Temporary Closing Device for Pipes
A patent for a temporary closing device for pipes has been filed in the United States Patent Office, Washington, D. C., under Serial No. 867,339. The invention relates to temporarily closing the bell-end of a pipe while it is being tested. Fig. 1 is a longitudinal central sectionial view of the bell-end of a pipe showing this invention applied thereto, and Fig. 2 is a plan of a portion thereof. The inventor’s claims include: The combination with a valve adapted to seat in the pipe, of a flat head smaller than the valve arranged parallel therewith and having perforations at different distances from the center, means supported by said head for applying pressure to valve, and arms adapted to be pivoted to said head at any set of perforations and having inward projections for engaging under the flange of the pipe. According to the specifications in the use of the device the valve is placed in position on its seat; the head is then placed over the end of the pipe in alinement therewith, the screw being brought into the seat 17, and the projections 23 under the flange. Then the screw is turned to apply neecssary degree of pressure and water is turned on through the pipe. This water is applied under the necessary head to secure the pressure to which the test is to Be run. When the test has been made the water is shut off, the screw loosened and the arms turned away. Then the head and valve can be removed separately and used again without necessitating work on the pipe itself.
The patronage of the water works of Richmond, Mo., has been greatly increased in recent years. A Missouri newspaper cites the fact that during the year ending January 1, 1910, the city pumped 21,000,000 gallons; while during the year ending January 1, 1917, the amount had increased to 58,000,000 gallons. The income from the water works has increased from $3,700 to $8,000. and $49,000 of the city bonds have been paid.