US267854A - William b - Google Patents

Description

'W. B. FARRAR.

- TURBINE WATER WHEEL. No. 267,854. Patented Nov. 21, 1882 WITNESSES INVBNTOR ATTORNEYS.

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UNITED STATES PATENT OFFICE.

WILLIAM B. FARRAR, OF GREENSBOROUGH, NORTH CAROLINA.

.TURBINE WATER-WHEEL.

SPECIFICATION forming part of Letters Patent No. 267,854, dated November 21, 1882. Application filed April 22, 1882. (Model.) Patented in Canada March 13, 1882, No. 14,405.

To all whom it mag concern 4 Be it known that I, WILLIAM B. FARRAR, of Greensborough, in the county of Guilford and State of North Carolina, have invented a new and useful Improvement in Turbine Water-Wheels; 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, forming a partof this specification,in whic' Figure 1 is a side elevation of my improved wheel, part of the body of the case being broken away and one of the hoods or top sections removed. Fig. 2 isa perspective view of one of the hoods or hood-sections detached.- Fig. 3 is a detail vertical section, showing means of attachment of the gate-lever to the movable sleeve of the wheel-shaft. Fig. 4 is a cross-section of .one of the gates. Fig. 5 is a detail view of one of the wheel-buckets detached and enlarged.

My present invention is an improvement upon the turbine wheel for which I have received Letters Patent of the United States No. 224,161.

The improvement is embodied in certain changes in the construction and arrangement of portions of the wheel-case and the pivots of the gates and the lever for operating them, as hereinafter set forth and claimed, and shown in the drawings. I

The wheelproper is constructed as in my aforementioned original inventionto wit, of a hub, a, fixed on a vertical axis, 12, and a series of long, thin, and narrow blades or buckets, c, that diverge downward at an angle of about forty-five degrees, and are of gradually-increasing Width from the upper to the lower end, and also curved spirally. Their lower ends are rigidly attached to a circular band or rod, 7). The case of the wheel haslikewise substantially the same general outline or form as the original wheelto wit, an approximately conical top combined with a cylindrical body, A. Instead of casting said top of the casein one piece I divide it into segmental sections, of which each hood B is one, as shown in Fig; 2-that is to say, each hood B is cast separate from the others, together with its base-flange, that rests flat on the horizontal rim of the body A. This construction of the several hoods or hood-sections separately conduces very Ina-- terially to economy and convenience in casting the wheel-case and putting its parts together. The lower side, 01, of each hood B is slightly inclined, or rather curved inward, it being formed vertically in coincidence with the arc of a circle described in a vertical plane from the pivot f of the gate Fof the hood, by which conformation the hoods are adapted to admit at the lower side the maximum quantity of water which can efficiently act on the wheel and offer minimum resistance to its passage while acting upon the buckets, so that the greatest practicable propulsive effect is secured from the volume of water thus utilized. The inner ed geof the rim 6 is also beveled, as shown in Fig. 1, to correspond and coincide with the inclination of the lower side, d, of the hoods B, and also projects over the band 12, attached to the buckets 0, whereby the water is guided directly onto the buckets and any loss thereof prevented when the spindle-step has worn down.

The mouths of the hoods B are closed by gates F, that are substantially triangular in shape and pivotedat their upper ends to the cure them by means of a washer and a screw,

k, that enters a hole tapped in said lug. The result of this construction and combination of parts is an economyin manufacture and avoidance of the liability of' the connection of the rods with'the gates becoming broken or loose by reason of the wear or strain incident to use.

The shears K K, which support one end of the gate-adjusting lever, H, are rigidly bolted to lugs t, Fig. 1, which are cast solid with one of the hood-sections B.

It is important to provide a secure connection between the lever H and sleeve I, and to this end I pivot them together by means of screws k, that pass'laterally through the sleeve I and the lever H, (which is slotted to receive the latter.) The heads of the screws 70 are countersunk in the inner-sides of the sleeve, as shown in Fig.3, and nuts I are applied to their outer ends. It will be seen that by this arrangement, should the nuts 1 become detached, the screw-pivots is will not fall out, so that the connection of said lever and sleeve will remain essentially intact, as before.

Having thus described my invention, what claim, and desire to secure by Letters Patent, 1s

1. The top of the wheel-case composed of a series of independent hood-sections, B,which are approximately triangular in outline, and made independent and detachable one from another, as shown and described.

2. In combination with the horizontal rim a, the hood-sections B, whose lower sides, d,- are curved, and, together with the inner edge of said rim, coincide with the arcs of circles described in vertical planes, as described.

3. The combination of the rim 0, having its inner edge beveled, as shown, with the hoodsections, whose lower sides areinclined and arranged so that their inner surfaces coincide with such beveled edge, as shown and described.

4. The gates F, having cylindrical lugs 9, cast in one piece with them, and tapped, as shown and described, for attachment of the rods for adjusting said gates, as shown and described.

5. The combination, with the sleeve I and lever H, having a vertical opening in its middle portion, of the screw-pivots which pass through said sleeve and lever, and have their heads countersunk in the inner side of the sleeve, as shown and described,for the purpose specified.

WILLIAM BIN GHAM FARRAR.

Witnesses:

IAGO M. LINDSAY, A. H. ALDERMAN.

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