US1102842A - Typographical casting-machine. - Google Patents

Description

W. M. WOOD.

TYPOGRAPHICAL CASTING MACHINE.

APPLICATION FILED JUNE 5, 19 13.

Lwz m o Patented July 7, 1914.

E. H I

5] MA)? Mioz WILLIAM MILNER WOOD, OF NEW YORK, Y., ASSIGNOR T0 MERGENTHALER LINOTYIPE COMPANY, A CORPORATIDN OF NEW YORK.

TYPOGRAPHICAL CASTING-MACHINE.

Specification of Letters latent.

Patented July Z, ilgllet.

Application filed June 5, 1913. Serial No. 771,786.

To all whom it may concern Be it known that I, WVILLIAM MILNER Wool), a citizen of th United States, rcsiding at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in 'lypographical Castin -Machines, of which the following is a specification, reference being had therein to the accompanying drawmg.

casting machines, such for instance as linotype machines of the general character disclosed in Letters Patent of the United States to 0. lslergenthaler, No. 436,532, wherein an assembled line of matrices is presented temporarily v to one side of a 'slotted mold, and molten metal is then forced into the mold from a pot by a suitable pump or plunger, all in the manner well known in the art. The solid type metal is deliyered to the pot and is melted therein by suitable heating appliances, such as gas burners or the like, which also serve to maintain it in molten condition. In the operation of such devices, it is extremely important to prevent any great or Violent fluctuations in the temperature of the molten mass, as these are apt to produceimperfections in the cast slug or type. One of the principal causes of such fluctuations 'is the chilling effect involved in the delivery to the pot of the solid metal, and it is therefore the chief object of my invention to segregate as far as possible this cold metal from the molten mass. This I prferablyaccomplish by providing the pot with an interior auxiliary pocket or chamber, into which the pig or other metal is introduced from time totime as occasion demands. This pocket communicates by means of a restricted opening with the interior of the pot, and the heat of the surrounding molten mass is relied upon to melt the metal gradually in the pocket, from which it passes slowly into the p0t,in this way minimizing the chilling effect upon thecontained mass.

In the accompanying drawing, I have shown my invention in preferred form and by way of example, and as applied to the casting mechanism of a linotype machine. However, it will be understood that many ariations and alterations may be made therein, and in its -mode of adaptation, which will still be comprised Within its My invention relates to typographical.

chines, such for instance as those-designed for the productionof type, dies, etc., instead of slugs or linotypes asherein presented'l Generally speaking, I desire it to be understood that i do not limit myself to any specific form or embodiment, except in so far as such limitations are specified in the claims.

Referring to the drawing: F igure l is a perspective View of the pot, partly in section and broken away, having my invention applied thereto; and Fig. 2 is a top plan view thereof, partly broken away, on a reduced scale. 1 v

The pot A is provided in the usual manner with the outlet or mouth B, the pump or plunger O, the movable cover D, and the heater or gas burner G. These parts may be of the usual or any well known construc- 'tion, and their specific form constitutes no part of my present invention.

According to my improvement, the pot is further provided with the interior pocket or chamber E, preferably connected to one of the side walls thereof, and so located that it is immersed, partly or wholly, within the mass of molten metal, in such manner that its heat will be communicated to the pocket and is availed of for the purpose of melting the solid pig H or other metal therein. The pocket E is open at its top, and communicates with the main portion of the pot by one or more restricted openings or orifices F, sothat the metal as it is melted may slowly and gradually pass therefrom into the surrounding mass and thus augment it. It will be seen that in this way the chilling effect of the cold metal on the molten mass is minimized, and as a result thereof that the extent and violence of its fluctuations in temperature are materially reduced.

As previously stated, my improvements have been shown only in preferred form and by way of example, and as applied to a specific style of machine. Obviously, many changes and modifications therein will suggest themselves to those skilled in the art without departure from their scope.

Having thus described my invention, its construction and mode of operation, what I claim and desire to secure by Letters Patent of the United States is as follows:

1. A casting pot having a main chamber for the molten metal and provided with an auxiliary pocket or chamber to' contain a metal pig, the said pocket being located wholly within the main chamber. and communicating therewith; whereby the entire surface of the pig will be subject to the'influ'ence of the heat within the pot.

2. A casting pot having a main chamber for the molten metal and provided with an auxiliary pocket or chamber to contain a metal pig, the said pocket being located wholly within the mam chamber and open at its top and formed at its bottom with an opening communicating with said chamber; whereby the pig will be subject to the melt-' ing influence of the heat in the upper part of the pot and the heat of the molten metal. in the lower part thereof.

3. A casting pot having a main chamber for the moltenmetal and formed on the in 20 lower portion immersed within the mass of 25 molten metal in the main chamber'and with its upper'lportion above the level of the molten-mass; whereby the pig w1ll be subject to the melting influence of the heat in the upper part of the pot and the heat of 30 the molten metal in the lower partthereof In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM MILN-ER WOGD.

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