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Publication numberUS1454665 A
Publication typeGrant
Publication dateMay 8, 1923
Filing dateSep 22, 1921
Priority dateSep 22, 1921
Publication numberUS 1454665 A, US 1454665A, US-A-1454665, US1454665 A, US1454665A
InventorsJohn Bobek
Original AssigneeJohn Bobek
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Knife lock
US 1454665 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

May s, 1923.

1,454,665 J. BoBEK KNIFE LOCK Filed Sept. 22 1921 Fis. 1

1.5 z2 VV@ atto: new

Patented May 8, 1923.



Application led September 22, 1921. Serial No. 502,347.

T 0 all whom t may concern:

Be it known that I, JOHN Bonini, a citizen of Czechoslovakia, residing at Trevorton, in the county of Northumberland and State of Pennsylvania, have invented certain new and useful Improvements in Knife Locks, of which the following is a specification.

The primary object of the invention is the provision of a safety lock for pocket knives and the like whereby the blade may be retained in its open position securely looked against accidental closing, the blade, however, being readily closed whenever desired by the operator.

A further object of the invention is the provision of a pocket knife having a locking attachment for the blade thereof readily operable when the blade is open and-out of the way when the blade is closed, the construction being simple and inexpensive to manufacture.

A still further object of the invention is to prevent the accidental closing of the blade of a pocket knife which sometimes occurs to the injury of the owner, the invention being readily positioned for locking the blade open when desired to use the knife and then readily released when the knife is to be closed.

With these general objects in view, the in vention consists of the novel combination and arrangement of parts hereinafter more fully described in connection with the accompanying drawing and in which like reference characters designate corresponding parts throughout the several views.

In the drawing,

Figure 1 is an elevational view of a knife provided with my invention and with parts broken away,

Figure 2 is a plan view of the back of the knife in its open position as shown in Figure 1,

Figure S is a central longitudinal sectional view of the knife with the blade closed,

Figure 4 is a plan view thereof taken from the front of the knife,

Figure 5 is an enlarged transverse sectional view through the blade taken substantially upon line V-V of Figure 1, and

Figure 6 is a perspective view of the elements of the locking member detached from the knife blade and disassembled.

Referring more in detail to the drawing,

the invention is illustrated in connection with a pocket knife having substantially the usual form of handle 10 with the blade 11 pivoted to the handle by means of a pin 12 for folding within space or chamber 13 provided in the handle 10 adapted for receiving the blade. The back spring` 14 of the handle is normally in abutment with the rear shoulder 15 of the blade 11 when the blade is open as illustrated in Figures 1 and 2 of the drawing.

A rectangular bore 16 is provided in the rear end of the blade 11 between the shoulder 15 and the point of pivotal movement 12, the said bore being adapted for the sliding reception of a rectangular bolt 17. A pin 18, rectangular in cross section is slidably positioned through a slot 19 in the rear edge of the blade 11 having screw threaded connection with the bolt 17 by means of a threaded reduced shank 2O upon the inner end of said pin.

lt will be seen that the bolt 17 may be slidably moved longitudinally of the bore 16 by means of the pin 18 when grasping or engaging the knurled knob 21 on the outer end of the pin 1S. ln this manner, the bolt 17 is positioned entirely within the bore 16 when desired to close the blade 11 as shown in Figures 3 and 4 ofthe drawing and is projected inwardly of the chamber 13 of the handle 10 when desired to lock the blade 11 in its open position as shown in Figures 1 and 2. The bolt 17 engages the spring 14rwhen in its locking position as shown in Figure 1 and this prevents the closing of the blade 11.

A leaf spring 22 having a squared opening 23 is mounted upon the pin 18 and bears upon the back of the blade 11 for the purpose of holding the bolt 17 against accidental sliding movement and whereby the bolt 17 is retained either projected or retracted against accidental movement until it is desired to manually shift the bolt by engaging the hand of the operator with the knob 21. The complete operation of the device will be apparent from this detailed description thereof, the serviceable operation of the knife being unaffected by the invention but rendered more safe by preventing the accidental closing of the blade during the cutting operation. While the form of the invention set forth is believed preferable, it will nevertheless be understood that changes may be made therein without departing from the Spirit and scope of the inlongitudinal slot in the back thereof comvention. munieating with said bore7 a squared pin lVhat is claimed as new is: slidable in said slot and carried by the bolt, In aknife comprising a handle having a knurled finger engaging' knob upon the l5 5 a blade pivotally Connected thereto, the said outer end of the pin and a position retainblade having a rectangular bore open at the ing spring upon the pin between said knob pivoted end of the blade, a rectangular bolt and the back of the blade when the device slidable in Said bore adapted for projectis assembled. ing into the handle When the blade is open n testimony7 whereof I affix my signature. 20 10 with the bolt positioned at the rearward limit of its movement, the blade having a JOHN BOBEK.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4897922 *Jul 17, 1989Feb 6, 1990Ventura Forge, Inc.Folding knife
US6338431Jan 14, 2000Jan 15, 2002Kai U.S.A. Ltd.Locking knife blade with moving locking mechanism on blade
US6363615Jun 17, 2000Apr 2, 2002Taylor CutleryFolding knife with rotatable locking element and axial spring
US6378214Jun 8, 2000Apr 30, 2002Kai U.S.A. Ltd.Locking knife blade with moving locking mechanism on blade
US6397476Aug 25, 2000Jun 4, 2002Kai U.S.A. Ltd.Opening and closing assisting mechanism for a folding knife
US6591504Jul 12, 2001Jul 15, 2003Kat U.S.A. Ltd.Folding knife with safety lock
US6701621May 8, 2002Mar 9, 2004Charles L. KainReleasable double locking knife
US6959494Oct 7, 2003Nov 1, 2005Camillus Cutlery CompanyFolding blade knife with spring assisted pivoting feature
US7032315 *Jun 2, 2003Apr 25, 2006Busse Jerry PFolding knife with locking blade
US7107686Feb 6, 2004Sep 19, 2006Buck Knives, Inc.Spring assist knife
US7140110Jun 4, 2004Nov 28, 2006Lake Ronald WFolding knife having a locking mechanism
US7296355Oct 12, 2004Nov 20, 2007Kai U.S.A., Ltd.Adjustable blade-assisting mechanism for a folding knife
US7302760Jan 5, 2005Dec 4, 2007Fiskar Brands, Inc.Folding knife with dual-action piston
US7313866Jan 31, 2006Jan 1, 2008Buck Knives, Inc.Spring assist knife
US7337486Apr 25, 2006Mar 4, 2008Leatherman Tool Group, Inc.Hand tool
US7340837Apr 25, 2006Mar 11, 2008Busse Jerry PFolding knife with locking blade
US7340838Jun 16, 2003Mar 11, 2008Kai U.S.A., Ltd.Folding knife with safety lock
US7395599Nov 18, 2004Jul 8, 2008Kai U.S.A., Ltd.Blade-assisting mechanism for a folding knife
US7458159Nov 14, 2005Dec 2, 2008Kai U.S.A., Ltd.Folding knife having a locking mechanism
US7506446Apr 16, 2004Mar 24, 2009Kai U.S.A., Ltd.Locking mechanism for a folding knife
US7578064Mar 10, 2008Aug 25, 2009Busse Jerry PFolding knife with locking blade
US7676931Jun 14, 2005Mar 16, 2010Leatherman Tool Group, Inc.Folding knife
US7774939Jan 28, 2005Aug 17, 2010Kai U.S.A., Ltd.Stud-lock knife
US8001693Jun 5, 2006Aug 23, 2011Onion Kenneth JClosable knife with opening mechanism
US8161653Nov 12, 2007Apr 24, 2012Leatherman Tool Group, Inc.Folding tool having a rotatable locking mechanism
US8307555May 3, 2011Nov 13, 2012Onion Kenneth JClosable knife with opening mechanism
USRE42906 *Jun 15, 2005Nov 15, 2011Kai U.S.A., Ltd.Folding knife with safety lock
U.S. Classification30/161
International ClassificationB26B1/04, B26B1/00
Cooperative ClassificationB26B1/048
European ClassificationB26B1/04D