US28277A - Improvement in molding shot and shells - Google Patents

Description

To @ZZ whom. z't may concern:

` for adjusting the pattern, of a iuold-board with means the two ilasks,when brought together,

'"center ofthe lower flask will be perfect and I UNITED STATES PATENT ,OFFICE DAVID HUESTIS, OF GOLD SPRING, NEWT- YORK.

IMPROVEMENT IN MVOLDING SHOT AND SHELLS,

Specification forming part of' Letters Patent No. 28,277,1latcd May 15, 1860.

Beit known that I, DAVID HUEsTIs, of Gold Spring, in the county of Putnam and State of New York, have invented certa-in new and useful Improvement-s in Molding Shot and Shell, and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this speciiication, inwhich- Figure l represents a vertical central sec- 'tion of my asks when ready to receive the metal. Fig. 2 is a similar section ofthe upper one ot' the semiilasks with the pattern and mold-board arranged according to my inveir tion. Fig. 3 represents avertieal central section of the lower flaslushowing the manner in which I adjust the core. Fig. et is an inverted plan of the gage used for adjusting the core.

Similar letters of reference in the several iigures indicate corresponding parts.

This invention consists in the employment,

a central aperture to receive a circular projection on the under side of the pattern, and with a circular flange on one and a rim on the other side to fit on one side over ariinturned to the end of 011e of the se1ni-iiasks,` and on the other into a flange projecting from the end of the other semi-flask, said rini and flange on the. sen1i-tlasks being at the same time so arranged that they serve as guides for the ilasks when the saine are connected; and my' invention consists, also, in combining with theilanged cud nl' the lower semi-flask a cross-shaped gage with a halt-circular recess for the purpose of adjusting the core.

'To enable those skilled in the art to make and use in): inventiony l will proceed to describe its Construction and'operatiou with reference to the drawings. 4

A A are two semi-flasks constructed of castirou or brass, or any other suitable material. One end of the flask A is turned in to forni a rim, u, to fit into a ilange, c, whieh projects from the'end of the other ilask,A. By these will have a common center, so that a pattern one half of which has been molded in the ceuter ot the upper and the other half in the without' fault when the two flasks are brought together.

be precisely onehalfof the shot or shell to be produced, and it is providedwith a circular,

`the pattern is adjusted in the mo1d-board on one side or ony the other, and the mold-board is now placed under the semi-flask, as shown in Fig. 2, the pattern cannot help to be perfectly in the center, so that when the mold is finished the two halves in each of the `semiiasks fit together as it' it wereone piece, and Y there is no danger that one half will be on one side and the other on' the other side, whereby faulty and useless castings are produced. The pattern is furnished with a pin, -e,-project.ing from its center on the curved side of the same, and long enough to reach to the top of the semi-fiasks. This piu serves to form the pouring-tube on one side, and on the other side it leaves 'a cavity in the sand, which receives the core-pin f, (see Fig. 3,) said core-pin being firmly attached to the core F. Thelower end of the core-piu is secured in the bottom board, G, by means of a wedge, or inv any other convenient manner, and the core itself is adjusted in the mold` by means of ya gage, H. This gage differs from the gage which is commonly used for the same `purpose in two essential points. The common gage consists of a plain piece of board or sheet met-al with a half-cir cular recess in the center, and arranged to fit into the ends of the flasks. It is obvious that by this arrangement. no correct adjustment of the core can be effected, and I have therefore y. added another piece ruiming crosswise with y the usual gage, and giving to the whole the form of a cross with a half-circular recess in the center; and instead of guiding my gage simply by the edge of the flask I have provided' the same with notches h. on its edges, so as to fit in and on the flange a', giving to the same a double guide-one in an up and down and the other in a lateral direction. By these means the shot and shell can be cast with the outside perfectly smooth, and so as to form a correct globe, and with the, shells the core is so adjusted that a uniform thie1 ess of meta The pattern Bin my molding process must` 2. The combination, with the hanged ena of the semi-HackA A', of a cross-shaped gage,

H, with notches h, constructed and operating substantially in thcnmnnex.' and for the pur pose specified. v

` fn. HUs'vlIs.

Witnesses:

WILLIAM THoMPsoN, M. M. LIVINGSTON.

Images