US2810194A - Knife - Google Patents

Knife Download PDF

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Publication number
US2810194A
US2810194A US593692A US59369256A US2810194A US 2810194 A US2810194 A US 2810194A US 593692 A US593692 A US 593692A US 59369256 A US59369256 A US 59369256A US 2810194 A US2810194 A US 2810194A
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United States
Prior art keywords
blade
point
slot
cutting
tab
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Expired - Lifetime
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US593692A
Inventor
Philip H Unsinger
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Philip H Unsinger
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Application filed by Philip H Unsinger filed Critical Philip H Unsinger
Priority to US593692A priority Critical patent/US2810194A/en
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Publication of US2810194A publication Critical patent/US2810194A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26BHAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B1/00Hand knives with adjustable blade; Pocket knives
    • B26B1/02Hand knives with adjustable blade; Pocket knives with pivoted blade
    • B26B1/04Hand knives with adjustable blade; Pocket knives with pivoted blade lockable in adjusted position
    • B26B1/046Hand knives with adjustable blade; Pocket knives with pivoted blade lockable in adjusted position with a locking member acting in axial direction parallel to the pivot axis of the blade
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26BHAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B27/00Hand cutting tools not provided for in the preceding groups, e.g. finger rings for cutting string, devices for cutting by means of wires

Description

Oct. 22, 1957 P. H. UNslNGl-:R 2,810,194
KNIFE Filed June 25, 1956 INVEN TOR. Phi/fp' H Uns/'nger u) BYQMQQM;
ATroeNEYs United Sttes Patent O I 2,810,194 KNIFE Philip H. Unsinger, Fremont, Ohio Application June 25, 1956, Serial No. 593,692 3 Claims. (Cl. 30-321) This invention relates to a multiple purpose knife and has for its primary object to provide a tool that is simple and safe in its operation and can be made inexpensively.
Another object of the invention is to provide a tool particularly suitable for cutting threads and twine when the blade is in one position, and for cutting other and heavier objects and surfaces when the blade is in another position, and in which the tool handle itself may be used for many purposes.
Other objects and advantages of the invention will become apparent from the following detailed description of a preferred embodiment thereof, reference being had to the accompanying drawings, in which- Figure l is a side elevational view of a tool embodying the present invention, with the blade in housed position;
Figure 2 is a side elevational view of the tool with the blade in its extended position;
Fig. 3 is a section on line 3-3 of Fig. l;
Fig. 4 is a front elevational view;
Fig. 5 is an elevational view of a suitable blade;
Fig. 6 is a top view of the blade shown in Fig. 5; and
Fig. 7 is a fragmentary side view of a tool showing a modified form of blade lock.
Referring to the drawings, 10 designates a handle or body which may take any suitable configuration, but which preferably terminates in a relatively sharp tip 11. In one form of the invention designed especially for use by seamstresses, the tip of the handle is made of such dimensions that it can be inserted under basting threads and serve to remove them.
At its upper end the handle or body 10 is provided with a throat or diagonal opening or recess 12, having a relatively narrow entrance 13. A blade 14 is disposed in a generally central slot 15 in the upper portion of the body and is pivoted intermediate its ends on an axis or pivot 16, which preferably passes through the body of the blade centrally thereof.
Referring now to Figures 5 and 6 of the drawing, the blade 14 comprises an edge 17 that extends rearwardly from a sharp point. The body of the blade is contoured in such a manner that when it is swung to one of its normal positions about the pivot 16 no part of the body of the blade extends beyond the upper end of the body or housing 1t) and the point thereof is completely protected. The blade 14 is perforated centrally as at 18 to receive the pivot member 16, and at the opposite side of the pivot from the point is provided with an operating extension or tab 20. As is apparent from Figs. 1 and 2 the tab 20 always extends out of the slot 15 at the rear of the housing in such a position that it is readily -accessible to the user.
Any suitable means may be used to lock the blade 14 in a pre-selected position. In some instances the friction of the blade with respect to its pivot point is suiiicient to keep it from moving to the position in which the point is exposed, once it has been deliberately moved to the position in which the point is housed. In other instances a more positive lock may be desirable since the user may wish to store the tool with the blade in its housed position. In this case a more positive lock may be obtained by bending the tab 20 into a plane offset from the principal plane of the blade, and providing a recess 22 in the slot into which the offset portion can snap when it comes into registry.
Another simple lock is shown in Fig. 7 and includes a locking dog 30 pivoted on the blade tab 20 and having an ice end portion 31 that can be moved into a position of registry with a recess 32 in the body when the blade is in its housed position. When it is desired to release the lock and to move the blade to the position in which the point is exposed, the dog is rotated about its pivot to bring the end 31 ont of the recess 32 after which movement the blade is free to swing in the slot 15 to the position shown in Fig. 2 in which the point of the blade and its forward cutting edge are exposed.
It will be seen from Figs. l and 2 that the blade 14 has two definite positions of operation in which different functions are performed. When the blade is in such a position that the point of the blade is housed, its edge 17 is exposed in the recess or throat 12. The blade is then well suited for such purposes as cutting threads or twine. It will be noted that the force of such a cutting operation is taken by the blade on a line falling to the rear of the pivot 16 so that the force of cutting tends to move the blade counterclockwise or to retain it in its housed position. The free end of the body forming the upper part of the slot 13 acts as a hook to draw thread or twine into the slot 12 and against the edge 17 of the blade, so that the knife functions even though it is ,in its closed or safe position.
if the operator desires to expose the point of the blade, he moves it clockwise about the pivot by means of the operating tab 20 until the tab strikes against the bottom of the slot 15. The point and forward edge of the blade than protrudes or extends from the housing as shown in Fig. 2 and are then well suited for such cutting operations as are usually performed by an exposed sharp pointed blade. It will be seen from Fig. 2 that the cutting force tends to move the blade in a clockwise direction around the pivot or to retain it in its operative position. No force is set up by cutting which tends to move the blade into its housed position. Such movement must be made deliberately by the user, through the tab 20.
While the tool of the present invention has been disclosed in conjunction with a specific form and disposition of the parts, it should be readily understood that numerous modifications and changes may be made, particularly in the form of the housing, without departing from the scope of the invention as defined in the appended claims.
I claim:
l. A cutting tool comprising a handle or body having a projection from one end of the body forming with the body an elongated recess, a slot extending through the projection and into the adjacent end of the handle, a pointed blade pivotally mounted on the projection adjacent the restricted end of the recess, said blade being disposed in the-slot and extending in one position so that the pointed blade is covered by the tip of the projection and in another position in which the pointed blade is disposed upwardly of said projection, said blade having a tab on the end opposite said pointed end extending beyond said handle for changing the position of the blade from one position to the other.
2. A structure according to claim 1 in which there are means for locking the blade so that the point of the blade is covered by the tip of the projection.
3. A structure according to claim 2 in which the locking means for said blade comprises an offset portion of said blade tab and a cooperating registerable recess in said body, said recess communicating with said slot.
References Cited in the tile of this patent UNITED STATES PATENTS 2,555,142 Levin May 29, 1951 FOREIGN PATENTS 677,862 France Dec. 19, 1929
US593692A 1956-06-25 1956-06-25 Knife Expired - Lifetime US2810194A (en)

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Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3380159A (en) * 1966-02-25 1968-04-30 Emanuel A. Winston Cutting device
US4157617A (en) * 1978-02-27 1979-06-12 Frith Marvin E Animal skinning knife
US4455894A (en) * 1982-11-08 1984-06-26 Roberts Richard D Hand held opening apparatus
FR2540420A1 (en) * 1983-02-04 1984-08-10 Chaudeurge Jean Michel Device making it possible to cut sealed sachets or similar packagings as well as optionally to ensure mixing of the product they contain during use
FR2568162A1 (en) * 1984-07-26 1986-01-31 Preposreve Improvements to hand cutting tools of the type with a cutting head having a guiding nose
US4631829A (en) * 1985-09-03 1986-12-30 Pacific Handy Cutter, Inc. Hand-held safety holder for a single-edge razor blade for cutting a sheet or strand
EP0259520A1 (en) * 1986-09-18 1988-03-16 Mario Bruno Paper knife and staple puller head
US4802279A (en) * 1987-04-17 1989-02-07 Rocky Mountain Enterprises, Inc. Game hunting knife
US5046253A (en) * 1988-03-30 1991-09-10 Ireland William A Knives
EP0753385A1 (en) * 1995-07-14 1997-01-15 DBD Srl Cooking knife with two edged parts of only blade
USD381886S (en) * 1995-12-22 1997-08-05 Square One Rescue knife
US5706584A (en) * 1996-06-26 1998-01-13 Dbd Srl Single-blade cooking knife
US5765288A (en) * 1996-07-22 1998-06-16 Hagler, Jr.; Luther C. Dual method wallcovering creaser and trimmer apparatus
US6857192B1 (en) 2003-08-26 2005-02-22 Guy Summers Dual blade utility knife
US20050150115A1 (en) * 2002-05-15 2005-07-14 Hanna Robert J. Knife with partially exposed blade when closed
US20050235500A1 (en) * 2004-04-22 2005-10-27 Domenico Anthony J Lamina cutter
US20080016702A1 (en) * 2004-04-22 2008-01-24 Domenico Anthony J Lamina cutter with disposable guard
US7367876B1 (en) * 2006-11-13 2008-05-06 Denoff Dennis R Shellfish tool
US20080141481A1 (en) * 2006-12-01 2008-06-19 A. Richard S.E.N.C. Screw bit putty knife
US20090178268A1 (en) * 2008-01-16 2009-07-16 Domenico Anthony J Box opener
USD615713S1 (en) * 2008-07-16 2010-05-11 James Archetti Pocket-sized retractable leash
US20110106123A1 (en) * 2008-02-05 2011-05-05 Lafauci Michael Two-part surgical device
US20140173914A1 (en) * 2012-12-21 2014-06-26 Hsiu-Man Yu Chen Cutter
US8856995B2 (en) 2006-12-01 2014-10-14 A. Richard Tools Co./Outils A. Richard Co. Screw bit putty knife
US9107695B2 (en) 2012-03-19 2015-08-18 Brolex Llc Surgical instruments and methods of use
USD833240S1 (en) * 2017-07-17 2018-11-13 Avraham Goldstein Combined knife and bottle opener

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR677862A (en) * 1929-07-04 1930-03-15 Tool for cutting packaging, strung or not, in any material, or string binding packages
US2555142A (en) * 1946-09-17 1951-05-29 Henry H Levin Cutter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR677862A (en) * 1929-07-04 1930-03-15 Tool for cutting packaging, strung or not, in any material, or string binding packages
US2555142A (en) * 1946-09-17 1951-05-29 Henry H Levin Cutter

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3380159A (en) * 1966-02-25 1968-04-30 Emanuel A. Winston Cutting device
US4157617A (en) * 1978-02-27 1979-06-12 Frith Marvin E Animal skinning knife
US4455894A (en) * 1982-11-08 1984-06-26 Roberts Richard D Hand held opening apparatus
FR2540420A1 (en) * 1983-02-04 1984-08-10 Chaudeurge Jean Michel Device making it possible to cut sealed sachets or similar packagings as well as optionally to ensure mixing of the product they contain during use
FR2568162A1 (en) * 1984-07-26 1986-01-31 Preposreve Improvements to hand cutting tools of the type with a cutting head having a guiding nose
US4631829A (en) * 1985-09-03 1986-12-30 Pacific Handy Cutter, Inc. Hand-held safety holder for a single-edge razor blade for cutting a sheet or strand
EP0259520A1 (en) * 1986-09-18 1988-03-16 Mario Bruno Paper knife and staple puller head
US4802279A (en) * 1987-04-17 1989-02-07 Rocky Mountain Enterprises, Inc. Game hunting knife
US5046253A (en) * 1988-03-30 1991-09-10 Ireland William A Knives
EP0753385A1 (en) * 1995-07-14 1997-01-15 DBD Srl Cooking knife with two edged parts of only blade
USD381886S (en) * 1995-12-22 1997-08-05 Square One Rescue knife
US5706584A (en) * 1996-06-26 1998-01-13 Dbd Srl Single-blade cooking knife
US5765288A (en) * 1996-07-22 1998-06-16 Hagler, Jr.; Luther C. Dual method wallcovering creaser and trimmer apparatus
US20050150115A1 (en) * 2002-05-15 2005-07-14 Hanna Robert J. Knife with partially exposed blade when closed
US6857192B1 (en) 2003-08-26 2005-02-22 Guy Summers Dual blade utility knife
US20050044726A1 (en) * 2003-08-26 2005-03-03 Guy Summers Dual blade utility knife
US20080016702A1 (en) * 2004-04-22 2008-01-24 Domenico Anthony J Lamina cutter with disposable guard
US7533595B2 (en) 2004-04-22 2009-05-19 Square One Parachutes, Inc. Lamina cutter
US20050235500A1 (en) * 2004-04-22 2005-10-27 Domenico Anthony J Lamina cutter
US7367876B1 (en) * 2006-11-13 2008-05-06 Denoff Dennis R Shellfish tool
US20080113597A1 (en) * 2006-11-13 2008-05-15 Denoff Dennis R Shellfish tool
US20080141481A1 (en) * 2006-12-01 2008-06-19 A. Richard S.E.N.C. Screw bit putty knife
US8856995B2 (en) 2006-12-01 2014-10-14 A. Richard Tools Co./Outils A. Richard Co. Screw bit putty knife
US8112867B2 (en) 2008-01-16 2012-02-14 Domenico Anthony J Box opener
US20090178268A1 (en) * 2008-01-16 2009-07-16 Domenico Anthony J Box opener
US20110106123A1 (en) * 2008-02-05 2011-05-05 Lafauci Michael Two-part surgical device
USD615713S1 (en) * 2008-07-16 2010-05-11 James Archetti Pocket-sized retractable leash
US9107695B2 (en) 2012-03-19 2015-08-18 Brolex Llc Surgical instruments and methods of use
US20140173914A1 (en) * 2012-12-21 2014-06-26 Hsiu-Man Yu Chen Cutter
USD833240S1 (en) * 2017-07-17 2018-11-13 Avraham Goldstein Combined knife and bottle opener

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