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Publication numberUS644475 A
Publication typeGrant
Publication dateFeb 27, 1900
Filing dateJun 12, 1899
Priority dateJun 12, 1899
Publication numberUS 644475 A, US 644475A, US-A-644475, US644475 A, US644475A
InventorsWilliam S Sharpneck
Original AssigneeJohn D Ross, Everett W Brooks, William S Sharpneck
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Centrifugal pump.
US 644475 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

Patented Feb. 27, |900.


(Application mea June 12, 1899.)

(N-o Modal.)

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SPECIFICATION forming part of Letters Patent No. 644,475, dated February 2'?, 1900.

Application filed .Tune l2, 1899. Serial. No. 720,289. (No model.)

To all whom t may concern:

Be it known that LWILLIAM S. SHARPNECK, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Centrifugal Pumps, of which the following is a specification, reference be'- ing had to the accompanying drawings.

This improvement relates to that class of lo centrifugal pumps which have a vertical shaft; and its object is to provide a pump of this class that will be cheaply made, rapid in work, easy to operate, and not likely to get out of order.

To these ends the invention consist-s in the peculiar construction hereinafter more particularly described and then difinitely claimed at the end hereof.

In the accompanying drawings, Figure l is 2o a vertical central section of a pump constructed according to my improvement. Fig. 2 is a horizontal section through the center of the revolving cylinder. Fig. 3 is a reversed plan of the same.

Referring now to the details of the drawings by letters, a is the casing, provided with a base b, in which is secured the vertical suetion-pipe c, and a horizontal,discharge-pipe d projects from one side of the casing. At the 3o top of the casing is a cap e, securely bolted thereto, in which runs the shaft f, having a collar g secured on itby a set-screw. Above this collar is set a band-pulley h for giving motion to the shaft f. The lower part of the shaft runs through a stuffing-box t', so as to be water-tight, and on the bottom of such shaft is hung the revolving cylinder j, which is perforated for the passage of the water and is provided with a partition 7e, whose bottom 4o is preferably brought down to a knife-edge,

as shown in Figs. l and 3.

The bottom of the revolving chamber terminates in a neck l, which is in line with a corresponding neck m, rising in the interior of the casing. These two necks should be nicely fitted together, so as to run with but little, if any, friction, which can be arranged by properly adjusting the collar g. In some cases I may secure to the neck Z a packingring n by a band o, which ring will drop around the neck n, and the pressure of the water around it will keep the joint perfectly tight; but this packing is not essential in all cases'.

The object of the partition is to prevent the cylinder from running around over the water, and thus Wasting power, for the partition drives the Water outward and the centrifugal force forces it through the holes in the periphery of the cylinder into the casing and then through the discharge.

The outside of the cylinder is intended to be turned smooth, so as to run with but little friction in the water in the casing.

What I claim as new is- 1. The combination of the vertical casing c, provided with an outlet d, base b having a central opening, and a neck m, with a revolving perforated cylinder j having a neck Z and a partition 7e extending into the neck, substantially as described.

2. The combination of the vertical casing c having a base b, neck m, and a cap e provided with a stuffing-box on its under side and a bearing formed in an extension of said cap e with a revolving perforated cylinder having a neck Z and a packing-ring n attached to one of said necks and embracing the other, substantially as described.

3. The combination in a centrifugal pump, of the vertical casing c having a suction-pipe c, discharge-pipe d, cap e and neck m, with the vertical shaft f runniugin said cap, the adjustable collar g mounted on said shaft, the perforated revolving vertical cylinder car'- ried thereby having a partition 7c, a neck Z surrounding the inlet into the cylinder and a band n fast on said neck Zand loosely inclosing the neck m, all substantially as described and shown.

In testimony whereof I affix my signature, in the presence of two witnesses, this 9th day of June, 1899.




Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3487784 *Oct 26, 1967Jan 6, 1970Edson Howard RaffertyPumps capable of use as heart pumps
USRE28742 *Jan 3, 1972Mar 23, 1976 Pumps capable of use as heart pumps
Cooperative ClassificationF04D1/12