US3857176A - Knife with a retractable blade - Google Patents

Knife with a retractable blade Download PDF

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Publication number
US3857176A
US3857176A US00423084A US42308473A US3857176A US 3857176 A US3857176 A US 3857176A US 00423084 A US00423084 A US 00423084A US 42308473 A US42308473 A US 42308473A US 3857176 A US3857176 A US 3857176A
Authority
US
United States
Prior art keywords
blade
shell
carriage
side plate
handle
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
US00423084A
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English (en)
Inventor
M Quenot
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.)
Stanley Mabo SA
Original Assignee
Stanley Mabo SA
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 Stanley Mabo SA filed Critical Stanley Mabo SA
Application granted granted Critical
Publication of US3857176A publication Critical patent/US3857176A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • a knife with a retractable blade comprises a shell and [52] US. Cl. 30/162, 30/335 a rigid Side plate between which a blade carried by a [51 Int. Cl B261) 1/08 blade carriage is held in a chosen position by means of [58] Fleld of Search 30/162, a screw with an enlarged head against the side plate, a 30/163 shank passing through registering slots in the plate and shell, and a nut slidably held in a channel in the shell.
  • the various knives of this type on the market are generally formed by a handle in two halves, assembled together longitudinally.
  • the blade fitted in a carriage slidably mounted inside the two halves of the handle, is interchangeable and may be locked in two or three protruding positions by means of notches provided in the blade.
  • a lateral play of the blade which adversely affects the precision of cutting, occurs due to the construction of the knife in two halves in a manner to provide an easy forward-rearward sliding of the carriage.
  • Some knives also comprise a spare blade magazine in the rear part of their handle.
  • the fitting in and, above all, the opening out of this magazine are generally controlled by a rudimentary button device liable to produce an untimely opening out as a result of an unintentional pressure of the hand on the said button during cutting.
  • An object of the invention is to provide a construction of a knife handle which eliminates the mentioned drawbacks, is convenient to use, and well adapted to the sought-after use.
  • a knife handle comprises a hollow elongate shell, a rigid elongate side plate, a bladecarrying carriage movably mounted between the shell and side plate, and means for gripping the carriage between the shell and side plate in selected positions along the handle.
  • the carriage gripping means include: means definining registering elongate slots along the side plate and the shell, the slot in the shell communicating with an enlarged elongate rail-forming channel towards the outer face of the shell; a screw having an enlarged head bearing against the side plate and a shank passing through said slots into said channel; a nut threadably engaged on said shank, the nut being held in said channel for sliding movement therealong but against rotation relative to the shell; and means defining an aperture in the carriage for receiving said screw.
  • the enlarged head is manually rotatable between a first position in which it can be moved bodily with the screw, nut and carriage by sliding of said shank along said slots, and a second position in which it is fixed with the carriage firmly gripped between the shell and plate in any given position of said shank along said slots.
  • This construction offers the advantage that during use the blade carriage and a blade carried thereby are firmly held in a blade outlet slot defined between the shell and the side plate; this slot cannot be permanently enlarged as a result of use, since its opposing faces are held as close as possible together by suitably turning the enlarged head of the screw.
  • the length of the blade tip protruding from this slot can be altered progressively and therefore set at an exact value according to the material to be cut. Furthermore, it is possible to ensure easy replacement of a blade, by simply turning the head to loosen the plate from the shell, without fully dismantling the plate from the shell.
  • FIG. 1 is an elevational view of one side of a knife
  • FIG. 2 is a cross-section taken along line llll of FIG. 1;
  • FIG. 3 is an elevational view of the other side of the knife.
  • FIG. 4 is an enlarged scale elevational view similar to FIG. 1 but with a side plate of the knife handle removed.
  • the knife shown comprises a hollow elongate shell 1 with a retractable blade 2 whose position is controlled by means of an enlarged knurled head 3 of a screw whose shank 6 is slidably mounted along an elongate slot 4 in a rigid stainless steel side plate 5 and a registering elongate slot 4' in shell 1.
  • the shank 6 passes through a hole 12 in a blade-supporting carriage 7 and its threaded free end is screwed into a nut 8 which can slide, but not rotate, in a channel 9 opening into the outer face of shell 1, this channel communicating with slot 4' and being provided with a rigid metallic support plate 23.
  • the carriage 7 (FIG. 4) is formed by a metalplate with its upper and lower edges bent over perpendicularly to form rails slidably engaged in cooperating channels (not shown) in shell 1.
  • the upper edge (looking at FIG. 4) also has two bent over catches 14.
  • a resilient tongue 13 is cutout in the central part of carriage 7 and is curved to normally slightly protrude out of the plane of the plate towards the same side as the upper and lower edges and catches 14.
  • a trapezoidal blade 2 having two rounded notches 15 in its shorter, non-sharpened parallel edge is fitted in carriage 7 by engagement of one of its notches 15 in the forwardmost catch 14, and with its rear edge resting against the rearmost catch 14.
  • This blade 2 can be inserted into carriage 7 through an inclined slot 10 formed between the tapered nose end 11 of shell 1 and plate 5 when the screw head 3 is loosened sufficiently.
  • spring 13 is'deformed by blade 2 until the position shown in FIG. 2 is reached, in which the blade 2 (and carriage 7) are tightly held in slot 10 between nose 11 and plate 5, and the shank 6 is so tightly screwed in nut 8 as to prevent movement of the shank 6 along slots 4 and 4'.
  • the protruding blade 2 can be used with the inclined face of slot 10 acting as a bearing surface.
  • the tight gripping provided by screw head 3 avoids any unwanted defor- .mation of slot 10 or shaking of blade 2.
  • the shank 6 When the screw head 3 is slightly loosened, the shank 6 can be slid along slots 4 and'4' to another position, and the blade 2 and carriage 7 set in this new position by tightening screw head 3. However, by further loosening screw head 3, the tongue 13 can push blade 2 away from the body of carriage 7 until notch 15 is disengaged from catch 14. The blade 2 can then be removed and replaced, or turned around and reinserted with its other notch 15 engaging with catch 14, without a need to fully dismantle plate from shell 1.
  • a spare blade support or magazine 16 is slidably mounted in a recess in the rear end of the handle.
  • a resilient catch 17 moulded integrally with magazine 16 in a synthetic plastic material comes either to engage on an inner boss 18 in shell 1 to releasably hold magazine 16 wholly within the handle, or against a rearwardly disposed protuberance, disposed above a through-hole 22, to prevent full withdrawal of magazine 16.
  • Magazine 16 includes semi-circular recesses 19 in the upper edges of its walls to facilitate removal of blades in the withdrawn position of the magazine. Withdrawal of magazine 16 by a pulling action is facilitated by the provision of a nail-engaging recess 21 in shell 1. Withdrawal of the magazine 16 can in no event be provoked by an unwanted movement during cutting.
  • Hole 22 serves for the passage of a cord or the like for suspending the knife.
  • screw head 3 is shown as having a diameter equal to the width of the handle in a direction generally parallel to the plane of head 3, it could have a greater diameter. Also, head 3, instead of being formed by a separate part of synthetic plastic material moulded about a hexagonal head of the screw, could be integral with the screw.
  • the slot 4' instead of being formed in the shell 1, could be formed solely in a squared substantially C- section metal support fixed in an opening in the shell, the outer face of this support closing the opening while its open inner face forms the slot 4.
  • a knife handle comprising a hollow elongate shell, a rigid elongate side plate, a blade-carrying carriage movably mounted between the shell and side plate, and means for gripping the carriage between the shell and side plate in selected positions along the handle, said carriage gripping means including: means defining registering elongate slots along the side plate and the shell, the slot in the shell communicating with an enlarged elongate rail-forming channel towards the outer face of the shell, a screw having an enlarged head bearing against the side plate and a shank passing through said slots into said channel, a nut threadably engaged on said shank, the nut being held in said channel for sliding movement therealong but against rotation relative to the shell, and means defining an aperture in the carriage for receiving said screw, said enlarged head being manually rotatable between a first position in which it can be moved bodily with the screw, nut and carriage by sliding of said shank along said slots, and a second position in which it is fixed with the carriage firmly gripped between the shell and plate in
  • a knife handle according to claim 1 in which said enlarged head is circular and knurled and has a diameter at least as great as the width of the handle in a direction generally parallel to the plane of said head.
  • a knife handle in which said blade engaging means includes a projection for engaging with a blade, and said blade releasing means includes an integral curved resilient tongue adapted to be deformed by a blade engaging with said projection when the enlarged head is in said second position and to move the blade out of engagement with said projection as the enlarged head is rotated towards or beyond said first position.
  • a knife handle comprising a spare blade support slidably mounted in said shell along the longitudinal direction of the handle, said support including an integral resilient catch cooperating with means on the shell for selectively locking the support in a first position wholly within the handle and in a second position withdrawn from the handle.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Knives (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
US00423084A 1972-12-11 1973-12-10 Knife with a retractable blade Expired - Lifetime US3857176A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7244004A FR2210129A5 (ja) 1972-12-11 1972-12-11

Publications (1)

Publication Number Publication Date
US3857176A true US3857176A (en) 1974-12-31

Family

ID=9108489

Family Applications (1)

Application Number Title Priority Date Filing Date
US00423084A Expired - Lifetime US3857176A (en) 1972-12-11 1973-12-10 Knife with a retractable blade

Country Status (4)

Country Link
US (1) US3857176A (ja)
DE (2) DE7343597U (ja)
ES (1) ES198646Y (ja)
FR (1) FR2210129A5 (ja)

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4089112A (en) * 1976-09-30 1978-05-16 Pacific Handy Cutter, Inc. Adjustable blade knife
US4621425A (en) * 1984-10-05 1986-11-11 Stanley Works Retractable knife handle
US4630373A (en) * 1985-04-29 1986-12-23 Staurseth Robert A Retractable utility saw
US5121544A (en) * 1990-06-18 1992-06-16 The Stanley Works Limited Replaceable blade knife
US5386632A (en) * 1993-01-12 1995-02-07 Pacific Handy Cutter, Inc. Ergonomic utility knife/box cutter and method of making
US5511261A (en) * 1994-09-21 1996-04-30 Collins; Walter W. Utility tool
US5864952A (en) * 1997-01-02 1999-02-02 Lutz File & Tool Company Knife for woodworking
GB2336797A (en) * 1998-04-27 1999-11-03 Stanley Works Blade carrier for a utility knife
US6000590A (en) * 1998-04-09 1999-12-14 Allen; Mary Kay Blade holster assembly
USD430466S (en) * 1999-10-11 2000-09-05 Schmidt G Gerry Utility knife blade guard
US6314646B1 (en) 1999-12-15 2001-11-13 Pacific Handy Cutter, Inc. Utility knife
US6364182B1 (en) 1998-04-09 2002-04-02 Mary Kay Hansen Holster assembly with disposable blade well
US20020118853A1 (en) * 2000-10-23 2002-08-29 Gunnar Flentje Loudspeaker enclosure with adjustable baffle board
US20050072042A1 (en) * 2003-10-06 2005-04-07 Terrell Steven J. Apparatus for trimming and chemically treating trees
US20060277761A1 (en) * 2005-06-13 2006-12-14 Hagan John T Saw tool
US20100037466A1 (en) * 2008-08-15 2010-02-18 The Stanley Works Utility knife with blade lock
US20100180450A1 (en) * 2009-01-16 2010-07-22 Van Deursen Gary E Retractable blade carpet knife
US20100325898A1 (en) * 2009-06-20 2010-12-30 Hyde Tools, Inc. Retractable blade scraper having a blade-storage drawer and a blade slide with upper and lower blade-clamping members
US20120011728A1 (en) * 2010-07-19 2012-01-19 Stanley Black & Decker, Inc. Utility knife and fastener thereof
US20120279071A1 (en) * 2009-02-26 2012-11-08 Joe Garavaglia Utility Knife
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
USD699541S1 (en) 2013-01-18 2014-02-18 Milwaukee Electric Tool Corporation Utility knife
USD699540S1 (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
US20160089798A1 (en) * 2014-09-25 2016-03-31 Sdi Corporation Cutter Assembly Having a Screw-Locking Device
US9301458B2 (en) 2011-05-05 2016-04-05 Steven J. Terrell Apparatus for general tree trimming or precision tree trimming having an aerial tank
US9840013B2 (en) 2008-04-29 2017-12-12 Pacific Handy Cutter, Inc. Safety cutter with blade change/storage mechanism
US10492373B2 (en) 2011-05-05 2019-12-03 Steven J Terrell Apparatus for aerial tool configurations
US10492372B2 (en) 2011-05-05 2019-12-03 Steven J Terrell Apparatus for aerial tool configurations
US10798877B2 (en) 2011-05-05 2020-10-13 Steven J Terrell Apparatus for aerial tool configurations
US11330766B2 (en) 2011-05-05 2022-05-17 Steven J Terrell Apparatus for aerial tool configurations
US11382279B2 (en) 2011-05-05 2022-07-12 Steven J Terrell Apparatus for aerial tool configurations
US11498199B2 (en) 2018-07-09 2022-11-15 Milwaukee Electric Tool Corporation Utility knife with tape hook recess
US11690324B2 (en) 2011-05-05 2023-07-04 Steven J Terrell Apparatus for aerial tool configurations
USD1034840S1 (en) * 2023-10-07 2024-07-09 Zhiqing Zhang Fidget toy knife

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3325552A1 (de) * 1983-07-15 1985-01-31 Martor-Argentax E.H. Beermann Kg, 5650 Solingen Handwerkermesser
FR2697194B1 (fr) * 1992-10-27 1994-12-16 Maped Couteau à lame rétractable et sécable.
FR2985413A1 (fr) * 2007-01-23 2013-07-12 Mure & Peyrot Lame d'outil de scarification de pate, notamment de pate a pain.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US237093A (en) * 1881-02-01 crowell
US1417872A (en) * 1921-08-11 1922-05-30 David M Wall Blade pendant
US2404141A (en) * 1943-12-11 1946-07-16 Nelson Jennings Razor blade holder
US3577637A (en) * 1968-09-24 1971-05-04 Philip Morris Inc Retractable blade knife
US3660895A (en) * 1971-01-11 1972-05-09 Stanley Works New Britain The Retractable utility knife
US3708881A (en) * 1971-03-22 1973-01-09 R Bennett Multi position adjustable roofing knife

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US237093A (en) * 1881-02-01 crowell
US1417872A (en) * 1921-08-11 1922-05-30 David M Wall Blade pendant
US2404141A (en) * 1943-12-11 1946-07-16 Nelson Jennings Razor blade holder
US3577637A (en) * 1968-09-24 1971-05-04 Philip Morris Inc Retractable blade knife
US3660895A (en) * 1971-01-11 1972-05-09 Stanley Works New Britain The Retractable utility knife
US3708881A (en) * 1971-03-22 1973-01-09 R Bennett Multi position adjustable roofing knife

Cited By (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4089112A (en) * 1976-09-30 1978-05-16 Pacific Handy Cutter, Inc. Adjustable blade knife
US4621425A (en) * 1984-10-05 1986-11-11 Stanley Works Retractable knife handle
US4630373A (en) * 1985-04-29 1986-12-23 Staurseth Robert A Retractable utility saw
US5121544A (en) * 1990-06-18 1992-06-16 The Stanley Works Limited Replaceable blade knife
US5613300A (en) * 1993-01-12 1997-03-25 Pacific Handy Cutter Ergonomic utility knife/box cutter and method of making
US5386632A (en) * 1993-01-12 1995-02-07 Pacific Handy Cutter, Inc. Ergonomic utility knife/box cutter and method of making
US5511261A (en) * 1994-09-21 1996-04-30 Collins; Walter W. Utility tool
US5864952A (en) * 1997-01-02 1999-02-02 Lutz File & Tool Company Knife for woodworking
US6364182B1 (en) 1998-04-09 2002-04-02 Mary Kay Hansen Holster assembly with disposable blade well
US6000590A (en) * 1998-04-09 1999-12-14 Allen; Mary Kay Blade holster assembly
US6105838A (en) * 1998-04-09 2000-08-22 Hansen; Mary Kay Holster and blade well
GB2336797A (en) * 1998-04-27 1999-11-03 Stanley Works Blade carrier for a utility knife
GB2336797B (en) * 1998-04-27 2002-01-16 Stanley Works Knife handle
USD430466S (en) * 1999-10-11 2000-09-05 Schmidt G Gerry Utility knife blade guard
US6314646B1 (en) 1999-12-15 2001-11-13 Pacific Handy Cutter, Inc. Utility knife
US20020118853A1 (en) * 2000-10-23 2002-08-29 Gunnar Flentje Loudspeaker enclosure with adjustable baffle board
US20050072042A1 (en) * 2003-10-06 2005-04-07 Terrell Steven J. Apparatus for trimming and chemically treating trees
US20060277761A1 (en) * 2005-06-13 2006-12-14 Hagan John T Saw tool
US7516550B2 (en) 2005-06-13 2009-04-14 Textron Innovations Inc. Saw tool
US9840013B2 (en) 2008-04-29 2017-12-12 Pacific Handy Cutter, Inc. Safety cutter with blade change/storage mechanism
US20100037466A1 (en) * 2008-08-15 2010-02-18 The Stanley Works Utility knife with blade lock
US8793881B2 (en) 2008-08-15 2014-08-05 Stanley Black & Decker, Inc. Utility knife with blade lock
US20100180450A1 (en) * 2009-01-16 2010-07-22 Van Deursen Gary E Retractable blade carpet knife
WO2010083426A1 (en) * 2009-01-16 2010-07-22 American Safety Razor Company Retractable blade carpet knife
US8904649B2 (en) * 2009-02-26 2014-12-09 Pacific Handy Cutter, Inc. Utility knife
US20120279071A1 (en) * 2009-02-26 2012-11-08 Joe Garavaglia Utility Knife
CN102596518A (zh) * 2009-06-20 2012-07-18 海德工具公司 具有刀片存储抽屉和带有上部和下部刀片夹持构件的刀片滑块的可伸缩刀片刮板
US8291598B2 (en) * 2009-06-20 2012-10-23 Hyde Tools, Inc. Retractable blade scraper having a blade-storage drawer and a blade slide with upper and lower blade-clamping members
US20100325898A1 (en) * 2009-06-20 2010-12-30 Hyde Tools, Inc. Retractable blade scraper having a blade-storage drawer and a blade slide with upper and lower blade-clamping members
CN102596518B (zh) * 2009-06-20 2015-07-08 海德工具公司 具有刀片存储抽屉和带有上部和下部刀片夹持构件的刀片滑块的可伸缩刀片刮板
US20120011728A1 (en) * 2010-07-19 2012-01-19 Stanley Black & Decker, Inc. Utility knife and fastener thereof
US8413339B2 (en) * 2011-02-03 2013-04-09 Stanley Black & Decker, Inc. Quick change snap off knife
US9307704B2 (en) 2011-05-05 2016-04-12 Steven J. Terrell Apparatus for general tree trimming or precision tree trimming
US10798877B2 (en) 2011-05-05 2020-10-13 Steven J Terrell Apparatus for aerial tool configurations
US11690324B2 (en) 2011-05-05 2023-07-04 Steven J Terrell Apparatus for aerial tool configurations
US11382279B2 (en) 2011-05-05 2022-07-12 Steven J Terrell Apparatus for aerial tool configurations
US9301458B2 (en) 2011-05-05 2016-04-05 Steven J. Terrell Apparatus for general tree trimming or precision tree trimming having an aerial tank
US11330766B2 (en) 2011-05-05 2022-05-17 Steven J Terrell Apparatus for aerial tool configurations
US10492372B2 (en) 2011-05-05 2019-12-03 Steven J Terrell Apparatus for aerial tool configurations
US10492373B2 (en) 2011-05-05 2019-12-03 Steven J Terrell Apparatus for aerial tool configurations
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
USD699541S1 (en) 2013-01-18 2014-02-18 Milwaukee Electric Tool Corporation Utility knife
USD699540S1 (en) 2013-01-18 2014-02-18 Milwaukee Electric Tool Corporation Utility knife
US9623572B2 (en) * 2014-09-25 2017-04-18 Sdi Corporation Cutter assembly having a screw-locking device
US20160089798A1 (en) * 2014-09-25 2016-03-31 Sdi Corporation Cutter Assembly Having a Screw-Locking Device
US11498199B2 (en) 2018-07-09 2022-11-15 Milwaukee Electric Tool Corporation Utility knife with tape hook recess
USD1034840S1 (en) * 2023-10-07 2024-07-09 Zhiqing Zhang Fidget toy knife

Also Published As

Publication number Publication date
FR2210129A5 (ja) 1974-07-05
ES198646Y (es) 1975-12-01
DE2361148A1 (de) 1974-06-12
ES198646U (es) 1975-06-16
DE7343597U (de) 1976-01-22

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