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Publication numberUS2736959 A
Publication typeGrant
Publication dateMar 6, 1956
Filing dateAug 28, 1952
Priority dateMay 27, 1952
Publication numberUS 2736959 A, US 2736959A, US-A-2736959, US2736959 A, US2736959A
InventorsFriedrich Simon Carl, Willy Strathmann
Original AssigneeFriedrich Simon Carl, Willy Strathmann
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Pocket knives
US 2736959 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

March 6, 1956 C- F- SIMON ET AL 2,736,959

POCKET KNIVES Filed Aug. 28, 1952 United States Patent POCKET KNIVES Carl Friedrich Simon and Willy Strathmann, Solingen, Germany Application August 28, 1952, Serial No. 306,795 Claims priority, application Germany May 27, 1952 3 Claims. (Cl. 30123) This invention relates to pocket knives with one or more blades, its object being to provide improved constructions in which advertising matter, such as pictorial illustrations or texts, is visible thereon and is changed when the pocket knife blades are opened and closed.

According to the present invention the advertising matter is carried on a slidable plate arranged in a recess between one frame plate and a corresponding side plate of the pocket knife made of transparent material or having windows therein. The slidable plate is coupled by links to the tang of the knife blade so as to move longitudinally as the blade is opened and closed.

When the blade is moved from closed to open position, or vice versa, the illustrations or texts which were previously hidden become visible, or vice versa.

The invention can also be applied to knives the blades of which are placed under the tension of a spiral spring arranged to pull the blade into open position.

The invention is illustrated in two embodiments in the accompanying drawings, in which:

Fig. l shows a iirst embodiment of pocket knife, seen in plan view and with the blade closed. Fig. 2 shows the same pocket knife in plan view with the blade opened. Fig. 3 shows the same knife with closed blade and seen in sectional view on the line A-A of Fig. 5. Fig. 4 shows the same knife with opened blade and seen in sectional view on the line A-A of Fig. 5. Fig. 5 shows the same knife, to an enlarged scale, seen in section on the line a-a of Fig. 2. Fig. 6 shows in central longitudinal section a second embodiment of pocket knife, one side plate of which has window-like openings.

In Figs. 1 to 5, 1, 2 indicate transparent side plates secured on frame plates 3, 4, and 5 is a blade of the pocket knife operating under the action of a leaf spring 6.

The frame plates and side plates are secured together by means of rivets 7, 8. A recess 9 is provided at the underside of the plate 1, and for the purpose of partial masking there is provided also a thin-walled opaque plate 10 having window-like openings 11, 12. A plate 13, which in the embodiment illustrated carries the picture of a bicycle, an automobile, a sailing boat and an aeroplane is longitudinally slidable in the recess 9 and is coupled to the blade 5 by means of two linking levers 14, 15 which move in an aperture 16 of the frame plate 1. Upon opening of the knife blade 5 the plate 13 is moved in the recess 9 such that the pictures of a bicycle and an automobile hitherto visible in the window-like openings 11, 12 of the masking plate 10 move behind the plate 10 and are replaced by illustrations of a sailing ship and aircraft. Upon closing the knife blade 5, the plate 13 is pushed back again into the original position, whereby the original pictures become visible in the window-like openings 11, 12 of the plate 10.

Thus, in this embodiment the slidable plate carrying the advertising matter moves behind a masking plate in the windows of which one or the other portion of the advertising matter is displayed according to whether the knife ICC blade is in open or closed position. The external portions of the handle of the knife, i. e. the two frame plates 1, 2 are transparent and so do not obscure visibility of the windows and the advertising matter appearing therein.

In the second embodiment of the invention, hereinafter described with reference to Fig. 6, the two frame plates are made non-transparent and are provided with windows so that there is now no need for a masking plate, the frame plate 1 serving for the same purpose. The arrangement of the parts is otherwise exactly as in the embodiment of Figs. 1 to 5.

We claim:

1. A pocket knife comprising two frame plates secured together in spaced and parallel position, one of said frame plates being apertured, a pivot between the frame plates near one end thereof, a tanged knife blade pivotally mounted on the pivot between the frame plates for movement between closed and open positions, a side plate of opaque material having two openings therein to form windows secured externally on and in contact with the apertured frame plate and defining therewith a longitudinal recess into which the windows open, a movable plate bearing representations of advertising matter arranged in said recess and longitudinally slidable therein such that in the limit positions of sliding of the plate within the recess different portions of the advertising matter thereon become visible in the windows of the side plate, and connecting linkage disposed movably in the aperture of the frame plate and connected pivotally to the tang of the knife blade and to the slidable plate, whereby movement of the blade between its open and closed positions causes movement of the slidable plate to display different portions of the advertising matter in the windows.

2. A pocket knife comprising two frame plates secured together in spaced and parallel position, one of said frame plates being apertured, a pivot between the frame plates near one end thereof, a tanged knife blade pivotally mounted on the pivot between the frame plates for movement between closed and open positions, a masking plate of opaque material having two openings therein to form windows secured externally on and in contact with the apertured frame plate and defining therewith a longitudinal recess into which the windows provide an opening, a transparent side plate secured externally on the masking plate, a movable plate bearing representations of advertising matter arranged in said recess and longitudinally slidable therein such that in the limit positions of sliding of the movable plate within the recess different portions of the advertising matter thereon become visible in the Windows of the masking plate, and connecting linkage disposed movably in the aperture of the frame plate and connected pivotally to the tang of the knife blade and to the slidable plate, whereby movement of the blade between its open and closed positions causes movement of the slidable plate to display different portions of the advertising matter in the windows.

3. A pocket knife comprising two frame plates secured together in spaced and parallel position, one of said frame plates being apertured, a pivot arranged between the frame plates near one end thereof, a tanged knife blade pivotally mounted on the pivot between the frame plates for movement between closed and open positions, a leaf spring secured between the frame plates and abutting against the knife blade adjacent its pivot for urging the knife blade to snap into its closed and open positions, a side plate of opaque material having two openings therein to form windows secured externally on and in contact with the apertured frame plate and defining therewith a longitudinal recess into which the windows provide an opening, a movable plate bearing representations of advertising matter arranged in said recess and longitudinally slidable therein such that in the limit positions of sliding son.

of the plate within the recess different portions of the advertising matte'r'thereon become visible in the 'Windows of the side plate, and connecting linkage disposed movabl)l in the aperture of the frame plate and connected pivotally display different portions of the advertising matter in the windows.

References Cited inthe l of patent UNITD STATES PATENTS Milliken Ian. 15, -1867 Hermann Oct. 19, 1926 Swank Mar. 13, 1928 Lindblom Apr. 11, 1950

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US61229 *Jan 15, 1867 Improvement in pocket-knives
US1603914 *Jan 21, 1926Oct 19, 1926Max P HermannAutomatically-opening penknife
US1662405 *Nov 19, 1926Mar 13, 1928Swank Arthur HKnife handle
US2504076 *Mar 14, 1949Apr 11, 1950Welsh Mfg CoWriting instrument carrying telephone numbers
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2896348 *Mar 4, 1957Jul 28, 1959William L HerneWriting implement
US3093921 *Dec 15, 1959Jun 18, 1963Chr Olsen AktsWriting instrument with a holder containing a shiftable writing unit
US4466561 *Jun 18, 1982Aug 21, 1984Slaughter Knife Co., Inc.Belt buckle knife
US5125157 *Mar 8, 1991Jun 30, 1992Howard Durvyn MKnife with removable implement
US6044561 *Sep 16, 1998Apr 4, 2000Franklin Mint CompanyCombination pocket knife and locket
US6643961Oct 4, 2002Nov 11, 2003Structural Graphics LlcMulti-panel display system
US7036174 *Jun 3, 2002May 2, 2006Victorinox A.GOperational tools carrier
US7107686Feb 6, 2004Sep 19, 2006Buck Knives, Inc.Spring assist knife
US7140110Jun 4, 2004Nov 28, 2006Lake Ronald WFolding knife having a locking mechanism
US7296355Oct 12, 2004Nov 20, 2007Kai U.S.A., Ltd.Adjustable blade-assisting mechanism for a folding knife
US7313866Jan 31, 2006Jan 1, 2008Buck Knives, Inc.Spring assist knife
US7340838Jun 16, 2003Mar 11, 2008Kai U.S.A., Ltd.Folding knife with safety lock
US7395599Nov 18, 2004Jul 8, 2008Kai U.S.A., Ltd.Blade-assisting mechanism for a folding knife
US7458159Nov 14, 2005Dec 2, 2008Kai U.S.A., Ltd.Folding knife having a locking mechanism
US7506446Apr 16, 2004Mar 24, 2009Kai U.S.A., Ltd.Locking mechanism for a folding knife
US7774939Jan 28, 2005Aug 17, 2010Kai U.S.A., Ltd.Stud-lock knife
US8001693Jun 5, 2006Aug 23, 2011Onion Kenneth JClosable knife with opening mechanism
US8161653Nov 12, 2007Apr 24, 2012Leatherman Tool Group, Inc.Folding tool having a rotatable locking mechanism
US8307555May 3, 2011Nov 13, 2012Onion Kenneth JClosable knife with opening mechanism
DE19964441B4 *Dec 30, 1999May 26, 2011Victorinox AgTaschenmesser
DE19964441B8 *Dec 30, 1999Mar 1, 2012Victorinox AgTaschenmesser
EP1769892A1 *Sep 28, 2006Apr 4, 2007W.R. Case & Sons Cutlery CompanyStepped bushing for a pocket knife
Classifications
U.S. Classification40/661.7, 40/491, 40/661.12, 30/123, 30/155
International ClassificationB26B1/00, B26B1/10
Cooperative ClassificationB26B1/10
European ClassificationB26B1/10