US2104929A - Shaving device - Google Patents

Description

Jan. 11, 1938. w J KENDALL 2,104,929

SHAVING DEVICE Filed June 4, 1936 H HHHH/ Jan. 11, 1938 TE STATES PATENT OFFICE 11 Claims.

The principal objects of this invention are to provide a very simple form of shaving 'device which will clip the hairs cleanly without danger of abrading the skin and which may be readily 5 manipulated to move it upwardly or downwardly over the face with a natural movement of the hand, tilting it at a slight angle either up or down, the cutting of the beard being eflected without the use of soaps or creams.

A further and important object is to provide a form of shaving device which may be entirely manual in its operation or which may be electrically operated if desired.

The principal features of the invention consist in the novel construction of a hollow or tubularshaped head formed with rounded suriaces ap proaching a fiat transverse curve which is slotted inwardly from each side to co-operate with a reciprocating blade provided with a plurality of teeth to form shearing cutters.

A further important feature consists in the novel construction oi. a mechanism for reciprocating the cutter member whereby a rocker arm for reciprocating the blade is operated by an ee- 5 centric driven through a train of gears operated by a hand-manipulated lever.

In the accompanying drawing, Figure 1 is a perspective view of my improved form shaving device.

Figure 2 is an elevational detail view of the manually-operated mechanism.

Figure 3 is an edge eievational view of the device illustrated in Figure 1.

Figure 4 is an enlarged longitudinal sectional view 01' the cutter mechanism.

5 is an enlarged cm sectional view through the cutter device.

i 6 is an enlarged plan view of the outside of the cutter member.

Figure 7 is an enlarged plan view of the inner reciprocating cutter device.

Figure 8 is a diagrammatic illustration showing the application 0! the shaving device in two positions.

In carrying this invention into eflect, I provide a handle i of a long ovoid shape which is provided with a straight transverse slot 2 at one end in which the rectangular bar-shaped portion 3 of the tubular cutter device 6 is rigidly secured. The tubular portion 4 of the cutter device flares outwardly from the block 3 in the form of a projecting rounded surface 5 at one side and at the opposite side flares outwardly in a similar contour but of shallower or lesser dimensions and as this shallower curved side 8 is Joined with the higher rounded portion 5 by a fiat curved portion I, which is in a slightly diagonal relationship to the bar 3.

The tubular wall is here shown slotted longitudinally from points adjacent the ends at opposite sides oi the flat curved portion 1 where its curvature merges with the curvatures of the respective portions 5 and 8 and a plurality of narrow slots 8 are cut in the flattened top portion lol the tubular member extending inwardly from the longitudinal slots close in to the centre and the centre portion is formed with a longitudinal rib 8 which eiiectively reinforces the slotted i'iat portion l and forms a guide for the cutter II which is formed with a centre bar ll provided with a plurality of laterally extending cutter fingers i2.

The cutter bar i0 is curved to lit the underside of the curved central portion 1 of the tubular member and the downwardly flaringbar member 13 forms a sliding fit in the lower and converged portion 0! the tubular member immediately above the bar 3. r

The fingers I! of the cutter bar are preferably tapered at the ends and aregbevelied back to form cutting edges.

A cylindrical recess i4 is formed in the underside of the centre bar II or the cutter centrally or its length with a semispherical bottom and in this recess is inserted the bail end i5 0! a rocker member i6 which is pivotally mounted on a frame I! arranged within the handle I, the semispherical bottom formation providing a seat against which the ball end i5 is adapted to seat. The rocker member i8 extends upwardly through a'slot II in the bar 3 and a coiled compression spring i8 surrounding the upper end of the rocker member presses upwardly against the bar ii holding the cutterblade ill in close sliding engagement with the underside of the slotted tubular member 4 and as shown in greater detail in Figures 4 and 5 the ball end l8 may be slidably mounted on the reduced end portion of the rocker so that the spring pressure will be applied therethrough to the cutter blade llby reason of the spherical engagement of the ball I! with the semi-spherical blade recess.

The rocker member I6 is adapted to be oscillated in such a manner as to reciprocate the cutter bar i l with a very rapid motion so that the cutter fingers I? will perform a shearing operation with the underside of the member 4 and while numerous forms of mechanisms may be devised for eiiecting the oscillation of the rocker member, I have herein shown a very simple form of device as a preferred construction. I

The rocker member is provided with a fork end which engages a disc 2| eocentrically mounted on a spindle 22 mounted in the frame l'l. On this spindle is mounted a flywheel 28 and beside the flywheel is mounted a suitable gear pinion, which is not shown and which meshes with a gear 24 mounted on a spindle 25, which in turn is driven by a pinion operated by a gear wheel 26. This latter gear wheel is driven through a gear and ratchet operated by a quadrant 21. This quadrant is pivotally mounted in a lateral extension 28 of the frame I! and has a handle 29 which extends outside of the casing handle I in such a manner as to be grasped by the hand of the user while holding the handle I and by a squeezing operation the handle 20 is swung inwardly on its pivot to operate the train of gears driving the flywheel and eccentric disc which operate the osciliatable rocker member I. The handle 29 is returned to the outward position by a suitable spring ll.

It will be understood that following the inward movement of the pressure handle the train of gears will operate the flywheel at a high speed and this movement will continue during the return movement ofthe handle, so that the blade will continue to reciprocate at a high rate of speed continuously during the squeezing and return movements of the handle.

The tilted formation of the tubular cutter provides a structure which will cut effectively even when the handle is tilted in a downward direction as illustratedin the upper designation of the shaving device in Figure 8, and the larger rounded portion 5 of the tubular member permits of the device being tilted at a greater angle in relation to the surface of the face in an upward movement as is illustratedby the lower diagrammatic iliustation in Figure 8.

The open tubular structure of the cutter 'permits the hairs to fail clear of the cutter immediately they are sheared oi! and the rounded surfaces 5 and form channels into which the hairs fall clear of the cutter.

The sloping shape of the cutter head with the flat curved top and the rounded edges permits of an easy movement in drawing the device over the face, both in a downward and upward direction and the cutting effect is uniform. With the smooth rounded surface of the cutter head the user of the device may press the device firmly against the face as it is drawn thereover so as to smooth outall surface inequalities and clip the hairs close to the skin surface, there being no danger of cutting or scraping the face in any way.

The particular form of the cutter head is highly desirable and may be utilized with or without the particular form of vibrator operating mechanism as described and if desired electrical vibrating apparatus may be used.

What I claim as my invention is:-- I

1. A shaving device comprising a head of tubular form having a flat transverse curve extending into rounded side surfaces, said head being slotted longitudinally at the Junction of the respective curvatures, said tubular head having slots extending inwardly from the longitudinal slots toward the centre, a toothed cutter slidably mounted to reciprocate longitudinally in intimate shearing relation to the flattened slotted portion of said tubular head, and means for reciprocating said cutter.

2. A shaving device composing a head of flattened tubular form presenting an obliquely sloping flattened side terminating in rounded formations, said head being slotted longitu ii at the junction of the flattened and rmpective rounded portions, said flattened portion having a plurality of narrow parallel slots cut therethrougln extending from the rmpective longitudinal slots inwardly toward the centre, a'toothed cutter slidably mounted on the inner side oi said tubular head and engaging the inner side of the flattened slotted portion, and means for reciprocating cutter within the head.

3. A shaving device comprising a head oi flattened tubular form presenting a longitudinal guide portion and having a plurality oi? parallel slots extending transversely inwardly from thesido of the flattened portion toward the longitudinal guide portion and opening into the interior of the tubular head, a bar extending longitudinally oi said tubular head forming with the slotted wall of the head a cavity to receive the severed hairs through said slots,said barhaving a sliding guide ing engagement with the inner side oi the longi tudinal guide portion of said head, a plurality of cutter teeth extending laterally from liar and slidably engaging the inner nde oi the slotted tubular head, and means for reciprocating bar lengthwise of said tube.

4. A shaving device comprising a head of tuhu= lar form having a. fiat transversely curved siir= face slanting obliquely and merging into rounded side surfaces, one of which is of a larger radius than the other, said flat and oblique angled por tion of the head being slotted inwardly from the rounded side portions toward the centre, said head also having a longitudinal guidewny in the under portion of the tubular cavity, a'bar slidalely mounted in said guideway having laterally disposed cutter teeth at either side engaging the inner side of the slotted tubular member, a rocker member pivotally supported and extending into a recess in said bar, a compression spring mounted on said rocker member and holding said he? its toothed upper portion in close engaging contact with the slotted tubular head, and means for rocking said rocker member on its pivot.

5. A shaving device comprising a substantially flat tubular head having-a longitudinal rlh ex= tending inwardly and running longitudinally thereof, said head having transverse slots extend ing inwardly from the outer sides thereof, a cut ter member having a slot in the top slidahly engaging said rib and provided with laterally extending cutter fingers engaging the inner side oi the slotted head, a rocker. member pivotally snp= ported below said cutter bar and extending upwardly thereinto, spring means for holding the cutter member in contact with the slotted head, and means for oscillating said rocker member.

6. A shaving device as claimed in claim 5 in which the rocker member is provided with a ball shaped end and a cylindrical recess in the underside of said bar is provided with a semi-spherical bottom for seating contact with the inward end of the ball-shaped end of the rocker.

7. A shaving device comprising a handle havinga transverse slot at one end, a bar mounted in said transverse slot having a flattened tubular portion extending longitudinally thereof, said fiattened portion having a plurality of parallel slots extending inwardly from opposite sides, a fiattened cutter blade having parallel teeth co-opcrating with the edges of the slots in said tubular head to form shears, guide means co-operating with said cutter blade at the top and bottom, said cutter blade having a bearing socket and said bar having an opening in register with said blade socket, a rocker member pivotally mounted in the handle extending upwardly through the opening in said bar and having a rounded head operatively extending into said cutter bar socket, and means within the handle for oscillating said rocker member.

8. A shaving device comprising a tubular head having a centre guide bar portion and transverse slots extending inwardly toward said centre bar portion, a cutter member having guiding contact with said centre guide bar portion and fingers operating in shearing engagement with the edges of said slots, a rocker member operatively engaging said cutter bar, eccentric means arranged within thehandle for operating said rocker member, and a manually operated train of gears for operating said eccentric member.

9. A shaving device comprising a head of flattened tubular form presenting an obliquely sloping flattened side terminating in rounded formations, said head being slotted longitudinally at the junction of the flattened and respective rounded portions, said flattened portion having a plurality of narrow parallel slots out therethrough extending from the respective longitudinal slots inwardly toward the centre, a toothed cutter slidably mounted on the inner side or said tubular head and engaging the inner side of the flattened slotted portion, and means for reciprocating said cutter within the head, said terminal rounded formations of the head being of difl'erent radii with the flattened slotted side sloping downwardly from the end of greater radius to the flnlng an intermediate working portion cylindrically' curved and arcuately slotted along each side of its longitudinal center line to provide shearing teeth.

WILLIAM J. KENDALL.

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