US2431778A - Test cap - Google Patents

Description

' Dec. 2, 1947.

F. F. SOSAYA TEST CAP Filed March 22, 1946 FIG. ,1.

FIG. 2.

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Patented Dec. 2, 1947 UNITED STATES PATENT OFFICE TEST CAP Frank F. Sosaya, Santa Fe, N. Mex.

Application March 22, 1946, Serial No. 656,416

2 Claims.

1 The present invention relates to test caps and is more particularly concerned with a test cap for testing waste pipes in wash rooms and lavatories.

The primary object of the invention is to provide a device of the character referred to that can be readily applied and easily removed when the pipe end is readied for connection with an installation.

Another object of the invention is to provide a test cap of simpler and more practicable construction than prior devices.

With the foregoing and other objects and advantages in view the invention consists of the novel construction and arrangement of parts hereinafter described and claimed.

In the accompanying drawing illustrating the invention- Figure 1 is a view of the device in operative position, partly in side elevation and partly in section transversely.

Figure 2 is a perspective view of the cap, partly broken away, and

Figure 3 is a perspective view of the packing ring employed in conjunction with the testing cap.

Like numerals are used in the description and drawing when reference is had to the same parts of construction.

I designates the elbow of a waste pipe which projects through an opening 2 in room fiooring 3.

An annular closet fitting 4, having a flange 5 to rest on the floor and tapered side wall, is set in fioor hole '2. The bottom of this fitting is provided with a suitable annular opening for the reception of the exposed end of the pipe elbow. This fitting may be of ordinary type.

The test cap 6 which fits over the open end of the waste pipe, is preferably constructed of sheet lead with annular flange 1 adapted to impinge the elbow tightly all around and is put on before fitting 4 is placed in position.

Between the closet ring 4 and the flange of cap 6 is a space designed to admit an annular packing and caulking element 8 with an inner wall adapted to fit on the flange of cap 6 and an outer wall 9 which is tapered. This ring is preferably made out of hot lead and cast in a 2 mold. Its width is sufl'iciently less than that of the test cap flange and the depth of fitting 4 so as to supply wedging action thereto.

After the ring 8 is placed in position it is tamped down with a hammer or block, then caulked in tightly and ready for the test.

When it is desired to put in the permanent installations, a knife or chisel may be employed to cut around the test cap and remove the lead, thus permitting the connection to be made.

The advantage of making the packing ring out of hot lead, cast in a mold, instead of pouring hot lead around the test cap, is that the test cap is not melted by the lead packing ring as constructed, whereas poured hot lead would melt it As shown in Figure 1, the closet opening is sealed by the test cap. It also keeps all closet branch lines free from dirt and rubbish and prevents sewer gas from entering the building when the soil lines are connected to street sewer. When the plumbing system is filled with water it will test all soil and waste piping in the system.

As different embodiments may be made of this inventive concept and modifications may be made in the embodiment hereinbefore shown and described, it will be understood that the matter herein is to be interpreted as illustrative merely, and not in a limiting sense.

Having thus described my invention what I claim as new and desire to secure by Letters Pat ent is:

1. In combination, a floor ring with a tapered annular wall and bottom opening for the end of a waste-pipe, a lead test cap constructed to serve as a closure for the waste-pipe and provided with an annular flange to impinge the waste-pipe circumferentially and a lead caulking ring provided with a tapered outer wall, constructed to be interposed between the test cap and the floor ring.

2. A test cap for open waste-pipes comprising a lead closure with an annular flange and a tapered packing ring constructed of lead and fitting the flange of the test cap.

FRANK F. SOSAYA.

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