US1774046A - Clipper-blade construction - Google Patents

Description

Aug. 2s, 193,0.` L. L WAHL 1,774,046

CLIPPER BLADE CONSTRUCTION Filed Sept. 16. 1929 Patented Aug. 26, 1930 UNITED STATES PATENT OFFICE LEO J'. WAHL, 0F STERLING, ILLINOIS, ASSIGNOR T0 WAHL CLIPPER CORPORATION,

' OF STERLING?, ILLINOIS, A CORPORATION 0F ILLINOIS CLIPPER-BLADE CONSTRUCTION Application filed September 16, 1929. Serial No. 392,886.

My invention relates to a stationarybladev construction for 'hair clippers and has for its principal object the provision of means whereby a single blade may be readily adjustable to give varying thicknesses of cut without the' necessity of changing from one entire clipperto another or of applying attachments to the clipper.

I will describe one form which my invention may taken by reference to the accompanying drawings wherein- Fig. 1 isa section taken along the top of the movable clipper blade; i

Fig. 2 is a side view partly in section of aclipper equipped with my improved stationary blade construction; and

ig. 3 is a section on the line 3-3 of Fig. 2.

Referring now in detail to the drawings, I show at 5 the front end of a clipper such as that shown in my Patent No. 1,487,489. The driving member 6 .cooperates with the movable blade 7 to give a reciprocating action thereto, so vthat the teeth 8 of this blade will in passing over the teeth 9 of the stationary bladclO serve to cut hair. The operation of this" clipper is old and `well known and, it is believed, need not be further-described.

Now in order to obtain varying closeness of cutting with the clipper, it has been proposed to use different stationary blades such as 10 which are of different thicknesses, but thisl necessitates in the removal and replacement of the stationary blade each time an adjustment is desired, or the provision of a number of clippers each having stationary blades of different thicknesses. It has also been proposed to use various attachments for the stationary blade whereby to change its thickness, but these attachments are, of course, limited to step by step increasing or decreasing in the size of a stationary blade and are not very satisfactory for some purposes. p

With the present device I accomplish the result of changing the closeness of the cut by adjusting t-he position of the stationary blade 10 relative to the moving blade '7 so as to have the teeth 9 thereof projecting more by mere'turning of the adjustment screw 18.

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or less forwardly with respect tothe movable blade.

To accomplish this result, I provide a base plate 11 which is secured as by means of the screws 12 to the frame of the clipper and which is cut away from the front rearwardly to form a guiding groove as shown at 13, this guiding groove preferably being slightly greater in vdepth than the thickness of the stationary blade 10. As shown clearly in Fig. 3, one side wall 14 of the guiding groove 13' extends at substantially right angles to the bottom of the groove while the opposite wall 15 is sloped with respect to the bottom of the l ogroove 13, so that the 'pressure of the mov-y able blade 7 tends to urge the stationar blade 10 into the groove 13 witha wedging t that will prevent its chattering or coming loose in a lateral. direction. The adjustable stationary blade 10 has secured to the rear end thereof an adjusting screw 16 ywhich screw is preferably rotatably held to the end of the blade 10 and is screw-threaded in the base plate 11. An apertured plate as shown at 17 may be utilized asthe means for holding the screw-threaded member 16 to the stationary blade 10. A knurled head 18 is provided for turning the screw 16 to adjust the blade 10 toward and away fromthe shoulder 19 of the base member 11. j

With this mechanism just described, stationary blade 10. may be adjusted to extend the teeth 9 rthereof a greater or less distance forwardly of the teeth 8 of the movable blade 7, and, in this manner owing to the tapering of the teeth 9 as shown at 20, therelative closeness of the cutting of the clipper may be varied through a considerable range From the` above description, it is thought ,90

that the construction and operation of this device will be clear to those skilled in' this art and theadvantages thereof readily ap- Itis also obvious that various modifications may be made from the exactvstructure shown, and described withoutv departing from the sccpe 'of the invention.

avingthus described Amy invention, what we I claim as new and desire to ters Patent is: i

1. A stationary blade construction for clipsecure by Letnpers comprising a supporting base fixed on the clipper frame, a normall stationary blade carr'ed on said base an cooperating with the ovable clipper blade,` and vmeans for adjusting said stationaryblade to vary its projectiom beyond the point of the movable blade, said base having a groove therein for receiving and guiding said stationary blade.

2. A stationary blade construction for clip` pers comprising a supporting base fixed on the clipper frame, al norma f top thereof` decreasin in width toward its portion wedged into said movable blade,-

' the clipper frame,

bottom, and said stationary, blade-having a sure of the movable blade thereon.

3. A stationary blade construction for clippers comprising a supporting base fixed on'y a normally stationary blade carried-on said base and :cooperatingwith the movablel clipper blade, andA means for adjusting said stationary bladeto vary ary blade.

In witness whereof I hereunto subscribe my name'this 28th day of Au st, A. D. 1929.

LE .J. WAHL.

groove by the'presr itsprojection beyond the point of the movableblade, said meansfinclu'ding. an adjusting/ screw carried by said base, and abutting thestationary blade, said base-*havingfa groove therein `for receiving and guiding 'said sta- 1 tional-y blade. l'

et..A A stationary blade construction for clippers comprising means forming a ide for the stationary blade whereby it may moved i to vary its projection beyond the point of the a .stationary blade having means fitting said guide means, said blade andv guide forming means having cooperating inclined bearing surfaces, and means yieldingly urging said bearing surfaces to- 5. In a clipper, a stationary blade, 'mounting means on which said blade vis movable to vary its projection beyond the point ofthe movable blade, inclined bearing surfaces guiding said blade in its movement,r andmeans yieldingly pressing said bearing surfaces together whereby to prevent vibrations of said stationary blade. 6. In a clipper,a stationary blade, mountmg means on whlch said blade is movable tov vary itsprojection beyond the point of the movable blade, inclined bearing surfaces guiding said blade in its lmovement, and means yieldingly pressing said bearing surfaces together whereby to prevent vibrationsv of said stationary blade, said surfaces being on the opposite side of the stationary blade from the movable blade. Y

7. A stationary blade construction for clip-

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