US391971A - Ticut - Google Patents

Description

(No Model.) a SheetsSheet I. HENRY A. HOUSE & HENRY A. HOUSE, Jr.

SAND BLAST APPARATUS.

N0. 391,971. Patented Oct. 30, 1888.

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3 Sheets-Sheet 2.

(No Model.)

HENRY A. HOUSE & HENRY A. HOUSE, Jr.

SAND BLAST APPARATUS.

Patented Oct. 30, 1888.

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(No Model.) 3 Sheets-Sheet 3A HENRY A. HOUSE & HENRY A. HOUSE, Jr.

SAND BLAST APPARATUS. No. 391,971. Patented Oct. 80, 1888.

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UNITED STATES PATENT .FFlClEQ HENRY A. HOUSE AND HENRY A. HOUSE, JR, OF BRIDGEPORT, CONNEC- TIOUT, ASSIGNORS OF ONE-THIRD .TO E. EMMONS GRAVES, OF SAME PLACE.

SAN D- BLAST APPARATUS.

SPECIFICATION forming part of Letters Patent No. 391,971, dated October 30, 1888.

Application filed June 1, 1887. Serial Nofillljfi'l. lN'omodel.)

To all whom it may concern.-

Be it known that we, HENRY A. IIOUSE and HENRY A. HoUsE, Jn, citizens of the United States, residing at Bridgeport, in the county of 5 Fairfield and State of Connecticut, have invented certain new and useful Improvements in Sand-Blast Apparatus; and we do hereby declare the following to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which itappertains to make'and use the same.

Our invention relates to machines for finishing the surface of wood, metal, or other substances by the use of sand, and has for its object to accomplish the resultautomatically and by means wholly mechanical, and to do away entirely with the use of air'ourrents or steam in propelling the sand; and with these ends in view our invention consists in the details of 2c construction hereinafter fully explained, and

then recited inthe claim.

In order that those skilled in the art to which our invention appertains may more fully understand how to make and use the same, we

2 5 will describe the same in detail, referring by letter to the accompanying drawings, which form a part of this -specihcation,andin which- Figure 1 shows a side elevation of our im provement, the casing being sectioned; Fig.

0 2, a detail sectional elevation of the propelling-wheel and the drum inclosing the same; Fig. 3, an end elevation, the case being sectioned, as at Fig. 1; and Fig. 4, a detail vertical section of the propelling-wheel.

Similar letters denote like parts in all the figures of the drawings.

A is a casing which incloses all the working parts of our machine, and B is a vertical shaft journaled within said casing. Rigidly 40 secured to this shaft is a balance-wheel, G, of

sufficient diameter and weight to secure uniformity of motion.

D are blades having T-headed shanks E, which are secured within a groove, F, in the 5 periphery of the wheel 0 by means of pins G, as shown at Fig. l. The wheel and blades are incased within a drum, H, which latter has a mouth, I, substantially tangential to said wheel. Near the lower end of the shaft is secured a small band pulley, J, by which motion is transmitted from the driving-pulley K through the belt L to the shaft B.

Q is a shaft carrying a roll, R. S is another roll mounted on shaft T at the bottom of the casing. The two rolls and shafts last described 1 are caused to revolve by power derived from any suitable source-as, for instance, aseparate counter-shaft, which we have not thought it necessary to show. Over the rolls R S is an endless belt, U, having secured thereto at intervals the buckets V, which carry the sand.

W is a chute, within which the sand elevated by the buckets is deposited, and X is a hopper wherein the sand flows from the chute. The outlet of this hopper is through the drum H in a line with the mouth thereof and within the field of operation of the blades D, as indicated by the dotted line a at Fig. 2, so that it will be readily understood that when the wheel O is rapidly revolved the blades will strike the stream of sand and throw the same with great violence out of the mouth I.

The article to be operated upon is within the field of the propelled sand, as shown at Y, and may of course be manipulated or mounted 7 on a suitable arbor in any well-known or desirable manner.

In order that the sand which has become too fine by reason of too frequent use may be separatedfrom the coarser particles, we provide an inclined sieve, Z, immediately below the mouth of the drum, so that the sand after it has been driven against the article to be operated upon will fall on the sieve, the fine particles sifting through the same and accu- 8 mulating at the bottom of the casing, whence they may be shoveled away, and the coarser particles flowing down and emptying within the field of operation of the buckets. Of course sieves of various degrees of fineness may be 0 used as the case may demand.

Leading from the top of the casing is a fine, A, in which 'revolves a fan, 13, mounted on the upper end of the shaft B, the object of the said fan being to create a draft to carry away 9 5 all the dust arising from the use of the sand.

Having thus described our invention, we claim- A sand-propelling apparatus consisting of the following instrumentalities and parts, namely: the wheel 0, mounted on the vertical shaft B, journaled within the casing A, the

5 blades D, secured to the periphery of said Wheel, the drum H, incasing said wheel and having a mouth tangential thereto, the hopper X, secured to the top of said drum in a vertical plane with the mouth thereof, the

10 chute W, adapted to deposit the sand within the hopper, the endless belt U, carried by rolls R S and having buckets adapted to scoop the sand and deposit it in said chute, the sieve Z, attached to the casing immediately below 15 the mouth of the drum and extended at an incline toward the bottom of the casing and in close proximity to the sand-elevating mechanism, and the exhaust-fan B, mounted on the upper end of the shaft B and adapted to revolve within a flue, A, which latter extends 20 from within the casing, substantially as set forth.

In testimony whereof we affix our signatures in presence of two witnesses.

HENRY A. HOUSE. HENRY A. HOUSE, JR.

\Vitnesses:

S. H. HUBBARD, S. S. \VILLIAMSON.

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