Year: 1889

page_text: A communication from T.A. GARDNER W
of America, Engineers.
I, RICHARD MORLEY HARISON of 99 Douglas Street, Glasgow, in the County of
Lanark, North Britain, Engineer, 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, that is to say:-
This Invention has for its object to improve the construction of steam-engine governor
details arranged to shift the eccentrics for working the engine distribution valves so as
to diminish or increase the quantity of steam used when the speed varies.
The improved apparatus is shown on an accompanying sheet of explanatory
drawings, on which figure 1, is a sectional end elevation, figure, 2, a longitudinal
vertical section, figures, 3, and 4, transverse vertical sections as at the lines, X-X
and Y-Y, respectively in figure, 2, figure, 5, a side elevation with a small part in section,
figure, 6, a side elevation of a pair of sleeves relatively movable by the governor action,
figure, 7, a sectional end elevation with parts in different positions from those in
which they are shown in figure, 1, and figure, 8, a section as at right angles to
figure, 6. In these drawings the same reference letters and numerals are used to mark
the same or like parts wherever they are repeated.
The rotating shaft, A, has keyed on it a kind of frame, B, made in two halves with
bosses, C, and with diametrically opposite parts, B, which extend outwards and
towards each other. On pins, 10, fixed in the parts, D, there are centered two
governor weights, E, the other ends of which are connected by links, G, to diametri-
cally opposite pins, 11, fixed to sleeves, H, which are loose on the frame bosses, C.
The pins, 11, extend opposite ways parallel to the shaft and have fixed to them curved
blade springs, 12, the other ends of which are fixed to the frame, B, these springs
being arranged to tend to move the sleeves, H, in a manner to draw the weights, E,
inwards. When the speed increases the centrifugal action makes the weights, E,

page_text: move outwards, and through the links, G, turn the sleeves, H, in one direction; and
when the speed decreases the opposite effect is produced and the sleeves, H, are turned
relatively to the frame, B, and shaft, A, in the opposite direction.
The sleeves, H, have their ends formed with eccentric flanges, J, on which are
loosely fitted rings, K ; and pins, L, fixed in these rings project through slots in the
frame, B, into holes in flanges, M, forming on the valve-working eccentrics, N. The
eccentrics, N, are by means of their flanges, M, jointed on studs, P, fixed in the frame, B,
and the eccentrics can swing from side to side on the studs, P. When a change of
speed occurs the hereinbefore described mechanism operates so as to shift the valve-
working eccentrics, N, across the shaft in a manner to bring the engine to its proper
speed or very nearly so.
Having now particularly described and ascertained the nature of my said Inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
The improved combination of parts forming a combined governor and valve gear
substantially as herein before described and as shown in the accompanying drawings.
1000
EDMUND HUNT,
Applicant's Agent.