US19258A - Improvement in flasks for casting wheels - Google Patents

Description

IlNiTn STATES ArtNr PriceC4 F. NISH'WITZ, OF BROOKLYN, NEV YORK.

Specification forming part of Let-ters Patent No. 19.258, dated February 2, 1858.

To all whom it may concern.-

Be it known that I, FREDERICK NIsHwrrz, of the eastern district of the cityof Brooklyn, in the county of Kings and State of New York, have invented a new and useful Improvement in Flasks for Casting Vheels upon their Shafts or Axles; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being` had to the accompanying drawings, making part of this specifica-tion, in which- Figure l isa vertical central section of a flask containing the pattern of a wheel, the shaft, and the mold. Fig. 3 is a plan of the same. Fig. 3 is a vertical central section of the flask containing the shaft and the casting of the wheel, the latter being shown tinted red.

Similar letters of reference indicate corresponding parts in the several figures.

rIhis invention consists in providing` the flasks with guides or sockets, of metal or wood, of a proper size to receive the shaft snugly within them and properly arranged to hold the shaft in its proper place within the mold, independently of the sand, thereby enabling` the mold to be made more expeditiously and the wheel to be cast more truly upon the shaft.

To enable others to make and use my invention, I will proceed to describe its con struction and operation.

A is thelower portion of the flask, and B is the upper portion.

C and D are the guides or sockets which constitute my invention, one in each portion of the flask, connected with the exterior of the flask by arms a a, said guides or sockets being bored truly to receive the shaft and to stand exactly in line with each other when the two parts of the flask are put together and confined to each other by their pins b b and lugs e e.

, I prefer, when practicable, to make the whole flask of cast-iron and to cast the guides or sockets C D and arms a a with their respective port-ions of the ask; but when, from the size of the flask, this is not practicableor l convenient, the guides or sockets may be made of metal, or of wood bushed with metal, and secured properly to the exterior of the fiask.

E is the pattern, made without a core, but with a hole of proper size to receive the shaft F snugly within it. This pattern is molded in the sand in the usual manner, the shaft be,

ing in the iiask and pattern at the time of molding. I prefer generally to have the pattern attached to a match-plate, cc, as shown in Fig. l; but this match-plate forms no part of my invention, as it is commonly used in casting wheels and various other articles. Vhen the mold is complete, the top portion, B, of the flask and the pattern may be removed and the top portion of the flask replaced, while the shaft remains in the guide or socket G of the lower portion of the flask; or the shaft may be lifted out ofthe mold before removing the upper portion of the flask andthe mold, and replaced after the upper portion of the flask has been replaced. rIhe metal is poured into the mold in the usual manner, and as the shaft is held firmly by the sockets or guides, so as to be incapable of moving in the least degree from its true position, the wheel cannot fail to be cast true, which is not always the case, even with the greatest care, when the shaft is only held in place by the sand.

To insure the wheel being Cast in a proper position longitudinally ofthe shaft, I provide a small shoulder on the shaft, as shown at d in Figs. l and 2, to rest on the top of the guide or socket C of thelower portion of the ask.

Vhat I claim as my invention, and desire to Asecure by Letters Patent, is-

The employment of guides or sockets C D, of metal or wood, attached to the flask, to receive and hold the shaft or axle within the sand-mold independently of the sand, substantially as and for the purpose herein set forth.

F. NISHVITZ.

lvitnesses:

W. TUscu, .Litres F. BUoKLnY,

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