US2019475A

US2019475A - Razor blade for safety razor devices

Info

Publication number: US2019475A
Application number: US8133A
Authority: US
Inventors: Baudis Adolph
Original assignee: Individual
Current assignee: Individual
Priority date: 1935-02-25
Filing date: 1935-02-25
Publication date: 1935-11-05
Anticipated expiration: 1952-11-05

Description

Nov. 5, 1935. A. BAUDls 2,019,475

RAZOR BLADE FOR SAFETX-r RAZOR DEVICES Filed Feb. 25, 19:55

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AnjoRNEY Patented Nov. 5, 1935 UNITED STA VENT OFFlCE RAZOR BLADE FOR SAFETY RAZOR DEVICES 4 Claims.

The subject of the present invention are certain new and useful improvements in razor blades for so-called safety razor devices.

From the point of view of economy the different razor blades which are commonly used in the diierent safety razor apparatus mean a considerable Waste of the very valuable quality-steel, which is a rather expensive material; besides that most types of razor blades, in particular the so-called double-edged blades are very liable to be broken by stresses in handling them, because their middle zone is considerably weakened by the different holes or slots stamped into them as means for securing the right positioning of the blade and for the purpose of identifying the different types of blades made by different manufacturers.

The rst object of the present invention is to curtail the waste of valuable material and to provide a new and improved razor blade, which offers the greatest economy for the manufacturer as well as for the user. Another object of the invention is to produce an improved razor blade which has not less than four cutting edges, but

which blade in spite of its greater number of cutting edges retains the universally accepted size of the standard razor blade, so that this new and ,improved razor blade will fit into all and any apparatus of the differenttypes of symmetrically built safety razors, which are in common use. The new and improved type of razor blades, which I devised in order to carry out the before said objects of the invention, and which blade hereinafter will be called the combination-blade, consists of two narrow double-edged lamina-blades, arranged side by side at some distance from each other, and held together by connecting links, which are jointed to the lamella blades, so that the combination-blade has two outer operative cutting edges and two inner unoperative edges.

The construction and the connect-ion of the different parts in my new combination blade is such as to allow the one lamina-blade together with the connecting links to be swung in the plane of the combination bladeround the joints in the other lamina-blade, so as to bring the originally inoperative inner cutting edges into operative position at the outside of the combination blade.

In order to make the invention perfectly clear and well understood I shall describe now in detail some preferred embodiments of the beforesaid inventive idea, taking reference to the drawing, in which the i Figures 1 to 3 illustrate a rst embodiment,

which comprises two lamina blades, and two connecting links, pivoted to the blades, the Figures l and 2 showing the two alternative settings or adjustment of the different parts for use in a razor apparatus, and Figure 3 showing an intermediary position in changing from the setting 5 Figure l to the setting Figure 2.

Figure 4 shows a variation of the rst embodiment, in which a single connecting lashing is pivotally jointed to the two lamina blades.

Figure 5 illustrates a second embodiment of the 10 invention, in which two lamina blades are connected by two lashes, which are hooked into holes of the lamina blades.

Figures 6 to 8 illustrate a third embodiment, in which two lamina-shaped blades are held to- 15 gether by two wire-made connecting links, hooked into holes of the lamina blades, the Figs. 6 and 7 showing the two alternative settings of the parts for use of the combination blade, and Figure B showing an intermediary position in changing 20 from the one setting to the other setting.

Figures 9, 10 and 11 show, in an enlarged scale, cross-sections through the connections between the blades and the connecting links in the Figs. 1 to 3, 4, and 5 to 8 respectively. 25

Referring now in particular to the drawing in the combination blade of the first embodiment according to the Figs. 1 to 3 two narrow laminashaped blades 2l, 2l', are provided each at both their longer sides with sharpened cutting edges 30 22, 22". Two connecting lashes 23, 23' are fastened to the two blades at

points

24, 24 in the longitudinal axial zones of the blades near to their ends. The joints or pivotal connections are preferably made in the most simple manner as 35 shown in detail in the Figure 9: a hole 25 is stamped through the connecting link 23 (23') and through the blade 2| (2 I and the material of the one member is pressed through the hole, turned up over the other member and chased to 40 the outside, so as to form a small brim 26 around the upper end of the hole 25. The one end of the lashes extends crosswise on top of the one blade, whereas the other end of the lashes eX- tends crosswise below the other blade. In conse- 5 quence of this arrangement the one blade, (for instance blade 2l) together with the connecting links may be swung in the plane of the combination-blade around the joints or pivotal connections (2&3) in the other blade (2V), and such change 50 of the mutual positions of the lamina blades from the Figure l through the Figure 3 to the Figure 2 brings the originally inner and inoperative cutting edges 22' to the outside of the combination blade into the operative positions. If the con- 55 fio hooked. In the same manner, as it necting lashes are pivoted close to the ends of the blades, so that the lashes extend somewhat beyond the ends of the blades, as it is shown in the illustrated example, then the combination blade can be easily handled by two ngers pressed from the outside against the lashes, avoiding thus the danger of the iingers being cut by the sharp edges of the blades, and furthermore the cutting edges need not be touched at all, so as to remain absolutely clean and sterilized.

The two connecting

lashes

23, 23 have in their middle broadened parts at both sides recesses v21',

the outer portions of which are rounded or wedgelike broadened'but have preferably a rectangular Y bottom; such shape of the recesses 21, as shown in the drawing, facilitates the iirstY introduction and the denitivecorrect setting of the combina- Y tion blade into the razor apparatus by the means of the central longitudinal rib or the two short blade-positioning pins which are provided in most of theA safety razor apparatus of the different types. Some kind of razor apparatus however have no such central rib orV pins, but they have four blade-holding hooks or shoulders at the four corners of the blade supporting member. In order to be tted for use likewise in these lastmentioned apparatus, the combination blade according to the present invention may be clipped further at the-four corners of each lamina-blade, as it is shown by short-dotted lines in the Figures 1 to 3, and by full lines in the Figures 4 to 8. These rectangularly clipped recesses 28 t into or below the` said hooks or shoulders at the corners of the blade supporting members of the last mentioned apparatus.

In the new and improved combination blade according to the Figure 4 two narrow

laminashaped blades

29, 29 with

cutting edges

30, 30 on their longer sides and blade positioning recesses 28 at their corners are united by means of one single connecting lash 3|, which is fixed at the middle points 32, 32' of the two blades.

'The connection of jointing between the lash 3l and the lamina blades may be made either by means of rivet-bolts 33, as shown in the Figure 10, or in the manner described above with reference to the Figure 9. The connecting lash is broadened in its middle part, and it has a central hole 34, adapted to give free passage to the central bolt,` which is usually provided in the safety razor apparatus, for the purpose of pressing together the blade-clamping cap and the blade carrying member of the apparatus.

In the combination blade according to the Figure 5 the two lamina-shaped blades 35, 35', having

lateral cutting edges

36, 36 and corner re- .cesses 28, are provided, near tothe ends of their longitudinal axial zones, with holes 31, such as it may be seen best at the lower end of the left side of Figure 5. The connecting links between the .blades are lashes 38, 38', which are provided, in

their broadened middle parts, with blade-positioning recesses 21, such as they have been described above with reference tothe Figures 1 to 3. At the ends of the connecting lashes 38, 38' however are tongues 39, such as shown in the upper end of the right side of Figure 5, which tongues, in assembling the combination blade, are

passed through the holes 3l of the blades, and

are bent over the other sides of the blades, so as to form hooks 4Q, on which the blades are has been described above with reference to the previous examples, so likewise in the construction according to the Figure 5 the connecting lashes overblade together with the connecting links may be 5 swung round the pivotal holes in the other blade, so as to bring the inner cutting edges 36 into operative positions at the outside of the combination blade.

In the last embodiment of the invention, as 10 shown in the Figures 6 to 8, the combination blade consists of two laminae 4 I, 4| provided with

lateral cutting edges

42, 42 and with cornerrecesses 28, and further with holes 43 in the longitudinal axial zones of the blades near to their l5 ends, whichY blades are united by wire-made and end-hooked connecting links 44, 44', the hooks atV the connecting links being bent in opposite directions and being hooked from opposite sides into the holes 43 Vof the blades. The hook-con- 20 nection between one blade and one connecting link, which is shown in the Figure 11, in an enlarged scale, may be considered as a crosssection of the corresponding parts either in Figure 5, or in the Figures 6 to 8. It is evident however 25 and considered as falling within the scope of protection of the present invention, that the ends of the tongues 39 at the lashes in Figure 5 or the ends of the connecting wires 44 in the Figures 6 to 8, instead of forming hooks, may be pressed 30 to the form of headed rivets, similar to those shown in the Figure 10.

I claim:

1. A combination-blade, comprising in comblnation: two double-edged lamina blades arranged 35 side by side at some distance from each other and having holes in Vtheir longitudinal axial zones;. and blade-holding means, overlapping with their'ends partly the two blades at diierent sides; and oppositely directed hooks at the extremities Vof the connecting means, hooked from different sides into the holes of the blades, so as to allow the vone blade together with the connecting means to be swung, in the plane of the combination-blade round the connection in the 45 Vother blade; and blade-positioning recesses at the four corners of each lamina-blade.

2. A combination-blade, comprising in comblnation: two double-edged lamina blades arranged side by side at some distance from each other; blade-holding links, overlapping with their ends partly the two blades at different sidesnear to the ends of the blades, and having recesses at both sides of the middle part ofthe links, for posimening the combination-blade; and pivot-like joints between the ends of the links and the blades in the longitudinal axial zones of the blades and of the links, so as to allow the one blade together with the links to be swung in the plane of the combination-blade round the pivot-joints in the other blade.

3. A' combination-blade, comprising in combination: two narrow lamina-shaped double-edged blades arranged side by side at some distance from eachother; and a pair of blade-holding links near to the lateral end-zones of the combination-blade, said links overlapping partly the two lamina-blades on the upper side and on the lower side respectively of their opposing edges; and joint-forming connections between the links and the lamina-blades, adapted to allow both lamina-blades to be swung at the same time in the plane of the combination-blade round their joint-forming connections with both links.

4. A combination-blade, comprising in combination: two double-edged lamina -blades arranged side by side at some distance from each other and having holes in their longitudinal axial zones and blade-holding means, overlapping with its ends partly the two blades at different sides; and oppositely directed hooks at the extremities of the connecting means, hooked from different sides manner, that the end of the swung blade re- 5 mains in the plane of the combination-blade.

ADOLPH BAUDIS.