US2039575A - Razor guard - Google Patents

Description

3 9 319360 A. WINTERKORN 2,639,575

RAZOR GUARD Filed April 25, 1955 Patented May 5, 1936 UNITED STATES PATENT OFFICE RAZOR GUARD Al e w n rk Co umbus O Application April 23, 1935, SerialNo. 17,816

'7 Claims. (01. 30:79,)

This invention relates to guard attachments for razors and among the objects of. the invention are: to provide a guard for the blades of standard razors by which the protecting edges of theguard may be adjusted to assume desired related positions tothe cutting edge of the razor blade and topermit this relationship to be maintained throughout the life of the razor blade, despite variations in the form of its cutting edge due to the efiects of honing, stropping and wear; the provision of a guard which is forced by positive spring pressure toward theback edge of the razor blade and wherein adjusting screws are pro .vided in connection with the guard to counteract the spring pressure to maintain the desired counter-relation betweenthe protecting edges of the guard and the cutting edge of the razor blade; in the provision of arazor guard which will be simple to apply and adjust with respect to the associated razorblade, and moreover, one which may be conveniently removed to avoidinterference with the normal washing or stropping of the associated blade.

Fo a u the under a d n of e en n, reference is to be had to the following description .and' he acc m a ying drawin ere n:

F s a pe pe v vi w 3a tan a p of;razor provided withthe guard comprising the present invention;

Fig. 2 is a view in side elevation of the guard .operatively mounted on the blade of a razor;

Fig. 3 is a transverse verticalsectional view on the line III--III of Fig. '2;

Fig. 4 is a similar view on the plane indicated by the line I VIV of Fig.2;

Fig. 5 is a horizontal and longitudinal sectional view on'the line VV of Fig. 2

Fig. 6 is a view in side elevation of a slightly modified form of my invention;

Fig. 7 is a vertical transverse sectional view on the line VII-VII of Fig. 6.

Referring more particularly to the drawing, the numeral I designates the blade of a standard type straight edge razor, the blade being provided with the usual handle extension 2 which ispivotally connected as at 3 with a handle .4, and it is to a razor of this type that the guard 5, comprising thepresent invention, is adapted to be applied as a safety appliance to protect the face during shaving operations.

I The guard comprises a metallic casing in which the blade I is received,,and in this instance the casing includes side walls 6 and I arranged adjacent to the sides of the blade I, the wall "I terminating-at its upper edge in a horizontal top wall -8 with which. are formed hinges 9, providing for relative separation between the walls 6 and I to facilitate removal of the casing from the razor blade. The loweredges II! of the walls6 and I are provided with thickened guard ribs II which are-adapted to be so correlated with the cutting edge. H of the blade I as to prevent the latter from cuttingthe face during shaving, the ribs I I being substantially fully coextensive with the length of the edge I2.

Toprevent undue separation of the walls 6 and LT and to. lock the same in holding engagement with. the sides of the blade I, the wall 1 has pivotally connected with one end thereof a latch I3, the latter being provided with a horizontal edge I4 arranged to overlie the top wall 8. The edge. I4, in turn, is formed with a depending resilient lip .I5 disposed for engagement with the inclined outer surface of a bearing pad I6, formed in connection with the medial portion of the wall 6. When the latch I3 occupies the position disclosed in Figs. 1, 2 and 3, the resilient lip I5frictionally presses upon the inclined outer surface of the padIB and thereby holds the walls. 6 and I in firm engagement with the sides of the razor blade. By lifting the latch I3 and rocking the sameabout its pivotal connection H with the wall 1, the. lip I5 may be raised soas to clear the wall 6', thereby permitting of the ready separation of the walls 6 and I through the hinge connections 9.

To hold the guard ribs II in proper protecting relationship with the cutting edge I2 of the blade I,.the.b-ack of said blade, contiguous to the handle extensionZ, is provided with a frictionally mounted clamp I8, from which projects in a forward direction a pair of resilient arms I9. These arms have their outer ends terminated in ball shaped extremities 28' which are normally received within sockets .2I provided in connection with the upper leg I4 of the latch I3. The construction and positioning of the arms I9 are such as to cause them to exert a downward force on the guard as an entirety so that the ribs II will be advanced toward the cutting edge I2. This action, however, is counteracted or limited by a pair of adjusting screws .22, the threadedshanksof these .lscrews being-carried by'thetop wall 8 of the guard casing and the tlowerflends. of said shanks are .adapted to engagewith the back. edge 23. of the blad'eI. .By reason of the independent adjustment afforded by the. screws22, the relationship betweenthe ribs I I and the cutting edge I2 maybe regulated to obtain the desired safety conditions. Adjustment of thescrewsll will be necessitated fromtimeto time as the cutting edge of the blade I wears through the effects of use, honing and stropping.

In view of the foregoing, it will be seen that the present invention provides an easily applied and readily adjustable safety guard for so-called straight-edge razors. The construction of the guard is such that it will not in any way interfere with the normal use of the razor in face shaving operations and when it is desired to clean, strep or hone the razor, it is a simple matter to remove the guard from the blade. When the guard attachment is applied, the latch l3 and its associated lip l5 retain the hingedly connected sections of the guard casing in clamping relationship with the blade I. The resilient arms l9 force the guard in a downward direction on the blade so that a predetermined relationship will exist between the ribs I and the cutting edge l2,'providing for normal use of the razor but preventing injury to the face. Through the use of the screws 22, very fine adjustments in the relationship of the guard to the edge of the razor is obtainable and at the same time compensation is provided for the loss in shape of the cutting edge of the razor due to conditions of wear and service.

The invention is of course susceptible to considerable variation in mechanical details without departing from the essential features of construction above described. For instance, as disclosed in Fig. 6, the guard casing 24 is formed from a resilient metal with the side walls 6a and 1a thereof integrally united through the horizontal top wall 8a, the casing being devoided of the hinges provided in the form of the invention illustrated in Fig. 1 for permitting separation between the walls 6 and 1. Thus in Fig. 6, a guard casing is slipped over the back of the blade I from one end of said blade and the walls 6m and la resiliently separated. Also, in Fig. 6, the top wall 8a, is equipped with a detachable bracket 25, the latter terminating at its lower end in a lip 26, which receives the outer end of a spring 21 carried by a clamp l8a. In this form of my invention, the pressure exercised by the outer end of the spring 21 forces the guard casing downwardly on the blade I, in substantially the same manner as the arms l9. Also, in Fig. 6, the guard casing is provided with adjusting screws 22a. for regulating the positions of the ribs Ila with the cutting edge of the razor blade.

What is claimed is:

1. A razor guard comprising a casing formed to resiliently embrace the sides of a razor blade, the lower edges of said casing being formed with ribs disposed in guarding relationship with the cutting edge of the razor blade, a clamp formed to be separately mounted on the back of the razor blade independently of the guard casing, a spring secured at one end to said clamp and having its outer resilient end arranged to engage with the guard casing to force the ribs of the latter toward the cutting edge of the blade, and threaded means carried by said casing and engageable with the back of the razor blade for aligning said ribs in guarding relationship with the cutting edge of the razor blade.

2. Safety appliances for hollow ground razor blades comprising a metallic casing formed to include resiliently separable side walls arranged to be frictionally received upon the razor blade, said walls terminating in guarding ribs arranged to lie and extend contiguous to the cutting edge of the razor blade, spring means detachably carried by the razor blade separately from the guard casing and cooperative with the latter to force said ribs toward the cutting edge of the blade, and threaded means arranged at each end of the guard casing cooperative with the back of the razor blade to limit the action of said spring means and maintain said ribs in parallel relationship with the cutting edge of said blade.

3. Safety appliances for hollow ground straight edge razor blades comprising an inverted U- shaped casing including resiliently separable side walls, the ends of said casing being opened, said side walls terminating at their lower ends in ribs arranged to extend parallel with and contiguous to the cutting edge of the razor blade, a clamp frictionally received on the back of the razor blade separately from said casing, spring means projecting from said clamp and. cooperative with said casing to force the latter downwardly upon the razor blade, and adjusting screws arranged at each end of said casing and cooperative with the back of the razor blade for limiting the operation of said spring means and regulating the spaced relationship existing between said ribs and the cutting edge of the blade.

4. Safety guard mechanism for straight edge razors comprising a casing composed of a pair of hingedly connected sections between which a razor blade is adapted to be positioned, latch means for retaining said sections in clamping relationship with an associated blade, a spring support detachably carried by the back of the razor blade separately from said casing, a spring projecting from said support, said spring having its free end arranged for engagement with said casing to force the latter downwardly upon said blade, and threaded means carried by said casing and cooperative with the back of the razor blade to control the relationship between the lower longitudinal edges of the casing sections and the cutting edge of said blade.

5. Guard mechanism for straight edge razors comprising a casing composed of hingedly connected sections between which the blade of a razor is adapted to be frictionally received, resilient latch means for retaining said sections in embracing relationship with the sides of the razor blade, a spring detachably carried by the back of the razor blade separately from said guard casing, the free end of said spring being disposed for engagement with said casing to force the latter downwardly upon. said blade, and threaded adjusting means disposed at the opposite ends of said casing and cooperative with the back of the razor blade in varying the relationship between the lower longitudinal edges of said guard casing and the cutting edge of said blade.

6. Guard mechanism for a straight edge razor comprising a casing of inverted U-shaped cross section, the side walls of said casing being resiliently separable and the ends being open, a clamp separately secured to the back of said razor adjacent the handle extension, a spring member secured at one end to said clamp and engaging said casing with the other end to force said casing toward the sharpened edge of said razor, and adjusting screws carried by the back of said casing and engaging the back of said razor to resist the force of said spring and vary the spacing of the lower edge of the side walls of said casing from the sharpened edge of said razor.

7. Guard mechanism for a straight edge razor comprising an inverted U-shaped casing provided with an open end, the side walls of said casing being resiliently separable, adjusting means carried by said casing for varying the spacing of the lower edges of the side walls from the sharpened edge of said razor, a clamp secured to said razor between the casing and the handle of the razor and a spring carried by said clamp and engaging said casing to move the same toward the sharpened edge of said razor, said clamp and said casing being separately removable from said razor.

ALBERT WINTERKORN.

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