US1729332A

US1729332A - Clipper blade

Info

Publication number: US1729332A
Application number: US70025A
Authority: US
Inventors: Albert J Dremel
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-11-19
Filing date: 1925-11-19
Publication date: 1929-09-24
Anticipated expiration: 1946-09-24

Description

p 4, 1929. A. J. DREMEL 1,729,332

CLIEVPER BLADE Filed Nov. 19, 1925 w I 2% ova W latented Sept. 24, 1929 ALBERT J'. DREMEL, OF RAGINE, WISCONSIN CLIPPER BLADE Application filed November 19, 1925.

This invention relates to clipper blades.

In hair clippers as heretofore constructed, it is the usual practice to provide guiding lugs on the'movable blade which it within a slot on'the stationary blade. lVear rapidly occurs with devices of this type and such devices are noisy due to the metallic click of the parts as they are reciprocated. This effect is pronounced in all clippers, but is very marked in power driven clippers where the blades execute a large number of strokes per minute and the device generally operates at high speed. Further, when wear occurs, the cutting teeth have somewhat of a rocking motion relative to each other rather than a sliding motion, and the cutting of the hair is very materially interfered with.

This invention is designed to overcome the defects noted above, and objects of such invention are to provide a novel form of clipper blade which is so constructed that the noise is substantially eliminated and also the wear is very markedly reduced.

Further objects are to provide a construction of clipper blade in which the expense has not been unduly increased, and in which the ease of assembly or construction is sub stantially the same as that of previous types of blades.

Embodiments of the invention are shown in the accompanying drawings, in which Figure 1 is a plan view of the movable and stationary blades with a portion of the actuating mechanism. I

Figure 2 is a longitudinal section through the device, and drawn to an enlarged scale, such section being taken on the line 2-2 of Figure 1.

Figure 3 is a transverse section on the line 33 of Figure 1, showing one blade.

Figure 4 illustrates a modified form oi. blade.

Figure 5 is a transverse sectional view on the line 5-5 of Figure 4.

Figure 6 is a sectional View on the line 66 of Figure 4.

Figure 7 is a view of a further form of blade.

Figure 8 is a section on the line 8-8 of Figure 7 Serial No. 70,025.

Figures 1, 2 and 3, showing one form of the invention, will first be described. These figures disclose a stationary blade 1 and a movable blade 2, such blades being provided with the usual cutter teeth.

The stationary blade is provided with a groove 3 extending transversely thereacross and is provided with suitable bearing por tiops upon which the movable blade may s it The movable blade is provided with a relatively shallow slot 4 aligning with the slot 3, and a composition strip or guide 5 is rigidly seated within the slot 4 and is slidably received within the slot 3. This guide is made of any desirable composition material such as fibre, bakelite or other non metallic material.

The movable blade is cutout, as indicated at 6, in Figure 1, and the nonmetallie guide 5 is provided with a pair of upwardly extending spaced ears 7 between which the rounded end 8 of the oscillating lever 9 is positioned.

The guide 5 is held removably in place in any suitable manner as by means of the screws 10. To avoid needless repetition in this case, the guide 5 will be referred to as nonmetallic.

It has been found from actual experience with clippers that the screws frequently be come loose unless other means are provided for anchoring the guide and thus relieving the screws of constant reverse stresses. This is accomplished in the first form of the invention by setting the nonmetallic guide within the groove 4 in the movable clipper blade.

Figures 4 and 5 show a further form of the invention in which the same general arrange ment is employed except that the movable blade 11 is devoid of a groove on its under side. This movable blade, however, is provided with notches 12 adjacentits ends, and the noninetallic strip 13 is provided with upstanding integral lugs 14 at its ends which fit within the notches 12 and thus relieve the screws of the repeatedly ap lied stresses. This strip or guide 12 is provided with up standing ears 15 similar to the ears 7 previously described.

Figures 7 and 8 show a further form of the invention in which the ears for receiving the end of the oscillating lever are omitted and the oscillating lever is allowed to operate directly upon the faces 16 of the movable blade 17.

The nonmetallic strip 18, in this form, is set in a transverse slot 19 formed in the movable blade 1?.

It is obvious that the nonmetallic strip 5 could be carried by the stationary blade, if desired, and could operate in a slot formed in the movable blade. t is not thought, how ever, that it is necessary to illustrate this construction as it is most easily apparent.

It is to be noted particularly that in all terms oi the invention, the noninetallic strip may be readily removed to provide an unobstructed surface tor the blade and thus permit its ready sharpenin From actual experiments conducted with clippers constructed in accordance with this invention, it has been found that the nonmetallic strip 5 outwears the metallic parts, and further that the Wear between the nonmetallic strip and the metallic parts is much less than the wear between the metallic parts formerly provided in these devices.

It has been found further that the clipper is substantially silent in operation and thus the annoying click of the rapidly oscillating parts is eliminated.

Further, due to the elongated bearing provided and due to the nonmetallic nature of the strip, eliminating Wear to a large extent, there is no tendency for rocking of the teeth with consequent interference with their effective cutting. It is intended that the term fibrous be interpreted to cover fibre, bakelite, or, in tact, other materials of this general type. 1

Although the invention has been described in considerable detail, such description is intended as illustrative rather than limiting as the invention may be variously embodied and as the scope of such invention is to be determined as claimed.

1 claim:

1. In a clipper, the combination of a movableand a stationary blade and an oscillating lever having a rounded operating end, Said movable blade having a cut out portion, a nrmmetallic guide carried by said movable blade and having portions positioned Within said out out and notched out and adapted to receive the rounded operating end of'said lever, said stationary blade having a slot for the reception of said guide.

2. In a clipper, the combination of a movable and a stationary blade and an oscillating lever having a. rounded operating end, said movable blade having a cut out portion, a nonmetallic guide carried by said movable blade and having portions positioned within said cut out and notched out and adapted to r u l 1 u receive the rounded operating end 0t said lever, said stationary blade having a slot for the reception of said guide, said movable blade having portions engaging said guide and holding said guide against motion relatively to such blade, and fasteners for holdingsaid guide in contact with said movable blade.

3. In a clipper the combination oi a movable and a stationary blade and an oscillating lever having an operating end, said movable blade having an elongated cut out portion,