US1675716A

US1675716A - losey

Info

Publication number: US1675716A
Authority: US
Publication date: 1928-07-03
Anticipated expiration: 1945-07-03

Description

July 3, 1928.

A. LO SEY APPARATUS FOR CASTING YIPE AND OTHER ANNULAR ARTICLES CENTRIFUGALLY Filed Dec. 30, 1925 3 Sheets-Sheet l A, LOSEY APPARATUS FOR CASTING PIPE AND OTHER ANNULAR ARTICLES CENTRIFUGALLY 'Filed Dec. 30, 925 :5 Sheets-Sheet 2 iii;

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July 3, 1928.

A. LOSEY APPARATUS FOR CASTING PIPE AND OTHER'ANNULAR ARTICLES CENTRIFUGALLY Filed Dec. 30, 1925 3 Sheets-Sheet 3 //7 vemor W/ fn e55:

Patented July 3, 1928.

UNITED STATES PATENT OFFICE.

.ETHUR LOSEY, OF BAY SHORE, NEW YORK, ASSIGNOB TO UNITED STATES CAST IRON PIPE & FOUNDRY COMPANY, OF BURLINGTON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

APPARATUS FOR CASTING PIPE AND OTHER ANNULAB ARTICLES CENTBIFUGALLY.

Application filed December 30, 1925. Serial No. 78,389.

My invention relates to centrifugal pipe molds of the general type of the De Lavaud molds. as shown, for instance, in Patent No. 1.329.295 of January 27, 1920. In this type of mold the metal is introduced into the rotating mold through a runner, the mold being retracted during the pouring so that the metal is delivered in, so to speak, a rope like coil to the walls of the rotating mold.

In this mode of casting pipe there is danger that the metal first delivered by the runner will be too cold so that it will not properly merge with the succeeding deliveries and hence the pipe casting may be defective.

The object of my invention is to provide the mold with a receptacle, separate from the pipe mold proper, into which the metal first delivered by the runner can be delivered until metal of proper temperature and fluidity flows from the runner after which the metal is allowed to flow into the mold proper in the ordinary manner and my invention consists of a mold provided with such a receptacle and in the features of construction of the receptacle.

My invention will be best understood as described in connection with the drawing in which it is illustrated and in which Figure 1 is a sectional elevation of a centrifugal pipe mold provided with my improvements shcu ing also in section the runner by wini metal is delivered to the mold. Figure :1 similar sectional elevation showing a is illustrated in Fig. 1.

Figure 3 i, a witional elevation of a centrifugal pipe mull adapted for casting bell ended pipes and provided with'my improvementsl a Figure 4 is a sectional elevation of a modified construction of pipe mold adapted for the casting of the pipe in a refractory lin-' ing of the mold and also improvements, and a igure 5 is an isometric drawing showing myinvention as applied to a construction in which two molds are simultaneously charged with molten metal, the use of which twin molds is made more feasible by equip- 5 ping them with my improvements.

A, Figs. 1 and 2, is a metallic mold of the ordinary type used in the centrifugal castprovided with my modification of the construction ing of De Lavaud pipes without bell ends, A indicating an annular end extension of the mold at the outer end of which extension' is formed an annular recess A and several notches indicated at A. B indicates the end of the runner through which the molten metal is introduced into the mold and which is shown in Figs. 1 and 3 as having its delivery spout in registry with the metal receptacle which constitutes the essential-feature of my invention. In the construction of Fig. 3 the body of the metal pipe mold is indicated at (1, its bell extension at ((11, and the final extension for the support of the metal reservoir is indicated at A. In the construction of Fig. 4 AA indicates the metal flask supporting the refractory lining AA, AA indicating the tubular extension from the flask corresponding in position and function with the extension A in the other modifications.

In the construction of Fig. 1 the metal receptacle for cold or dead metal is made up of a metal member C fitting in the extension A and having an inwardlv projecting wall C and a seat C in which is seated a member D, made up of refractory material forming, as shown, the end of the mold proper and a division wall between the receptacle for dead metal and the mold. The construc tion shown in Fig. 2 is similar to that shown in Fig. 1 except that the seat C for the refractory member D is here shown as formed in a separate mold part C, C. In the construction of Fig. '3 the general construction of the mold receptacle is similar to that of Fig. 1, modified slightly to better adapt it for the casting of'bell ended pipe, thev member D being provided with a rearward extension D forming a core for the bell end. The construction shown in Fig. 4 is essentially similar to that shown in F 1 with only such modification as adapts it foruse with the refractory lining AA. 5 G indicates the bed of the machine and H the casing in which two centrifugal molds are supported and which constitutes in the De Lavaud system a water jacket surrounding the molds. I, I, indicate ladels, by tipping which the metal is poured into the troughs J, J, connected with the runners, which feed the molds with molten metal.

In Fig.

' metal formed at the end of the mold. When the pouring first begins, and the operative does not begin to retract the metal until he sees that the metal running from the spout is of proper temperature and fluidity, thereupon the mold is retracted, leaving a body F of dead etal in the receptacle and charging the m ld proper with metal, indicated at F, which s of proper temperature and fluidity to make a good casting. The metal flowing into the receptacle at the end of the mold is chilled by contact with the metal member CC and when the casting is complete the split ring E is removed and the members CC and D, making up the receptacle. removed and replaced for another cast-- ing, and, to get rid of the waste metal, which has remained in the receptacle. The notches A facilitate the removal of the split ring and also are useful in case any metal gets into the groove A and enable it to be readily pried out. i

Where twin molds are used, as indicated in Fig. 5, my invention is especially useful, enabling a skilled operative to see that both spouts are running metal of proper fluidity and temperature before the direction of the twin molds is effected for the pouring of the metal.

Having now described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A centrifugal pipe mold having an annular receptacle for molten metal at its end separated from the mold proper by a removable annular ridge.

2. A centrifugal pipe mold having an annular receptacle for molten metal built u of removable sections secured to the end of the mold.

3. A pipe mold having the features of claim 2 in which the metal receptacle is built up of an annular ridge member of non heat conducting material separating the receptacle from the mold proper and a body and end member of metal.

4. A pipe mold having the features of claim 2, having a sleeve like extension of the mold in which the removable sections making up the metal receptacle are secured.

In testimony whereof, I have signed my name to this specification, this twenty-ninth day of December, 1925.

ARTHUR LOSEY.