US130146A - Improvement in rotary pumps - Google Patents

Improvement in rotary pumps Download PDF

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Publication number
US130146A
US130146A US130146DA US130146A US 130146 A US130146 A US 130146A US 130146D A US130146D A US 130146DA US 130146 A US130146 A US 130146A
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Prior art keywords
cylinder
improvement
blades
rings
rotary pumps
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Expired - Lifetime
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01CROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08Rotary pistons
    • F01C21/0809Construction of vanes or vane holders
    • F01C21/0818Vane tracking; control therefor
    • F01C21/0827Vane tracking; control therefor by mechanical means
    • F01C21/0836Vane tracking; control therefor by mechanical means comprising guiding means, e.g. cams, rollers

Description

UNITED STATES NATHAN E. NASH, OF PROVIDENCE, RHODE ISLAND.

IMPROVEMENT IN ROTARY PUMPS.

- Specification forming part of Letters Patent No. 130,146, dated August 6, 1872.

To all whom it may concern:

Be it known that I, NATHAN E. NASH, of the city and county of Providence, in the State of Rhode Island, have made certain new and useful Improvements in Pumps or Blowers, and I do hereby declare that the following specification, taken in connection with the drawing making a part of the same, is a full, clear, and exact description thereof.

Figure 1 is a view of a pump or blower in elevation. Fig. 2 is a section of same, with a portion removed, on line 00 m. Fig. 3 is a section on line 3 y. Fig. 4 is a section view of the piston, showing the buckets attached to the rings. Fig. 5 shows a side and section view of the rings.

My improvements relate to what is known as a rotary pump or blower; and consists in the manner of constructing and actuating the blades, and in theuse of a packing in connection therewith, as hereinafter described.

In the rotary pumps now in use the cylinder A, which revolves within and eceentrically to the hollow cylinder B, is provided with blades 0 and c, which are actuated by springs, the whole being constructed and operating in amanner well understood. The blades, when actuated from the inner ends by a spring in the usual way, will of course bear harder upon the circumference of the cylinder B at certain points than at others, which tends to wear the cylinder into what might be called an egg shape. For instance, the blade 0, as shown in Fig. 2, has reached its most extended position, and as it moves upward and is forced back into the cylinderA its pressure upon the inner circumference of the cylinderB is much greater than during the other half of its revolution.

To overcome this difficulty I dispense with all springs and make use of two circular rings, at d, at each end of the cylinder B, to which rings I hinge the blades 0 and c at both ends. It will now be readily seen that the rings d and d will revolvegvith the cylinder A and within the cylinder B, and will actuate the blades the same as the spring, and at the same time preserve the cylinder from wear at any particular point and allow it to retain its exact circular shape.

In the pumps now in use the blades have been allowed to come in contact with the inner circumference of the cylinder B, so that whenever they become worn from constant use, in order to repair the blades or supply new ones, it became necessary to take the pump to pieces. In my invention I make the edge of the blade of suitable shape to receive a packing, c, which is held sufiiciently secure between the blade and the cylinder, and may be put in or taken out by simply removing the end cap and rings d and d whenever a new packing is required.

What I claim as my invention, and desire to secure by Letters Patent, is

1. The blades, actuated from their outer ends by means of the rings d and d, in the manner substantially as described, for the purposes specified.

2. The combination of the cylinders A and B and the rings d and d, the whole constructed and operating together in the manner substantially as described, for the purposes specifled.

NATHAN E. NASH.

Witnesses:

WALTER B. VINCENT, JonN DEW. TAYLOR.

US130146A Improvement in rotary pumps Expired - Lifetime US130146A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050224596A1 (en) * 2003-07-08 2005-10-13 Panopoulos Peter J Machine that is an automatic pesticide, insecticide, repellant, poison, air freshener, disinfectant or other type of spray delivery system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050224596A1 (en) * 2003-07-08 2005-10-13 Panopoulos Peter J Machine that is an automatic pesticide, insecticide, repellant, poison, air freshener, disinfectant or other type of spray delivery system

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