Improvements in Apparatus for Supplying Fuel to Furnaces of Boilers.
Year: 1888

page_text: Date of Application, 27th July, 1888
Complete Specification Left, 13th Apr., 1889-Accepted, 15th June, 1889
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Supplying Fuel to Furnaces of
Boilers.
I SAMUEL HANSON of Adelaide Street, Halifax in the county of York, Cotton
Spinner do hereby declare the nature of this Invention to be as follows:-
My invention has for its object, the lessening of the power required to drive the
above stokers, and to enable the machines to run more regular and free, without
stoppage; also to give a uniform and regular feed of fuel from the front to the back
of the fire surface and vice versa.
I take out from the present apparatus the roller known as the measuring roller,
and insert plates or bushes in lieu thereof; by this means the machine can be driven
with comparatively little power.
I also attach to the plates or bushes an inclined guide plate, to guide the coal to
the exact position required in front of the fan or shovel.
I place upon the rotary fan or shovel shaft a cone (with flanges at both the narrow
and wide ends) this cone drives the fan or shovel preferably by a rope or band; near
the flange of the wide end of the cone is a slight groove (or the cone may be without
groove) a finger or guide fork is placed so as to act upon the rope or band, this finger
is carried on a pivotted or other shaped lever, the L or other lever is connected by.
a rod to a pin or stud upon the pinion wheel of the shaft of one of the crushing
rollers, the action is as follows: the fork is moved slowly backwards and forwards
upon the cone, varying the speed and throw of the shovel when at the narrow end of
the cone, the pin or stud is upon the dead centre, therefore the band is stationary for
a few seconds, this is also effected at the large end by forming a groove thereon; by
this means both the measuring roller and the guide or deflecting plate are
dispensed with, and a perfect regular feed from one end of the furnace to the other,
obtained.
DL: T.
T 1 1000
JOHN E. WALSH,
Crossley Street, Halifax, Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Supplying Fuel to Furnaces of
Boilers.
I SAMUEL HANSON, of Adelaide Street, Halifax, in the county of York Cotton
Spinner, 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 :-
My invention has for its object the lessening of the power required to drive the
above stokers, and to enable the machines to run more regular and free, without
stoppages; also to give a uniform and regular feed of fuel from the front to the back
of the fire surface and vice versa.
I place upon the rotary fan or shovel shaft a cone, this cone drives the fan or shovel
preferably by a strap or band, a finger or guide fork is placed so as to act upon the
strap or band; this finger is carried on a pivotted L or other shaped lever, the Lor
other lever is connected by a rod to a pin, stud, (crank or eccentric) upon the pinion
wheel of the shaft of one of the crushing rollers; or two cones may be employed
one above the other, by this means a separate rope or strap connects the two
cones.
The action is as follows:-As the stud pin, crank or eccentric revolves, the fork
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page_text: moves slowly the cord or strap backwards and forwards upon the cone, varying the
speed and throw of the shovel; by the aforesaid arrangement both the measuring
roller and the guide or deflecting plate are dispensed with, and a perfect regular
feed from one end of the furnace to the other is obtained.
DESCRIPTION OF DRAWINGS.
Fig. 1. shows front elevation of a double flued boiler with my improved stoker
applied.
I employ hoppers A, crushing rollers B, in a suitable case C, D are the rotary shovels,
the fuel passes direct from the crushing rollers B, over the inclines E, to the shoveĺ
boxes G, from which it is thrown on to the fire by the revolving shovels D, upon the
shovel shaft is a cone J driven by a cord or strap K, a finger, fork, or guide I for
the strap is placed upon a pivotted lever M, N is a link connecting the lever M, to
the connecting rod P, which is attached to a stud pin, crank, or eccentric R, from
the pinion wheel S, or shaft of one of the crushing rollers or from any other suitable
shaft.
Or two cones may be employed one above the other as shown upon the stoker of
the right hand flue of boiler in the drawing by this means a separate rope or strap
connects the two cones.
The action is as follows:-As the stud, pin, crank, or eccentric revolves, the fork L
moves the cord or strap K slowly backwards and forwards upon the cone J, varying
the speed and throw of the shovel and covering every inch of the fire grates equally
with coal, thus stopping cold air from passing where there is no fire, and keeping the
fires at one regular heat. By the aforesaid arrangement both the measuring roller
and the guide or deflecting plates are dispensed with, and a perfect regular feed
obtained from one end of the furnace to the other.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed 1 declare that what I
claim is
The use and employment of a cone or cones upon the shovel shaft (or the
equivalent) whereby the distribution of fuel is evenly spread from one end of the bars
to the other by the varying speed of the rotary shovels, substantially as shown and
described.
Dated this Eleventh day of Amil 1900