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King Oscillator

PatentUS1890733

InventionSafety Razor

FiledFriday, 3rd October 1930

PublishedTuesday, 13th December 1932

InventorJohn Laurence King

OwnerInc. The King Holdings

LanguageEnglish

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A PDF version of the original patent can be found here.

Patented Dec. 13, 1932. 1,890,733
United States Patent Office.

John L. King, of New York, N. Y., assignor to The King Holdings, Inc., a corporation of Rhode Island Safety Razor Application filed October 3, 1930, Serial No. 486,265. Renewed April 12, 1932.

This invention relates to safety razors, and more particularly to a safety razor of the type wherein the blade is reciprocated longitudinally during the cutting operation.

Heretofore, in safety razors of the type herein disclosed, the blade has been mounted on a carriage and the latter reciprocated by various means. Such a structure is objectionable in that the weight of the razor, due to the carriage is increased, and the reciprocating action of the blade is not positive.

It is an object of this invention to provide a safety razor in which the blade is directly reciprocated, no carriage for the blade being necessary.

A further object is the provision of a reciprocating device in such a razor, wherein the number of actuating elements is reduced to a minimum, thus greatly simplifying the action of the razor and reducing the cost of manufacture.

These and other objects are attained by the novel construction, combination and arrangement of parts hereinafter described and shown in the accompanying drawing, constituting a material part of this disclosure and in which:

Figure 1 is a plan view of the safety razor.

Figure 2 is an elevational view of the razor.

Figure 3 is a side elevational view of the razor.

Figure 4 is a plan view of the razor with the retaining plate extended.

Figure 5 is a sectional view taken on line 5—5 of Figure 1.

Figure 6 is a plan view of a blade used in the razor.

Figure 7 is a plan view of a support for the blade shown in Figure 6.

Referring to the drawing, the safety razor is shown to include a handle 6, preferably tubular, having its upper extremity 7 passing through an aperture in a blade supporting plate 8, the portion 7 being crimped over the edges of the aperture in the plate to securely hold the handle thereto.

The plate 8 is provided with downturned guards 9 and 10, so that the razor is adapted for use with a double edged blade. The plate 8 also has apertures 11 through which excess lather and water, etc., may drain so that the action of the blade will not be impeded. Projecting upwardly from the plate 8 are a pair of lugs 12 for positioning a blade on the plate, the latter also having a notch 13 at one end which cooperates with a spring clip 14 integral with a retaining plate 15, which has a downturned portion 16 at the opposite end hinged by means of a pivot pin 17 to downturned portions 18 of the plate 8.

The retaining plate 15 has a longitudinal slot, at the ends of which are struck up from the plate a pair of ears 19 and 20, in which are pivotally mounted the projections 21 and 22, respectively, which projections are integral with a roller 23, having knurled portions 24, and a centrally located cam slot 25. Positioned below the cam slot 25 is a saddle 26 having lips 27 slidably mounted on the longitudinal edges of the aperture in the retaining plate 15. Fixed to the saddle 26 is a pin 28 adapted to be acted upon by the cam slot 25, said pin 28 having a head 29 passing through a central aperture in a razor blade 30, the latter having elongated slots 31 at its ends through which pass the lugs 12 of plate 8.

In operation, the blade 30 is positioned on the plate 8 by passing the lugs 12 through the slots 31, and the retaining plate 15 is snapped into position over the supporting plate 8, bringing the head 29 into position in the central aperture of the blade 30. The razor is now in condition for the shaving operation, which is similar to the usual method employed with a double edged blade. As the blade is drawn over the face in a shaving position, the knurled portions 24 contacting with the surface being shaved, cause the roller 23 to rotate and the cam slot 25 and pin 28 to reciprocate the blade 30.

In Figure 6 is shown a preferred form of blade for use in the razor. This blade is provided with a pair of slots 40 at each end, each pair of slots extending angularly from a point near the transverse axis and edges of the blades to points near the ends and longitudinal axis of the blades. The supporting plate 8 (see Figure 7) has four upstanding angularly directed bars 41 which cooperate with the slots 40 to guide the blade during its reciprocating movement. By arranging the slots 40 and the guide bars 41 as shown, a positive guiding of the blade is obtained, as the bars engage the edges of the slots at widely spaced points.

The blade is provided with an aperture 42 to receive the head 29.

It will be seen that the blade, in addition to the usual cutting action, has a transverse cutting action, which insures a positive cutting of the hairs. This feature is especially desirable for tough beards in which the usual blade has a tendency to slide over the hairs. With the razor herein disclosed, the transverse cutting action prevents the sliding of the blade over the hairs, and insures a smooth and satisfactory shave. The foregoing disclosure is to be regarded as descriptive and illustrative only, and not as restrictive or limitative of the invention, of which obviously an embodiment may be constructed including modifications without departing from the general scope herein indicated and denoted in the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is :

1. In a safety razor, a handle, a razor blade support attached to the handle, a plate for retaining the blade on the support, a saddle slidably mounted on said plate, a pin projecting from the saddle, and cam means rotatably mounted on the plate for cooperating with the pin to reciprocate the saddle.

2. In a safety razor, a handle, a razor blade support fixed to the handle, lugs projecting upwardly from said support to position a razor blade thereon, a plate for retaining the blade on the support, a saddle slidably mounted on the plate, a pin fixed to the saddle, said pin having a head adapted to pass through a central aperture in a blade carried by the support, and cam means carried by the plate for cooperating with the pin to reciprocate the saddle.

3. In a safety razor, a tubular handle, a razor blade support attached to the handle, said support having an aperture directly above the tubular handle, a plate for retaining a blade on the support, a saddle slidably mounted on the plate, a pin fixed to the saddle, said pin having a head passing through the aperture in the support, and cam means carried by the plate for cooperating with the pin to reciprocate the saddle.

4. In a safety razor, a handle, a razor blade support attached to the handle, means on the support for positioning a razor blade thereon, a plate for retaining a blade on the support, a pin slidably mounted on the plate, and cam means carried by the plate and cooperating with the pin to reciprocate the latter.

5. In a safety razor, a handle, a razor blade support attached to the handle, a plate for retaining a blade on the support, a pin slidably mounted on the plate, and cam means carried by the plate and cooperating with the pin to reciprocate the latter.

6. In a safety razor, a handle, a razor blade support attached to the handle, a plate for retaining a blade on the support, a pin slidably mounted on the plate, and a roller carried by the plate, said roller having a cam slot cooperating with the pin to reciprocate the latter.

7. In a safety razor, a handle, a razor blade support fixed to the handle, means on the support to position a razor blade, a plate for retaining a blade on the support, a saddle slidably mounted on the plate, a pin fixed to the saddle, said pin having a head adapted to pass through a central aperture in a blade carried by the support, and means carried by the plate for cooperating with the pin to reciprocate the saddle.

8. In a safety razor, a handle, a razor blade support attached, to the handle, a razor blade having a central aperture, means to position the blade on the support, a plate for retaining the blade on the support, a saddle slidably mounted on the plate, a pin fixed to the saddle and having a head passing through the aperture in the blade, and means carried by the plate cooperating with the pin to reciprocate the saddle.

9. In a safety razor, a handle, a razor blade support attached to the handle, a razor blade having a pair of slots, a plate for retaining the blade on the support, a pin slidably mounted on the plate, said pin engaging the razor blade, cam means carried by the plate and cooperating with the pin to reciprocate the blade, and a pair of projections on the support cooperating with the slots to guide the blade.

In testimony whereof I affix my signature.

John L. King.