US759568A - Casting apparatus. - Google Patents

Description

No. 759,568. PATENTED MAY 10, 1904. G. STROH.

CASTING APPARATUS.

APPLICATION FILED JULY 20. 1903.

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PATENTED MAY 10, 1904. G. STROH.

CASTING APPARATUS.

APPLICATION FILED JULY 20. 1003.

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UNITED STATES Patented May 10, 1904.

GEORGE STROH, OF SYRACUSE, NEWV YORK.

CASTING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 759,568, dated May 10, 1904.

I Application filed July 20, 1903. Serial No. 166,254. (No modeL) To all whom, it may conccrnr Be it known that I, GEORGE S'rRm-I, a citizen of the United States, and a resident of Syracuse, in the county of Onondaga, in the State of New York, have invented new and useful Improvements in Casting Apparatus, of which the following, taken in connection with the accompanying drawings, is a full,clear,and exact description.

This invention relates to the class of casting apparatus in which artificial pressure is applied to the molten metal in the melting-pot to force said metal into the mold or matrix.

The chief object of the invention is to protect the working parts of the apparatus from the intense heat applied to the apparatus during the operation thereof; and the object also is to provide a casting apparatus which shall have the component parts of its frame securely united, so as to effectually guard against disturbance of their required relative position; and to that end the invention consists in the ll'l'lpl'OVGd construction and combination of the frame of the apparatus and its appliances, as hereinafter described, and set forth in the claims.

In the accompanying drawings, Figure 1 is a vertical longitudinal section through the center of an apparatus embodying my invention. Fig. 2 is a plan view of the said apparatus. Fig. 3 is a horizontal longitudinal section on line X X in Fig. l, and Fig. 4c is a vertical transverse section on line Y Y in Fig. 1.

The apparatus comprises a cast-metal frame composed of vertical side walls a a and an end wall a and is preferably seated on a metal base-plate A. On the said frame is mounted a plate 6, provided with an orifice 0, the melting-pot (Z directly under said orifice, the chute 6, extending from said pot, preferably near the bottom thereof and ascendingly through the top plate; the inclined duct f, ex tending from the bottom of the pot and terminating in the cylindrical chamber 9, the transverse wall It, extending from said chamber to the top plate, and the valve-case i, having a vertical channel z" extending to the bottom of the lower end of the ductf, said parts being cast integral with the top plate L and all sustained in position by rods a 0 The orifice 0 is screw-threaded and has secured therein the threaded bottom portion of the discharge-nozzle which is provided with a flange j, by which it is seated in a recess in the top of the plate 6. The top of the nozzle is preferably beveled to fit close to a correspondinglvbeveled recess in a block 7c, secured in a mortise in the under side of a plate P, which is pivotally or otherwise removably supported on the top plate I) of the frame.

The block is provided with anorifice which registers with the mouth of the nozzle j and with an orifice it" in the plate P, upon which is mounted in any suitable manner the mold or matrix designed to receive the molten metal from the melting-pot (Z. The metal to be melted is introduced into the pot (Z through the chute which is prolonged and provided near its outer end with a suitable cut-oil valve & to prevent escape of heat through said duct during the melting process.

The ductf is extended descendingly from the melting-pot (Z and is prolonged suflieientl y to gradually recede from the heat applied to the melting-pot, and thus protect from excessive heat the cylindrical pressure-chamber g, in which moves a plunger D for forcing the metal into the melting-pot (Z and expelling sufficient melted metal through the nozzle 7' to fill the mold or matrix mounted on the plate P.

The plunger D may be operated by a lever O, pivotally connected to the frame of the apparatus, as shown at O, or by steam or gas or hydraulic power.

The valve 1 in the case 2' must obviously be closed during the operation of the apparatus and is only opened when required to clean the melting-pot and the duct f and cylinder g.

O represents a combustion-chamber, the main portion of which incloses the meltingpot and extends around the greater portion thereof. Said combustion-chamber is formed with an extension O around the ductf and reduced in width, as shown in Fig. 1 of the drawings, which extension serves to heat the said duct suffieiently to melt the metal contained therein preparatory to being forced into the melting-pot d by the action of the plunger D. The extension O of the combusspace n n represent suitable burners, which communicate with the combustion chamber 0 around the melting-pot (Z, so as to heat the same to the required temperature to properly melt the metal in said pot. The burners are to be properly distributed around the melting-pot to heat it uniformly from all sides, and therefore the extra burner 12 (shown in Figs. 1 and 3) may be dispensed with.

t 25 designatepeep-holes through which to observe the temperature of the heat impinging the melting-pot.

WVhat I claim as my invention is v 1. The combinationwith the melting-pot provided with a discharge-port at its top, of a duct tapping the bottom of the melting-pot and extended descendingly therefrom, a pressure-chamber communicating with the lower end of said duct, and a plunger in said chamber as set forth.

2. The combination with the melting-pot provided with a discharge-port at its top, of

a duct tapping the melting-pot and extended descendingly therefrom, a pressure-chamber connected to the lower end of said duct, and a waste-cock connected to the duct at its junction with the pressure-chamber as set forth.

3. The combination with the melting-pot, of a duct tapping the bottom of said pot and extending downward therefrom, a combustionchamber inclosing the melting-pot and extended lengthwise of the aforesaid duct, a pressurechamber connected to said duct remote from the melting-pot, and means for applying pressure to said chamber.

4. The combination with the melting-pot, of a duct tapping the said pot and extended descendingly therefrom, a combustion-chamber inclosing the melting-pot and extended lengthwise of the aforesaid duct, burners communieating with the combustion-chamber adjacent to the melting-pot, a pressure-chamber connected to the lower end of the duct, and means for applying pressure to the interior of said chamber.

5. The combination with the melting-pot, of a duct tapping the bottom of said pot and extended descendingly therefrom, a combustionchamber inclosing the melting-pot and extended lengthwise of the duct, burners communicating with the combustion-chamber adjacent to the melting-pot, a pressure-chamber connected to the lower end of the duct, a plunger in said chamber, and a waste-cock connected to the duct adjacent to the pressurechamber as set forth.

6. The combination with the melting-pot, of v ,chamber connected to the lower end of said duct, a plunger in said chamber, a supplychute extended descendingly to the meltingpot, a cut-off valve connected to the upper end portion of the chute, and a combustion-chamber inclosing thenielting-pot and extended lengthwise of the aforesaid duct as set forth.

8. The combination with the melting-pot, of a duct tapping the bottom of said pot and extended descendingly therefrom, a pressurechamber connected to the lower end of said duct, a plunger in said chamber, a waste-cock connected to said duct adjacent to the pressure-chamber, a supply-chute extended descendingly to the melting-pot, a cut-off valve connected to the upper end portion of said chute, a combustion-chamber inclosing the melting-pot and extended lengthwise of the aforesaid duct, and burners communicating with the combustion-chamber adjacent to the melting-pot as set forth.

9. The within-described frame for metalcasting apparatus, consisting of side walls, and a top plate provided with an orifice, a pot directly under said orifice, a chute extending from said pot through the top plate, an inclined du ct extending from the pot and terminating in a cylindrical chamber, a transverse wall extending from said chamber to the top plate, and a valve-case having a vertical channel extending to the bottom of the lower end of the aforesaid duct all cast of metal as set forth and shown.

GEORGE STROH.

WVitnesses:

J. J. LAASS, WV. H. MEIER, Jr.

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