US1367909A

US1367909A - Safety-razor

Info

Publication number: US1367909A
Application number: US396185A
Authority: US
Inventors: John L King
Original assignee: ROTARY KING SAFETY RAZOR COMPA
Current assignee: ROTARY KING SAFETY RAZOR Co; ROTARY KING SAFETY RAZOR COMPA
Priority date: 1920-07-14
Filing date: 1920-07-14
Publication date: 1921-02-08
Anticipated expiration: 1938-02-08

Description

J. L. KING.

SAFETY RAZOR.

APPLICATION FILED JULY 14,1920.

1,367,909. Patented Feb. 8, 1921.

d v E 4, 1-1 T 7 18 2/6271655 UNITED STATES- PATENT OFFICE.

JOHN L. KING, OF NEW YORK, N. Y., ASSIGNOR TO ROTARY KING SAFETY RAZOR COMPANY, A CORPORATION OF DELAWARE. I

' SAFETY-RAZOR.

Specification of Letters Patent.

Patented-Feb. s, 1921 Application filed July 14, 1920. Serial No. 396,185.

zen of the United States, residing at New York, Kings county, New York, have invented certain new and useful Improvements in Safety-Razors, of which the following, taken in connection with the drawings, is a description.

My invention has for its object the production of a razor of the kind known as safety razors of the reciprocating blade type, whereby a reciprocating motion is transmitted to the blade while in use.

A further object of my invention is to provide mechanism for accomplishing the above result which shall be very simple in construction and which will be capable of quick and easy assembly and operation.

It is also an object of my invention to provide an improved blade for use with this razor to cooperate with means provided for engaging the blade and imparting a reciprocating motion thereto while the razor is in use. I consider of special importance the means provided in this structure for transmitting the reciprocating motion to the blade, it being more simple and effective thanany other form now in use.

To accomplish the above objects I have provided a friction cam roller mounted upon the blade, the latter being supported at an angle to the razor handle whereby the roller contacts with the face while in use and thereby actuates mechanism connected with the blade to cause it to reciprocate in a direction angular to the direction of movement of the razor over the face. This also causes a better and easier cutting action of the blade without any undesirable effect upon the surface of the skin and also prolongs the period of usefulness of each razor blade.

In the accompanying drawings I have illustrated what I now consider an embodiment of the preferred form of my invention, although it will be understood that such changes as to size, shape and proportion of the different parts, and their relative positions with respect to each other, may be made without departing from the spirit of my invention, and in these draw- Figure l'- is a front elevat1on of a razor embodying my invention,

Fig. 2 1s a side view of the same,

Fig. 3 is a plan view ofthe supporting frame detached from the handle;

Fig. 4. is a perspective view of the blade retaining member, and

\Fig. 5 is a plan view of the razor blade.

Referring to the drawings 6 represents the handle thereof which is preferably knurled as shown, for greater convenience in handling. Rising from one end of this handle is'a threaded shank upon which the razor head is supported.

7 is a supporting frame member having. at the central portion of one elongated edge,

thereof a projection 8 provided with an opening 9 which fits over the shank on the handle and is securely attached thereto by means of a threaded nut 10. Upon each side of this engaging member 8 of the frame 7 are upwardly extending bearing members 11 within which is mounted the cam roller 12.

The plane of the blade supporting member 7 is inclined downwardly from the.

roller 12, and at an angle to the handle 6 as shown more clearly in Fig. 2.

Two elongated openings or slots 13 are provided through the body of the support.

ing member 7 and near the outer edgethereof is an elongated opening 14: which extends nearly from end. to end of said supporting member 7 for a purpose hereinafter explained. The free elongated edge of this blade supportingmember 7 is provided with a plurality of teeth or projections 15, which,

when the parts are assembled pro ect be-' yond the cutting edge of the blade, and are slightly bent at an angle away from the cutting edge of the blade as more clearly shown in Fig. 2.

The blade 16 is preferably rectangular in shape as shown in Fig. 5, and is provided with two openings 17 therethrough nearer to the elongated ed e thereof oppositethe cutting edge 18. T is blade is adapted to rest upon the plane of the supporting memher .7, and the slots 17 register with the elongated openings 13 on said supporting member. j v

19 is a blade retaining device formed ofan upper and a lower member -20 21, re spectively, which are movably connected together at 0 end thereof, as at 22', inthe form of a' hinge. The upper retaining member 20 is provided at a point mediate the length thereof with aprojection 23,

' extend "through the openings 13 in the supporting frame and through the opening 17 in the blade. The free end of the upper retaining member 20 is provided with a latch 25, which engages with the edge 26 of the lower retaining member. 21, thereby maintaining the blade in roper position upon the supporting frame I The periphery of the friction roller 12 is provided mediate of the length thereof with a circumferential cam groove 27 When the device is assembled the projection 23, on the-upper .retaining member 20, extends into this cam groove 27. In operation when the roller 12 contacts with the face it is caused to revolve, and when revolving transmits motion to the blade retainer 21. By reason of the projection 23 extending into the groove 27 it causes a reciprocatingmovement of the blade 16 which .is fixedly secured to said retainer by the It will be observed that the cutting edge 18 of the blade isarranged directly over the elongated slot .1 1 in the supporting frame which is away from the face of the operator during the time the razor is in use. As the razor passes over the face a clean surface is left, all lather and hair passing through the slot 14 and accumulating on the under side of the supporting frame from which it can be quic'klyand easily removed.

From the foregoing description it will be seen that I have provided a reciprocating blade with means for actuating it which is simple in construction, and so arranged that there is no possibility of accidental displacement of the blade at any time, and the rotation and reciprocation of the same is definite and accurate.v

I cla1m:

1. In a .razor, a blade support having elongated openings therethrough, a blade having projections extending through both of the aforesaid registering openings and means'on said retaining member for transmitting a reciprocating motion to the blade while muse.

2. In a razor, thecombination with a supporting member having two elongated 0 enings therein alining with the longitu inal axis thereof, a blade having two small open- .ings therethrough adapted to r egister with the aforesaid openings in the blade support,

a retaining member engaging said blade and support and adapted to transmit a reciprocating motion to said blade while the razor is in use.

3. In a razor, the combination of a handle and a supporting member attached to one 'lng operative engagement wit end thereof, said supporting member having a'portion thereof positionedat an angle to the handle, a blade on said support, a retaining member contacting with said blade and support above and below the same, saidretaining member having a projection to transmit a reciprocating motion to said sides thereof, a rotatable member having a cam groove upon the periphery thereof, a projection on the retaining member extending into said groove and adapted to impart a reciprocating motion to the blade while the razor is in use.

5. In a razor, the combination of a handle, a supporting frame detachably secured to one end thereof, said frame having a blade supporting portion arranged at an incline to the handle, a blade, ahinged retaining member engaging said blade and supporting frame above and below the same, a roller having a circumferential cam groove on its periphery mounted in -said supporting frame, and mechanism co-acting with said roller to transmit a reciprocatingmotion to the retaining frame and blade.

6. In a razor, a non-flexible detachable blade having apertures therethrough, a supporting frame, a hinged retaining frame engaging above and below said blade and supporting frame, said retainin frame hava movable mechanism.

7. In a razor, a non-flexible detachable blade having apertures therethrough, a supporting frame having slots registering with the apertures through the blade, a hinged retaining member having projections extending through the aforesaid apertures and slots, and means on said retaining member for transmitting a reciprocating motion to the blade while the razor is in use.

8. In a razor, a blade having openin therethrough near the rear edge of the blade, a supporting frame having slots registering with the aforesaid openings, a retaining member engaging the blade and supporting frame above and below the same, said memher having projections extending through the openings in the blade and supporting frame, and said supporting frame having a slot extending from end to end theredf in line with the cutting ed e of the blade.

9. In a razor, a bla e having openings with the aforesaid openings in the blade, a retaining member engaging the blade and supporting frame above and below the same, said frame having projections extending through the openings in the blade and supporting frame, a roller having a circumferential cam groove and mounted in said supporting frame above and at the rear of the blade, and means on the retaining member co-acting with said cam groove to transmit a reciprocating motion to the razor blade.

10. In a razor, a blade having openings therethrough near the rear edge of the blade, a supporting frame havin a portion thereof arranged on an angle, said supporting frame having an elongated slot extending from end to end of said frame alining with the cutting edge of the razor, and a re taining member engaging said blade and supporting frame above and below the same. 11. In a razor, a blade having openings therethrough away from the cutting edge of the blade, a supporting frame having slots registering with the aforesaid openings, said supporting frame having elongated openings extending parallel with the cutting edge of the blade, the free edge of said supporting frame having guard teeth, a retaining member engaging said blade and supporting frame, a roller having a circumferential groove therein mounted in the aforesaid supporting frame, and means on the retaining frame co-acting with said cam groove to impart a reciprocating motion to the blade while in use.

12. In a razor, a supporting frame, a blade mounted thereon, a rotative element provided with a circumferential cam groove, a retaining frame engaging through openings in said'supporting frame and blade, and means on said retaining frame co-acting with the aforesaid cam groove to transmit a reciprocating movement to the blade from the rotative element.

13. A razor comprising a handle, a supporting frame mounted thereon and having a portion thereof arranged at an incline to said handle, a rotative element mounted in said frame and a blade having openings therethrough registering with corresponding openings in the inclined portion of the supporting frame, a movable retain ng member engaging said blade and supporting frame above and below the frame, and means on said retaining member co-acting with the rotative element to transmit a reciprocating motion to the blade when in use for shaving.

14. A razor comprising a handle, a supporting frame mounted thereon and having a portion thereon arranged at an incline to said handle, a rotative element mounted in said frame, a blade having openings therein registering with the correspondin openings 66 through t e supporting frame, a hinged retaining member having engagement with said blade and frame and means for movably attaching said retaining frame above and below the blade and supporting frame. 70 15. A razor comprising a handle, a supporting frame mounted thereon, having a portion thereof arranged at an incline to said handle, a rotatable member mounted bearings at the rear edge of said frame, said 7 frame having a plurality of slotted openings therethrough and a row of guard teeth upon the free edge thereof, a blade having openings therethrough registering with corresponding openings through said frame, said blade being positioned below and in front of the aforesaid rotatable member, a retaining member movably engaging the blade and supporting frame, said retaining member co-acting with the rotatable member to transmit a reciprocating motion to the blade when in use.

16. A razor, comprising a handle, a supporting frame mounted thereon and having a portion thereof arranged at an angle to said handle, a rotative member mounted in said frame, a blade having openings registering with corresponding openings in the inclined portion of the supporting frame, said blade being positioned below and in front of the rotatable member, a'hinged retaining member movably engaging through the aforesaidopenings in the blade and supporting frame, and having means co-acting with said rotatable member to transmit a re- 1 ciprocating motion to the blade when in use.

17. In a razor, the' combination of a handle, a suppo'rting'frame mounted upon one end thereof, and having a portion arranged at an incline to the handle of the 5 said supporting frame, said frame having a plurality of elongated openings therein, said frame having guard teeth at the lower inclined edge thereof, bearings formed at the opposite edge of said frame, a rotative 110.

element mounted in said bearings, said element having a-circumferential cam groove formed therein, a blade having openings therethrough registering with corresponding openings in the supporting frame, a hinged retaining member, projections extending from the lower portion of the hinged retaining member through the registering opening in the blade and supporting frame, and a projection carried on the upper portion of the hinged retaining member coacting with said rotative element to transmit a reciprocating-motion to the blade when in use.

In testimony whereof I have signed this specification. v

JOHN L. KING,