US1938064A - Apparatus for cleaning waste pipes - Google Patents

Description

1933- B. c. CARMINE 6 APIARATUS FOR CLEANING WASTE PIPES Filed Oct. 14, 1932 WITNFSSES: B yaw? By en amm -armme, 9' W5 UNITED STATES.

Patented Dec. 5, 1933 v APPARATUS FOR CLEANING WASTE PIPES unname- Benjamin'C. Carmine, Cambridge, Md.

Application This invention relates to apparatus for cleanthe supply pipe is available to remove an obstruction in the waste pipe.

I-Ieretofore it has been connecting pipe between thewater supply pipe and waste pipe of a basin, and to employ cut-01f valves in the'connecting pipe and waste pipe,

' which when operated in the proper manner cause water under pressure to be admitted to the waste pipe and directed downward therethrough to remove sediment. or other foreignmatter with which the waste; pipehas become'clogged. Such apparatus isshown in U. S. Letters Patent to Ore E. Townsend, No. 1,164,892, granted December 21, 1915. In utilizing the arrangement there shown, certain difficulties are experienced: due to the varying locations of the water. supplypipes and wastepipe in different types of basins. Moreover, according to thatscheme, two valves, which mustbe operatedin proper sequence, are employed,- and this renders the operation sufiiciently complicated so that itis beyond the comprehension of the average household servant.

. The principalobjectof my invention is to over- .come the aforementioned difficulties by the pro- 35- vision of an automaticcheck'valve in'the waste pipe of such apparatus, this valve being operable under the influence of a pressure jet to seal off communication between the waste pipe and basin, and being removable from its casing for the purpose of cleaning or replacement. 7

Other more specific objects of my invention relate to the provision of a special form of check valve and its manner of operation; and to the employment of pipe fittings which can be readily applied to all common forms of water basins, irrespective of the locations of the pipes leading thereto, whereby they may be converted to the practice of my invention.

Still other objects and advantages characterizing my invention will become more fully apparent from the description hereinafter set forth of one embodiment or example thereof, having reference to the accompanying drawing. Of the drawing:

Fig. I represents a front elevation of a water basin to which my invention has been applied,

proposed to provide a October-'14, 1932. Serial No. 637.691

' 2 Claims. ('01. 182-452) Fig. II represents an enlarged detailed front view of the waste-pipe leading downward from the basin, certain parts being shown in cross sec,- tion for clearness of illustration; and,

Fig. III represents a side view of the waste pipe, with certain parts shown in cross section.

With reference initially'to Fig. I of the drawing, there is shown a basin 1, such as an ordinary sink, having the usual hot and, cold water supply pipes leading thereto, these pipes being designated respectively at 2 and 3. The'water supplylpipes 2 and ,3 terminate in faucets 4 above the basin. The waste pipe leading downward vfrom the basin 1 is comprehensivelydesignated at 5. It includes a shortpipe section '6 extending downward from the outlet '7 at the bottom Of the basinl and a lowerpipe section. 8. Between the upper and lower sections 6 and.8 of the waste pipe,---there is a special three-way fitting 9,. and immediately below this a U-shaped trap 10, these parts being shown in detail in Figs. II and III.

The special fitting 9 is connected at its upper end to the upper section'6 of the waste pipe by a slip joint 11, which enablesone part to be swiveled" with respect to the other., Similarlyat its lower end the fitting 9 hasa like slip joint 12 by which it is connected to one leg of the trap 10 and adapted to swivel with respect thereto. 'The trap 10 is in turnconnected to the lower section 8 of the waste pipebbyanother like slip joint 13, 8 as shown in Fig. III. In the hot water'sup'ply pipe 2 there is'provided a tee 14to which is attached a'connecting pipe 15 which leads to the special fitting 9 ofthe waste "pipe 5. The. connecting pipe 15 includes therein a manually operated cut-offvalve 16 and a terminal member. 17 by which it is joined to the waste pipe fitting 9. The terminal member .17 has one end 18 threaded for engagement with the cut-off valve 16. It includes as an integral part a nut 19. Also formed integrally with the terminal member l'l there is a cap portion 20 which is internally threaded and adapted to engage external threads on thevalve casing 21 of the waste pipe fitting 9. Disposed centrally of the cap portion 20 there is 1 00 a nozzle 22 of reduced diameter. 7

In the valve casing 21 of the waste pipe fitting 9 there is provideda swinging check valve 23. The swinging check valve 23 is supported on a In an obvious manner the hinge pin 24 may 1 10.

be unscrewed to permit the removal of the valve 23 through the large opening at the entrance to the valve casing 21. The swinging check valve 23 includes a disk 26 and a flat plate 27 attached to the rear face thereof.

In its normal position the swinging check valve 23 engages a ledge 28 within the valve casing 21 and rests in a vertical position not obstructing the passage of water from the basin 1 through the waste pipe 5. this position the check valve 23 is immediately in advance of the nozzle 22 of the connecting pipe 15. The plate 27 afiords a flat surface against which the jet of water from the supply pipe 2 will impinge when the cut-01f valve 16 is opened. Under the infiuence of the pressure jet from the connecting pipe 15, the check valve .23 is adapted to swing to a position shown in broken lines in'Fig. II. In the latter position it engages an annular seat 29 within the fitting 9. A simple method of forming a valve seat such as indicated at 29 is to insert a tube having a diagonally cut end within the fitting 9 and to join the two parts together by sweating. r 1

The operation of the above described apparatus is as follows. Under ordinary circumstances the manually operated valve 16 is closed and the swinging check valve 23 is disposed vertically against the ledge 28 of the casing 21. Assuming that the waste pipe has become choked with foreign material, and that it is desired to clean it out, the cut-off valve 16 is opened. Water is then admitted from the hot water supply pipe 2 through the connecting pipe 15 to the nozzle 22. As the jet of Water issues from the nozzle 22, 'it strikes the flat plate 27 of the swinging check valve 23 and causes the latter to swing upwardly to engagement with the annular valve seat 29.

I This permits the passage of hotwater to the lower section 8 of the waste pipe and obstructs passage of such water to the upper section 6 of the waste pipe. Moreover, if the obstruction in the Waste pipe is not dislodged at once by the incoming water pressure will build up in the waste pipe fitting '9, and the check valve 23 being maintained under pressure against the annular seat 29, the full force of the water pressure-will be available to force out the obstruction in the waste pipe.

It is to be particularly noted that the check valve 23 is so designed and related to the connecting pipe 15 that immediately upon the opening of the cut-off valve 16, it is swung to engagement with the annular seat 29, so that with the first rush of water into the waste pipe there will be no escape of a part of the water upward through the upper section 6 of the waste pipe into the basin 1. Furthermore, it is important to note that the special fitting 9 of my invention is so designed that it may be readily applied to all ordinary forms of basins, and that it is a very simple matter to adjust this fitting to the proper angle for connection to the hot or cold water supply pipe leading to the basin. The few parts which are added to the equipment available to accomplish the conversion of a water basin to the practice of my invention are of simple and economical manufacture. I

While I have shown and described one particular example or embodiment of my invention, it will be understood that various changes may be made as to the form of the special fitting. employed and the parts associated therewith with- 90 out departing from the spirit of my invention as defined in the annexed claims.

'Having thus described my invention, I claim:

1.. In combination with a basin having a water supply pipe, and a waste pipe with a three-way fitting therein, a pipe connection leading from said water supply pipe to said three-way fitting and there terminating in a nozzle, a manually opera-ted valve in said pipe connection, and a swingw ing check valve disposed at the side of said fitting ill in advance of said nozzle, said check valve being adapted, when said manually operated valve is opened, to be swung upward under the pressure of water issuing from said nozzle to a position per mitting passage of such water to the section 0] the waste pipe beneath said fitting and obstrucing passage of such water to the section of the waste pipe above said fitting,and said fitting having an enlarged opening surrounding said nozzle through which opening said swinging check valve is removable.

.2. In combination with a basin having a water pp y pipe, and a waste pipe with a'three-way fitting therein, a pipe connection leading from' said water supply pipe to said three-way fitting and there terminating in a nozzle, a manually operated valve in said pipe connection, a hinge pin disposed within said fitting and removable through the wall thereof, and a swinging check valve pivoted on said hinge pin in advance of 13 5; said nozzle, said check valve being adapted, when said manually operated valve is opened, to be swung upward under the pressure of water issuing from said nozzle to aposition permitting passage of such water to the section of the waste i pipe beneath said fitting and obstructing passage of such water to the section of the waste pipe above said fitting, and said fitting having an enlarged opening surrounding said nozzle through which opening said swinging check valve is re- 3 movable.

BENJAMIN C. CARMINE.

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