US87625A

US87625A - Improvement in exterior casings for turbine water-wheels

Info

Publication number: US87625A
Authority: US
Publication date: 1869-03-09
Anticipated expiration: 1886-03-09

Description

NrrEn STATES PATENT OFFICE.

' JOHN w. BOOKWALTER, OF srnmenmnn, OHIO.

IMPROVEMENT IN EXTERIOR CASINGS FOR TURBINE WATER-WHEELS.

' 'Specification forming part of Letters Patent No. 87,625. dated March 9, 1869.

To alt whom it may concern:

VBe it known that I, JoHn W. BOOKWALTER, of Springfield, in the lcounty of Clarke and State of Ohio, have invented a new and useful Improvement in Portable Forebays or EX- ternal Gasings for Water-Wheels; and I do hereby declare that the following is a full, clear, and exact description ofthe same, reference being had to the annexed drawings, making part of this specification, in Which- Figure l is a perspective view. Fig. 2 is a vertical section, and Fig. 3 is a vertical longitudinal section.

The same letters in all the figures indicate identical parts.

My invention relates to portable metallic `'orebays or external casings for Waterwheels,

. A../and is especially designed for that class mof turbines which are inclosed in a casing colnposed of a cylinder and crown-plate with parallel flanges, between which are placed guideplates, which, "receiving the water horizontally, discharge it, centrally or vertically,

' through the Wheel, and into apipe leading into the tail-water.v

The external casing is made of cast-iron, and is in form an Oblate spheroid. This form gives the greatest diameter to that plane in which. the water ows upon the wheel, and, by reducingthe altitude, enables the casing to be constructed with the least weight of metal. y

The casing is constructed in two parts, A and A', formed with flanges, by means of which the two parts can be bolted together. The lower part is formed With lugs C, through which bolts may pass, fastening it to the frame on which the portable forebay is to be supported. A tubular bearing, D, is formed in the bottom, the upper part of which, D', projects upward into the chamber, to receive Aand support the lower flange of the wheelcasing.

As the tubular bearing is raised above the bottom of the external casing, the wheel and its case may be conveniently adjusted in position bytaking hold of the [lange projecting over thetop of the bearing D.

The cylinder which` incloses the Wheel may conveniently be keyed in position by driving Wedges between it and the downwardly-projecting portion of the tube D.

The Water enters through a pipe attached have been used for waterwhee1s.

to the Opening B, placed in the side of the external casing, and is discharged through an opening in the bottom D, already described.

The top of the casing has, centrally placed, an opening at E, through which the wheelshaft passes 5 and into this opening is fitted a stuffing-box, F, to prevent the escape of Water around the shaft. A bridge, G, with movable cap, is cast or bolted upon thetop of the case, and properly nished to form a bearing for the shaft. An arm-hole, H, is placed in convenient position, and closed by a cap held in position in the usual manner. Another hole and stuffing-box are arranged for the introduction of a rod to operate the gates when such a rod is employed.

I am aware that portable external casings These have generally been made, in Whole or in part, of wrought-iron, and in a cylindrical form, so that metal was Wasted, and the Weight to be handled increased unnecessarily bycreating an extension of the water-chamber in a direction in which no extension Was required. I do not claim, therefore, a casing broadly, but

limit my claim tothe peculiarities of construction as invented by me.

What I claim as my invention, and desire to secure by Letters Patent, is V 1. As a new article of manufacture, a portable metallic forebay Or external casing for a turbine of the class mentioned, having a tubular bearing, D', projecting into the chainber for the support of the Wheel-case, substantially as described.

2. Such a casing, combining in its construction the following elements,viz:' two pieces which, When bolted together by their iianges, form an oblate spheroid; an induction-pipe, B, in the side, and an eduction-pipe, D, in the bottom, and an upper bearing 'for the wheel-shaft, substantially as described.

3. Such a casing, in combination with a stufling-box, F, and elevated box or bearing for the wheel-shaft G, attached to the top plate A, substantially as set forth.

In testimony whereof I have signed my y name to this specification in the presence of tWo subscribing witnesses.

JOHN W. BOOKWALTER. Witnesses:

R. MASON, D. P. HOLLOWAYr