US2601950A

US2601950A - Measuring pump counter

Info

Publication number: US2601950A
Application number: US194260A
Authority: US
Inventors: Virgil A Brunson
Original assignee: BLACKMER PUMP CO
Current assignee: BLACKMER PUMP CO
Priority date: 1950-11-06
Filing date: 1950-11-06
Publication date: 1952-07-01
Anticipated expiration: 1969-07-01

Description

y 1, 1952 v. A. BRUNSON 0 MEASURING PUMP COUNTER Filed Nov. 6, 1950 \NVENTOP. \luzen. A. Bxzunsow ATTORNEYS Patented July I, 1952 MEASURING PUMPCOUNTER Virgil A. Brunson, Grand Rapids, Mich, assignor Blackmer Pump Company, Grand Rapids,

I Mich., a corporation of Michigan Application November 6, 1950, SerialNo. 194,260 v 4 Claims. (01. 235-94) This invention relates to a novel counter operating mechanism, the purpose of which is to have always ready for observation the number of rctations of the shaft of a rotating vane pump which pump, with each rotation of the shaft, discharges a metered quantity of liquid; or,'as an alternative, an indicator showing the quantity of liquid pumped. It is a primary object of the present invention to provide a counting mechanism which may be readily attached or detached from a measuring pump without in any way altering the pump structure so that the pump may be used either with or without the counter depending upon the desires or requirements of the user.

An understanding of the invention may be had from the following description, taken in connection with the accompanying drawing, in which:

Fig. 1 is an end view of the pump, at which end the invention is applied, parts of the counter actuating means being broken away for better disclosure of structure and,

Fig. 2 is a fragmentary, generally horizontal section substantially on the plane of line 2-2 of Fig. 1.

Like reference characters refer to like parts in the different figures of the drawing.

The casing of the pump l, in which the rotor is mounted, has at an end thereof a projecting boss 2, beyond which an extending end portion 3 of the rotor shaft extends. Shaft 3, adjacent its ends, is preferably flattened at both sides to make opposed parallel flattened surfaces 4. A handle 5 for manual operation of the shaft to turn it is provided with an opening to correspond with the cross section of the flattened outer end of the shaft, to fix the handle to the shaft by means of a securing nut as shown. Such pump structure, old in itself, and which with each rotation of the shaft discharges a metered quantity of liquid, is the environment in which my invention is used, but in itself is not new.

In my invention, a cylindrical sleeve 6, having a diameter greater than the diameter of the boss 2, and having a length somewhat longer than the distance the boss projects outwardly, is detachably secured by screws or otherwise to the end of the pump casing atwhich the handle is located. At one side it has an opening at which the outer indicating face of a counter 1 is located, such counter being detachably secured to the boss 2 preferably by screws. The counter has a rotatable shaft 8 at the outer end of which is a star wheel 9 shown as having five equally spaced radiating vanes, which number may be varied.

The sleeve 6, open at its outer end and extending slightly beyond the star wheel 9, is covered by a sheet metal cap III, which, likewise, has an opening centrally thereof conforming to and for the passage of the flattened end section of the shaft 3. Such cap I0 is located at the inner side of the handle 5 and comes against the shoulders at the inner ends of the flattened portions 4 so that, when the outer clamping nut is tightened, the cap 10 is securely but detachably connected with the shaft 3 and turns therewith. The cap II] has a peripheral flange which close]; surrounds the end of the sleeve 6 to prevent entrance of extraneous matter.

From the sheet metal cap 10 spaced tongues I I are struck inwardly at the proper radial distance from the center of the shaft 3 that, as the cap in is turned with the shaft 3, the successive tongues H engage the radiating vanes of the star wheel one after the other. As shown there are the same number of tongues ll struck from the cap ID as there are vanes in the star wheel. Such equalization of the number of tongues H with a like number of vanes on the star wheel, however, is not an essential requirement of the invention, as the number of each may be varied.

The manufacturer of these pumps has demands for pumps both with and without the counting mechanism. And the purchaser of the same pump may desire to use it at times with the counter and at other times without it. With the present structure the pumps may all be made alike with the boss with a screw hole on the casing to which the sleeve 6 can be attached, and with the seat and screw holes on the shaft boss 2 for attaching the counting device.

The pumps may be sold as above without the counting mechanism to such customers as desire it that way, but when the cutomer desires the counting mechanism the sleeve 6 may be attached to the pump casing, the counting device screw connected to the boss 2 and the cap [0 placed on the shaft 3 under the hand crank 5 and clamped in place by the nut which holds the crank in place, and the pump is then complete with counter and weather protecting shield without changing the basic pump structure.

When a customer has bought a pump without a counter the parts 6, I and I0 may be later furnished him so that he can himself apply them to the pump without alteration, simply by the use of a wrench and screwdriver.

The counter and the operating star wheel therefor are housed within the sleeve 6 and the cap I at the outer end thereof. The structure is simple, but particularly effective for the purposes for which it is designed, easily manufactured at low cost and exceptionally satisfactory in operation.

, The invention is defined in the appended claims and is to be considered comprehensive of all forms of structure coming within their scope.

I claim:

1. The combination with a measuring pump having a casing and a rotatable shaft projecting from the case of an open ended sleeve surrounding said shaft, means for detachably connecting said sleeve to said casing, said sleeve having an open outer end, a counting device cletachably connected in fixed relation to said sleeve, a cap covering the open end of the sleeve, means for V detachably connecting said cap in fixed relation to said shaft for rotation therewith and cooperating means on said cap and said counting device for actuating said counting device upon rotation of said shaft and cap.

2. The elements of claim 1 in which said pump casing has a boss surrounding said shaft within said sleeve and said counting device is mounted on said boss within said sleeve and said sleeve has a window through which said counting device appears.

3. The elements of claim 1 in which said pump shaft has a hand crank with means for detachably connecting said hand crank to said shaft and said means for detachably connecting said cap 4 to said crank is the same means which connects said hand crank to said shaft.

4. The combination with a measuring pump having a casing, a boss on the casing, a rotatable crank projecting through said boss, a hand crank and means for detachably connecting said hand crank to said shaft of a sleeve surrounding said boss andhaving a window and an open outer end means for detachably connecting said sleeve to said casing, a counting device detachably connected to said boss and appearing through REFERENCE CI D The following references are of record in the file of this patent:

UNITED STATES PATENTS N m er a Da 252 6i fl .3mm "-7 an- 24, 18,82 635,139 Ro'rnbaek Oct. 17, .1399

1,739,914 Brubaker Oct. 8, 1929 Henson; Deb 3 1 50