US5371A

US5371A - campbell

Info

Publication number: US5371A
Authority: US
Publication date: 1847-11-20
Anticipated expiration: 1864-11-20

Description

G. W. CAMPBELL. CASTING BULLETS, am.

4 Patented Nov. 20, 1847.

UNITED STATES PATE T OFFICE.

GEO. W. CAMPBELL, OF BELLEVILLE,.NEW JERSEY.

IMPROVEMENT lN-THE MANUFACTURE OF BULLETS, 80o.

Specification forming part of Letters Patent N0. 5,37 I dated November 20, 1847.

Too. whom it may concern Be it known that I, G. W. CAMPBELL, of -B elleville, in the county of Essex and State of New Jersey, have invented new and useful improvements in constructing endless series of molds for casting bullets, buckles, and other articles in lead; and I do hereby declare that the following is a full, clear, and exact'description of the principle or character'which dis-- tinguishes them from all other things before known and of the manner of making, constructing, and using the same, reference being hadto the'aecompanying drawings, makingpart of this specification, in which- Figure 1 is a vertical section through .the.

center of the bullet-mold, and Fig. 2 a representation of a buckle-mold with a furnace connected.

The same letters indicate like parts in both,

let-molds the sections are cubical blocks of metal B, jointed together at their inner edges, k, soas to form an endless chain, as is clearly shown in Fig. 1. In the sides of each of these metal blocks, next to the succeeding ones, are recesses of a semi-spherical form, and the two being closed form aperfeet bullet-mold. This endless chain thus constructed is sustained by three cylinders or'polygonal prisms, E, placed equidistant in a triangular position, two of them being on the same level, by which it will be observed that that portion between the two upper cylinders has all its sections closed, so as to receive the molten lead from a spout in the furnace, where it is melted, as the endless chain passes .nnder it'with. a velocity justsuflider, over which they are carried by its revolution and opened, which tends to loosen the casting. It then closes, descending in a'straight line to the lower cylinder, making a turn around it short enough to open the mold with both faces downward sufficiently to drop out the bullet. Thence the empty sections ascend again to the upper level, ready to receive another casting. The usual sprue-hole is formed in the upper part of the mold, and a continuous trough may be inade along the outer face of the sections, it. required. By this arrangement it will. be perceived that each section will be alternately separated from those adjoining, and also from the casting, which by this means can be readily detached therefrom,

-which last operation can be aided, it"found struction of endless-chain molds may be made for castings of other descriptions, and'I intend to employ my improvement for various purposes for which such an arrangement is obviously applicable.

I wish it to be understood that I do not claim as my invention an endless chain of molds, as that has bet-ore been made; but

What do I clarm 'asmy invention, and desire to secure by Letters Patent, is-

An endless chain of sections or molds passing over horizontal prisms on cylinders,'substantially as above specified, for making bullets aud other castings, so that the sections of the molds shall be forced open for the dis charge of their contents by passing around Witnesses:

JoHN A. ARMOUR, JNo. (J. LLOYD.