US613246A

US613246A - Marcellus cole

Info

Publication number: US613246A
Authority: US
Publication date: 1898-11-01
Anticipated expiration: 1915-11-01

Description

UNITED STATES ATENT OFFICE.

MARCELLUS COLE, OF WASHINGTON, DISTRICT OF COLUMBIA, ASSIGNOR TO THE NATIONAL PLUNGER COMPANY, OF SAME PLACE.

TESTING-PLUG.

SPECIFICATION forming part of Letters Patent No. 613,246, dated November 1, 1898.

Application filed November 19, 1897. Serial No. 659,143. (No model.)

To all whom it may concern:

Be it known that I, MARCELLUS COLE, a citizen of the United States, residing at Washington, in the District of Columbia, have invented certain new and useful Improvements in Testing-Plugs; and Ido hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to certain improvements in testing-plugs by means of which the outlets of a system of sewer or soil pipes may be closed in order to apply the proper test to ascertain if the joints and connections of the system of pipes are tight.

The invention consists in the combination and arrangement of the various parts which constitute the plug and the relative arrangement of several plugs for testing purposes, as will be hereinafter more fully described, and particularly set forth in the claims.

The principal object of the invention is to provide an expansible plug capable of being employed in various positions in testing the tightness of the joints and connections of a system of sewer or other pipes. This object is attained by means of the mechanism illustrated in the accompanying drawings, in which- Figure 1 is a longitudinal sectional view of my improved testing-plug in its normal position; Fig. 2, a similar view showing the stopper expanded; and Fig. 3, a vertical sectional view of the upper portion of a system of subsoil-pipes, showing my improved plug employed for testing purposes.

Referring to the several views, the numeral 1 indicates a hollow shaft provided with a head 2 and externally screw-threaded its entire length to receive an expansible ovoidshaped stopper 3, a sliding head 4, and an internally-screw-threaded operating-sleeve 5. The sliding head is loosely mounted on the shaft and is provided on its inner side with a collar 6, adapted to fit or set into a correspondingly-shaped recess in the outer end of the stopper, and on its outer side with a rabbeted ilange 7, in the rabbet of which the inner end of the sleeve is adapted to set. The sleeve is externally provided with a squared surface 8 to receive the slotted end of a wrench and by means of which'the sleeve is operated to expand the stopper or restore it to normal position. The hole through the shaft 1 is square, and in order that sleeve 5 may be efficiently operated to expand the stopper I iit the square hole with a rod 9, which is provided with a suitable handle 10, by means of which the rod may be rigidly held to prevent the shaft 1 from turning while the sleeve is being turned to ex- A pand the stopper or restore it to normal position.

outer side with a collar 11, which is externally screw-threaded to receive a closing-cap 12, a packing-ring 13 being inserted between the head and cap to make a perfectly air or wa-Y with an aperture 15, through which the roundl portion of the holdin g-rod projects. The aperture in the cap being round, the rod is prevented from accidental displacement, as the square portion of the rod cannot pass through the aperture 15.

The numeral 16 indicates the upper portion of a subsoil-pipe having the usual outlet 17 at the top and provided with the usual sanitary, Ventilating, and closet inlet connections 18 19 20, respectively.

In order to test the tightness of the conn ections, I place one of my testing-plugs in the outlet end of the pipe, one in the inlet con- 'rhe head 2 of the Shaft is provided on asf nections, and 011e in the pipe throughthe sanitary connection. The stopper of each of these plugs is expanded by turning the sleeve with the wrench while the rod 9 is held by its handle. As the sleeve is turned the sliding head is forced inwardly, compressing the stopper longitudinally, and thereby expanding it laterally, or, in other words, increasing-e Y its diameter, so as to tightly fit and seal the pipe or connection at the point of location.

In using the plug in the Ventilating connection I change its character to a certain extent by removing the closing-cap 12 and the reducing-cap 14, and after the stopper has been sufciently expanded to completely and rco perfectly close the connection in which it is situated I remove the holding-rod, thus leaving an unobstructed passage throughthe plug for the purpose to be hereinafter explained. The sleeve used on this plug is somewhat shorter than those ordinarily used, as it is necessary to leave a sufficient portion of the out-er end of the shaft projecting to enable a suitable gage 2l to be screwed thereon. The supply-pipe of the gage is provided with a suitable val ve 22, by means of which the supply of air or water may be cut off when desired. To the end of the gage supply-pipe is attached a hose 23, which leads to a suitable pump 2%.

To test the system, air or water is pumped through the plug 19 into the pipe under the required pressure.

I-Iaving thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-

1. In a testing-plug for soil and other pipes, the combination of an externally screwthreaded hollow shaft provided with a perforated head, adapted to be closed by a cap, a loosely-moun ted head adapted to move upon the hollow shaft, an expansible stopper situated between the two heads, an operatingsleeve, a square holding-rod, and means for retaining the rod in position whereby the sleeve may be operated to expand the stopper.

2. In a testing-plug for soil and other pipes, the combination of the externally screwthreaded hollow shaft provided with a perforated stationary head having an outerscrewthreaded collar, an expansible stopper mounted on said shaft, a sliding head looselymounted on the shaft and having a collar adapted to fit into a corresponding recessin the outer end of the stopper,an internally-screw-threaded operating-sleeve also mounted ou the shaft, a partially-squared rod seated in the hollow shaft and provided with a holding-handle, a closing-cap seated on the collar of the stationary head and a reducing-cap seated on the outer end of the operating-sleeve, substantially as set forth.

3. In testing a system of piping, the combination with suitable means for closing the outlet, inlet, and sanitary connections and an expansible plug situated in the Ventilating connection, said plug comprising an externally-screw-threaded hollow shaft provided with a perforated head andaloosely-mounted head, an expansible stopper between the two heads, and an internally-screw-threaded operating-sleeve on said shaft, of a pump attached to the outer end of said plug, and a pressure-gage interposed between said pump and plug.

In testimony whereof I affix my signature in` the presence of two witnesses.

MARCELLUS COLE.

Witnesses:

J. R. NOTTINGHAM, THOMAS J. STALEY.