Improvements in Apparatus for Feeding Fuel to and in Furnaces.
Year: 1889

page_text: Date of Application, Sth July, 1889
Complete Specification Left, 5th Apr., 1890-Accepted, 10th May, 1890
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Feeding Fuel to and in Furnaces.
We JOHN VICARS THOMAS VICARS and JOHN VICARS the younger all of 56 Seel
Street Liverpool in the County of Lancaster Engineers, do hereby declare the nature
of this invention to he as follows:-
This invention relates to improvements in our well known self stoking furnaces in
which fuel is fed to grate bars by means of reciprocating plungers, and in which the
fuel is caused to travel through the furnace by means of grate bars carried forward in
a body from the front towards the rear of the said furnace and moved back in
detachments or one at a time. The said invention has for its object to provide means
whereby the apparatus for feeding fuel to the grate bars, and the appliances for
actuating the grate bars may be operated independently so as to allow of both the
amount of fuel fed onto the bars and the speed of travel of the fuel through the furnace
being regulated to nicety.
The invention consists essentially in providing the self stoking apparatus with two
driving shafts from one of which the reciprocating plungers are operated by means
of excentric or other adjustable gear, whilst the fire bars by means of cams tappots
excentrics or like gear are given the required to and fro motion from the other
shaft.
Total 1.: KAL
TL 1000
Per pro J. T. KING,
W. B. Johnson,
Acant
COMPLETE SPECIFICATION.
Improvements in Apparatus for Feeding Fuel to and in Furnaces.
We JOHN VICARS THOMAS VICARS and JOHN VICARS the younger all of 56 Seel
Street Liverpool in the County of Lancaster Engineers, 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 improvements in our well known self stoking furnaces in
which fuel is fed to grate bars by means of reciprocating plungers, and in which
the fuel is caused to travel through the furnace by means of grate bars carried
forward in a body from the front towards the rear of the said furnace and moved
back in detachments or one at a time. The said invention has for its object to
provide means whereby the apparatus for feeding fuel to the grate bars, and the
appliances for actuating the grate bars may be operated independently so as to
allow of both the amount of fuel fed onto the bars and the speed of travel of the fuel
through the furnace being regulated to a nicety.
The invention consists essentially in providing the self stoking apparatus with
two driving shafts from one of which the reciprocating plungers are operated by
means of excentric or other adjustable gear, whilst the fire bars by means of cams
tappets excentrics or like gear are given the required to and fro motion from the
other shaft.

page_text: excentric and rod for giving reciprocating motion to one of the plungers. As many
excentrics and rods are used as there are plungers to be driven. f driving shaft for
excentric, movable fire bars, i driving shaft, and j gear for giving motion to the
fire bars. The above parts are of usual construction. kare ratchet wheels secured
to the shafts f and i. mn are rocking levers and pawls for giving motion to the
ratchet wheels k & l. m* link connecting the levers m & n. o is a connecting rod
coupled to any suitable motor for giving reciprocating motion to the levers m & n.
It will be evident that as the feed plungers d and firebars are actuated by means of
separately operated driving shafts that the speed of either portion of the apparatus
may be varied without affecting the other portion.
Fig. 2 is a vertical longitudinal section of a modification of apparatus under our
invention. Equivalent parts are denoted by the same letters as in fig. 1. The fire
bar driving gear is the same as that shown in fig. 1, whilst reciprocating motion is
given to the plungers d by means of tappets p secured to the shaft which act on
Tugs q on the said plungers d.
It will be evident that numerous modifications of apparatus may be made without
departing from our invention.
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 :-
In apparatus for feeding fuel to and in furnaces the combination of reciprocating
plungers and movable fire bars with separate driving shafts substantially in the
manner and for the purposes set forth.
Per pro J. T. KING,
J. Johnson,
Agent.