US2000941A - Razor blade sharpening device - Google Patents

Description

- y 1935- R. GARDNER ET AL 2,000,941

RAZOR BLADE SHARPENING DEVICE Filed Dec. 27, 1935 2 Shets-Sheet 1 l a 1 6 I9 2/ 15 fiobert 11. Gardner lf yl y ATTORNEY y 1935. R. L. GARDNER El AL I RAZOR BLADE SHARPENING DEVICE Filed Dec. 27, 1933 2 Sheets-Sheet 2 3 m m 2 H 5 8 .1 n I H I\ o I I 6 "0 w 9 H \n bh H 7 H m 7 U m 1m i9 I 9 m 5 F n! 2 W w H 11 0 L e 7 U 2 M w w n 2 d m m m l 1 5 m 6 IQ a 5 U F n .3. -M 7 .1 v m 6 7 l m 9. n

jgobert I. G'ardner 9 D. Lloyd ATTORNEY blade holder. 1

Patented May 14, 1935 1 f h I e 4L .e RAZOR BLADE isms-Resume; "DEVICE L I Renee LL Gardner and Roy D. Hofd, l I 'f u shlrdg I lAphlication beeeintee27,--1933;se isi Ne; "5641 8 t e 8 claims; (Cl. 51 -86) .LThis invention relatestoautomatio razor blade holder shifted by the-cams to 'engage-the-othen sharpening-devices,stands-has Iorthe primary-obsharpening'roller. 7 i I f I jectthe provision of awdevice of the above stated Referring indetail to the drawings; the numeral icharacter-lwherebyla razor blade may beme- I indicates aljc asing open atone 'end' to recelve chanically honed and stropped inlonel'operation aslide 2 preferably in the formation of e'drawer *5 toe-maintain :thecutting edge of the'bladein .effiso that the; casingwill 'be closed at its open end cient condition forshaying. when the slide is"positioned'entirely within the Withthese @and'eother objects .in .view this in- Ca ing. The Il 'W jn'O d f as'fj md ieonsistsein certain novel featuresoflcom thereto a finger piece; so that's. person may reedv '50 struetion,combinationand arrangementlof parts "ilyfimpart tothe slide-an 'inwardoumrd l0 3 she hereinafter more. -fully" described and movement with respect "to the casing. Mounted claimede l I e to-the slide is 'a-suitablerack 4 adapted'forsups complete understanding of our invenporting a safety razor'blede holder 5 wherein the tion, reierenceis !to .be hadjto thejollowingdeblade '6 is capable of'ha'ving pivotal ri1 6venient i5 .scription anda ccom pemying .dIawings-tin which [with respect to the holder. Itjis to be understood-l5 J i l jg pre 1 is, a, horizontal.3ectiqna1 viewj11usthat the type or holder 5,=sho'wn inthedrawings," e trating automatic razor blade sharpening'deforms the subject matter"of-e copending -appl1-' .vioe-constructedin accordancewithour invention. cation -'filed*Septembe'r 20, 1933, end-Seridl' No. .:F lgure2 isja sectional view' taken onlthe line 690,271. However, this present invention is; so

- constructed that it will successfully sharpen razor' 20 2 1 F u e we V e Eigur-e 3 is a, transverse sectional view taken blades other than thetype shown oiitisinot nec bnltheline 3-;3 of Eigure' l. i essary-that the blade be pivoted tow-holder of the I 'vided in the present invention which is -capable e, 4 is a seci fonal View. taken on lthe line charaictershownet 5' as e'spec'ialiniee-ns is pro-' 5 Figure 5 a. fragmentary Vertieal sectional of*accommodatingbla des employed with other 2:5

.v w he n the b ed e s qnbyi e hon typ f'h l I e is surf aces oi thesharpening rollers; I A blade holder-"I is bivdtfilly mounted Figure a similar viewshwing the blade posite side Walls ofthe slid'l-htidbonsis'ts' of actedonfby thestroppingsurfaces of the sharpcurved-resilient-gripping'-;portions l eneegeeme 39v ening rollers. I I 1 1 I Q l'jFigure f7 isf'vafragmentary seetionalview taken 'ure'2; Integralwith' one end of thefbled holder on theline 'l -'-.l .of.F.igur-e 3lshowing the earns actare arcuetelycurved resilient fingers; to age mg Ionlthebladelholdervto plaee the blade in a; a "fian'ged-'ektension ll] of 'a shifting'felenieflt l neutralpositio n between the sharpening, rollers. whichwill 'be hereinafter morefully desoribed.

with opposite faces 'of theblade as'shown in so;

3,5 Figlure 8flis a. similar yiew showing the "blade A pair-oi roller shaft s 'li'are journeled in op-1 5- holdernpositioned by theeamsto bring the blade posite wallsoi the slide} a nd' rotat'ably and 's1id-.

g in o'ntect'jwith one of the sharpening rollers. ably support sharpening rollers spliced slightly 99 15' fl i ilaryiewshowing the position from eaeh other to permit the cutting edge "otjthe v 6: the lilbdeholder by the em o bring the blade bladegt'o extend betweenthe rollersfies shown m n g m t m l t harpening 10116.2 'Figure'Z. The shafts are connected by *niesihiiig 1 llm ejio is a. detail sectional ,view illustrating gears e n rdtflfiioriibf 5 1 sham I n6 @ithesharp ningro11ersand the .drive bethey will be'clompelleditordmwm bpwsite e .tweendtselizaemlgthesupportingshaft.i s v -.Fi h e;-11 'lSfi perspeotiveview illustr ting the Bald shafts" The rollers ham.

Figure l2.-i.s/adiagrammatica.lview showing the lost motion between the sharpening .rollers and theirrespectiweishafts. 1

The rollers also have formed therein elongated recesses ll -communicative withthe oems-end;-

the :shafts so that the pins :13 secured to "said e fi u wdimmmtmmew slmwmg the the'pockets at opposite'sidesiof the shn fitsg ime 5 3 1 ve j vpocketsyrecesses'andr -pihs establisli e dri-vebe i "1 h dmsm m w fihvwmgithe tweenthezshatts'tand thexoners-whemmmesnerte shlttms o t eb d ho by th ams-t aensa are capable 10f rotating approximately h DIE-1 mm 1011615- V avrevolutionbeforeturningthe rollers 1 5 is e .similor view showinge the blade Each roller is Fof.sectional-construction wheraifl 55:"?

tions and also will synchr-onize "the rotstion of i 1 1 one section, indicated by the character i9, is of a honing material while the other section is of a stropping material and indicated by the character 26. Secured to the gears M are cams 2| on which rides a roller 22 and the latter is journaled to the shifting element l l and said shifting element is pivotally supported to the slide 2, as shown at 23. A pinion 24 is secured to one of the shafts l2 and meshes with a rack bar 25 secured to the casing l and extending substantially the full length of the latter. The rack bar has integral therewith a fiange 26 provided with a serpentine face 21 on which rides a pin 28' forming part of a shifting frame 29. -.The shifting frame extends about the rollers, as shown in Figure 1, and has connected thereto a spring 30 which is in turn secured to the slide 2 for the purpose of urging the shifting frame in a position that the pin 28 thereof will always ride or contact. with.

the serpentine face 21 of the flange 26. The sharpening rollers are caused to move endwise of their respective shafts and also endwise with re- "spect to the blade 6 as well as rotate during the sliding movement of the slide 2 with respect to the casing I. The rotation ofthe rollers is through the pinion 24 meshing with the rack bar 25 and the sliding movement of the rollers is by the pin .28 operating against the serpentine face 21 of the flange 26 carried by the rack bar.

Each sharpening roller at its ends is provided with wear plates 31 to be engaged bythe shifting frame and sufiicient friction is had between the shifting frame and the rollers to prevent the latter from accidentally rotating so that said rollers will not rotate until positively driven by their respective shafts. g The cams 2| engaged by the roller -22 of the shifting element ll act to move the blade into the neutral position and the two operative positions above mentioned.

The cams are so shaped and cooperate with each other and the shifting mechanism of the blade that said blade will have three positions with respect to the sharpening rollers, namely,

,- neutral position and two operativepositions, one

in engagement with one roller and the other in engagement with the other roller. v The blade assumesthe, stated positions during the inward and outward movement of the slide with respect to the casing and the described driving connection between the shafts and the rollers permits the camsto reverse their positions with respect to the rollers so that on the slide moving into the casing'the blade will first be brought into contact with-the honing surface of one roller and then in contact with the honing surface of the other roller and during the movement of the slide outwardly with respect to the casing the blade first comes in contact with the stropping surface of one of the rollers and thenin engage: ment with the stropping surface of the other roller, so that during the inward and outward movement of the slide with respect to the casing the blade will havereceived honing and then stropping so that the cutting edge thereof will be maintained in the most efficient condition forshaving. During the. rotatable action of the rollers upon the blade said rollers also move endwise with respect to the blade to prevent the sharpening rollersfrom forming in the cutting edgeof the blade minute grooves or saw teeth.

In operation, the slide is moved manually in opposite directions relative to the casing. The sliding movement of the slide rotates the sharpening rollers and also thebla'deholder is oscillated by the rotation of said rollers. The oscillation of the blade intermittently engages the latter with said sharpening rollers, first contacting with the honing surfaces and then with the stropping surfaces. During the rotation of the rollers they are also moved endwise in opposite directions by the pin 28 on the shifting frame 29 riding upon the serpentine face 21.

Having described the invention, we claim:

1. A sharpening device comprising a support, a slidemounted to said support for movement in opposite directions, a holder pivoted to the support and receiving and frictionally gripping a blade and adapted for oscillatory movement, sharpening rollers mounted to the support for rotation and sliding movements endwise relative to the blade and each having honing and strop- 1 ping surfaces, means between said sharpening rollers and said holder whereby movement of the slide in opposite directions imparts rotation to the rollers, means for sliding the rollers endwise in opposite directionsduring the rotation of the latter, and means for intermittently engaging the blade firstiwith the honing surfaces and then with the stropping surfaces of said rollers.

2. A sharpening device comprising a support, a slide carried by said support and having movements in opposite directions, a'holder pivoted to the support and including resilient gripping portions to receive and'frictionally'engage a blade, said holder adapted for oscillatory movement, sharpening rollers arranged at opposite sides of the holder with the blade extending therebetween and including honing and stropping surfaces, means for rotatably and slidably mounting the rollers to the-support, means between said last means and said holder whereby movements of the'slide in opposite directions imparts rotation to the rollers, means for sliding the rollers endwise in opposite directions during the rotation of the latter and means for intermittently oscillating the holder to bring the blade first into'engage ment with the honingv surfaces and then into engagement with the stropping surfaces of said rollers. i

3. A sharpening device comprising a support, a slide carried by said support and having movements in opposite directions, a holder pivoted to the support and including resilient gripping portions to receive and frictionally engage a blade, said holder adapted for oscillatory movement, sharpening rollers arranged at opposite sides of the holder with the bladeextending therebetween and including honing and stropping surfaces, shafts journaled to the support and extending through the rollers for rotatablyand slidably supporting the latter, driving means between the shafts and the rollers, and means between said shafts and said holder whereby movement of the slide in opposite directions imparts rotation to the rollers, means for sliding the rollers endwise in opposite directions during rotation of the latter and means for intermittently engaging the blade first with the honing surfaces and then with the stropping surfaces of said rollers.

, 4. A sharpening device comprising a support, a slide carried by saidsupport and having move-' ments in opposite directions, a holder pivoted to the support and including resilient gripping portions to receive and frictionally engage a blade, said holder adapted for oscillatory movement, sharpening rollers arranged at opposite sides of the holder with the-blade extending therebetween and including honing and stropping surfaces,

directions, a rack, bar secured to the support,

shafts 'journaled to the support and extending through the rollers for rotatably andslidably supporting the latter, driving means between the shafts and the rollers, gears connecting the shafts whereby said shafts will be synchronized and caused to rotate in opposite directions, and

means between one of the shafts andthe slide to cause rotation and sliding movement of said rollers by the movements of the slide in opposite directions, and means between the slide and the holder to cause oscillatory movement of the holder during thesliding movements of the slide to intermittently engage the blade first with the honing surfaces and then with the stropping surfaces of said rollersduring sliding movement of the slide. i i

i 5. A sharpening device comprising a support, a. slide carried bysaid support and having movements in opposite, directions, a holder pivoted,

a pinion betweenone of the shafts and the rack bar to cause rotation of the rollers by the sliding movement of the slide in opposite directions, means between the rack bar and, therollers to impartendwise movement to said rollers during the sliding movement of the slide, and means between the slide and the holder to oscillate the latter during the sliding movement of the slide to first engage the blade. with the honing surfaces and then with the stropping surfaces of the rollers.

6. A sharpening device comprising 'a support, a slide carried by said support and having movements in opposite directions, a'holder pivoted to the support and including resilient gripping portions to receive and frictionally engage a blade, said holder adapted for oscillatory movement, sharpening rollers arranged at opposite sides of the holder with the blade extending therebetween and including honing and stropping surfaces, shafts journaled to the support. 7 and extending through the rollers forrotatably and slidably supporting the latter, driving means between the shafts and the rollers, gears connecting the shafts whereby said shafts will be synchronized and caused to rotate in opposite directions, a rack bar secured to the support, a

pinion between one of the shafts and the rack bar to cause rotationgof the rollers by the sliding movement of the slide in opposite directions, a

shifting frame carried. by 'thepshafts and frictionally engaging the ends of the, rollers, a flange on the rack bar and having a serpentine face, a

pin on the frame and riding against the serpenholder and the shafts to impart oscillatory move'-.

vme'nt to the holder during the rotation of said shaft. I r

7 A sharpening device comprising a support, a slide carried by said support and having movetine face, p ing, means urging the pinlto en gage the serpentine face, and means between the ments in opposite-directions, a holderpiv'oted to the support and including resilient gripping portionsto receive and frictionally engage a blade, said holder adapted for oscillatory movement, sharpening rollers arranged at opposite sides of the holder with the blade extending-therebe tween and including honing and stropping surfaces, shafts journaled t0 thefsupport and extending through'the rollers for rotatably and slidably. supporting the latter, driving 'means between the shafts and the, rollers, gears connecting the shafts whereby said shafts will be synchronized and caused to rotate in opposite directions, a rack bar secured to the support, a pinion between one- 0f the shafts and the rack bar to cause rotation of the rollers by the sliding movement of the slide in opposite directions,

a shifting frame carriedby the shafts and frictionally engaging the ends of the rollers, a flange on the rack bar and having a serpentine face, a

pinon the frame and riding against the ser pentine face, spring means urging the pinbtoi engage the serpentine face, cams carried by the" shafts, a cam roller engaging said cams, pivotal means onthe support and carrying the cam roller, and means for connecting the pivotalh means to said holder..

8. A sharpening device comprising a support, a slide carried by said support and having movements in opposite directions, a holder' pivoted to the support and including resilient gripping,

portions to receive and frictionally engage a blade,'said holder adapted for oscillatory move-' ment, sharpening rollersv arranged at opposite sidesof the holder with the blade extending therebetween and including honing and stropping surfaces, shafts journaled to the support and extending through the rollers for'rotata'bly and slidably supporting the latter, driving means I, between the shafts and the rollers, gears connecting the shafts whereby said shafts willbe synchronized and caused to rotate in opposite di-' v rections, a rack bar secured to the support; a

pinion between one: of the shafts and the rack bar to cause rotation of the rollers by the slid-- ingmovement of the slide in opposite directions,

a shifting frame carried'by the shafts andfrictionally engaging the ends of the rollers, a flange on the rack bar; and having'a serpentine face, a

pin onthe frame and riding against'the'serpentine face, spring means urging the pin-to eng gage the serpentine face, cams carried by the shafts, a cam roller engaging said cam, pivotal means on the support and carrying the cam' roller, and resilient fingers on the, holder and engageable with opposite sides of said pivota ,ROBERT L. GARDNER ROY D. LLOYD.

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