US287996A - Molding-machine for foundry use - Google Patents

Description

FBARDEZ. MOLDING MACHINE POR POUNDRY USE.

YPafelltd Nov. 6, 1883.

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UNITED *STATES,-A

PATENT Fries.

FRANK Barthez, on snn- FnnnCIsCo, CALIFORNIA..

MOLDlN'G-MACHINEFOR FOUNDRY USE.

Y sPECIFIcn'rIoN refining part of Letters Patent No. 287,996, dated ntveinter e, ieee.

` Application mea June es, Isae. (No model.)

To @Zi whom, it may concern:

Beit known that I, FRAM; BARDEZ, a citizen of France, but residing in the city and county of San Francisco, State of California, have invented certain Improvements in Molding-Machines for Foundry Ilse; and I do hereby declare that the following is a full, clear,

and exact description of my said invention, the accompanying drawings being referred to as a part of the speciiication.

My invention relates to a machine or apparatus foif use in foundry work.

The object sought to be attained is to produce a machine to facilitate foundry work in casting pulleys, ilyavheels, cone-pulleys, cyli inders, piston-rings of any required width and diameter, .and other regular work, whereby a A multiplicity of patterns, is dispensed with and line :r zr in Fig. 2. Fig. 2 is a plan or Vtopr view of the machine before the flask is set on it. Figi 3 is a horizontal cross-section taken through the line y y, Fig. 1. Fig-"4 shows details of the molding-cylinder form, the rings,

' the movable platen to carryY the pattern for the hub or center part of the article, and the intermediate rings that close the spaces between the platen and the molding-cylinder and between `the cylinder and the outside Y Y h between the arms D.

spending ears on the flask. These insure the accurate centering and adjustment of the fla-sl@ sections.

B* represents the outline of the iiask which rests upon the rim B, and b* the line dividing the two halves thereof. The section in Fig. 1 is taken on a line which does not show any of the ears b.

The standards A are slotted, and have grooves d on the inner side, toreceive the ends Aof a three-armed follower, D. These grooves are guides to insure a true horizontal position of the follower at all times. y

A vertical screw-shaft, E, works through a nut, F, and the nut F isprovided with ahandwheel, f, and is held in a movable hub, G,

from which radial arms extend to and fit into the guides in the standards in the same many lower F G together.

n To insure a horizontal position, accurate movement, and a true working of the plate H, these rods pass through holes in ears or webs Movement of the follower D thus sets the outside pattern or form, while the follower F G operates the center plate. At the end of each arm of these two followers is a clamp-screw, y, which works through the slot inthe standard and takes into the arm. By setting up these screwsthe arms are securely held at desired points between the base and the top of the machine.

The follower D has a number of concentric grooves, increasing in size in regular manner from the smallest, which is of a size to receive and hold a cylinder, I, having a dia-meter equal to that of the center plate, H, up to the largest, which corresponds to the size of the outer rim, B. I employ, in a machine of 'medium size that would have the capacity to turn out ordinary sizes of articles, a number of these pattern cylinders, each one about twelve inches length of face and regularly increasing in diameter, according tothe grooves provided K v y insured without applying the rule.

-2 l seance in the follower D. The construction here given has grooves for eight different sizes.

The intermediate rings, J K, are in. two sets and of various breadth of face, as they are required to cover the spaces and fit accurately between the plate and the interior surface of the cylinder and between the rim and the exterior of the cylinder. rlhe difference in the size of each pair of rings J K is then exactly equal to the thickness given to the cylinder. These rings are held in place by means of pivoted lugs or buttons m m beneath the rim B, and similar ones on the under side of the center plate. When these parts are in place, there is presented a smooth level surface on the machine-top to receive the flask and sand, of which theportion outside of the pattern-cyl inder is stationary, but that portion rinside is movable up and down. j

Upon the side of one of the standards A, I provide a scale, I), to indicate the amount of projection of the top edge of the cylinder above the surface of the machine bed or plate. A

pointer, q, on the end of the corresponding arm, D, enables the follower to be accurately set, and any required position of the pattern A similar scale upon one ofthe other standards, with pointer q on arm G, will serve to adjust the lower follower, by which the position of the center plate is determined. v

The cylinder I is, held in place upon the arms Gr by having a rod, as fi, passed through openings in the arm, and in it the cylinder.

The utility and 1advantage of this machine will be evident to any practicalworkman; but in order to clearly show the mode of handling it I will proceed to describe the operation of molding a pulley with six-inch face and without joint on the outside. n

As the preliminary adjustment, the part H is run down by lowering the followers D F Gr until the top surface presents a smooth surface, the edge of the cylinder and the face of the center plate being thus brought iiush with the rim. A half-pattern, L, to form the hub and armsI of the pulley, is then laid upon the center plate, H, inside the cylinder, and a'halfflask containing sand is inverted over the surface and properly centered by bringing its holes into line to register with the holes in the rim B. A pattern-cylinder, I', of the required diameter having been previously set upon the follower, the edge of this cylinder is then proj ected above the surface-plate on which the sand and flask rest until the arm D, carrying the indicator, is brought t0 figure 677 on the scale, and the clamps g are tightened. The cylinder then extends six inches into the sand, which gives the .full width of face for the pulley. The next step is to mold the arms and hub. For this purpose the clamps of the lower follower are loosened, and the center plate,

` having the halfpattern on it, is pressed upward into the mold by turning the hand-wheel until the arm G of the lower follower is brought to lfigure 3 on the standard-scale, at which point the follower is then set by its clampscrews. The face of the center plate, H, is theny exactly three inches below the top edge of the cylinder within the sand at the center of the six-inch rim, and the whole rim of the pulley and onehalf of the arms and hub are molded. The cylinder and center plate, with half-pattern, are then drawn down clear of the sand, and the flask is lifted off and turned over. After the center plate is raised to position and the cylinder isset up also flush vvwith the rim, the cope or upper -half of the mold is inverted and set in place to produce the central or male portion of the mold. This is formed by simply drawing down the center plate, with its half-pattern, into the cylinder until the face of the plate is exactly three inches 'below the top face of the flask-supporting rim, and then fixing the follower bysetting up the clampserews. After the sand is properly rammed and the molding operation finished," the cylinder is drawn down until the top edge comes l to thelevel of the center plate, when 'the flask is readily raised from the machine and placed on the drag or lower previously-formed part of the mold. Y

. In making pulleys with outside joint in the rim the machine is set as shown in the sectional view, Fig. 1. Each half of the mold will be formed in the same manner and with the center Iplate in the same position-i. e., flush with the rim.

1 From this description, with the aid of the drawings, it will be seen that plain rings of any diameter can be molded of different thickness and breadth of face also, solid center pulleys, double arm pulleys, cone-pulleys, and flywheels can be produced in a rapidand accurate manner. tern in place of the cylinderpattern I and providing rings J K with edges corrugated or properly formed to iit into the pattern, I can also mold gear-wheels.

By substituting a gear-pat'- v IIO Having thus fully described my invention,

spect to the flask-supporting rim, substantially as described.

3. In a molding-machine, the y,combination of a stationary iiask-supporting rim, a vertically-adj ustable patterncarrying follower, and afollower adjustable in like manner, carrying a center plate, lthe screw-shaft E and operating-nut F5 and :L means or device for setting Athe said followers, and the rings for extending and holding each follower in position of adthe surface of `the center plate and the ask- 1o justment, substantially as clesei'bed. supporting rim, substantially as described.

4. In a molding-machine, abase, a, a flask- T 5 supporting rim, B, supporting-standardsAA, FRABK BARDEZ a pattern-holding follower, D, a center-plate Vitnesses: follower, F G, a screw-shaft, E, and opeiating- EDWARD E. OSBORN,

not F, as a mechanism for moving and setting E. PATTEN.

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