Improvements in Governors for Steam Pumps, Engines, and the like.
Year: 1898

page_text: Date of Application, 26th Apr., 1898-Accepted, 30th July, 1898
[Communicated from abroad by The MASON REGULATOR COMPANY, a corporation
organized and existing under the laws of the State of Maine, and having its
place of business at No. 6, Oliver Street, Boston, County of Suffolk, and State
of Massachusetts, United States of America, Manufacturers.]
Improvements in Governors for Steam Pumps, Engines, and the like.
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake, & Co., Patent Agents,
45, Southampton Buildings, in the County of Middlesex, 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 invention relates to governors of that class in which the throttle-valve, or
other controlling valve of the pipe conveying the steam supply, or other medium
of fluid pressure is operated from a piston, the latter being acted upon by a liquid
which is forced into the pressure chamber containing the said piston by means
of a small pump that is connected with and operated from some moving part of
the steam pump, engine or the like, which is to be controlled in its speed of
working, the said valve thereby being operated in such manner as to govern the
supply of steam or other medium of fluid pressure aforesaid.
The invention has reference more particularly to the piston aforesaid, the pres-
sure chamber within which the piston is arranged, and the dash pot or cushioning
contrivance by means of which steadiness of movement of the piston and weight
lever are secured and undesirable oscillations are obviated.
The invention will be described first with reference to the accompanying draw-
ings, in which is illustrated the best embodiment thereof that I have yet con-
trived and afterward the distinguishing characteristics of the invention will be
particularly pointed out and distinctly defined in the claims at the close of this
specification.
Fig. 1 of the drawings is a view chiefly in transverse central section of a
governor embodying my invention.
Fig. 2 is a view in plan of the shell or body of the governor.
Fig. 3 is a view showing certain parts of the governor in vertical section on the
dotted line 3, 3, of Fig. 2.
Fig. 4 is a view showing certain parts of the governor in vertical section on
the dotted line 4, 4, of Fig. 2.
13 is the shell or body of the governor, 25 is the bottom plate thereof, the said
body or shell and bottom plate being held together by means of screws 27, 9 is
the bonnet or cover which is fitted to the upper end of the said shell or body and
secured thereto by screws 26, the said bonnet or cover having an upwardly ex-
tending hub to which is fitted the ring-shaped lower end of a bracket 8, the said
bracket being adjustable around the said hub and secured in a fixed position
thereon by means of the nut 7 which is turned onto the threaded upper end of
the said hub, and the said bracket 8 having mounted thereon pivotally at 4 the

page_text: weight-lever 3, the latter having the weight 5 secured in the desired position of
adjustment upon its horizontal arm by means of the clamping screw 6, and
having connected pivotally to its vertical arm at 2 the coupling piece 1 which is
intended to have applied thereto one end of the rod (not shown) that forms part
of the connections to the throttle or other valve which is to be operated. The
said bonnet or cover 9 and its hub are centrally bored, as shown to receive the
rod 101 of the piston 10, the upper end of the said piston rod supporting the
horizontal arm of the weight lever 3.
D is the central or interior cavity holding the oil or other fluid which is em-
ployed within the governor. 21 is a rock shaft which, in practice, is connected
with and operated from some suitable moving part of the steam pump, engine, or
the like, which is to be controlled in its working. 20 is the usual forked arm
which is applied to the said rock shaft 21, 23 is the yoke which is connected
pivotally with the said forked arm by means of screws 22, and 24 is the pin, or
the like device by means of which the said yoke is joined to the plunger 19 so
that as the rock shaft 21 is operated motion shall be communicated to the
plunger 19 through the parts and connections which have been described.
E, E are the chambers in which the opposite ends of the plunger 19 operate,
and 18 designates the removable caps or covers in which the said chambers are
partly formed. F, F, are passages leading to the chambers E, E¹ and F2 F2 are
check valves interposed between the said chambers and the interior cavity D, on
the supply side of the said chambers. G, G¹, are passages leading from the said
chambers to the pressure chamber B and G2 G2 designate check valves interposed
between the chambers E, E', and the pressure chamber B. J is a passageway
through which the oil or other fluid that has been pumped into the pressure
chamber B is allowed to return to the chamber D, 14 being a needle valve or the
like regulating device by means of which to determine the rate at which the
oil or other fluid shall be permitted to flow back into the chamber D.
The foregoing parts with the exception of the pressure chamber B are, or may
be, as heretofore constructed in practice, or may be of any other suitable con-
struction and arrangement. The piston 10 is formed hollow, that is to say, as a
short hollow cylinder, it having one end thereof closed by a disk to which is
applied the piston rod 101 aforesaid. The flange or annular portion of the piston
fits into the space between the inner surface of the shell or body 13 and the
periphery of the cup 11, which latter is secured by screws 12 to the diaphragm 121
of the shell or body 13. This space constitutes the pressure chamber B. The
upper portion of the said pressure chamber is closed or substantially closed by the
annular portion of the piston 10, which I have made, in practice, to fit with a
close working fit between the inner surface of shell 13 and the outer surface of
the upper part of cup 11, but preferably the lower portion of the said pressure
chamber is enlarged somewhat by reducing the external diameter of the cup 11
as indicated in the drawing, thereby providing greater capacity for the recep-
tion of the oil or other fluid which is pumped through the passages G, G. The
interior space C of the cup 11 constitutes the dash pot chamber, the said dash pot
chamber being enclosed by the hollow piston 10, the disk of which covers the
said chamber. Communication is established between the said dash pot chamber
and the pressure chamber by means of the passage H, the latter being formed
wholly in the fixed parts of the governor. In the drawing the said passage is
shown extending downward through the bottom of the cup 11, through the
diaphragm 121, into the block 122 which is provided on the under side of
said diaphragm, outward within the said block, and then upward through the
diaphragm and the wall of cup 11, in which last it turns again outwardly and
opens into pressure chan: ber B. 29 is a needle valve by means of which to
regulate the flow of the fluid through passageway H, 28 being a screw which
serves as a cover to the hole in which the said valve 29 is located.
A certain portion of the fluid which is pumped into pressure chamber B finds
its way into the space which is contained within the cup 11 and hollow piston 10,

page_text: filling both. The disk of the piston, it covering the cup 11, as aforesaid co-acts
with the contents of said cup and of the interior of the piston itself in steadying
the movements of the piston. The construction which has just been described is
simpler than that which has been adopted heretofore, is compact in arrangement,
is less expensive to produce, and is more convenient in use.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, as communicated to
me by my foreign correspondent I declare that what I claim is:-
The improved pump governor herein described, having the annular pressure
chamber, the central dash pot chamber, the restricted passageway between the
said chambers, and the hollow piston, covering the said dash pot chamber,
co-acting with the contents of its own interior and of the said dash pot chamber,
and also provided with the annular portion closing or substantially closing the
said pressure chamber.
Dated this 28th day of Anvil 1800
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.