US1412373A - Self-opening pocketknife - Google Patents

Self-opening pocketknife Download PDF

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Publication number
US1412373A
US1412373A US486051A US48605121A US1412373A US 1412373 A US1412373 A US 1412373A US 486051 A US486051 A US 486051A US 48605121 A US48605121 A US 48605121A US 1412373 A US1412373 A US 1412373A
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Prior art keywords
blade
spring
opening
knife
self
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Expired - Lifetime
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US486051A
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Howard F Shields
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B1/00—Hand knives with adjustable blade; Pocket knives
    • B26B1/02—Hand knives with adjustable blade; Pocket knives with pivoted blade
    • B26B1/06—Hand knives with adjustable blade; Pocket knives with pivoted blade with loosely-inserted spring

Definitions

  • This invention relates to self opening pocket knives and more particularly to an improvement in the structure for the pocket knife whereby it will not be necessary to have the blade extending a slight distance from the blade holder in order to obtain a grip on the blade for opening it.
  • the primary object of the invention is to provide a pocket knife having a spring arrangement engageable with the blade wnereby the spring may be manually released for permitting the blade to be thrownpartially open whereby it may be conveniently gripped'to be pulled fully open.
  • Figure 1 is a side elevation of the device constructed in'accordance with my invention showing the blade in open position.
  • Figure 2 is a longitudinal section showing the blade closed.
  • Figure 3 is a longitudinal transverse section showing the blade closed with the mechanism in position for being released to release the blade.
  • the pocket knife casing 1 consists f the longitudinal strips 2 and 3 between which a space 4 is provided to receive the blade 5, the latter being pivotally mounted upon the pivot member (3 in the usual manner.
  • a housing 8 is formed to receive a coil spring which is disposed in the position shown in Fig. 2, one end of the spring 9 being provided with a cap 10 whereby the cap may be depressed to contact the spring.
  • Fig, 2 it will be noted that the wall 3 is cut at an angle or in a manner as indicated at 11 and this is to permit the arcuate swinging movement of the pressure pin 12 carried by the knife blade when it is swung on its pivot 6. lVhen the blade is closed the pin 12 will engage the spring cap Specification of Letters Patent.
  • a latch pin 13 is inserted through a side opening in the outer wall 7 and permit it to engage a groove in the top of the cap 10 as shown in Fig. 2 so that the cap will be held in locked position.
  • the releasing pin 13 is provided with a knob 14 whereby it may be conveniently gripped, and it will be obvious from the construction described and illustrated that when the knob is pulled out- 'ardly to release the pin 13 from the groove in the spring cap, the spring will act to force the spring cap upwardly and throw the knife blade upwardly by virtue of the contact with the pin 12 carried by the knife blade.
  • the blade when the blade is thrown partially open it may be conveniently grasped by the fingers of the user in order that it may be swung fully open to be used.
  • ll. knife of the character described comprising a knife casing having a knife blade adapted to fold into the casing one side of the casing provided with a compartment, a coil spring mounted in the compartment and equipped with a spring cap, the said knife blade having a projecting pin adapted to engage the spring cap when the knife blade is closed, and means to releasably hold the spring cap in position against the pressure of the spring when the knife blade is held within the casing.
  • a self opening pocket knife comprising a knife casing. a blade adapted to fold into the casing and equipped with a laterally projecting pin, a compartment formed in the casing in the path of movement of the said pin when the knife blade is swung to closed position, a spring arranged within the compartment, a spring cap mounted on the upper end of the spring, the said cap being provided with a transverse groove in its upper surface, and a releasing pin extending laterally through the side of the casing and adapted to engage the said groove in the spring cap when the blade is swung to closed position whereby the blade may be held within the casing and forcibly ejected therefrom when the said releasing pin is disengaged from the spring cap.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Knives (AREA)

Description

H. F. SHIELDS.
SELF OPENING POCKETKNIFE.
APPLICATION FILED JULY 20,1921.
Patented Apr. 11,
HOWARD IF. SHIELDS, OF EUREKA, CALIFORNIA.
SELF-OPENING- POGKETKNIFE.
Application filed July 20, 1921.
T 0 all whom it may concern:
Be it known that I, HowARD F. SHIELDS, a citizen of the United States, residing at Eureka, in the county of Humboldt and State of California, have invented certain new and useful Improvements in Self-Opening Pocket-knives, of which the following is a specification.
This invention relates to self opening pocket knives and more particularly to an improvement in the structure for the pocket knife whereby it will not be necessary to have the blade extending a slight distance from the blade holder in order to obtain a grip on the blade for opening it.
The primary object of the invention is to provide a pocket knife having a spring arrangement engageable with the blade wnereby the spring may be manually released for permitting the blade to be thrownpartially open whereby it may be conveniently gripped'to be pulled fully open.
Other objects of the invention will appear upon consideration of the following detail description and accompanying drawings, wherein 1 Figure 1 is a side elevation of the device constructed in'accordance with my invention showing the blade in open position.
Figure 2 is a longitudinal section showing the blade closed.
Figure 3 is a longitudinal transverse section showing the blade closed with the mechanism in position for being released to release the blade.
Referring to the drawing by numerals, the pocket knife casing 1 consists f the longitudinal strips 2 and 3 between which a space 4 is provided to receive the blade 5, the latter being pivotally mounted upon the pivot member (3 in the usual manner.
Laterally spaced from the side member 3 is an outer panel 7 through which the pivot member 6 extends. Between the outer panel 7 and the space 4 which contains the knife blade, a housing 8 is formed to receive a coil spring which is disposed in the position shown in Fig. 2, one end of the spring 9 being provided with a cap 10 whereby the cap may be depressed to contact the spring.
By referring to Fig, 2 it will be noted that the wall 3 is cut at an angle or in a manner as indicated at 11 and this is to permit the arcuate swinging movement of the pressure pin 12 carried by the knife blade when it is swung on its pivot 6. lVhen the blade is closed the pin 12 will engage the spring cap Specification of Letters Patent.
Patented Apr. 11, 1922.
Serial No. 486,051.
l0 and force the spring downwardly whereupon a latch pin 13 is inserted through a side opening in the outer wall 7 and permit it to engage a groove in the top of the cap 10 as shown in Fig. 2 so that the cap will be held in locked position. The releasing pin 13 is provided with a knob 14 whereby it may be conveniently gripped, and it will be obvious from the construction described and illustrated that when the knob is pulled out- 'ardly to release the pin 13 from the groove in the spring cap, the spring will act to force the spring cap upwardly and throw the knife blade upwardly by virtue of the contact with the pin 12 carried by the knife blade. Of course, when the blade is thrown partially open it may be conveniently grasped by the fingers of the user in order that it may be swung fully open to be used.
lVliat is claimed is:-
1. ll. knife of the character described comprising a knife casing having a knife blade adapted to fold into the casing one side of the casing provided with a compartment, a coil spring mounted in the compartment and equipped with a spring cap, the said knife blade having a projecting pin adapted to engage the spring cap when the knife blade is closed, and means to releasably hold the spring cap in position against the pressure of the spring when the knife blade is held within the casing.
52. A self opening pocket knife comprising a knife casing. a blade adapted to fold into the casing and equipped with a laterally projecting pin, a compartment formed in the casing in the path of movement of the said pin when the knife blade is swung to closed position, a spring arranged within the compartment, a spring cap mounted on the upper end of the spring, the said cap being provided with a transverse groove in its upper surface, and a releasing pin extending laterally through the side of the casing and adapted to engage the said groove in the spring cap when the blade is swung to closed position whereby the blade may be held within the casing and forcibly ejected therefrom when the said releasing pin is disengaged from the spring cap.
In testimony whereof, I have aiiixed my signature in the presence of two witnesses.
HOlVARD F. SHIELDS.
Witnesses:
LEONA STUBBS, F. GEORGESON.
US486051A 1921-07-20 1921-07-20 Self-opening pocketknife Expired - Lifetime US1412373A (en)

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US486051A US1412373A (en) 1921-07-20 1921-07-20 Self-opening pocketknife

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US486051A US1412373A (en) 1921-07-20 1921-07-20 Self-opening pocketknife

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US1412373A true US1412373A (en) 1922-04-11

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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2491629A (en) * 1945-11-13 1949-12-20 Zenith Radio Corp Antenna
US2808646A (en) * 1954-06-08 1957-10-08 Junior Ernst Lohr Pocket 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
US6779425B2 (en) 2000-11-27 2004-08-24 Ctech Ag Multipurpose handheld implement
US20040244205A1 (en) * 2003-02-06 2004-12-09 Buck Knives, Inc. Spring assist knife
US20050097754A1 (en) * 2003-10-10 2005-05-12 Kai U.S.A., Ltd. Dba Kershaw Knives Adjustable blade-assisting mechanism for a folding knife
US20050097755A1 (en) * 2003-10-31 2005-05-12 Galyean Timothy J. Folding knife having a locking mechanism
US20050132576A1 (en) * 2003-11-18 2005-06-23 Onion Kenneth J. Blade-assisting mechanism for a folding knife
US20050217032A1 (en) * 2002-03-06 2005-10-06 Beatrice Bruggisser Multi-purpose hand-held device
US20050229401A1 (en) * 2004-04-16 2005-10-20 Onion Kenneth J Locking mechanism for a folding knife
US20050241154A1 (en) * 2003-06-04 2005-11-03 Lake Ronald W Folding knife having a locking mechanism
US20060174490A1 (en) * 2004-11-12 2006-08-10 Kai U.S.A., Ltd., Dba Kershaw Knives Folding knife having a locking mechanism
US20070068000A1 (en) * 2005-06-03 2007-03-29 Kai U.S.A., Ltd., Dba Kershaw Knives Closable knife with opening mechanism
US7340838B2 (en) 2000-01-14 2008-03-11 Kai U.S.A., Ltd. Folding knife with safety lock
US7774939B1 (en) 2004-04-16 2010-08-17 Kai U.S.A., Ltd. Stud-lock knife
US8161653B2 (en) 2007-11-12 2012-04-24 Leatherman Tool Group, Inc. Folding tool having a rotatable locking mechanism
US9878455B1 (en) * 2009-11-24 2018-01-30 Michael Gregory Perez Folding knife assembly
US10688672B1 (en) 2009-11-24 2020-06-23 Michael Gregory Perez Folding knife assembly

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2491629A (en) * 1945-11-13 1949-12-20 Zenith Radio Corp Antenna
US2808646A (en) * 1954-06-08 1957-10-08 Junior Ernst Lohr Pocket 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
US6460433B1 (en) 1997-10-16 2002-10-08 C-Tech Ag Multipurpose hand device
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
US7340838B2 (en) 2000-01-14 2008-03-11 Kai U.S.A., Ltd. Folding knife with safety lock
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
US7313866B2 (en) 2003-02-06 2008-01-01 Buck Knives, Inc. Spring assist knife
US20060123632A1 (en) * 2003-02-06 2006-06-15 Buck Knives, Inc. Spring assist knife
US7107686B2 (en) 2003-02-06 2006-09-19 Buck Knives, Inc. Spring assist knife
US20040244205A1 (en) * 2003-02-06 2004-12-09 Buck Knives, Inc. Spring assist knife
US20050241154A1 (en) * 2003-06-04 2005-11-03 Lake Ronald W Folding knife having a locking mechanism
US7140110B2 (en) 2003-06-04 2006-11-28 Lake Ronald W Folding knife having a locking mechanism
US20050097754A1 (en) * 2003-10-10 2005-05-12 Kai U.S.A., Ltd. Dba Kershaw Knives Adjustable blade-assisting mechanism for a folding knife
US7296355B2 (en) 2003-10-10 2007-11-20 Kai U.S.A., Ltd. Adjustable blade-assisting mechanism for a folding knife
US20050097755A1 (en) * 2003-10-31 2005-05-12 Galyean Timothy J. Folding knife having a locking mechanism
US7395599B2 (en) 2003-11-18 2008-07-08 Kai U.S.A., Ltd. Blade-assisting mechanism for a folding knife
US20050132576A1 (en) * 2003-11-18 2005-06-23 Onion Kenneth J. Blade-assisting mechanism for a folding knife
US20050229401A1 (en) * 2004-04-16 2005-10-20 Onion Kenneth J Locking 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
US20060174490A1 (en) * 2004-11-12 2006-08-10 Kai U.S.A., Ltd., Dba Kershaw Knives Folding knife having a locking mechanism
US7458159B2 (en) 2004-11-12 2008-12-02 Kai U.S.A., Ltd. Folding knife having a locking mechanism
US20070068000A1 (en) * 2005-06-03 2007-03-29 Kai U.S.A., Ltd., Dba Kershaw Knives Closable knife with opening 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
US9878455B1 (en) * 2009-11-24 2018-01-30 Michael Gregory Perez Folding knife assembly
US10688672B1 (en) 2009-11-24 2020-06-23 Michael Gregory Perez Folding knife assembly

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