US621560A - Mechanical clipper - Google Patents

Description

No. 82|,580. Pmnfed Mar. 2|, 1899. w. P. FREEMAN.

MECHANICAL GLIPPER;

v (pplication led Feb. 25, 1898.)

(NO Model.)

ATTOR/VEY UNITED STATES PATENT OFFICE.

WARREN r. FREEMAN, or NEW YORK, N. Y., Assieno'a, BY MEsNE Assien'- MnN'rs, rro Tim nnrmn ELEo'rnioAL MAOHINERY COMPANY, or New JERSEY.

sncirIoArioN' forming part of Letters Patent' No. 621,560, aatea March 21, 1899, Appllmfiil filul February 25, 1898. Berial No. 671,688. (No model.)

To all whom/ it may concrn:

Be it known that I, WARREN P. FREEMAN, of New York, in the State of New York, have invented certain new and useful Improvements in Mechanical Clippers, of which the following is a description, referring to the accompanying drawings, which illustrate one preferred embodiment of the invention and form a part of this specification.

The object of the invention is to prod uce an electrically-operated clipper which may be extremely simple in construction and convenient in operation,

In the drawings, Figure lis a central crosssection through the handle or frame of the apparatus. Fig. 2 is a cross-section on the planie 2 2 of Fig. 1, and Fig. 3 is a cross-section of the field-magnet on the plane 3 3.

Throughout the drawings like letters of reference indicate like parts.

The field-magnet B preferably consists of a single casting, as shown, and provided with the projecting pole-pieces B', which inclose the armature A. The field-magnet coil F is wound around the core of the field-magnet, so as to be protected by the overhanging projection b. The field-magnet therefore not only proteots the armature, but the greater part of the field-coil as well. The shaft of the armature A is supported in the two nonmagnetic bearing disks or plates D D', which are secured directly to the field-magnet. The commutator-brushes and brush-holders may vbe secured to one of these plates or disks and the circuits arranged in the usual manner. These electric features of my invention may be widely varied to suit different electrical conditions, and I make no point of these details. The shaft of the armature S carries a pinion P on its outer end which meshes with the gear or pinion P'. Pinion R, turning with pinion P, meshes with gear or pinion R', which carries a wrist-pin or crank W. This wrist-pin XV gives reciprocating motion to the cutter-bar O by means of a connecting rod or pitman X. The lower cutter-bar O' is preferably secured directly to one of the polepieces B'. The details of the cutter-bars need not differ in any material respect from familiar types used for olipping animals.

From the foregoing description and draw'- ings it will now be seen that the field-magnet and indeed all parts of the electric motor are contained within a cylindrical ontline and form, in fact, a cylindrical handle by which the instrument may be grasped.

I prefer to make the parts in approximately the proportions shown in the drawings, the handle being only about two inches or less in diameter. If the handle is covered by a thin protecting material, as is usual in portable motors, it may still be within two inches in diameter. It will also be seen that the shaft of the motor oorresponds to the axial line of the cylinder and that the gears upon the for- Ward end of the cylinder-that is to say, upon the disk D-form reduction-gearing between the shaft of the motor and the clippers. By means of the present invention I have attained eXtreme simplicity both in construction and operation.

I claim and desire to secure by these Letters Patent as the novel features of my invention, the following:

1. An electrically-operated clipping mechanismv combining 'inter alz'o, a field-magnet presenting a substantially cylinder-like exterior and forming the frame and handle of the mechanism, a field-magnet coil F wound longitudinally of and included within the outlines of such cylinder, one or more non-magnetic transversedisks or supports secured to the said field-magnet, an armature and armature shaft coaxially and concentrically inounted within the said cylinder upon the said supports and cutting mechanism comprising a fixed member carried by and secured to one of the pole-pieces of vthe said magnet, a movable member supported by and sliding upon the fixed member, and Operating connections from the armature-shaft to the movable member, substantially as set forth.

2. An electrically-operated clipping mechanism including in combination the following: a field-magnet core and coil provided with pole-pieces which eXtend laterally from the core and form therewith the frame of the mechanism, an armature supported between the said pole-pieces and at one sideof the said core and coil, two relatively movable cutters, one of which is secured to and supported soiely by one pole-piece of the magnet, and the other of which is operatively connected to the said armature-shaft, substantially as set forth.

3. An electricaHy-operated ciipping mechauisin including in combination the foliowing: a fieid-magnet core and coil provided with pole-pieces which extend lateraliy from the core and form therewith the frame of the inechanism, an armature supported between the said pole-pieces and at one side of the said core and coii, two relatively-lnovable cutters, one of which is fixed across and secured to one pole-piece, and the other of which is mounted to slide upon the first, and a pitman WARREN P. FREEMAN.

Witnesses:

FREDERICK H. DAYIs, I'IAnoLD BINNEY.

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