US1617682A - Hair clipper - Google Patents

Description

Feb. 15, 1927- 5, z. GIBSON HAIR CLIPPER Filed March 27, 1924 INVENTOR SYN/0N Z G/so/v Cil Patented Feb. 15, 1927.

SYMON Z. GIBSON, OF SEATTLE, WASHINGTON.

HAIR CLIPPER.

Application filed March 27, 1924. Serial No. 702,236.

This invention relates to improvements in hair clippers, and more particularly to clippers of the power driven type for ban bers use; it being the object of this invention to improve upon other types of clippers by adding to their e'liicic-ney, safety and compacti'iess, and to so improve the general construction and operating mechanism that noise and vibration. is reduced to a minimum. V

The invention consists in the combination of parts and in the various details of construction as will hereinafter be more fully described and claimed.

In accomplishing the various objects of the invention, l have provided the imf proved details of construction, the preferred forms of which are illustrated in the accompanying drawings, wherein- Figure 1 is a side view ofI hair clippers constructed according to the present invention.

Figure 2 is a view with the cover portion removed.

.Figure 3 is a central, longitudinal sectional view of the clippers showing the driving gearing. t

Figure 4 is a plan view of the device with one half of the cover removed for better illustrating the cutter operating mechanism.

Figure 5 is a transverse section taken on the line 5-5 in Figure 3.

Figure t5 is a view illustrating` an alternative construction for actuating the cutter.

Referring more in detail to the several views of the drawings- 1 designates the base plate of the device whereon there is provided integrally cast bearings 2 and 8 toward its forward end and a bearing 4 at its rearward end. The forward end of the base plate has an upwardly inclined portion 5 and to this is attached the base cutter 6 provided along its forward edge with the usual teeth 7. Overlying the cutter plate G and slidable transversely thereon is the top cutter plate 8 that is held functionally in place by means of two studs 9-9 fixed in the lower cutter to extend upwardly through guide slots 10-15 in the top cutter. The top cutter is provided with teeth 11 along its forward edge that co-operate with the teeth of the lower cutter.

Mounted in the bearings 2 and 3 centrally of and extending longitudinally of the base plate, is a worm shaft 12 adapted to be driven by connection with a flexible shaft 13, the end of which is carried rotatably within a bore 14 in the bearing 4. The end of shaft 13 is provided with a reduced end portion lthat is extendable within a bore in the adjacent end of the worm shaft and it has a stud 16 therein adapted to lock within a slot 17 in the worm shaft to provide a driving connection. The inner end portion of the driving shaft 13 may be detached from the clippers. Normally it is held in place by means of a stud 18 carried on one end of a spring plate 19 that is fixed at its other end to the bearing 4, as shown in Figures :2 and 4. ThisV stud extends through a hole 2O in the bearing and projects within an annular groove 21 in the shaft. lVhen the spring is pulled outwardly, the stud will be unseated from the groove and the shaft thereby released.

Mounted transversely beneath the worm 12 with its opposite ends rotatably supported in spaced plates and 26, that join the bearings i2 and 3, is a short shaft 27 on which is keyed a worm gear 28 adapted to bedriven by the worm 12. The shaft 27 is provided at its opposite ends with pins 29 and 30, (see Figure 5) that extend eccentri cally from the shaft and at opposite sides of the axial line, and on these pins are bearing blocks 31 adaptedfor vertical, slidable movement in slots 32 formed in plates 33 and 34 that are disposed adjacent opposite side faces of the forward bearings.

The plates 33 and 34 are provided at their rearward ends with longitudinally extending slots 35 and screws 36 on which the plates may slide, are extended through these and into the bearing 3. At their forward ends the plates are pivotally attached to the opposite ends of a. rocker plate 37 that seats upon an upwardly facing shoulder 38 formed integral with the bearing 2 and is pivoted centrally between its ends on a bolt 39 that is xed at its lower end in the bearing. The plate 37 has a forwardly projecting portion forming a head 40 that is pivoted in a slot 41 in the top cutter plate 8 and through which the cutter is reciprocated.

The main portion of the clippers is inclosed by a removable cover portion 46 pro vided at opposite sides with depending lugs 47 adapted to register within notches 48 in the base plate and also is provided interiorly with bosses 49 into which screws 50 Lil) that are extended upwardly through the base plate, may be threaded to hold the cover in place. rlhe forward end portion of the cover 16 is cut away to provide access for oiling to the cutter 8 and its operatinftg plate 37 and to the gears and the openingthus provided is norn'ially covered by nieans of a tensioning plate 52 that pivots at its upper end ou the forward edge of the body cover, as at in Figure 3, and at its lower end has a two point contact with the cutter plate 8. The bolt 39 extends through an openin` inthe plate 52 and a nut 55 is threaded onto .its end whereby the pressure of the tension plate against the cutter may be regulated. A coiled spring 58 is mounted about the bolt $39 and bears against the under side of the tensioning' plate and against the back-turned end portion of the cutter operating plate 37.

In Figure 6, l have illustrated an alternative construction in which a link 65 is interposed between the cutter plate S and plate 37. This link is centrally pivoted, as at 6G, and has pivotal connection at its ends with the cutter S and plate 37. lt provides for a lengthening' of the handle of the cutter or a farther spacing apart of the cutters and bearing 2.

`With the device so constructed, its` opera-v tion is as follows:

The flexible shaft 13 is driven by any suitable motor, preferably an electric motor and by its connection, at 16, operates the worin sha-ft 12 and rotates ,gear 28 and .shaft 2 7.

Rotation of shaft 27, due to its connection through the eccentric pins 29 and 30, and blocks 31, slidable in slots 32 causes reciprocal movement, in opposite directions, of the two plates 33-34 and this effects rocking movement of plate 37 on bolt 39 and a consequent reciprocal movement of the cutter 8 on .stationary cutter 6. rllhe teeth of the two cutters thereby cooperate to cut the hair to which they are applied.

lVhile l have shown the device operated through the shaft 13, itis intended also to provide for mounting a small electric niotor within the handle and providing adirect driving connection between it and the shaft 12.

lt is also to ,be understood that various details of construction could be altered without departing from the spirit of the invention and for this reason l do not wish to liinit the device only to the details shown.

Having thus described my invention, what l claim as new therein and desire to secure by Lett-ers Patent, is:

In a hair clipping device, a driven shaft, al worin sha-ft adapted to be operated by the driven shaft, a gear supporting shaft mounted transversely with respect to the worm shaft, a keyed on said shaft in mesh with the worin; said I`O ear suppi'irtin,JJ` shaft having` pins extending` from its opposite ends eccentrically thereof and at opposite sides of the axial line of the shaft, a centrally pivoted rocker plate havinga forwardly extended head portion` a pair of .slidably supported plates having ends pivotally connected with the opposite ends of the rocker plate and having` slots therein located transversely with respect to the direction of movement of the plates and bearing* blocks slide-ble in said slots and mounted on the said eccentric pins at the ends of the ,Q'ear shaft.

Signed at Seattle, King' County, lVashington, this 14th day of March, 19241;

SYMON Z. GIBSON.

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