Year: 1894

page_text: Date of Application, 25th Oct., 1894
Complete Specification Left, 8th June, 1895-Accepted, 25th Oct... 1835
I, MAX SONNENSCHEIN of No. 1 Reichsrat Strasse Vienna, in the Empire of
Austria, Merchant, do hereby declare the nature of this invention to be as
follows:-
This invention consists of hopper for containing fuel, below which is an
enclosure in which are two horizontal compartments attached to the upper face of
the furnace, and communicating therewith by means of openings, provided for the
purpose of admitting the fuel.
Below the fire-door is a horizontal shaft driven by power in the usual way, and
connected by means of an endless chain or otherwise, to another shaft revolving
inside one of the compartments above.
This shaft operates by means of cams levers or otherwise a second shaft, on
which are the shovellers or their equivalents for tossing the fuel into the furnace.
The working parts are so enclosed as to prevent the introduction of undesirable
cold air into the furnace. The shovellers are furnished with air holes so that air-
pressure or suction can be utilised to hasten or retard their action and consequently
to control the delivery of coal to the furnace.
Tension and other springs are provided and a tension roller is also employed to
regulate the motion of the cams and effect the to and fro action of the shovellers
and the opening or closing of the apertures leading into the furnace.
When it is desired to separate the fuel and deliver it in small quantities, an
endless worm may be caused to rotate on the coal platform and divide it into
suitable portions. Instead of this worm a regulable. sliding valve or port placed
in a horizontal plate can be employed as a distributor for the coal, to deliver it
from the hopper or coal reservoir on to the platform whence it is shovelled into the
furnace.
Dated this 24th day of October 1894
S. S. BROMHEAD,
97 Newgate Street, London, Agent for Applicant.
An improved Autюшные шеспашка роди
I, MAX SONNENSCHEIN of 1 Reichsrat Strasse, Vienna, Merchant, 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:-
This invention has for its object the uniform continuous feeding of the entire
grate surface of steam boiler furnaces with uniform small quantities of coal (also
coal dust,) without the intervention of the stoker, with closed furnace doors, that is
to say without access of injurious cold air, thereby obtaining a uniform and rational
combustion and a saving of labor.
The apparatus is manufactured in two constructional forms, namely (a) for pieces

page_text: of coal of between one-fourth and four inches in size, and (6) for any smaller pieces,
aiso mixed coal, even the finest dust.
The two constructional forms are distinguished from each other only by the
different arrangement of the coal distributors.
In the accompanying drawings:
Fig. 1. represents a front elevation of the apparatus a.
Fig. 14, is a front elevation of the apparatus a arranged on a steam boiler, and
shown to a smaller scale.
Fig. 2, shows a transverse section of the apparatus a.
Fig. 3, is a front elevation of the apparatus barranged on a steam boiler with
one flue, and
Fig. 4, is a transverse section of the apparatus b.
Fig. 5. represents to a larger scale partly in section, a front elevation of the cam
disc for operating the feeding shovels for apparatus a.
Fig. 6. shows to a larger scale a section on the line -x through the coal
distributor of the apparatus a.
Fig. 7, is a longitudinal section or view of the mechanism for operating the coal
distributor for the apparatus of class a.
Upon the base plate 1 to be provided on the front plate of the boiler are
arranged brackets 2 in which is held the shaft 3 turned by spur wheels and by a
step pulley 5. The chain 6 with the well known tension roller 7 transmits the
motion of the shaft 2 to the cam shaft 8 adapted to turn in two brackets 10. This
shaft 8 carries a cam disc 9 the construction and operation of which will hereinafter
be described.
On the base plate 1 are moreover arranged the furnace doors 12 and the feeding
boxes 13 to be closed with covers 13º. In each of the sides of each feeding box, is
journalled a feeding-shovel shaft 14.
Inside the feeding box, each of these shafts 14, carries the feeding shovel 17,
and outside, on the opposite side of the lever arm 15 provided on the same shaft,
the tappet 18. To the crank arm 15 is attached a spring 16 fixed to the base
plate 1.
The feeding plate 19 in the feeding box is turned so as to correspond to the
circular movement of the feeding shovel, and the feeding shovel 17 has holes 20
in it, in order that during the swinging movement of the shovel the air may not be
pressed in any direction.
Moreover the feeding shovel is curved, so that the coal may not fall directly
upon the grate plate, but is received between the feeding shovel and
screen 21.
the
The swinging movement of the feeding shovels is caused by the tappets 18
sliding upon the adjustable eccentric cams 22 of the rotary cam disc 9 and being
thus alternately raised and lowered.
In this case the springs continually force the tappets 18 against the cams 22.
By the swinging movement of the feeding shovel the coal on the feeding plate 19
is thrown upon the grate.
The coal is transferred from the reservoir 25 or the coal box 24 in the following
manner:
On the can disc 9 are arranged projections or teeth 23. These teeth 23
alternately raise a lever 41 Fig. 7, turning loosely upon the shaft 14, by the small
friction roller 42 moving along the cam disc 9.
Above each end of the lever 41 is provided a small friction roller 38 which can
turn in a striking box 37 adapted to slide in the bracket 39. The striking box
embraces, so that it can slide, a squared shank 35 which terminates above in a
round left handed screw connected by a nut 35 with the lifting rod 34 provided
with right handed screw threads.
By turning this nut 36 the squared shank 35 is drawn higher or lower, so that
during the upward movement of the striking box 37 the upper edge of the latter
will reach more slowly or more rapidly the projecting point 35ª of the left-handed

page_text: screw thread, so that the lifting rod 34 will be raised more or less, independently
of the same upward movement of the lever 41.
Between the nut 36 and the striking box 37 is included a spring 40, in order
that the shock which the upper edge of the box 37 produces upon the projecting
point of the left handed screw thread of 35 shall as much as practicable be weakened
and rendered silent.
The lifting rods 34 are jointed at 33 to the rocking lever 32, the latter being
firmly secured upon a shaft 31 supported in the coal distributing box.
This shaft carries on the one hand an agitator 30, and on the other hand an
arm 29 with which it engages with the slot 28 (Fig. 6) in the rod 27 of the coal
distributor, this rod being adapted to move to and fro in the brackets 26.
This distributor rod carries on both sides the funnel shaped coal distributors or
sliding funnels 28" which transport the coal by jerks through the slots 28 on to the
feeding plates 19. By the raising and lowering of the lever 41 the rocking lever
is set in swinging motion, thereby imparting also to the rod a reciprocating
motion.
The coal transported in small quantities by the coal distributor on to the feeding
plate is thrown by the swinging feeding shovels 17 upon the grate, the eccentric
cams 22 being so placed relatively to the teeth 23 that after the feeding shovel 17
has swung forwards the funnel 28* moves forwards, a fresh quantity of coal being
thrown through the opening 28 on to the feeding plate.
When the feeding shovel 17 swings forward it bears against the screen 21; at
this moment the funnel 28 pushes the coal through the opening 28b, into the curved
part of the feeding shovel, and the latter in the following backward swinging
movement, empties the quantity of coal on to the feeding plate 19.
means coal can never fall directly from the coal funnel on to the feeding plate or
the grate.
By this
The doors 12 which serve for lighting the boiler furnace are closed upon the
furnace openings by planing or by fitting them on to edges 60, in such a manner
that during the operation no cold air can pass above the grate to the boiler.
Moreover the furnace doors are provided with spy holes 58 closed with glass plates,
and beat-protecting plates 59.
Figs. 3 and 4, in the drawing show the second constructional form of the
apparatus, that is to say, as before mentioned, for a boiler with only one flue.
In this case the operation takes place in like manner by the mechanism 2, 3, 4, 5
mounted upon the base plate 1 and which sets the cam disc 9, and thus as
previously described the feeding shovel 17 in swinging movement. The coal
distributor or the coal feeding device consists here of a conveyor 46 adapted to
turn in brackets 45 in the box 43, the shaft of the said conveyor being firmly
connected with a ratchet wheel 47. On the same shaft is loosely arranged a
lever 49 which in the swinging movement will, by the pawl 48, move the ratchet
wheel and therefore also, the conveyor by jerks. The lever 49 is here slotted and
carries an adjustable arm 51 which is in connection with the lever 50) likewise
slotted and sliding, as in the previous case, upon the cam disc 9, 23. By adjusting
the arm in the slots the movement of the ratchet may be changed at will, so that
the conveyor 46 will transport more or less coal on to the feeding plate.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed I declare that what
I claim is:
1. A mechanical grate feeding apparatus characterized by the curved feeding
shovels 17 to which a swinging movement is imparted by a cam disc 9 provided
with adjustable cams 22 and operated by a chain gear 6 with a tension roller 7, as
herein described and set forth.
2. The arrangement of air holes 20) in the feeding shovels 17, in order to avoid
air pressures in the feeding box during the swinging movement of the feeding
shovels, as herein described and set forth.

page_text: 3. In the apparatus characterized in Claims 1 and 2, the arrangement of a coul
feeding device, consisting of a distributing rod 27 adapted to slide backwards and
forwards in brackets 26, with sliding funnels 25 which are moved to and fro by a
rocking lever 33, arms 32, nuts 36, links 35 and striking boxes 37 through the
intervention of the levers 41, moved by the cam disc 9, as herein described and set
forth.
•
4. The arrangement of screens 21 in the feeding box 13, against which the
feeding shovels 17 bear in the forward swinging movement, in order to receive in
the curved part the quantity of coal moved forward by the sliding funnels 28*, and
to empty the same on to the feeding plate 19 in the backward swinging movement,
as herein described and set forth.
5. A. modification of the grate-feeding apparatus described in Claims 1, 2, 3,
and 4 for coal dust, characterized by the arrangement of a coal distributor,
consisting of a conveyor 46, which is actuated by jerks by a pawl 48; turning the
ratchet wheel 47, through the intervention of the adjustable lever mechanism 49, 50, 51
by the cam disc 9, as herein described and set forth.
Dated this 8th day of June 1895
S. S. BROMHEAD,
97 Newgate Street, London, Patent Agent.
S. S. BROMHEAD,
+97 Newgate Street, London, Patent Agent.