US2282748A - Dry shaver - Google Patents

Description

Myflztflaftz. QJ. H. RAND, m.; mL y 2,282,748 A y DRY SHAVER Y n Film March 31, 193e lFin-,1

Patented May 12, 1942 UNITED STATES; PATENT OFFICE 122mm i er.: e. enteramente assignment signora, by memey yItalia1 lne., Buffalo, N.

v tl, to Remington Y., :corporation ol Delsppnaon Mms si, ma, seria No. 199,134

invention rentas to imprevements in dry`v .-shavers and more particularly to a type of razor u is 's shearing head is mprisingla med outer y cutter VIlancl an inner cutter Il.

A coil il is secured to the core 'IG by a sheet metal clip Il. The coil Il and core i6 form -a casing, and also the tree movement sets upa vibration due to the inertia oi' the arm."

Therefore,the principal object of the inven tion is to provide a cushion yor yielding stop, of

sound deadening material such as rubber, in the base oi' the shearing head to absorb. the shock and resiliently limit the stroke oi the actuating arm engaging the inner cutter thereby tending to silence vthe razor.

Another object is to provide a resilient stop which will accelerate the reversal of movement oi an oscillating arm.

A further 'object oi the invention is to provide a satisfactory dry shaver that may be manu- Iactured with less precision at a minimum cost.

Other and additional objects, together with the'constructlon, combination, arrangement and relative location of the parts embodying the inventionwill be disclosed in the following speci cation taken in connection with the accompanying drawing in which:

' Fig. i is an elevational view of the device em-l bodying our invention with parts of the casing broken away to reveal the motor,

Fig. 2 is an enlarged top view o! the device shown in Fig. 1, 1

Fig. 3 is a cross sectional view taken along line t-- ol' Fig. 2,

Fig. 4 is a view of the base ot the'shearing head ci our device taken substantially along line 4 4 of Fig. 3, revealing a sound deadening cushion to absorb the shock of the actuating arm of the armature, and

Fig. 5 is a View similar to that shown in Fig. 4 disclosing modified means to absorb-the shock of the actuating arm of the armature. i

i Like characters oi references refer to like parts in all the gures of the drawing. K Referring more particularly to Fig. 1 the device embodying the invention is contained in a type of well known A. C. magnet adapted for use onlywith alternating current which issupplied over wires V2li. VThe core I6 is magnetized twice for each cycle ot current, thus it a sixty cycle current is used the core will be magnetized one hundred andtwenty times per second.

It is well known that the addition of a set oi interrupter contacts will adapt this type of vibrator for use with either A. C. or D..C. current. A bracket 2i is securedby screws 22 to a seat in the base o! casing il. An upright armature 23 of laminated plates is secured at its lower end to bracket 2|. To the upper end oi armature 2l is fastened an actuating arm 24. A pair o! reaillent plunger-s 2i are shown having their ends seated in a plate 2i which also hasa cut-out portion to permit clearance for arm 24. Arm 24 and resilient plungers 26 extend through apertures 21 and 2l, respectively, at top of casing Il and engage the inner cutter I5. The arm 24 engages a slot therein to oscillate the cutter and, plungers 2l torce the cutter bars of the inner cutter into shearing engagement with the cutter bars oi .the outer cutter. Access to motor il may be had by removing the three screws 29 in a cover plate secured to one side of casing In.

Outer cutter i4 has apertures 30 and 3| through which arm 24 and plungers 25 respectively extend. Aperture 30 as shown in Fig. 4 is elongated to permit a yielding stop 32 of noise deadening material, preferably rubber for the arm 24, to be firmly positioned therein.

,Cushion 32 has an opening 33 therein oi sufcient size to permit arm 24 to move freely but limit the amplitude oi.' oscillationy near its ends. Fig. 5 discloses a modification of the stop elel ment in the form of two rubber plugs 34 which suitable casing it which forms a grip handle for the shaver. Part of casing i8 is broken away and reveals a solenoid or vibrator type of a motor ii. Removably secured to casing i0 by set screw ilt snugly into enlarged ends of aperture 30. These stops form resilient means for limiting the oscillation of the arm 24 and, due to the quick returning action at the end of each stroke, the average velocity oi the inner cutter is raised. It is obvious that cushion 32 may be secured on the actuating arm 24 in place of being positioned in the aperture 30.

The outer cutter I4 is provided with slots 35 which are positioned diagonally to the longitudinal axis of the cutter. These slots form cutter bars 36. The slots extend down the wall oi the outer cutter forming comb members which The inner cutter I5 is provided with trans-A verse slots 38, positioned at right angles to the longitudinal axis of the cutter, which Iorm cutter bars I9.

In operation the motor Il oscillates the inner cutter at a high rate of speed thereby cutting each hair at least twice during the travel of theY razor over the face. In the case of long hairs such as side burns the comb members mentioned above draw the hair into the shearing surfaces where it is cut short and then it snaps into the next slot where it is cut again before the razor has passed on. `Simultaneously with the above action the entire razor is vibrating parallel to the longitudinal axis of rthe cutter or at right angles to the line of the travel of the cutter over the face. plitude than that of the inner cutter with the result that as the razor is drawn down the face there is a movement at right angles to said travel which tends to sift the hair of the beard through the slots 35 oi the outer cutter into a position in which they may be more readily cut.

This same sifting action tends to keep the razor constantly in motion thereby preventing the skin from forming ridges which may enter between the cutter bars and be chafed and This vibration is o! much smaller amsaid outer cutter having a base portion with a slot therein to permit passage of said vibratory means, and a rubber member positioned at each end of said slot for engaging the free end o! said vibratory means near said inner cutter and at the end of the stroke of vibratory motion of said means for limiting the amplitude of vibration and deadening sound.

2. A dry shaver comprising a casing having a compartment therein, an outer cutter having a base portion mounted on said casing at one end, said base portion being formed to provide a slot communicating with the compartment in said casing, an inner cutter reciprocably mounted in Said outer cutter. a vibratory member mounted on said casing at the end opposite to said outer cutter and having the free end extending through the slot in said base portion and inter-engaged with said inner cutter for reciprocating said inner cutter in the vibratory movement thereof, and a cushioning member mounted on said base portion in said slot for contacting the free end p0rtion ot said vibratory member near the end of its stroke of vibratory motion whereby the means for vibrating said member may operate thereon at a position intermediate said cushioning member and the opposite end of said casing.

3. A dry shaving head comprising a fixed outer cutter, an inner cutter movably mounted therein, vibratory means having a free end i'or engaging and oscillating said inner cutter, said outer cutter having a base portion with a slot therein to permit passage of the tree end of said vibratory means. and a resilient bushing positioned adjacent said free end portion of said vibratory means and at opposite sides thereof and operable at the end of the stroke of vibratory motion of said means for limiting lthe amplitude of vibration and deadening sound.

- JAMES H. RAND, Jn.

WALLACE H. menons.

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