|Publication number||US1434388 A|
|Publication date||Nov 7, 1922|
|Filing date||Nov 8, 1920|
|Priority date||Nov 8, 1920|
|Publication number||US 1434388 A, US 1434388A, US-A-1434388, US1434388 A, US1434388A|
|Inventors||Hughes Joseph O|
|Original Assignee||Hughes Joseph O|
|Export Citation||BiBTeX, EndNote, RefMan|
|Referenced by (18), Classifications (7)|
|External Links: USPTO, USPTO Assignment, Espacenet|
J. 01 HUGHES.
APPLICATION FILED NOV. 8. 1920.
Patented Nov. 7, 11922,
' Patented Nov. I 7, 31%)22.
entree STATES retiree PATENT @FFHCE.
JOSEPH 0. HUGHES, F MURPHYSBORO, ILLINOIS.
Application filed November 8, 1920. Serial No. 422,613.
To all whom it may concern:
Be it known that l, Josnrrr O. HUGHES, a citizen of the United States, residing at Murphysboro, in the county of Jackson and State of Illinois, have invented new and useful Improvements in Knives, of which the following is a specification.
This invention relates to knives, wherein the blade is arranged to slide within the handle and to be wholly concealed when not in use, the invention residing in the con struction, whereby the blade may be held fixed relatively to the handle in any desired position.
The nature and advantages of the invention will be better understood when the following detail description is taken in connection with the accompanying drawings, the invention residing in the construction, combination and arrangement of parts as claimed.
blade 11. The handle is formed from a single piece of material, the opposite longitudinal edges of which are folded inwardly above the body portion of the handle, the;
edges 12 being spaced apart for the major portion of their length to provide a slot 13. The folding of the edges 12 provides channels in which the blade 11 is arranged to slide, the blade being provided with a headed I stud it by means of which the blade is manipulated} The handle is preferably of a len h slightly greater than the length of the b ade so that when the latter is retracted positioned within the handle it will not pro ect therefrom to out the pocket in which the knife is carried, or the fingers of the user. Projecting from one edge of the slot adjacent one end of the handle, is a lug 1-5 which bearsagainst the opposite edge of the slot, closing the slot adjacent one end of the handle. This lug constitutes a stop for the stud 15, and consequently limits the adjustment of the blade when projected from the handle.
With a view of holding the blade in any deslred position along the length of the handle, I provide the underside of the inturned edges with a plurality of vnotches 16. A leaf spring 18 is terminally secured to the blade l7,the opposite extremity of the spring being curved in the direction of the notches 16, the curved extremity 19 normally engage mg said notches to hold the blade against movement relative to the handle. When it IS desired to project the blade from the handle, the head of the stud is depressed thus moving the curved end of the spring out of engagement with the notches. With the parts so arranged, the blade can be readtill) Wit ily adjusted in either direction and subsequent adjustment the stem is removed from the headed stud whereby the spring moves its curved extremity into engagement with the proper notch to hold the blade in its adjusted position.
A pin 20 extends transversely through the handle adjacent one end thereof, and is disposed with respect to the adjacent terminal of the knife blade to be engaged by the latter and limit the movement of the blade in one direction.
While it have shown the described what i consider the preferred embodiment of the invention, ll desire to have it understood that T do not limit myself to this exact construction, inasmuch as such changes may be resorted to when desired as fall within the sec e of what is claimed.
aving thus described my invention what if claim as new is v l. A knife comprising a handle formed from a single sheet of material having its free. edges spaced to provide a longitudinal slot, a blade arranged for sliding movement within the handle, a stud projecting from the handle through a slot form'anipulating the blade, ahead carried by the stud, cooperating means carried by the blade and handle for holding the blade in different adjusted positions and a lug projecting from one of the said longitudinal edges of the handle to close one end of the slot to limit illtl its longitudinal ed s spaced to define a slot, a knife blade sli able Within the handle, a stud carried by the blade and projectin through the slot, a head carried by the stu notches formed along one of said longitudinal edges, a leaf spring supporting the stud on said blade and having an ofi'set portion adapted to engage said notches for holding the blade in difierent adjusted positions,
meaaea means for limiting the movement of the 10 blade in one direction, and a lug projecting from one of said edges of the handle to close one end of the slot and thereby limit the movement of the blade in the opposite direction.
In testimony whereof I aflix my signature.
JOSEPH O. HUGHES.
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US2548797 *||Nov 20, 1946||Apr 10, 1951||Cons Sewing Machine & Supply C||Seam ripping knife|
|US2608890 *||Jun 10, 1948||Sep 2, 1952||Albert Andrews||Resilient casing with slidable tool|
|US3044081 *||Oct 26, 1959||Jul 17, 1962||Robinson Jr Jewell||Pliers|
|US3079686 *||Dec 22, 1961||Mar 5, 1963||Christy Earl B||Handle construction for sliding blade knives|
|US3167861 *||Nov 18, 1963||Feb 2, 1965||Knebel Oliver P||Tool|
|US3185483 *||Jun 6, 1963||May 25, 1965||Klynman Leonard H||Golfer's turf-repairing implement and carrier therefor|
|US3651571 *||Dec 23, 1969||Mar 28, 1972||Better Cutting Tools Newport L||Carpet cutter blade holder|
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|US4023271 *||Aug 8, 1975||May 17, 1977||Franco Roy P Di||Meat trimmer and scraper assembly|
|US4063356 *||Aug 23, 1976||Dec 20, 1977||Plas Plugs Limited||Hand knife|
|US4628717 *||Oct 3, 1985||Dec 16, 1986||Blum Alvin S||Protective key holder|
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|US7604647 *||Oct 22, 2004||Oct 20, 2009||Medical Instrument Development Laboratories, Inc.||Ophthalmic cannula insertion tool and method|
|US8402663 *||Aug 11, 2010||Mar 26, 2013||William J. McHenry||Two-piece hand tool|
|US8875405||Apr 19, 2012||Nov 4, 2014||Oasis Medical, Inc.||Micro surgical knife with safety feature|
|US20120036721 *||Aug 11, 2010||Feb 16, 2012||Mentor Group, L.L.C.||Two-Piece Hand Tool|
|U.S. Classification||30/320, 30/162, 15/184|
|International Classification||B26B1/00, B26B1/08|