US2264101A - Hair thinning clipper - Google Patents

Description

Nov. 25, 1941. B. STREZOFF HAIR THINN INGQCLIPPER Filed Jan. 9, 1941 Vim:

Aiiorngzjs Patented Nov. 25 1941 UNITED STATES ,PATENT OFFICE 1mm riuNmNo CLIPPER Bogoia some, Minneapolis, Minn. I Application January 9, 1941,.Serial No. 373,735

6 Claims.

This invention relates to clipper constructions and more particularly to a clipper construction which is particularly adapted for use with'an lnterchangeable set of blades for thinning hair.

Shears having a straight blade and a toothed blade are now in use. However, these shears have, after a short period of use, become worn due to the fact that the toothed portions of one blade dig into the edge of the straight blade iorming notches therein. This is caused by the shearing action of the two blades which are bowed slightly in order to secure effective cutting throughout the length oi the blades. When the it to prevent said blade from moving about the which is connected to the hub 9 notches become worn in the straight blade they .afiect the cutting efliciency of the shears and frequently cause hairs to be caught in the ably interconnected and which are arranged for simple and quick attachment to and detachment from a. clippers unit.

These and other objects and advantages of the invention will more fully appear from the following description made in connection with the accompanying drawing, wherein like reference characters refer to the same parts throughout the views, and, in which: a v

Fig. 1 is a view partially invertlcal section of Hg. 2 is a plan view with the cover portion I broken away; and

Fig. 3 is a section taken approximately on the line 3-3 of P18. 2.

In the drawing there is shown a relatively sta- I cooperating with other teeth on the-upper blade 4 I stud 8. g r y An upper movable blade I5 is slidably supported upon the lower blade Ill and said upper blade is provided with a pair of guide grooves l6 which receive upwardly extending posts ll on the lower clipper blade -lll. An additional guide member l8 rides in a channel or slot l9, and the member I8 is retained in position by a screw 20 which extends upwardly through the lower blade and into the slot IS in the upper blade. The upper blade i5 is reciprocated' by an arm 2! on the movable handle or operating arm I. V I

The lower clipper blade III is provided with a plurality of outwardly extending teeth 22 which have rounded and somewhat pointed ends, as shown best inFig. 2, and said teeth 22 arecon-v siderably wider and more widely spaced than the teeth of a conventional hair clipper. The teeth 22 are fiat on top and their edges 23 are substantially square to provide shear portions for to be described below. 4

The upper blade l5 has a. plurality of arms ll extending outwardly therefrom parallel to the Y teeth 22 on the lower blade ill, and, as best shownv in Fig. 2, they terminates at the bases of the somewhat pointed ends of the teeth 22.- The ac arms 24 carry a plurality of relatively small hair hair clippers with my invention applied theretoi the notches 26 may also be ed to perform a cutting action if but this is not abso-' tionary handle member 4 having a housing 5 and a plate portion 6 attached thereto. A relatively movable handle or blade operating arm 1 is pivotally connected to the plate G by means of a stud 8 which passes through a hub portion 9 on the movable arm I, through the plate 8 and is adapted to be threaded into a lower stationary clipper blade it. The stud 8 extends through a cover cap II and maybe provided with a spring washer 12 to keep the parts together under compresslon. Y

A pair of pins l2 extend downwardly from the blade teeth 22. It should be noted that the engaging teeth 25 in whose outer ends are formed generally V-shaped notches 26. The small hair engaging teeth 25 when movedwith the blade l5 with which they are attached describe a recti-' 35 linear movement and pass over the upper faces of the lower teeth 22 in closely associated relation thereto so that any hair cut in the notches 26 on the teeth 25 will be sheared oil by the edges 22 of the lower teeth 22. 0f course, the edges 01' lutely necessary, v

when clippers embodying my invention are used they are inserted in the hair with the blades in the position shown in Fig. 2 so that groups 61. hairs will lie in the spaces between the lower upper blade arms 24 and'their relatively small hair engaging teeth 25 overlie certain of the lower plate 6 and into apertures ll in the lower blade blade teeth 22 to permit thehair to possireely between the latter teeth. The operating arm I is then pressed toward the relatively stationary handle or arm' 4 to move the slidable upper blade I! relative to the stationary lowerblade whereupon the hair eng teeth 2I willmovo by each of the notches 26 in said teeth 25. At the end of the stroke the notches 26 will have passed slightly beyond the edges 23 of the lower teeth 22 causing that hair caught in the notches to be sheared oil. The hair which is not caught by the notches 25 in the small teeth 25 will fall between said teeth and, of course, will not be cut. The arms 24 do not cross the space between the lower teeth 22 and for that reason none of the uncut hair is caught between said arms and 'of the clippers by reverse rotation of the stud 8,

and as soon as said stud has been taken out of the lower blade 10, said blade will slip over the pins l3 on the plate 6 and the entire blade unit is removed.

From the foregoing description it will beseen that I have provided an improved clipper construction which permits the attachment of a across the spaces between the lower blade teeth 22 and a small quantity of hair will be caught adjacent the teeth of said first blade, a plurality of relatively small hair engaging teeth extend- :ring from said second gblade arms at an angle to the teeth of said first blade, said relatively small hair engaging teeth being movable past edges of said first blade teeth in closely associated relationship thereto, and means for actuating one of said blades reciprocally relative to the other of said blades.

3. In a hair clipper, a first blade having a plurality of spaced teeth extending outwardly from an edge thereof, a second blade slidable relative ,to said first blade and having relatively narrow arms extending outwardly therefrom adjacent the teeth of said first blade, a plurality of relatively small hair engaging'teeth extending laterally from the arms of said second blade and approximately transversely relative to the teeth of said first blade, said hair engaging teeth having hair receiving notches in their ends, said arms and hair engaging teeth in one position ofsaid blades, overlying the teeth of said first pair of hair thinning blades to clippers and also provides a hair thinning apparatus which does not cause wear of the hair catching teeth on the cooperating cutting. member since there is a It will, of course, be understood that various changes may be made in the form, details, arrangement and proportions of the various parts without departing from the scope of my invention.

What is claimed is: 1. In a hair clipper, a first blade having a blade, and said blades being relatively movable to bring-the notched portions of said hair engaging teeth past an edgeof' a next adjacent tooth of said first blade.

4. In a hair clipper, a first blade having a plurality of spaced teeth extending outwardly from an edge thereof, a second blade slidable relative to said first blade and having a plurality of arms extending outwardly therefrom adjacent the teeth of said first blade, a plurality of relatively small hair engaging teeth extending from said second blade arms generally transversely with respect to the teeth of said first substantially no greater than the width of said first blade, said blades in one position having the arms and hair engaging teeth. of said second blade overlying the teeth of. said first blade, and

' said blades being movable to bring the said plurality of spaced teeth extending'outwardly from an edge thereof, side portions of. said teeth constituting shear members, a second blade slidable relative to said, first blade and having arms extending outwardly therefrom adjacent the teeth of said first blade, said arms, in one position of said second .blade relative to said -first blade, overlying the teeth of said first blade and in another position of said blades relative to each other, said arms lying between teeth of said first blade, said arms having relatively the shearing members of the teeth of said first blade, and means for reciprocating said blades relative to each other.

2. In a hair clipper, a first blade. having'a plurality of spaced teeth extending outwardly from an edge thereof, a second blade slidable relative to said first blade and having relatively .narrow arms extending v outwardly therefrom hair engaging teeth across the spaces between said first blade teeth, and means for reciprocate ing said teeth relativeto each other.

'5. In a hair clipper, a first blade and a second blade connected together for relative sliding movement, cooperative hair thinning elements on said blades operative upon relative movement between said blades, a relatively, movable arm unit, a stud extending through a portion of said arm unit and threaded into one of said blades to draw said blade andarm unit into closeassociation, means connecting said movable arm unit and its connected blade to prevent'movement of said blade about said stud, and a drive connection between said movable arm unit and the other of said blades.

6. In a hair clipper, a pair of relatively movable blades having cooperating hair cutting

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