US172217A - Improvement in turbine water-wheels - Google Patents

Description

H. WATERS. TURBINE WATER-WHEEL- No. 172,217.. Y Patented 12111.11, 1876-.

Iggy,

3 Sheets-Sheet 2.

H. WATERS. TURBINE WATER-WHEEL:

Pat'ented Jan. 1'1, 1876.

No.17Z,Z17.

. v u A I llrlll if N. PETERS. PHOTO L THOGRAP fisheetsfSheetS.l H. WATERS.

TURBINE WATER-WHEEL r No.17Z,Z1 7. Patented Jan.11, 18r76g WijrrlESEEE- 4 Im/Erl'l-trr- PQI fwh/ N.PETERS. PHOTO-LITHOGRAPNER. WASHINGTON D C UNITED STATES PATENT OEEIGE.

EEEVEY WATERS, oF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN TURB/INE WATER-WHEELS.

Specification forming part of Letters Patent No. 172,217, dated January 11, 1876; application led v 'i DecemberV 2l, 1875.

To all whom it may concern: c

Be itknown that I, HERVEY WATERS, of Boston, inthe county of Suffolk and State of Massachusetts, have invented an .Improve-- ment in Turbine Water-Wheels, of which the following is a specification:

This invention relates to turbine waterwheels, and is shown as applied to a wheel receiving its water internally from an elevated pen-stock or trough, and discharging the water through its outer peripheryinto a race. Figure lis a side elevation of this improved turbine wheel. Fig. 2 is a vertical section thereof. Fig. 3 is a top view of the devices operating the buckets, the upper flange ofthe wheel, and the corresponding guides to regulate and adjust the capacity of the wheel. Fig. 4 is a top view of the chute or guide pitch and the movable bucket-wheel; and Fig. 5 is another View of the annular guide and bucket-wheel, `showing' clearly the annular space for guiding the lower flange of the bucketwheel.

A is a pen-stock or water-receiver, into which water enters at a, and within the receiver is formed a tube, b, to receive the shaft d, it being hollow, and .litted to a step, e, and adapted to receive within it the connecting-rod c, connected at top with the spider f, carrying screw-rods g, connected positively with the spider-arms and with projections on-the cylindrical guide h, which is arranged to be raised or lowered'throu gh the action of a large toothed wheel, z', engaging smaller toothed wheels j 7, provided with internal screwthreads, and

fitted to screw-threads or screw-rods y. The

large toothed wheel i is connected with the pen-stock A to turn thereon, but not to rise or fall, and the small wheels engaged by wheel i are also prevented from movin g up or down by means of arms x x, and therefore movement of' the large wheel in one or the other direction will move the rods g, spider f, connecting-rod c, cylindricalguide h, the part m, and buckets and upper flange ofthe wheel up or down.

The connecting-rod cis fitted to rotate in the spider, having shoulder-bearings above and below it, and extends downward into shaft d, which is provided at its lower end with a long slot, lc, (see Fig. 2,) to permit the passageiup and down of a key, l, such key lconnecting the rod c with the part m, carrying the buck et-wheel n, land connected with the part m by screws p. As the connecting-rod c is raised vor lowered it moves with it the part m, and

its attached bucket-wheel n, causing the bucket-plates o o of the bucket-wheel, connected by 1means of anges q, to rise or fall, and project more or less above 'the upper surface ofthe 4guide-pitch r, and annular guide s slotted to receive thebucket-plates o, secured to the shaft d, which does not move longitudinally', but is always held in a fixed position, and adapted to rotate with the shaft.

At the lower end t of the tube b is attached, by screws or otherwise, (see Fig. 2,) a guide-pitch of the usual construction, and the upper side of this pitch-plate is always in line with the top of the guide s, through which the buckets slide. The outer vertical faces of the ends ofthe division-plates v fit into grooves z, formed in the inner side of the adjustable cylindrical guide h.

The pen-stock is suitably supported, in this instance, by posts a', rising from a framework, b', provided with the step for the spindle or shaft d, ears or lugs c', projecting from the pen-stock resting on the posts. To the penstock Vare attached guides d', adapted to enter grooves in a flange on the cylindrical guide h, and to guide it as it is moved up or down. A suitable packing may be placed between the cylindrical guide h and the penstock. Y

The water received at a passes through the pen-stock into the chute or guide-pitch, and out through the bucket-wheel, as indicated by the arrows, and turns the wheel in the manner as usual in the French turbine, when the gate is entirely withdrawn.

From the above description it is obvious that the bottom of the cylindrical guide h and the bottom of the upper flange q will always be in the same plane, whether the same Vbe v elevated more or less, and the upper face of the guide s, and the upper face of the pitchplate'contiguous thereto, are always in the same plane, whether the capacity of the wheel be made more or less, by the adjustment of the parts through the screw-rods g, as before described.

From this construction describedandshown,

it is also obvious that the discharging-orices at their extreme outward discharging-points, will always he smaller than the same orices next the guide h, which would not be the case if the cylindrical guide h were pushed considerably below the upper flange g of the wheel, as is practised with the common French turbine.

It is obvious that, in the use of this wheel, the head of water lying upon and within it will produce a strong upward pressure against the upper'rim of the wheel, and also against the lower end of the cylindrical guide, and to counteract this to the desired extent water is admitted under substantially the same head into the annular space between the lower flange q and the upper working rim of guide s, through which the buckets slide. This can be done through suitable openings near the inner edge ofthe buckets, either through holes for that purpose made in the rim, or through slots at the side of the buckets. The lower rim q should iit snugly in the annular space between the two walls of the guide s, upon each side of the annulus, and if found desirable for this purpose suitablel packing may be introduced there in any well-known manner.

Itis obvious that, under some conditions,

`name to this specification in the operate in connection with each other, to vary the capacity ofthe wheel, substantially as described.

2. rIhe guide, having an annular space to receive the bucket-plates and lower rim of the wheel, combined with the wheel, and adapted to operate substantially as described, to counterbalance the upward pressure of the water. 3. The cylindrical guide, bucket-wheel, and guide-pitch, in combination with an annular guide, slotted to receive and guide the bucket-plates, as specified.

In testimony whereof I have signed my presence of two subscribing witnesses.

HERVEY WATERS. Witnesses:

G. W. GREGORY, W. J. PRATT.

Images