US3311975A - Blade injector razor having flexible means connecting the handle to the razor head - Google Patents

Description

April 4, 1957 E. DE LONGUYON 3,311,975

BLADE INJECTOR RAZOR HAVING FLEXIBLE MEANS CONNECTING l THE HANDLE TO THE RAZOR HEAD Filed June 24, 1964 20 Fig.4 F195 FQ- 7 Humm a I 24 -9 27C! 220 25 m@ 3 Fig,2

United States Patent O 3,311,975 BLADE INJECTOR RAZOR HAVING FLEXIBLE MEANS CUNNECTING THE HANDLE T THE RAZR HEAD Ernst de Longnyon, Pullach-Munich, Germany, assigner to Climar All., Zug, Switzerland Filed .lune 24, 1964, Ser. No. 377,621 Claims priority, application Switzerland, July 31, 1963, 9,535/63 3 Claims. (Cl. 30-62) Characteristic of the razor of the present invention is that there is provided two blade clamping plates formed of synthetic material, that is plastic, wherein the blades are held between a rigid and a resiliently pressed blade clamping plate, these blade clamping plates being provided with a respective gripping component which, when assembled, collectively form a tapered socket, with such gripping components being held together in their mutual position by means of a casing or housing sleeve.

One of the major advantages of the present invention resides in the fact that the safety-razor can be disassembled by removal of a gripping component, more specifically, by removing the casing serving as a handle. A special spring for iixedly clamping the blade is not necessary since one blade clamping plate is constructed to be self-springy. Additionally, the manufacture from plastic represents a considerable saving in costs.

In accordance with a preferred embodiment of the invention the resiliently pressed blade clamping plate is provided with recesses for the purpose of producing a spring action. The resiliently pressed blade clamping plate can also be constructed as a separate element and can be subjected to the spring action of a separate gripping member or component provided with recesses. For this purpose, there can be provided in the resilient blade clamping plate or in the separate gripping member one or more lateral slots and one or more centrally disposed slots. As a result, in the pre-stressed or biased condition there appears a deformation of the slots. The gripping components or members are, for example, assembled together in the lengthwise direction into a tapered socket or sleeve, held together by means of a casing means provided with an inner cone or inside taper. In order to secure the interconnection between the gripping cornponents and the casing means it is possible to employ a thr-ead-type lock, a bayonet-type lock or a snap or springtype catch or lock. In order to be able to achieve an automatic pressing together of the blade clamping plates the one clamping plate can bear with an inclined surface against an appropriate surface of the other clamping plate. The inclined surfaces are advantageously located within the gripping components and are pressed against one -another by means of the casing means.

In order to reduce wear it is recommended to provide the blade clamping plates with a bearing or support plate formed of metal. It is possible to apply to the support plate hooks serving as support means for the cutting edge of the razor blades. For example, the support plate can be form-lockingly connected with one of the blade clamping plates. It can be connected to pins of the aforesaid one blade clamping plate and by means of flexed portions can laterally enage over such clamping plate. Between both of the blade clamping plates there can be located a slot for introducing an insert portion or element operably connected with the blade dispenser or magazine. Furthermore, one blade clamping plate can possess a lateral shoulder or projection into which a slot of the other clamping plate can be pushed thereinto. It has been shown to be advantageous to provide the casing, serving as a handle, with knurls or grooves at its external surface or face for the purpose of ensuring positive handling.

Other features, objects and advantages of the invention Will become apparent by reference to the following detailed description and drawings in which:

FIGURE l is a side view of a first embodiment of inventive safety-razor, with a portion of the casing removed in order to expose the internal construction;

-FIGURE 2 illustrates a front View of the resilient or elastic blade clamping plate;

FIGURE 3 is a fragmentary cross-sectional view of the casing means;

FIGURE 4 is a top plan View of the support or bearing plate;

FIGURE 5 is a side View of the support or bearing plate depicted in FIGURE 4;

FIGURES 6, 7, 8 and 9 depict a portion of modified resilient blade clamping plates possessing different forms of slots.

Describing now the drawings and, with particular attention initially directed to the embodiment depicted in FIGURES l to 5, it will be seen that the safety-razor shown in FIGURE l incorporates a rigidblade clamping plate 1 and a resilient or iiexibleblade clamping plate 2, between both of which there is fixedly clamped the relatively rigid or stiff razor blades 3. Theplate 2, at its upper part neighboring the blade, acts as a seat for the blade and defines a flat surface. Theclamping plates 1 and 2 formed of plastic include tapered portions d and 5 respectively, which each case are integral with a respective half-conical gripping portion 6 or 7 respectively. The respective tapered portions d and 5 together with their associated gripping portions d and 7 respectively, provide gripping components.

Theblade clamping plates 1 and 2 are held together at their gripping portions d and 7 respectively, by means of casing means ii provided with an inside taper or cone 9 and conveniently serving as a handle. The lower end of the grippingportion 7 bears by means of an inclined surface 1t) against a similar surface 11 of the other grippingportion 6, whereby the first grippingportion 7 has imparted to it a force in the direction of thearrow 12 and thereby xedly clamps the razor blade 3. It will further be seen that at theexternal surface 13 of the casing means 8 there are provided knurls or suitable grooves in order to ensure for a positive handling and holding of the razor.

In order to lock theportions 6 and 7, there is further provided a safety or securing mechanism, for example in the form of a pin 1d arranged at the grippingportion 6 which engages in a threading or threadedportion 15 of the casing means 8, thereby providing a thread-type lock. By virtue of turning the casing means 8 thegripping portions 6 and 7 are pulled into the inner cone or taper 9 of the casing means d, with opposite rotational movement such are pushed-out of such casing means.

Thetapered portion 5 exhibitslateral slots 16 and 17 and a substantially central closedslot 18. Due to this physical construction the elasticity of thetapered portion 5 is increased. It is thus permitted to bend and ex transversely to the said flat surface defined by the upper part of plate Z--that is, to move forward in the view of FIGURE l--and also perpendicularly to the plane. In the clamped condition theslots 16, 17 and 13 are deformed, so that they approximately assume the form depicted in phantom lines in FIGURE 2.

A transverse orlateral slot 19 is located between theblade clamping plates 1 and 2 spaced at this location and serving to permit introduction of an insert portion or key of the blade dispenser or magazine. This insert portion, not shown in the drawing, is constructed such that when it is introduced into thetransverse slot 19 theclamping plates 1 and 2 are resiliently spread apart and release the blade 3. Due to the lateral pushing-in of a new blade from the dispenser the old blade is removed. After withdrawing the insert portion of the blade dispenser from the razor the blade 3 is again fixedly clamped.

In order to prevent rapid wear of the bearing or support surface of theblade clamping plate 2, such is advantageously provided with a support or bearing plate 20 having apertures or holes 21a and 22a which seat uponpins 21 and 22 respectively, of the blade clamping plate Z, in order to form-lockingly connect such support plate 20 therewith. This support plate 20 is further provided withflexed portions 23 which laterally engage over the aforesaidblade clamping plate 2.. At the forward end `of the support plate 20 there are locatedhooks 24 and 25 which protect the blade cutting edge against falling-out and against protruding too much towards the front. An opening orpassage 26 is located beneath the blade cutting edge at theblade clamping plate 2 and which serves the purpose of ensuring that such cutting edge is freely exposed.

Further possibilities for providing thetapered portion 5 with slots are depicted in FIGURES 6 to 9. More specically, FIGURE 6 illustrates an embodiment which is quite similar to FIGURE 2, yet thecentral slot 18a is provided with substantially parallel confronting faces ISb. Also, the diametricallyopposed ends 5a of thetapered portion 5 are rounded and merge with anarrower leg portion 5b. In FIGURE 7, the transfer ortapered portion 5 is only provided with lateral orside slots 50 and 5I formed by the substantially Z-shaped arranged webs orlegs 50a, 50h and 50c. In the embodiment of FIGURE 8 there is provided for thetapered portion 5 a considerably larger central closedslot 52, so that onlythin Webs 53 remain, in order to obtain a softer spring. It will also be seen that, in this instance, there are also present thelateral slots 54 and 55. In FIGURE 9 thetapered portion plate 5 is provided with a single, closedcentral slot 56.

While there is shown and described present preferred embodiments of the invention it is to be distinctly understood that the invention is not limited thereto but may be oherwise variously embodied and practised within the scope of the following claims.

What is claimed is:

1. An injector-type safety razor of molded synthetic plastic, including: `an elongated handle; a longitudinal hollow in said handle communicating with one end thereof; a stiff first member dening at one end a clamping plate for a blade and at the other end an elongated member for removable insertion in said hollow; means defining a blade seat and a at surface for the seat; iirst means dening two ends, one end including an extension that is elastic at least in the directions transverse and perpendicular to said at surface, for resiliently urging said blade seat against said first member, whereby to hold a blade therebetween, and for permitting insertion of the key of a blade injector magazine, and the other end dening an elongated member for insertion in said hollow; second means associated with said elongated members to ensure their correct orientation with respect to one another in the hollow; third means associated with said handle for orienting said two elongated members. with respect to said handle and removably locking them within the hollow; fourth means associated with one of said elongated members for cooperating with said third means; a metal bearing plate on the surface of said means; means for orienting and securing the plate; and means on the plate lfor holding the blade in place.

2. The razor ofclaim 1, wherein the elastic extension of said first means includes at least one slot transverse to said first means for ensuring the elasticity; said hollow tapers towards the end of the handle remote from the blade end of the razor, said elongated members also being tapered; said second means includes a flat surface associated with each of said elongated members, said surfaces bearing on one another when the elongated members are inserted in the hollow; and wherein the flat surface of the elongated member of said first member terminates in an inclined surface extending outwardly and downwardly from the flat surface; and the flat surface of the elongated member of said first means terminates in an inclined surface mating with the other inclined surface; said hollow tapers towards the end of the handle remote from the blade end of the razor, said elongated members also being tapered, the tapers of the elongated members and of the hollow cooperating to push said inclined surlfaces against one another and to force said rst means to move in the direction of the blade; and said fourth means engages in said third means to prevent longitudinal krnovement of said two elongated members in said handle.

3. The razor ofclaim 2, wherein said hollow is substantially round in cross section and said third means is a thread in said hollow inclined to the longitudinally axis thereof and said fourth means is a pin for engaging said thread.

References Cited by the Examiner UNITED STATES PATENTS 949,255 2/1910 Bals 30-85 X 1,910,428 5/1933 Diehl 30-51 2,720,697 10/1955 Duncan 30-85 X 2,911,713 11/1959 Kuhnl 30-62 3,095,645 8/1963 Stahl 30-63 3,140,541 8/1964 Craig 30-62 3,140,542 8/1964 Craig 30-62 3,178,814 4/1965 Craig 30-62 3,203,091 8/1965 Craig 30-62 WILLIAM FELDMAN, Primary Examiner.

MYRON C. KRUSE, Examiner.

Claims (1)

1. AN INJECTOR-TYPE SAFETY RAZOR OF MOLDED SYNTHETIC PLASTIC, INCLUDING: AN ELONGATED HANDLE; A LONGITUDINAL HOLLOW IN SAID HANDLE COMMUNICATING WITH ONE END THEREOF; A STIFF FIRST MEMBER DEFINING AT ONE END A CLAMPING PLATE FOR A BLADE AND AT THE OTHER END AN ELONGATED MEMBER FOR REMOVABLE INSERTION IN SAID HOLLOW; MEANS DEFINING A BLADE SEAT AND A FLAT SURFACE FOR THE SEAT; FIRST MEANS DEFINING TWO ENDS, ONE END INCLUDING AN EXTENSION THAT IS ELASTIC AT LEAST IN THE DIRECTIONS TRANSVERSE AND PERPENDICULAR TO SAID FLAT SURFACE, FOR RESILIENTLY URGING SAID BLADE SEAT AGAINST SAID FIRST MEMBER, WHEREBY TO HOLD A BLADE THEREBETWEEN, AND FOR PERMITTING INSERTION OF THE KEY OF A BLADE INJECTOR MAGAZINE, AND THE OTHER END DEFINING AN ELONGATED MEMBER FOR INSERTION IN SAID HOLLOW; SECOND MEANS ASSOCIATED WITH SAID ELONGATED MEMBERS TO ENSURE THEIR CORRECT ORIENTATION WITH RESPECT TO ONE ANOTHER IN THE HOLLOW; THIRD MEANS ASSOCIATED WITH SAID HANDLE FOR ORIENTING SAID TWO ELONGATED MEMBERS, WITH RESPECT TO SAID HANDLE AND REMOVABLY LOCKING THEM WITHIN THE HOLLOW; FOURTH MEANS ASSOCIATED WITH ONE OF SAID ELONGATED MEMBERS FOR COOPERATING WITH SAID THIRD MEANS; A METAL BEARING PLATE ON THE SURFACE OF SAID MEANS; MEANS FOR ORIENTING AND SECURING THE PLATE; AND MEANS ON THE PLATE FOR HOLDING THE BLADE IN PLACE.

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