US375948A - Jambs pocknell - Google Patents

Description

(N0 Model.)

J. POGKNELL.

AUTOMATIC GUT-OFF FOR WATER TANKS.

188875.948. Patented Jan. 8, 1888.

"iliiiinmfi l WI ESSES: INVENTOR:

v v ATTORN YS.

UNITED STATES PATENT OFFICE.

JAMES POOKNELL, OF JERSEY CITY, NEYV JERSEY.

AUTOMATIC CUT-OFF FOR WATER-TANKS.

SPECIFICATION forming part of Letters Patent No. 375,948, dated January 3, 1888,

Application filed May 16, 1587. Serial No. 238,395.

To all whom it may concern.-

Be it known that I, JAMES POCKNELL, of Jersey City, in the county of Hudson and State of New Jersey, have invented a new and Improved Automatic Cut-Off for Water-Tanks, of which the following is a full, clear, andexact description.

The object of my invention is to stop a pump which is discharging into a tank when the latter is full.

The invention consists ofa bucket supported on one end of a bell-crank lever, and in which discharges the overflow-pipe of the tank, of a weighted bell-crank lever connected with said first bell-crank lever and provided with a catch, and of a weight hung on the said catch and adapted to actuate a lever connected with the valve of the steam-supply for the pump or with ashifting-lever connected with the driving-belt of the pump.

The invention also consists of certain parts and details and combinations of the same, as will be fully described hereinafter, and then pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in both figures.

Figure l is a perspective view of my improvement as applied to the valve of a steamsupply pipe, and Fig. 2 is a side elevation of a part of my improvement as applied to a shiftinglever.

The steam-supply pipe A, connected in the usual manner with the steam-pipe, is provided with the valve B, carrying the valve-wheel O for opening and closing said valve. The lever D is connected either permanently or temporarily with the spokes of said wheel 0, and the outer end of said lever D is connected by a chain, E, with the weight F, supported by a chain, G, carrying on its upper end a hook, H, adapted to be hung overacatch, 1, formed on the weighted lever Lfulcrumed on a bracket, J, secured to awall or to the steam-supply pipe A, as shown in the drawings. The weighted lever I is provided with the upwardly-extending arm I", connected by the rope or rod K with one arm of the bell=crank lever L, pivoted in the tank N, and supporting on its other arm the bucket 0, into which dis- (No model.)

charges the telltale pipe P, connected with the tank into which the water is pumped by the pump connected with the steani'snpply pipe A. The bucket O is held inside of the tank N, and is provided with a small aperture in its bottom. Thewaste-pipe Q leads from the tank to any desired place.

The operation is as follows: When sufficient water has accumulated in the bucket 0 from the tell-tale pipe P to overcome the weighted lever I, then the bucket O swings downward, and thereby causes the lever I to swing in the direction of the arrow to, so that the hook H is disengaged from the catch 1 and the weight F falls down, exerting a pressure upon the outer end of the lever D, which just turns the wheel 0, whereby the valve B is closed and the steam in the pipe A is shut off from the pump, which thus ceases to rotate. The water discharged by the bucket 0 passes into the tank N and out of the same to any convenient place through the waste-pipe Q. Now, it will be seen that the engineer in charge of the steampump is thus notified, as soon as the weight F drops and the valve B is closed, that the tank into which his pump discharges isfull. The pump is again started by the engineer whenever it is necessary, and the lever D is placed in its former position and the hook His again hung on the catch l of the weighted lever 1,

whereby said lever pulls the bell-crank lever' L and its bucket 0 into the former position, ready to receive the water from the tell-tale pipe P. The hook J on the bracket J forces the hook H off of the catch 1, when the latter moves toward the rear, as above described.

Instead of connecting the chain E with the lever D, as before described, I may also connect said chain with a bell-crank lever, B, piv otally connected with the shifting-leverS, operating on the driving-belt, which imparts motion to the steam-pump. The operation in this case is the same as above described, the only difference being that the weight F,pulling on the bell-crank lever R, moves the lever S, so that the latter shifts the belt'from the tight pulley to the loose pulley, whereby the working of the pump is stopped.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent- 1. In an automatic cut-off, the combination, with a bucket supported on a bell-crank lever, of a weighted bell-crank lever connected with said bucket lever, a catch formed on said Weighted lever, a hook adapted to be hung on said catch, a weight supported by said hook, and a lever connected with said weight and adapted to operate either the stealninlet valve or the shifting-lever for the driving-belt, substantially as shown and described.

2. In an automatic cut-off, a bucket into which the tell-tale of a water-tank discharges, and a bell-crank lever supporting said bucket on one arm, in combination with a weighted bell crank lever connected with the other arm of said bell-crank lever supporting the bucket, a bracket having a hook on which said weighted bell-crank lever is pivoted, a catch formed on said weighted bell-crank lever and extending near said hook of the bracket, a hook adapted to be hung on said catch, a weight supported by said hook, and a lever connected with said weight and adapted to operate either the steaminlet valve or the shifting-lever for the main driving belt of the pump, substantially as herein shown and described.

JAMES POOKNELL.

, Witnesses:

FRANK F. RUGGLES, JOHN \VRIGHT.

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