USRE3866E - Reissued mah - Google Patents

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BRADFORD STETSON, UXBRIDGE, AND ELMER TOWNSEND. OF BOSTON, v

MASSACHUSETTS, ,ASSIGNEES OF BRADFORD STETSON.

Letters Patent No. 29,654, dated Auguxt14, 1860;,1461'331142 No. 3,866, dated March 1, 1870.

IMPROVEMENT IN TURBINE WATER-WHELS.

The Schedule referred to ln than Letten Patent and making put of the um..

To all persons to whom these presents may come:

Whereas, Letters Patent No. 29,654, dated August 14, 1860, have been grantedto us, BRADFORD S'rntrsorr,

of Uxbridge, of the county of Worcestenvand State of Massachusetts and ELMEB Townsnxn, of Boston, of

the county of Suffolk, and State aforesaid, for a new and useful invention having reference to Turbine Water-Wheels; such' invention having been made by the said STETSON, and by him assigned 'to himself and the sad TOWNSEND and, whereas, we have petitioned for leave to surrender such patent, to correct one or more defects therein, and to have a new patent granted to us, 4on an amended or new specification,

Now, therefore, we do hereby declare the said 4invention to be fully described as follows, reference being had to the accompanying drawings,'which are w be -considered as making part of this specification. e

Of such drawings,-v

Figure 1 is a. top view of the said turbine wheel and its i'lume or water-conductor.

Fignre.2, a vertical central and transverse section of the saine.

Figure 3, a horizontal section taken through the wheel, its annular, gate, and flume.

Figure 4 is a top view of the wheel or turbine.

Figure 5 is a top view of the slotted wheel, which is arranged on top of the turbine, and serves to move its buckets in such manner as to increase or diminish' their orifices of discharge. v

Figure -6 is a. sectional view in elevation of the dome, taken so as to represent the mode of arranging its water-chutes.

In the drawings- A denotes the turbine or water-wheel aflxed to a vertical shaft, B,.wl rich is arranged within and con- `centncally with two tubular shafts, -O D, lthe said water-wheel being composed of two open heads a c, placed parallel to one another', Aand at a suitable distance apart to admit a series of cnr-ved buckets, b b b, to beplaced between them, as shownin the drawings. Each bucket is formed as shown in side view in Figure 7, andirc section, as represented infig. 3,v it being constructed with three journals, o d d, two of which, viz., c d, extend from the upper end of the bucket,while the third projects from its lower end, as shown inthe said figures. The two journals d d turn` in bearings 4Mie in the heads, while the third,r journal, c, passes through one of a series of' curved slots e e e, arranged M shown in lThe `said journal c also passes 4into one of another series of slots, f f j,- arranged in a wheel, E, -as shown in tig. 5, that js, in such manner that, when the said wheel E is turned on its axis, it, by means of its slots, shall canse the buckets so to tum in their supports as to either approach toward or recede from one another, whereby their openings of discharge may be either diminished or increased in'sze.' Y

Surrounding the wheel is an annular gate, F, "a side viewof which isshwn in iig. 8. It `is furnished with a series of openings, g g, arranged in it as shown in the drawings. This is aflxed to the. outer shaft D;

while the slotted wheel E is fastened to the second shaftO. v.

Agear-wheel, h, is carried by the'shaftD, and engages with a pinion, i, tixed ou-n shaft, K, ou whose upper end is a hand-wheel, l. By turning the band-` wheel, the gate may be revolved horizontally, so as either to open or close the Hume-eductiou passages.

Furthermore,I there are 'arranged on the two shafts B and C, inv manneras shown' in fig. 2, two disks,m m, one being'atixed on each shatt.-

A tangent screw, o, turns in a projection, p, extended from one of the disks, and is screwed,.an.d through another projection, p',`that extends from the other disk, the same being as shown in Figure 9, which is a sectional view of the disks, projections, and screw.

`:By applying a key to the head of the screw and tn rning the screw, motion may be imparted to the slotted wheel E, so as to cause 'it to turn and operate the buckets as described. y

The gate works against the inner surface of the concentric annular flume G, which is constructed so as to surround the gate, the wheel,` andthe several shafts, as shown in figs. 1, 2, and 3, and is-provided with a series of dischargingLpassages,,s s s, disposed within its lowest part, and corresponding in number with those of thegate. Besides such, the umehas a series of chutes 0r transverse partitions, t t t, e'ach of which is placed within the flume, and extends across it from side to side, and downward iu a helixas shown in the drawings. Theyserve to'direct the water of the u'me to the eduction-passages u u u, and so that it may impinge against each of the buckets in that direction, which will cause it operate with the greatest useful effect.

By means of the chutes, the water enters into the turbine in several streams. each of which is so isolatedl from the others, and governed in its direction by the chutes, as to enableit to operate without being injurlously-a'ected by any of the otherstreams.

By applying the buckets tothe wheel as specified, and by furnishing them with a means of moving them relatively to each other, so as eitherto increase or di-v minish their discharging-openings, we are enabled to retain the water'against the buckets long enough for it to expend its power against them.

Although we may regulate the amount discharged from the fiume, when that amount is decreased it will ,not operate with the best possible eiect, unless the discharge-orifice of each bucketvis drnnishedvso as to prevent the water from escaping from the buckets too freely, for, when the dischargingopening of the bucket remains constant insize or areamncb-of the water that would impinge against the bucket with useful elfect, escapes through the bucket without properly actlng thereon.` l

What we claim as the'invent-ion of the said BRAD- ronn' S-mrson is as follows:

The slotted plate E and its sha; C, arranged with the vwheel A and its shalt B, joiningthe two shafts Band l C by the disks m m and screw/,mconneeted as described, and having the plate E applied to the buck-v elgs, andthe latter to the wheel-heads, as speciied.

Also, the arrangement of the annular 0r tubular gate around and concentric with the wheel, and within and concentric with the flume or curb, as set forth. r

annular or tubular Also, the arrangement of the gate and its operative mechanism within the curb, and

with to the wheel arranged within and concentric with such curb, in manneras shown and explained.,

Also t-he combination and arrangement of the gate F with the flume or curb of the wheel, the shaft C and the plate E applied to such wheel and its shaft B, the whole' being substantially as explained and represented. Y y

Also, the combination and the arrangement oi' the shall; D and the gate F with the llmne or curb, the wheel, 'the shaft C, and the plate E applied to such wheel and its shaft B, the whole being substantially as described and represented.

. BRADFORD STETSON.

ELMEB. TOWN SEND. Witnesses:

R. H. EDDY, S. N. PIPER.

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