US711965A - Pump. - Google Patents

Description

. Patented Oct. 28, I902. E. E.HENDBICK.

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(Application flied. may 29, 1901.)

2 Sheets-Sheet (No. Model.)

Inventor -W1'tnesses Attys.

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V Inventor I Attorneys UNITED STATES PATENT OFFICE.

ELI E. HENDRIOK, OF CARBbNDALE, PENNSYLVANIA.

PUMP.

SPECIFICATION forming part of Letters Patent No. 711,965, dated October 28, 1902.

Application filed May 29, 1901.

To all whom it may concern:

Be it known that I, ELIE. HENDRIOK, acitizen of the United States, residing at Carbondale, in the county of Lackawanna and State of Pennsylvania, have invented a certain new and useful Improvement in Pumps, of which the following is a description.

This invention relates particularly to that class of pumps in which are employed a. casing, either continuous or formed in sections, a shaft within the casing driven by a suitable motor, and propellers mounted at intervals upon such shaft for the purpose of elevating water or other liquid within the casing. In pumps of this type it is essential that the rotary shaft be provided, preferably at points adjacent to the propellers, with means for centering it within the casing, and since the shaft,its centering mechanism, and propellers are assembled and then forced bodily into the pump-casing it has been customary to so construct such mechanism as that it will maintain its position by coaction with the interior of the pump-casing.

Heretofore it has been proposed to employ for the purpose of centering a pump-shaft and guiding the water within the casing a combined bearing and guide comprising a hub and outwardly-extending, curved,'aud resilient arms or vanes, the latter when free from the pump-casing being of greater diameter than such casing, but being compressed or sprung in in order to permit the pump-shaft and its attached mechanism to be inserted in position. In this construction the outwardlyextending arms or vanes are designed not only to support the bearing and center the shaft, but also to guide the water within the pump-casing and to prevent the same from swirling. The construction thus described has proved defective in several respects, among which are the following: Where several arms or vanes are employed upon each bearing, it is of the utmost importance that the material employed in all of these be of the same quality, degree of resiliency, &c.; otherwise the bearing and the shaft passing through it will not be accurately maintained in the center of the casing. Again, where such arms or vanes are curved as well as resilient they frequently fail to remain rigid in the pump-casing while the shaft is in operation, but, on the contrary, are caused to reerial No. 62,306. (No model-l volve with such shaft, thereby becoming so worn as to no longer support the shaft in the true center of the casing. In the present invention these objections to and defects in preexisting structures are removed. In such invention is employed a combined water-guide and shaft-centering mechanism comprising a hub or bearing having outwardly-extending arms, certain of which are non-resilient and are of such length as that when their free ends are in contact with the interior of the casing the hub or bearing shall be in the center of the pump-casing. Another arm (although there may be more than one) extends outwardly from the hub and is so formed as to exert yielding pressure against the interior of the casing, thereby forcing the arms first named into contact with the casing upon the other side of said hub and fixing the position of said hub in the center of the casing.

In a preferred embodiment of the invention I construct the guide and bearing of cast metal, forming two of the arms integral with the hub. I further provide the hub opposite said rigid arms with spring-arms, preferably of steel or other resilient metal and curved in opposite directions. At their inner ends the latter are rigidly secured by any suitable means to the hub, while their free ends are so arranged as to bear some distance apart against the interior of the pumpcasing, thereby pressing the integral guide-arms against the interior of the casing and maintaining the hub or bearing in the exact longitudinal center of the pump.

The invention is illustrated in the accompanying drawings, in which Figure 1 is a horizontal section, and Fig. 2 a longitudinal section, of a portion of a pumpcasing with my improved guide and bearing located therein.

Referring to the figures, in which similar letters denote corresponding parts, A designates the pump-casing, and B the shaft located therein. Thisshaft is provided at suitable intervals throughout its length with bearings comprising a hub C, which may have an internal recess or chamber c-for the reception of a suitable lubricant. It may also, if desired, be provided with an internal core or bushing (not shown) of high-fusion metal or other suitable material.

Extending outwardly from the hub O (in the present instance radially) are two arms D D. As here shown, the hub O is cast about the inner ends of the arms D; but it is obvious that the latter may be secured to the hub in any other suitable manner. The arms D are of such length that when their free ends are in contact with the interior of the casing the hub O is in the exact longitudinal center of the pump-casing.

On the opposite side of the hub from the arms D are arranged curved resilient arms E, (in this instance two,) the iunerends of which are secured to the hub 0, (preferably by casting such hub about such ends,) while their free ends extend outwardly in such position as to make contact with the interior of the ,casing, and when making such contact these arms exert yielding pressure against the hub C, and therefore against the arms D, so as to maintain the former in the longitudinal center of the pump-casing and the latter in intimate contact with the interior of such casing. As here shown, the arms E bear against the interior of the casing at Isomewhat distant points, such arms being curved in opposite directions. Due to this construction the tendency of the combined guide and bearing to turn within the casing under the influence of the rotary shaft is minimized. The water which is set in swirling motion by the action of the propellers is interrupted and forced to pass upwardly within the casing either in a true perpendicular or with a tendency to movement in a direction opposed to its direction before reaching the guides.

Although I have illustrated and described the arms D as radial and substantially perpendicular, I do not desire to be limited in this respect, for such arms may, if desired, be inclined or curved.

What I claim is 1. In a pump, the combination with a casing, of a shaft having propellers mounted thereon,hubs through which said shaft passes, arms extending from said hub and coacting with the interior of said casing, and two arms secured together at said hub and exerting yielding pressure against the interior of said casing, substantially as set forth.

2. In a pump, the combination with a casing, of a shaft having propellers mounted thereon,hubs through which said shaft passes, arms extending from said hub and coacting with the interior of said casing,and two springarms secured together at said hub and exerting yielding pressure against the interior of said casing, substantially as set forth.

3. In a pump, the combination with a casing, ofa shaft having propellers mounted thereon,hubs through which said shaft passes, arms extending radially from said hub and coacting with the interior of said casing and two curved spring-arms secured together at said hub and exerting yielding pressure against the interior of said casing, substantially as set forth.

4. In a pump, the combination with a casing, of a shaft having propellers mounted thereon,hubs through which said shaft passes, arms extending from said hub and coacting with the interior of said casing and two curved spring-arms secured together at said hub and exerting yielding pressure against the interior of said casing, substantially as set forth.

5. In a pump, the combination with a casing, of a shaft having propellers mounted thereon,hubs through which said shaft passes, arms extending from said hub and coacting with the interior of said casing and two arms curved in opposite directions and secured to said hub and exerting yielding pressure against the interior of said casing, substantially as set forth.

6. In a pump, the combination with a casing, of a shaft having propellers mounted thereon,hubs through which said shaft passes,

arms extending from said hub and coacting with the interior of said casing and two resilient arms curved in opposite directions and secured to said hub and exerting yielding pressure against the interior of said casing, substantially as set forth.

7. In a pump, the combination with a oasing, of a shaft having propellers mounted thereon,hubs through which said shaft passes, arms extending from said hub and coacting with the interior of said casing and two arms secured together at their point of attachment to said hub, their free ends being separated and coacting with the interior of said casing, substantially as set forth.

8. In a pump, the combination with 2. casing, of a shaft having propellers mounted thereon,hubs through which said shaft passes, arms extending from said hub and coacting with the interior of said casing and two resilient arms secured together at their point of attachment to said hub, their free ends being separated and coacting with the interior of said casing, substantially as set forth.

This specification signed and witnessed this 27th day of May, 1901.

ELI E. HENDRIOK.

WVitnesses:

J. R. VANDERFORD, L. M. SMITH.

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