US958595A - Hammer for tinsmiths, &c. - Google Patents

Description

J. 0'. GHARPENTIER.

HAMMER FOR TINSMITHS, 8w.

APPLICATION FILED DEC. 2

' Patented May 17, 1910.

jnvenj tor' UNITED STATES PATENT OFFTCE.

JOSEPH O. CHARPENTIER, 0F CONCORD, NEW HAMPSHIRE.

HAMMER FOR TINSMITHS, 860.

To all whom it may concern:

Be it known that I, JOSEPH O. CHAR- IENTIER, of Concord, in the county of Merrimack and State of New Hampshire, have invented certain new and useful Improvements in Hammers for Tinsmiths, &c., of which the following is a specification.

This invention relates chiefly to hammers used in forming seams in connecting circular sheet metal bodies, such as the sections of a sheet metal pipe elbow and the like. A hammer of this character is usually provided with a single peen having a narrow elongated face formed to hammer down a flange or lip forming a part of a seam con-- necting two sheet metal parts. Heretofore a hammer of this class has been provided with only one of such peens, so that a workman in hammering down a circular flange has to change the position of the handle relatively to the circle, and hold the handle at all times substantially radial to the center of the circle. The most efiective and convenient way to manipulate the hammer is to swing it directly forward from the operators body in striking the blow, but when the hammer has but a single peen, it becomes necessary for the operator at times to swing the hammer in a direction at right angles to a forward movement from the operators body, this requiring a twisting movement of the operators arm and impairing the accuracy of the blow.

The invention consists in a hammer having two peens projecting from opposite sides of the handle, each peen having a narrow elongated end face, the elongation of one of said faces being lengthwise of the handle, while the elongation of the other face is crosswise of the handle, the relative arrangement of the peens being such that the operator may apply a blow to diflerent parts of a circular flange or body by a movement of his arm forward from his body, and without a twisting or lateral movement of his arm.

Of the accompanying drawings, forming a part of this specification,Figure 1 represents a side elevation of a hammer embodying my invention. Fig. 2 represents an end elevation of the same. Fig. 3 represents a perspective view; and Fig. 4: represents a side view of a sheet metal elbow, the hammer being shown in dotted lines applied to two difierent parts of the elbow;

Specification of Letters Patent.

Application filed December 2, 1909.

Serial No. 531,008.

The same reference characters indicate the same parts in all the figures.

In the drawings,a represents the handle, and b the head of a hammer embodying my invention. The head is formed to project equally from opposite sides of the handle, and each of its arms is tapered and terminates in a narrow elongated end face or peen, one of which is elongated in a direction at right angles to the direction of elongation of the other, as shown most clearly in Fig. 3, where one of the peens is lettered Z) and the other 6 The peen b is elon-. gated in a direction substantially parallel with or lengthwise of the handle, while the peen b is elongated in a direction crosswise of the handle. The faces 7), b are preferably beveled, so that each forms an acute angled edge by its junction with one of the sides of the arm on which it is formed.

The operation of the described hammer is illustrated in Fig. 4, which represents a sheet metal elbow composed of tubular sections 0, each having flanges so formed that a flange on one section is adapted to overlap and be hammered down upon a flange upon the next section, thus forming a seam. The operator, who is supposed to be standing at the right of the elbow while hammering a portion of a flange on the side of the elbow nearest his body, uses the peen b WVhen the seaming operation has progressed around to one or the other of the sides of the elbow farther from the operators body, the operator reverses the hammer and brings the peen 6 into action. The operator is therefore enabled to hammer around somewhat more than one-quarter of a complete circle without materially changing the direction in which the hammer is swung, the operator being at all times enabled to swing forward from his body in striking the blow without a twisting movement of his arm, whether the hannner is acting on the portion of the flange nearest his body, or one of the side portions farther from his body.

The bevel or inclinations of the face or peen Z), as here shown, is adapted for use by a right handed operator. In a hammer intended for use by a left handed operator, the face or peen 6 should have an opposite bevel or inclination.

I claim:

A tinsmiths hammer comprising a han- Patented May 1'7, 1910.

dle and a head secured thereto and having a straight rear face, the front face being beveled from the handle to one edge to form an elongated peen extended transversely of the handle, the side faces of said head being both beveled from the handle to the other edge to form an elongated peen extending lengthwise of the handle, Wherebv the application of the hammer to the difierent parts of a circular flange or body is facilitated,

the edge of the transverse peen being beveled from the front to the rear, the" edge of the other peen being also beveled away from the face intended to be adjacent the Work.

In testimony whereof I have affixed my 15 signature, in presence of tWo Witnesses.

JOSEPH O. OHARPENTIER. lVitnesses:

C. F. BROWN, P. W. Pnzzn'rrr.

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