US2079245A - Safety razor - Google Patents

Description

y 1937. s. DALKOWITZ 2,079,245

SAFETY RAZOR Filed Jan. 18, 1934 14 Sheets-Sheet 1 INVENTOR May 4, 1937.

G. DALKOWITZ 2,079,245

SAFETY, RAZOR Filed Jan. 18, 1934 4 Sheets-Sheet 2 INVENTOR 1 dozlfrg/fi rw'h,

NEY

May 4, 1937.

G. DALKOWITZ SAFETY RAZOR F 'iled Jan. 18, 1954' 4 SheetS-Sheet s INVENTOR 60' z gzfialom'liz, BY

ATTORNEY y 9 I s. DALKOWITZ 2,079,245

. SAFETY RA'ZOR Filed-Jan. 18, 1934 4 SheetsSh eet 4 Patented fMay 4, 1937 UNITED STATES PA'il orries SAFETY RAZOR Application January 18, 1934, Serial No. 707,065

14 Claims.

My present invention relates to that class of safety razors in which two clamping members receive a blade therebetween, one of the clamps ing members being so devised as to serve as the guard member and the other member serving as the cap 01 backing member.

In the embodiments herein illustrated, the razor is shown as of a type to receive a double edged blade between the cap and guard member.

In one of its aspects, my invention relates to the provision in a safety razor of the type above mentioned of an arrangement whereby a blade can be conveniently mounted and clamped for shaving purposes and can be released and removed therefrom for cleaning or replacement purposes, without, however, requiring disassembly of the razor parts.

From another aspect, my invention relates to the provision in a razor of the type in which the clamping members are made separable for purposes of inserting and removing one type of blade which may be more or less of a, conventional character, of an arrangement in the razor to take a diilerent character of blade and, which will permit of the placement and removal of this second type of blade without disassembly of the razor parts.

I attain the objectives of the first aspect of my invention byv (a) constructing the cap or cover member of plural parts, and so relating these cap parts that they can be moved to one position for blade clamping and to a second position for blade release and (b) employing therewith a blade having a slot therein sufficientl large to receive therethrough the cap parts when moved to the second aforementioned position to permit of blade placement and removal without disassembly of the razor parts.

Iattain the objectives of the second aspect of my invention by (a) so relating the aforementioned multi-part cap to the other razor parts that the cap can be disassembled therefrom for placement and removal of a second type of blade and (b) providing in a second type of blade: to

a be employed therewith and in one of the razor in the other type, all other features, dimensions and contours of the two types of blades being identical, if it is so desired, one type permitting of blade removal and insertion without disassembly of the razor parts, and the other type requiring it.

In accordance with one embodiment of my invention, the slots in both types of blades to be employed with the razor, are dimensionably predetermined diiferently, however, one from the other for cooperation with alternative means in the razor for blade location, such predetermination for one of the two types being such as to also permit of its placement and replacement without disassembly of the razor parts.

In accordance with a second embodiment of my invention, the means in the blade for cooperation with razor parts for blade location are identical in each of the two types of blades, and

are independent more or less of the dimensions 2 1 and contours of the slots therein, portions of the slots in one of the types serving no function atall in connection with blade location and serving its function only to permit of blade placement and replacement. 7

For the attainment of these objects and such other objects as may hereinafter appear or be pointed out, I have illustrated two embodiments of my invention in the drawings, wherein:

Figure 1 shows one embodiment of my invention in perspective;

Figure 2 is a section taken on line 2-2 of Figure 3;

Figures 2a and 211 show the two types of blades adapted to be used selectively in the razor of Figure 2; I

Figure 3 is a top plan view looking down on the razor of Figure 2;

Figure 4 is a section taken on line fl--4 of Figure 3;

Figure 5 illustrates the manner of using the blade type of Figure 2a;

Figure 6 shows a manner of using the blade type of Figure 2b;

Figure 7 is an exploded view of all the parts that go to make up the razor of Figure 2;

Figure 8 shows the clamping head of a second embodiment;

Figures 9 and 9a show the two types of blades employed selectively in the razor head of Figure 8;

Figure 10 is a perspective showing the employment of the blade of Figure 9;

Figure 11 is a plan view of Figure 10; and

Figure 12 is a perspective view showing employment of the blade of Figure 9a.

Upon viewing Figure 7, it will be observed that the elements comprised within the bracket A 6 when assembled form what I will hereafter refer to as the clamping or cover cap assembly 10 and that the reference character [I is applied to what will hereinafter be referred to as the guard and that the member I2 is applied to what will 10 hereinafter be referred to as a handle member.

The cap is made up generally of two wing members 20 pivotally secured at their lower ends to a central block 2i in any preferred or desired manner as for example by pivot pins 22 passing through ears 23 and into the end faces of the block 2|. In order to permit of a free swinging movement of the wings 25. with reference to the block 2 I, these wings are each cut away as shown at 24 so as to permit the wings which pivot about adjacent axes to be swung from the position of Figure 5 to the position of Figure 6, in end to end relation to form what is in effect, a continuous clamping cap.

I will now describe my arrangement whereby 25 the wings 28 can be manipulated to be moved from their position of Figure 5 to Figure 6, and for this purpose reference will be made to Figures 2, 4, and 7 in which the wings Zii are shown as each provided with the pendent lug 30 the lower 30 end of which is pivoted to levers 3! arranged in overlapping relation, the lower ends of these levers in turn being pivoted to the head 32 at the points 33. This arrangement provides a toggle whereby upon reciprocation of the head 32 35 in an up and down direction, the wings 28 will be given a movement from the position of Figure 5 to that of Figure 6 and-from the full line of Figure 2 to the dotted line of that figure. The head 32 and the slide rod 35 are secured to each other in any preferred or desired manner, as for example, by the pivot pin 36. The rod 35 is in turn reciprocated upon manipulation of the head 38 through the engagement of the threads on the exterior of the upwardly extending pin 39 with the internal threads 3'! formed at the lower end of the rod 35. The head 38 is held to a rotation and against a longitudinal movement by the ring washer Ml engaged in registering depressions formed in the handle shell 4! and in the pin 39.

It will be understood from this description that upon rotation of the head 38, that the rod 35 will be moved one way or the other within the handle member 4! to correspondingly move the head 32 to manipulate the toggle arrangement embodied in the levers 3! to open or close the wings 20 forming the cap member.

The block 2! is shown in detail in Figures 5, 6 and 7, and in effect, comprises two spaced members connected to the upper end of the tube 45 of a size to pass through the opening 50 of the bridge member I l which is threaded externally as to engage the threads 52 formed internally of the upper end of the handle sleeve 4!.

One method of employing the razor contemplates that its cover be manipulated as shown in Figures 2 and 5 and for such method of operation the razor blade of Figure 2a is intended to be employed. This blade has a transverse slot enlarged centrally at 6?) to encompass freely the part 45 of the cover assembly and has extending in opposite directions therefrom, the slot extensions 6! to freely encompass not only the block 2| but also the extreme end portions 23 of the wings 20, extending to opposite sides of the central block 2|. This is shown clearly in Figure 5. The blade can thus be freely removed from the razor parts without disassembly of these razor parts and merely by bringing the wings 2B of the cap to their position of Figure 5.

In Figure 6 I show a further manner of employment of my razor. Here the razor handle member if (not shown) has been manipulated so as to disconnect the threads '52 thereon from the threads 46 on the sleeve 45. The end member 38 has also been manipulated so as to free its threads 39 from the internal threads 3'5 of the member 35. With the parts in this position, the entire cap assembly can be removed as a unit, to permit of the use of the blade of the type of Figure 2b. This blade differs from the blade of Figure 2a only in that the extension slots iii are shorter than the corresponding slots 6| of the blade of Figure 2a and terminate further inwardly of the end walls of the razor blade and are sufiiciently long to be received about the central block 25.

With the cap assembly removed from the other razor part as shown in Figure 6, the blade of Figure 2b is assembled therewith as shown in Figure 6 by bringing the enlargement til in registration with the sleeve 45 and the extensions in registration with the central block 2!, the slots, however, being just suficiently long to clear this block 2i. This is clearly shown in Figure 4 of the drawings, where the portions of the blades to the sides of the extension slots 6| are shown as positioned directly beneath the hinged pintles 23 instead of entirely to the sides thereof as in Figure 5.

It will be observed that the location of the blade is fixed by interengagement of the slots in each type and cover portions. For the type of blade shown in Figure 2b, the cover portion for this purpose is merely the central block 2|. For the type 211, the cover portion for this purpose includes, not only the central block 2!, but also the hinged pintles 23 to the side thereof.

In both types of blades, Figures 2a and 2b, it will be observed that the four walls which define the slot in each keep the blade from shifting in any direction by their engagement with cooperating razor elements, illustrated as formed with the cap member. Such cooperating razor elements can be on a razor part other than the cap member. Furthermore, while it may appear from the drawings that the blade is of the flexible wafer type, and that the razor is of a type to flex it, it will be understood that the flexing is only to a minor extent and wholly incidental to my invention as there is nothing in my invention that calls for or necessitates any flexing of the blade.

In Figures 8 to 11 inclusive, I show a second embodiment of my invention functioning, generally as does the first embodiment of Figures 1 to 7 inclusive and also taking two different types of blades. However, the slots in the blades of the second embodiment do not function for blade location and are therefore not predetermined either as to their contours or dimensions for such purpose. The razor of the second embodiment and both types of blades for use therein are provided with interengaging means for blade location, which however are identical as to and for both types of blades.

I will now proceed to describe this second embodiment.

Upon viewing Figure 8, it will be observed that the guard member 10 is provided, in addition to the two guards 10a, and the depression 10b, with the upstanding pins ll shown as four in number, and preferably symmetrically positioned with reference to both axes of the guard member.

Attention is now invited to the two types of blades employed in connection with this second embodiment of my invention and illustrated in Figures 9 and 9a respectively of the drawings.

The blade of Figure 9 is of the two edged slotted type having the slot enlarged centrally at 72, the extensions to each side thereof being numbered 13. This central slot of the blade of Figure 9 does not perform any function for blade location. The blade of Figure 9 is located by means of the cut-away portions 14 opening into the slot extensions 13. These cut away portions .are so associated, positioned and related as to register with the four pins H which are received therethrough when the blade of Figure 9 is positioned in superposed relation to the guard 10 as is its position in Figure 10. It will be understood that the only thing that determines the location of the blade of Figure 9 is the interengagement between the cut away portions 14 and the pins H. The remaining cut away portions 12 and T3 merely serve to clear the central block therethrough as will be pointed out more particularly hereinafter.

Upon referring to Figure 8 of the drawings, it will be noted that the cap 8|] comprises the central block 8| cut away as shown at 8| to provide a pivotal mounting 83 for the wings 82 forming the multi-part clamping cap. It will r be observed that this structure differs from the arrangement of the first embodiment (see Figure 5) in that the lower end of the wings 82 of the second embodiment terminate-within the length of the central block 80 whereas they terminate beyond. and to opposite {sides of the central block in Figure 5. It will further be observed upon comparing the contours of the wings 82 of the second embodiment with that of the first embodiment, that the wings of the second embodiment of Figure 8 widen or flare out toward the top or free ends, the purpose of which will be pointed out shortly.

Except as pointed out in the preceding paragraph, the cap assembly of Figure 8 is assembled with the handle member and the guard member just as is the cap assembly of Figures 1 to '7 inclusive, namely, by the double engagement of threads 31 and 39 and threads 46 and 52 (see Figures 2, 6 and 7) and for purpose of convenl ience of description, these parts of Figures 2, 6

and 7 have been duplicated in the embodiment of Figures 8, 10, 11 and 12, and in fact, the same reference characters, primed however, have been applied to these duplicated parts where shown in Figures 8 to 12.

The blades of both Figures 9 and 9a are assembled by bringing the cut away parts 14 or 14a. thereof into engagement with the pins H on the bridge. Where the blade of Figure 9 is employed, this can be done only, however, where the cap assembly has been entirely separated from the other razor parts as in Figure 8 because the cap member 82 even in the collapsed condition of the parts, cannot pass through the slots 13, because of the widened flare of the wings 82 toward their outer end.

On the other hand, where it is desired to employ the blade of Figure 9a, it is not necessary to disassemble the razor parts. All that is required is that the end 38 of the handle be manipulated to bring the wings 82 of the cap mem her to the position of Figure 11 whereupon the extra length of the slot extensions 13a will permit the blade to be raised clear of even the widest portions of the wings 82.

The provision of the flare of the wings 82 and of the extra length of slots to. the extension 13a provides a clearance which will eliminate the possibility of the end walls of the slots 13a of the blade catching which possibility is present in the first embodiment. It will be observed upon viewing Figure 5, that the end walls of the slot in the blade may catch beneath the hinge portions 22 of the wings 20.

It will be, observed that the slot in the blade of Figure 2a can be defined as of a length no less than that of the widest portion of the clamping members 20 in the first embodiment, and the slot of the blade of 9a as oil a length no less than that of the widest portion of the clamping members 82 of the second embodiment and the width of each blade as no less than that of the thickness of the two clamping members 29 of the one embodiment or 82 of the other embodiment, as determined by their position as illustrated in Figures 5 and 12 respectively. Where, therefore, the clamping edges are of a length substantially equal to or (greater than the length of the shaving edges, as is the case of the edges 82 in Figure 10, then. the length of the slot of the blade of Figure 9a will be no less than that of the shaving edge.

In Figure 3 I have shown a blade, the shaving edge of which has been purposefully illustrated as longer than that of the clamping edge 20 to make clear that such may be the relation, in which case the length of the slot of the blade of Figure 2a, while longer than the widest part of the clamping members 20, need not be longer than the shaving edges.

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

1. In combination, in a safety razor holder adapted for the reception of blades of two types, both of said blade types having a slot therein, but the length of the slots of one type exceeding that of the slot of the other type, said holder comprising a guard adapted to seat either of said blade types in shaving position, and a cap adapted for cooperating with said guard to clamp either of said blade types against the guard, said cap having mounted thereon a pair of members adapted for relative movement from. an end to end blade clamping relation overlying the blade when it is seated on the guard, into a position of substantial parallelism, and said members and said cap being of such conformation as to pass through the slot of one type of blade but not through that of the other type, when said members are in their parallel position, and means for moving said members from their parallel position to their end to end blade clamping position, and said cap being separably associated with said blade seat, whereby said long slot blade type may be seated on the guard and thereafter clamped in place by bringing said members into their end to end blade clamping relation, and whereby when said cap is separated from said guard the short slot type blade may be seated on said guard and thereafter clamped in place after the cap is again associated with said guard and said members thereof are brought into their end to end blade-clamping position.

2. In combination, in a safety razor holder adapted for the reception of blades of two types, both of said blade types having a slot therein, but the length of the slots of one type exceeding that of the slot of the other type, said holder comprising a guard adapted to seat either of said blade types in shaving position, and a cap adapted for cooperation with said guard to clamp either of said blade types against the guard, said cap having a portion thereof adapted to engage portions of said guard and to engage the edges of the slots of blades of both types so as to locate the position of said blade in relation to the guard, and said cap also having mounted on said slot-engaging portion thereof a pair of members adapted for relative movement from an end to end blade clamping relation overlying the blade when it is seated on the guard, into a position of substantial parallelism, and said members and said slot-engaging portions of said cap adjacent thereto being of such conformation as to pass through the slot of one type of blade but not through that of the other type, when said members are in their parallel position, and means for moving said members from their parallel position to their clamping position, and said cap being separably associated with said guard, whereby said long slot blade type may be seated on the guard and thereafter clamped in place by bringing said members into their end to end relation when said slot-engaging portion is seated on said guard, and whereby when said cap is separated from said guard the short slot type blade may be seated on said guard and thereafter clamped in place after the cap is again associated with said guard and said members thereof are brought into their blade-clamping position.

3. In combination, in a safety razor holder adapted for the reception of blades of two types, both of said blade types having a slot therein, but the length of the slots of one type exceeding that of the slot of the other type, said holder comprising a guard adapted to seat either of said blade types in shaving position, and a cap adapted for cooperation with said guard to clamp either of said blade types against the guard, said cap having a portion thereof adapted to engage portions of said guard and to engage the edges of the slots of blades of both types so as to locate the position of said blade in relation to the guard and said cap also having mounted on said slot-engaging portion thereof a pair of members adapted for relative movement from an end to end blade clamping relation overlying the blade, into a position of substantial parallelism, and said members and said slot-engaging portions of said cap adjacent thereto being of such conformation as to pass through the slot of one type of blade but not through that of the other type, when said members are in their parallel position, and means for moving said members from their parallel position to their clamping position, and said cap being separably associated with said blade seat, whereby said long slot blade type may be seated on the guard and thereafter clamped in place by bringing said members into their end to end relation when said slot-engaging portion is seated on said guard, and whereby when said cap is separated from said guard the short slot type blade may be seated on said guard and thereafter clamped in place after the cap is again associated with said guard and said members thereof are brought into their blade-clamping position, and said members having portions thereof adapted to engage the walls of the slot of the long slot type of blade, but not the walls of the short slot type of blade, for purposes of locating the shaving edge of said blade in relation to the guard.

4. In a holder for a safety razor, a guard, a cap cooperating with said guard to clamp the blade therebetween, said cap being separably associated with said guard and comprising a pair of blade clamping members adapted, when said cap is in normal assembled relation to the guard, to move into a blade clamping position, in which they overlie the blade, or into a position of substantially parallel adjacency at an angle to said blade, and means for moving said members from the blade clamping position to said position of parallelism, whereby a slotted blade may be seated on said guard, without disassociating said cap, by passing said members, when in their position of parallelism, through the slot of said blade, and whereby said blade may thereafter be clamped on said seat by moving said members into their blade clamping position, and whereby, if said cap is first disassociated from said guard, blades the slots of which are not adapted to receive said members therethrough, may be clamped between said cap and guard, when they are inserted between the cap and the guard after the cap has been disassociated from said guard.

5. A holder for a safety razor constructed as defined in claim 4, in which the cap is provided with blade locating portions adapted to engage complementary portions on a blade so as to lo cate the shaving edges of the blade in relation to said guard.

6. A holder for a safety razor constructed as defined in claim 4, in which the cap and the members carried thereby are provided with blade 10- cating portions adapted to engage complementary portions of a blade so as to locate the shaving edges of the blade in relation to said guard.

A holder for a safety razor constructed as defined in claim 4, in which said cap comprises a blade locating portion adapted to engage the walls of the slot in a slotted blade so as to locate the shaving edges of said blade in relation to said guard.

8. A holder for a safety razor constructed as defined in claim 4, in which said cap and the members carried thereby comprise blade locating portions adapted to engage the walls of the slot in a slotted blade so as to locate the shaving edges of said blade in relation to said guard.

9. A holder for a safety razor constructed as defined in claim 4, in which the guard is provided with blade locating means adapted to cooperate with complementary means on a blade to locate the blade in relation to said guard.

10. In combination, in a safety razor holder adapted for the reception of blades of two types, both of said blade types having a slot therein, but the length of the slots of one type exceeding that of the slot of the other type, said holder comprising a guard adapted to seat either of said blade types in shaving position, and a cap adapted for cooperating with said guard to clamp either of said blade types against the guard, said cap having mounted thereon a pair of members adapted for relative movement from an expanded blade clamping relation overlying the blade when it is seated on the guard, into a restricted position, and said members and said cap being of such conformation as to pass through the slot of one type of blade but not through that of the other type, when said members are in their restricted position, and means for moving said members from their restricted position to their expanded blade clamping position, and said cap being separabl'y associated with said blade seat, whereby said long slot blade type may be seated on the guard and thereafter clamped in place by bringing said members into their expanded blade clamping relation, and whereby when said cap is separated from said guard the short slot type blade may be seated on said guard and thereafter clamped in place after the cap is again associated with said guard and said members thereof are brought into their expanded blade-clamping position.

11. In a safety razor having a guard for seating a blade thereon, and clamping means for holding the blade in position on the guard, and said clamping means comprising a support removably positioned in fixed relation to the guard: a pair of members carried on said support on parallel and adjacent hinges and adapted to pivot about said hinges into an end to end relation or into a position facing each other, and means for moving said members in relation to said support,

for holding the blade in position on the guard,

and said clamping means comprising a support remo-vably positioned in fixed relation to the guard: a pair of members carried on said support on parallel and adjacent hinges and adapted to pivot about said hinges into an end to end relation or into a position facing each other, and

means for moving said members in relation to said support, said means comprising a pair of levers, each'of said levers having one of its ends pivoted to one of said members, and its other end pivoted to an element mounted for longitudinal movement in relation to said support, the pivot points of said levers being on said ele-- ment and being spaced from each other, and said levers being positioned in overlapping relation.

13. In a safety razor having a guard for seating a blade thereon, and clamping means for holding the blade in position on the guard, and said clamping means comprising a support removably positioned in fixed relation to the guard: a pair of members carried on said support on parallel and adjacent hinges and adapted to pivot about said hinges into an end to end relation or into a position facing each other, and means for moving said members in relation to said support, said means comprising a pair of levers pivoted to said members and to an element mounted for longitudinal movement in relation to said support, and a control member pivotally connected to said element.

14. In a safety razor having a guard for seating a blade thereon, and clamping means for holding the blade in position on the guard, and said clamping means comprising a support removably positioned in fixed relation to the guard: a pair of members carried on said support on parallel and adjacent hinges and adapted to pivot about said hinges into an end to end relation or into a position facing each other, and toggle means for moving said members in relation to said support, said means including a pair of overlapping levers pivoted to an element mounted for longitudinal movement in relation to said support, and a control member pivotally connected to said element.

GODFREY DALKOWITZ.

Images