US2328221A - Specimen blade sharfener - Google Patents

Description

A118- 31, 1943. J. I 'lPsHAw SPECIMEN BLADE SHARPENER 4 sheets-sheet 1 l Filed Jan. 27, 1941 Aug. 31, 1943. J, LlpsHAw 2,328.221

sPEcIMEN BLADE SHARPENER Filed Jan.` 27, 1941 4 sheets-sheet 2 Il l@ a IH l 14 l l' I m a 1r L' Qi HEM II n 'I Il s a 1| x y'. I# i" l *EN u l gg a un n, n ,5% n

` I INVNTOR.

' BKM Aug. 31, 1943. v J. I IPSHAW 2,328,221

SPECIMEN BLADE SHARPENER Filed Jan. 27, 1941 4 Sheets-Sheet 3 10 MMM @fr/Mgg.

Au@ 31, 1943 J. LlPsHAw 2,328,221

SPECIMEN BLADE SHARPENER Filed Jan. 27, 1941 4 Sheets-Sheet 4 |V INVENTOR. i Jul/.a5 .laps/mw `this inventionlis ecincerii'ecl.V

surlacejto insure proper contactaitiaill tzxnesi` 1 Y Flss'and 6Rrest10hf.,Sfteken ori the 1111? and; 6'6 ,respeotiyelm ot Fig.' i; ment illustrating the cemV construction blade during the nemng eperetmm "blade @finge StrOPPiUslgQlz 1,114, t :A .frame 20 Asupports Z'tfon which' is `pmmtedme531; 1943 sud [This invention :relatesto ""asl'ierpefieing Vmaj- `chine `'und f has pertloulsrly to do" t withan `appa.-

ratus'forsharpening blades for h lstolcvgiiL- elspeei-` mens;

Probably the eneepeet ignores usleqerefeundj inhlstology laboratories; 'I'heseknives areused foicutting extremely`V thin-"slices of" animal tisa're placed under au` microscope andf studi'eclrtor object; of `the :invention V"is `to pm vile automatically operatingmahine for. sli'arpeningthese knives lsueh maehirie to be 'operated by.

V.wei-i `enseeees as cancer and ythe like. 41A-*eeriel slderablenumber oftheSe'knivesare usedin such" laboratories "and the problem of keeping them to the properf keenness is fa. problem` with which.

ing sharpened ndlnfwhiehfaleontrol is main;

taineelv between the vblgcle fand the sharpening *Anothen object of' tlieifnvention is 'toiprovide ing meehmete a stropoing ernnisnmgfpleemne withoutfaltering the ad-stments.

1A furtnerebjeetis to previdee neeei'eehtrei edge and the sharpening surface. l

u `Otherobjeots end features oi" thefinvention`, Y

having to do with l details of 'eonstruetionfanu Y l operation,` such as the' speed of-A relativemev'ei' for the pressure `meii'itainedlbetweentlfie'kniei `ehefts extending from eeen end thereerend Y 4 v rotatably mountedin the vertical arms of mein- The `Vertical' arms 0I member 45 arew ment of the bindeA and sharpening"surfceywill.

betbrought out in the following description Inthe'drawingsn t r Fig. lis a, plan View of the machine.` t

Y Fig. 2 is aside elevation. i

Fig. 3 is` apside elevation ofthe portion;

ind

of theinachine showingfthe ontrolbeltstin d if-V ferent relative positionsj;` t U .i Fig; 4 is zin-englyieiisj of the lippe; VWcikirig.,ele-

Figs, 8 `to `12 illustrate moyfelneritlo! kan@ Figs.- A1av `to V17; illustrate movement ef une :nine` t ng" step;

reciprocally onthelt'racks; wrThe reciproction is eflected by `centr fyjmeuenedeirreme nie a -sne'ped v beam @5 liavifngslideslonthe vrtloalforins. A seeond U-shaped-meiber- VI'Fhes its-'vertical Y Iarms*rno'tuited 1in saicislides 46'. Guide bolts Y48 are" mounted ronineiriber41 and project up through-mernber 45r to insure` proper movement L effnhe member ufwhenit is shifted up and down Y b`y`un :adjustment screw '49; Aihexagon'al mem- *herr-5 0 turns with Vthescrew 4l andonefsurfaee fund stonef'lnis `abar.{60. Thi-s bar Yhas elette@ etfs'i teigreeive projections" sa f ef suerte f B''fonwhich are mounted pulleys 6 4) The-bar so may,'ehereiere,jbe reteteduniits peeitienby i C turning the pulleys i 64,` This bar eis 'adaptedn to servey esafblade"lioli'l'ei",v as shown more parf ticularlyinthe sectional View ofFig.`5. Spring plates 65 are bent in v such a manner as to cor respond to the angles ofa; blade' Wil'lnbe seen that `when the `knife edge is restingonffthe stone surface, fasfshownin Eig.. 5; theraisingor lowering@ bar 16,8 byfnieans off adjustment Screw 4%; Awill `eziixse a; changeo'f the angle of contact` i l between `the fenige 'of the blade endV tneistenenf i This `adjustment.can be carefully regulatfegl by regsonofthe hexagonal eontrol r-Ii'erx'ibeifll` and: `also bymeansjof a protraotoijV $8 vI nounted-on :l pbinter .fmounte'dv on br e member 4 1 and,"

"Mepntedatrensversely ef thetabiezz and piefe Vpended pairs of verticallyl spaced belts. .toppair will be referred to as belts 14 and the jay; n r s that they will contact the ends of wingsy 38. At the ends of the respective sides of table 22 are mounted angles 'i2 andv'lS. These angles have vertical portions between which are sus- The lower. pair will be referredA to as belts 15. The

vtensionof each of the belts may be controlledv inserted and fastened by the samebolts 34 andV 35. V'In stropping, the lower belts 'i5 are used and table and the platerare moving in the direction of the arrow, the pulleys lilt'and the rollers?! will be' positioned as shown and the stropping y surface 39 will be moving away from theredge of the stone. At the end of the stroke of the table when reversal takesplacr-z,y the belt 15 will vshift the pulleyand swing the knife around. l On the the blade edge andthe stone is obtained. Belt 'M 'is then passed underneathy the pulleys 543; The' motor Se may now be started and ptable 22 'Y will. startv reciprocating onV theframe 2d. The Y A Y 1 from kits sharpening surface.' When leather limits of travel ofthe table `are Vshown in Fig.; 1

by the dotted lines. Since the Umembers 45 and j Glare mounted onthe frame, they'rwill remain stationary relative'to the table. In usingv rafstonev i for sharpening, thesurfee is to travel toward the; edge ofthe bladel 65, as shown by the arrow,v in'Y Figui.,'.Thereforerwhenbelts14 start shifting 'with the'pabiafthepuiieys etwiiibe rotated' by Y the belts to swing thearrn d tothe position` showriinFigs.` 1v-andf2. rAfter the'blade comes in contact with the stone, as shown inFignl, the Vpulleys` ,Mean no'longer rotate andthe result willvbegtlqiat thebelt 'M will vslide in the pulleys until the table yreaches theend of ,its stroke. The tension olithe beltsfis to beadjusted to the point where ',this .sliding may i exert iust a denite amount of pressure between vthe `blade andstone.

As the table reachestlie end of its'stroke. it will shift its direction ovmovemeintand' this' shifting will` cause @the belts t reverse ktheir Inox/errien't.V

Sincethe blade 66 isifree to `move upwardly, the

pulleys lwill again.,r .rotate to swingf the-blade and bare@ aroundso that`the,bladefwill contact the stone von 'its returnmovement. Thusfat the'end of each stroke thel blade will be shifted sc that it is alwaysin theL proper relation .tothe stone.

` Means are Y(provided. for 'controlling vthe move-V ment of the blade toward the stone; .These arel the wings 38 and thecam portions 39and 'lill .coa

operating with the `rollers 'Hgon arms 1S. The wings Vand rollers are so arranged that asathe blade is shifted v,a1-the end-0f the stroke and it' 'approaches the vstone, the rollers will contact the wings 38 and gradually roll downwardly on, cams 35B' ory lil Vtobring thevedge ofjthe blade gently in contactwith'the stone. This movement is'illusdown onthe surface-teA` and the blade is brought into contact with the surface of the stone representedfby the dot-dash line:

i YIn Fig.- 10, thereversingfmovement of 'the bladeY plate 35a are formed camy surfaces Eil-i and 85.

beforevlpulley 64 will be shifted to raise the blade strops lareused for the inishing surface, it'is essential that the blade be lifted from the plate prior tothe reversal, Votherwise the leather will'be cut. As the table Vis shifting in Fig, l the roller Il`A hasv just Vleftcanfl surfacet-see Figs. y13V and 14, and-'bladef has beenl gentlylowered` to `the Y surfaceof vthe strop. As the ,movementv olthe table continues in the direction ofv the` arrow,

rollers'A 'H ,willbe contacted byfcalnsurface 84 i and lifted, as-shown inFig's. 15 andr 16. Reversal 0I" reciprocation thenjtakes place and blade ilis pinjg; the blade may be'ni'shedf by turning over platev 35a Vand f presenting ja smooth nisliing leather surface. The action of the cams is the Y same in the finishing stepas itjwa'sinfthe-strop-r ping step. 1

., Itwiiibeseen manada/'tette'eedarieuiit, f

iner Aof plates 3'6 Yand 36d; the sharpening sur: face. A31 orll, 8|will be, in eiie'et, floa-tingisu'r! races, 'that ia'they maypivqtabeut'the axis @rfi 1 v theboltsd, 35. This isfhighly desirable-since` f itgpennits the biadeitqestablisn 'its mvnecntaqt with vthe sharpening surface and prevents undue- Y j wearrat any one'V end of the plate.Vr Means must I l beV provided.. however,forpontrolling the floating of vthe'sharpening surface and 'this is accomis shown with -the kwing 38 reversing its movement Y and falling under the roller?! inFig. 11. 'Then as ,theV reversing of the table continues, the roller 'il' moves down thecam vsurface i9 to bring the bladeagain in contact-with the stone.

Vl'n.'s'troppirlg andfinishing the edge of a blade,

a ldifferent movement is used. lThe surfaee.thenV moves away from the Yedge of .a blade. The plate dea, shown in Figs. 3 and 7,.is utilized for stropping and Vnishingm 0n one side a strop surface dil is provided and'on the other side a strop sur# face el 'is provided to' strep a biadeg'frhe piste 36 Vis removed'from vthe machine by loosening kthe plishedl in the present case lby cooperation Vbe-V tween the rollers 'il and the wings 3,3 `or cams 84, |85, ras vthe ,case maybew'he rollersv always contact the wings or` cams priorto the time the, blade contacts theY ,surface andsince these rollf ersare mounted atA each side of the'apparatus, the sharpening surface will receivea pre-determined,balancing -eiect each'timej the blade vap-V proachesy the surfaeeAfter Contact hasv been made between the'blade and vthe surface,-,the" rollers leave the wingsfor cams and the blademay find its own balance with' the sharpening` surface. There is, therefore, a controlled float` Aing Contact betweenfthe blade edge `and the.Y Y

sharpening surface.V

It will be seen that with theajbeve device there is such control maintained that breakage of blade ceed in its sharpening automatically'and be left to vvrun for any length of timeA desired without the attention of an operator. 5

lt is understood, of course,A Y tlfat theiinprovements shown vareintended Ato-b'e illustrative only,

bolts@ and 35 and lifting the vplatef O ut'o'f its position.- 1 The stroppingplate 5ta may then'beY andthatthe breadth of thefinventionfis evidenced It .will be understood, of course, thatV with the use ofthe vbelt reversing system, it is necessary that the 4tableactually start on its reverse movement strokes, ai siiarpeningV el tablelhaving a sha t er4 Ineens suggrent Q versely of saidtable andV for pivotallymounting `said holder-,whereby it mayfbefshiftedfrelative (to said :tabl`e,cmeans foradjusting the "level of lsaid blade"` holder whereby the angle` contactofY a blade held therein fwith a sharpeningsurface fmay be regulated; pulley means on said blade `holder and belt `means on' said table cooperating to' effect `a shifting ojfsaid blade holder at the end of each stroke of saidtable, and means 1.-11nasharpeninesievce h1 man bladeaaframefa table; ,Maid framameans l10- ,Shifi Said `table len j Said frame ement .mounted on said on,said blade holder and said sharpening 'element for controlling the rate of movement of a blade" in said holder WiththeV sharpeningrsurface of said sharpening elementat the end of: each L stroke, saidlast named mea-ns comprising rollersl fat each end ofsaid holder and camson `said sharpening element fwhich contact duringone @amasar e Y saidftabienavega:smnmgsorammeans i Y Said' ,taf Meuterei?! said element mY-be pilotedv h-m6 rall with the direction,otmovement in reciprjac,al Y y blader:holdergmeans supporting formovablysupportingzsaid element on Said; bladen. der transvmslr ci?.` said` table, and

\ for plvotally maux-:ting .-,saidflholder whereby` it f i may belshiftedjrelative tosaid table,` `means for y adjusting the Vle'v'elof said bladeholder'where by the angle contactof arblade held therein with" i A afsharpenlng` surface may be regulated,- pulley means on` said blade holder and belt. means on ff said table cooperating tov effect a"shiftingrof said blade holder atjthe 'end of eachlstroke`of said table, and means on said blade holder and said sharpening element forA controlling the rate of l movement of a blade in saidV holderwith the sharpening surface of saidsharpenlng element Y 'at' the end of each stroke, saidlast named means comprising'rollers at each end of said holder and camson said` sharpeningfelement which contact during one portion of vmovement of said table blade in said holderr 1 portion of movement of said tableto control the movement of ablade in said holder towardyor away from the sharpening surface of lthe Sharpe ening element and to control the positionof the sharpening elementrelative to the holder;` V;

2. In asharpening device for histologicalfspecif men bladesa frame, a table onsaid frame, means -toshift said `table on said frame in reciprocalL" strokes, a sharpening elementmounted on `said, table having a sharpening surface, a-bla'deholde Y er, `means supporting said blade holder `trans' wersely of said table and for pivotally mounting said'holder whereby it may beshiftedrelative to said table, means forwadjusting the level 'fof said blade holder whereby the angle contact` of 1 "a blade held therein with a sharpening surface l`may be regulated, pulley means on'said blade holder andfbelt means on said table cooperating to effect"L aV shifting of'lsaid blade holderat the for-controlling the rate ofmovement of a blade in saidholderwith' the sharpening surface ofV element` at: the end of each f said P sharpening 3Q In a' sharpening device for histelogicalspe'cimen blades, a frame, a; tableon said frame, i (means to shift said table on said frame in reciprocal strokes, awsliarpeningelement mounted -1 on saidtable having a sharpening surface, .means i for movablyl supporting said element on said tal ble `wherebysaid elementmay bepivoted aboutA an axis parallel with thedirection-of movement end of each strokeof said table,` and `means on said A:blade holder-and said' sharpening element to control the movement of a toward or away from the sharpening surface of sharpening 'element relative` to the beltsA on each "side of said used on` thetop of said pulleyalte'rnately, and

means for adjusting theftension on `said-belts,` whereby upon movement` of vsaid sharpening suri Y n 'saidbelts will exert-pressure on said blade Vholdervandcause rotation of the'same to azdiiferent position' at ,the end of each stroke off the sharpening sur? face and saldframe,V one set of Y face.

of said table, fa blade holdergmeansksupporting said blade holder transversely offsaid table vand forpivotally.` mounting said holder whereby it may be shifted relative to saidvtableQmeva-ns for `adjusting the level of said blade holder YWhereby theanglecontact of a blade held therein with a` sharpening surface may be regulated, pulleymeans on said `blade holder and belt means on said table cooperating to effect 1a shifting of said blade holder at thelend of" each stroke of said table, and means onsad blade holder and said sharpening elementfor controlling the rate of "movement of a` blade in: said holderlvwith the sharpening surface of said sharpening velement at the end of each stroke.

`4. In a sharpening devicefor histological specimen` blades, a frame, a 'table' on said frame,

means to shift said table on said frame in recip-V l A l l rocal strokes, a sharpening element mounted on imen blades, a` sharpening element havingV a sharpeningl surface, means for iloatinglyA sus` pending said element, ablade holder element `movable to presenteitherlside ofV the Vedge of a blade therein to said surface, means for shifting said elementsrelative to eachother, and means on said sharpening element andmeanson said blade holder cooperating byrnutual contactpositively vto position initially said sharpening ele'-` c,

ment in its floating suspension during a portion of the relatlvemovement between said elementsv i and to gradually lower and graduallyV raise `thef blade to and from saidsharpening surface..

7; `Inca sharpening devicefor histologicalspecf, i imenV blades, a moving `sharpening surface,L a C blade holder movable to present either side of` the edge of a bladetherein `to said surface, means Y for controlling the movement 'of said holder tol ward said surface, means Vfor adjusting said blade Vj relative to said sharpening surface comprising a mounting for shifting `said blade holderV to or l from said sharpening surface, a"protr`actor p o-V sitioned `adjacent said mounting,and a 'pointer on 'said blade holder arranged to register on said 1 protractor the angle of contact of said bladelwith the sharpening surface.

8. In a sharpening devicefor histological specy l imen blades, ya sharpeningV element having a sharpening surface, means" for floatlngly suse-'j `6. `In a sharpeningfdevice forhistologlcal spec# bladethelei t0 'Said Surfa@ means, 'f' Shfllg tive movemenbbetween sad elements prior t said'ielemnts relative to @ach Otheljnd'malls' .blde contact land to l'contrl lthe con's'afct'-move` l on Said sharpenngielementuad meafrisY on SaidVV 5 mentbetweensaid sharpening surfarce and a,

kblade AHolder?ndeperi'dent'ofsaid shifting npleamsv Y blagdjn sadhqlder element.

n' coqperating by rmutual ContactA pgsiizvelyrtolpd- 1

Images