US1451607A - Knife - Google Patents

Knife Download PDF

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Publication number
US1451607A
US1451607A US55217822A US1451607A US 1451607 A US1451607 A US 1451607A US 55217822 A US55217822 A US 55217822A US 1451607 A US1451607 A US 1451607A
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United States
Prior art keywords
blade
locking
closed
knife
finger
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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
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Langdon B Bates
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Langdon B Bates
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Application filed by Langdon B Bates filed Critical Langdon B Bates
Priority to US55217822 priority Critical patent/US1451607A/en
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Publication of US1451607A publication Critical patent/US1451607A/en
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Expired - Lifetime legal-status Critical Current

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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
    • B26B1/042Hand knives with adjustable blade; Pocket knives with pivoted blade lockable in adjusted position by a spring biased locking lever pivoting around an axis parallel to the pivot axis of the blade

Description

Patented Apr. 10, 1923.

UNITED STATES;

PATEN i orFicE.

LANVGDON B. BATES, or 'rrroivrnsroiv, MAINE.

KNIFE.

' Application filed April 13, 1922. Serial at. 552,178.

1 To all whom it mag concern:

for positively locking the blade respectively in opened and closed positions, and means forr'eleasin'g said locking means.

As a further object the invention contemplates in connection with'a knife of the char acter described, means operable upon releasing of the means for locking the blade in closed position, for effecting an initialopening movement of the blade. 6

As. a still further object the invention contemplates a folding knife which is comparatively simple in its construction and operation, inexpensive to manufacture, and strong and durable in its structure.

With the above recited and other objects in "iew, the invention residesin the novel construction set forth inthef following specification, particularly pointed out in the appended claims and illustrated in the accompanying drawings, it being understood that the right is reserved to embodiments other than those actually illustrated herein to the full extent indicated by the general meaning of the terms in which the claims are expressed.

In-the drawings- Figure 1 is a longitudinal sectional view through a knife constructed in accordance with the invention, illustrating the blade locked in closed condition.

Fig. 2 is a similar view illustrating the blade released and partly opened.

Fig. 3 is a similar view illustrating the I blade locked in open position.

Fig. 4 is a top plan view thereof.

Fig. 5 is a fragmentary enlarged detail longitudinal sectional View.

Referring to the drawings by characters of reference, 10 designates the handle of a jackknife which is provided with a central longitudinally extending recess "11 within one end of which the blade 12 is pivoted by 7 means of a pivot pin 13, A leaf spring 1 1 is mounted within the recess and is provided at its free terminal with a finger 15 which coa-cts respectively with the notches 16 and 17 of the blade to retain and lock the same respectively in its closed and opened positions. In order to provide means for flexing the leaf'spring 14 to disengage the finger 15 from the :notches 16 and 17 whereby to release the blade for opening or closingmovement, a lever 18 is employed which is pivoted within the recess by means of a pivot pin.

19, -the free terminal of said lever being bent laterally to provide a manipulating portion 20. The opposite terminal is provided with an extension 21 which when the knife is! closed is'normally disposed in the path of movement of the lug or projection 22 formedon the blade whereby to perform the dual function of an'auxiliary lock against opening of the blade and at the same time-to-engage with and 'fiex the leaf spring 1 1 for the purpose of releasing or disengap' ing the finger 15 from the notches 16 and 1 I In order to provide means for automatically effecting an initial opening movement of the blade upon release of the extension 21 from the lug or extension 22 and the finger 15 from the notch 16, a second spring 23 is employed which is secured at one extremity by the rivetsv 24 within the recess and is provided at its opposite end with a laterally 'bent terminal 25 which receives and engages the notch 26 in the blade.

In use and operation when the knife is closed as illustrated in Fig. 1 the finger 15 engages the notch 16 to lock the blade against opening. Simultaneously the extension 22 of the lever 18 is disposed in the path I of movement of the lug or extension 22 of the blade. In this position the terminal 25 p of the spring 23 engaged by the notch 26 of the blade places the spring 23 under tension. When it is desired to open the knife the operator engages the thumb or finger nail under the manipulating portion or terminal 20 ofthe lever 18 which overlies the handle and by moving the same away from'the handle throws the extension 21 out of the path of movement of the lug or extension 22 of the blade, at the same time flexing the leaf spring 11 to disengage the finger 15 from the notch 16 of the blade. The spring 23 will then function to effect an initial opening operation of the blade to inform the operator the blade'is free to be swung to entire open position; When the blade has been swung to its extreme open position, the finger l5 willengage and coact with the notch to disengage the finger 15 from the notch 17.

I claim: 1. The combination with afolding knife 'including a handle and a blade pivoted thereto having notched portions therein, of resilient means having a locking extremity adapted to respectively engage with the looking notches for positively retaining and locking said blade in opened or closed positions, and means carried by said handle and engageable With the locking means for effecting the release thereof, said releasing means having an element thereof normally disposed in the path of movement of a portion of the blade when in closed position to constitute an auxiliary means for locking the same in closed position.

2. The combination with a folding knife including a handle and a blade pivoted thereto having notched portions therein, of resilient means having a locking extremity adapted to respectively engage with the locking notches for positively retaining and locking said blade in opened or closed positions, means carried by said handle and engageable with the locking means for effecting the release thereof, said releasing means having an element thereof normally disposed in the path of movement. of a portion of the blade when in closed position to constitute an aux- I ihary means for locking the same in closed position, and means engageable by the blade when in closed position adapted upon release of the locking means to effect an initial opening movement of the blade.

3. The combination with a folding knife including a handle and a blade pivoted thereto, of means for positively locking and spring to disengage the finger from said notches to release the blade for free pivotal movement, and a lever pivotally associated with said handle and adapted upon manipulation to flex the spring for releasing the finger from said notches, an extension on said blade constituting together with the lever an auxiliary locking means when the lever is in normal position for retaining the blade in closed position.

LANGDON B. BATES.

US55217822 1922-04-13 1922-04-13 Knife Expired - Lifetime US1451607A (en)

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US55217822 US1451607A (en) 1922-04-13 1922-04-13 Knife

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1105758B (en) * 1960-03-04 1961-04-27 Lauterjung Puma Werk Flap pocket knife, especially Jagdtaschenmesser
US4351126A (en) * 1979-12-03 1982-09-28 Simonson Theodore K Foldable gaff hook
US4669188A (en) * 1984-12-21 1987-06-02 Eskilstuna Knivfabriks Ab Folding knife
US5461786A (en) * 1995-02-24 1995-10-31 Miller; Ted Lock blade knife
US6088860A (en) * 1996-12-20 2000-07-18 Fiskars Inc. Pocket tool with removable jaws
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
US6779425B2 (en) 2000-11-27 2004-08-24 Ctech Ag Multipurpose handheld implement
US20050217032A1 (en) * 2002-03-06 2005-10-06 Beatrice Bruggisser Multi-purpose hand-held device
US7124509B1 (en) * 2003-09-19 2006-10-24 Grant Woodrow Hawk Spring powered toggle joint lock for a folding knife
US20080172884A1 (en) * 2007-01-19 2008-07-24 Kantas Products Co., Ltd. Folding knife with half handle
US20090241348A1 (en) * 2008-03-26 2009-10-01 Mentor Group Llc Adjustable diameter pivot shaft for a hand tool
US20110162211A1 (en) * 2008-03-26 2011-07-07 Mentor Group, L.L.C. Adjustable Diameter Pivot Shaft for a Hand Tool

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1105758B (en) * 1960-03-04 1961-04-27 Lauterjung Puma Werk Flap pocket knife, especially Jagdtaschenmesser
US4351126A (en) * 1979-12-03 1982-09-28 Simonson Theodore K Foldable gaff hook
US4669188A (en) * 1984-12-21 1987-06-02 Eskilstuna Knivfabriks Ab Folding knife
US5461786A (en) * 1995-02-24 1995-10-31 Miller; Ted Lock blade 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
US6088860A (en) * 1996-12-20 2000-07-18 Fiskars Inc. Pocket tool with removable jaws
US6305041B1 (en) 1996-12-20 2001-10-23 Alterra Holdings Corporation Pocket tool with removable jaws
US6460433B1 (en) 1997-10-16 2002-10-08 C-Tech Ag Multipurpose hand device
US6948409B2 (en) 1998-10-16 2005-09-27 Ctech Ag Multipurpose handheld implement
US20050022635A1 (en) * 1998-10-16 2005-02-03 Peter Ackeret Multipurpose handheld implement
US6779425B2 (en) 2000-11-27 2004-08-24 Ctech Ag Multipurpose handheld implement
US20050217032A1 (en) * 2002-03-06 2005-10-06 Beatrice Bruggisser Multi-purpose hand-held device
US7124509B1 (en) * 2003-09-19 2006-10-24 Grant Woodrow Hawk Spring powered toggle joint lock for a folding knife
US20080172884A1 (en) * 2007-01-19 2008-07-24 Kantas Products Co., Ltd. Folding knife with half handle
US20090241348A1 (en) * 2008-03-26 2009-10-01 Mentor Group Llc Adjustable diameter pivot shaft for a hand tool
US7905023B2 (en) * 2008-03-26 2011-03-15 Mentor Group, L.L.C. Adjustable diameter pivot shaft for a hand tool
US20110162211A1 (en) * 2008-03-26 2011-07-07 Mentor Group, L.L.C. Adjustable Diameter Pivot Shaft for a Hand Tool
US8261633B2 (en) * 2008-03-26 2012-09-11 Mentor Group, L.L.C. Adjustable diameter pivot shaft for a hand tool

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