US1163819A - Shearing or clipping machine. - Google Patents

Description

A. HAWTREY.

SHEARING 0R CLIPPING MACHINE.

APPLICATION FILED APR.10, 1913.

Patented Dec. 14, 1915.

Inventor witnesses I W /Q $2M (&v of

NED @TA Arnr @FFICE.

ARTHUR HAWTREY, OF BUENOS AIRES, ARGENTINA.

SHEARING 0R CLIPPING MACHINE.

Thrill whom it may concern:

Be it known that I, ARTHUR HAw'rREY, a citizen of the United States of America, residing at 671 Calle Maipu, Buenos Aires, Argentina, have invented certain new and useful Improvements in Shearing or Clipping Machines, ofwhich the following is a specification.

This invention relates to machines for shearing or clipping the wool or hair of animals and for similar uses of the type in which oscillatory members in conjunction with spherical bearings are employed and in which also oscillatory members comprising two rigid fingers and a central finger and a tension pin having a fixed bearing base in the casing have been proposed or employed.

Heretofore in connection with machines of the type referred to certain objections have obtained, principally as a resultof the means for applying the tension being liable to serious wear and depreciation incidental to the great vibration to which the parts are subjected and which their construction is unadapted to resist or of their being of such a form that considerable friction occurs in working with a consequent waste of energy and undue heating of the machine.

The present invention is designed with the principal object of remedying the above mentioned defects and to this end consists in providing a novel combination and arrangement of parts whereby the oscillating arm which operates the cutter is supported and actuated in such a manner that the necessary pressure or tension for maintaining cutting contact between the combs and cut ters can be applied and maintained in an improved manner. The oscillatory member or lever which comprises rigid outer fingers and a finger adapted to exert pressure or tension on and actuate the cutter, is therefore adapted to maintain its operative relation to the cutter by means of an adjustable semi-spherical support arranged at or near the inner end or heel thereof and a tension pin whereof one end rests upon or against a rigid or immovable seating or base in the casing of the machine and theother end upon thecenter or. thereabout of the said lever or member.

In order that the said invention may be clearly understood and readily carried into effect, I will proceed to describe the same its movements.

Specification of Letters Patent. Patgnted D 14 19j] 5 Application filed April 10, 1913.

Serial No. 760,138.

more fully with reference to the accompanying drawings in which Figure 1 is a plan of a shearing or clipping machine having the present improvements applied thereto. Fig. 2 is a longitudinal section taken along the line A-B in Fig. 1. Fig. 3 is a transverse section taken along the line CD in Fig. 1. Fig. 4 is also a transverse section similar to Fig. 3 illustrating a modified arrangement for effecting the application and regulation of the aforesaid tension or pressure.

The casing or metal cover 1 serves as a handle and as a container for the operating mechanism. The comb 2 is conveniently secured to a seating at the under side of the front part of the casing;'the cutter 3 being held in position on the comb by the oscillatory member or lever arm 4 which is provided with two outer rigid horns or fingers cutter. The center of movement of the said member or arm 4: is constituted by a bearing 5 adapted to rest on a semi-spherical seating formed or provided on a movable support 6 which extends transversely of the machine and is retained in position by guide pins or screws 7 and actuated by the central screw 8. This arrangement, as will be readily understood, enables the support 6 to be moved upward or downward as a nut on the screw 8. The tension pin 9 bears at or about the center of the said member or arm 4; the said pin having a spherical lower end for that purpose. The upper end of the pin presents a convex bearing face of a semi-spherical curvature whereof the center is common with that of the spherical part at the lower end of the pin. The bearing for the said upper end of the tension pin is constituted by a steel disk 10 which is arranged in a plane parallel with that of the comb seating so as to insure a perfectly even and constant pressure to the member or lever arm 4t and thereby to the cutter throughout The said disk which serves as a fixed or rigid base for the convex face of the tension pin is retained in position by means of the bushing 11 which is screwed into the cavity formed in the inner side of the upper part of the casing or cover.

The operating lever 14L whereby the oscillating motion is imparted to the member 4.

is mounted upon'a flanged bushing 12 which receives the upper end of the central screw 8 and which is itself screwed into the upper side of the casing or cover 1; a screw cap or look nut 13 securing the said bushing "in position, which thereby serves as an axis for the movement of the lever 1%. One end of the latter is formed so as to serve as the race for the roller 15 carried by the eccentric pin pertaining to the disk 16 on the shaft 17 common to the type of shearing or clipping machines referred to. The other endot'jthe lever 14: is perforated sons to allow of'the passageand free'play through thesaihe 01 tlie' iensioi Pin 9 and isformed'with a 'biiurcat'ed termination adapted to closelyjengage thef'm'ember or lever arm' 4; the close engagement being however of such a charactei' 'as nottofprevent the saidhnernber' from adjusting itself to the necessary angles "which it maybe 'requiredto assume 'in re'lationto' the support 6' and tlie cutter 3 in order to compensate for wear or' p'o s'sible-inclinationo fisame. k c p d r c The central screw 8 constitutestheprincipal member for effecting the ustriient of the tension or pressure as by rotating'the "'samefin the one or the'other direction the sujport is raisedor loweredhnd 'thereby the me'mber'or lever 4Eis causedtoekert'inore 'or less pressure on the'eutter 3, The said screw 8 is" formed or provided with a collar 18 which resides inla recess pertainingfto v a transverse plate 19 rigidlysecured in'positionby the guide pins or screws 7. I The casing or cover 1"has an opening at thelower 'sideof suchdiinension as to allow the easyjn'iounting and'dismounting ofall the internal parts, the said opening bei'ng providedwith cover plates 20 and 21 secured in'position in any com enientmanner. Upon withdrawing the guide pins or screws 7 the plates 19, 20 and 21 may be readily detached and the whole of the internalparts easily dismounted. r 'In Fi'g. 4f the central screw 8 is actuated from the upper side of the casing thelower extremity being coned and seated in'afcorres'ponding conical shaped cavity formed in "the transverse plate 19. It will thus beseen that the manner of moving the support 6 ma be varied without altering the principal mechanism whereby the tension orfpressure is applied to the cutter irrespective of the grade of in'clination it'may assume during its movement. The oscillating operating lever'l i, as' reviously stated, moves rotativly 'oroscilla'tjes on the bushing '12vasan aXis f and is actuated by the rotation of the eccentric disk 15"carried'by the shaft 17 the lever 14 transmitting the resulting "oscillatory movement thereof to the member or lever 4 means of the bifurcated extremity which engages on the saidfinember or lever 14: as

liereinb'efore described. As a result of the member or arm 4 bearing on the semispherical' surface on the support 6 and of the. center of the said bearing coinciding with that of. the bushing 12, whatever the degree of "inclination ofthe said arm the latter and the lever 1d move together about the same center; avoiding any sliding or frictional movement between the points of contact of the parts during operation. If it be desired 'toincrease the pressure between the cutter 3 and comb 2 the central screw 8 should be rotated so'asto' rai'se'the support 6; thisfmovement of the latter will have the effect otraisingthe hearing or inner end of theineinberorlever at but as the movement of this member at" the forward end thereof is l'inriitec l in 'the upward direction by the tension pin s, it follows that the aforesaid raisinpnor upward force at this partof the stt'du'neniber, is converted into downward pressure,- Theoperationof tliediflerentparts of the "mechanism "having been described their f inovenients inrel'ation toeach other willnow r f-apparent. v p l WVhafiI claim and desire to' 'secureby Let- "t'ers Patent of the United states is 'lfilriashearingbr clipping machine, the

T n of a comb, a cutter,"anoscil- I terminati- I "nary-s mba forimparting movement to "said cutter, an adjustable semi-spherical support 'for the inner end of said oscillatory refine itieansf'fm adjusting said's'emispherical "support, fmeans intermediate of f'saidberh sp oiistru'ctedfandarranged to maintain ten- "sion" on' said oscillatory member, andjan. actuatinglev er arranged abovesaid oscillatory meiiibefarid adapted toturn about the same axisfand impart movement "thereto.

Injashearing or clippingma'chine, the flc'r'iinbiiiat-ibn'ofacomb, ac'utter, an oscillaijt olryffi ember for imparting movement to -*saii;utte1-;an adjustable semi-spherical support' for said oscillatory member, formed on I aftr'ansverse bar, guides for said support, a flcrew th'readed member for supportingand factuating said semi spherical support, means "constructed and arranged to maintain tension ion said oscillatory member and an actuating lever arranged above said 'oscilla tory mmberand adapted to turn about the "same axis and impart'movement thereto.

In a lshea'ring'or clipping machine, the coiiibination of acomb, a cutter,"an oscillatory member 'for imparting movement to *saichc utt er, an'adjustable support for the inner" end of'said"oscillatorymember, a screw-threaded' supporting and actuating 1 member for" said adjustable support, means 'constrlic'tedand arranged to maintain tension on said oscillatorymember, an actuatinglever'f'or said oscillatorymember, and a flanged bushing for supporting said actuating lever, said bushing also constituting a 'vhich isthus exerted ontlie cutter.

member, a screW for supporting and actuating said semi-spherical support, means constructed and arranged to maintain tension on said oscillatory member, a bushing arranged above said oscillatory member and adapted to support one end of said screw, a

flange on said bushing, and an actuating lever mounted upon said bushing, supported 15 by said flange, to turn about an axis substantially coincident With the axis of said oscillatory member, and impart movement thereto.

In testimony whereof I aflix my signature 20 in presence of two Witnesses.

ARTHUR HAWTREY.

Witnesses:

L. MELLERSH-JACKSON, T. SELBY WARDLE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G."

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