US877517A - Shearing-machine. - Google Patents

Description

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110.877,51?. Mmmm JAN. 2s, 190s.

c. M. PALMER'. mf

SHEARING MACHINE. ff; APPLICATION FILED 822134, 1908.

U N ITED STATES CHESTER M. PALMER.,

BEARING-MACHINE.

'4 To ail whom it may concern:

Be it known that I, CHESTER M. PALMER, a

I citizen of the United States. of Aurora, in the county of Kane and State of Illinois, have in- :J 5 vented certain new and useful Improve- 'ments in Sliearing-I\Iacl1ines and I do hereby ff declare that the following is a full, clear, and ,Lf exact description, thereof, reference being had j to the accompanying drawin s, and to the *'lcjletters of reference marked t ereon, which hilforrn a part of this s ecication.

e This invention re ates to improvementsin -=ehearin machines for shearing or clipping I the woo of animals, and the invention conl"sists in the matters hereinafter set forth and K `:Iriore particularlypointed out in the appendclaims.

fAmong the objects of the invention is to se? improve the pivotal connection of the vibratory cutter lever with the frame; to improve the tension device by which proper tension ofthe cuttingknife is maintained on the guardziingers or comb of the frame; to pro- ,#vide" an 1m roved connection between the isetter and tne vibrator-y cutter lever, and to rovjide an improved construction of the 'art' of the casingr which affords bearing for he driving shaft of the machine. Other ob- 'Iectsof the invention will appear from the` i ho xeg'oing description. :Elda the drawings: Figure 1 is a plan view of eering'machme-made in accordance with fmyf invention. Fig. 2'is a longitudinal, vertical-.section thereof. Fig. 3 is a section, akenn line 3*-3 .of Fig. 2, looking forwardly. "Fig: 4 is a section, taken on line ofFig. 2, looking rearward] Fi 5 is section, takenon line 5-5 of Fig. 4500i:- .wQmg-downwardly. Fig. 6 is a perspective tjlvyiew of the post constitutin the pivot for t-thevibratory cutter lever. ig: 7 is a longiudinal view, similar to Fig. 2 showing a inodiied form of the vibratory cutter lever.

shown in the drawings, A designates, as f l 'awhole the casing which constitutes the slffframe of the machine, com risin a top Wall a, a bottom wall a* and si( e wals a'. Rig- *Ffidlyconnected with the casin is a tubular extension B consisting of a tube aving screw- Q; threaded connection at its front end with the flrear'end of the casin Said tube B affords bearing for the driving shaft C of the ma- ,f chine. The driving shaft is provided at its :rear .end with a gear c which meshes with-L Specication of Letters Patent.

Application tiled September 4. 1908. Serial No. 333.120-

PATENT OFFICE.

Patented Jan. 28, 1908.

l through the medium of which ower to operate the cutter is transmitted) to the machinef The said shaft D is mounted in a tu- I bular casing Dl that has-a hollow or bell- 60. shaped end d* inclosin the gear d and suitably connected wit a like bell-shaped part b of a sleeve b* lthat is slipped over the rear end of the bearing tube B. The bearing i tube B constitutes the handle of the machine, 65 and is, in practice, covered with a suitable leather cover, which overlaps the rear end of the frame A and the front end of the tubular casingD. A E designates the vibratory cutter lever .70 or fork which carries at its front end the'-. cutter El, and is mounted on a 'pivot post 'L F, which latter is dispcsed'transversely to :"i the axis of the shaft C, and 'is rotatively mounted so as to have rocking rnction'iirzsl upper and lower bushings a3 a* having screw- L. threaded connectionswith-the u per and. lower walls a a1, respectivel of t e frame if'. A. The cutter carried by t e forward end'l." of the lever, is provided with teeth e and has 3u vibrator-y engagement with the teeth of a comb or guardlate G, which latter isf-f' attached to the gottom wall of the casing A, as by means of screws g. Said cutter lever E is rovided at its rear end with a vertical soc et E in which o erates a ball- 'f" bearing crank c extending orwardly and eccentrically from the forward end of the Y., driving shaft C, whereby vibratory motion is given to the said cutter lever and the cutter carried thereby, through the rota action of said shaft. In accordance one feature of my invention, the said cutter f .Ex is not carried directly by the cutter lever, -but an intermediate late H, attached to the lever by means o a screwh, is interposed between said lever and cutter. As 1 erein shown, the lateral members or arms. e1 el of the .vibratory cutter lever are apertured and screws or studsv e e extend downwardly throu h said apertures and'f' have screw-threade enga ement with said 17"., L arms and extend also t ough apertures I- in the intermediate sprin or resilient plate H, as shown in Fig. 3. .ihe said screws e are provided with downwardly facing conical shoulders e e (Fig. 3) which oppose up wardly facing conicalshoulders surroundings.;- the apertures of the intermediate or spring plate, and thelower ends of said screws are i5"gear 'd of a shaft D that is adapted for con? ,nection .with a Yflexible shaft, not shownnd -.cylindric and engage .said ope Cutter. partsareprefera ly so arranged: 5in.;

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that the arms of the cutter lever do not bear directly on the sprin or intermediate plate. The said interme iate spring-plate H. 1s provided with forwardly extending lugs 5 or arms h, there being a number of such arms equal to the number of teeth e of the cutter, one arm bearing on each tooth. This arrangement insures a uniform bearing Vof the cutter on the gua'rdlate, notwith- D standing inaccuracies of fit ue to wear or other cause; the. resilient action of the intermediate spring-plate insurin that the said arms of the plate will act wit uniformity to evenly press the cutter on the guard- 5 plate or comb. Furthermore, the flexible or loose connection of the intermediate plate with the cutter lever through the screws e, which also constitute the connection of the cutter with said cutter lever permits the arms of the lever to have a slight pivotal action on the plate, which cooperates with the resiliency of the plate to apply the tension device pressure on the cutter in a manner to insure uniform cutting i action of the teeth on the guard-plate.

Another function of the interposed resilient plate H between the cutter and vibratory cutter lever is that, with the same vibratory cutter leverI resilient cr spring-plates of different dimensions may be used in connection with different sized cutters. For instance, a plate designed to be used in connection with a cutter having but three teeth may be emplo ed with the same advantageous effect, and7 this effect is produced with only the replacement of the spring-platesand without the necessity of replacing the cutter lever itself. lf a cutter having three teeth be elnployed the spring-plate H interposed between the cutter lever and the cutter will be provided with but three bearing lu or arms h which engage'the blades of sai cutter. A further advantage of this arrangement is that, the pressure exerted on said vibratory cutter lever to hold the cutter on the comb or teeth does not tend to break said lever and should such ressure tend to injure the projections h o the resilient plate, which bear directly on 'the teeth of the cutter, the plate H only need to be re laced. The tension exerted on said cutter ever to maintain the cutterin proper 'relation to the teeth of the comb or guard plate is effected through the pivot post F an the construction and arrangement of the parts are such that the post, which carries the vibrato y cutter lever is maintained at all times at the same an le to the cutter lever and all the tension a p led thereto is exerted on the front end of t e lever to hold the cutter against the guard-plate or comb, while the rear end-of the lever 1s free from engagement with a-friction surface. The construchon of the cutter lever 1s freeto rock slightly on its longitudinal;r to permit ad'ust' it to properlyitself and the cutter carried thereby to main tain a uniform contact of the cutter with the guard-plate. The construction of said pivot post and its relation to the vibratory cutter` v ever and tension device will now be describedm The said pivot post F, which is; shown in F ig. 6 as detached from the casing, comprises upper and lower cylindric portie-.ns f f l which have rotative bearing, respectively, with the bushings a3 a* before referred to and extends 75 throug averticalo eninginsaid cutter lever. The post is rovirllad mediate its ends with a downward y facing spherical shoulder f" which engages and bears downwardly on an upwardly facing complementary socket e in the vertical aperture of the cutter-lever E, as more clearly shown in Figs. 2 and 4. The post is also provided with one or more fiat earing surfaces herein shown as formed on a flange f. he said flat surface of the 35 post is designed to engage an o posing hat surface e4 on the upper face of t e lever, as herein shown, for a purpose hereinafter'tobe described. I desi nates a tension screw that extends 9o j? into an has screwthreaded engagement with the upper bushing a. and bears at its lower end on the upper end of the cylindric portion f of the pivot post. Said tension screw is provided with a knul-led headt and the under face of the head is rovided with a I plurality of lugs 'il between w 'ch are formed notches that are adapted to be engaged by the end of'a locking spring J attached to the fil frame of the machine. l`he tension screw 109 operates through its engagement with the upper end of the pivotost, together with the engagement of the sp ierical portiongfl of the post with the com lemental socket e in the cixtter lever and t e engagement of the flattened surface f3 of the post with the flatl tened surface or shoulder e on the cutter ,A lever, to press the cutter lever and the cutter f downwardly. By reason of the engagement 1 of the post at two separated points with the 1105. f lever, to wit,the engagement of the sphef. ical shoulderj' withthe spherical socket of the lever and the engagement of the flattened i surface with the opposing surface e* on the lever, t e lever as it 1s pressed downwardly 115, by the tension screw I maintains afixed angle to the post, and the tension screw acts, t. through the lever, to press the cutter on the .Y guard-finger, but does not press the rear end of the lever a ainst an opposing part o f the bottom wall o the casing. While the cutter t." lever, when thus pressed downwardl by the tension screw, maintains a fixed an e to the- 7. post for the reason set forth, yet the spher-j icaiengagement of the post and lever permits 1.25' a slight rocking movement of the lever on its t parts, howeverz is such that the] longitudinal axis to permit the cutter carried by the. lever to properly adjust iself to the guard-plate or comb, and suchslight rocking mengr ientmof the leveris not e'ected byz-en- "130 gagement of the ilattened shoulders j`-l e* on the post and lever, respectively, because said surfaces are free to slip or oscillate one upon the other. The same results will be secured if 'the relative iositions of said spherical and flattened shoulders of the post be reversed and their contacting surfaces or shoulders on the lever be likewise reversed. A plurality of flattened portions j may be iro'. ided on the post to enable the post, which has only a limited rotativ e mov ement in each reciprocation of the cutter lev er to be partially turned as it becomes worn to present new bearing surfaces of the parts fj" tothe bushings a. a, thereby lengthening the elfcctiw e life of the ost.

T ie provision' of the upper and lower bushings aa a* of the casing possesses the important advantage that when said bearings are worn `so as to aiiect the alineincnt of the ost, this defect may be readily remedied liy merely replacing the bushings, thereby avoiding the necessity ofreplacing the more expensive casing or frame A, which would 25 occur in the event that' the post had direct 'rotative engagement with t le apertures in the upper and lower walls of the said frame.

The arrangement whereby the sleeve in which the driving shaft C has bearing, is made separate from the casing A and has suitable detachable connection therewith, is advantageous inasmuch as it provides an exceedingly simple and durable )caring and one which enables one of the parts to be readily and economically replaced in case of wear, or injury of the other part. The said shaft is reduced, as indicated at b2, to provide an oil chamber within the bearing sleeve or casinur B, and said casing B is provided with an oil 'opening that is closed by a suitable screw b (Fig-.2).

In Fig. 7 I have shown a. modification of the tension device and the vibrato cut ter lever, wherein the spherical shou der fz shown in the other figures is replaced by a flange which engages a recess in the upper face o said vibratory cutter lever. In order to afford the even or uniform adjustment of the forward end of the vibratory cutter lever on the cutter, I make such lever in two parts connected by a screw e therebv permitting the forward end of said lever to lave a slight rocking movement to adjust itself, relative to the rear end of the lever arm as occasioned b the demands or requirements of the fit o the forward part of said lever and its interposing spring-plate H upon the cutter. In other respects, the machine shown in Fi is like that shown the other figures arts are-designated by the same A spring K herein shown as a spiral sprln A.and surrounding the post F, is interpose Between the cutter lever and the bottom wall of the casing for the purpose ofpreinghs lever away from the bottom wall of the cas-A ,l ing and automatically releasing the cutter when the tension device is released. I claim as my inventioml. In a shearing machine, the combination with a casing, a guard-plate and a cutter movable on said guard-plate, of a vibratory cutter lever, a pivot post having rotative bearing in the upper and lower walls of said casing and non-rotatively engaginv' between its ends said lever, means for applying tension to said lever through said post, means whereby the lever and the cutter carried thereby may have' a slight rocking movement with respect to the post to permit uniform pressure of the cutter on the guard plate, and means whereby a fixed angle beh tween the post and lever is maintained, in? cluding a flat bearino' surface on the post which has sliding bearing with the lever. 2. In a shearing machine, the combination with a casing, a guard-plate and a cutter l, movable on the guard-plate, of a vibratorjr lever for operating the cutter, a post extend ing through an aperture in said lever and having rotative bearing in the upfer and lower walls of the casin means for vibratin said lever, a tension evice acting througi the post on the vibratory lever for pressing the cutter against the guardlate, means for effecting even pressure of t e cutter on' the guard-plate, and means for'maintainin the post at a fixed anv'le to said lever, incluf ,I I. ing a fiat surface on tiie post engaging a con1- f' plementai surface on the lever. y

3. In a shearing machine, the combination- '1 with a casing, a guardlate and a cutter movable on the guard-p ate, of a vibratory 1 cutter lever, a pivot post having rotative bearing at its ends in the casing and engaging between its ends said lever, andl means for applying tension to said leverd through said post, said post having an oscillating and sliding engagement with the lever at vertically separated points, for the`pu 119, pose set forth. 4'. In a shearing machine, the combinal tion with a casing, a guardplate, and a cutter movable on the guardate, of a vifbratory lever carrying at its iii-ont end said cutter and free from bearing contact at its rear end with the casing, a pivot post having bearing in the upper and lower walls of the' Af casing and engagi between its ends said lever, means for app tension to the lever through said post, an means whereby a 1 fixed angle between the post and the lever is maintained including a fiat surface on the ost engaging a complemental surface on the j' ever.

5. In a shearing machine, the combina-f tion with a casing, a guard@ late, and a i cutter movable on the guard-p ate, of a. vi' a brntory lever operating said cutter, apost ex-l ."pf' through an aperture Intennediatfno .i v rA the ends of the lever, and having bearing in the upper and lower walls of tbe casing, and a tension device 'acting through said post to press the cutter on said guard-plate, said post being provided with two vertically separated bearing surfaces or shoulders, one made flat and facing forwardly, and the other spherical and fac-ing downwardly adapted to engage conlpleinental bearing surfaces on said lever.

6. In a shearing machine, the combination with a casing, a'guardlate, and a cutter movable on the guard-p ate, of a vibratorv lever operating said cutter, a post extending through an aperture intermediate the ends of the lever, and having bearing in the upper and lower walls of the casing, a tension dcvice acting through said post to press the cutter on said guard-plate, said post having a downwardly facing spherical bearing surface engagirw a com lexuental bearing surface in said lever am provided with a ilattened, forwardly facing surface designed to engage a like flattened surface on the lever between said post and cutter.

7. As a new article of manufacture, a )ivot post for the vibratory cutter lever of a shearlng machine, comprising upper and lower cylindric bearing portions, a downwardly facing spherical bearing, and a laterali)v facing shoulder or flattened surface. on the ost vertically separated from the spherical earing surface.

8. As anew article of manufacture, a ivot post for the vibrator),r cutter lever of a s learmg machine, comprising upper and lower cylindric bearing portions, a downwardly facing s )herical bearing surface, and a flange verticali)r separated from said spherical sur face. provided with a flattened surface, for the purpose set forth.

9. In a shearing machine, the combinai tion with a casing, a guard-plate, and a entf ter movable on the 'guard-piatte, of a 'vibratory lever for operating the cutter, a post extending through an a erture in and nonrotatively engaging sai( lever and having rotative bearing in the upper and lower walls of the casing, means for vibrating said lever, a tension device acting through the post on the vibratory lever for pressing the cutter against the guard-plate, anda spring surrounding the post and interposed between the vibratory lever and lower wall of the casing for the purpose set forth.

10. In a shearing machine, the combination with a casing, a guard-plate and a cutter movable on said guard-plate, of a vibratory lever for operatingl said cutter, a. tension device acting through said lever to press the cutter on the guard-plate, a spring device interposed between said cutter and the forward end of the vibratory lever, and screws or studs extending do'vvnwardbr from the lever and provided with downwardly facing shoulders opposing upwardly facing shoulders on the spring device and provided also with extensions adapted to engage registering openings in the cutter.

11. In a shearing Inaebine, the combination with a casing, a guardlate and a cutter movable on said guard-p ate, of a vibratory lever for operating said cutter and capable of a rocking movement, a tension device acting through said lever to press the cutter on the guard-piate, a spring device interposed between said cutter and the forward end of the vihratory lever, andscrews or studs extending downwardly from the level' and provided with downwardly facing round-- ed s ioulders opposing like upwardly facing shoulders on the spring device and provided also with extensions adapted to engage regI` istering openings in the cutter, said lever and plate being spaced apart for the purpose set orth.

l2. In a shearing machine, the combination with the vibrator)r cutter lever and its cutter, of a spring device interposed between the cutter and lever, screws or studs extending dowx'iwardly from the lever and engaging openings in the spring device, said screws -or studs having. downwardly facing rounded shoulders engaging complemental shoulders on the spring device.

In testimony, that I claim the foregoing as my invention I aflix my signature in the presence of two witnesses, this. 25th day of AugustA. D. 1906. f

CHESTER M. PALMER.

"itnessesz E. J. PoLLocK,

WALTER S. FnAzmn.

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