US2117136A - Safety razor - Google Patents

Description

May 10, 1938. w. H. BLACK SAFETY RAZOR Filed Oct. 26, 1937 INVENTOR wllagff Har-mm2 Blcxck ATTORNEYS Plasma May 1o, 193s l 2,117,136

UNITED sTATEs PATENT oFFlcE SAFETY aszon. wuum ns1-msn nach. New York, N. 1r.

Application october es, 1m, serai No. mp1s 1: claim. (ci. sc-eoi This invention relates to safety razors, and The guard A Als iixedly secured to a tubular more particularly to that type of safety razor in handle D, said handle projecting downwardly which a blade is clamped and ilxed between a trom the center of the base of the channelgu'ard and cap. shaped guard A.

5 The primary object of the invention is to pro- Ihe reference character E is employed to in- 5 vide this type of razor which can be manually dicate generally an elevator which is in the form operated so as to turn the razor blade over. that 'of a frame having a base member Il with upis to say. give a rotary or turning movement of wardly projecting arms at its ends, and this approximately 180 degrees to the blade so that it base member I l and arms I5 fit neatly within l0 is reversed in the razor without removing the the guard A and are movable vertically therein. 10 blade from the razor. The elevator E is provided with a downwardly I have discovered that a blade rests if its poprojecting screw-threaded rod I6 iixedly secured sition is changed from side to side every time to the center of the base i4 and projecting into after a shave, and the razor of this particular the tubular handle D where it meshes with inapplication accomplishes this movement by metemal screw threads I1 in a sleeve il which has l5 chanical means which permits the operation rotary mounting in the handle. This sleeve is without the necessity of touching the blade or its manually turned preferably by means oi a milled cap with the fingers of the hand. head I! on the lower end of the same and which The invention embodies -many novel features is located outside of the handle D. and a screw 2o of construction and combinations and arrangeor other form of pin 20 is projected through the 20 ments 0f Perils. ell 0f which Will be mere fully milled head I9 into an annular groove 2l in the hereinafter described and pointed out in the handle D so as to prevent longitudinal moveclaims. ment of the sleeve but permit free rotary move- In the eeempenying drewingment thereof. i F18- 1 1S a tOD plan View 0f the razor with its To limit the upward movement of the screw 25 Darts in eleeed position: threaded rod i8 in the sleeve I8 a headed screw Fig. 2 is a view in longitudinal section on the 22 may b e capped into the lower end of the rod line 2--2 0f F18. 1; Il and engage the threaded portion Il ot the Fig. 3 is a view in transverse section on the sleeve lg when the elevator E reaches the ex.. line 3--3 01.' F18. 2; treme of its upward movement. '3"

Fig. 4 is an end view looking at the right-hand The cap B et lts ends ls provided with downend 0f Figi 1 and 2i wardly projecting arms 23 which at their lower F18 5 is a View Similar to Fig 3 but Showing portions are pivotally connected to the arms I5 the razor in Open position? of elevator by means of pivot pins 2l, and it Fig 6 1S a fragmentary Sectional dem View wm be noted that these pivot pins 24 are at one 3" 0n the une 5 0f F19 2' but Showing the P0' side of the longitudinal centers oi the arms 23. sition of the parts when the razor is open, that one arm n et its lower extremity adjacent the to say' as Shown in Fig' 5 0f the drawing; pivot 24 is provided with a laterally projecting Fig. 'I is a view in elevation looking at the side unger- 25 which, when the elevator moves up 40 of the razor with the latter in closed position; werd to. the desired elevation. engages a am 40 F1@ 8 is a' top plan View 0f the razor with lug 26 on the end of the guard A so that a conthe same in open position; tinued upward movement of the elevator will 19 is atldetai; Viemmamlih eletvation but' cause the cap E to swing laterally from the popa nsec on, o my prove e eva or. r My improved razor includes a guard indicated sinon shwn in Figs' 3 and 4 to the position 4 generally by the reference character A with shown in Fig 5' The upwardly projecting arms Il of the ele- :121g: Ca cap B cot-pentes to clamp and -ex a vator E are provided adjacent their upper ends The ard A constitutes an inverted ohanne1 with slots 21 which receive trunnions 28 on the shepedglember with pel-elle] upwardly project.. ends of my improved blade holder 29. This blade 50 lng webs l0 el; its Side edges which have outholder is in the form of a bar having longitudinal wardly dared flanges Ii at their upper extremiribs 3| thereon t0 enter Slots 01 Openings 3| in ties and toothed extensions I2 on the flanges, all the blade C. and between these ribs 3|. I Pri-Wide of which constitute a guard against which the a tum-button 32 which may be located in alineblade C is clamped by the cap B. ment with the ribsA to receive the blade thereon 55 and then turn at right angles so as to clamp the blade on the blade holder. g

Of course the invention is not limited to any specific means for clamping the blade on the bladeholder. and I have illustrated in Fig. 9 of the drawing a modii'ied form which dispenses with the turnbutton 32 and provides a slotted or notched tongue 33 at one end of the blade holder under which the blade is podtioned and then snapped or sprung into position over the ribs 30.

Aratchetpinionllisiixedlysecuredtothe blade holder at one end thereof and is engaged by a ratchet rack 2|. This ratchet rack 35 is in the form of a lever pivotally mounted near its lower end on a pin 24' connectedt an elevator arm ii. This ratchet rack at its lower end below its pivot is formed with an outwardly projecting v preferably curved linger 3l which rides in a slot 31 in one of the side webs ll of the guard A,

which causes the ratchet rack 35 to pivot in both directions by reason of its contact with the ends of the slot 8l.

The operation of the razor isv as follows: The razor is held in a vertical position with the fingers of one hand grasping the' handle B. andthe thumb and finger of the other hand grasping the h ead Iltoturnthesame. Assumingtheraror to be in closed position, as indicated in Figs. 1, 2, 3. 4. and 'I of the drawing. the operator turns the head l. in a direction to cause the elevator E to move upward by reason ofthe screw-threaded engagement between the rod IC and the sleeve Il.

When the elevator moves upward a necessary distance, the linger 2t of thearm 23 of cap B willensa'acthclug ontheguardmandasthe upward movement of the elevator continues this =11entofthengerwiththelugwillcause the cap to swing on the pivot 24 from its closed position to its open position as indicated by Fig. 5 of the drawing. A portion of this movement of the cap, that is. the extreme of this opening movement, is due to gravity.

When the cap is moved to its open position and the upward movement of the elevator is continued, the linger Si on the ratchet rack 35 will engage the upper end of the slot Il and cause the ratchet rack to pivot in a direction to turn the ratchet pinion 88 and the blade holder 29 a distance of 180 degrees, thus turning the blade holder with the blade therein and reversing the position of the blade in the razor. As this operation is completed the upward movement of the elevator is stopped or tenninated as, for example, by means of the screw.22 in the end of the rod It.

When this operation of opening the razor is completed, the operator turns the head I9 and sleeve I l in a direction opposite to that which he has just previously turned the same to open the razor which causes the rod It and the elevator E to move downwardly in the guard A. As the elevator moves downwardly.' the edge of the arm 23 of cap B is engaged by the lug 2B which exerts a. cam action on the arm 23 which.causes the cap to swing from its open to its closed position and securely clamp the blade C between the cap and the guard.

` As the elevator nears the extremity of its downward movement the finger 36 of the ratchet rack will engage the lower end of the slot 31 in the guardAandwillcausesaidratchet racktoswing in a direction opposite to that formerly described,

` and it`wilibenoted thatbyreason of the fact that the trunnions 2l of the blade holder 2l are in slots $1 of the elevator. the blade holder is ment to the blade holder and thus reset itself for another operation.

While I have illustrated and described what I believe to be a preferred embodiment of my invention, it is obvious that various changes might be made in the general form and arrangement of parts without departing from the invention, hence I do not limit myself to the speciilc details set forth but consider myself at liberty to make such changes and alterations as fairly fall within the spirit and scope of the appended claims.

Iclaim:

1. A safety razor including a guard, a blade holder and a cap adapted to clamp the blade in the holder between the cap and the guard, means for elevating the blade holder and cap, means'for moving the cap from its position above the blade holder, and means for turning the blade holder when the latter is in an elevated position above andparallel with the guard.

J" 2. A safety razor including a-guard, a blade holder and'a cap adapted to clamp the blade in the holder between the cap and the guard, means for elevating the blade holder and cap. means for moving the cap from its position above the blade holder, and means for vturning the blade holder when the latter is in an elevated position above and parallel with the guard, said last mentioned means comprising an elevator' to which the cap and the blade holder are connected, and interengaging means between the cap. blade holder, and guard.

3. A safety razor including a guard, a-blade holder and a cap adapted to clamp the blade in -the holder between the cap and the guard. means for elevating the blade holder and cap, means for moving the cap from its position above the blade holder, and means for turning the blade holder when the latter is in an elevated position above and parallel with the guard, said last mentioned means comprising an elevator to which the cap and the blade holder are connected, and interengaging means between the cap, blade holder, and guard, a threaded rod afilxed to the elevator and movable lin the handle, and a sleeve mounted to turn in the handle and having threaded engagement with the rod.

4. A safety razor including a guard, a handle secured to the guard, an elevator movable in the guard, a cap pivotally connected to the elevator, a blade holder having rotary mounting in the elevator, cooperating means between the guard and cap causing the cap to swing from closed to open position when the elevator is moved in one direction and from open to closed position when the elevator is moved in the opposite direction, and means for turning the blade holder and blade therein through an arc of approximately 180 degrecs as the elevator reaches the extreme of its movement in a direction to open the razor.

5. A safety razor including a guard. a handle secured to the guard, an elevator movable in the guard, a cap pivotally connected to the elevator, a. blade holder having rotary mounting in the elevator, cooperating means between the guard and cap causing the cap to swing from closed to degrees as the elevator reaches the extreme of its movement in a direction to open the razor, said last mentioned means including a ratchet pinion on the blade holder, a pivoted ratchet rack on the elevator engaging the pinion, and means operatively connecting the rack and the guard.

6. A safety razor including a guard, a lhandle secured to the guard. an elevator movable in the guard, a cap pivotally connected to the elevator: a blade holder having rotary mounting in the elevator, cooperating means between the guard and cap causing the cap to swing from closed to open position when the elevator is moved in one direction and from open to closed position when the elevator is moved in the opposite direction, and means for turning the blade holder and blade therein through an arc of approximately 180 degrees as the elevator reaches the extreme of its movement in a direction to open the razor, said last mentioned means including a ratchet pinion on the blade holder, a pivoted ratchet rack on the elevator engaging the pinion, a ilnger on the ratchet rack movable in a slot in the guard and causing the rack to swing in opposite directions when the :linger engages the opposite ends of the rack.

'7. A safety razor including a guard, a handle secured to the guard, an elevator movable in the guard, a cap pivotally connected to the elevator, a blade holder having rotary mounting in the elevator, cooperating means between the guard and cap causing the cap to swing from closed to open position when the elevator is moved in one direction and from open to closed position when u the elevator is moved in the opposite direction,

and means for turning the blade holder and blade therein through an arc of approximately 180 degrees as the elevator reaches the extreme oi' its movement in a direction to open the razor, said last mentioned means including a ratchet pinion on the blade holder, a pivoted ratchet rack on the elevator engaging the pinion, a finger on the ratchet rack movable in a slot in the guard and causing the rack to swing in opposite directions when the finger engages the opposite ends of the rack, said blade holder having a limited vertical movementin the elevator.

8. A safety razor including a guard, a handle secured to the guard, an elevator movable in the guard, a cap pivotally connected to the elevator, a blade holder having rotary mounting in the elevator, cooperating means between the guard and cap causing the cap to swing from closed to open position when the elevator is moved in one direction and from open to closed position when the elevator is moved-in the oppodte direction, and means for turning the blade holder and blade therein through an arc of approximately 180 degrees as the elevator reaches the extreme of its movement in a direction to open the raacr, said last mentioned means including a ratchet pinion on the blade holder, a pivoted ratchet rack on the elevator engaging the pinion, a ilnger on the ratchet rack movable in a slot in the guard and causing the rack to swing in opposite directions when the finger engages the opposite ends of the rack, longitudinal ribs on the blade holder adapted to enter a slot in the blade, and a turnbutton on the blade holder adapted to clamp the blade to the holder.

9. A safety razor including a guard of general inverted channel shape, an elevator movable in the guard, a cap pivotally connected to the elevator, a blade holder having rotary mounting in the elevator, means for moving the elevator in the guard, means for causing the cap to swing out of position above the guard when the blade holder is elevated, and means adapted to turn the blade holder when the elevator approaches the extreme of its upward movement.

10. A safety razor including a guard, a handle affixed to the guard, an elevator movable in the guard, a cap pivotally connected to the elevator, a lug on the guard, a finger on the cap adapted to engage the lug and cause the cap to swing from a position above the guard to a position outside of the guard and vice versa, a blade holder having rotary mounting in the elevator, and means for turning the blade holder when the elevator nears its highest position.

1l. A safety razor including a guard, a. handle aflixed to the guard, an elevator movable in the guard, a cap pivotally connected to the elevator, a lug on the guard, a ilnger on the cap adapted to engage the lug and cause the cap to swing from a position above the guard to a position outside of the guard and vice versa, a blade holder having rotary mounting in the elevator, and means for turning the blade holder when the elevator nears its highest position, a threaded rod amxed to the elevator and projecting into the handle. a sleeve mounted to turn in the handle and having threaded engagement with the rod, and a knob on 'the lower end of the sleeve outside of the handle.

12. A safety razor including a guard, a handle ailixed to the guard, an elevator movable in the guard, a cap pivotally connected to the elevator, a lug on the guard, a ilnger on the cap adapted to engage the lug and cause the cap to swing from a position above the guard to a position outside of the guard and vice versa, a blade holder having rotary mounting in the elevator, and means for turning the blade holder when the elevator nears its highest position, a threaded rod affixed to the elevator and projecting into the handle, a sleeve mounted to turn in the handle and having threaded engagement with the rod, a knob on the lower end of the sleeve outside of the handle, and means for limiting the movement of the elevator.

WILLIAM BLACK.

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