My present invention relates to safety razors of the type wherein the blade is pressed against fixed front stops, which allows adjustment of its shaving edge to a predetermined position with respect to the razor guard, to insure a proper shaving action notwithstanding expected dimensional variations in blades employed.

The invention aims primarily to provide a razor blade holder having special features of construction by use of which the above-mentioned adjustment of the blade with reference to the stops may be carried out with greater effectiveness and certainty, certain additional features of construction being preferably employed in the blade to insure that during assembly it will be preliminarily positioned within the proper range of action of the mechanism employed to press it against the stops.

The invention also includes a novel blade holder adapted to cooperate with a blade of the nature above referred to, to press the blade against the stops as aforesaid.

In Patent #1,739,280, granted to Marcus B. Behrman, on December 10, 1929, entitled “Safety razor” there is disclosed a construction by the use of which the above-mentioned adjustment of the blade with reference to the stops may be carried out with greater effectiveness and certainty; also a blade holder adapted to cooperate with such a blade to press it against the stops as aforesaid.

The present invention aims primarily to provide a superior blade holder for properly positioning a blade of the above type with respect to the stops above mentioned, particularly in respect to the parts of the holder which engage the blade to move it against the stops, and the mode of operation of such parts.

For the attainment of the foregoing objects and such other objects as may hereinafter appear or be pointed out, I have illustrated an embodiment of my invention in the accompanying drawings, wherein—

Figure 1 is a perspective view of a safety razor constructed in accordance with my present invention, the cover being shown open;

Figure 2 is a view similar to Figure 1, with the cover and an accommodated blade shown in final shaving relationship;

Figure 3 is a vertical cross-section of my razor taken substantially along the line 3—3 of Figure 1 and showing the blade in position and the cover open;

Figures 4 and 5 are views similar to Figure 3, showing the parts in different relationships and positions;

Figure 6 is a fragmentary cross-sectional view taken substantially along the line 6—6 of Figure 1, showing the blade in position and the cover open, this view corresponding to the relationship of parts in Figure 3;

Figures 7 and 8 are views similar to Figure 6, showing the parts in different relationships and positions and corresponding, respectively, to the positions of the parts in Figures 4 and 5;

Figure 9 is a horizontal cross-sectional view taken substantially along the line 9—9 of Figure 5;

Figure 10 shows a type of single-edged blade to be employed with my razor;

Figure 11 shows a type of double-edged blade to be employed with my razor; and

Figure 12 is a perspective view of certain portions of the mechanism.

Before proceeding to describe the details of my present invention, I will premise that the razor herein illustrated and described is of the general type in which there is provided a handle member 14, upon which is carried a saddle or blade seat 20, the latter having a guard edge or guard teeth 22 at its front or shaving edge. Upstanding lugs or abutments 23 serve as front blade stops and are positioned at the opposite ends of the guard edge 22. These front stops are intended to define a line to which the shaving edge of the razor blade is to be brought for purposes of maximum shaving efficiency and smoothness.

A cover member 15 is pivotally associated with the blade seat so as to permit it to be swung from the open or blade-releasing position of Figure 1 into the closed or blade-clamping position of Figure 2.

The blade seat 20 is provided on its upper face with an upstanding projection or lug 19, positioned a substantial distance to the rear of the line along which the front stops 23 are arranged, and in the illustrated embodiment the projection 19 takes a generally oblong or elliptical form with the longer dimension extending transversely of the blade seat 20, i. e., at right angles to the line of the guard edge 22. The lug 19 preferably has its upper surface forwardly beveled, as shown most clearly in Figures 3-5.

The blade seat 20 is also provided with the cut-out portions 54 and 55 arranged on its side edges and in substantial alignment with the lug 19, the purpose of which will be more fully described hereinafter.

The razor features thus far described are disclosed in the aforementioned earlier Behrman Patent Number 1,739,280 as are also the blades of Figures 10 and 11 adapted to be employed therewith.

The blade 16 of Figure 10 is of the single-edged type, and has been illustrated with a reinforcement 18 at its rear edge. Adjacent to the side edges of the blade are the slots or recesses 62 and 63, which provide the abutment shoulders 60 and 61, respectively, to the rear of the shaving edge 24. Centrally of the blade and running generally transversely of the cutting edge 24 is the elongated slot 21 defined by the front and rear walls 25 and 26 and the side guiding walls 29.

In Figure 11, I have illustrated a double-edged blade which may be employed with my present device, my invention permitting the selective employment of either a single-edged blade of the character of Figure 10 or a double-edged blade of the character of Figure 11 without in any way requiring changes or adjustments of any kind. The blade 66 is provided with the opposite cutting edges 67 and 68. The side edges are cut away to provide the slots or recesses 69 and 70. The slots 69 and 70 define not only the abutment shoulders 71 and 72 positioned rearwardly of the cutting edge 67, but also the abutment shoulders 73 and 74 positioned rearwardly with respect to the cutting edge 68. The two pairs of abutment shoulders thus provided are adapted to cooperate, respectively, with the depending members 44 of the cover 15, depending upon the shaving edge which is being used. For example, if the edge 67 is the active one, the abutment shoulders 71 and 72 will be in cooperative relationship to the advancing members 44, and when the razor blade is reversed so as to bring the other edge 68 into active position, the abutment shoulders 73 and 74 will be the operative shoulders for the same purpose.

The recesses 69 and 70 are so arranged that the abutment shoulders of each pair are in alignment and at the same distance from the adjacent cutting edge. In this way, the blade may not only be reversed to bring either cutting edge into operative position, but may be reversed sideways so as to turn the blade upside-down on the blade seat.

The opening 75, corresponding to the opening 21 of Figure 10, is defined by the end walls 76 and 77 and the side guiding walls 78. The features of this opening are in all respects similar to those of the opening 21, except that in the latter case the distance from the end edge 25 to the cutting edge 24 was of primary importance and the particular location of the rear edge 26 was relatively immaterial; whereas, in the blade of Figure 11 the slot or opening 75 is so arranged that the distance from the end 76 to the cutting edge 67 is the same as that from the end 77 to the cutting edge 68.

In accordance with my present invention, the cover member 15 is provided with the lugs or members 44 projecting downwardly therefrom at oppositely positioned points adjacent to the side edges 52 and 53 and intermediate the front and rear of the cover 15. These lugs 44 are preferably rigid with the cover 15, and as the latter is given a swinging movement from the position of Figure 1 to the position of Figure 2, the front edge 50 of the cover is given both a downward and a forward movement, whereby the lugs 44 are caused to engage in the recesses 62 and 63 of the blade of Figure 10, for example. This results in causing an advance of the shaving edge 24 against the front stops 23, and this procedure is accomplished by an arrangement to be more fully described.

Upon referring to Figures 3-5, it will be noted that toward the rear of the blade seat 20, and on the under-surface thereof, I have provided a longitudinal slot or grooveway 27 within which is journaled the pivot pin 28 (see Figure 12). The opposite ends of the pivot pin 28 are provided with cranks or links 30 and 31. The link 30 is provided with an outwardly disposed journal or crank pin 32 which fits snugly and rotatably within a suitably prepared opening in the side wall 52 of the cover, and the link 31 is similarly provided with a small journal or pin 33 which fits into a suitably prepared opening in the side wall 53 of the cover.

I will also point out that the side wall 52 of the cover is provided with a ridge 56 slightly in advance of the opening which receives the pin 32, and the side wall 53 is provided with a similar ridge 57. The forward edge 58 of the link 30 bears against the ridge 56 whenever the cover 15 is open or not completely closed and advanced. The same is true with respect to the forward edge 59 of the link 31, together with the ridge 57, as shown most clearly in Figures 6 and 7.

Associated with the pivot pin 28 is a pinion, and in the illustrated form I have shown the provision of such a pinion by merely providing suitable grooves in a mid-portion of the pin 28. The formation of these grooves is shown most clearly in Figure 12, and the pinion formed thereby will hereinafter be referred, to by the reference numeral 34.

Mounted beneath the seat 20 is a rack 35 which engages the pinion 34 and is adapted to reciprocate backwardly and forwardly with respect to the device as a whole. The rack and the mechanism presently to be described are suitably mounted within the upper hollow section 36 forming part of the handle 14, so that the major portion of the mechanism is thus totally concealed and protected. The rack 35, however, extends outwardly both at the front and rear through suitably prepared openings in the portion 36.

The rack 35 is provided on its under-portion with an inclined cam surface 37, as shown most clearly in Figures 3-5 and Figure 12. The cam surface 37 is preferably provided on the forward edge of a downwardly projecting lug or the like, and between the rear of this lug and the rear wall of the handle portion 36 is a small compression spring 38 which tends constantly to urge the rack 35 forwardly, thereby urging the cover 15 normally into the position of Figure 1.

For causing the rack 35 to reciprocate, I have illustratively shown the pin 39, extending upwardly through the hollow handle 14 and provided at its upper end with the conical cam portion 40 adapted to bear upwardly against the surface 37. The upward movement of the pin 39, by rotation of the control member or grip 46 is effected as shown most clearly in Figures 3-5, wherein it is to be noted that the pin 39 is provided with the external threads at 41, in engagement with internal threads 42 in the upper part of the handle member 14.

Any suitable means may be provided for limiting the downward movement of the pin 39. I have illustratively shown the upper portion thereof provided with the collar 64. During the downward movement of the pin 39, the collar 64 encounters the shoulder 65 provided at the upper portion of the handle member 14, and this limits the downward movement of the pin 39.

In the illustrated form, I have shown the housing or handle portion 36 screw-threaded onto the upper portion of the handle member 14, and in this way it will be seen that the handle in its entirety is made up of the uppermost section 36 together with the hollow portion 14. When the razor is used, the control member 46 also forms part of the handle, and it will be understood that although this control member or grip portion 46 is rotatable to lift and lower the pin 39, it is not detachable and is not intended to separate at any time during the employment of the razor.

The operation of the device is most clearly illustrated in Figures 3-8. With the cover 15 thrown back in open position, as shown in Figures 1, 3, and 6, it is a comparatively simple matter for the user to apply a blade of the character illustrated in either Figures 10 or 11 to the blade seat 20. Assuming the blade of Figure 11 to be used, and assuming the cutting-edge 67 to be the active one, the loose engagement of the recess 75 over the projection 19 positions the blade 66 approximately centrally and prevents it from falling off. It is thereafter necessary for the user merely to rotate the control member 46. This advances the pin 39 and the cam 40 upwardly against the cam surface 37 and initiates a rearward movement of the rack 35. During such rearward movement, the pinion 34 is moved in a counterclockwise direction as viewed in Figures 3-8. During the initial rotation of the pinion 34, the cover is caused to swing downwardly onto the seat from the positions of Figures 3 and 6 into those of Figures 4 and 7, respectively. The blade-engaging members 44 thus enter the respective cut-outs or recesses 69 and 70 and engage the abutment shoulders 71 and 72, the members 44 passing downwardly into the cut-outs 54 and 55 of the blade seat 20 but being completely out of engagement with the blade seat 20.

During a further adjustment of the member 46 and a consequent continuation of the rearward movement of the rack 35, the cover 15 is caused to advance along the seat 20 in a substantially edgewise manner from the positions of Figures 4 and 7 to those of Figures 5 and 8, respectively. During this edgewise movement, it is to be noted that the front edges 58 and 59 of the links 30 and 31 move away from the ridges 56 and 57, respectively; or, rather, the ridges move forwardly away from the edges 58 and 59.

This edgewise advancement of the cover along the seat causes a similar advancement of the blade 66 and forces the operative cutting edge 67 against the abutments or blade stops 23.

The last portion of the rearward movement of the rack 35 accomplishes a still further function by virtue of the fact that the rear end 79 of the rack 35, constituting a tongue or locking element, moves into a position underlying the lower end of the rear wall 51 of the cover 15, as shown most clearly in Figure 5. This locks the cover against a reopening thereof.

The device is then ready for use in the usual manner, and when it is desired again to remove the blade, either for purposes of cleaning or replacement, it is merely necessary to adjust the control member 46 in the opposite direction. This withdraws the cam 40 and allows the spring 38 to force the rack 35 forwardly. During the initial forward movement, the tongue 79 moves away from beneath the rear edge of the cover 15, and the latter moves rearwardly along the seat into the positions of Figures 4 and 7. This brings the ridges 56 and 57 into abutment with the forward edges 58 and 59 of the links 30 and 31; and during the further adjustment of the control member 46 and the consequent further forward return of the rack 35, the cover is swung upwardly into the open positions of Figures 1, 3, and 6. The blade may then be shaken out by turning the device upside-down, or it may be lifted out by grasping the lateral edges thereof.

It will be obvious from the foregoing that the operation of the device is the same whether a single or double-edged blade is employed. In either case, the rear or inoperative edge is fully protected and does not come into contact with any portions of the device whatsoever. Thus, where a double-edged blade is employed, the rear cutting edge is fully protected against mutilation by contact with the cover, and it is also completely shielded so that it can do no possible harm to the user.

It will thus be seen that my present device is one of extreme simplicity both from the standpoint of manufacture and the standpoint of use. It is utterly reliable and devoid of any possibility of jamming or similar annoyance. It is neat and attractive in appearance since none of the mechanism is visible, and its operation is highly efficient because of the fact that one single and continuous manipulation of a single control member accomplishes all the necessary functions for engaging, covering, advancing, and locking the blade in proper position.

It is further to be noted that the device is of such a character that a double-edged blade may be used where desired. The rear or inoperative edge serves no function whatsoever during the advancement of the operative edge, and it is efficiently enclosed and protected and free of any contact therewith.

It will thus be obvious that changes in the details herein described and illustrated for the purpose of explaining the nature of my invention may be made by those skilled in the art without departing from the spirit and scope of the invention as expressed in the appended claims. It is therefore intended that these details be interpreted as illustrative, and not in a limiting sense.

This application is a continuation of my application Serial Number 388,690 filed on August 27, 1929, and allowed on June 30, 1930.

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

1. In a safety razor, a blade seat adapted to receive a recessed blade and provided with a guard edge with blade stops thereon, a cover pivotally associated with the seat, a blade-engaging member carried by the cover and adapted to pass through the blade when the cover is closed, an adjustable control member, and means operable upon adjustment of said control member for pivoting the cover onto the seat and also advancing the cover along the seat, whereby the blade will be simultaneously covered and engaged and thereupon advanced against said stops.

2. In a safety razor, a blade seat adapted to receive a blade and provided with a guard edge with blade stops thereon, a cover pivotally associated with the seat opposite to the guard edge, said cover having a rear overhanging edge, blade-engaging means carried by the cover, an adjustable control member, and means operable upon adjustment of the control member for first pivoting the cover onto the seat, then advancing the cover along the seat, and finally locking the cover to the seat, whereby the blade will be covered, engaged, advanced against said stops, and locked in proper position; said means including a movable tongue adapted to engage beneath said rear overhanging edge.

3. In a safety razor, a blade seat adapted to receive a recessed blade and provided with a guard edge with blade stops thereon, a cover pivotally associated with the seat at the rear thereof, a blade-engaging member carried by the cover and adapted to enter said blade recess when the cover is closed, an adjustable control member, and means operable upon adjustment of said control member for pivoting the cover onto the seat, then advancing the cover along the seat, and finally locking the cover in advanced position, whereby the blade will be covered, positively engaged, advanced against said stops, and locked in advanced position.

4. In a safety razor, a blade seat having a pair of openings therein and adapted to receive a blade having a pair of similarly positioned recesses and an aperture, a guard edge on said seat and provided with blade stops, a projection on the seat for engagement within said blade aperture for preliminarily locating the blade upon the seat with the blade recesses in substantial registry with the openings in the blade seat, a pair of blade-engaging members movable onto the seat and adapted to pass through said recesses, respectively, and thence through said openings in the blade seat, an adjustable control member, and means operable upon adjustment of said control member for causing the blade-engaging members to engage the preliminarily located blade and thereupon advance the latter against said stops.

5. In a safety razor, a blade seat, a cover pivotally associated therewith, an adjustable control member, and means operable upon adjustment of said control member for pivoting the cover into closed position, said means comprising a pinion carried by the cover, a reciprocable rack engaging with said pinion, and means for reciprocating said rack.

6. In a safety razor, a blade seat, a cover pivotally associated therewith, an adjustable control member, and means operable upon adjustment of said control member for pivoting the cover into closed position; said means comprising a pinion carried by the cover, a reciprocable rack engaging with said pinion, a spring urging the rack in a direction wherein the cover is open, and means for shifting the rack against the action of said spring.

7. In a safety razor, a blade seat, a cover pivotally associated therewith, an adjustable control member, and means operable upon adjustment of said control member for pivoting the cover into closed position; said means comprising a pinion carried by the cover, a reciprocable rack engaging with said pinion and having a cam surface, and a cam engaging said surface for reciprocating said rack.

8. In a safety razor, a blade seat, a cover pivotally associated therewith and provided with blade-engaging means, an adjustable control member, and means operable upon adjustment of said control member for pivoting the cover and also advancing it along the seat; said means comprising a pivot pin journaled in the seat and articulated to the cover, a pinion on said pivot pin, and a reciprocable rack engaging said pinion.

9. In a safety razor, a blade seat, a cover pivotally associated therewith and provided with blade-engaging means, an adjustable control member, and means operable upon adjustment of said control member for pivoting the cover and also advancing it along the seat; said means comprising a pivot pin journaled in the seat, a link attached at one end to said pin and pivoted at the other end to said cover, a pinion on said pivot pin, and a reciprocable rack engaging said pinion.

10. In a safety razor, a blade seat, a cover pivotally associated therewith and provided with blade-engaging means, an adjustable control member, and means operable upon adjustment of said control member for pivoting the cover, advancing the cover along the seat, and locking the cover to the seat; said means comprising a pivot pin journaled in the seat and articulated to the cover, a pinion on said pivot pin, and a reciprocable rack engaging said pinion and provided with a tongue which positions itself beneath the rear of the cover after the latter is closed and advanced.

11. In a safety razor, a blade seat having a longitudinal slot, a cover pivotally associated therewith and provided with blade-engaging means, an adjustable control member, and means operable upon adjustment of the control member for pivoting the cover onto the seat, advancing the cover along the seat, and locking the cover closed; said means comprising a pivot pin journaled in said slot, a link joining the pivot pin and the cover, a pinion on said pin, a rack engaging said pinion and mounted beneath the seat for backward and forward reciprocation, a spring urging the rack forwardly to open the cover, and cam means for shifting the rack rearwardly against the action of the spring to pivot the cover closed and advance the same, the rear end of the rack constituting a tongue which positions itself beneath the rear of the cover after the latter is closed and advanced.

12. In a safety razor, a blade seat adapted to receive a blade and provided with a guard edge with blade stops thereon, a cover movable onto the seat, a blade-engaging member carried by said cover, an adjustable control member, and means operable upon adjustment of said control member for closing the cover onto the seat and thereupon advancing the cover along the seat, whereby the blade will be simultaneously covered and engaged and thereupon advanced against said stops.

13. In a safety razor, a blade seat adapted to receive a blade and provided with a guard edge with blade stops thereon, a cover movable onto the seat, blade-engaging means carried by said cover, an adjustable control member, and means operable by a single continuous adjustment of said control member for first closing the cover onto the seat, thereupon advancing the cover along the seat, whereby the blade will be covered, engaged, and advanced against said stops, and finally locking the cover against re-opening thereof.

14. In a safety razor, a blade seat adapted to receive a blade with an aperture therein and provided with a guard edge with blade stops thereon, a projection on the seat for engagement within said blade aperture for preliminarily locating the blade in approximate position upon the seat, a blade-engaging member movable onto the seat, an adjustable control member, and means operable upon adjustment of said control member for causing the blade-engaging member to engage the preliminarily located blade and thereupon advance the latter against said stops.

15. In a safety razor, a blade seat adapted to receive a blade whose lateral edges are provided with recesses, a guard edge with blade stops on said seat, a pair of blade-engaging members movable onto the seat and adapted to pass through said recesses, respectively, an adjustable control member, and means operable upon adjustment of the control member for causing the blade-engaging members to engage the blade on the seat and thereupon advance the blade against said stops.

16. In a safety razor, a blade seat having a slot therein, a cover pivotally associated therewith, an adjustable control member, and means operable upon adjustment of said control member for pivoting the cover into closed position; said means comprising a pinion carried by the cover and positioned in said slot, a reciprocable rack beneath said seat and engaging with said pinion, and means for reciprocating said rack.

17. In a safety razor, a blade seat, a cover pivotally associated therewith and provided with blade-engaging means, an adjustable control member, and means operable upon adjustment of said control member for pivoting the cover and also advancing it along the seat; said means comprising a pivot pin journaled in the seat, a link fixed to the pin and having its free end pivoted to the cover above said pin, and means for rotating said pivot pin to swing said free end.

18. A safety razor comprising a blade-receiving seat having a guard edge provided with blade stops, a cover for said seat, a pivotal mounting for said cover carried from the seat, said pivotal mounting having means for shifting said cover along the seat, whereby the cover can be given a movement first down upon the seat and then forwardly along the seat in the direction of the front stops.

19. In a safety razor, a blade-receiving seat provided with a guard edge and front stops and side cut-outs and adapted to receive a blade thereon with abutment shoulders in registration with the side cut-outs, a blade clamping member provided with oppositely positioned, downwardly directed, relatively rigid blade-engaging members, means on said razor for pivotally and shiftably moving and actuating said clamping member, whereby when the clamping member is given a movement down upon the seat and therealong, the downwardly directed members will engage with the abutment shoulders on the blade to advance the blade.

20. In a safety razor, a blade-receiving seat provided with a guard edge and front stops and side cut-outs and adapted to receive a blade thereon with abutment shoulders in registration with the side cut-outs, a blade clamping member provided with oppositely positioned, downwardly directed, relatively rigid blade-engaging members positioned intermediate of the rear and front of the clamping member, means on said razor for supporting and actuating said clamping member, whereby when the clamping member is given a movement down upon the seat and therealong, the downwardly directed members will engage with the abutment shoulders on the blade to advance the blade.

21. A safety razor comprising a blade seat having a guard edge provided with blade stops, said seat being adapted to receive a blade thereon, a cover for said seat and blade and mounted on said seat for pivotal movement with respect thereto, and a unitary control means for pivoting said cover onto said seat to cover the blade and also moving the cover bodily along said seat.

22. A safety razor, comprising a blade seat having a guard edge provided with blade stops, said seat being adapted to receive a blade thereon, a cover for said seat and blade and mounted on said seat for pivotal movement with respect thereto, a pivot for said cover, and means for swinging said cover upon said pivot and also advancing said pivot bodily along said blade seat.

23. A safety razor comprising a blade seat having a guard edge provided with blade stops, said seat being adapted to receive a blade thereon, means for clamping a blade on said seat, a control member, and means operable by said control member for moving the damping member first into blade-clamping position and then along said seat to advance said blade.

24. A safety razor comprising a blade seat having a guard edge provided with blade stops, said seat being adapted to receive a blade thereon, a cover for said seat and blade, a handle for said razor, a control member carried by said handle, and means operable by said control member for moving the cover first onto said seat to cover said blade and then along said seat to advance said blade.

25. A safety razor comprising a blade seat having a guard edge provided with blade stops, said seat being adapted to receive a blade thereon, a cover for said seat and blade, a handle for said razor, a control member carried by said handle, and means operable by said control member during a single continuous manipulation of said member for moving the cover onto said seat and blade and also along said seat.

26. A safety razor comprising a blade seat having a guard edge provided with blade stops, a blade having a cutting edge and abutment shoulders rearwardly of said cutting edge, a cover for said seat and blade and provided with means for engaging said abutment shoulders, and a unitary control means for moving said cover onto the seat and into engagement with the abutment shoulders of the blade, and also along said seat to advance said blade.

27. A safety razor comprising a blade seat having a guard edge provided with blade stops, a blade having a cutting edge and abutment shoulders rearwardly of said cutting edge, a cover for said seat and blade and provided with means for engaging said abutment shoulders, means for moving said cover first onto said seat and into engagement with said blade and then along said seat to advance said blade, and a positioning lug carried by said blade seat for engaging said blade to hold the latter in approximate preliminary position prior to the engagement thereof by said cover.

28. A safety razor comprising a blade seat, a clamping member for clamping the blade on the seat, means for moving the clamping member onto the seat, and means automatically operable during the manipulation of the said first-mentioned means for locking said clamping member on said seat.

29. A safety razor comprising a blade seat, a clamping member for clamping the blade on the seat, means for moving the clamping member onto the seat, and means automatically operable during the manipulation of the said first-mentioned means for directly engaging said clamping member to lock the latter in its clamping relation on said seat.

30. A safety razor comprising a blade seat, a handle, a clamping member for clamping the blade on the seat, means carried by the handle for moving the clamping member onto the seat, and means automatically operable during the manipulation of the said first-mentioned means for directly engaging said clamping member to lock the latter on said seat.

31. A safety razor comprising a blade seat having a guard edge provided with blade stops, a cover for said seat, a handle, a control member carried by said handle, means operable by said member, for moving said cover onto said seat, and means automatically operable during manipulation of said control member for directly engaging said cover to lock the latter on said seat.

32. A safety razor comprising a blade seat having a guard edge provided with blade stops, a cover for said seat, a handle, a control member carried by said handle, means operable by manipulation of said member for moving the cover downwardly onto said seat, a locking element movable into direct engagement with said cover, and means automatically operable during manipulation of said control member for moving said locking-element into engagement with said cover to lock the latter upon completion of its downward movement onto said seat.

33. A safety razor comprising a blade seat having a guard edge provided with blade stops, and a positioning lug behind said guard edge, a blade having a cutting edge and abutment shoulers rearwardly of said cutting edge, said blade having an aperture in the midportion thereof adapted to engage over said positioning lug, a cover pivotally and shiftably mounted on said blade seat and provided with rigid blade-engaging portions adapted to engage said abutment shoulders when the cover is brought downwardly upon the seat, a control member, and means operable by a single continuous adjustment of said control member for moving said cover downwardly onto the seat and thereafter along said seat, whereby said blade-engaging portions will engage with said abutment shoulders, and whereby the blade will thereupon be advanced along said seat toward said guard edge to press the cutting edge of the blade against said blade stops.

34. A safety razor comprising a blade seat having a guard edge provided with blade stops, said seat having a positioning lug behind said guard edge, and a pair of lateral cut-outs in alignment with said lug, a wafer-type blade having a cutting edge adapted to overlie said guard edge and a medial aperture adapted to engage over said positioning lug, said blade having a pair of lateral recesses which define abutment shoulders rearwardly of-the cutting edge, the lateral recesses of the blade being in substantial alignment with the medial aperture therein, a cover pivoted to said blade seat and provided with a pair of depending, non-resilient, blade-engaging portions adapted to pass downwardly through the lateral recesses in the blade and through the lateral cut-outs in the blade seat, a control member, and means operable by manipulation of said control member for first pivoting the cover downwardly upon the seat and then advancing the cover bodily toward the guard edge, whereby said blade-engaging portions will enter said lateral recesses in the blade when the cover is brought downwardly, and whereby said portions will thereupon engage said abutment shoulders to advance the blade toward the guard edge when the cover is moved along the seat.

35. A safety razor comprising a blade seat having a guard edge provided with blade stops, a cover pivotally mounted upon said seat at the rear thereof, a shiftable locking-element mounted beneath the seat, and means for shifting said element rearwardly into direct engagement with the rear edge of the cover when the latter is pivoted downwardly onto said seat, whereby said cover will thereby be locked down upon the seat.

In witness whereof, I have hereunto signed my name.

Godfrey Dalkowitz.