US1682289A - Hair-cutting device - Google Patents

Description

" and Figs. 3 and 4.-

slot 27, the rear end of Patented Aug. 28, 1928.

UNITED STATES PAUL KVIST, F SEATTLE, XVASHINGTO N HAIR-CUTTING nnvrcnl Application filed 0ctober7, 1926. Serial No. 139,994.

The object out my invention is to provide an improved device for cutting the human hair; which device is so constructed ant arranged that pressure appliedthereto by the operators hand will impart vibratory cutting movement to the bladeelement of the device. r

The invention consists in the novel construction, adaptation and combination of parts hereinafter described and claimed.

In the accompanying drawing,+ I v Figure 1 is a side elevation of a hair cutter illustrating one embodiment of my invention; Fig. 2 is a top edge view thereof; are detail sectional views on lines 33 and 4 l of Fig. 1. Fig. 5 is a side-elevation of a hair cutter illustrating another embodiment of my invention; Fig. 6 is a top edge view thereof; Fig. 7 1s a view similar to Fig. '6 with the parts shown in relatively open positions; and Figs. 8, 9, and are detail sectional views on lines 8-8, 9-9 and l0-1Ofo:tF1g. 5. Fig. 11 is aside elevation illustrating a casing in which the cutters may be sheathed when not in use.

The cutter shown in Figs. 1 to 4 inclusive, is constructed of a thin bar of steel to provide at one end thereof a blade element and at its other end a handle element 21.

The blades upper edge 22 which constitutes the cutting edge of the device is sharp ened and is inclined with respect to the longitudinal axis of the device. The cutting edge 22 extends from the outer extremity of the blade to an opening 23 which is coextensive with an arcuate slot 24 which separates the rear portion of the blade from the handle. 25 represents a slot extending length-wise of the bar below the blade and extending from in proximity of: the outer end of the latter in a curve, as shown in.

Fig. 1, to below the bot-tom of theslot into the handle 21 and thence upwardly in a curve as at 26 to the rear of the slot 24:.

Extending rearwardly from the slot 26 medially of the width of the handleand to within proximity of its rear extremity 1s a this slot 27 extending upwardly as at 28. As shown in Fig. 3, the slot 27 is formed to provide in transverse section a tapering upper edge 28 of the portion 21 of the handle below the slot 27 and a reentrant groove 29 in the lower edge of the portion 21 of the handle above the groove. Theprovision of the slots 24, 25, and 26, affords curved ribs 30 and 31 which serve as springs to resiliently connect the blade 20 from its front and rear end, respectively, with the front end of the handle. Moreover, the rib 31 connects the lower rear end of the blade with the upper portion 21 ot the handle and the rib 30 connects the front end of the blade with the lower portion 21 of the handle; hence, by moving the forward ends of the'upper andlower portions otthe handle toward and from each other, a Vertical vibratory moven'ient, is transmitted through the said ribs to the cutter blade.

The pressureto contract the forward end of the handle parts toward each other is accomplished by means of the operators hand which iolds the device; his other hand hein employed to hold a comb, as denotedby dottedlines 33 in Fig. 1, by which the hair is-brought upinto cutting relation with resaectto the cutting blade of the device, said comb cooperating with. the device by providing back support for the hair against which the blade engages in its vibratory cutting action.

The other illustrated form of the invention is shown in Figs. 6 to 10 inclusive,

comprises a cutting blade 35 with anin-' clined cutting edge 86 and having a rearwardly directed stem 87 which is mounted for movement between the lower and upper elements 38 and 38 of a. handle.

The rear end oi the blade stem is connected to one of the handle elements as by means of a resilient rib or spring 39. The rear ends of said handleelements are connected together by means of a resilient rib or spring 38 The lower handle-element 38 extends below the blade 35 and is formed with a groove 40 which serves as a guide way for the blade.

In proximity to the blade, the upper ele- I ment 38 0f thehandle is bifurcated to provide a slot 41 (Fig. 6) to receive and guide the stem, and at each side of the slot, the branches at opposite sides of the stem being extended downwardly in the form or" ears 42 whose lower extremities are welded to the lower element 38 or engaged within grooves, such as 43 provided in such handle element. The cars 42 serve as side guides for the blade and its stem, and guides supplementary, thereto into the nature of, lugs 44 are provided upon the handle near the spring 39 to obviate lateral displacement of the rear end of the stem with respect to the handle. 45 represents a relatively thin extension of the blade-stein which is found to be advantageous for regulating the vibratory iii'iovement of the stem.

46 are recesses provided in each side of the respective handle elements to accommodate the thumb and a finger of the operators hand whereby the stem. is pushed in opposite lateral directions to accomplish bowing movements of the stem between the ears i2 and the lug 4A: whereby the effective length ot the stem is varied to impart reciprocatory movement to the blade longitucinally ot the device. In use acomb as denoted by dotted lines 47 in Fig. 6 is utilized to hold the hair while being cut with shearing Sll'Gh-TBS ot the blade when the latteris actuated by thumb and finger pressure applied to the stem 37 as above described. The device in either of its forms (F 1 and is advantageously constructed of a single piece of steel which is treated or prepared to provide sufficient resiliency to afford the vibratory movement of the blade.

In practice, the parts 30 and 31 of the Fig. 1 species and the part 39 of the Fig. 6 species constitutes springs through the action of which the vibratory movement of the respective blades are attained.

In Fig. 11 I show in elevation a casing 50 which issewed as at 51 about its margin as by thread, and is provided in one or both sides with apertures such as 52 opening into a pocket or pockets in which one or more of the devices may be sheathed.

The construction and manner of using the invention will, it is thought, be understood from the foregoing description.

lVl at I claim is v 1. A hair cutting device comprising a contractile handle, a blade disposed in the plane of the handle, and spring elements connecting both ends of the blade with one end of the handle.

2. A hair cutting device comprising a handle having upper and lower elements connected together at one end of the handle, a blade disposed in the plane of the handle, and spring devices connecting the opposite ends of the blade with the upper and lower elements respectively of said handle.

3. A hair cutting device consisting of a handle formed of two substantially parallel portions connected together at one end of the handle, a blade, and resilient connection between the handle and the blade, said resilient connection permitting vibratory movement of the blade with respect to the handle and in the plane of the latter.

4:. A. hair cutting device formed of a single piece of resilient material, comprising a cutting blade at one end and a handle at the opposite end, the handle and blade end of the device having recesses cut therein, whereby upon pressure being applied to opposite sides of the handle theblade will be vibrated.

Signed at Seattle, Washington, this 2nd day of October 1926. r

, PAUL KVIST.

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