US857433A - Type-metal melting-pot. - Google Patents

Description

No. 857.433. I f PATENTED JUNE18,1907. H. F. BEOHMAN, TYPE METAL MELTING-VPOT.

APiLIOATION FILED AUG. 22. 1906.

2 SHEETS-BREE! 1.

No. 857,433. I PATEN'TED JUNE 18,"1907. H. F. BEGHMANWJ TYPE MBTALMELTING POT.

APPLIUATION FILED AUG. 22} 1906.

Snmutom v of Battle Creek, in the caused by UNIT D STATES PATENT OFFICE.

HENRY F. BECHMAN, F BATTLE CREEK, MICHIGAN, ASSIGNOR ro nUrLEX PR rm uriep,

PRES$ MPANEZ RATION OF MICHIGAN.

U1 BATTLE CREEK, MICHIGAN, A CORPO TYPE-METAL resume-P01.

Specification of Letters Patent.-

Patented June 18, 1907.

Application filed August 22,1986. Serial No. 331,604.

To (155 whomlz't m/cty concerm- Be it known that I, HENRY F. BEOHMAN, county of Calhoun and State of Michigan, have invented certain new and useful Improvements in Type-Metal lvIeltmg-Pots; and I hereby declare that the following is a full, clear, and exact description thereof, reference being had to the ac-,

cpmpanying drawings, which form part of '1 this specification.

- This invention is an improvement in typefounders melting pots such as are used in 2 'ing stereotype plates, and in type-foundwherein a large reservoir of molten metal aintained during the ordinary operations tnc casting machine and is pumped from c pot as needed during the casting opera- 4 amount of metal and in order that the .p may operate successfully the metal must be maintained at an' approximately constant level in the pot s0 as'to keep the pump sufliciently submerged, and it sometimes happens that toward the end ofthe 5 casting operations the stock of fresh metal is exhausted and the level of the metal in the pot drops below the desired point and a great deal of annoyance and sometimes loss, is the delay required in obtaining a further su ply of metal sufficient to enable the metal in the pot to be rep enished so that the pump can operate. At the same time it is desirable'at. the end of the tion tohave as little metal as possible left in the pot, so that itcan be subsequently re melted with greater rapidity thanif a large amount is left therein.

The object of the present inventionisfto enable the founder to continue the casting operations until the amount of metal in the pot is reduced far beyond What it is possible to do with the apparatus as ordinarily conchanical device-cause the metal in the potto rise to the desired level in the pump and keep 1t up to the necessary level until the metal is practically all exhausted.

To. this end the invention resides, in short, providing means for raising the molten s. Customer-flythese pots contain acasting 'operametal in the pot, so that as its quantity lessens the operator can gradually introduce into the molten metal Wlll be caused to rise to a would naturally stand.

The invention will be fully understood.

from the following description of the appara tus illustrated in the following drawings, which show several modifications of'devices adapted to accomplish the desired end.

In the d'rawings-Figure 1 is a part elevation and part sectional view of a melting 'pot provided with my displacing device; Fig. is a top-plan view thereof; Fig. 3 is a sectional view of a slight modification thereof.

The metal pot 1 maybe of ordinary construction, and is placed over a furnace 2, such as is commonly employedfor this purpose,-'and is'provided with a metal pump 3, of usual construction, provided with a discharge outlet 3 by which the molten metal can be delivered to the'point of utilization. The construction of these parts of-the apparatus is well-known and needs no particular detailed explanation.

The molten metal in the pot 1 should be keptat such level, substantially as shown,

pot a displacing body, by which the v that it will completely fillthe pump 3, which i should be practically kept submerged in the casting operations until fresh metal could be obtained,-because after the metal drops below a certain point in the pump the appa ratus becomes ineffective. At such times my invention becomes useful, and it consists in the employment of a displacer used to raiseand maintain the molten metal at the proper level in the (pump when the pot is nearly exhausted, an no fresh 1;: metal 18 added.

As shown. in Figs. 1 and 2, the displacor comprises a body 4, which is adapted to be gradually lowered into the pot 1, and of is provided with an arm 4- which is ful crumed at 4: on the edge of the body, so that by oscillating the outer end of saidarm the displacer can be raised or lowered in the pot. The outer end of the arm 4 is engaged by a screw 5, which passes through a nut 4 swiv eled on arm 4* and pivotally engaged with a retainer 2* on the casing on which the pot is supported. By rotating the screw 5 it will be obvious that the arm 4* can be moved so as to raise or lower the displacer 4 at will. Normally the displacer 4 will be raised above the level of the fluid, but When the fresh supply of metal is exhausted and it is still desired to continue casting operations, the

. founder turns screw 5 so as'to lower thedisplacer 4 into the molten metal and raise the atter to the proper height, thus he can continue the casting operations until the displaceris com letely lowered, by which time practically al the metal in the potwill have een used; which procedure would have been absolutely impossible in the ordinary constructions of melting pots and pumps.

As shown in. Fig. 3, the displacer 6 is attached to the lower end of a screw 6*, which? passes through a threaded boss 6 supported on a bracket or arch 6 attached to the pot 1 or frame 2, which is otherwise constructed as in Fig. 2. By rotating screw 6 by its hand wheel 6, the displacer 6 can be raised or loweredinto the pot, as desired, with the game effect as in the construction shown in Having described my invention what I claim as new and desire to secure by Letters Patent is: 1. In a type metal melting pot, the combination of the pot, a metal pump, a body adapted to be lowered into the pot to displace the metal therein and raise its level in connections between said screw and the body and the pot, whereby said body may be positively moved in or out of the pot and secured in any adjusted position, substantially as set forth.

2. In combination with a furnace, a melt ing pot therein, a pum therein for forcing metal therefrom, a disp acer, -a hinged lever supporting said displacer, and a rotatable screw pivotally connected to the outer end of said lever and to a fixed point, and adapted to regulate the position of the displacer in the 0t and mainta n the molten metal at the esired level, substantially as described.

In testimony that I claim the foregoing as my own, I afiix my signature in presence of two Witnesses.

HENRY F. BEC HMAN.

In presence of- F. W. DUNNING, WM. JAMEs MOLYNEUX.

the pot and pump, a rotatable screw, and

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