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Publication numberUS1226636 A
Publication typeGrant
Publication dateMay 22, 1917
Filing dateMay 20, 1916
Priority dateMay 20, 1916
Publication numberUS 1226636 A, US 1226636A, US-A-1226636, US1226636 A, US1226636A
InventorsWallace R Brown
Original AssigneeWallace R Brown
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1226636 A
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Description  (OCR text may contain errors)



APPLxcATloN FILED MAYzo. 191e.

1,226,636. Patented May 22,1917.

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l Specification of Letters Patent.

Patented May 2,2, 1917.

Application led May 20, 1916. Serial No. 98,751.

To all 'whom imag concern: i

Be it known tbatLNl/'ALLAGE R. BROWN, a citizen of the United States, and a lresident of Olean,l in theeountyof Ga'ttaraugus and State ofl New WYOrk, havefin'vented a new and ImprovedwTool, of. which the' fol'- lowing is a full,clear, and eXactdescrip tion.

Among thezprincipal objects which the present invention has `in view are to provide a pocket knife, the handle ofwhich is adapted for use as a-blade-holder, and to provide a series of blades adapted for temporary mounting in said handle; to guide the blades when being applied to said handle; to provide means for holding a *blade in said handle; and to provide means for v readily` disengaging a blade from said handle.


Figure 1 is a side elevation of a tool constructed and arranged for service in accordance with the present invention;

Fig. 2 is a similar view, the side plate of the handle being removed, the view being taken as on the line 2-2 in Fig. 4, and showing a detachable blade disposed as in service:

Fig. 3 isa similar view showing the blade as partially withdrawn from its service position;

Fig. 4 is a cross section on an enlarged scale, the section being 'taken as on the line 4-4 in Fig. 2;

Fig. 5 is a detail view showing an alternative blade supportable from the handle.


As shown in the drawings, the holder for tool blades, such as the screw-driver 10 and file 11, is the handle of the knife blade 12, which is permanently incorporated with the said handle to form a folding or pocket-knife. The blade 12 is pivotally mounted between the reinforced ends 13 of the handle plates 14. The pivot 15, which holds the blade 12, is' headed on the Vouter side of the reinforcing ends 13, as is usual in the construction of knives of the general character here indicated.

At the opposite end of the handle, a spacing pin 16 is provided. The pin 24 serves normally as a rest for the free end 17 of a locking spring 18. The spring 18 is held between the handle plates by an anchor pin 19. The extremity of the end 17 projects `beyond the pin 16 to form a guide rest for thewedge shank 20 with which each of the blades, such. as 10 and 11, is provided.

i When the separable blades, suchas 10 and 11, `are removedfrom the handle, the knife blade 12 may be disposed in closed or open position, as desired, and is so held by the end 21 of the spring 18 in thev usual manner. A like oflice is performed for the bladeslO and 11, by the end 17 of the spring 18, which holds the shank 20 in firm contact with the pin 16, and holds the nick 22 with which the extension 20 is provided, in engagement with said pin.

Zhen 'the nick 22 is thus engaged by the pin `16, an abutment 23 with which each of the blades is provided, rests rmly against the extremity of the end 17, as best shown in Fig. 2 of thedrawings. The back edge 25 of the shank 20, when the blades are held in service in the handle, rests firmly on the inner surface of -the end 17, which corrects any tendency of the blade to rook on the pin 16.

The shank 2O has an offset 26 extending from the edge of the blade opposite to that in which is formed the abutment 23. The offset 26, as shownbestin Fig. 2 of ythe drawings, rests in service between the rein'- forced ends 13 to assist in resisting the torsionalstrain on the screw-driver 10 and le 11, or other tool blade, when used.


When provided with aconstruction such as described and as shown in the accompanying drawings, any one of the tool blades having a shank 20 provided `with, a nick 22 and an abutment 23, is inserted in the handle having the plates 14, by. resting the extremity of the shank 20 on the extremity of the end 17 where the'same protrudes beyond the pin 16. The extremity of the shank 20 is then inserted between the pin 16 and end 17, so that the blade on being pressed into the handle, forces the end 17 of the spring 18 backward untilthe nick 22 registers with the pin 16. The action of the spring then forces the nick to engage the pin to lock the blade in the-handle. It will be found that at the moment of engagement by the nick 22 of the pin 16, the eX- tremity of the end 17 engages the abutment 23. The blade is thereafter held in the handle against accidental rocking.

Y Copies of this patentimay ney obtatnefor If it is desired to remove the blade from its service position, as shown in Figs,y 1 and 2, the blade is forced in the direction indicated by the arrow in Fig. 2 while the handle is held immovable. The pressure thus `applied forces the end 17' backward, the

of the bladeis depressed in the manner indicated. Thus by forcingthevblade backward in the direction shown by the arrow in Fig.`2, no furtheriaction is required to'free -theblade from engagement with'l the pinzl and the handle of whichl the said pin forms a structural part. f

01am; Y A tool comprising, a handlev having` paral- Y lel sides spaced apart for-forming a blade;

holding recess; `an engaging member disposedin said-recess adjacent the iforward end thereof; a removable bladeV having a wedge-shaped shank, said shank having n:formed at one edge` thereof'a holding nick i for engaging said member, the other edge of said shankifbeiI-ig provided with an abutment for rocking said blade out of engagement with said member; and means mount- ,edinfsai'd handle for holding said shank in engagement: withV said member, saidv means embodying a spring adapted to engage the finclinededge of said shank'and to'yield to permit the introduction ofy said shank be- Atween said member and said spring andthe withdrawal of said shank from engagement with saida member, said springengaging said abutment to form a Vmovableralorum whereyon said-blade may 'rock for removing said Y mick: from :said member.

j WALLACE An. BRowN-Q ve-` cents vetmhfzby addressing-the Commissioner: of `Patents. WashingtonfILsCP y Y

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3900950 *Mar 18, 1974Aug 26, 1975Collins Walter WKnife with removable blade
US4391043 *Oct 26, 1981Jul 5, 1983Howard SizemoreKnife with removable blades
US5711194 *May 26, 1995Jan 27, 1998Anderson; WayneFolding knife and interchangeable bit screwdriver
US7174590Mar 18, 2004Feb 13, 2007Philip J QuenziHandheld multi-tool
US7360267Dec 22, 2006Apr 22, 2008Philip J QuenziHandheld multi-tool
US7647704 *Dec 30, 2005Jan 19, 2010Petersen Thomas DHandle with removable disposable surgical blade
WO1999067060A1 *Jun 23, 1999Dec 29, 1999Swiss Army Brands IncMultiple purpose automobile tool
U.S. Classification7/118, 30/152, 30/337, 7/165
International ClassificationB26B11/00
Cooperative ClassificationB26B11/006
European ClassificationB26B11/00D