US393450A - Hair-clipper - Google Patents

Description

(No Model.) K" PRIEST.

HAIR GLIPPBR. 180.393,45). Patented Not/ZZ?, 1888..

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' UNITED STATES PATENT CEETCE.

JOSEPH PRIEST, OF NASHUA, NEV HAMPSHIRE.

' HAI R-CLIPPER.

SPECIFICATION forming part of Letters Patent No. 393,450, dated November 27, 1888.

Application tiled June 1983. Serial No. 278.527. (No model.)

To @ZZ whom, it may concern:

Be it known that I, JosEPH K. PRIEST, a citizen of the United States, residing at Nashua, in the county of Hillsborough and State of New Hampshire, have invented certain new and useful Improvements in Hair-Clippers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to makeand use the same.

My invention consists of certain novel constructions, arrangements, and combinations of parts in a hairclipper, as will be hereinafter described and specifically claimed, whereby certain imperfections in the same are remedied andagreatly-improvedimplementisproduced.

In the accompanying drawings, Figure l is a top View of my hair-clipper complete. Fig. 2 is a bottom view of a portion of the clipper, the bottom cutter-plate being removed in order to expose the construction of parts above said plate. Fig. 3 is a section in the line xx, and Fig. 4t a section in the line y y, of Fig. l. Fig. 5 is a section in the line z z of Fig. 2.

The letter A in the drawings represents the stationary handle or arm of my hairclipper; B, the oscillating handle or arm; C, the housing; D, the center pivot-bolt; and E F, upper and under cutter-plates.

The stationary handle or arm A and housing C are formed in one piece and provided with an interior tubular center bearing, c, which is cast with the housing and into which a tubular fulcrum-bcaring, VI), of the handle or arm B is fitted, said bearing b being cast integral with the handle or arm B. rlhe lower portion o'f the bearing c is provided with a flanged tubular end piece, c,which is screwed thereon or otherwise attached to it, and by its iiange c2 holds up'a spring, b',which is around the center bearing, c, and prevents it from slipping down and bearing upon the handle or arm B. The upper end portion, b", of the spring ii is located in the housing C at c3, as shown in Fig. 4, and the lower end portion, bi", of said spring is passed through the swivelhead b",at the end of a set-screw,b,in the arm B, as shown in Figs. 1 and 2, by means of which the tension of the spring b may be increased or decreased at pleasure, to suit the convenience of the operator. The handle or arm Bis provided with a head, b4, which is fitted into a slot, c, of the cutter E, and thereby communicates motion to the same.

The oscillatory motion of the head b* causes a reciprocating motion of the cutter-plate E by means of two lugs, 0*, formed ou the lower surface of the housing G and placed and fitted into straight guiding slots e of the cutter-plate E. The cutterplate Eis clamped in position between the lower front surface, c5, of the housing C and the upper surface ofthe cutter-plate F, which latter is drawn up by means of the center pivot-bolt, D, and nut d, and thus the serrated cutting portions of both cutter-plates are kept in Contact, which contact is relieved of the rigidity which the bolt and nut alone would cause by an interposed spring, d', which is inserted into atubular housing, d2, of the nut d, so as to encircle the pivot-bolt D very loosely. This spring exerts its tension vertically against the housing C and nut d, and thus draws the center pivot-bolt, D, and cutter-plate F upward with a yielding force, which keeps the said parts in working position, and yet permits them to yield to any undue resistance offered to the cutterplates. The nut d is kept in line with the center pivot-bolt, D, by means of a circular projection or flange, c, of the housing C,whieh fits around the lower portion of the nut. The spring d is prevented from turning by means of a vertical end portion, d, thereof,which is insert-ed in a socket, cl, of the housing. The cutter-plate Fis held steady by means of two lugs or projections, es, on the lower surface of the housing, which projections are entered snugly into two holes, f, of the cutter-plate F.

From the drawings, Figs. 1,2, 4, and 5, it will be seen that a vertical balancing heel-lug, c, is formed at the center of the rear portion of the housing C, and that said lug bears centrally on the lower cutter-plate, F, and keeps said housing out of contact with said plates E and F, except where it bears along its entire marginal under front edge surface at ci upon the said upper cutterplate. By this construction it will be seen that the pressure of the narrow bearingsurlhce at ci upon the reciprocating cutter-plate Eis equally divided from one end to the other, this being due to the fact that a triangular bearing-contact is secured between the lower cutter-plate, F, and the IOO housing C, the two end portions of the narrow front bearing-surface, c5, of the reciprocating cutter and the lug t9 insuring such contact when a central pressure is applied by means of the screw, said pressure being equally distributed and sustained at all three points, and the pressure in this ease being applied against the spring d a capability of yielding to undue friction is afforded.

It will be seen that the spring d', by being prevented from moving around in the housing d'l of the nut d,will not become loose when the hair-clipper is used; and by having lugs c4, c5, and c formed With and on the housing C the mechanism is rendered steady, reliable, and durable, without requiring frequent repair; whereas with pins inserted into the housing, as heretofore, the moving parts and pins rapidly become loose and render the instrument inoperative until repaired. In known con structions the spring I/ has been found to crowd downward upon the handle orarni B, and thereby cause the fnlcrum portion of said arm or handle to cramp the lower cutter-plate, F, and thus subject it to undue wear while moving against the hardened cutter plate E below and the spring b above. In my present construction the spring b is held away from the said fulcrum portion by the flange c2 of the end piece, c', and this imperfection remedied.

It is obvious that the socket c7, as illustrated by dotted lines, may be in nut d, instead of in the housing, and secure the saine result.

'Vhat I claim isl. The hair-clipper comprising a fixedlyheld spring, d', handle A, housing C, having tubular bearing c. handle B, having tubular i'ulcrum bearing b, cutter plates E F, center screwthreaded pivot-bolt, D, and nut d, in

closing and binding vertically upon said spring d', substantially as described.

2. The hair-clipper comprising the handle A, housing G, havingr tubular bearing c and lug c4 cast with it, cutter-plate E, having tubular fulcrum-bearing b and slots e', cutter-plate F. center screw-threaded pivot-bolt,D, springs b' d', and nut d, substantially as described.

t 3. The hair-clipper comprising handle A, having housing C, with tubular bearing c and steadying-lugs es east with it, the cutter-plate F, having guide-holes f for the lugs, the cutter-plate E, having tubular fulerum-bearing b, central screw-threaded pivot-bolt, D, springs b' d', and nut d, substantially as described.

4. The hair-clipper comprising handle A, having housing C, with central rear balancinglug, c", lugs c, projecting pins c, transverse front edge bearing, c5, the cutter plates E F, having, respectively, slots e' and holesf, center pivot-bolt, D, springs b d', and nut d, substantially as and for the purpose described.

5. The hair-clipper comprising the handle A, having housing C, with tubular bearing c, the spring b. secured by its end c3 to housing C, handle B, having tubular fnlerum-bearing b, and set-screw b, having swivel-head b5, with lower end, b, ofthe spring passed through it, substantially as described.

6. The housing C, having tubular bearing c and flanged end piece, c', in combination with spring b', set-screw b, and handle or arm B, substantially as and for the purpose set forth.

In testimony whereofI hereunto affix my signature in presence of two witnesses.

JOSEPH K. PRIEST.

Vitnesscs:

R. T. SMITH, ANNETTE M. Mom/ros.

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