Year: 1888

page_text: Date of Application, 30th July, 1888
Complete Specification Left, 23rd Aug.. 1888
Complete Specification Accepted, 12th Oct., 1888
Engines.
We JOSHUA HOYLE of 45 Culver Street Waterhead Oldham in the County of
Lancaster Mechanic and JOHN HARRISON of New Royd Waterhead aforesaid Engineer,
do hereby declare the nature of this Invention to be as follows:-
Our invention consists in certain improvements in mechanism for regulating the
admission of steam to an engine.
We apply our improved mechanism to a rod which connects the governor lever to
a lever for actuating the throttle or other valve. On this rod we place a tube or sleeve
which is free to revolve but is prevented from sliding by collars or otherwise. Secured
on this sleeve at a convenient distance apart are two star or toothed wheels and the
lower portion of the sleeve has a screw thread cut upon it which is screwed into the
end of the lever for actuating the throttle or other valve; adjustable nuts or stop
pieces may be fixed on the threaded portion of the tube above and below the lever to
limit its traverse. Mounted on an adjustable bracket is a small grooved pulley or a
cone pulley with two or more grooves which is driven by a cord or in any suitable
manner from the flywheel shaft or other convenient shaft and which carries pegs on
its face.
When the engine is running at its normal speed the pegs on the grooved pulley
are clear of both the star wheels but when the speed of the engine varies the rod is
moved by the governor and one or other of the star wheels engages and is driven by
the pegs on the revolving pulley whereby the sleeve is turned thus operating the
valve lever and regulating the admission of steam to the engine.
We may dispense with the tube or sleeve and divide the rod by a swivel joint to
allow one portion of it to revolve; in this case the pair of star wheels would be
mounted on that end of the rod which is free to revolve which has a screw thread cut
upon it.

page_text: Instead of having two star wheels we may employ a single star wheel of suitable
length which would be turned in one direction by the pegs above and in the other
direction by the pegs below the centre of the grooved pulley and in place of having
the adjustable nuts or stop pieces on the threaded portion of the tube or sleeve we
may have a projection on the face of the pulley or peg wheel and have a blade or
projection secured to the crosshead by which the rod is connected to the valve lever
so that after one of the star wheels had been moved a certain distance by the revolving
pulley or peg wheel the projection on the latter would come in contact with the blade
or projection on the crosshead and so stop the motion and prevent overwindings.
Datad this 98th day of Jule 188e

page_text: COMPLETE SPECIFICATION.
Improvements in Mechanism for Regulating the Speed of Steam
Engines.
We JOSHUA HOYLE of 45 Culver Street Waterhead Oldham in the County of
Lancaster Mechanic and JOHN HARRISON of New Royd Waterhead aforesaid 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:-
Our invention consists in certain improvements in mechanism for regulating the
admission of steam to an engine.
We apply our improved mechanism to a rod which connects the governor lever to a
lever for actuating the throttle or other valve. On this rod we place a tube or sleeve
which is free to revolve but is prevented from sliding by collars or otherwise. Secured
on this sleeve at a convenient distance apart are two star or toothed wheels and the
lower portion of the sleeve has a screw thread cut upon it which is screwed into the
end of the lever for actuating the throttle or other valve; adjustable nuts or stop
pieces may be fixed on the threaded portion of the tube above and below the lever to
limit its traverse. Mounted on an adjustable bracket is a small grooved pulley or a
cone pulley with two or more grooves which is driven by a cord or in any suitable
manner from the fly wheel shaft or other convenient shaft and which carries pegs on
its face.
And in order that our Invention may be fully understood and readily carried into
effect we will describe the accompanying Sheet of Drawings reference being had to
the figures and letters marked thereon.
Figure 1 is a side elevation and Fig. 2 an end elevation of our improved mechanism.
Fig. 3 is a plan of one of the star wheels and Fig. 4 illustrates a device which we
may employ to prevent the mechanism overwinding.
In these views. a designates the governor lever, 6 the throttle valve lever and c
the sleeve mounted loosely thereon and kept from sliding by two collars d d fixed
adjustably on the rod b; e e¹ are the two star wheels fixed on the sleeve c; is the
nut formed in the crosshead on the throttle valve lever and which works on the
lower threaded portion of the sleeve c; g is the grooved pulley with pegs gl on its
side face; this pulley is mounted on a stud carried by an adjustable bracket or
standard h and is driven by a band from a pulley on the fly wheel shaft or other
shaft not shown.
Instead of the pulley g with a single groove as shown in Fig. 1 we may employ a
cone pulley g with two or more grooves as shown in Fig. 4 and drive this pulley by
a band and corresponding cone pulley on the shaft so as to be able to vary the speed
of the pulley g as desired.
When the engine is running at its normal speed the pegs 91 on the grooved
pulley g are clear of both the star wheels e e¹ but when the speed of the engine varies

page_text: the rod b is moved by the governor lever a and one or other of the star wheels e or el
engages and is driven by the pegs g¹ on the revolving pulley g whereby the sleeve c is
turned thus screwing the nut up or down and operating the valve lever f¹ and
regulating the admission of steam to the engine.
We may dispense with the tube or sleeve c and divide the rod by a swivel joint to
allow one portion of it to revolve; in this case the pair of star wheels e e¹ would be
mounted on that end of the rod which is free to revolve and which has a screw thread
cut upon it.
Instead of having two star wheels e e¹ we may employ a single star wheel of suitable
length which would be turned in one direction by the pegs above and in the other
direction by the pegs below the centre of the grooved pulley g. We have adjustable
nuts or stop pieces not shown on the threaded portion of the tube or sleeve c to prevent
overwinding or we may have a projection or projections 9 on the face of the pulley
or peg wheel g, see Fig. 4, and have a blade or projection secured adjustably to
the crosshead by which the rod 6 is connected to the valve lever so that after one
of the star wheels e or e¹ in this case secured to a screwed rod had been moved a
certain distance in one direction by the revolving pulley or peg wheel
the pro-
g
jection on the latter would come in contact with the blade or projection f* on the
crosshead fand so stop the revolving motion of the peg wheel and prevent over-
winding.
t
Having now particularly described and ascertained the nature of our said Inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
•
· 1. The combination with a pair of star or toothed wheels or a single star wheel
secured upon a screw connected with but arranged to be rotated independently of the
valve lever; of a peg wheel-driven in any convenient manner, substantially as and for
the purposes herein described with reference to the Drawings annexed.
2. The combination with a pair of star wheels or a single star wheel a peg wheel
with a projection or projections on its face of a blade or equivalent connected to the
nut for operating the throttle or other valve to prevent overwinding substantially as
herein described and as illustrated by the accompanying Drawings.
3. The several constructions combinations and arrangements of parts embodying
our improvements in mechanism for regulating the speed of steam engines substantially
as heroin described and as illustrated by the accompanying Drawings.
Dated this 22nd day of August 1888
H. B. BARLOW,
17, St. Ann's Square, Manchester,
Agent for Applicants.