US3765089A - Knife with adjustable blade - Google Patents

Knife with adjustable blade Download PDF

Info

Publication number
US3765089A
US3765089A US00153760A US3765089DA US3765089A US 3765089 A US3765089 A US 3765089A US 00153760 A US00153760 A US 00153760A US 3765089D A US3765089D A US 3765089DA US 3765089 A US3765089 A US 3765089A
Authority
US
United States
Prior art keywords
handle
blade
sheath
groove
knife
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00153760A
Inventor
Y Ibata
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Tenshashi KK
Original Assignee
Nippon Tenshashi KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Tenshashi KK filed Critical Nippon Tenshashi KK
Application granted granted Critical
Publication of US3765089A publication Critical patent/US3765089A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B5/00—Hand knives with one or more detachable blades
    • B26B5/001—Hand knives with one or more detachable blades with blades being slid out of handle immediately prior to use
    • B26B5/002—Hand knives with one or more detachable blades with blades being slid out of handle immediately prior to use segmented blades

Definitions

  • An object of my invention is to provide a knife with adjustable blade in which the edge of the handle is straight and can be used as a ruler to draw a straight line. Also the shaped handle enables the blade to advance in a straight line.
  • Another object of my invention is to provide a knife of the character stated in which the blade is secured to the handle at its rearmost end, and the front part of the blade is held against sidewise movement at the forward end of the handle by means of a set screw. This prevents sidewise movement of the blade when in use and, consequently, the use of the knife is more efficient.
  • FIG. 1 is a perspective view of my knife with parts broken away to show interior construction.
  • FIG. 2 is a side elevation of my knife.
  • FIG. 3 is a top plan view of the same.
  • FIG. 4 is a side elevation of my knife as viewed from the side opposite that shown in FIG. 2.
  • FIG. 5 is an end view of the handle of the knife.
  • FIG. 6 is a side elevation of the handle with the cover plate removed.
  • FIG. 7 is a top plan view of the portion of the handle shown in FIG. 6.
  • FIG. 8 is a side elevation of the handle cover plate.
  • FIG. 9 is a sectional view taken on line 99 of FIG. 8.
  • FIG. 10 is a sectional view taken on line 10-10 of FIG. 2.
  • FIG. 11 is a sectional view taken on line 11-11 of FIG. 3.
  • FIG. 12 is a sectional view taken on line 1212 of FIG. 2.
  • FIG. 13 is a sectional view taken on line 1313 of FIG. 3.
  • FIG. 14 is a perspective view of the advancing puch button.
  • the numeral 1 indicates an elongated handle which is formed with an elongated groove 2 in the side thereof.
  • a slot 3 is formed in the handle 1 and this slot opens into the groove 2 to permit lengthwise sliding by theejector 4, as will be subsequently described.
  • a protective sheath 5 is fitted in the groove 2 to protect the blade 6 against damage by rubbing over the metal surface of the handle.
  • the blade 6 is a thin sheet of metal formed as an elongated strip and divided into cutter segments by means of transverse score cuts 7. The score cuts 7 permits the user to break off the outermost portion of the blade strip 6 after it has been dulled by use.
  • the ejector or rider 4 is slidably mounted in the groove 2 and can be moved back and forth manually by the user.
  • the ejector includes a horizontally extending finger 8 which has a pin 9 extending from the forward end thereof.
  • the pin 9 extends into an appropriate hole 10 in the blade 6, thus permitting the blade to be advanced or retracted manually by the user.
  • a spring finger 11 is formed on the ejector 4 to yieldably hold the ejector in position and to prevent accidental retraction of the blade 6.
  • a set screw 12 is positioned at the forward end of the handle 1, and this set screw threads through a sleeve 13 and bears against the blade 6. Thus the blade can be held in its adjusted position.
  • the set screw 12 being positioned at the forward end of the handle 1 also will press against the side of the blade 6 and will push that blade against the sheath 5 to prevent sideways movement or wobble of the cutting blade.
  • the cover plate 5 At its rear end the cover plate 5 is secured to the handle 1 by means of the rivet 14, and at the forward end the cover plate is secured to the handle by means of the set screw 12 as previously described.
  • the cover plate 5 is securely held at both ends and its upper edge 15 is straight and can be used as a ruler.
  • the cover 15 At the forward end the cover 15 is provided with a short upper flange 16 and a short lower flange 17, which flanges engage the handle 1 to hold the parts in position.
  • a knife with adjustable blade consisting of a handle, said handle having a groove therein extending the length thereof, and a blade slidably mounted in said groove, said handle having a slot therein extending into said groove, an ejector slidably mounted in said slot and projecting into said groove, a stud on the ejector fitting into the blade to slide the blade longitudinally in the handle, and a spring finger on the ejector pressing the ejector upwardly to raise the blade in the groove, a sheath positioned on one side of the handle and enclosing said groove, a rivet securing one end of the sheath to the handle, and a flange securing the other end of the sheath to the handle.
  • a knife with adjustable blade as recited in claim 1 a sheath positioned on one side of the handle and enclosing said groove, a rivet securing one end of the sheath to the handle, a flange securing the other end of the sheath to the handle, and said rivet and set screw being positioned at opposite ends of the sheath to hold the sheath pressed against the handle and the blade.
  • a knife with adjustable blade as recited in claim 1 a sheath positioned on one side of the handle and enclosing said groove, a rivet securing one end of the sheath to the handle, a flange securing the other end of the sheath to the handle, the upper edge of said sheath being flat and straight to form a ruler.

Abstract

This knife with adjustable blade consists of a handle in which an elongated strip blade is slidably mounted and can be ejected from one end of the handle by means of a manually slidable ejector which is releasably attached to one end of the blade strip. The blade strip is scored at an angle at spaced intervals so that the used or dull end of the blade strip can be broken off and discarded when no longer useful. The blade is also held in extended position by means of a set screw.

Description

United States Patent Ibata Oct. 16, 1973 Bf KNIFE WITH ADJUSTABLE BLADE -3 FOREIGN PATENTS OR APPLICATIONS lhvehtori (9 9 !PEE; QSKQ J?PQ 1,936,196 2/1970 Germany 30/162 [73] Assignee: Nippon Tenshashi Kabushiki Kaisha, Osaka,Japan Primary Examiner--Othell M. Simpson 1 [22 l d June 1 1971 Attorneyl-Iarold A. Dreckman 21 A 1. No.: 153 760 1 pp [57 ABSTRACT [52] C| 30/320, 30/333 30/162 This knife with adjustable blade consists of a handle in 511 Int. Cl B26b 1/08, B26b 5/00 which an elongated StriP blade is shdahly mounted and 58 Field of Search 30/162,320, 332, can be ejected fmm and 0f the handle by means 30/333 335 336 337 339 of a manually slidable ejector which is releasably attached to one end of the blade strip. The blade strip is [56] References cu scored at an angle at spaced intervals so that the used UNITED STATES PATENTS or dull end of the blade strip can be broken off and r I discarded when no longer useful. The blade is also fisgilt held in extended position by means of a set screw. 3,192,624 7/1965 Gringer 30/162 3 Claims, Drawing Figures 1,960,130 5/1934 Trubel 30/320 2,051,199 8/1936 Christianson 30/320 Patented Oct. 16, 1973 3,765,089
2 Sheets-Sheet l KNIFE WITH ADJUSTABLE BLADE An object of my invention is to provide a knife with adjustable blade in which the edge of the handle is straight and can be used as a ruler to draw a straight line. Also the shaped handle enables the blade to advance in a straight line.
Another object of my invention is to provide a knife of the character stated in which the blade is secured to the handle at its rearmost end, and the front part of the blade is held against sidewise movement at the forward end of the handle by means of a set screw. This prevents sidewise movement of the blade when in use and, consequently, the use of the knife is more efficient.
Other objects, advantages and features of invention may appear from the accompanying drawings, the subjoined detailed description and the appended claims.
In the drawings:
FIG. 1 is a perspective view of my knife with parts broken away to show interior construction.
FIG. 2 is a side elevation of my knife.
FIG. 3 is a top plan view of the same.
FIG. 4 is a side elevation of my knife as viewed from the side opposite that shown in FIG. 2.
FIG. 5 is an end view of the handle of the knife.
FIG. 6 is a side elevation of the handle with the cover plate removed. a
FIG. 7 is a top plan view of the portion of the handle shown in FIG. 6.
FIG. 8 is a side elevation of the handle cover plate.
FIG. 9 is a sectional view taken on line 99 of FIG. 8.
FIG. 10 is a sectional view taken on line 10-10 of FIG. 2.
FIG. 11 is a sectional view taken on line 11-11 of FIG. 3.
FIG. 12 is a sectional view taken on line 1212 of FIG. 2.
FIG. 13 is a sectional view taken on line 1313 of FIG. 3.
FIG. 14 is a perspective view of the advancing puch button.
Referring more particularly to the drawing, the numeral 1 indicates an elongated handle which is formed with an elongated groove 2 in the side thereof. A slot 3 is formed in the handle 1 and this slot opens into the groove 2 to permit lengthwise sliding by theejector 4, as will be subsequently described. A protective sheath 5 is fitted in the groove 2 to protect the blade 6 against damage by rubbing over the metal surface of the handle. The blade 6 is a thin sheet of metal formed as an elongated strip and divided into cutter segments by means of transverse score cuts 7. The score cuts 7 permits the user to break off the outermost portion of the blade strip 6 after it has been dulled by use.
The ejector or rider 4 is slidably mounted in the groove 2 and can be moved back and forth manually by the user. The ejector includes a horizontally extending finger 8 which has a pin 9 extending from the forward end thereof. The pin 9 extends into an appropriate hole 10 in the blade 6, thus permitting the blade to be advanced or retracted manually by the user. A spring finger 11 is formed on the ejector 4 to yieldably hold the ejector in position and to prevent accidental retraction of the blade 6.
A set screw 12 is positioned at the forward end of the handle 1, and this set screw threads through a sleeve 13 and bears against the blade 6. Thus the blade can be held in its adjusted position. The set screw 12 being positioned at the forward end of the handle 1 also will press against the side of the blade 6 and will push that blade against the sheath 5 to prevent sideways movement or wobble of the cutting blade.
At its rear end the cover plate 5 is secured to the handle 1 by means of the rivet 14, and at the forward end the cover plate is secured to the handle by means of the set screw 12 as previously described. Thus the cover plate 5 is securely held at both ends and its upper edge 15 is straight and can be used as a ruler. At the forward end the cover 15 is provided with a short upper flange 16 and a short lower flange 17, which flanges engage the handle 1 to hold the parts in position.
Having described my invention, I claim:
1. A knife with adjustable blade consisting of a handle, said handle having a groove therein extending the length thereof, and a blade slidably mounted in said groove, said handle having a slot therein extending into said groove, an ejector slidably mounted in said slot and projecting into said groove, a stud on the ejector fitting into the blade to slide the blade longitudinally in the handle, and a spring finger on the ejector pressing the ejector upwardly to raise the blade in the groove, a sheath positioned on one side of the handle and enclosing said groove, a rivet securing one end of the sheath to the handle, and a flange securing the other end of the sheath to the handle.
2. A knife with adjustable blade as recited in claim 1, a sheath positioned on one side of the handle and enclosing said groove, a rivet securing one end of the sheath to the handle, a flange securing the other end of the sheath to the handle, and said rivet and set screw being positioned at opposite ends of the sheath to hold the sheath pressed against the handle and the blade.
3. A knife with adjustable blade as recited in claim 1, a sheath positioned on one side of the handle and enclosing said groove, a rivet securing one end of the sheath to the handle, a flange securing the other end of the sheath to the handle, the upper edge of said sheath being flat and straight to form a ruler.

Claims (3)

1. A knife with adjustable blade consisting of a handle, said handle having a groove therein extending the length thereof, and a blade slidably mounted in said groove, said handle having a slot therein extending into said groove, an ejector slidably mounted in said slot and projecting into said groove, a stud on the ejector fitting into the blade to slide the blade longitudinally in the handle, and a spring finger on the ejector pressing the ejector upwardly to raise the blade in the groove, a sheath positioned on one side of the handle and enclosing said groove, a rivet securing one end of the sheath to the handle, and a flange securing the other end of the sheath to the handle.
2. A knife with adjustable blade as recited in claim 1, a sheath positioned on one side of the handle and enclosing said groove, a rivet securing one end of the sheath to the handle, a flange securing the other end of the sheath to the handle, and said rivet and set screw being positioned at opposite ends of the sheath to hold the sheath pressed against the handle and the blade.
3. A knife with adjustable blade as recited in claim 1, a sheath positioned on one side of the handle and enclosing said groove, a rivet securing one end of the sheath to the handle, a flange securing the other end of the sheath to the handle, the upper edge of said sheath being flat and straight to form a ruler.
US00153760A 1971-06-16 1971-06-16 Knife with adjustable blade Expired - Lifetime US3765089A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15376071A 1971-06-16 1971-06-16

Publications (1)

Publication Number Publication Date
US3765089A true US3765089A (en) 1973-10-16

Family

ID=22548629

Family Applications (1)

Application Number Title Priority Date Filing Date
US00153760A Expired - Lifetime US3765089A (en) 1971-06-16 1971-06-16 Knife with adjustable blade

Country Status (1)

Country Link
US (1) US3765089A (en)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3855700A (en) * 1974-04-19 1974-12-24 Gerson Co Inc L Blade scraper
US3872591A (en) * 1972-11-27 1975-03-25 Michel Quenot Knife handle
US3889368A (en) * 1973-07-06 1975-06-17 Conde Kk Knife for cutting in sliding contact with ruler edge
US3905101A (en) * 1974-04-19 1975-09-16 Becton Dickinson Co Disposable surgical scalpel
US4103421A (en) * 1976-04-30 1978-08-01 Stanley-Mabo S.A. Blade-holding cutting device
US4170062A (en) * 1978-07-06 1979-10-09 Kai Cutlery Center Co., Ltd. Extensible knife with blade position adjustment
US4209900A (en) * 1978-01-25 1980-07-01 Stanley Tools Limited Retractable blade knife
US4232445A (en) * 1978-03-31 1980-11-11 Kai Cutlery Center Co., Ltd. Knife apparatus
USRE30733E (en) * 1980-03-05 1981-09-08 Stanley-Mabo S.A. Blade-holding cutting device
US4936014A (en) * 1989-04-06 1990-06-26 Johnson Level And Tool (Canada) Inc. Utility knife
EP0543781A1 (en) * 1991-11-21 1993-05-26 Stephan Szabo Knife
US5344424A (en) * 1993-03-12 1994-09-06 Roberts Philip L Selectively retractable, disposable surgical knife
US5870828A (en) * 1997-06-04 1999-02-16 Violex-Bic, S.A. Utility knife system
US6276588B1 (en) * 1999-04-20 2001-08-21 International Rectifier Corp. Insert-type cutting blade for ultrasonic bonding wire termination
US6324763B1 (en) * 2000-04-07 2001-12-04 Tai-Wang Lee Structure art design knife
US20060052819A1 (en) * 2004-09-07 2006-03-09 Yen-Yue Lin Surgery fixation forceps
US20080189956A1 (en) * 2005-10-13 2008-08-14 Gudula Polei Knife
US20100088901A1 (en) * 2008-07-25 2010-04-15 University Of Delaware Snap-off blade knife with safety stop
US8413339B2 (en) * 2011-02-03 2013-04-09 Stanley Black & Decker, Inc. Quick change snap off knife
USD699092S1 (en) 2013-01-18 2014-02-11 Milwaukee Electric Tool Corporation Utility knife
USD699540S1 (en) 2013-01-18 2014-02-18 Milwaukee Electric Tool Corporation Utility knife
USD699541S1 (en) 2013-01-18 2014-02-18 Milwaukee Electric Tool Corporation Utility knife
USD701695S1 (en) 2012-10-01 2014-04-01 Milwaukee Electric Tool Corporation Utility knife blade case
CN108422788A (en) * 2018-01-25 2018-08-21 宁波市鄞州永佳电机工具有限公司 Graver
EP3674042A4 (en) * 2018-09-06 2021-05-26 Ningbo Hongdi Measuring Tape Industry Co., Ltd Utility knife having lock nut

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1960130A (en) * 1932-10-06 1934-05-22 Trubel George Knife
US2051199A (en) * 1935-01-18 1936-08-18 George M Christianson Plaster cutter
US2105663A (en) * 1935-10-03 1938-01-18 Ernest L Laverty Blade haft
US2284168A (en) * 1939-05-03 1942-05-26 Kilgore Mfg Co Adjustable retractable tool
US3192624A (en) * 1963-10-30 1965-07-06 Allway Mfg Co Inc Knife handle with adjustable blade
DE1936196A1 (en) * 1968-07-24 1970-02-19 Nippon Tenshashi Kk Cutting tool

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1960130A (en) * 1932-10-06 1934-05-22 Trubel George Knife
US2051199A (en) * 1935-01-18 1936-08-18 George M Christianson Plaster cutter
US2105663A (en) * 1935-10-03 1938-01-18 Ernest L Laverty Blade haft
US2284168A (en) * 1939-05-03 1942-05-26 Kilgore Mfg Co Adjustable retractable tool
US3192624A (en) * 1963-10-30 1965-07-06 Allway Mfg Co Inc Knife handle with adjustable blade
DE1936196A1 (en) * 1968-07-24 1970-02-19 Nippon Tenshashi Kk Cutting tool

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3872591A (en) * 1972-11-27 1975-03-25 Michel Quenot Knife handle
US3889368A (en) * 1973-07-06 1975-06-17 Conde Kk Knife for cutting in sliding contact with ruler edge
US3855700A (en) * 1974-04-19 1974-12-24 Gerson Co Inc L Blade scraper
US3905101A (en) * 1974-04-19 1975-09-16 Becton Dickinson Co Disposable surgical scalpel
US4103421A (en) * 1976-04-30 1978-08-01 Stanley-Mabo S.A. Blade-holding cutting device
US4209900A (en) * 1978-01-25 1980-07-01 Stanley Tools Limited Retractable blade knife
US4232445A (en) * 1978-03-31 1980-11-11 Kai Cutlery Center Co., Ltd. Knife apparatus
US4170062A (en) * 1978-07-06 1979-10-09 Kai Cutlery Center Co., Ltd. Extensible knife with blade position adjustment
USRE30733E (en) * 1980-03-05 1981-09-08 Stanley-Mabo S.A. Blade-holding cutting device
US4936014A (en) * 1989-04-06 1990-06-26 Johnson Level And Tool (Canada) Inc. Utility knife
EP0543781A1 (en) * 1991-11-21 1993-05-26 Stephan Szabo Knife
US5344424A (en) * 1993-03-12 1994-09-06 Roberts Philip L Selectively retractable, disposable surgical knife
US5870828A (en) * 1997-06-04 1999-02-16 Violex-Bic, S.A. Utility knife system
US6276588B1 (en) * 1999-04-20 2001-08-21 International Rectifier Corp. Insert-type cutting blade for ultrasonic bonding wire termination
US6324763B1 (en) * 2000-04-07 2001-12-04 Tai-Wang Lee Structure art design knife
US20060052819A1 (en) * 2004-09-07 2006-03-09 Yen-Yue Lin Surgery fixation forceps
US20080189956A1 (en) * 2005-10-13 2008-08-14 Gudula Polei Knife
US7784189B2 (en) * 2005-10-13 2010-08-31 Martor Kg Knife
US20100088901A1 (en) * 2008-07-25 2010-04-15 University Of Delaware Snap-off blade knife with safety stop
US8413339B2 (en) * 2011-02-03 2013-04-09 Stanley Black & Decker, Inc. Quick change snap off knife
USD701695S1 (en) 2012-10-01 2014-04-01 Milwaukee Electric Tool Corporation Utility knife blade case
USD699092S1 (en) 2013-01-18 2014-02-11 Milwaukee Electric Tool Corporation Utility knife
USD699540S1 (en) 2013-01-18 2014-02-18 Milwaukee Electric Tool Corporation Utility knife
USD699541S1 (en) 2013-01-18 2014-02-18 Milwaukee Electric Tool Corporation Utility knife
CN108422788A (en) * 2018-01-25 2018-08-21 宁波市鄞州永佳电机工具有限公司 Graver
US20190224862A1 (en) * 2018-01-25 2019-07-25 Ningbo Yinzhou Yongjia Electrical Tools Co., Ltd. Carving knife
EP3674042A4 (en) * 2018-09-06 2021-05-26 Ningbo Hongdi Measuring Tape Industry Co., Ltd Utility knife having lock nut

Similar Documents

Publication Publication Date Title
US3765089A (en) Knife with adjustable blade
US4393587A (en) Spring shielded safety knife
US5438757A (en) Multifunction cutting tool
US5012581A (en) Universal utility knife
US3448518A (en) Knife
US5398576A (en) Cutting device for a roll of protective film
US3879847A (en) Cutter with forwardly and rearwardly displaceable blade
US1706251A (en) Knife
US3824688A (en) Envelope opener
US2284168A (en) Adjustable retractable tool
US8695221B2 (en) Utility knife with extended travel carriage
SG54887G (en) Handle for tool with an e.g.retractable blade
US2691822A (en) Cable stripping tool
US3903774A (en) Cut-off attachment for a power hand saw
US3406447A (en) Carton cutter
US3500540A (en) Wallpaper knife and guide
US3157946A (en) Scraper and cutter
US2282729A (en) Cutting tool
US3097429A (en) Chisel with guide means
US4135299A (en) Ring cutting tool
US3587810A (en) Embossing tool adjustable for different width strips
GB2003781A (en) Knife holder
GB1304082A (en)
US2022876A (en) Razor blade knife
US4081903A (en) Cable stripper