US2149421A - Safety razor adjustment device - Google Patents

Description

March 1939- H. w. CLAPP v 2,149,421

SAFETY RAZOR ADJUSTMENT DEVICE Filed May 10, 1937 mvs NTORY Hmu w cza P fiW Attornq I Patented Mar. 7, 1939 rare- N?! OFFICE SAFETY RAZOR ADJUSTMENT DEVICE Harold WesleyClapp, Cornwall, Ontario,

Canada Application May -10, 1937., SerialNo. 141,800 In Canada March 18, .1937

' 4 Claims.

This invention relates -to improvements in an adjustablesafety razor. Itsprimary object being to provide meanswhereby the cap or blade holder may beadjustedwith -respect to the guard and thereby vary the curvature of the blade held therebetween.

A further object of the invention is to provide means to adjust the tension on a razor blade held between the cap and guard to vary the curvature of the said blade whereby the cutting angle of the same is adjusted as desired.

A still further object of the. invention is to provide adjustment means, as and for the purpose stated, andmeans to retain the same in the required adjusted position.

With these and other objects in view that may appear while the description proceeds, the invention consists in the novel construction and arrangement of parts as hereinafter more specifically set forth, claimed and shown in the accompanying drawing and wherein:

Fig. 1 is a partial side view of my invention.

Fig.2 is a partial sectional view showing the handle at right angles to Fig. 1 and the cap removed therefrom.

Fig. 3 isa similar view to that shown in Fig. 2 with the cap attached to the handle.

Fig. 4 is a section on the line 44 of Fig. 2.

Fig. 5 is an end view of the cap showing the details thereof.

Fig. 6 is a sectional view showing an alternative construction of the retaining means. I Fig. 7 is a sectional view on the line l-'! of Hg- 6. V Fig. 8 is a sectional view on the line 88 of Fig. 6.

Referring more in detail to the drawing in which similar reference characters designate corresponding parts throughout the several views it will be seen the invention is a safety razor having a handle H). A threaded aperture II in the end thereof provides means whereby the threaded stud l2 of the cap I3 is threadably attached thereto. A blade guard I4 is freely mounted on the stud I2 and the blade l5 of standard construction is retained between the cap and guard. The tension on the blade is adjusted by screwing the stud into the handle thereby causing the blade to corn form to the curvature of the cap and blade guard.

It will be seen that as the stud is screwed into the handle the cutting angle of the blade is varied.

It has been found that as the cutting angle is decreased from a right angle with the center line of the handle so the efficiency of the blade de- 5 creases. It is the intention of this inventionas previously described to provide angle adjustment for the said blade by means of the threaded stud and means to retain the same in any desired position of adjustment.

For this purpose the said stud I2 is provided 5 with a plurality of longitudinal grooves I6. These may be placed equi-distant around the circumference of the stud I2 as in Fig. 4, or may be out only in a part thereof as shown in Fig. 5. An elongated slot I1 is constructed in the handle I0 1 and which is deep enough to merge into the threaded aperture H. A lever I8 is pivoted in the said slot on a pin l9 and a knifelike projection or look member 20 is formed on the end thereof and arranged to engage the said longitudinal 15 grooves IS in the stud l2 to prevent the same from further rotation when set in the desired position. A spring 2| is positioned under the opposite end of the lever the tension of which spring urges the lever upwards and consequently main- 20 tains the lock member in engagement with the groove. I

In the alternative construction shown in Fig. 6,

a collar 22 is formed on the blade guard 14. Said collar is provided with a plurality of longitudinal 25 grooves 23 spaced equi-distantly around the periphery thereof. An annular groove 24 is formed in the end of the handle to receive the said collar and the lock member 20 protrudes through the slot in the handle to engage the said grooves 23. 30 The stud I 2 together with the guard is rotated while the lock member is raised from the collar and the blade set at the desired tension and consequently at the cutting angle required, and the lock member is then permitted to engage the 35 grooves of the collar and thereby retain the same in the set position.

From the foregoing it will be seen the razor is adjusted to suit the individual user. The spring steel of the razor blade will keep the same in posi- 40 tion between the cap and guard members while the lock member will prevent the rotation of the stud or collar thus retaining the adjustment as set out.

It is believed that the construction and ad'- 45 vantages of the structure shown may be apparent from the foregoing paragraphs taken in conjunction with the accompanying drawing without further detailed description. '0

While the preferred embodiment of the invention has been disclosed it is understood that minor changes in the details of construction, combination and arrangement of co-operating parts may be resorted to within the scope of what is claimed Without departing from the spirit of the invention.

I c1aim:-

1. In a safety razor as set forth, comprising a stud engaging said threaded aperture providing tension adjustment means for a blade positioned on said stud and between said clamping members, a spring actuated lever pivoted on said lever and a lock member formed on said lever adapted to engage a plurality of longitudinal grooves formed on said threaded stud to prevent rotation thereof within the threaded aperture of the handle.

3. In a safety razor as set forth, comprising a threaded aperture handle, a pair of blade clamping members mounted on a threaded stud, said stud engaging said threaded aperture providing tension adjustment means for a blade positioned on said stud and between said clamping members, and a spring actuated lever pivoted on said handle and adapted to engage one of a plurality of grooves in a collar formed on one of said clamping members to prevent rotation of the clamping members With respect to said handle.

4. A safety razor comprising a handle having a threaded aperture in one end, a cap having a threaded stud for engaging the threaded aperture of the handle, a guard mounted on the stud, a blade positioned between the cap and guard adapted to be clamped therebetween upon turning of the handle and a spring actuated lever pivoted in a longitudinal slot in said handle adapted to secure the cap and guard against rotation with respect to said handle.

HAROLD WESLEY CLAPP.

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