US1764690A - Tool handle - Google Patents

Description

June' 17, 1930. E. M. PFAusgR -TooL HANbLE- EI M Uf/sluier Patented June 17, 1930 UNIT iff;

EDWARD M. PFAU'SER, 0F MILWAUKEE, WISCONSIN, ASSIG-NOR T0 BLACKHAWK CO., OF MILWAUKEE, WISCONSIN MFG.

TOOL HANDLE Application filed. April 16,

This invention pertains to improvements in tool handles, and is applicable to such tools as wrenches, bits, and the like, in which the shank of the tool is provided with a rotatable end handle, by means of which the tool is held, and pressure applied thereto.

The invention has primarily for its object the provision of a simple and inexpensive `handle of the foregoing character Vin which novel means are provided `for reducing wear at the points of friction, to a minimum.

Incidental to the foregoing, a more specific object is to provide a tool handle with hardened bearings at the points of engagement with the tool shank, so assembled within the handle as to reduce manufacturing costs to a minimum, and provide a snug rigid engagement between. the handle and 2o tool.

With the above and other objects in view, which will appear as the description proceeds, the invention resides in the novel construction, combination and arrangement of parts substantially as hereinafter described and more particularly definedby the appended claims, it being understood that such changes in the precise embodiment of the herein disclosed invention may Vbe made as 3o come within the scope of the' claims.

In the accompanying drawing, is illustrated one complete example of the physical embodiment of the present invention constructed according to the best mode so far` devised for the practical application of the principles thereof. Y

In the drawing, Figure 1 is a transverse section through a tool handle constructed in accordance with the present invention;

Figure 2 yis a detail section taken on the line 2-2 of Figure 1.

Referring now more particularly to the accompanying drawing, the numeral 1 designates the shank of a tool, such as a Wrench, 45 bit, or the like, and adjacent its upper end,

the same is provided with a restricted portion, which results in the annular shoulders 2. Rotatably mounted on the upper end of the shank 1, is a handle 3 comprising a hol @c low shell formed of upper and lower sections ino' withthe end of the shank, and in the oppo- 1927s. serial No. 355,47a.

4i and 5, respectively, which sections are preferably formed of sheet metal stampings,` of material sufliciently soft to permit proper working.` j

Secured within the handle between the upper and lower'section's, is a hardened bear ing plate 6 provided with a recess 7 for the Vreception of the upper end of the shank 1.

To further eliminate friction, and provide an end thrust bearing for the handle, the recess 7 is provided with a `rounded projection 8 engaging the end of the shank.` The upper and lower sections 4 and 5, aswell as the bearing plate G, Vare secured together by crimping over the edge of the material of the upper section, as clearly shown in Figure 1. l

Y From the foregoing, it will be'readily seen that the hardened plate, which receives the upper end of thetool shank 1, serves both as a lateral and'end thrust bearg, and inasmuch as the greatest pressure is exerted upon the endof the tool shank, friction is reduced toa minimum through the rounded lprojection 8, and, the bearing plate, being constructed of hardened material, very little wear occurs.

vThe lower section 5 is provided with a restricted sleeve eXtension 9, which snugly rereceives a hardened split bushing 10 engaged in the restricted portion of the shank and abutting the shoulders 2 to prevent longitudinal 'movement on the shank.

The handle is secured to the bushing by crimping over the lower edge 11. Thus, in assembled position, the handle has free rotary movement on the shank and is held against longitudinal movement in vone direc` tion by engagement ofthe bearing nib 8 l9() site direction, by engagement of the split bushing with one of the shoulders 2; Obviously, it is essential that the bushing 2 be split in order tov assemble the same upon the restricted portion of the shank prior to assembling the handle on the bushing and crimping over the restricted sleeve extension to provide a permanent assembly.

From the foregoing description, taken in connection with the drawing, it will be obviloe ous that a comparatively simple, durable, and inexpensive structure has been provided, which results in a freely rotatable handle for the shank of a tool and reduces wear to a minimum, in that the parts of the handley for engaging the shank are provided with hardened bearing surfaces, thus permitting the outer shell, forming the handle, to be constructed of relatively soft fand inexpensive material, easily formed to the desired shape.

I claim:

l. A tool handle comprising a hollow shell for receiving the shank of a tool, said shell comprising upper and lower sections secured together b v crimping the material of one section over the other section, the lower section .being provided with a restricted sleeve extension, a hardened plate secured between said sections and provided with a recess for receiving the end of said shank, and a rounded extension in said recess to form an end bearing for said shank, and a split hardened bushing secured in said sleeve eXtension by crimping over the end of said sleeve, said split bushing engaging. an annular restricted portion in said shank to form a bearing for the handle and retain the same against longitudinal movement on the shank.

2. A tool handle including a shank having a restricted portion, shoulders at the ends of said restricted portion, a hardened plate having a central recess for receivingthe end of the shank, a rounded extension projecting into the recess to form an end bearing for said shank, a hollow shell enclosing the outer end of the shank comprising upper and lowersections, the lower section having an annular flange to support the edge of the hardened plate, the upper section having its outer edges crimped over the edge of the plate, and the4 flange on'the llower section to connect said section, the lower ksection being provided with a restricted sleeve eX- tension enclosing the restricted portion in the shank and a split hardened bushing in the restricted portion of the shank and enclosed by the restricted sleeve extension, said bushing being held in place by crimping over the end ofthe sleeve extension, said split portion engagingoneof the shoulders formed by the restricted portion in the shank to form a bearing for the handle and retain thepsame against longitudinal move- Y ment on the shank. v Y

In, testimony .that I claim the foregoing I have hereunto set my hand at Milwaukee,

in the county of Milwaukee and State of Wisconsin.

EDWARD M. PFAUSER.

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