USRE12131E - Shearing-machine - Google Patents

Description

No. 12,131. 'Y 111115111111111 JULY shaun-3W..

. 0.11. PALMER.

SHEARING MACHINE.

LPPLIUATION FILED JUNE 5| 1903.

Juventa n Thu) M rnqhy..

No.'12,1s1.

- .UNITED f STATES PATENT 'Reissues July 21, 11903.

' OFFICE.

' sHAniNe-MAci-uNE.

srEcmcArIoN fmnngpm of Reissues .Lamis Patent No;

12,131, dated .my 21, '1903.57

origini No. '120.469, ama February 1o, 190s. Anuman for nim. and .Im s. 1ra-o3. semi 160.274'.

To all whom it muy concern: *Be it known that I, CHEs'rER'M. PALM-ER, of Fond du Lac, in the county of Fond du Lac and State of Visconsin, have inventedcertain new and useful Improvements in Shearing- Machines; and I do hereby declare that the following is a full, clear, and exact description thereof, reference beinghad to the ac-V companying drawings, and to the letters of reference marked thereon, which forni a part of this specilcation. i Y g This invention relates to improvements in animal-shearing machines; and theinventi'on consists iin the matters hereinaftervsetxforth, and more particularly pointed ontyin the appended claims.

In the drawings, Figure '1 is a horizontal section of a-shearing|nachine embodying my improvements. Fig. 2 is an end View thereof looking toward the cutter. g plan view of the front or outer end of the machine with parts removed.. Fig. 4 is acrosssection taken on line 4 4 of Fig. `1. Fig. 5-is a detail illustrating the manner of connecting the operating-lever with theknfe. Fi'g. 6 is a plan view of the cutter removed Afrom the other parts.

6.' `Fig. 8 is a ing-screw for the operatinglever and the bushing through which said screw extends.

As shown in said drawings, A designates a hollow casing in which the parts of the operating devices are contained andwhich isrso formed as to constitute ahandle by whichthe machine may be man ually.manipulated..`

B designates a main operating-shaftwhich is mounted in a bushing A, securedin, the

and said ope 1 'fati`ng--` shaft is adapted' to be connected with a sourceL of' power through the medium of aftleXib le.-. shaft.

rear end of the casing,

(Not shown.) The bottomv wall of the casing, at the front end thereof, is made flat, and to the front end of the flat portion of the bottom wall is attached a fiat guardfinger plate C, havin ga plurality of forwardly- Y.

tapered guard-fingers C. D designates as a whole a cutting-knife which reciprocat'es transversely on said guard-finger plat'ega'nd the blades D of said knife coperate with the guard-fingers to produce the shearing vor` cutting action. E designatesas a wholelatdvplane of the guardfingers.

Fig. 3 is a topA Fig. 7 is a transverse section taken on line 7 7 of Fig.

fragmentary bottom plan view of lthe' adjustbearing-s sleeveA hask been adjusted Y bratory operating-lever for said knife D, said lever vibrating on an axis transverse to the The pivot for said operating-lever E consists of a sleeve A4, which is mounted on a pin or bolt A,V

which extends transversely through the casing and has screw-threaded connection therewith. The sleeve A@ is enlarged between `itse'ndsandis Inade'rounded or' generally spherical in said enlarged partv to constitute the bearing whichfii-ts uponsaifl spherically-form ed bearing-sleeve. @ne end of said bearing-aperture is lmade-cylindrical to permit the bearingsleeve'to be inserted into said bearing-socket, while the other end of said socket is made spherical to tit thecorrespondinglyshaped engaging partof the'sleeve.l Said bolt A5, on which the sleeve A is mounted, has screwthreaded egnlgement at its upper end with a bushing A, e which is ext-eriorly screwthreaded a'nd'iits an interiorly-screw-threaded upwardly-opening aperture in the upper casyin,t 1,fwall. end throughanother bushing A, which has exterior' screw-threaded connection with an opening in the bottom vwall of the casing and located in'alinement with the bushing A2. The bearing-sleeve A4 rests at its loweryend on the upper end off-the bushing A?, whereby said sleeve maybeJadgusted vertically by raising and ,lowering the `bushing-A". For the purposevof adjusting saidy bushirigfit is provided at-its lowerend with a transverse slot "a,as shown in Fig. 7, which is adapted to be engaged by a1 screw-driver or the like. Desirably Va short space will be left between the upper end of said bearingsleeve and the lower'end'of the upper bushing A2 to permit of such/adjustment of thesleeve. After said by vu'i'eans ofthe bushing A3 the bolt A5 is turned upwardly. tight against said bushing and holds the same'in place.

The 'operative connections between eratlv er-'shaftv B and the operating-lever E consistfof 1a crank-disk B on the operating- :shaft-,f awris't-pin B2 ou said disk, and aroller fB-sgon-thefwrs't-pin, which. occupies a rearlward'ly-openingnotch e ,formed between forkanrns at vthe rearjofl said lever E in the man- 'for thelever, and the operat` yinglever isv provided witha bearing-socket e,

Said4 holtv also extends at its lower the opleo 'ner clearly showniu Fig. 1. Said notch e is open at its upper and lower sides, so as to permit of the vertical adjustment of the operating-lever hereinbefore described'.

5 'lhe forward end of the. operating-lever El is downwardly bent or offset in front of its pivot to bring the same generally level with the plane of the guard-finger plate, and said forward end ofy the lever is bifurcated,'and

lo the arms E' E'Hthereof bear upon the-opposite l5 the cutter,

sides of Vthe cutter D. As herein shown, said cutter Dr has three separate teeth or sections 'D' D', and said arms E' of the operating-lever bear upon the two outer teeth or sections of as shown in Fig. 3, and are shown as connected therewith by means of bolts e, which extenddownwardly through said forkarms and int-o apertures in the cutter, as most clearly shown in Fig. 5. Y Said operating-lever zo is provided with an intermediate bearing member consisting of a bar E2, which is pivl oted at its rear end between laterally-separated lugs e3, depending from the operatinglever in front of its pivot, as shown inFigs.

a5 1 and 4, said bar being pivotally connected 3o the intermediate tooth or section with said lugs through the medium of a horizontal pivot-pin e4,which extends transversely through the bar and lugs., The intermediate bar bears at its outer-or forward end against of the cntter, as shown in Figs. 2 and 3. A- tension device is applied to said bar for varying the pressure of the cutter on the guard-fingers, so that the sameY will assume proper cutting re- "lation with respect to said fingers notwithstanding wear of said parts. Said tension device is made as follows:

F designates a hollow tension-screw, which has a closed lower end fand has exterior 4o screw-threaded connection with a bushing F', which is seated in asuitable opening in the upper wall of the casing, at the front end thereof. Said lbushing is attached to said casing by means of screws f', which pass through a radial fiangef2 on the upper end of the bushing and into aflat curved seat n',

formed on the upper'casing-w'all, said flange fitting fiat on said seat.

Fzdesignates a jam-n ut, which has exterior 5o screw-threaded engagement with the tensionscrew and is adapted to be turned downwardly upon the upper end of the bushing F' to lock `the tension-screw in place. 'lhe upper open end of said hollow tension-screwis closed by 5 a cap F, which has screw-threaded connec-` tion therewith. The lower face of the-closed end of the tension-screw is flat and is parallel with the plane of the upper surface of the guard-fingers C'. Interposed between 6o said lower closed end of the set-screw andthe `operatin; .5-lever is a friction-plate G, which has a fiat upper surface which frictionally engages the lower surface of the tensionscrew and is provided at its lower side with a depending stud G', which is roundingr at its lower end and fits in a correspondinglyshaped socket in the upper surface of thc invtermediate bearing member E of the operating-lever. The said stud G extends downwardly through on opening in the operatinglever in line ywith said notch of the intermedisomewhat Vlarger than the lug to permit the necessary oscillation of the latter in the operation of the parts. The oscillatory connection of the friction-plate with the lever insures that the plate and the lowerend of the tension-screw shall always beara parallel relation notwithstanding unequal wear in different parts of the screw and plate or cutter and guard-fingers, whereby direct and uniform pressure is at all screw on said cutter. Pressure is exerted by said tension-screw downwardly upon the intermediatebearing member E of the operating-lever and through said intermediate member and itspivot upon said lnain portion of the operating-lever, so that the pressure 'of said tension-screwis exerted on both arms and the intermediate Lbearing member E2 to press the cutter D against the guard-fingers. By reason of the hinged connection of the intermediate member with the main portion of the level' pressure is more accuratelyltransmitted to said cutter than if said parts were made rigid,as in the latter case should there be any inaccuracies of fitof the operating-lever upon the cutter the tension exerted at one side of the lever might be greater or-less than at the other side of the lever.v The construction of the pivot for the operating-lever is such that said pivot maybe slightly raised or lowered to lproperly adjust the lever to the cutter. Through the action' of the tension device the pressure o f the lever'on its pivot is downward, so that in case of wear between said parts the lever will tend to drop into a lower position, and it' no means were provided to compensate for such wear the proper adjustment between the outer or bearingend of the lever and the cutter would be disturbed, so as to impair the shearing or cutting relation of the cutter lades to the guard-fingers. With my construction, however, I am enabled to maintain the .pivot level of the lever in the j same position notwithstanding such wear and at all times to preserve'the initial and accurate adjustment of the cutter with respect to the guard-fingers. The connection between said operating-lever and the shaft B is such that the raising of lthe lever for proper adjustment thereof will not effect the operative connection between said lever and shaft, the

roller of the pin 1:.2 sliding vertically in the' notch in'said shaft when said operating-lever is moved,

As a further and separate improvement the bottom or closed endf of the hollow tensionscrew is provided with a small orifice f3, and the friction-plate G is provided on its upper surface, in line with said orifice, with a depression g, as shown in Fig. 1. Itis intended that the hollow interior of the tension-screwshall be filled with a lubricating-oil, and the ate bearing member, said opening being made times exerted by the IOC IIO

parts are 'so designed that the oil passes through said orifice f upon the plate to lubricate the friction-surfaces of the plate and tension-screw. rlhe central depression of the plate enables the oil to dow freely to the plate when the orifice is in line with said depression and also acts to hold the lubricantin a small body to be effectively applied to the bearing parts.

Each of the teeth or sections of the cutter is made tapered or pointed from their inner to their outer ends. Said teeth .or sections are made generally of concave-convex shape in cross-section and of substantially equal thinness from one side margin of each tothe other, and the side margins d' d', Fig. 6, of each tooth or section constitute the cuttingblades thereof, which blades are sharpened at their edgesaud bear against the upper faces of the guard-lingers. Said teeth or sections are continued at their outer ends to almost a point, and each tooth is provided at A its outer end between the blades with au iuwardly-extended Vfshaped notch d, as most clearly shown in Fig. 6.- Said notches serve to slightly separate the blades of each tooth at the outer end thereof, thereby giving to the ends of the blades capacity to flex slightly iu order to adjust themselves to the guardlingers properly under the action of the tension device. The rear portions or bases of the teeth or sectionsDl are provided on their opposite margins at the rear ends ofthe blades with notches di, Fig.V 6, which somewhat free the rear-end of each blade from the body of the cutter, so that said bladeis free to flex slightly throughout its active or cutting portion. By providing the outer ends of the teeth or sections with the V-shaped notches d, before mentioned, I am enabled to retain.

practically the maximum length of the effective cutting portion of the blade and at the same time render the outer ends of said blade suitably flexible. A further advantage of providing. said teeth or sections with the V- shaped notches described is that said teeth may be made to assume a relatively sharp point, while at the Sametime the forward ends of the blades are unconnected and separated suchdistances as to 'give the desired iiexibility ,to the blades. Where said teeth or sections are formed with a sharp point, the

forward or outerr ends of the blades are .con-

vnected, so as to prevent the flexibility desired at the outer ends of the blades. The construction described is also superior to a construction wherein the outer ends of the blades are cut off square or abrupt, as in my improved construction the ends of the teeth are not so blunt, while at the same time the blades possess the'same or greateriiexihility.

Changes may bemade iu the Astructural details without departing from thespirit of my invention, and I do not wish to be Iimited'to suchgdetails except as hereinafter made the subject of specific claims.

` 1. In a shearing-machine, the combination with a casing, guard-fingers at the frontend thereof, acutter movable on said fingers.a vi- -bratory operating-lever connected with and pressing said cutter against the guard-lingers and a tension device acting on said lever, of a pivotal support for said lever comprising a bolt extending transversely through said casing and having scre w-th readed connection at one end with said casing, a sleeve on said bolt provided with a rounded or spherical beariug-snrface adapted to engage a correspondingly-shaped aperture in the lever, and a bushing'through which said bolt passes and on which said sleeve rests, said bushing being adjnstably connected with the casing.

2. An animal-shearin g machine com prisin g a casing, guard-fingers at the front end thereof, a cutter movable on said guard-fingers, a

vibratory operating-lever provided' with laterally-separated arms which bear upon the cutter at the sides thereof, and with a pivot-r ed intermediate bearing member which bears at its forward end upon the intermediate;l

the guard-fingers, embracinga friction-plate,

interposed between said intermediate member of the lever and an opposing part of the casing, said friction-plate lbeing capable of oscillating with respect to the part nn which it is supported. v

3. In an animal-shearin g machine, the com-V bination with a casin guard-fingers at the front end thereof, a cutter movable on said guard-fiugersand a vibratory operating-lever provided with laigarally-separated arms which bear upon the utter and with a'pivoted intermediate. bearing member which bears at its outer end upon the intermediate part of the cutter, of a tension device embrac- -iug a screw extending through said casing and provided with an inwardly-facing friction;

FIO

surface, and afriction-pla'te on said iutermethereof, a cutter movable on said guard-tngers, a vibratory operating-lever provided with laterally-separated arms which bear ou said cutter, and with-an intermediate pivotal member which bears at its outer-end against the intermediate part of the cutter, a tension device acting on said lever between its pivot and said cutter, a rotative operating-shaft and loose driving connections between said shaft and lever, in rear of the pivot of said lever, of means for adjusting the pivot-beariugof said lever in a direction transverse to the plane of vibration thereof..

5. In an animal-shearing machine, the combination with a casing, guard-fingers at the front end thereof, a cutter movable on said guard-ingers and a vibratory operating-1ever connected with and pressing said cutter against the guard-fingers, of a tension device embracing a friction-plate interposed between said operating-lever and an opposing part of the casing, said friction-plate having oscillatory movement with respect to the part on which it 'is supported, and means for automaticallylubricatin g the bearing-surfaces of said tension device.

6. In ashearing-machiue, the combination with a casing. guard-fingers atvthe front end thereof, a cutter movable on said guard-tingers and a vibratory operating-lever connected with and pressing said cutter against the guard-fingers, of a tension device embracing a hollow screw extending through said casing and provided with an inwardly-facing bearing-surface adapted to engage an opposing bearing-surface on the lever, the inner end ot said screw being provided with an orifice through which a lubricant may pass from the interior of the screw to said bearing-surfaces.

7. In a shearing-machine, the -combination with a casing, guard-fingers at the front endtbereof, a cutter movable on said guard-iingers and a vibratory operating-lever connected with and pressing said cutter against the l guard-fingers, ofa tension device embracing a hollow screw extending through said casing and provided with an inwardly-facing bearingsurface adapted to engage an opposing bearing-surface on the lever, the inner endof said screw being provided with an oriice through which a lubricant may pass from the interior of said screw to said bearing-surfaces, and said lever bearing surface being provided in line with said orifice with a depression.

S. In a shearingmachine,the combination with a casing, guard-fingers at the front end thereof, a cutter movable on said guard-fingers, and a vibratory operating-lever conf nected with and pressing said cutter against the guard-ngers, of la tension device embracing a hollow screw extending through said casing and provided with an inwardlyfacing bearing-surface and a friction-plate having looseor oscillatory connection with the operating-lever against which the inner end of the tension-screw bears, the` said inner end 'of the screw being provided with an orifice through which a lubricant Vmay pass from the interior of said screw to the bearing-surfaces of the screw and said friction' plate.

9. Acutter for shearing-machines havingA a plurality of teeth, the side margins of which consti-tute cutting-blades, the said teeth being provided at their pointed. ends with rearwardly-extending V-shaped notches whereby thel blades are separated at their forward en s.

e 10. A cutter for shearing-machines a plurality of teeth, the side margins of which constitute cutting-blades, said' blades being 'disconnected from the body ofthe cutter at the rear ends thereof, and the teeth being provided at their pointed ends with rearwardlyextending notches which separateV the forward ends of the blades. i

11. In 'a shearing-machine, the combination with the guard-fingers, of a cutter mov able on said guard-fingers, the side margins of the teeth of said cutter constituting cutting-blades, and said teeth being provided at their pointed ends with rearwardly-extending notches which separate the forward ends of the blades.

12. In a shearing-machine, the combination with a casing, guard-fingers at the front end thereof, a cutter movable on said guardfingers, and a vibratory operating-lever connected with and pressing said cutter upon having i the guard-fingers, of a tension device embracing a friction-plate interposed between said operating-lever and an opposing part of the casing, and means for applying lubricant to the bearing-surfaces of the tension device. e

13. In a shearing-machine, the combination with a casing, guard-'fingers at the front end thereof, a cutter movable on said guardtingers,and a vibratory operating-lever connected with and pressing said .cutter upon the guard-fingers, of a tension device embracing a friction-plate interposed between said operating-lever and an opposing part of the casing, saidvfrieton-plate having oscillatory movement on the part on which it is sup ported, and means for applying a lubricant to the surfaceof the friction-plate.

In testimony that I claim the foregoing as my invention I aix my signature, in the presence of two witncsses,'this 16th day of May, A. D. '1903.

CHESTER M. PALMER.

Witnesses:

WILLIAM L. HALL, GEORGE R. WILKINs

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