US2893590A

US2893590A - Cap for soil pipe clean-outs

Info

Publication number: US2893590A
Application number: US673310A
Authority: US
Inventors: Duer H Buckley
Original assignee: Individual
Current assignee: Individual
Priority date: 1957-07-22
Filing date: 1957-07-22
Publication date: 1959-07-07
Anticipated expiration: 1976-07-07

Description

July 7, 1959 D. H. BUCKLEY CAP FOR son. PIPE CLEAN-0UTS Filed July 22, 1957 INVENTOR. DUER H. BUCKLE Y ATTORNEY United States Patent 2,893,590 CAP FOR SOIL PIPE CLEAN -0UTS Duer H. Buckley, Vienna, Ohio Application July 22, 1957, Serial No. 673,310 '1 Claim. (Cl. 220-39) This invention relates to means for closing clean-out openings in soil pipes.

The principal object of the inventi on is the provision of a closure member for a soil pipe opening comprising a ring and a cap engageable in said ring.

A further object of the invention is the provision of a cap for a soil pipe opening that is sealed with respect to the interior of the soil pipe so as to prevent oxidation, rust or corrosion of the engaged threaded portions of the closure.

A still further object of the invention is the provision of a simple and inexpensive closure for soil pipe openings that may be applied to three and one-half-inch or fourinch soil pipes and will maintain a removable cap in free threading relation thereto.

A still further object of the invention is the provision of a closure for soil pipe openings incorporating means for effecting a seal with plumbers putty between the closure elements and the soil pipe.

The soil pipe closure disclosed herein comprises a machined metal ring having annular threaded patterns on its exterior surfaces engageable with the inner threaded ends of soil pipe fittings whereby the same may be directly threadably engaged in such soil pipe fittings. The ring also has an angularly disposed inturned annular shoulder and an adjacent inwardly threaded area for the reception of an exteriorly threaded cap.

The cap has a relatively thick angularly disposed depending flange defining an annular groove adapted to receive and retain a lead gasket with respect to the shoulder of said ring and thereby effectively seal the cap to the ring and prevent the escape of liquids and vapors which would corrode and render the threaded engagement of the cap in said ring useless.

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being the intention to cover all changes and modifications of the example of the invention herein chosen for purposes of the disclosure, which do not constitute departures from the spirit and scope of the invention.

The invention is illustrated in the accompanying drawing, wherein:

Figure 1 is a perspective view of the soil pipe closure.

Figure 2 is a cross sectional view taken on line 2--2 of Figure 1.

Figure 3 is an enlarged cross sectional detail of pottions of the soil pipe closure shown in Figure 2 illustrating a modified form of lead gasket and putty retaining member.

By referring now to the drawings and Figure 1 in particular it will be seen that the cap for soil pipe clean-outs comprises a conical body member having an angularly extending horizontally spaced annular flanges 11 and 12 respectively located on its upper and lower ends. The annular flange 11 being larger in diameter than the annular flange 12 and the annular flange 12 having a tapered thread pattern 13 formed on its outer side while the annular flange 11 has a thread pattern 14 formed on its 2,893,590 Patented July 7, 1959 inner side. The annular flange 12 with its thread pattern 13 is adapted to be turned into a soil pipe clean-out opening to replace the cap ordinarily directly engaged therein. The annular flange 11 with the thread pattern 14 is adapted to receive a cap 15 having an annular flange 16 depending from its peripheral edge and continuing downwardly and inwardly in angular relation thereto so as to form a secondary angular flange 17. The outer surface of annular flange 16 is provided with a thread pattern 18 which registers with the thread pattern 14 heretofore referred to. The angularly depending flange 17 has an annular groove 19 formed therein thereabout and adapted to receive and retain a lead gasket 20. It will be observed that the angular annular flange 17 is disposed at the same angle of inclination from vertical as the conical body member 10 so that when the cap 15 is turned in the thread pattern 14, it will move downwardly and bring the outer lower surface of the angular flange 17 into face to face contact with the inner upwardly facing angular surface of the conical body member 10. In order that the cap 15 may be moved as just described it is provided with an upstanding centrally located boss 21 having a plurality of flat sides 22 circumferentially spaced thereabout so that a wrench may be applied thereto. It will be observed that the only contact between the cap and the conical body member 10 is through the lead gasket 20 and that the same forms a seal preventing moisture and the like from reaching the area of the registering

thread patterns

14 and 18. The resulting action is to maintain these thread patterns in non-corroded condition so that the cap 15 may be easily removed at any time.

In Figure 3 of the drawings a modification of the lead gasket is illustrated wherein an angularly depending a11- nular flange 23 is provided with an angular groove 24 which in turn receives a lead gasket 25 having a secondary angular groove 26 therein which a head of putty 27 may be disposed. When the cap of the modification is moved downwardly into a conical body member 28, the putty 27 will first engage the inner surface thereof and form a protective film between the same and the lead gasket 25 as well as the adjacent portions of the cap and angular rather conical body member thereby ensuring the positive seal of these members to protect the thread areas thereabout as heretofore described.

Referring again to Figure 2 of the drawings it will be seen that notches 29 are formed in the upstanding annular flange 11 of the conical body member to facilitate rotating the same when installing it in a soil pipe cleanout opening.

It will thus be seen that the cap for soil pipe cleanouts disclosed herein meets the several objects of the invention and having thus described my invention, what I claim is:

A cap for a soil pipe clean-out comprising a conical body member having a depending annular flange on its lower end and an upstanding annular flange of larger diameter than said depend-ing annular flange on its upper end, said flanges being threaded externally and internally respectively, a cap having a depending flange about its peripheral edge and conical flange thereon, said depend ing flange having external threads and said conical flange having an annular groove in its outer surface and a lead gasket disposed in said annular groove.

References Cited in the file of this patent UNITED STATES PATENTS 775,687 Snigo Nov. 22, 1904 1,112,136 Hayes Sept. 29, 1914 1,436,331 Ayling Nov. 21, 1922 FOREIGN PATENTS 233,816 Switzerland Nov. 16, 1944