US1073467A - Vacuum-producing device. - Google Patents

Description

Patented Sept. 16, 1913.

Y M w m M e a We & J. BIRRELL.

VACUUM PRODUCING DEVICE.

APP&IOATION FILED MAR. 18, 1912.

WI T/VESSES:

' UNITED STATES PATENT OFFICE.

IBIBRELL AND JAMES BIRRELL, OF SEATTLE, WASHINGTON, ASSIGNOBS TO FRANK J. KOLMAN, TRUSTEE, OF SEATTLE, WASHINGTON.

VACUUM- PRODUCING DEVICE.

Specification of Letters Patent.

Patented Sept. 16, 1913.

To all whom it may concern:

Be it known that we, WILLIAM BI'RRELL and JAMES BIRRELL, citizens of the United States, residing at Seattle, in the county of King and State of'lVashington, have invented certain new and useful Improvements in Vacuum-Producing Devices, of which the following is a specification.

This invention relates to vacuum producing appliances of the ejector type, and is designed to provide an eiiicient device of this character which is adapted to be attached to a water faucet and which will operate with comparatively little noise.

With these and other objects in view, the invention consists in the novel construction and combination of parts, as will be herein after described and claimed.

The accompanying drawing is a vertical sectional view of a vacuum producing device constructed and arranged in accor ance with the present invention.

The shell or body 2 of the device is provided medially of its height with a conduit 3 which communicates with chambers 4 and 5 of greater diameters than the conduit and located at the top and bottom of the body.

6 represents a rubber thimble to receive the bib of a household faucet. Said thimble is provided with a peripheral flange 6 which serves as a gasket to make an airtight joint between said body and a glandnut 8 which engages screw threads provided on the body.

Extending from the chamber 4 and axially int-o said conduit is a nozzle 9. At a distance below the latter is an air inlet 10 extending through a ni pic 11 which is adapted to be coupled with a hose 12 wherethrough the air is sucked into the device when operating.

13 is a deflector or partition positioned within the chamber 5 and is of a conical shape with its apex protruding, desirably, into the mouth of the conduit. Said partition has a serrated periphery affording apertures 14 in juxtaposition to the circular wall of the chamber, or at the bottom of a gutter 15 formed between such wall and the conical partition. The partition, as illustrated in the view, is secured by being pressed into the chamber 5 though it may be otherwise secured, if desired.

When the faucet is o ened water fills the chamber 4 and is disc arged through the nozzle 9 against the apex of the partition 13 and is thereby deflected into gutter 15 and against the peripheral wall of the chamber 5. From this gutter the water escapes by falling through the holes 14 accompanied by air whence a partial vacuum is created within the conduit 3 to induce a suction in the tube 12.

Advantages of the present vacuum roducer reside in the fact that the water w ich performs the work of the device is discharged unaccompanied by noise and that the air is exhausted with an economical consumption of water.

What we claim, is

1. An aspirator comprising a conduit provided with a flaring mouth, a walled chamber of greater diameter than the conduit located therebelow and provided with a top substantially at right an les to its axis, a sharp pointed conical deflector serrated at its lower edge and frictionally engaging the side walls of the walled chamber to prevent displacement thereof and provide a restricted water passage and having its apex disposed within the flaring mouth.

2. An aspirator comprising a casing having a reduced medial portion provided with a lateral opening and enlarged cup-shaped ends, a sharp pointed conical deflector serrated at its lower edge adapted to be mounted in the lower end of the casing and held therein by frictional contact and having its apex extending into the lower end of the reduced medial portion.

Signed at Seattle, lVash, this 12th day of March, 1912.

WILLIAM BIRRELL. JAMES BIRRELL.

WVitnesses Hermon BARNES, E. PETERSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner 0! Patents.

Washington, D. C.

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