US1528745A - Hair clipper - Google Patents

Description

Mar. 3, 1925.

A. M. LUTES HAIR CLIPPER Filed Feb. 5, 1922 2 Sheets-Shoot 1 11 v VI-TNTOR 1/) /'/'t 10225.

Mar. 3, 1925. 1,528,745

A. M. LUTES HAIR CLIPPER Filed Feb, 3, 1922 2 Sheets-Sheet 2 VII/ 111 1 'A Y'TORNE r Patented Mar. 3, 1925.

UNITED STATES ARTHUR M. LUTES, or KANSAS CITY, MIssoURI.

'7 HAIR CLIPPER.

Application filed February 3, 1922.

To all 107110-222 it may concern:

Be it known that I, ARTHUR M. LUTES,

a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Hair Cli pers; and I do declare the following to e afull, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

This invention relates to mechanically operated hair clippers and particularly to the type of hair clippers in which a reciprocatory cutter bar is actuated by a shaft, preferably a flexible shaft, from a prime mover or motor.

The invention contemplates the provision of means for efficiently reciprocating the reciprocatory cutter bar with a minimum of lost motion so that the liability of noise will be reduced to a minimum and it is also the purpose of the invention to provide a hair clipper mechanism which may be conveniently assembled and which will be inexpensive to manufacture, the parts being so arranged that they may be readily accessible for the purpose of inspection or repairs.

The invention consists in certain novel arrangements of parts and combinations of parts, all of which will be specifically referred to hereinafter, reference being had to the accompanying drawings, in which Fig. 1 is a perspective view of a hair clipper constructed in accordance with my invention.

Fig. 2 is a vertical, longitudinal, sectional view through the hair clipper, part of the mechanism being shown in elevation and part in section. v

Fig. 3 is a cross sectional view on the line 3 -3 of Fig. 2.-

Fig. t is across sectional view on the line l--4 of Fig. 2.

Fig. 5 is a top plan view of the hair clip: per showing the worm box cover and the guard housing removed.

Fi 6 is an enlarged detail, perspei tivo a i View of the guard hous ng,

Serial No. 533,814.

Fig. 7 is a detail perspective view of a tension spring co-operating with the guard erably consists of a casting 1 having handles 2 and 3 and outstanding fingers at and 5. The casting is provided intermediate its ends with cross webs 6 and 7 to provide a worm gear casing adapted to be closed by a removable cover plate 8. Extending forwardly in front of the web 6 is an angular bracket 9, which supports the stationary cutter bar 10, provided with the usual teeth 11.

Spaced rearwar'dly from the web 7 isa transverse bearing 12', having a collar 13, through which the end of the. drive shaft projects for engaging the worm shaft 14. The drive shaft 15,- which may be a flexible shaft, is provided with a sleeve 16 having a circumferential groove 17 therein adapted to be engaged by a spring-pressed pin 18 so that the sleeve will not be pulled from the hearing or socket collar 13, thereby insuring its connection with the worm shaft 14:. The worm shaft projects through a bearing 19, which is screwed in the web 7 and has its free end in a bearing 20 adjacent to the web 6. The worm shaft is provided with a worm 21, which meshes with a worm gear 22, mounted on the shaft 23. The shaft 23 passes through a wear blate 24 in a countersunk recess 25 in the bottom 26 of the gear case and loosely mounted on the shaft 23' is the gear 22, the bottom of which may rotate on the wear plate 2a, which can be removed when it has worn sufficiently to justify a removal.

The bottom of the gear case constitutes the bearing for the shaft 23 and the upper end .ofthe shaft-23 is supported in the cover plate 8 and in actual practice I prefer to offset or provide a flat face 27 on the restricted end 28 of the shaft 23 which enters the plate 8 so that the shaft will not turn. The lower restricted end 29 of the shaft 23 is also angular in cross section, whereit enters the bottom plate 26. The cover plate 8 can be fastened in place by screws 30.

By reference to Fig. 9 it will be observed that integral with the worm gear 22 is a cam or eccentric 31, on which is'mounted a cam link 32, having an opening 33 fitting over the cam 31 and provided with a hooked end 34 which engages a head 35 of a vibrating lever 36. The vibrating lever is provided with a hub or sleeve 37, located inter mediate its ends and loosely litting'over a'spindle 38, which is shown as a stud bolt having its respective ends 39 and 40 threaded. The lower end '39 of the bolt is threaded int-o'the casting and the upper end projects above the casting to receive a compression nut to be referred to hereinafter.

Thespindle or bolt is also shown as pass ing through a perforate projection 41 on the cover plate 8. .The hub or sleeve 37 may oscillate about the axis of'the spindle when' movement is imparted to it through .the medium of the cam 31 and the link 32.

The forward end of the lever engages a notched portion 42on the laterally reciproeatory cutter bar 43. The cutter bar 43 is provided with teeth 44, which co-operate "forward end of the operating lever and for the movable cutter-bar 43. The housing plate also constitutes a guide and tension plate, the forward edge of which is provicled with notches or recesses and 51 which receive the lugs 47 and 48 so that the forward end of the plate49 will be properly positioned with respect to the cutter bar 43. Theforward edge 52 of theplate 49 is provided with removable projections or inserts 53 and 54, which are adapted to slightly bear upon the movable cutter bar so as to hold it in sliding contact with the stationary cutter bar. The inserts are of hard material and can be renewed when desired.

.The degree of pressure of the housing plate and the tension member 49 will be de termined by the compression nut 55 on the threaded end 40 of the stud bolt or spindle 48. The nut 55. is provided with a restricted portion 56, which is adapted to pass through the opening 57 in the plate 49 and on the end thereof is a further restricted portion 56, which passes through the plate 58 and is peened over so that it can turn with respect to the plate 58 but so that the plate 58, the nut and the plate 49 will all be secured together.

The end of the restricted portion 56 of the nut 55 is adapted to bear against the spring tension plate 58, having forwardly projecting fingers 59 and 60 which are provided with upturned ends 61 and 62 to bear against the inner face of the offset portions 51 and 52.

The rear edge of the plate 49 is provided with a depending flange 63 which rests upon the upper face of the plate 8 so that there is a space between the body portion of the plate 58 and the plate 8. Therefore, when the nut 55 is screwed on the end 40, there will be a tendency to flex the portion of the plate 58 about the hole 64, through which the spindle projects, and apply pressure on the plate 49 to cause it to bear against the reciprocatory cutter bar 43 and hold it in proper operating position. Therefore, when the lever 36 oscillates or vibrates, the reciprocatory cutter bar will move backand forth because the end of the lever engages the notched portion 42 and since the lugs or projections 47 and 48 project through the slots 45 and 46, thereciprocatory cutter bar will be maintained in proper rectilineal alignment during its reciprocation and in view of the fact that the necessary adjustment may be provided'for the tension plate 49, the sidewise. movement of the cutter bar 43 will be eliminated although the tension plate will not bear upon the cutter bar sufficiently to hinder its movement. The tension plate 49 not only'functions as such but also constitutes .a housing and it is provided with side flanges or walls 65 and 66.

The arrangement above described constitutes an easy assembly, the parts being adapted to be conveniently dropped into place, connected without special jigs or assembling tools and it is one of the purposes of the invention to so design. the cutter that it may be inexpensively manufactured because the parts can be tlSSGll'lblGCl. by unskilled persons and whenever it is desirable to have access to the mechanism for. the purpose of inspection or repairs, this can be accomplished without the employment of special tools because the nut 55 can be unscrewed and the screws 30 removed from the plate 8; after the plate 8 has been taken off, the cutter bar and the vibratory lever may be readily removed; the link 32 can be taken off the cam, and the cam will drop out by inverting the device. It is to be understood, of course, that the spindle or shaft 38 is in a slot in the front wall of the cam shaft box so that the forward end of the lever may project through it.

lll)

By reference to Fig. 12 it will be observed that the sleeve or tube 37 is preferably made separate from the lever 36 and that its end is peened over so that the lever and sleeve can be secured together. The whole device, as shown in Fig. 12, is then preferably hard ened by a cyanide process and preferably the end of the lever 36 which engages with the notch in the movable cutter bar has its end 36, slightly rounded to permit the end to work freely in the notch 42 during the reciprocation of the cutter bar.

It will be apparent from the foregoing that a mechanism constructed in accordance with my invention may be inexpensively assembled, and that the parts are simple, durable and readily co-operate to produce an easy, smooth running device of the class above referred to.

What I claim and desire to secure by Letters-Patent is:

l. A hair clipper comprising a frame having a worm gear box therein, a worm disposed in the box longitudinally of the frame, a cam carrying worm gear meshing with the worm atone side thereof, a longitudinal vibratory lever having a headed rear end projecting into the box and located above and extending along the worm, a transversely disposed link having a perforated outer portion fitting over the cam, said link having a. hooked inner end extending over the worm and receiving the head of the lever, a rigid 'cutter bar on the forward end of the frame, and a sliding cutter bar cooperating there with and receiving motion from the forward end of the lever.

2. A hair clipper comprising a frame having a rigid cutter bar secured to the front end thereof, a worm gear box in rear of the rigid cutter bar, a worm located Within the box and extending longitudinally of the frame, a worm gear meshing with the worm at one side through a removable wear plate beneath the worm gear, a shaft extending through the worm gear and plate and about which the worm gear rotates, a cam on the upper end of the worm gear, a longitudinal vibratory lever mounted intermediate of its ends for swinging movement and having a rear portion projecting into the gear box and arranged above and extending longitudinally of the worm, the rear end of the lever being provided with a head, a reciprocatory cutter bar operated by the forward end of the lever, and a transverse link aranged within the gear box and connected at its outer end to the cam and at its inner end to the head of the lever.

3. A hair clipper comprising a frame having a rigid cutter bar at its forward end, a movable cutter bar cooperating with the rigid cutter bar. and driving mechanism for the movable cutter bar comprising a central longitudinally disposed worm, a worm gear located at one side of the worm and meshing with the same, a cam carried by the upper end of the worm gear, a central longitudinally disposed lever pivoted intermediate of its ends and having its forward end connected with and adapted to actuate the movable cutter bar, the rear portion of the lever being located above and extending longitudinally of the worm and having a terminal head and a transversely disposed connecting link provided at its inner and outer ends with bearings receiving respectively the head of the lever and the cam of the worm wheel, the said link being disposed substantially at right angles to the lever and the worm.

4. A hair clipper comprising a frame having a rigid cutter bar at its forward end, a spindle carried by the frame, a vibratory lever having a sleeve extending downwardly from its intermediate portion and mounted on the spindle, a movable cutter bar cooperating with. the rigid cutter bar and actuated by the forward end of the lever, a cover plate having an opening through which the upper end of the spindle projects, a spring plate cooperating with the cover plate and bearing against the same, a nut threaded on the upper end of the spindle and bearing against the spring plate, a centrally arranged worm located beneath the rear end of the lever, and means for transmitting motion from the worm to the lever.

5. A hair clipper comprising a frame having a rigid cutter bar at its forward end, a 1 movable cutter bar mounted thereon, a lever pivoted intermediate its ends and engaging the movable cutter bar, means for vibrating the lever to impart movement to the cutter bar, a vertical spindle on which the lever is mounted, the upper end of the spindle projecting through the lever, a tension plate enclosing the forward plate of the lever and bearing against the movable cutter bar and having spaced portions, a spring located beneath the tension plate and supported at its rear end and bearing at its front end against the said spaced portion of the tension plate, and a nut on the spindle for varying the tension of the spring plate to vary the effective contact of the tension plate with respect to the movable cutter bar.

6. A hair clipper comprising a frame having a gear box, a cover plate for the gear box, a rigid cutter bar on the front of the frame a movable cutter bar co-operating therewith, a lever pivoted intermediate its ends and having its forward end engaging the movable cutter bar and its rear end projecting Within the gear box and operatively connected with the gear mechanism therein,

a tension plate bearing against the movable cutter bar, a spring plate provided at its forward end with spaced projecting port-ions bearing against the tension plate and its rear end resting upon the cover plate of the gear box, a bolt projecting through the spring plate and thetensionplate, and a nut on the bolt bearing against the springplate to vary the tension thereof to in turn vary the tension of the tension plate against the movable cutter bar.

7. A hair clipper comprising a frame having a rigid cutter bar at its forward end, a movable cutter bar cooperating with the rigid cutter bar, and driving mechanism for the movable cutter bar comprising a central longitudinally disposed worm, a worm gear located at one side of the worm and meshing with the same, an eccentric carried by the upper end of the worm gear, a central longitudinally disposed lever pivot-ed intermediate of-its ends and having its forward end connected with and adapted to actuate the movable cutter bar the rear portion of the lever being located above and extending longitudinally of the worm and having a terminal head and a transversely disposed connecting link provided at its inner and outer ends with bearings receiving respectively the head of the lever and the cam of the worm wheel, the said link being disposed substantially at right angles to the lever and worm.

In testimony whereof I affix my signature.

ARTHUR M. LUTES.

Images