US1868266A - Work supporting attachment for abrading machines - Google Patents

Description

July 19, 1932. E. WOODSEND 1,858,266

WORK SUPPORTING ATTACHMEN T FOR ABRADING MACHINES Filed March 6, 1929 a Sheets-Sheet 1 Jae/Mow Z, eJ/x L. 7755/36/70 3 Sheets-Sheet 2 July 19, 1932. E.- WOODSEND WORK SUPPORTING ATTACHMENT FOR ABRADING MACHINES F iled March 6, 1929 fave/7601" Les/1e L. h oodse/m min n a 4 6 m a 2 mm x w 3 x y 1932- E. WOODSEND 1,868,266

WORK SUPPORTING ATTACHMENT FOR ABRADING MACHINES Filed March 6, 1929 3 Sheets-Sheet 3 fjuhlr6 v Les/A L 5 9002135770 I jetty/my Patented July 19,1932

UNITED STATES LESLIE n. woonsnn'n, or Los 'ANGELE'S, CALIFORNIA wonx surronfiue-nrraonmtmr ron aBRAnIne MACHINES Applicati on filed March '6,

My invention relates to and hasfor a purpose the provision of a work supporting attachment for abrading machines particularly adapted, although not necessarily for use 1n the sharpening of the rotary cutter of afcon ventional meat grinding machine and the facing of the perforated disk or plate which confronts the rotary cutter in such a machine; my attachment being characterized by its capability of supporting and guiding these parts with respect to an abrading element such as a grinding wheel of a conventional grinding machine, in a manner to insure such accurate grinding of the cutter and disk that they will have maximum cutting co-actlon when in use.

I will describeonly oneform of work sup- I V r pflses a cutter holder designated generally at" I and including a bodyf'12 in theform'. of a porting attachment for abrading machines embodying my invention and will then point out the novel features thereof in claims.

In the accompanying drawings,

Fig. 1 is a View showing in side elevation a conventional abrading machine with one form of work supporting attachment embodying my invention associated therewith for the sharpening ofthe blades of a rotary cutter as used in certain meat grinding Inachines. V j

Fig. 2 is a view in end elevation partly broken away of the abrading machine and attachment shown in Fig.1, I

Fig. 3 is a plan view partly broken away, of the attachment shown in the preceding figures, and inconjunction with a portion of the abrading machine. 7

Fig. 4 is a view in plan of a portion of a conventional abrading machine with the attachment embodying my invention as used in supporting and guiding the perforated disk or plate ofaconventional meat grinding machine for facing of the disk, and

Fig. 5 is a view in end elevation of the abrading machine and the attachment shown in Fig. 4. b l

Referring specifically to the'drawings in which similar reference charactersdesignate similar parts in each of the several-yiews, and particularly to Figs. 1 to 3 incli1'sive,my invention in its present. embodiment. com;

1929. Serial No; 344,766.

prises abaseiB preferably constructedof'j metal and of rectangular. outline, to which is secured by bolts 10, a suitable power unit inv the form .of an electric motor M, the shaft 11 of which projects horizontally therefrom and hasdetachably secured thereto in any suitable manner anabrading element prefer ably in the form of a grinding wheel W, so that when the motor isin operation, the wheel will be rotated at, a high speed to effect grind- 5 ing of any work brought into contact therewith. The motor andgrindingwheel constitute a conventional form of abrading'mas chine, and the base B provides a common sup;

attachment to be presently described.

port thereforand for thelw'ork supporting The work. supporting attachment com ported ;:and a flat head 19 against which the cutter is adapted to. abut for clamp ingbetween the head andbodyby means a nut 20 on the shank 15. H

. The conventional cutter C illustrated and used in certain types of meat grinding machines is in the form of a metal spider having four equallyspaced radial arms "constituting cutter blades 21 which are provided with cutting'edges 22 extending lengthwise of the blades and disposed inone and'the' sameplane for co-action with the perforated metaldisk or plate illustrated in Figs. "4 and 5, inefl'ecting a cutting ofmeat as forced through the perforated plate, all of which 5 willbeunderstood those familiar withthe art. This' cutterC isprovided witha square axially; disposed opening in which the non? circular portion 18 also illustratedfasbeing f square, iS,adaptedto' fit to support the eras;

on the stud 16 against rotation. The cutter is also recessed axially on its outer face to receive the head 19 of the'stud so that the head is flush with the outer face of the cutter.

be clamped in a fixed position on the body with one of its cutter bladesg21 projecting laterally from one side of thebody'as'shown 7 in Fi 3 for sharpening of its cutting edg 2:2 by the abrading wheel W; v

It will be clear that the position of the cutter circumferentially with respect to the 'stu d-.1 6 or the position of the stud circumferentially with respect to the body12'can'be changed to dispose any one of the four: cut-' tingblades of the cutter in asingle predetermined position for "sharpening, due to the provision. of the squared portions 17 and '18 of the stud and the co-act'ing square socket 1 3 and square axial opening inthe cutter respectively, permitting the cutter to bead,

justed circumferentially to occupy any one of four positions upon'looseningof the nut 20 sufiiciently to permit partial withdrawal of V the stud 16 from the body 12.

The cutter? holder H is adapted to'be mounted for such movement that acutting blade 22 of theicutter' carried bythe holder can: be presentedtothe abrading wheel in a manner to effectsharpening of the blades V cutting edge, andto this endI providein theijpresent' instance a'projection 24 on the base B having a cylindrical bore 25 there'- r 7 through extending parallel to the'axis of the shaft- 11;and in the bore25 is journaled for rocking movement andfor" sliding movement longitudinally of the bore, "a cylindrical extension 26 projecting laterally from and at rightangles to an arm 27l1aving a squared 1 portion 28 freely extending through a correspondingly shapedbore 29 formed in the body 12, tothus support the cutter holder.

' in the form of a bar disposed in the path of. swinging movemeutof the arm '27 in for sliding movement on the arm. To secure the holder a fixedpo'sition on the arm a clamping screw 30 isthreaded into the body 112 and-bears against afiat surface of'the ,squared portio 25;;

In the operation of the attachment thus far described,- let it be assumed that the 'motor M is in-operation and the cutter holder H with a cutter C secured thereto is secured in the fixed position on the-arm 27 as shown in'Fig 2. As the, bore 25 is parallel to the axis of the shaftll and the cutter C is supportedby the 'holderHwith its cutting bladesQl dis-.

' posed in a single'plan'e' also parallel to the the holder is grasped andthe arm 27gswung towards the wheel W, the particular cutting; blade'21 ofthe-cutterlC occupying. the pre determined position above referred towill be: presented flatwise to the: peripheral sue,

axisof theshaft 11,. itwill be clear that-as face of the wheel and will extend transversely of the peripheral surface. With a cutter blade held in contact with the wheel W the blade is caused to move longitudinally back and fforth across the peripheral surface of the wheel, by shifting the arm 27 laterally in opposite directions to cause the extension 26' to slide longitudinally back and forth in the bore 25 so that the cutting edge 22 of the blade will be uniformly sharpened throughout its, length." Each of the four ,ciitterbladesgl' is sharpened in the same manner, it only being necessary each time another blade is to be sharpened, to adpist the'position of the cutter C circumferential- 9 lyi n the'hold e r H to successively disposeeach blade i'n the single predetermined position for sharpening. It will be noted that'the body '12 is provided with a square projection 31' adapted to fit into the axial opening of the cutter C to fixedly support the latter in any oneof four positions circumferentially soithat the blades 21 of the cutter can be presented edgewise to the peripheral surface of the 'wheel l V' as shown in broken lines in Fig. 3', for the removal of any feather edge remaining on the blades after sharpening.

In order to-insure that the cutting edges :32 of fall the blades 21 will be disposed in one and the same plane when the blades have been sharpened, I provide a means'for limiting the swinging movement of the arm 27 in presenting a 'cutter blade to the wheel VVfor sharpening. In the present instance this.

means comprises a post32 having a squared lower end 33 removably fitted in a similarly shaped socket 34 formed in a boss 35 projecting upwardly from the base 13 {the post being "secured against displacement byv means. of a set screw 36 threaded into theboss and'bearing against the squared end 33 of thep'os't. The post isprovided adjacent its upper end with a transverse'opening 37 of square *cross-section in, which is slidably mounted 'a square shank 3 8' of, an abutment presenting a cutjter blade to the wheel WV, and extendinglengthwise 1n a direct on parallel to the axis of the'shaft 11.171 0 secure the: abutment 39in a fixed position of adjustment onlthe post, a set screw 40 is threaded into the latter and bears against the shank 3 8. g

' It will be clear that the abutment limit-s the movement of the arm 27 in presenting acutting blade to the wheel, to-a definite position so when all the cutter blades 21 have diskc23'previously referredto. 1

It will be noted that by changing the positi'on of:the cutterholder 1-1 along the length offthe. arm "27, i the positions verticallyjat which the cutter blades 21 will be presented to the peripheral surface of the wheel W will accordingly Vary so that thecutting edges of the blades when sharpened, will be relieved to a greater or less extent. As

the amount of relief required for cutters of different diameters varies, it will be clear that this condition is compensated for by the adjustability of the holder on the arm; and to indicate position that the holder should occupy along the arm to obtain the amount of relief required for the particular size cutter to be sharpened, the squared portion 28 of the arm is preferably scored at predetermined intervals along its length as indicated at 41 for co-action with the body 12 in determining the proper position of the holder for each size cutter. The adjustability of the shank 38 in the post 32 permits the position of the abutment 39 to be varied to compensate for variations in the position of the holder H along the arm 27.

Referring now to Figs. 4 and 5, I have herein shown the manner in which my attachment is used for the facing or grinding perfectly flat of the side face of the perforated disk 23 which confronts the cutter G in the use of these parts in a conventional meat grinding machine. The holder H is removed from the arm 27, and for the holder is substituted a holder H which comprises a bracket 42 having at one end a split clamping head 48 slidably receiving the arm 27 and adapted to be clamped to the latter by a co-ac-ting' threaded stud 44 and a nut 45. The opposite end of the bracket is provided with an arbor 46 of cylindrical form, which in the applied position of the holder H to the arm 27 as shown in Fig. 1 extends lengthwise in aplane parallel to the axis of the shaft 11.

The conventional disk 28 is provided with a central hub 24 having therethrough an axial bore 45 receiving the arbor 46 to support.

the disk on the holder H in parallelism with the outer side surface of the wheel W so that by simultaneously rocking the arm 27 about its axis and pressing the disk against the wheel WV, the side of the disk confronting the wheel will be ground perfectly fiat and true. In grinding the disk, the post 32 with the abutment 39 are removed so as not to interfere with the swinging movement of the arm 27. When the abrading machine is to be used for other purposes, the arm 27 can be removed from the base B by withdrawing its extension 26 from the bore 29 so that the abrading machine will be entirely unobstructed by my attachment.

Although I have herein shown and described only one form of Work supporting attachment for abradin machines embodying my invention, it is to be understood that various changes and modifications may be made therein without departing from the spirit of the invention and the spirit and. scope of the appended claims. 1

I claim:

1. An attachment of the character idescribed comprising a body having non-circular socket, a cutter supporting stud having a"non-circular po'rtion on which a cutter isadapted tobemounted and a head against which the cutter is adapted to abut, the stud having a second'non-circular portion fitting said socket, means for securing the stud to the body with a cutter on the stud clamped between the' head of the stud and the body, and means for mounting the body for such movement with respect'to an abrading element that a cutter carried by the body can be presented to the abrading element in a manner toeffect'sharpening oft-he cutter blades cutting edge. 7 g a 2. In agrinding machine havi-nga rotary abrading wheel. an attachment therefor c'onr prisinga body having non-circular socket, a cutter supporting studhaving a non-circular portion on which a cutter is adapted to be mounted anda head against which the cutter is adapted to abut, the stud having a second non-circular portion fitting said socketymeans for securing the stud to the body with acutter on the stud clamped between the-head of the stud and the body, and means for mounting the body for such movea cutter carried by the body canbe presented to the abradingelement 'in'a manner to ef-- fect sharpening of the cutter blades cutting edge, said means comprising aniarm on which i the body isjsu'pported, having a laterally projectingcylindrical portion, and means for mounting the cylindrical portion ofthe arm for rocking movement about an axis parallel to the axis ofthe abrading wheel and sliding movement in the. directionof its length, and means for definitely limiting the rocking movement of the arm towards the abrading socket, a cutter supporting stud having a non-circular portion onwhich a cutter is 'adapted to bemounted and a head against,

which the cutter is'adapted'tofabut, the stud havinga second non-circular portionfitting said socket, means'for'securing the stud to the body with a cutter'on the stud clamped between the head of the stud and the body,

and'm'eans for mounting the body for such I movement with respect to the abrading wheel thata cutter carried by the body can be presented to the'abrading element in a manner to eifect sharpening of the cutter blades cutting edge, said means comprising an arm of non-circular cross section-on-which the body is slidably mounted,means for fixedly securingthebody tothe arm against sliding movement with respect tothe abr'adingwheel that 9 Jen 4 o r I V 7 1,868,266

the cylindrical portion of the arm forfrocking movement about an axis parallel to the axis of theabrading wheel and sliding movement in the direction of its'length, and means for definitely limiting the rocking movement of the arm towards the abrading wheel;

et. An attachment of the character describedcomprisinga body having non-circular socket, acutter supporting stud having a noncircularrportion on which a cutter is adapted to be mounted and a head against which the cutter is adapted to abut, the stud having a second non-circular portion fitting said socket. and ajthreaded shank extending through the body, a'nut threaded on the stud 'for 00- action with the head of the stud in clamping o a cutter on the stud between the head and body, andvmeans for mounting the body for such movementwith respect to an abrading element that a cutter carried by the body can be presented to the abrading element inva manner to'e'flectsharpeninge'of the cutter blades cutting" edge 5,111 an attachment of the character described,facutterholdercomprising a body having a; non-circularsocket, a cutter sup- ,porting stud having a non-circular portion on which a cutter is adapted to be mounted V and a head against which the cutter is adapt ed to abut, the stud having a second non-cir- 'cular portionfitting said socket, and'means for securing the stud to the body with a cutter on the'stud clamped between the head;

o 3* ot the stud and the body.

6.'In an attachment of the character described, a cutterholder comprising a'body having a non-circular socket, a cutter supporting stud having anon-circular portion on which a cutter is-adapted to be mounted and ahead 'against'whichthe cutter is adapt V V ed to abut, the stud having'a second 11on-eir-' cu'l'ar portion fitting said socket and a thread- 7 ed shank extending through the body, and :a nut threaded on the shank for-clamping a cutter on the stud between the head of [the stud and the'body. I v

7-.- In an attachment ofthe character described, a. cutter holder comprising a body having a non-circular socket, a cutter support- I ing stud having'a non-circular portion on which a cutter is adapted'to be mounted and a head against which the cutter'is adaptedto Y abut, the stud having a second non-circular portion fitting saids'ock'ehand means for securing the stud to the body with a cutter on" the studclamped between the head of the stud and the body, the body, having anon-circular 7 projection on which the cutter is adaptedto V be mounted. v I 1 I j LESLIE E. W OODS EN Dr

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