GOVERNOR FOR CONTROLLING AND REGULATING THE SPEED OF PUMPS
Year: 1884

page_text: JOHN CHURM Engineer and Iron Founder Bucknall near Stoke upon Trent
Staffordshire do hereby declare the nature of my invention for GOVERNOR FOR
CONTROLLING AND REGULATING THE SPEED OF PUMPS to be as follows:-
Accompanying drawing shows the mode of applying my invention. A is a
cylinder with a stuffing box at one or both ends. B is a piston which is fastened
upon piston rod C. C. F. F. are two ports or outlets communicating with each
other by means of chambers or passages G. G. H is a Plug Tap or valve by means
of which communication between the ports F. F. may be intercepted or blocked.
I is also a cylinder containing a piston J which is connected to piston rod K.
L. L. are two valves which are seated in two holes communicating between
passiges G. G. and cylinder I. Through the top of valves L. L. are one or more
small holes.
The mode of working my invention is as follows. I fill cylinder A. passages G. G.
and cylinder I up to the under side of piston J with water, or other solid fluid.
I then connect my piston rod C. C. to the pump, or Engine driving same and so
arranged that piston B will make the same number of strokes as bucket or ram of
pump. By refering, to before named drawing it will readily be seen that as
piston B moves backward and forward in cylinder I the fluid contained in said
cylinder will be propelled along passages G. G. to each end of the cylinder A
alternately. By means of Plug Tap or Valve H I contract or expand the orifice
which connects passages G. G. and thus determine the quantity of fluid that may
pass through the said passage in a given time. If therefore piston B move toɔ
rapidly to allow the said fluid to pass through plug tap or valve H the surplus
fluid raises valve L. L. and passes into cylinder I and instantly raises piston J.
Piston rod K is connected with or to a valvo or other appliance for governing the
speed of pump, or Engine for driving same, and is so arranged that when piston J.
rises in cylinder I the motive power is reduced and the pump at once slackens its
speed. As soon as the speed is so reduced as to allow piston B to travel at its
proper speed the fluid which has been forced into cylinder I will flow through
small holes in valves L. L. until cylinder A and passages G. G. are full again. It
will be seen that if a pump be connected to my governor and at any time loose its
water, instead of rushing off at a rapid speed, by the action of piston B, forcing the
fluid through either port F. F. more quickley than orifice H will allow it to pass,
the fluid will rush through valve L. or L. thereby raising piston J closing governor
valve and regulating speed of pump.
Dated 10111
• 1004

page_text: COMPLETE SPECIFICATION.
JOHN CHURM, Engineer, of Bucknall, Stoke-on-Trent, do hereby declare the
nature of my invention for GOVERNOR FOR CONTROLLING AND REGULATING THE
SPEED OF PUMPS and in what manner the same is to be performed, to be par-
ticularly described and ascertained in and by the following statement :-
Accompanying drawing shows the mode of applying my invention and same
letters on each view represent same parts. A is a cylinder with stuffing box at
one or both ends. B is a piston which is fastened upon piston rod C. C: F Fare
two ports or outlets communicating with each other by means of chamber or
passage G G. H is a plug tap or valve by means of which communication between
the ports F F may be intercepted or blocked. I is also a cylinder containing a
piston J which is connected to piston rod K. L. L. are two valves which are
scated into holes communicating between passage GG and cylinder I. Through
the top of valves L. L. are one or more small holes. The mode of working my
invention is as follows. I fill cylinder A, passages G. G., and cylinder up to
underside of piston J. with water or any other solid fluid. I then connect my
piston rod C. C. to the pump or engine driving same, and so arranged that piston B.
will make the same Number of Strokes as the bucket or ram of pump. By
referring to the before named drawing, it will readily be seen, that as piston B.
moves backward & forwards in cylinder I., the fluid contained in the said cylinder
will be propelled along passage G. G., to each end of cylinder A alternately. By
means of Plug top or valve H, I contract or expand the orifice which connects
passages GG, and thus determine the quantity of fluid that may pass through the
said passage in a given time. If, therefore, piston B moves too rapidly to allow
the said fluid to pass through plug or valve H, the surplus fluid raises valves L. L.,
and passes into cylinder I., and instantly raises piston J. Piston rod K is con-
nected with or to a valve or other appliance for governing the speed of pump or
engine for driving same, and is so arranged that when piston J rises in cylinder I,
the motive power is reduced, and the pump at once slackens its speed, and as soon
as the speed is so reduced, as to allow piston B. to travel at its proper speed, the
fluid which has been forced into cylinder I, will flow through small holes in
valves L. L. until cylinder A and passages G. G. are full again. It will be seen
that if a pump be connected to my governor, and at any time loose its water
instead of rushing off at a rapid speed by the action of piston B. forcing the fluid
through either port F. F. more quickly than orifice H will allow it to pass, the
fluid will rush through valve L. L, thereby raising piston J, and closing governor
valve. In cases where I find it more convenient, I use two separate rams instend
of piston B. The said rams working in separate barrels, but connected by means
of a passage in which I insert my plug tap or valve, and to which I connect my
cylinder I. I also use a ram in place of piston J, where more convenient or
preferable, and work my governor either horizontally or vertically as the case may
be, to suit my convenience.
Having now particularly described and ascertained the nature of my said
invention, & in what manner the same is to be performed, I declare that what
I claim is
-
"An improved mode of governing or regulating the speed of pumps :-'
substantially as described :-herein.
"1