US735054A - Means for adjusting intermediate buckets. - Google Patents

Description

No. 735,054. PATENTED AUG. 4, 1903. O. D. H; BENTLEY.

MEANS FOR ADJUSTING INTERMEDIATE BUOKETS.

uruommx FILED APR. 22, 1903.

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Witnesses:

OHverD.H.BenLle JQLL' No. 735,054. Patented August 4, 190-3.

UNITED STATES PATENT OFFICE.

OLIVER H. BENTLEY, OF SOHENEOTADY, NEW YORK, ASSIGNOR TO GEN- ERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

MEANS FOR ADJUSTING INTERMEDIATE B'UCKETS.

SPECIFICATION forming part of Letters Patent No. 735,054, dated August 4, 1903.

Application filed April 22,1903- Serial No. 153,746. (No model.)

T ZZ wh m i m y conc rn: the outer end of the support 5, that carries Be it known that I, OLIVER D. H. BENTLEY, the intermediate buckets or fluid-discharging a citizen of the United States, residing at means 6. The groove is provided with walls Schenectady, in the county of Schenectady, located at right angles to each other, and the State of New York,haveinventedcertain new support for the intermediates is provided and useful Improvements in Means for Adwith one flat wall which engages with the justing Intermediate Buckets for Elasticcylindrical face of the groove and with op- Fluid Turbines, of which the following is a positely disposed and inclined or beveled specification. faces 7, with which the adjusting-blocks 8 6o 10 Elastic-fluid turbines of the jet type are engage. The adjusting-blocks are arranged provided with intermediate buckets located in pairs and preferably situated at or near between the adjacent rows of wheel-buckets the ends of the segmental support for the infor the purpose of properly directing the termediate, although additional blocks can v passage of motive fluid from one wheel to be used if desired. Each of the blocks is 5 I5 the next. Between the rows of wheels and provided with one fiat surface which engages intermediate buckets are small clearances with the wall of the groove in the casing and through which more or less steam escapes. with a beveled or inclined surface which en- 'lhese clearances are made as small as possigages with the corresponding surface on the I ble, frequently being as low as two, and at intermediate support. The blocks are re- 70 times as high as five, hundredths of an inch. tained in place by bolts 9, that are accessible It sometimes happens that it is necessary to from the outside of the casing, so that the inadjustthese clearances,either while the wheel termediates, which are located entirely wit bin is stationary or revolving, and itis preferable the casing, can be adjusted without opening to do this without opening the casing or shell the casing. This is particularly important 75 5 which incloses the working parts. where the turbineis connected toa condenser,

My invention has for its object to provide as it prevents the entrance of air. By rotata means whereby the intermediates can be ing the upper bolt backward and the lower accurately and finely adjusted in a direction bolt forward theintermediate bucket-support parallel to the wheel-shaft without opening 5 can be moved upward in a direction paral- 8o the inclosing casing, and this while the wheel lel to the axis of the wheel for the purpose of is revolving or stationary, as desired. adjusting the intermediate buckets with re- In the accompanying description and spect to the wheelbuckets. If it be desired claims appended thereto I have set forth with to lower the intermediate buckets, the reverse particularity what I believe to be novel and operation takes place. The wheel is provided 85 of my invention. with a web 10, having a peripheral flange, to In the drawings which are attached to and which the wheel-buckets 11 are secured. The made a part of this application, Figure l particular means employed for securing the shows an embodiment of my invention, the wheel-buckets in place forms no part of the said figure being a partial axial section of a present invention. It is sufficient that the 90 4o turbine. Fig. 2 is a partial plan view of a buckets be rigidly attached to the Wheel.

turbine on a somewhat smaller scale, and In Fig. 2 I have shown the intermediate Fig. 3 is a detail view showing the relation of buckets 6 as being arranged in groups and the attaching means to the sight-openings. each group provided with a segmental sup- 1 represents the wheel casing or shell, which port 5. The arc covered by the intermediates 95 is provided with a shoulder on which is seatwill vary with different kinds of machine.

ed the diaphragm 2. The diaphragm is pro- At each end of a segmental bucket-support Vided with a nozzle 3, which maybe expandis provided'a pair of adjusting blocks or ing or otherwise for imparting velocity to the wedges 8, whereby the intermediates can be fluid stream and discharging it against the adjusted as a whole in a direction parallel n: wheel-buckets. The casing is provided with with the wheel-axis or one end can be raised a circumferential groove 4, which receives slightly while the other is depressed. This independence of adjustment is desirable when the turbine is being assembled; but under ordinary conditions of service both ends of the intermediate would be adjusted by a corresponding amount and in the same direction.

In order to determine the exact relation between the intermediates and the buckets, I have provided small openings 12 in the casing, each of which is provided with a removable cover or plug 13. These openings are preferably situated opposite the line of division between adjacent segmental bucket-supports, so that the position of two of the supports can be observed through one opening. I have provided two openings for each segmental support.

I have illustrated my improvement in adjusting devices applied to one form of means for discharging fluid to a bucket-wheel; but obviously it is not limited to the particular form shown.

In accordance with the provisions of the patent statutes I have described the principle of operation of my invention, together with the apparatus which I now consider to represent the best embodiment thereof; but I desire to have it understood that the apparatus shown is merely illustrative and that the invention can be carried out by other means.

"What I claim as new, and desire to secure by Letters Patent of the United States, is

1. In an elastic-fluid turbine, the combination of a casing, a bucket-wheel, intermediate buckets and their support, and devices located within the casing and acting on opposite sides of the support for moving the intermediate buckets in a direction parallel to the wheel-axis.

2. In an elastic-fluid turbine, the combination of a casing, a bucket-wheel mounted therein, intermediate buckets situated ,within the casing and between rows of wheelbuckets, ad justin g-blocks located within the casing for moving the intermediate buckets in a direction parallel with the wheel-shaft, and means extending through the casing for moving the blocks.

3. In an elastic-fluid turbine, the combination of a casing, a bucket-wheel mounted therein, intermediate buckets situated within the casing and between the rows of wheelbuckets, a pair of adjusting devices engaging with opposite sides of the intermediates for adjusting them, and means for moving the said devices.

4. An elastic-fluid turbine comprising a casing, a wheel having rows of buckets, andintermediate buckets situated between the rows of wheel-buckets, in combination with a support for the intermediate buckets, and adj usting-blocks which engage therewith, the said support and blocks having an inclined surface between them.

5. An elastic-fluid turbine comprising a casing, a wheel having rows of buckets, and segmental intermediate buckets located between the rows of wheel-buckets, in combination with adjusting blocks arranged in pairs at opposite ends of each segmental intermediate.

6. An elastic-fluid turbine comprising a casing, a wheel having rows of buckets, segmental intermediate buckets located between the rows of wheel-buckets, a support for the intermediates having beveled or inclined surfaces, adjusting-blocks arranged in pairs on opposite sides of the support and located near the ends thereof, and means for adjusting the blocks from a point outside of the casing.

'7. An elastic-fluid turbine comprising a casing, a wheel having rows of buckets, segmental intermediate buckets located between the rows of wheel-buckets, in combination with adjusting-blocks for moving the intermediate buckets in a direction parallel to the wheel-axis, and a sight-opening formed in the casing having a detachable cover through which the position of the intermediates can be observed.

.8. In an elastic-fluid turbine, the combination of a casing, a bucket-wheel having rows of buckets, intermediate buckets arranged in segments, and a sight-opening located in the casing adjacent to the line of division between the adjacent segmental intermediates.

9. In an elastic-fluid turbine, the combination of a bucket-wheel, a casing therefor having a groove, intermediate buckets, a support for the buckets mounted in the groove, and adjusting-blocks which engage with a wall of the groove and with the support.

10. In a turbine, the combination of acasing, a bucket-wheel mounted therein, means for discharging fluid to the wheel-buckets located within the casing, and wedges for adjusting said means.

In witness whereof I have hereunto set my hand this 18th day of April, 1903.

OLIVER D. H. BENTLEY.

Witnesses:

ALEX. F. MACDONALD, HELEN ORFORD.

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