US2165046A - Shaving instrument and blade therefor - Google Patents

Description

July 4, 1939.

G. GREENSTEIN 2,165,046 SHAVING INSTRUMENT AND BLADE THEREFOR Filed Aug. 12, 1936' lill IHIIIIIIQIII INVENTOR GEORGE GREEN/STEIN ATTORNEY Patented July 4, 1939 UNITED STATES PATENT OFFHCE SHAVING INSTRUMENT AND BLADE THEREFOR Claims.

This invention relates to safety razors and is an improvement on my application filed November 4, 1935, Serial Number 48,067.

In addition to the objects and advantages set 5 forth in that application, the present invention seeks to provide a razor having improved means for clamping a blade in the head thereof, an important feature residing in the provision of means for permitting ready insertion of the blade into the head and preventing inadvertent dislodgement of said blade when in said position.

Another contemplated feature resides in the provision of means for firmly positioning the blade in the razor head whereby the shaving edge of the blade is uncontacted and free of encumbrances.

Still another feature resides in the provision of means for gripping the underface of an intermediate portion of the blade, the rear of the upper face of the blade being in whole or in part in contact with a portion of the razor head, and the front of said upper face being contacted by portions of the razor head at or adjacent the lateral edges of the blade.

The foregoing objects, features, and advantages of the invention and others later apparent are incorporated in the instant disclosure com prising the following specification and the accompanying drawing which is illustrative of preferred embodiments of the invention as at present contemplated.

In the drawing:

Fig. 1 is a front view of a razor constructed in accordance with this invention.

Fig. 2 is a top 'plan view thereof.

Fig. 3 is a sectional view as taken along the line 3-3 of Figure 1 and looking in the direction of the arrows.

Fig. 4 is a side view, the razor handle broken away.

Fig. 5 is a vertical sectional view as taken on the line 5-5 of Figure 1.

Fig. 6 is a similar View with the handle swung to release the blade.

Figs. 7, 8, and 9 are semi-diagrammatic views showing various razor head structures.

Figs. 10 and 11 are respective side and front views of alternate forms of razor structures.

Fig. 12 is a plan view of a preferred form of a razor blade.

Fig. 13 is a fragmentary sectional view taken along line |3--|3 of Figure 1.

Referring to the drawing in greater detail and with special reference to Figures 1 to 6 inclusive, and Figure 12, a head generally designated as 15 preferably comprises a housing l6 and a combined clamp and guard plate I1. The housing i6 is preferably formed with a top wall I8, lateral walls 19, and a rear wall 20. The top wall 18 is preferably cut out as at 2| so as 5 to be substantially U-shaped and exposing the major portion of a blade 22. Ihus the top I8 is provided with laterally opposed portions 23 adapted to overstand and contact commensurate portions of the blade at or near the front 10 corners thereof.

To the housing I 6 there is fixedly secured an angle shaped member 24 having one leg 25 arranged midway of the width of the housing and positioned in the corner between the top 18 and 15 the rear wall 28, and a downreaching leg 26 forming a trunnion for the passage of a pivot rivet 21 secured with the handle of the razor 28. The mentioned downreaching portion is preferably substantially circular in outline as 20 seen in Figure 1 and is provided on its peripheral face with a plurality of indentations 29 respectively associated with the spring pressed detent 30 carried by the handle to hold said handle in the three desired positions in relation to the 25 head.

The portion 25 is thus provided with a face 3| adapted to be contacted by the portions 32 of the blade, the blade being cut away as at 33 to permit its insertion into the head past the 30 downreaching extension 26.

The member 2 1 is also formed with portions 34 adapted to be arranged within the cutouts 35 in the blade, said portions extending for a short distance below the face 3| so that the blade may 35 readily be inserted below said portions and forced upwardly so that the blade portions 32 assume a position to the rear thereof. The cut- outs 33 and 35 thus form a T-shaped slot opposite the shaving edge.

The clamp and guard member I! is preferably pivoted as at 36 to the housing IB and is adapted to be rocked about said pivots. The member I1 is formed with an upwardly extending longitudinal portion 31 adapted to contact a medial por- 45 tion of the under face of the blade and with an extending guard portion 38 preferably out of contact of said blade.

As shown in the drawing (Figure 5) the plate I! may be rocked to blade clamping position by means of a cam 38% on the handle 28, said clamping position being attained when the handle is at right angles to the head or when swung in the direction of the arrow 39 to a parallel relation to the head. The plate I! is rocked as shown in Figure 6 to a non-clamping condition when the handle 28 is rocked in the direction of the arrow so the cam 4| on the handle engages a rear portion of said plate.

It will be noted from the above that the blade is contacted at the rear central portion and at the front lateral portions of its upper face by the housing or portions afiixed thereto, and is contacted along a medial longitudinal portion of its lower face by the clamp plate. This assures proper non-displaceable relationship of the blade with the razor, and to further insure against inadvertent dislodgement of said blade, the blade portions 32 are caught behind the downreach ing extensions 34 of the angle member 26. This form is shown in the diagrammatic Figure 7 and can be varied as shown in Figure 8 'so that the entire rear portion of the head is provided with a face or seat 3la. for the blade; or as shown in Figure 9 with laterally spaced seats 3lb'. In all of these forms the rear portions of the blade is in contact in whole-or. in part with portions of the head.

While in the present case and in the previously mentioned application, cam means are described for operating the razor, it should be understood that other means than cam means can be employed, as for instance, in the showing of Figure 10, the handle 28a may be rotationally carried with the clamp plate I! and have a screw thread engagement as at 42 with a stud pivoted at 43. Thus the said clamp plate H, by rotational manipulation of the handle 28a, may be swung around its pivot 36a.

Anothermanner of accomplishing the movement of thehead IS in relation to the handle 28b is shown in Figure 11 where a thumb nut 44 through a worm 45' operates on a worm wheel sector 46 cut in the extension 26 of the head to rock said head to a right angle or parallel position with the handle.

The present illustration does not exhaust the variations in construction which may be .employed in providing a razor as contemplated herein. For instance, linkage means may be utilized instead of the cam, screw, and gear means here illustrated, and therefore, the 'spiritand scope of the'invention as hereinafter claimed should have a broader basis of interpretation than the pres-' 1 ent detailed disclosure which is intended'only to describe the illustrated embodiments thereof.

I claim:

1. A razor comprising a head, a blade clamping guard plate pivoted to said head, said head having means for contacting the rear central area and the front lateral portions only of the blade, and said guard plate having means for contacting said blade along a medial longitudinal portion only thereof, and means for positively positioning said guard plate contactingmeans in relation to said head contacting means.

2. In a razor, a housing having a rear wall, a downreaching extension spaced from said rear wall, a blade adapted to be positioned in said housing and having a cut-out portion to accommodate said downreaching extension, seat means in said housing for engaging only the rear central portion of the upper face of said blade, means in said housing for engaging front lateral portions only of the blade, and means for pressing said blade against the last mentioned means and against said seat means.

3. In a razor, a housing having a rear wall, a downreaching extension spaced from said rear wall, a blade adapted to be positioned in said housing and having a cut-out portion to accommodate said downreaching extension, and seat means in said housing for engaging only a rear portion of the upper face of said blade and means for pressing said blade into yielding engagement against said seat means.

4. In a razor, a housing having a downreaching extension, a lateral downreaching portion of lesser extent than said extension on each side thereof, and a blade adapted to be positioned in said housing and having cut-out portions to accommodate all of the said downreaching members, a fourth downreaching portion of lesser extent than the lateral portions, said blade being provided with a portion adapted to be positioned behind each lateral portion and to be 'yieldingly pressed against the under face of the fourth portion.

5. In a razor, a housing having a T-shaped I downreaching extension adjacent the rear wall of said housing, a blade having a cut-out portion to accommodate said downreaching extension, means in said housing for positioning the blade, seat means for engaging only a rear 'portion'of the upper face of said blade and means for pressing said blade into yielding engagement against said seat means.

' GEORGE GREENSTEIN.

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