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Publication numberUS880594 A
Publication typeGrant
Publication dateMar 3, 1908
Filing dateDec 5, 1906
Priority dateDec 5, 1906
Publication numberUS 880594 A, US 880594A, US-A-880594, US880594 A, US880594A
InventorsRobert Stickdorn
Original AssigneeRobert Stickdorn
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Closet-flushing apparatus.
US 880594 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

.No. 880,594. PATENTED MAR. 8, 1908.




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Specification of Letters Patent. Application filed December 5. 1906. Serial No. 346.379-

No. 880,594. V Patented March 3, 1908.

To all whom it may concern: I Be it known that I, ROBERT STIoKD0RN,-a 1 subject of the German Emperor, residing at l Dusseldorf, Germany, have invented new connected with the piston is depressed and and useful Improvements in Closet-Flushing l closes the flush-pipe 3. The reservoir is now Apparatus, of which the following is aspecififilled through the inlet 8 which connects it cation. g with the interior of the small cylinder 5 and The object of the present invention is to which is placed well towards the lower end of rovide a closet flushin apparatus which is the latter. In order to retard, in some meas fitted with a ditferentia piston and a water ure, the flow of the water into the basin or reservoir which, by pulling a lever or a chain, l reservoir so that the pistons 13, 14 are safely or other similar means, is filled and emptied kept depressed, there is a bored cap 18, over again Without further manipulation, the resthe opening 8. When the filling is completed, ervoir remaining empty until the basin again pressure is caused in the air-tight tank, so requires flushing. that the water cannot continue to flow, and The invention has special relation to an arin consequence exercises its pressure on the rangement which effects, after the raising small piston 11, previously raised by the leof the differential piston as a consequence of ver 12, and again depresses it. The result of the release by hand of the water under the this movement of piston 11, is that the ports lar e piston, not only the filling of the spe- 15 and 16 are closed and that water from the oiafiy shaped tank, but also a renewed feed cylinder 10 is forced through the passage 9 of water under the large piston, which causes under the large piston 13 and that the two the automatic opening of the flush-pipe valve pistons 13 and 14 are raised to thereby 0 en after the replenishing of the tank. By valve 17, (Fig. 1). The water can then ow means of a further arrangement the alternate out of the tank for flushing the basin, while automatic filling and emptying of the basin the entry of the water to the tank is closed as or reservoir is obtained. pipe 7 is closed. The valve 17 which closes In the accompanying drawings: Figure 1 is the flush-pipe at the bottom, is connected a vertical section, partly in elevation, of my with the pistons 13, 14 by a spindle 29 in such a manner that the valve is not raised till the improved closet flushing ap aratus; Fig. 2 a similar section, partly bro en away, of a pistons rise sufliciently to prevent the entry of any water through the openings 8.

modification thereof; Fig. 3 an elevation, partly broken away, of the apparatus shown In order to attain an automatic alternate filling and emptying of the reservoir 2, the arm Fig. 1, and Fig. 4 a cross section on line 1 X, Fig. 3. rangement shown in Fig. 2, may be adopted. The mechanism of the ap aratus is in- The piston 11 is so arranged that it is actuclosed in a housing 1, with which the reserated by the pistons 13, 14. On the piston 14 voir 2 and the flush-pipe 3 are connected and there is arod 19 which carries an arm 20 which to which are attached the cylinders 4 and 5 engages witharod 21 of pistonll. When the pistons 13, 14, and the valve 17 are raised on the escape being opened, the'piston 11 is also for the differential piston. The small cylinder 5 is connected with the pressure feed-pipe raised by the arm 20 striking a block 22 on the rod 21, so that the water under the large 6 by a bend 7 and with the reservoir 2 by an opening 8, while the large cylinder 4 is conneoted through passage 9 with a cylinder 10. piston 13 can escape. As a consequence, the

In the latter is inclosed the piston 11 which is pistons 13, 14, and the valve 17 fall and the reservoir is again filled, the resulting pressure finally driving the valve or piston 11 raised by means of the lever 12 when it is reuired to release the water under the cylinder 13 of the differential piston and to fill the down to free the opening 9, so that the Water can flow under the piston 13 and lift it again and open the flush-pipe. In order that no reservoir 2, and which, as soon as the same is filled, is depressed by the water pressure.

resistance (air or water) is offered to the upward movement of the pistons 13 and 14,

When the piston 11 is raised, the water under the large piston 13 flows through the passpindle 29 is perforated as at 30.

At the top of reservoir 2, is arranged a sepsage 9 into the cylinder 10 of the housing 1,

and through ports 15 and 16 into the flusharate reservoir 23 for a disinfectant, from which there is always a certain quantity which is freed by the pressure, is depressed, togetherwith the small piston 14, by the pressure on the latter, so that the valve 17 pipe 3. p

The operation is as follows: The piston 13,

- working in a cylinder 25 that communicates piston 27, so that a small quantity of the dis- I the opening 26 drawn on the flush taking place. To this effect rod 19 is provided with a piston 27 with reservoir 23. On the fall of the pistons 13 and 14, this motion is communicated to infectant is drawn through into the cylinder 25 (Fig. 2). When the piston is again raised, (Fig. 1-), the outlet 26 is bined with a first cylinder communicating '1 therewith, a second cylinder, a differential 1 piston engaging both cylinders, a flush pipe, I

a valve on the piston controlling communication between the tank and the flush ipe, a water inlet pipe communicating with t e first cylinder above the piston, a passage connecting said inlet pipe with the second cylinder below the piston, a valve operable by the tank-pressure and controlling communication between said passage and the water inlet ipe and also between said passage and the ush pipe, substantially as specified.

Signed by me at Dusseldorf, Germany this seventeenth day of November, 1906. l



Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4955921 *Feb 14, 1990Sep 11, 1990American Standard Inc.Flushing mechanism using phase change fluid
US4984311 *Nov 30, 1989Jan 15, 1991American Standard Inc.Flushing mechanism with low water consumption
US5241711 *Jun 24, 1991Sep 7, 1993Badders Edwin TPressurized toilet flushing assembly
US5435019 *Sep 2, 1993Jul 25, 1995Badders; Edwin T.Pressurized toilet flushing assembly
US5553333 *Aug 17, 1994Sep 10, 1996Andersson; Sven E.Pressurized water closet flushing system
US5742950 *Sep 6, 1996Apr 28, 1998Chang; Shih-ChihApparatus for pressure assisted flush toilets
US5920919 *Apr 22, 1997Jul 13, 1999Chang Shih-ChihToilet flush system
WO1991008355A1 *Apr 11, 1990Jun 13, 1991American Standard IncFlushing mechanism using phase change fluid
Cooperative ClassificationE03D3/10