US1619833A - Device for sharpening straight and safety razor blades - Google Patents

Description

March 8 c. E. STEGNER DEVICE FOR SHARPENING STRAIGHT AND SAFETY RAZOR BLADES Filed Feb. 4. 1924 2 Sheets-Sheet 1 INVENTO March 8,1927. ,833

c. STEGNER DEVICE FOR SHARPENING STRAIGHT AND SAFETY RAZOR BLADES "Filed Feb. 4. 1924 2 Sheets-Sheet-Z Fbj.8.

INVENTOR known as safety razor blades.

Patented. Mar. 8, 1927.

. UNITED STATES PATENT. OFFICE.

GLOYD E. STEGNER, OF DETROIT, MICHIGAN.

DEVICE FOR SHARPENING STRAIGHT ANID SAFETY RAZOR BLADES.

Application filed February 4, 1924. Serial No. 690,673.

trated in the accompanying drawings, in

which Fig. 1 is a front elevation of the device in a non-adjustedposition; Fig. 2 is a plan of the, same; Fig. 3 is a side elevation of thesame; Fig. dis a vertical section of one sharpening stone and its holder on line 4-4 of'Fig. 3; Fig. 5 is-the horizontal section onthe line 55 of Fig. 1; Fig. 6 is a horizontal section on line 6-6 of Fi 1; Fig. 7 is a vertical section on the line %--.-7

9 is a horizontal section on line 99 in Fig. 1; Fig. 10 is a partial front 'view of another modification of my invention showing the sharpening stones being held in position by means of a'sprin and spring plunger; Fig. 11 is a section trough one of the spring plunger retained. sharpening stones in a modified design and is on a line similar to 7+7 in Fig. 3;.Fig. 12 is a section on the line 12-12 in Fig. 11.

The two sharpening stones 1 are retained in the holders 2 and 3 at their inner ends by means of a tongue 4 which is inserted into a slot in end ,of stones 1. Tongue 4 may be an extension of brackets 5 and '6- whichare suitably fastened to holders 2 and 3. Stones 1 are also held in position at their outer ends by means of small clips 7 which have a tongue engaging a slot in stones 1.

Clip '7 is suitably limitedto slide longitudinally to a position designated by dotted lines in Fig. 4, whenstones 1 may be re moved, changed, or placed-in a reverse position. Holders 2 and 3 may be formed as at 8 to hold cli 7 in proper position. It is to be noted t at'the sha enmg stones 1- 1; areto be made with doub e sha ening faces as designated "at 9 and 10 in ig. 4, each face being suitably graded for rough or finish sharpening operation, and each face being rendered available for use by means of clip 7 as explained above. Holders 2 and 3 are extended beyond stones 1 to form a suitable handle. Holder 2 is so formed as to slide within the olfset handle portion of holder 3.

Within the handle portions of the device are springs 11 (see Fig. 9) which always tend to force apart holders 2 and 3, in such manner as to keep sharpening faces of stones 1--1 in a parallel position. Springs 11 are suitably retained in an operating po sition by projections 12, these being formed, 1n the design shown, by a raised portion in holders 2 and 3. The pressure of springs 11 is taken by stud 13 and nut 14 (see Fig. 5). Stud 13 is suitably fastened to holder 3.

In Fig. 10 another method of holding the sharpening stones 15 is shown. In this form the stones 15 are held in position by means of Fig. 3; Fig. 8 is a front elevation of the device in an adjusted position and showinga razor blade in various positions; Fig.

of a spring 16 (see Figs. 11 and 12) said sprmg being contained in a chamber formed by suitably fastening a bent plate 17 (see 1 Figs. 11 and 12) to the holder 18. A bent plunger 19, fitting and sliding within the above mentioned chamber contacts with the end of stone 15. The stone .15 is formed at each end with a double angular face 20 which contactsat the outer end with a similar angular face 21 formed on the inside of end of holder 18 and at its inner end with the angu lar wall of the plunger 19, saidang'ular contactsalways forcing stone 15 to a seat in Similar numerals refer to similar parts throughout the several views.

of stones 15. To remove the stones 15, the" stone is forced against the pressure of spring 16 .until the outer end of stone 15 is clear of the angular face 21 of holder 18, the whole device being held in an upright position to prevent spring 16 and plunger 19 from falling out of holder 18, or said spring 16 and plunger 19 may be suitably restrained by fastening to holder 18 or bent plate 17.

In Fig. 8, a'razor blade is indicated at the beginning of the preferred method of sharpening. The razor blade 22 is inserted be-v tween the sharpening stones 1 and then the stone holder 2 as adjusted to a slight contact with the thickest portion of the blade, the adjustment being made by turning nut 14 and ftlnl'cinlg holdirs 2 andti1 to ther, the

r a wa s eepln e s a mu f ce fi blades parallel with each dthei The razor blade in the sharpening operalion, may be made to occupy alternately the position indicated at 23 and 24, thus sharpening each side of the blade, the change in position being made with the razor blade always in contact with the two sharpening stones, thus permitting one, not skilled in the art, to perform the sharpening operation without injury to blade.

It is also to be noted that any adjusted position may be maintained by means of nut 25, stud 26, and clamping plate 27 (see Fig. 6). Clamping plate 27 is suitably fastened to holder 3 and the side of holder 2 slides within the space between clampin plate 27 and holder 3. Holder 2 is notched at 28 to permit passing around stud 26.

'I claim:

A razor sharpening device comprising a pair of sharpening plate holders, each of which is provided with an open side, the open sides being arranged adjacent each other,

.each of said holders being provided with an inwardly inclined end wall and extended side walls, sharpening plates slidably mounted in said holders between said side walls, the ends of said sharpening plates being adapted to engage the inwardly inclined end walls of the holders, springs mounted in said sharpening plate holders and engaging the opposite ends of said sharpening plates to force them toward said inwardly inclined end Walls, transverse s rings arran ed between said sharpening p ate'holders eyond said sharpening plates, and means for adjustably retaining said sharpening plate holders in position with respect to each other.

CLOYD E. STEGNER.

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