Year: 1887

page_text: Date of Application, 6th Sept., 1887.
Specification Accepted. 7th Oct., 1887

page_text: The frame C is suspended from the top of a hood or counterpoise D by a rod D'
and said hood loosely surrounds and is driven by a sleeve E that in turn surrounds
and is supported by an upright stem A' of the stand A.
The connection is made between the driving sleeve E and the hood D by means of
the sleeved wrist d which passes from sleeve through slot d' in the frame of the hood.
FF are elbowed governor arms which are pivoted to the hood or counterpoise D,
at f, while their inner ends are toggled to lugs E' on sleeves E by links so that
when the arms are thrown out by the speed of the engine they lift the hood or counter-
poise and through rod D' lift the frame C¹ to quicken the cut off.
To provide for regulating the sensitiveness of the governor arms a bushing E' may
be fitted in the lug E¹ and the pivot bolt 2 passes eccentrically through after the lug
has been straddled by the arms of the toggle 1 that the distance of the pivot
bolt may be regulated by turning the bushing.
The set bolt is to secure the bushing when adjusted.
G is the pulley shaft that connects sleeve E with the engine. Arranged below
the trip levers and sleeve bare lifting arms L which connect the trip levers C
with the hanger M from which the valve N is suspended. These levers are pivoted
in the stand A and each has a horizontal lug L' and a vertical lug L³ beneath the
plane of the axes of their pivots, the horizontal lugs for engagement with the hanger M
and the vertical lugs to each receive an end of a spring m that is interposed between
them.
The upper ends of the lifting levers are slightly rounded, and are notched to receive
and engage with the lower ends of the trip levers Cas shown in Figure 4.
Set bolts O O, the inner ends of which are cushioned as at o, serve to limit tho
outward throw of the lugs L' of levers L, which lugs are held apart by the spring m.
The hanger M has a stem M' which is screw threaded on its lower end to take
nuts M2 that confine a spring M on said sten M', and this spring by pressure on the
superjacent portion of the stand and nuts M serves to close the valve N when its
hanger is released by the levers L.
That portion of the hanger M just above its stem M' is made flat as at R and fits
snugly in a well R' in the stand where it forms a piston beneath which the air acts as
a cushion to break the drop of the valves.
Air is admitted to this well through ports R* R* which ports may be regulated in
size by screw valves as shown at Rt.
With this device, which may be used on any slide or one valve engine, the eccentric
need be set only slightly ahead of the crank and it will cut off at any point in the
piston stroke.
It will be observed of course that when the frame C is at its highest point the
bolts 9 will cause the rapid tripping of the valves and vice versa and thus the stroke
is shortened or lengthened as the governor arms raise or lower the tripping frame.
The valve hanger M is supported alternately by the lugs L L of the right and
left levers LL, for as the right hand trip lever C depresses the upper arm of the
right hand lifting lever L and raises its lug L' under the hanger M, the left hand
trip lever C will ease up on its lifting lever L and permit the spring m to depress
its lug L'.
Now when the speed attained causes the balls to fly apart and lift the frame C¹, the
eccentric of the engine acting through arm B¹ to dip the sleeve b to the right until
the arm of the right hand trip lever comes into contact with the bolt in the
frame on that side, and this throws its lower end out of engagement with the right
hand lifting lever L after it has caused the lug L' of this lifting lever to take the
place of the lug L' of the opposite lifting lever, and then when the arm B returns,
the left hand trip lever C will have a like action on its side.
It is obvious that as the speed increases and the arms F separate, the trip frame C¹
will raise and trip with increased rapidity to cut off sooner in the piston stroke.
If desired the stops q may be dispensed with and the tripping done by the under-
hanging lips of the trip frame, but the use of these stops is preferred as they can be
screwed in and out to nicely fix the tripping point,

page_text: The top of the trip frame is perforated to admit air above it to form a cushion to
prevent bumping by the sudden rise of the frame.
The shaft G that connects the governor sleeve E with the engine is surrounded by
a sleeve G² that forms a bearing for it and also forms a bearing for another sleeve H,
and shaft G carries a spur wheel G that meshes with a pinion g on the hub of a
pulley g¹ the stud 9 of which is secured in a boss g³ of the sleeve H which latter
turns loosely on sleeve G.
The sleeve H has clamped about it and rigidly secured thereto one end of an arm K
the other end of which is weighted as at K and the sleeve H also has loosely clamped
about it one end of an arm H' from which projects a pin h while the other end of
arm H projects in an opposite direction to arm K and its outer end is formed with a
countersunk opening to receive the ball of a ball link that connects with a similarly
formed end of a lever P that is hinged to the opposite side of the stand A at A¹.
This last named lever is enlarged and slotted as at P' and the stem D¹ of the counter-
poise D passes through it, a pin p serving to receive the lever P when it is lifted and
to cause it to lift the stem D' and trip frame C¹.
P.
To hold the lever P up after it has been raised the latter is provided with a
projection p¹ on its hinged end and just above the pivot of lever P is pivoted an arm p²
having a weighted outer end and on its hub a pawl p' for engagement with the
projection p when the lever P is in its raised position.
When this device is connected to the engine, the belt from the engine has the effect of
holding pulley g' in the position shown in Figure 1 against the tendency of the weighted
arm K to turn sleeve H and carry pulley o in an opposite direction and into a
horizontal line with the spur wheel 9 and while the pulley g' is in position with its
axis on about a vertical line with that of the spur wheel g' the arm H is supported in its
lowest position with its shoulder n resting against a pin n' that projects from a stand A
against which also rests a shoulder H of sleeve H; but should the belt shown in
dotted lines Figure 2 break or slip off of either of its pulleys, the arm K will turn
sleeve H so that its lug H³ acting on pin h of arm H' will lift the latter and
through ball link N lift the lever P, which latter acting on pin p will lift on
stem and raise the trip frame C¹ to cause the latter to trip levers C and drop the
valve N.
Of course if no trip mechanism were used the stem D' would be connected directly
to valve N.
A chain may be substituted for the ball link k if desirable, and as shown in
Figure 6 a spiral spring may be substituted for the weighted arm K before
described.
The said safety stop may be applied to any form of governor.
Having now particularly described and ascertained the nature of my said Invention,
as communicated to me by my foreign correspondents, and in what manner the same
is to be performed, I declare that what I claim is :-
First. The combination with a cut off valve of trip and lifting levers, a trip
frame, a counterpoise from which the latter is suspended, a driving sleeve upon which
the counterpoise slides, and elbowed levers linked to the said driving sleeve, as set
forth.
Second. The combination with the counterpoise and driving sleeve, of elbowed
governor arms, links or toggles for connecting the inner ends of said arms to lugs on
the driving sleeves and mechanism whereby the pivots that connect the links or
toggles with the driving wheel may be adjusted horizontally to regulate the sensitiveness
of the governor arms, as set forth.
Third. The combination of the rock shaft that connects the cut off mechanism with
the eccentric of the engine, a sleeve carried thereby having two crank arms, angular
trip levers, lifting levers adapted for engagement with the lower ends of said trip
levers, and a hanger from which the cut off valve is suspended adapted to engage arms
of the lifting levers, with a trip frame counterpoise and governor arms connected
substantially as set forth.

page_text: Fourth. The combination of the trip levers and their operating mechanism, the
lifting arms, springs for forcing the lower ends of the latter apart, and cushioned set
bolts for regulating their throw, with the cut off valve and its hanger, and a spring
for closing the valve when released by the lifting arms.
Fifth. The combination with the trip frame and levers, of adjustable bolts
passed through the trip frame for receiving the impact of the trip levers, as set
forth.
Sixth. The combination of trip levers with the valve and lifting levers, the
lifting levers being independent of each other and of the valve stem, as set
forth.
Seventh. The combination of the sleeve to which the pulley is studded and means
for giving it a tendency to turn against the strain of the pulley belt, with an arm
projecting from the said sleeve in the direction of the strain of the pulley belt, and a
lever parallel to said arm and connected thereto and to the valve or governor stem, as
set forth.
Eighth. The combination of the sleeve adapted to resist the strain of the pulley
belt, a weighted arm for giving it this resistance, another arm loosely clamped to said
sleeve and projecting from the opposite side thereof, a stop projecting from said sleeve
in position to strike a pin on the last named arm and a hinged lever connected to said
arm, and to the valve or governor stem, as set forth.
Ninth. The combination with the sleeved bearing of the sleeve to which the pulley
is studded, means for giving the latter a tendency to turn on its bearing against the
strain of the pulley belt, a shaft, and gearing connecting the said shaft with the pulley
and the driving sleeve of the governor and an arm and lever connecting the sleeve
with the valve or governor stem, as set forth.
Tenth. The combination with the valve or governor stem of means constructed and
operated as shown for lifting it to cut off steam in case of accident, and a spring for
returning it when released, as set forth..