US3324546A - Permanently assembled safety razor - Google Patents

Permanently assembled safety razor Download PDF

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Publication number
US3324546A
US3324546A US431378A US43137865A US3324546A US 3324546 A US3324546 A US 3324546A US 431378 A US431378 A US 431378A US 43137865 A US43137865 A US 43137865A US 3324546 A US3324546 A US 3324546A
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blade
base
clamp
razor
clamping
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US431378A
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Jose A Chavez
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Jose A Chavez
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26BHAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B21/00Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
    • B26B21/02Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor involving unchangeable blades
    • B26B21/06Safety razors with fixed blade, e.g. with moulded-in blade

Description

mm 13, 1%? A. CHAVEZ 3,324,546
PEHMANENTLY ASSEMBLED SAFETY RAZOR Filed Feb. 9, 1965 j/VVEJV'I'QR Mass 1% Wm VEZU 3,324,546 PERMANENTLY ASSEMBLED SAFETY RAZOR Jose A. (Thavez, 12892 Adams St., Garden Grove, Calif. 92641 Filed Feb. 9, 1965, Ser. No. 431,378 Qlaims. (til. 30-67) This invention relates to safety razors and more particularly to an improved permanently assembled form thereof.
The principal objects of the invention are to provide a safety razor assembly comprising a handle and a holding means mounted thereon for a type of double-edge razor blade commercially available therefor which is permanently assembled with the blade and adapted thereby for a limited use and subsequent disposal as a unit, in which the blade holding means is composed of few parts, of simple design and capable of economical production, in which the parts are adapted for snap-in permanent assembly with each other, and in which the handle means is designed to be available as a storage means for a limited supply of shaving cream or other article.
With the foregoing objects in view, together with such additional objects and advantages as may subsequently appear, the invention resides in the parts and in the construction, combination and arrangement of parts described, by way of example, in the following specification of a presently preferred embodiment of the invention, reference being had to the accompanying drawings which form a part of said specification and in which drawings:
FIG. 1 is a top plan view of a safety razor embodying the present invention with portions thereof broken away to show detail-s of interior construction,
FIG. 2 is a sectional view taken on the line 2-2 of FIG. 1, a portion of the handle component being shown in full lines.
FIG. 3 is a transverse sectional view taken on the line 3-3 of FIG. 1,
FIG. 4 is a fragmentary side elevational view of the head portion of the razor with portions broken away to show interior construction, and
FIG. 5 is an exploded view of the parts of the razor prior to assembly with the blade, the blade being also shown as a component of the exploded view.
Referring to the drawings, the blade B is a well-known form of double-edge safety razor blade made of resilient steel and having a medial longitudinally extending slot S extending therethrough and including a widened center portion C and other widened portions E, E adjacent the opposite ends of the slot for reception of blade positioning instrumentalities of the various forms of razors in which this particular form of blade is adapted for use. Additionally, the corners of the blade are formed as recesses -R affording clearance for confining means on the razor assembly.
The blade holding means of the present invention comprises a handle l, a blade supporting base 2, and a blade clamp 3, all of said parts being formed of appropriately molded plastic and being arranged for non-releasing snap-in interlocking assembly with each other and with the blade B as will now be explained.
The handle ll comprises an elongated, hollow, slightly frusto-conical hand grip portion 4 open at the large end thereof and having the opposite end closed by an integrally formed end wall portion 5 which includes on the outer surface thereof diametrically oppositely extending ribs 6, 6 and an axially disposed hollow post portion 7 which terminates in a closed end portion 8 of frusto-conical configuration with the smaller end thereof constituting the distal end of said post portion and with Patented June H3, 1967 the larger end 8 of said frusto-conical end being of slightly larger diameter than the body portion of said post portion and combining therewith to form an annular ledge 9 spaced from the surface of the end wall 5. The exterior of the handle may be ornamented in any desirable manner or provided with a suitable non-slip surface as suggested by the vertically extending grooves thereon.
The blade base 2 is a plastic molding of generally rectangular configuration in plan and of slightly greater length and width than the blade B. It is provided with a central hole It) extending therethrough which is of greater diameter than the larger diameter portion 8 of the post end 8 and in which the post portion 7 of the handle is received. The under face of the blade base is provided with grooves 11, 11 which are complementary to and receive the ribs 6, 6 to hold the blade base against rotative movement on the handle and to hold it centered with respect to the post 7.
The upper face 12 of the blade base 2 is convexly curved as viewed in end elevation and inwardly from each side edge thereof is provided with one each of a pair of parallel ribs 13, 13 which are spaced apart from each other a distance slightly less than the width of the blade B and are of a height above the top surface of the base to position the blade edges therefrom at the correct spacing to permit the curved side edges 14, 14 of the base top surface to serve as guard means to position .the blade edges correctly with respect to the skin surface when in use and also to protect the blade edges from contact with hard surfaces and being dulled thereby. The blade base adjacent the ends thereof is further provided with holes 15, 15 extending therethrough parallel to the hole 10 and disposed in the medial longitudinal line of the base 2, said holes being spaced from the hole 10 a distance equal to the distance between the center widened portion C and the other widened portions E, E in the blade. At each end, the blade base 2 is provided with a pair of slots 16, 16, the pairs being spaced from each other a distance which is only slightly greater than the distance longitudinally of .the blade between the recesses R thereof.
The blade clamp 3 comprises a plastic molding of rectangular configuration as viewed in plan, of the same length as the base 2 but of slightly lesser width than the width of the blade B. In transverse cross section (see FIGS. 2 and 3) it is of modified crescent shape and the inner or blade engaging surface 17 thereof is of such convex curvature that when pressed into blade engaging position, the side edges l8, 18 thereof engage the blade outwardly of the ribs 13, 113, and press them toward the blade base, causing the blade to assume an arched configuration as shown in FIGS. 2 and 3. The said inner face of the clamp member 3 is further provided with a pair of hollow post elements 19, 19 formed integrally there with and which are disposed so as to pass through the widened slot portions E, E of the blade and thence through the holes 15, 15 in the base 2. These post elements terminate in distal ends of frusto-conical configuration which are disposed with the larger diameters thereof forming ledges 20, 20 and the smaller diameters thereof forming the distal ends of said posts. The holes 15, 15 are slightly smaller than the larger diameter of the frustoconical end portions and the fact that the posts are hollow and the plastic material slightly resilient, enables the post elements to be forced through the holes 15, 15 until the ledges 2t 20 extend beyond the opposite face of the blade base and expand to their normal diameter to permanently lock the clamp element, the blade and the blade base together in a unit as best shown in FIG. 3, the re action of the thus stressed blade serving constantly to tend to move the base and clamp away from each other and serving to hold the parts in tight assembly. The clamp member 3 is further provided with depending lugs 21 at the corners which slidingly engage the recesses 16 as shown in FIGS. 1, 2 and 3. The clamp member 3 is further provided with a central hole 22 which is disposed in alignment with the center opening C in the blade and a hole in the blade base 2, said hole 22 being slightly smaller in diameter than the larger diameter of the frustoconical end 8 of the post 7. On pressing a preassembled unit comprising a base 2, a blade B and a clamp member 3 onto the post 7, the frusto-conical end will yield inwardly while going through the hole 22 and when the subassembly has been pressed on to said post to the point at which the ledge 9 extends above the outer surface of the clamp element 3, the post will expand to its normal position permanently locking the assembly in place on the handle. If desired, of course, the base 2 can first be placed on the handle 1, the blade B placed on the base, and the clamp member 3 placed on the blade and the unit snapped together in a single operation. The preferred mode of assembly is to invert the clamp element on a suitable holding surface, place a blade thereon, place the base element on the blade and then insert the handle and by pressure downwardly on the handle effect the snap-in engagement of the entire razor assembly. It is particu larly to benoted that the clamp member and blade supporting base are held together adjacent each end thereof and at the midlength thereof by the respective interengaging means thus permitting the use of extremely light weight plastic parts of limited strength to be employed for the blade base and the clamping member without danger that the force exerted by the bowed, resilient blade would cause warping of those parts.
Thus there has been provided a safety razor assembly composed of few parts of simple design which can be quickly assembled into a usable razor for a single use and then be discarded. If desired, the hollow handle can be employed to hold a package containing a supply of shaving cream sufficient for one or two shaves or for other materials. In general, razors of this type are intended to be packaged for dispensing by vending machines placed in washrooms in traffic terminals and like locations for the convenience of travelers. It will be noted that the design is simple and that all of the parts lend themselves to economical molding procedures, wherefore, the various parts can be produced in quantity by injection molding and that the assembly of the parts into the completed razors is such as to require only minimum skill, it being noted that the last described mode of assembly is one lending itself to assembly by machine means.
While in the foregoing specification there has been disclosed a presently preferred embodiment of the invention, the invention is not to be deemed to be limited to the precise details of construction thus disclosed by way of example and it will be understood that the invention includes as well all such changes and modifications in the parts and in the construction, combination and arrangement of parts as shall come within the purview of the appended claims.
I claim:
1. In a permanently assembled safety razor, a handle and a blade holding means permanently assembled therewith by interengaging snap-in devices, said blade holding means comprising a blade supporting base and a blade clamping member cooperating therewith to engage opposite sides of a double edged, resilient razor blade and further having interengaging devices adjacent each end thereof affording snap-in, permanent assembly of said base and clamp member with a razor blade clamped therebetween; the portions of said base and clamping member which engage the blade being so shaped as to cause the blade to assume an arched form when said base and clamping member are permanently interengaged, said first-named interengaging devices additionally serving to clamp said base and clamping member together at a point intermediate said second-named interengaging devices.
2. A safety razor as claimed in claim 1 in which a component of said first-named interengaging devices is carried by said handle and extends through a complementary opening in one of the components of said blade holding means and effects permanent snap-in intercngagement with the other component of said blade holding means.
3. A safety razor as claimed in claim 1 in which said first named interengaging devices includes a hollow post element on said handle and having a compressible circumferential ledge and in which said clamping element and said blade supporting base includes aligned centrally disposed holes extending therethrough for reception of said post element, the one of said holes in said clamp element being of a diameter less than the major diameter of said ledge portion, and in which the material of which said post portion is formed is sufficiently resilient to allow said ledge to be radially compressed incident to passage through said hole and then to snap out into nonreleasable overlying engagement on the top surface of said cap element.
4. A safety razor as claimed in claim 1 in which said clamp element adjacent each end of the blade engaging surface thereof is provided with one each of a pair of hollow post elements each having a circumferential ledge adjacent to the distal end thereof, and in which said blade supporting base is provided with a pair of holes extending therethrough complementary to said pair of post elements, each of said holes being of slightly less diameter than the major diameter of said ledges, said posts being formed of material which is sufficiently resilient to allow said ledges to be radially compressed incident to passage through said holes and then to snap out into underlying, non-releasable engagement of said ledges with said base and resultant permanent assembly of said base and clamp element with each other.
5. A safety razor as claimed in claim 3 in which said handle and said blade supporting base are provided with complementary interengaging surfaces so disposed relative to the axial line of said hollow post element as to prevent relative movement between said blade supporting base and said handle about the axial line of said post.
References Cited UNITED STATES PATENTS 1,116,448 11/1914 Lawson 30-68 1,830,576 11/1931 Tornkvist 30-68 1,917,220 7/ 1933 Grothe 30-68 2,018,042 10/1935 Thompson 30-68 2,911,711 11/1959 Loughlin 30-32 3,070,883 1/1963 Grathwohl 30-32 3,079,685 3/1963 Schully 30-72 3,154,852 1l/1964 Westlake 30-51 FOREIGN PATENTS 870,960 1/ 1942 France.
905,581 3/1954 Germany.
613,247 11/1948 Great Britain.
WILLIAM FELDMAN, Primary Examiner.
MYRON C. KRUSE, Examiner.

Claims (1)

1. IN A PERMANENTLY ASSEMBLED SAFTETY RAZOR, A HANDLE AND A BLADE HOLDING MEANS PERMANENTLY ASSEMBLED THEREWITH BY INTERENGAGING SNAP-IN DEVICES, SAID BLADE HOLDING MEANS COMPRISING A BLADE SUPPORTING BASE AND A BLADE CLAMPING MEMBER COOPERATING THEREWITH TO ENGAGE OPPOSIDE SIDES OF A DOUBLE EDGED, RESILIENT RAZOR BLADE AND FURTHER HAVING INTERENGAGING DEVICES ADJACENT EACH END THEREOF AFFORDING SANP-IN, PERMANENT ASSEMBLY OF SAID BASE AND CLAMP MEMBER WITH A RAZOR BLADE CLAMPED THEREBETWEEN; THE PORTIONS OF SAID BASE AND CLAMPING MEMBER WHICH ENGAGE THE BLADE BEING SO SHAPED AS TO CAUSE THE BLADE TO ASSUME AN ARCHED FROM WHEN SAID BASE AND CLAMPING MEMBER ARE PERMANENTLY INTERENGAGED, SAID FIRST-NAMED INTERENGAGING DEVICES ADDITIONALLY SERVING TO CLAMP SAID BASE AND CLAMPING MEMBER TOGETHER AT A POINT INTERMEDIATE SAID SECOND-NAMED INTERENGAGING DEVICES.
US431378A 1965-02-09 1965-02-09 Permanently assembled safety razor Expired - Lifetime US3324546A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3703764A (en) * 1971-03-15 1972-11-28 Gillette Co Razor blade assembly
US3724070A (en) * 1971-03-15 1973-04-03 Gillette Co Dual razor blade assembly
US3786563A (en) * 1971-08-31 1974-01-22 Gillette Co Shaving system
US3832432A (en) * 1972-06-29 1974-08-27 Gillette Co Method of razor blade unit assembly
US3832774A (en) * 1971-03-15 1974-09-03 Gillette Co Razor blade assembly
FR2377256A1 (en) * 1977-01-17 1978-08-11 Morris Ag SHAVER
US4422237A (en) * 1982-02-25 1983-12-27 The Gillette Company Razor handle

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1116448A (en) * 1913-01-14 1914-11-10 William E Lawson Safety-razor.
US1830576A (en) * 1931-04-09 1931-11-03 Erik G Tornkvist Safety razor
US1917220A (en) * 1929-11-18 1933-07-11 William J Cameron Safety razor
US2018042A (en) * 1933-04-18 1935-10-22 Andrew F Thompson Safety razor
FR870960A (en) * 1940-05-11 1942-04-01 Improvements to shaving devices
GB613247A (en) * 1946-06-13 1948-11-24 Harold William Green Improvements in or relating to safety razors
DE905581C (en) * 1951-07-04 1954-03-04 Hans Frink razor
US2911711A (en) * 1957-04-12 1959-11-10 John P Loughlin Disposable safety razor
US3070883A (en) * 1959-06-09 1963-01-01 Grathwohl Kenneth Tuthill Disposable razor
US3079685A (en) * 1958-08-12 1963-03-05 John T Scully Safety razors with a flexible blade and relative blade and guard adjustment
US3154852A (en) * 1961-11-29 1964-11-03 Jr Edward B Westlake One-piece safety razor

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1116448A (en) * 1913-01-14 1914-11-10 William E Lawson Safety-razor.
US1917220A (en) * 1929-11-18 1933-07-11 William J Cameron Safety razor
US1830576A (en) * 1931-04-09 1931-11-03 Erik G Tornkvist Safety razor
US2018042A (en) * 1933-04-18 1935-10-22 Andrew F Thompson Safety razor
FR870960A (en) * 1940-05-11 1942-04-01 Improvements to shaving devices
GB613247A (en) * 1946-06-13 1948-11-24 Harold William Green Improvements in or relating to safety razors
DE905581C (en) * 1951-07-04 1954-03-04 Hans Frink razor
US2911711A (en) * 1957-04-12 1959-11-10 John P Loughlin Disposable safety razor
US3079685A (en) * 1958-08-12 1963-03-05 John T Scully Safety razors with a flexible blade and relative blade and guard adjustment
US3070883A (en) * 1959-06-09 1963-01-01 Grathwohl Kenneth Tuthill Disposable razor
US3154852A (en) * 1961-11-29 1964-11-03 Jr Edward B Westlake One-piece safety razor

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3703764A (en) * 1971-03-15 1972-11-28 Gillette Co Razor blade assembly
US3724070A (en) * 1971-03-15 1973-04-03 Gillette Co Dual razor blade assembly
US3832774A (en) * 1971-03-15 1974-09-03 Gillette Co Razor blade assembly
US3786563A (en) * 1971-08-31 1974-01-22 Gillette Co Shaving system
US3832432A (en) * 1972-06-29 1974-08-27 Gillette Co Method of razor blade unit assembly
FR2377256A1 (en) * 1977-01-17 1978-08-11 Morris Ag SHAVER
US4422237A (en) * 1982-02-25 1983-12-27 The Gillette Company Razor handle

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