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Publication numberUS1041451 A
Publication typeGrant
Publication dateOct 15, 1912
Filing dateFeb 28, 1910
Priority dateFeb 28, 1910
Publication numberUS 1041451 A, US 1041451A, US-A-1041451, US1041451 A, US1041451A
InventorsThomas J Fegley, George O Leopold
Original AssigneeNorth Bros M F G Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Means for attaching blades of tools to handles.
US 1041451 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)



Patented Oct. 15, 1912.


Q9 w- Jim Learner. I V

struct a screw driver that 'rnomas J. .FEGLEY A D (moses ASSIGNOBS 'ro NORTH BROS.- conrona'rxon or PENNSYLVANIA.

0. LEoroL-D, or. rnrnannnrnm, P N SYLVANIA, MFG 00., or PHILADELPHIA, PENNSYLVANIA, a


Specification or Letters Patent.

Patented oer. 15.11am.

Application area February 25, 1910.. Serial No. 546,312.

To all whom z'tmay concern Be it known'that we, THOMAS J. FEGLEY and seem 0. United States, residing in Philadelphia, Pennsylvania, have invented certain Improve'ments in Means for Attaching Blades of Tools to' Handles, of which the following is a specification.

The object of our invention is to so-conthe shank of the tool will be rigidly secured to the handle. This. object we attain in-the following manner, reference being had to the accompanying drawings, in wh ich,-

Figural, is a side view of a screw driyer partly in section, illustrating our invention;

ig. 2, is a transverse sectional view on the line '-2-2 Fig. 1; Fig. 3,is a transverse sectional-view on the line 3-3 Fig. 1;-Fig. 4, is a transverse sectional view on the line fr-4: F ig.. 1; Fig. 5, isan enlarged view of a part of Fig. '1; Fig.6, is a detached perno I a transverse-slot as shown, the base of this s ective view of the blade of the screw river; Fig. 7, is a detached perspective view of the'plug which carries the blade, and-Fig; 8, is a perspectiveview showing the shank, of the blade mounted in the A is the blade of the screw driver having notched portion a atone end; The surface a of this notched portion is beveled, as shown in the enlarged view Fig. 5, so as to fit tightly against the beveled portion 1) of the plug B. This plug is shaped as clearly shown in Fig. 7 and has'an enlarged head I) which formsfpart of the fer'ruleof the tool. The shank o .the blade A is recessed at. a

and the metal of the plug is driven into the recessed portion as illustrated at c Fig. 5, locking the blade permanently to the plug. The blade is first driven tightly into the plug, so that the beveled surfaces a and b hold theme. parts firmly together, and then the metal of the plug is forced into the recess (1 Thus the shank is prevented from .turning in the plug, owing to the contact of the two flat surfaces a and b and it cannot move longitudinally owing to the metal of the-plu being forced into the recess, as

shown. T e plug is preferably made with LnoroLo, citizens of the slot forming the beveled portion 12'', as shown. On the plug'isa-series of longitudinal ribs 0, and these ribs are formed in the rescut instance by squeezing the .metal 0 the plug between two dies-which are less diameter than the diameter of the plug, causing the metal to be cut and forced into' the position shown in Fig. 2. These ribs may extend the full length of the plug or may be the purpose is to prevent the plug from turning in the handle.

D is the handle having a cavity it into which the plug is driven; the ribs forming channels in the walls of the cavity as the plug is driven, so that after the plug is once in position it cannot turn in the handle.

The handle is preferably provided with a ferrule d which is forced on to theend of i the handle in the above manner.

By the above construction the plug is permanently secured to the blade by indenting the plug back of the head and when the plug is driven into the handle, the 'ribsof the plug cut their way into the body of the handle; preventing the handle from turning on the plug. The handle extends over the depressed portion c'of the plug, making a neat and substantial screw driver. the invention is usedas a chisel or a gouge,

the head of the plug takes the thrust of the handle, while the notched end of the blade takes the thrust of the plug.

It will be understood that while we have shown the blade in the form of a screw driver, the invention may be used in securing blades of other tools to handles, without departing from theessential'features of the invention.

\Ve claim 1-" j The combination of a blade having a. notched and tapered end and having a recess some distance from the notch; a handle having a cavity therein and provided with a ferrule; a plug having ahead at the outer end and having longitudinal ribs projecting from its body and having a seat formed by slotting the plug transversely; said seat being beveled for the reception of the beveled end of the blade; the portion arranged at intervals, as desired;


of the plug directly back of the head extendour names to this specification, in the pres .ing into the recess in'the blade", permaenee of two subscribing witnesses.'

nently securing the handle to the plug; the THOMAS J.

transverse slot and the depressed portion of I the plug being covered by the handle and GEORGE EQ L the plug being prex ented from turning in Witnesses: the handle by the longltudinal ribs thereon. WALTER OHIsM, In testimony whereof, we have signed WM. A. BARR.

, Gopiesoi this patent may be obtained for five cents each, by addressing the Gommissioner of Patents,

Washington, D. G.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2684250 *Sep 2, 1953Jul 20, 1954Hyde Mfg CompanyRemovable blade linoleum knife
U.S. Classification279/81, 279/102
Cooperative ClassificationB23B31/1071