US1016199A - Rotary pump, rotary engine, and the like. - Google Patents

Description

W. AQBBARD. ROTARY PUMP, ROTARY ENGINE, AND THE LIKE.

APPLICATION FILED AUG. 8, 1910. 1 ,016,]; 99, Papented Jan. 30, 1912.

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W. A. BEARD, ROTARY PUMP, ROTARY ENGINE, AND THE LIKE. APPLICATION FILED AUG. 8, 1910.

1,016,199, Patented Jan'.30,1912

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WILLIAM A. BEARD, OF LONDON, ENGLAND.

ROTARY PUMP, ROTARY ENGINE, AND THE LIKE.

Specification of Letters Patent.

Patented Jan. 30,1912.

Application filed. August 8, 1910. Serial No. 576,369.

To all whom it may concern:

Be it known that I, WILLIAM ARTHUR BEARD, a subject of the King of Great Britain and Ireland, and a resident of London, England, have invented a new and useful Improvement in and Relating to Rotary Pumps, Rotary Engines, and the Like, of which the following is a full, clear, and exact specification.

This invention relates to rotary pumps and engines of the type wherein rotary drums are arranged within a casing one being provided with vanes for carrying the fluid, in the case of a pump, from the inlet to the outlet side of the casing and the other or others acting as a rotary abutment drum or drums and being provide-l with recesses adapted to be engaged by the vanes as they pass from the outlet to the inlet side.

The main object of the present invention is to provide a pump which, for its weight and simplicity in construction, is adapted to pass a comparatively large quantity of fluid.

A further object is to provide a simple form of pump in which the leakage between the outlet and inlet sides is minimized and does not increase when the parts of the pump are worn.

The invention comprises a casing surrounding rotary drums having intermeshing.

teeth thereon extending completely around their peripheries, recesses extending part way across one of the drums, vanes on another drum adapted to engage the recesses, and inlet and outlet openings in the casing allowing of a direct flow of fluid.

The invention also comprises a casing, a toothed drum mounted therein and provided with vanes, and a plurality of recessed drums, arranged between and on the same side of the inlet and outlet, forming abutment members and also provided with teeth, the recesses of the abutment drums being adapted to be engaged by the vanes and so arranged that when a vane is in engagement with a recess on one of the abutment drums the teeth on another abutment drum are in engagement with the teeth on the vane drum. With this arrangement having a plurality of rotary abutment drums the teeth are preferably arranged so that portions thereof are always in gear and, except when a recess in an abutment drum is passing the vane drum, the teeth are in engagement throughout their whole width, whereby the teeth serve the double purpose of gearing the drums together and preventing leakage even when they become worn.

The'drums may be of any convenient size, the recesses and vanes being arranged accordingly.

Referring now to the accompanying drawings; Figure 1 is a sectional elevation of a pump constructed according to the invention and having a single rotary abutment drum, Fig. 2 is another sectional elevation taken on the line 22 of Fig. 1; Fig. 3 is a sectional elevation of a pump also constructed according to the invention and having two rotary abutment drums; and Fig. 4 is a sectional elevation at right angles to Fig. 3 and taken on the line 4.4 in said figure.

Referring first to the form shown in Figs. 1 and 2, the drums at and b which may be called the vane drum and valve or abutment drum respectively, are mounted in bearings of any suitable construction in the casing 0. The drums are preferably of the same diameter and are geared together by means of the teeth d and 6 extending across the whole Width of the drums. The drum a is provided with any convenient number of blades f, two being usually sufficient, slightly smaller in width than the drum as clearly shown in Fig. 2. A corresponding number of recesses g are provided in the drum 6 of the same width as, and adapted to be engaged by, the vanes f as they pass from the outlet to the inlet side of the pump. The pump may be driven in either direction by the shaft it, one of the openings m acting as inlet and the other as outlet for the fluid. The tops of the teeth 6 on the valve drum 5 are made to run as closely as possible to the casing as also are the tops of the vanes f and, if desired, packing strips may be used for the latter. The portions of the drums across which the vanes f and recesses 9 do not extend (shown at n on Fig. 2) are always in gear thereby keeping the two drums in synchronous rotation even while the vanes f are engaging the recesses g. The width of the portions n is preferably as small as possible consistent with the driving strength required. The casing c is very simple in construction consisting of two parts 0 and p bolted together either by continuous flanges or by a series of lugs arranged around the peripheries. The casing is, of course, narrowed around its lower part as shown at g,

Fig. 2, in order to prevent leakage or' the fluid past the vanes. hen the pump is in operation, a certain amount of fluid is carried around from the inlet to the outlet between each pair of the teeth 6 thus adding to the eliiciency of the pump.

Referring now to the form shown in Figs. 3 and l the vane drum a, and the rotary abutment drums b and b are mounted in bearings of any suitable construction in the casing the abutment drums being both mounted on the same side of a line joining the inlet and outlet openings of the casing and preferably as close together as possible. In the example illustrated the vane drum, a, is twice the diameter of each of the abutment drums, b and Z) and is provided with two vanes f. A recess is provided in each of the abutment drums and are shown at g and g on the drums b and Z), respectively, said recesses being of the same width as, and adapted to be engaged by, the vanes, 7, as they pass from the outlet to the inlet side of the pump. The pump may be driven in either direction by the shaft it, one of the openings m acting as inlet and the other as outlet for the fluid.

For simplicity the casing is preferably made in two portions, 0 72 bolted together either by continuous flanges or by a series of lugs arranged around the peripheries. When the drums are geared together by teeth on the drum peripheries as described above, the lower part of the casing is narrowed as shown at g, Fig. l, in order to prevent leakage of fluid past the sides of the vanes.

In the operation of the device illustrated, whenever a vane, f, is in engagement with the recess 9, in theabutment drum, 6, any fluid which leaks past the tip of said vane is prevented from leaking between the other abutment drum 6, and the vane drum owing to the fact that the recess g in the abutment drum, 6 is not at this time in proximity to the vane drum and the drums b and a, are in rolling contact, by means of teeth. Similarly if the pump is running in the opposite direction any fluid which leaks past a vane in engagement with the recess 9 is prevented from leaking between the abutment drum, 6, and the vane drum.

It is to be understood that the various details in the construction in either form of pump may be modified to suit the size of the apparatus, the conditions under which it is to work, and the purpose for which it is employed. For example, the relative sizes of the vane drum and abutment drum or drums may be modified as desired, the number of vanes and the number of recesses in the abutment drum or drums being modified to suit. It is also to be understood that although the apparatus has been described as a pump it may be used conversely as an engine or motor using liquid or a gas, for example steam, as the driving medium.

Having now described my invention what- I claim as new and desire to secure by Letters Patent is l. A rotary pump, rotary engine or the like comprising a casing, a. rotary drum therein provided with vanes extending part way across it, another rotary drum provided with corresponding recesses adapted to be engaged by said vanes, and intermeshing teeth extending completely around the peripheries of said drums.

2. A rotary pump, rotary engine or the like comprising a casing, a rotary drum therein provided with vanes extending part way across it, the tops of which are at substantially the same radius from the center as the internal radius of the corresponding part of the casing, another rotary drum provided with corresponding recesses adapted to be engaged by said vanes, and intermeshing teeth extending completely around the peripheries of said drums, the tops of the teeth on the recessed drum being at substantially the same radius as the internal radius of the corresponding part of the casing.

3. A rotary pump, rotary engine or the like comprising a casing, a rotary drum therein provided with vanes extending part way across, another rotary drum provided with corresponding recesses, and intermeshing teeth extending completely across said drums.

4. A rotary pump, rotary engine or the like comprising a casing, toothed drums mounted therein and provided with intermeshing teeth extending completely around their peripheries, vanes extending part way across one of said drums, corresponding recesses in the other, and inlet and outlet openings arranged to allow of a direct flow of the fluid.

5. A rotary pump, ,rotary engine or the like comprising a casing, a rotary drum therein provided with vanes extending part way across it, a plurality of other rotary drums arranged between and on the same side of the inlet and outlet and provided with corresponding recesses adapted to be engaged by said vanes, and intermeshing teeth extending completely around the peripheries of said drums, the recesses being arranged so that when a vane is in engagement with a recess in one of the recessed drums the teeth on another recessed drum are in engagement with the teeth on the vane drum.

6. A rotary pump, rotary engine or the like comprising a casing a rotary drum therein provided with vanes, extending part way across, a plurality of correspondingly recessed rotary drums arranged between and on the same side of the inlet and outlet openings, and intermeshing teeth extending In testimony whereof I have hereunto completely across said drums, the recesses signed my name to this specification in the being so arranged that when a vane is in presence of the two subscribing witnesses.

engagement with a recess in one of the re- W. A. BEARD. cessed drums the teeth on another recessed Witnesses:

drum are in engagement with the teeth on WALTER J. SKERTEN,

the vane drum. W. J. Nonwoon.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

- Washington, D. G.

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