US431315A

US431315A - Bullet-molding dipper

Info

Publication number: US431315A
Authority: US
Publication date: 1890-07-01
Anticipated expiration: 1907-07-01

Description

(No Model.)

J H. BARLOW.

BULLET MOLDING DIPPER.

No. 431,315. Patented July 1,1890.

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UNITED STATES PATENT Fries.

JOHN II. BARLOIV, OF NEW HAVEN, CONNECTICUT.

BULLET-MOLDING DIPPER.

SPECIFICATION forming part of Letters Patent No. 431,315, dated July 1, 1890.

Application filed April 18 1890. Serial No. 348,470. (No model.) I

To all whom, it nuty concern.-

Be it known that 1, JOHN H. HARLOW, a citizen of the United States, residing at New Haven, in the county of New Haven and State of Connecticut, have invented certain new and useful Improvements in Bullet-Molding Dippers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to certain new and useful improvements in dippers for use in molding bullets and has for its object to provide a device of this description, whereby the molten metal may be manipulated without spilling, and whereby the lead as it enters the mold may be free from dross.

My invention furthermore relates to a method of casting bullets, for which the dipper herein shown and described is particularly adapted; and with these ends in View my invention consists in the details of construction and in the method hereinafter to be fully explained, and then recited in the claims.

I11 order that those skilled in the art to which my invention appertains may fully understand the construction and method of operation thereof, I will describe the same in detail, reference being had to the accompanying drawings, which form a part of this specification, and in which- Figure 1 is a side elevation of my improved dipper; Fig. 2, a central vertical longitudinal section; Fig. 3, an elevation of the dipper, showing the same in conjunction with a mold preparatory to casting; Fig. 4, an elevation showing the position of the parts at the moment of casting.

Like numerals and letters denote the same partsin all the figures.

The body portion 1 of my improved dipper is substantially ovoid-in form but the upper rear quarter thereof is cut away, as plainly appears at Figs. 1 and 2, for the purpose of dipping up molten metal from a pot or crucible. A spout or nozzle 2 projects upward and outward from the forward portionof the dipper, the opening at the rear of said nozzle being below the line a a, which represents the level at which the metal stands when the dipper is filled to its utmost capacity, the upper end of said nozzle being entirely above said line. relative to the filling-line is to permit the dipper to be filled without the liability of any metal accidentally spilling through the nozzle, and also to prevent any dross from entering the nozzle, said dross being detained by the shoulder l) at the base thereof. It has also another purpose, presently to be set forth in the description of the method of using the dipper in connection with a mold. At 3 the extremity of thenozzle is sharply chamfered to fit the chamfered orifice in the ingate-plate 4 on an ordinary mold 5, which is shown in section in Figs. 3 and 4. A projecting hub (3 on the dipper is adapted to receive any suitable handle 7. I

While the dipper herein described maybe used for pouring molten metal by simply tipping the dipper and permitting its contents to flow out th rough the nozzle, I have particularly designed it for use in connection with a mold in another way. In carrying out my method the dipper is filled from a pot or crucible, so that the metal stands at about the level of the line a, a, when the dipper will contain more than sufficient'lead for one casting, and the outer end of the nozzle will be above the line. The chamfered ingate of the mold is then closely engaged with ,the chamfered nozzle, the clipperbeing still held with the nozzle above the level of its contents. \Vhen the nozzle and mold have been thus brought into close contact, they are turned quickly to the relative positions shown at Fig. 4., when the mold will be suddenly filled by an influx of metal driven by the pressure of the body of said metal in the dipper, whereby the air is suddenly expelled from the mold and a casting obtained on much greater density than can be secured by pouring. If care be taken to fill the dipper every time alike, each bullet will be cast under the same pressure, thereby insuring great regularity in weight and freedom from air-holes. Furthermore, the rush of metal from the dipper into the mold is much more rapid than a filling accomplished by pouring, and therefore all portions of the lead cool alike, besides which the close con- The purpose of thus placing the nozzle v ion tact between the nozzle and the ingate prevents the metal from leaking at the sides of the ingate and the waste thereby occasioned. As soon as the mold has been filled the positions of the mold and dipper are again reversed, whereby the surplus metal is returned into the body of the dipper, whence it may be thrown into the melting-pot and a fresh quantity taken for the next operation.

NVhen the mold and dipper are in the position shown at Fig. 4 it will be observed that the mold is filled with lead from the'very bottom of the supply in the dipper, and as. the latter holds more than is required for a single casting no dross will enter the mold, as is the case where metal is poured from a dipper or ladle in the ordinary way, and this is true to a greater or less extent, Whether the ladle be open or provided with a hooded spout.

I am aware that ladles having spouts and adapted for use in pouring metal or other substance have been heretofore used, as is evidenced by Letters Patent to Baker, No. 117,723, Butterfield, No. 209,223, and Babcock, No. 43,151, and I do not wish to be understood as laying claim to anything shown and described in said Letters Patent.

I claim- 1. The ovoid bullet-molding dipper herein described, the same being cut away at its up per rear portion, said dipper having also the upwardly and outwardly projecting spout, whose rear end is entirely below the fillingline of the dipper and whose outer end is entirely above said line, the end of said spout being chainfered, substantially as described.

The ovoid bullet-molding dipper herein described, the same consisting of the body 1, cut away at its upper rear side, the upwardly and outwardly projecting nozzle having its LOUIS A. BABCOOK, GEO. EDMoNDsoN.