US1603914A - Automatically-opening penknife - Google Patents

Automatically-opening penknife Download PDF

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Publication number
US1603914A
US1603914A US82639A US8263926A US1603914A US 1603914 A US1603914 A US 1603914A US 82639 A US82639 A US 82639A US 8263926 A US8263926 A US 8263926A US 1603914 A US1603914 A US 1603914A
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US
United States
Prior art keywords
blade
opening
end
knife
view
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Expired - Lifetime
Application number
US82639A
Inventor
Max P Hermann
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Max P Hermann
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Publication date
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Priority to US82639A priority Critical patent/US1603914A/en
Application granted granted Critical
Publication of US1603914A publication Critical patent/US1603914A/en
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Application status is Expired - Lifetime legal-status Critical

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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
    • 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
    • B26B1/048Hand knives with adjustable blade; Pocket knives with pivoted blade lockable in adjusted position with a locking member being slidable or movable along the handle
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00Joints and connections
    • Y10T403/32Articulated members
    • Y10T403/32606Pivoted
    • Y10T403/32951Transverse pin or stud
    • Y10T403/32967Attached to or integral with one member

Description

Oct. 19 {1926. 1,603,914

' M-P.HERMANN AUTOMATICALLY OPENING PENKNIFE Filed Jan. 21. 1926 INVENTOR:

Patented Get. 19, 1925.

UNETED STATES sates.

MAX 1?. HERIEANN, OF PHILADELPHIA, PENNSYLVANIA.

Application filed January 21, was. Serial at. 82,639. i

This invention, generally stated, relates to so-called pen or pocket knives and has more especial relation to a knife of this character equipped with a coiled spring controlled blade normally maintained in closed position by a finger piece having a wedgelike projection whereby upon release of the finger piece the blade may be caused to antomatically open. The leading object of the present invention is to provide a knife of the character above indicated which is of simple, compact, neat and inexpensive structure and in which the cutting blade is provided a more. positive action than other types of antomatically opening blades now upon the market.

ith these and other objects in view the invention consists of the novel construction hereinafter described and finally claimed.

The nature, characteristic features and Scope of the invention will be more fully understood from the following description taken in connection with the accompanying drawings forming part hereof, and in which:

Fig. 1 is a view in side elevation of a pocket knife embodying the invention.

Fig. 2 is a top or plan view thereof.

Fig. 3 is a view similar to Fig. 1 but viewed from the opposite side.

Fig. 4 is a view drawn to an enlarged seal-e in central section illustrating'details of construction.

F 5 is an end view of the knife.

F ig. 6 is a view in section taken upon the line 66 of Fig. 4.

Fig. 7 is an end view of the knife viewed from the opposite end of that seen in Fig. 5.

Fig. 8 is a fragmentary view illustrating the pivotal end of the cutting blade.

Fig. 9 is a view in detail of the spring for causing opening of the blade.

Fig. 10 is a longitudinal sectional view of Fig. 8.

Fig. 11 is a view of one of the side plates; and

Fig. 12 is an end view of the finger piece and its wedge-shaped projection.

For the purpose of illustrating my invention I have shown in the accompanying drawings one form [thereof which is at present preferred by me, since the same has been found in practice to give satisfactory and reliable results, although it is to be understood that the various instrumentalities of which my invention consists can be variously arranged and organized and that my invention is not limited to the precise arrangement and organization of the instrumentalities as herein shown and described.

Referring to the drawings in detail, the reference numeral 1 designates the two side plates of aso-called pen or pocket knife beween which plates is pivotally mounted as at 2 a cutting blade 3. Secured to the pivotal end of the cutting blade as at d is a piece of metal tape 6 which is bent around the end of the cutting blade and the free end of said piece of steel spring 6 carries a slide 7 movable along the back 8, which back 8 is preferably formed integral with.

the two side plates 1, as clearly shown in F 6. in practice good results have been obtained by forming in the rear of the blade 3 recess, as shown in Fig. 8, and coiling an end of the metal tape 6 in said recessed portion, as clearly shown in Fig. 4.. By this arrangement the metal tape 6 may be readily removed from the blade when desired, the blade 3 removed by slipping same from the pivot unit 2 through slot 20. Connected to the slide 7 is a coiled spring 9 secured to a pivotal end piece 10 at the rear of the knife handle, as is best seen in Fig. 5. Stops 17 are provided to limit the inward movement of the member 10. As is readily apparent with the knife blade in closed position, as clearly shown in Fig. i, the spring 9 is placed under tension and upon release of the cutting blade in a manner to be presently described, the said cutting blade is permitted to automatically open with a decided and positive movement. During this movement of spring contraction the metal tape 6 is substantially flattened out along the back of the knife handle in somewhat the position shown in Fig. 9. It is also apparent that in addition to the positive opening action of the cutting blade the knife actuating parts are readily accessible for the change of blades and repair purposes which is an advantageous feature. The pivotal end of the knife blade is provided with a tapered opening 11 and with a notched or recessed portion 12. Secured to one of the plates of the knife handle as by a pin 13 passing through the handle is a member 14 which covers one of the side plates 1 and is provided at its free end with a finger piece 15. Carried by the finger piece is a wedge-shaped projection 16 which is adapted to alternately engage the opening 11 and recess 12 of the cutting blade depending upon the position of said blade. In other words, when the cutting blade is in closed position as shown in the drawings the said projection 16 engages opening 11. When the cutting blade has been automatically opened, the said projection 16 engages with the recess 12 tolnaintain the blade in open and relatively rigid position. In practice, good results have been obtained by forming in the side walls 1 oppositely disposed apertures 18 and forming in the member 14 an aperture 19 and w ys or guides 23 to receive the slide parts 21 of the finger piece 15, see Figs. 6 and 11 to maintain. the finger piece in proper position.

That side 1 adjacent the finger piece is cut away at 22, see Fig. 11, so that the wedge shaped projection 16 may work therethrougrh. It will now be apparent that I have devised a novel and useful construction which embodies the features of advantage enu rnerated as desirable in the statement of the invention and the above description and whilel have in the present instance shown and described the preferred embodimentthereof which has been found in practice to give satisfactory and reliable results, it is to be understod that the same is susceptible of modification in various particulars without departing from the spirit or scope of the invention or sacrificing any of its advantages.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

A. liilifG of the character stated, coniprisiup; a pair oi": side plates forming a handle, a blade hinged therebetween, a member of metal tape connected to the pivoted end of said blade, a coiled spring including a slide for moving along; the handle back connecting said member and one end of said handle, and a finger piece fixed to one end of the handle adjacent the blade pivot point, the free end of said finger piece being arranged to detachably engage the pivot end of said blade to release same.

In testimony whereof, I have hereunto signed iny'nanie.

MAX 1 HERMANN.

US82639A 1926-01-21 1926-01-21 Automatically-opening penknife Expired - Lifetime US1603914A (en)

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US82639A US1603914A (en) 1926-01-21 1926-01-21 Automatically-opening penknife

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Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2530236A (en) * 1948-07-27 1950-11-14 Queen Cutlery Company Pocket knife
US2736959A (en) * 1952-05-27 1956-03-06 Simon Carl Friedrich Pocket knives
US2795128A (en) * 1955-05-17 1957-06-11 Ly Thaddeus Key case
US4719700A (en) * 1986-06-26 1988-01-19 Taylor Jr William J Knife opening mechanism
US5331741A (en) * 1992-08-10 1994-07-26 Taylor Jr William J Lever-actuated folding knife
US5813121A (en) * 1996-06-17 1998-09-29 Allway Tools, Inc. Automatically retractable utility knife
US5815927A (en) * 1996-01-11 1998-10-06 Collins; Walter W. Folding knife with actuatable safety locking mechanism
USD444368S1 (en) 1999-05-07 2001-07-03 American Safety Razor Retractable utility knife
US6263577B1 (en) 1998-10-06 2001-07-24 American Safety Razor Automatic spring retractable utility knife
US6370778B1 (en) 2000-12-13 2002-04-16 Matthew W. Conable Locking folding knife
US6397477B1 (en) 2000-07-19 2002-06-04 Walter W. Collins Spring-assisted folding knife
US6460433B1 (en) 1997-10-16 2002-10-08 C-Tech Ag Multipurpose hand device
US20040034937A1 (en) * 1995-07-29 2004-02-26 Peter Ackeret Multipurpose hand-held implement of the pocket-knife type
US20040068874A1 (en) * 2002-10-11 2004-04-15 Chi-Tung Chu Clasp knife
US6779425B2 (en) 2000-11-27 2004-08-24 Ctech Ag Multipurpose handheld implement
US6951055B1 (en) 2004-06-25 2005-10-04 Collins Walter W Folding utility knife
US20050217032A1 (en) * 2002-03-06 2005-10-06 Beatrice Bruggisser Multi-purpose hand-held device
US20060064877A1 (en) * 2002-10-08 2006-03-30 Fiskars Brands, Inc. Folding knife
US7062857B1 (en) 2002-10-23 2006-06-20 Taylor Cutlery Llc Knife with blade lock and lanyard lock
US7080457B2 (en) 2002-06-10 2006-07-25 Scott Sullivan Spring assisted folding knife
US7086157B2 (en) 2002-07-31 2006-08-08 The Great American Tool Company Inc. Folding knife having a biased blade
US7107686B2 (en) 2003-02-06 2006-09-19 Buck Knives, Inc. Spring assist knife
US7140110B2 (en) 2003-06-04 2006-11-28 Lake Ronald W Folding knife having a locking mechanism
US7146736B1 (en) 2004-08-30 2006-12-12 Collins Walter W Folding knife with cantilevered spring
US7246441B1 (en) 2004-07-15 2007-07-24 Collins Walter W Convertible knife system
US7296355B2 (en) 2003-10-10 2007-11-20 Kai U.S.A., Ltd. Adjustable blade-assisting mechanism for a folding knife
US7340838B2 (en) 2000-01-14 2008-03-11 Kai U.S.A., Ltd. Folding knife with safety lock
US7395599B2 (en) 2003-11-18 2008-07-08 Kai U.S.A., Ltd. Blade-assisting mechanism for a folding knife
US7458159B2 (en) 2004-11-12 2008-12-02 Kai U.S.A., Ltd. Folding knife having a locking mechanism
US7506446B2 (en) 2004-04-16 2009-03-24 Kai U.S.A., Ltd. Locking mechanism for a folding knife
US7774939B1 (en) 2004-04-16 2010-08-17 Kai U.S.A., Ltd. Stud-lock knife
US20110167647A1 (en) * 2010-01-11 2011-07-14 Donald Gringer Cutting implements
US8001693B2 (en) 2005-06-03 2011-08-23 Onion Kenneth J Closable knife with opening mechanism
US8161653B2 (en) 2007-11-12 2012-04-24 Leatherman Tool Group, Inc. Folding tool having a rotatable locking mechanism
USD660675S1 (en) 2011-06-09 2012-05-29 Allway Tools, Inc. Twin blade head for a knife
US8893389B2 (en) 2011-05-31 2014-11-25 Fiskars Brands, Inc. Cantilever spring assist knife
US20150047206A1 (en) * 2013-08-18 2015-02-19 Allen Millhouse Folding blade knife with flexible tendon and tension spring actuation
US9427878B2 (en) 2014-09-22 2016-08-30 Alltrade Tools Llc Spring assisted knife
USD779143S1 (en) 2014-04-25 2017-02-14 Unger Marketing International, Llc Window scraper
USD782271S1 (en) 2015-04-29 2017-03-28 Unger Marketing International, Llc Tool handle
US9656373B2 (en) 2012-01-14 2017-05-23 Leatherman Tool Group, Inc. Hand tool

Cited By (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2530236A (en) * 1948-07-27 1950-11-14 Queen Cutlery Company Pocket knife
US2736959A (en) * 1952-05-27 1956-03-06 Simon Carl Friedrich Pocket knives
US2795128A (en) * 1955-05-17 1957-06-11 Ly Thaddeus Key case
US4719700A (en) * 1986-06-26 1988-01-19 Taylor Jr William J Knife opening mechanism
US5331741A (en) * 1992-08-10 1994-07-26 Taylor Jr William J Lever-actuated folding knife
US6941604B2 (en) 1995-07-29 2005-09-13 Ctech Ag Multipurpose hand-held implement of the pocket-knife type
US20040034937A1 (en) * 1995-07-29 2004-02-26 Peter Ackeret Multipurpose hand-held implement of the pocket-knife type
US5815927A (en) * 1996-01-11 1998-10-06 Collins; Walter W. Folding knife with actuatable safety locking mechanism
US5813121A (en) * 1996-06-17 1998-09-29 Allway Tools, Inc. Automatically retractable utility knife
US6460433B1 (en) 1997-10-16 2002-10-08 C-Tech Ag Multipurpose hand device
US6263577B1 (en) 1998-10-06 2001-07-24 American Safety Razor Automatic spring retractable utility knife
US6438849B1 (en) 1998-10-06 2002-08-27 Safety Razor Company Automatic spring retractable utility knife
US20050022635A1 (en) * 1998-10-16 2005-02-03 Peter Ackeret Multipurpose handheld implement
US6948409B2 (en) 1998-10-16 2005-09-27 Ctech Ag Multipurpose handheld implement
USD444368S1 (en) 1999-05-07 2001-07-03 American Safety Razor Retractable utility knife
US7340838B2 (en) 2000-01-14 2008-03-11 Kai U.S.A., Ltd. Folding knife with safety lock
US6397477B1 (en) 2000-07-19 2002-06-04 Walter W. Collins Spring-assisted folding knife
US6779425B2 (en) 2000-11-27 2004-08-24 Ctech Ag Multipurpose handheld implement
US6370778B1 (en) 2000-12-13 2002-04-16 Matthew W. Conable Locking folding knife
US20050217032A1 (en) * 2002-03-06 2005-10-06 Beatrice Bruggisser Multi-purpose hand-held device
US20060200997A1 (en) * 2002-06-10 2006-09-14 Sullivan Scott L Spring assisted folding knife
US7080457B2 (en) 2002-06-10 2006-07-25 Scott Sullivan Spring assisted folding knife
US7543386B2 (en) 2002-06-10 2009-06-09 Sullivan Scott L Spring assisted folding knife
US7086157B2 (en) 2002-07-31 2006-08-08 The Great American Tool Company Inc. Folding knife having a biased blade
US20060064877A1 (en) * 2002-10-08 2006-03-30 Fiskars Brands, Inc. Folding knife
US6729029B1 (en) * 2002-10-11 2004-05-04 Chi-Tung Chu Clasp knife
US20040068874A1 (en) * 2002-10-11 2004-04-15 Chi-Tung Chu Clasp knife
US7062857B1 (en) 2002-10-23 2006-06-20 Taylor Cutlery Llc Knife with blade lock and lanyard lock
US7313866B2 (en) 2003-02-06 2008-01-01 Buck Knives, Inc. Spring assist knife
US7107686B2 (en) 2003-02-06 2006-09-19 Buck Knives, Inc. Spring assist knife
US7140110B2 (en) 2003-06-04 2006-11-28 Lake Ronald W Folding knife having a locking mechanism
US7296355B2 (en) 2003-10-10 2007-11-20 Kai U.S.A., Ltd. Adjustable blade-assisting mechanism for a folding knife
US7395599B2 (en) 2003-11-18 2008-07-08 Kai U.S.A., Ltd. Blade-assisting mechanism for a folding knife
US7774939B1 (en) 2004-04-16 2010-08-17 Kai U.S.A., Ltd. Stud-lock knife
US7506446B2 (en) 2004-04-16 2009-03-24 Kai U.S.A., Ltd. Locking mechanism for a folding knife
US6951055B1 (en) 2004-06-25 2005-10-04 Collins Walter W Folding utility knife
US7246441B1 (en) 2004-07-15 2007-07-24 Collins Walter W Convertible knife system
US7146736B1 (en) 2004-08-30 2006-12-12 Collins Walter W Folding knife with cantilevered spring
US7458159B2 (en) 2004-11-12 2008-12-02 Kai U.S.A., Ltd. Folding knife having a locking mechanism
US8001693B2 (en) 2005-06-03 2011-08-23 Onion Kenneth J Closable knife with opening mechanism
US20110203115A1 (en) * 2005-06-03 2011-08-25 Onion Kenneth J Closable knife with opening mechanism
US8307555B2 (en) 2005-06-03 2012-11-13 Onion Kenneth J Closable knife with opening mechanism
US8161653B2 (en) 2007-11-12 2012-04-24 Leatherman Tool Group, Inc. Folding tool having a rotatable locking mechanism
US20110167647A1 (en) * 2010-01-11 2011-07-14 Donald Gringer Cutting implements
US8938883B2 (en) 2010-01-11 2015-01-27 Allway Tools, Inc. Cutting implements
US8893389B2 (en) 2011-05-31 2014-11-25 Fiskars Brands, Inc. Cantilever spring assist knife
USD660675S1 (en) 2011-06-09 2012-05-29 Allway Tools, Inc. Twin blade head for a knife
US9656373B2 (en) 2012-01-14 2017-05-23 Leatherman Tool Group, Inc. Hand tool
US20150047206A1 (en) * 2013-08-18 2015-02-19 Allen Millhouse Folding blade knife with flexible tendon and tension spring actuation
US9132558B2 (en) * 2013-08-18 2015-09-15 Allen Millhouse Folding blade knife with flexible tendon and tension spring actuation
USD779143S1 (en) 2014-04-25 2017-02-14 Unger Marketing International, Llc Window scraper
US9427878B2 (en) 2014-09-22 2016-08-30 Alltrade Tools Llc Spring assisted knife
USD782271S1 (en) 2015-04-29 2017-03-28 Unger Marketing International, Llc Tool handle
USD829526S1 (en) 2015-04-29 2018-10-02 Unger Marketing International, Llc Tool handle

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