|Publication number||US2566493 A|
|Publication date||Sep 4, 1951|
|Filing date||Feb 4, 1949|
|Priority date||Feb 4, 1949|
|Publication number||US 2566493 A, US 2566493A, US-A-2566493, US2566493 A, US2566493A|
|Inventors||Ladd Otto H|
|Original Assignee||Ladd Otto H|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (3), Referenced by (6), Classifications (8)|
|External Links: USPTO, USPTO Assignment, Espacenet|
Sept. 4, 1951 o. H. LADD BLADE HOLDER Filed Feb. 4. 1949 /2 $g ia9'.
,4 /4 IIIIIIIIIIIIIIII/ 22 INVENTOR. 0/70 H L a cZcZ Patented Sept. 4, 195 1 UNITED STATES PATENT OFFICE BLADE HOLDER I Otto H. Ladd, Lancaster, Calif. Application February 4, 1949, Serial No. 74,544
1 Claim. (01. 30-320) This invention relates to blade holders, and more particularly to a holder for safety razor blades to hold such blades for use as scrapers or knives.
It is among the objects of the invention to provide an improved safety razor blade holder having a size only slightly greater than the size of the blade itself, which utilizes a minimum number of simple parts, is strong and durable in construction, economical to manufacture, easy to use, and to disassemble and reassemble for the renewal of the blade therein, and which holds the blade in either a retracted and guarded position or in a projected, operative position and is so constructed that the blade can be easily and quickly moved from one to the other of such positions.
Other objects and advantages will become apparent from a consideration of the description and the appended claim, in conjunction with the accompanying drawing, wherein:
Figure 1 is a top plan view of the assembled blade holder;
Figure 2 is a bottom plan view of the assembled blade holder;
Figure 3 is a longitudinal cross-section taken substantially on line 3-3 of Figure 1;
Figure 4 is a transverse cross-section taken substantially on the line 4-4 of Figure l; and
Figure 5 is a plan view of one of the inner sides of one of the two blade holding plates of the holder showing a safety razor blade in retractedposition on such plate.
With continued reference to the drawing, the improved safety razor blade holder comprises, in general, two elongated, rectangular plates Ill and H, disposable in face-to-face relationship with a safety razor blade l2 sandwiched therebetween, a clamp screw l3 extendable through the plates and the blade and a nut 4 for the clamp screw.
The plate IE1 is provided on one face with respective lugs or projections 15 at its four corners. Each of these lugs is substantially rectangular in form and projects above the surface of the plate a distance substantially equal to the thickness of the blade I2 plus the thickness of the opposing plate II. The two lugs I5 at each end of the plate are spaced apart to provide therebetween a rectangular recess l6 elongated in the direction of the width of the plate and the corresponding lugs at the opposite ends of the plate are spaced apart a distance substantially equal to the length of the safety razor blade 12, to provide at each end of the plate 10 a transverselyextending shoulder which is engageable with the end of a blade to restrain the blade from turning or becoming skewed in the holder. At its midlength location, the plate i0 is provided with a transversely elongated slot ll.
The elongated, rectangular plate I l is provided with respective recesses [8 at its four corners. Each of the recesses 18 is of a size and shape to receive a corresponding lug [5 on the plate In, the tongues [9, between the recesses ill at the opposite ends of the plate ll, fitting into the recesses [6 in plate In Witha close fit and the inner edges of the recesses 18 fitting against the inner shoulders provided by the lugs IE to hold the plate H securely against movement relative to the plate [0, when the two plates are operatively associated, as illustrated in Figures 1 and 2.
The plate I I is provided at its mid-length location with a transversely extending, elongated slot H, which registers with the slot H in the plate 10 when the two plates are assembled together.
The double edged razor blade l2, illustrated in Figure 5 is of well known or conventional construction and is provided with a longitudinallyextending slot 20 at its mid-length location and with a centrally-disposed, substantially circular aperture 2|.
The clamp screw 13 has a screw-threaded shank 22 which is extendable through the slots I1 and I! in the plates in and II and through the aperture 2| in a blade l2 disposed between the two plates, and has on one end of the shank 22 an enlarged flat head 23 which bears against the outer surface of one of the plates when the clamp screw is operatively assembled with the plates in the manner described above, and as is particularly illustrated in Figures 3 and 4.
The enlarged, flat nut I4 is threaded onto the shank and bears against the outer surface of the other plate in opposition to the head 23 to clamp the two plates together between the head and the nut and to incidentally clamp the blade l2 between the plates. The head 23 may be provided at its underside with a circular boss 24 and the nut I4 is provided on its plate-contacting side with a chamfered boss 25 to facilitate loosening the nut on the screw when it is desired to separate the plates to renew the blade therein.
The head 23 and the nut 24 are both preferably provided with concave outer sides to provide a convenient finger grip for holding the blade holder between the thumb and forefinger of the person using the device.
By loosening the nut l4 and sliding the screw lengthwise of the slots I7 and 11, the blades can be moved between its projected or operative poat its opposite longitudinal specific forms without departing from the spirit 5 or essential characteristics thereof. The present embodiment is, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention beingindicated by the appended clairnrather than by theforegoingde j o scription, and all changes which come within the meaning and range of equivalency of the claim;
are, therefore, intended to be embraced therein What is claimed is:
A safety razor blade holder, comprisinga-pairalfl. V f
of opposed plates, said plates being provided at their longitudinal centers With""the' elongatedv" transverse slots, spaced lugs formed upon the; inner face of one plate at its ends, tongues formed uponthe ends of t he other plateto interlock with 20 the named lugs} sa id' 'piafiesj havingTZa'Ltr ans-LI verse guide spaceibetweenfthern whi is ope s, l a ldouble-edge pe ie-an e lad arra With ease bvggcrewing up the nut.
4 able transversely therein for moving its edges through the open edges of the space and having a reduced opening at its longitudinal center, a pin having a head to bear against the outer face of one plate and extending through the reduced opening of the blade to shift the blade transversely and slideable within the transvers slots, and a nut having screw-threaded engagement Wlthf the pin and sbearing against gtheg outer face of .ithe otherwplateg the ariran'gement being such that the plates and blade are clamped together OTTO H. LADD.
V ItEFERENCES CITED The follovving references are of record in the file'of this patent? UNITED STATES PATENTS
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US879446 *||Jun 30, 1906||Feb 18, 1908||Edward J Deneen||Holder for safety-razor blades.|
|US2237331 *||Jun 28, 1938||Apr 8, 1941||Conrad Razor Blade Co Inc||Cutting device|
|US2336284 *||Mar 24, 1941||Dec 7, 1943||Jennings Nelson||Razor blade holder|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US4048719 *||Feb 17, 1976||Sep 20, 1977||Mary Kay Thompson||Carton opener|
|US4713884 *||Sep 8, 1986||Dec 22, 1987||Dunnagan Cecil A||Carpet pad knife|
|US4729167 *||Oct 24, 1986||Mar 8, 1988||Peter De Rose||Cutting tool for cardboard boxes|
|US6205667 *||Feb 15, 1999||Mar 27, 2001||Spyderco, Inc.||Knife with a non-rotating retractable blade|
|US8584493 *||Apr 29, 2011||Nov 19, 2013||Dirak Dieter Ramsauer Konstruktionselemente Gmbh||Actuating lever which can be pivoted into a recess|
|US20130098123 *||Apr 29, 2011||Apr 25, 2013||Armin Gorontzi||Actuating lever which can be pivoted into a recess|
|U.S. Classification||30/162, 70/456.00R, 30/335, 30/320, 30/339|