US2569167A

US2569167A - Safety razor

Info

Publication number: US2569167A
Application number: US46290A
Authority: US
Inventors: Jay T Hellmann
Original assignee: Individual
Current assignee: Individual
Priority date: 1948-08-26
Filing date: 1948-08-26
Publication date: 1951-09-25
Anticipated expiration: 1968-09-25

Description

Sept. 25, 1951 J. T. HELLMANN 2,569,167

SAFETY RAZOR Filed Aug. ze, 1948 2 sheets-sheet 1 INVENTOR.

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Sept. 25, 1951 J. T HELLMANN 2,569,167

SAFETY RAZOR v Filed Aug. 26, 1.948 2 Sheets--Sheeil 2 Y ITO. l. l )Y cleyZHe//m/z, j J0 E" ATTO R N EYS j blade holder.

Patented Sept. 25, 1951 UNITED STATES PATENT OFFICE "SAFETY RAZOR Jay rnelimann, chicago, 1u. Application August 26, 1948, Serial No. 46,290

My present invention relates to improvements in safety razors in the broad class of cutlery, and it involves certain novel features of con-- struction and combinations and arrangements of parts as will hereinafter be described, and more particularly set forth in theappended claims.

' By the embodiment of my invention as illustrated in the drawings the separable parts of the device may, with facility vand low cost of production, be

manufactured, and assembled with convenience,

to provide a razor with superior cutting qualities;

the parts may readily be clamped together for use, and with equal facility they may be partially separated for cleansing and drying; as well as for changing blades when necessary.

In the accompanying drawings I have illus- .-trated a complete example of a physical embodi- Ament-of my invention in which the parts are combined and arranged in accord with one mode Ihave devised for the practical application of the principles of my invention. It will however be understood that changes and alterations are contemplated and may be madev in these exemplifying drawings and mechanical structures, within the scope of my claims without departing from! the principles of the invention.

y n Figure l is a view in elevation of a safety razor f Figure 5 is a sectional view showngthe guard plate unclarnped to release the blade and permit removal of the blade.

Figures 6 and 7 are sectional views at lines B-G and 'I--1 of Fig. 2.

Figure 8 is a detail perspective view of the guard plate.

Figure 9 is an inverted perspective view of the v.guard plate; and Figure 10 is a top plan of the central portion of the guard plate.

Figure l1 ,is a perspective view of the spring Figure 12 is a perspective view of the handle sleeve.`

Figure 13 is a perspective view of the clamp plate or clamp head; and Figure 14 is a perspective view of the handle.

In the preferred form of the invention, the handle includes a screw bar or handle I having an enlarged knob 2, and a tubular member or gripping sleeve 3 mounted on the bar and pro- 3 Claims. (Cl. SOI-73) vided with left hand screw threads 4. The clamping block, head, or plate 5 for the blade B is fashioned with plane faces disposed at an obtuse angle to permit facile strokes of the razor, and a lpost 6 angular in cross section and integral with the clamp head, is threaded at 'I into the upperv tubular end ofthe handie -bar with right ,hand threads that are instrumental in drawing the headinto clamped position over the blade.

Q At its lateral edges, the clamp head is reduced to forrncomparatively thin lips 8, 8 that project over the cutting edges of the blade B, and the head is provided with spaced

holes

9, 9, near Vits ends, to guide and seat various parts into working position and to release the parts.

The blade B is clamped between the' clamp head and its lips and a guard plate indicated as a whole by the letter G, and the guard plate is vfashioned with an integral tubular stem I0 that is externally threaded to provide a right hand threaded engagement at II with the internally threaded upper end of the clamping sleeve 3 'of -the handle.

As seen' in Fig. 8 the guard plate G is fashioned with a central angular bore I3 that ts over the post 6 of the clamp head, and two spaced oblong slots I 4, I4 in its under face are connected by grooves I5 that extend from the tubular stem to the Vrespective slots.

yAlong its lateral portions, the guard plate is stepped down to its guarding edges, and for this purpose two parallel ledges I6 of the plateare fashioned with notches or lugs and grooves to form the guard teeth I'I extending from end to endl of the guard plate, and an additional step or vledge I8 isfashioned on the teeth I'I, except for thepair of end teethat the opposite sides of the V plate'and against which the lips 8, 8, bear, resiliently. By this construction and arrangement of` partsfthe lips 8 clamp the cutting edges ofthe `.blade against the stepped ledge and teeth of the guard plateto provide the necessary clearance forthe cutting edges at the tip edges of the vstepped teeth.

. For guiding andretaining the blade in accurately adjusted position a spring blade holderis provided as bestshown in Fig. 11 that includes a split resilient, friction clamp-sleeve I9, having resilient tongues 20 struck from its walls, which has a sliding iit over the upper internally threaded end' of the handle bar I. The clamp sleeve is fashioned with a pair of spaced diametrically arranged angle or L-shaped arms 2|, flat in cross section, the upright portions of which nt into complementary grooves A, A in the exterior face of the tubular stem I0, and the horizontal portions of the arms fit into the grooves I5, I5 in the under face of the guard plate.

The angular, spring arms 2| terminate in angular heads 22 that project into the slots I4 of the guard plate, and the heads are provided with usual studs or pins 23 that project upwardly through the usual spaced holes of the blade B and into the sockets or holes .9, 9 of the clamp head.

In Figs. 1 and 2, the blade is clamped in operative position by first turning the handle bar `suo that the right hand threads 'I pull the blade with the head and guard plate into position s`' that the sleeve I may be turned to pull the holder and ing, the parts may be turned to position of Fig'4 Where they are separated, and then swung to and fro through the shaving water to remove soap 'and accumulated hairs, after which the parts inay be dried in suitable manner, and then retored to shaving position.

For changing blades, the head is first unthreaded from the handle bar and withdrawn f romthe blade and guard plate, as indicated in Fig. 5, so that the used blade may be lifted from the holder, and a fresh blade may be applied thereto, after which the parts are screwed together for claniping the blade in shaving position.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is: e 1. In a safety razor as described, the combination with a clamping head provided with holes, and a post polygonal in cross section, a guard plate having a tubular stem rigid with the post and longitudinally extending exterior grooves in said stein, said guard plate having spaced slots, and exterior grooves in its under face, of a blade provided with holes, and a blade holder, said holder having a resilient clamp sleeve surround- `the tubular stem, a pair of angular and re- Asilient arms rigid with the clamp sleeveand engaged in the groovesV of the tubular Stern and guard plate, angular heads on said arns projecting into the slots of the guard plate, retaining "studs on said angular heads projelting 'through holesin the blade and clamping head, a handle borv threaded on the post, and a handle sleeve threaded on the bar for clamping the 're- "silient sleeve. Y

2. In a safety razor, Ythe combination which Y onprises a ra'z'or head having a polygonal post extended from thefce'nter of the under ilffape thereof With thlea'so the extended ed 0`f the `post and with openings in tho` said dead and spaced from the ends thereof, a handle having a stern with ahnge'r gripping knob on one end, a threaded socket in the opposite endvand threads on the outer siirface positioned with the threaded socket thereof threaded on the threads of the kend of the post, a guard 'plate having a tubular the head, said stem of the guard plate having threads on the end thereof extended from the plate, said guard plate having notches therein spaced from the ends and positioned to register with the said openings spaced from the ends' of the head. a gripping sleeve having spaced threads therein positioned over the stem of the handle and extended over the threads of the tubular stern of the said guard plate, and a clamp sleeve' positioned on the stem of the handle and having L-"shaped spring arms with studs on exl tended ends thereof mounted with the said spring arms under the said guard plate and positioned whereby the said studs extend into the slots of theguard plate and openings of the head for positioning and retaining razor blades between the guard plate and head.

3. In a safety razor, the combination which oniprises a razor head having a polygonal post extended from the center of the under surface thereof with threads on the extended end of the post and with openings in the said head and spaced from the ends thereof, a handle having a s'tern with a finger gripping knob on one end, a threaded socket in the opposite end and threads on the outer surface positioned with the threaded socket thereof threaded on the threads of the end of the post, a guard plate having a tubular stern nested under the head and positioned with the tubular stem thereof fitted over the po'st of the head, said stem of the guard plate having threads' on the end thereof extended from the plate, said guard plate having notches therein spaced from the ends and positioned to register with the said openings spaced from the ends of the head, a gripping sleeve having spaced threads therein positioned over the stem of the handle and extended over the threads of the tubular stem o'f the said guard plate, and a clamp sleeve positioned on the stem of the handle and having Lshaped spring arms with studs on extended ends thereof mounted with the said spring arms under the saidv guard plate and positioned whereby the said studs extend into the slots of the guard plate and openings of the head for positioning and retaining razor blades between the y guard plate and head, the under surface of the said guard plate having longitudinally disposed slots' therein positioned to receive outwardly extended sections of the said L-shaped spring arms and the threads on the end of the tubular stem of the guard plate also having slots extended therethrough and said slots of the threads of the tubular stem being positioned to receive the said L-shaped spring arms.

JAY T. HELLMANN.

REFERENCES CITED The following references are of record in the iile of this patent:

UNITED STATES PATENTS vNumber Name Date 1,562,445 GaSman NOV. 24, 1925 1,664,279 Aguilar Mal'. 27, 1928 1,756,224 Theodoropulos Apr. 29, 1930 1,981,773 Black NOV. 20, 1934