New or Improved Combination Screw-down Valve and Ball Valve. cock for Water Supply Pipes and the like.
Year: 1899

page_text: Date of Application, 31st July, 1899 -Accepted, 2nd Sept., 1899
New or Improved Combination Screw-down Valve and Ball Valve.
cock for Water Supply Pipes and the like.
I, ERNST ZIEGLER, of 58, Alter Garten, Koenigsberg, Prussia, German Empire,
Manufacturer, do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement: —
The object of this invention is a new or improved combination screw-down
valve and ball valve-cock specially adapted for water supply pipes, in which
the ball valve owing to the pressure of the liquid, can be made to enter its seat
and shut off the supply, thereby admitting of the screw down valve being
removed from the cock when its component parts require repairs or cleaning.
Upon the screw down valve being replaced the ball is forced from its seat and
held in a cavity provided in the lower portion of the cock casing without interfering
with the flow of the liquid through the screw down valve. This arrangement is
of great importance in dwelling houses where in consequence of the repairs and
cleaning required in screw down valves the main supply had hitherto frequently
to be cut off while repairs and cleaning were taking place, thus leaving the
house without water and entailing considerable inconvenience and expense.
In order to render my invention more readily understood, I have hereunto
attached a sheet of drawings in which the new or improved combination cock is
illustrated in vertical section.
A is the casing having the usual outward conformation and being adapted
to be screwed into a socket connected with the supply pipe. In the interior of
the casing there is provided a partition having a central circular aperture the
upper and lower rims of which form respectively the valve seats s for the screw
down valve, and s¹ for the ball valve. The hand operated spindle D of the screw
down valve is held in the bore of screw plug C secured in threadings of cap B,
the lower part of which is screwed into casing A. and is provided with a female
screw thread in which the male screw d of spindle D can be turned in order
to raise or lower the valve plate p provided with washer w from or onto its seat s.
The spigot p serves to maintain plate p in its proper position relative to
spindle D.
The ball valve consists of ball R, made of india rubber or similar elastic
material, and valve seats the screw plug E is provided for admitting of the
insertion of ball R and has in its upper surface a suitably formed cavity for
receiving the ball R.
It will be seen that when the screw down valve is opened, the lower end p2 of
spigot p will prevent the ball R from being forced into its seat s¹ by the pressure
of the water entering the cock in the direction indicated by an arrow, allowing
the water to flow unimpedly through the space beween seats and washer w,
while if the valve plate p, washer and therewith spigot p¹ 72 are further
raised by operating the spindle D, the ball R will be forced into seat s¹ securely
shutting off the supply. The screw down valve can then be completely removed
from casing A by unscrewing cap B and be replaced after the repairs or cleaning
operations are completed.

page_text: Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:-
New or improved combination screw down valve and ball valve cock for water
supply pipes and the like in which an interior partition, having a central
circular aperture, furnishes seats for the screw down valve and the ball valve,
said seats being formed by the upper and lower rims of said aperture, and a
flexible ball being provided and located in the lower chamber of the cock casing
in order to admit of the said ball being forced into its seat by the pressure of the
water supply when the screw down valve is raised over a given point or removed
from the cock, the whole arranged and constructed substantially as and for the
purpose described and illustrated in the accompanying drawing.