US295547A

US295547A - Die for forging hammers

Info

Publication number: US295547A
Authority: US
Publication date: 1884-03-25
Anticipated expiration: 1901-03-25

Description

(ModeL) 2 Sheets-Sheet 1..

H. HAMMOND. 4

DIE FOR FORGING HAMMEES.

No; 295.547. Patent ed Mai. 25, 1884.

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N. PETERS. Pholwlikhngmpher. Wash 5 NrTnn STATES PAJTENT Truce.

HENRY HAMMOND, OF HARTFORD, CONNECTICUT.

DIE FOR FORGING HAMMERS.

SPECIFICATION forming part of Letters Patent No. 295,547, dated March 25, 1884.

Application filed Juno 13, 1881. Renewed October 1, 1883. (Model) To all whom, it may concern:

Be it known that I, HENRY HAMMOND, of Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Dies for Forging Hammers; and I do hereby declare that the following is a full, clear, and exact description thereof, whereby a person skilled in the art can make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

Like letters in the figures indicate the same parts.

My improvements relate'to dies for forging hammers, and more especially to those which are used in finishing and giving to the hammer its final shape and form.

The object of. my invention is to finish the hammer without leaving upon it a web where the parts of the die join, and which in the customary form of finishing-dies has to be sheared or ground off, so that the hammer as it comes from the dies is smooth and perfect. This is accomplished by the peculiar form and construction of my improved dies.

In the accompanying drawings,ontwo sheets, illustrating my invention, Figure l is a side view of what I shall call die No. 1, with the two parts slightly separated, so as to show the construction. Fig. 2 is a vertical section through the middle of the same die. Fig. 3 is a top view of the lower part of the same die. Fig. 4 is a vertical section of another die, which I shall call die No. 2. Fig.5 is atop view of the lower part of die No. 2, or a bottom view of the top part, both being alike, or rather symmetrical. Fig. 6 is a perspective view of the finished hammer as it leaves the dies, having the sprue attached, which is cut off when it becomes unnecessary for use in handling the hammer.

The two dies, or, as they are sometimes called, two pair of dies, are used conjointly, the hammer being placed alternately in them and pressed or struck in the customary manner. A and B are theupper and lower parts of die No. 1. The peculiar features of this die are that the division-line upon which the parts separate does not follow the middle of the hamat the eye of the hammer the division is at the 'top, as shown in Figs. 1 and 2, and alsothat the joint between the two parts toward the ends of the hammer are freed, so as to allow the metal to spread somewhat without forming in the hammer by the previous processes through which it has passed. This mandrel, in being forced into the hole in the hammer, slightly enlarges it and presses the metal against the sides of the lower part of the die at B, which serves as a buttress to resist the spreading in that direction, so that the extra metal is forced into the ends of the hammer. The two parts coming together, therefore, crowds the metal into the sprue and into the freed portions 0.

E and F are the upper and lower parts of die No. 2. In this die the hammer, it will be observed, lies in a position at right angles to that of die No. lthat is, it is turned one-quarter way round, so that the division-line comes upon another part of the hammer. The peculiarity of this die is that it has no mandrel for the hole, and that ithas a freed portion, G, extending all around the joint wherethe two parts of the die unite, this joint being straight,

as is now commonly seenin such dies. This die acts upon that part of the hammer which comes oppositethe freedparts ofthefirst die, and

two dies alternately and the operationrepeated until the hammer is forged into exact shape without leaving upon it any swell or web where the parts of the dies join.

By means of my invention a great amount of labor in removing the ordinary web and fin- I buttresses B upon the other part, both extendishing is avoided.

What I claim as my invention is 1. The finishing-die A B, having the joint between the upper and lower parts of the form shown and described, whereby the line of j unct'ion passes along the middle portion of the ends of the hammer, and thence curves outward to the top of the eye, substantially as described.

2. In afinishing-die for hammers, of the form shown and described, the combination of the mandrel D upon one part of the die with the ing the full' length of the eye, substantially as described.

3. The die A B, of the form shown and described, having the freed portions 0 jointly with the die E F, of the form shown and de scribed, having the freed portions G at right angles to those at O, substantially as set forth.

HENRY HAMMOND. Witnesses:

THEO. G. ELLIs, EDWIN F. DIMOOK.