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Publication numberUS1037289 A
Publication typeGrant
Publication dateSep 3, 1912
Filing dateSep 30, 1911
Priority dateSep 30, 1911
Publication numberUS 1037289 A, US 1037289A, US-A-1037289, US1037289 A, US1037289A
InventorsJohn W Miller
Original AssigneeJohn W Miller
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1037289 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

. IIIIIIIIIIIIIIIIII PT. 111111 1. 1,037,289. Patented Sept. 3,1912.

nniTnn sTATEs PATENT orricn. x



To all whom t may concern.

Be it known that l, JOI-IN lV. MILLER, a Citizen of the United States, residing at Bernharts post-oilice, in the county of Berksl and State of Pennsylvania, havew invented a new and useful Hammer, of which the following is a specification.

One object of the present invention is to provide a hammer head which may be fash-v scribed and claimed, it being understood that changes in the precise embodiment of invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

In the drawings,-Figure 1 shows theinvention in top plan; Fig. 2 is a transverse section upon the line A-B of Fig. 1; Fig. 3 is a transverse section on the line C-D of Fig. 1; Fig. it is a longitudinal section upon the line E--F of Fig. 1; Fig. 5 is a transverse section upon the line G-H of Fig. et, the handle of the hammer being shown as an added detail; and Fig. 6 is a detail enlarged from Fig. 1.

The hammer head herein disclosed is fashioned from hexagonal material, and comprises an intermediate portion 1, retaining the hexagonal contour of the material from which the head is fashioned. One end portion 2 of the head is circular in transverse section, as indicated at 3, the outer end face of the portion 2 being convexed slightly, if desired, as shown at 4;. The opposite end 5 of the head is circular in transverse section, as shown at 6, and is rounded longitudinally, as shown at 7, so as to fashion a ball peen.

From the foregoing it will be seen that a section of hexagonal bar steel or like material may be placed in a lathe, the portions 2 and 5 being readily turned into the de sired form. The hammer head, therefore, as an entity, may be formed without forging or otherwise manipulating the original Specification of Letters Patent. K Patented Sept. 3, 1912. Application filed September 30, 1911. Serial No. 652,045.

material, saving for the simple machine operation necessary to fashion the circular end portions 2 and s y s The invention further aims to provide a novel form of eye for a tool head, which eye will operate effectively, to retain the handle within the tool head.

'lhe eye is fashioned in the hexagonal, intermediate portion 1 of the head, and consisls of end portions S which, as clearly n shown, are conical or tapered. The end por-- tions 8 are united by a central portion 9 which is cylindrical throughout its entire length. Thatl extremity of the cylindrical portion 9 of the eye, which is adjacent the wider extremities of the end portions 8 of the eye, is enlarged in diameter, as shown at 10V The handle 11 is driven into the eye, through the smaller extremities of the end portions 8 of the eye. A wedge 12 is driven into the end face of the handle 11, and this wedge 12 will cause rthe handle to expand, and fillthe wider extremities of the end portions 8 of the eye, thereby, obviously, preventing a withdrawal of the handle 11 from the head. The insertion of the wedge .portions S, in effecting this result.

Referring particularly to Fig. 11, it will be seen that where the walls of the cylindrical portion 9 of the eye are intersected by the conical end portions 8, inwardly projecting edges 2O are formed, which edges converge toward the wider extremities of the conical end portions 8. These edges 20 engage the handle and tend to hold the head upon the handle against movement toward the free end of the handle. Recalling that when the wedge 12 is inserted-into the handle, the handle is held against movement in a direction away from the free end of the handle, it will be seen that the head of the hammer is held upon the handle, against movement in either direction. The shape of the eye is such that an ordinary oval handle may be mounted in the head, no specific form of handle being required. Moreover, owing` to the fact that the cylindrical portion 9 is enlarged abruptly, as shown at 10, a seat is formed, into lwhich the handle is expanded by the Wedge, With positive locking engagenient.

Having thus described the invention, what is claimed is:

A tool head having an eye, the end portions of which are conical, said end portions being connected by a central, cylindrical portion, t-hat extremity of the cylindrical portion which is adjacent the Wide-r extremities of the end portions, being enlarged abruptly in diameter to form a seat into which the handle is expanded by the Wedge,

With positive locking engagement, the end and central portions at their lines of inter section defining inwardly projecting edges which converge toward the Wider extremities of the end portions.

In testimony that I claim the foregoing as my own, I have hereto affixed my Signature in the presence of two Witnesses.



Copies of this patentmay be obtained for ve rcents each, by addressing the Commissioner of Patents. Waghington, I). C.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4015908 *Mar 18, 1976Apr 5, 1977Amsted Industries IncorporatedMultiple-piece crankshaft
U.S. Classification403/248, 403/277
Cooperative ClassificationB25G3/28