ":1 on the cam lever 21 will rock this lever back and forth and through it and spring 20 will rock the casing 12 about one pivot shaft 15. This moveiincnt will alternately bring and press the

rollers

25 and 26 against the opposite sides of the sharp edge of the blade, the spring 20 yielding suliiciently to hold the rollers with the proper pressure against the blade. At this time a dwell or rest is alternately permitted the frame 12 by the fiat 4-2 on the cam so that each roller will remain for a short time against the edge of the blade as it rotates, and the rollers will alternately, uniformly and equally sharpen the opposite sides of the blade. The pressure of the rollers against the opposite sides of the blade is controlled by the spring 20. his action, therefore, yieldingly presses the rollers against the blade wi the desired pressure for the sh arpo alien and the combined rotary and longitudinal movement of the rollers gives a stropping action closely simulating the hand stropping given to tae old style of razor.

It will be apparent from the foregoing scription th at no skill is required in sharpening the blades,all that is necessary'being to' insert the blade in the clamp and then turn the crank for a few revolutions. This operation will automatically sharpen both sides of the blade, andtheoperation on the two sides will be uniform and equal. The device may be used on a table, or it maybe secured to. a, be held in the hand wall or shelf or it-may desired.

Having thus not invention, what 1 cat claim is 1. In a sharpener for safety razor blades, a

U-shaped support, an. inverted lJ-shaped frame pivotally mounted on said support,

a pair of sharpening rollers mounted on said rame, a lever connected to said frame, a shaft, means for operating the shaft, a connection from the shaft to the lever for rocking the lever, means for supporting a razor blade between the rollers, and driving connections from the shaft to the rollers.

2. In a sharpener ior safety razor blades, a

forth the. nature of I support, frame pivotally mounted on said support. apair of sharpening rollers mounted on said. frame, means for supporting a blade to be sharpened between the rollers, alever connected to said frame havinga fork, a

shaft, cam on the shaft in said fork to rock said lever in opposite directionsto bring the rollers. alternately in engagement with the blade and having a flattened portion on one side to cause a dwell at the extremes of the rocking movements wh en the respective rollers are in contact with the blade, and a-driving connection from the shaft to the rollers.

3. In a sharpener for safety razor blades, a support, a frame pivotally mounted on said support, a pair of sharpening rollers mounted v on said frame, a lever connected to said frame through a spring adapted to yield inopposite directions, said spring forming a yield able driving connection. from thelcver to the frame, shaft, means, for operating the she ft,

a connection from the shaft to the lever for rocking the l8VQ1,.Df1-32L11S for supporting a razor blade between the rollers, and driving connections from the shaft to the rollers.

4. a sharpener for safety razor blades, support,'a frame mounted for rocking move ments on the support, a pair of sharpening rollers, a crank for operating the rollers and rocking the frame, a casing enclosing the rollers and frame having an elongated opening in its top wall. a blade support on the said top wall including a spring clamp to hold the blade upright between the rollers, and a. spring in the frame rock ng means forming yieldable driving means for the frame to yieldingly press the rollers against'a blade between the rollers. 7

5. In a sharpener for safety razorblades;

means for supportingthe blade, a'pair ofsharpening rollers, means for rotating the rollers 1n opposlte directions including 1 a shaft in each roller, a lug projecting from said shaft, a collar about one end of said shaft'supporting said roller, said collar having a slot therein to slidably receive said lug thereby forming a splined connection between said roller and said shaft, means for causing relative lateral movements between the blade and rollers to cause contact of the rollers alternately onv opposite sides of the blade, and means for causing relative longi- V tudinal movement between the rollers and the blade including a collar about the other end of each shaft a grooved Wheel mounted at the other end of each shaft at an oblique angle thereto and a fixed stud projecting into said groove.

In testimony Whereoi I afiix inv slgnature.

orro W. Boone.

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