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Патент USA US2116744

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May 10, 1938. ‘
A. HUTTON
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2,116,744
STOKER
Filed April 19, 1934 '
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INVENTOR.
BY
ATTORNEY;
I
Patented May 10, 1938
2,116,744
* UNITED STATES
PATENT‘. OFFICE‘
2,116,744
‘ STOKER
Alfred Hutton, Erie, Pa., assignor, by mesne as
signments, to The Standard Stoker Company,
‘1110., New York, N. Y., a corporation of Dela
‘ ware
Application April 19, 1934, Serial No. 721,305
7 Claims. ' (Cl. 110—--10_1)
This invention relates to the class of stokers
that are particularly adapted to deliver fuel to
a furnace through the lower portion of an open~
ing in an upstanding wall thereof arranged to
permit power and manual feeding of the fuel.
pins l4, l5, journaled in the usual ?redoor frame '
F. These pins and the mechanism for operat
ing the door are‘of well known construction. It
seems sufficient to say here that any mechanism
may be used for opening the doors to expose the
More speci?cally it appertains especially to that
upper portion of the ?ring opening for hand ?r—
group of stokers in the aforesaid class wherein
the discharge mouth of the stoker does not ?ll
the entire ?ring opening in the furnace wall but
leaves a space above, which is closed by a ?re
ing or other purposes. ‘
door movable to permit hand stoking and inspec
tion of the ?re.
‘
It is, therefore, the main purpose of the inven
tion to provide an improved stoker, of the group
'
.
The stoker S, includes a riser conduit com
prising the discharge box I6 and the roof por
tion or cover H, which is composed of the rigid
end sections l8, Ilia, and the hinged central sec
tion IS. A forwardly opening mouth 20 is
formed by the‘discharge box and its cover. In
the lower portion of this mouth there is mount
speci?cally described, arranged with a ?redoor
ed a distributor plate 2| at the rearward side of i
to occupy a minimum of space at the ?ring open
ing and to permit the use of smaller ?ring open
which there is a distributor head 22 apertured
as at 23 for the discharge of pressure ?uid over
ings than heretofore employed.
the plate.
More speci?c objects of the invention contem
plate extending the ?redoor in a recess in the
upper end of the stoker conduit forward of the
distributor head, and providing a hinged cover
and novel fastening means in the roof of the
stoker conduit.
'
Other objects and advantages reside in the ar
rangement and relation of the parts as herein
after more fully described in connection with
mately along the line 24 and then spills or rolls
forwardly and downwardly over the distributor
head 22 onto the plate 2| in the zone of action
of the pressure fluid from the apertures 23. The 25
cover I‘! is positioned above the distributor head
22 a distance suf?cient to permit the fuel to freely
assume its angle of repose. ‘ It will be observed
the accompanying drawing, in which,
Figure 1 is a longitudinal central vertical sec
tional view through the upstanding wall of the
furnace and its ?ring opening with the ‘stoker
and ?redoor of this invention shown therein in
similar section but taken at a point slightly to
one side of the medial plane.
As the fuel advances in the discharge box l6,
it moves upwardly into the roof or cover portion
I‘! where it assumes an angle of repose approxi
‘
'
Figure 2 is an elevation of the structure shown
the highest point of the cover is at a level above
the lower half of the ?ring opening I I and slight- :
ly to the rear of the'head 22 and that from this
high point the cover slopes forwardly and down
wardly to meet the lower end of the ?redoor D at
a point forward of and above the distributor
head 22 and at a level below the upper half of
in Figure 1;
the firing opening II.
' Figure 3 is a vertical sectional view on the line
3—3 of Figure 1, and
'
a recess or indentation 25 in the upper side or
Figure 4 is a plan view of the parts shown in
40 section in Figure 3.
The drawing illustrates the invention as ap
plied to ‘a locomotive and for convenience of de
scription it will be so described. The terms
“front” and “rear” or equivalent expressions will
4.5 be employed with respect to the delivery of the
fuel.
On the drawing, l0 represents the upstanding
backwall of a locomotive furnace and the ?ring
opening is shown at H. Fuel is delivered to the
lower portion of this opening by the stoker indi
cated as a whole at S.
Above the stoker and
closing the upper portion of the firing opening
there is provided the ?redoor D, which comprises
the vertically divided sections l2 and I3 movable
laterally in opposite directions about the pivot
The ?redoor extends into
roof of the riser conduit adjacent to the back
wall II and its lower marginal edge is disposed
at or preferably below‘ theiiforward edge of the
cover H. In this construction there is sui?cient
space between the distributor head and the lower
edge of the door to permit the fuel to spill onto
the plate.
‘
With this arrangement ‘of the cover and the 45
?redoor it will be seen the cover serves as a stop
for the door against outward pressure such as
may be caused by a boiler explosion and that the
lower portion of the ?redoor protects the upper
portion of the cover from the heat of the ?re.
‘These are important safety features as the stoker
operators are protected more fully against the
danger of the ?redoor being blown off its hinges
and from being burnt by contacting a hot cover.
When the ?redoor D is open there is ample 55
2,116,744
space in the ?ring opening above the cover I‘!
for inspection of the ?re or for occasional hand
?ring. To provide additional space for access
to the ?rebox the central cover section l9 may
be thrown back about the hinges 26, thus creat
ing an opening extending from the upper edge
of the rear wall of the discharge box [6 to the
upper marginal edge of the ?ring opening ll.
The end sections l8, I8a will function as fuel
10 supporting and retaining walls preventing the
fuel from spilling out of the conduit when the
central section is in open position.
When closed the central cover section l9 rests
on the ledges 21, 21a extending inwardly from
15 the end sections I 8, “3a., which are bolted as at
28 to the discharge box IS. The central section
is latched to the end sections by the locking
members 30 disposed forward of the normal
angle of repose of the fuel.
20
39
.
As shown in Figures 3 and 4, the locking mem
b~er130 consists of ~a handle 31 having a hooded
stem or shaft 32 journaled in the cover section l9.
A latch- 33 is mounted on the stem and caused
to turn therewith by the use of a tapered pin 34.
The latch 33 engages a pad 35 on the under side
of the end section I8 ‘or I8a, to hold the central
section H3 in closed position. Underneath the
hood 32a on the stem 32, reposes a torsional
spring 36 coiled about the stem. One end of the
spring is seated in the stem as clearly shown in
Figure 4 while the other end is seated in the
cover end section l8 or 18a as best shown in
Figure 3. Hence, the latch 33 is normally held
against the lug 31 in engagement ‘with the pad 35.
35 The lug 38 acts as a stop in the opposite direc
tion against'movement of the latch 33 more than
su?icient to disengage the latch and the boss.
Thus, the central cover section is ?rmly locked in
closed position but may be opened readily when
desired.
.
‘
The locking members 30 are protected from the
heat by the lower projecting portion of the ?re
door D. There is, therefore, no danger of injury
whenthe locking members are manipulated to
lock or un-lockthe central cover section.
From the foregoing it will be recognized that
the invention provides a compact arrangement of
a stoker and ?redoor permitting the use of smaller
?ring openings than heretofore employed with
5.0 stokers of the class described, while at the same
time affording ample space for hand ?ring as well
as access to the ?rebox'and without obstructing
the delivering of fuel from the riser conduit onto
the distributor plate. The arrangement of the
55 parts has the further advantage of protecting the
roof or cover of the riser conduit and its locking
members from the heat of the ?re.
I
claim:
’
'
leaving an opening between the end sections ex
tending forwardly to the ?redoor whereby when
the latter is opened the aforesaid opening be
tween the end sections communicates with the
?ring opening in the furnace backwall.
2. In combination, a furnace having an up
standing backwall with a ?ring opening therein
for hand and power feeding of fuel therethrough
into the furnace, a riser conduit of a stoker
mounted exteriorly of the furnace and having a 10
forwardly opening mouth in communication with
the lower portion of the ?ring opening, said con
duit including a roof the highest point of which
is at'a level above the lower half of the ?ring
opening, said conduit having a recess in its upper
portion adjacent said backwall of the furnace and
extending below the upper half of the ?ring open
ing, and a ?redoor mounted on said backwall clos
ing that portion of the ?ring opening above said
roof and arranged with its lower edge received in 20
said recess, said roof being divided longitudinally
into ?xed end sections and a movable central sec
tion, said central section being hinged at its rear
ward edge to swing away from said ?redoor and
when in such ‘position leaving an opening be 25
tween the end sections extending forwardly to
said recess whereby when the ?redoor is opened
the aforesaid opening'between the end sections
communicates with the ?ring opening in the fur
nace backwall, said'?redoor comprising a pair of
door members movable laterally away from each
other in a plane substantially parallel to said
backwall and arranged with each door member
adjacent a ?xed end section of the roof.
3. In combination, a furnace having an up
35
standing backwall with a ?ring opening therein
for hand and power feeding of fuel therethrough
into the furnace, a riser- conduit of a stoker
mounted exteriorly of the furnace and having a
forwardly opening mouth in communication with
the lower portion of the ?ring opening, a distribu
tor plate disposed in said mouth and extending
into the lower portion of the?ring opening, a
distributor head positioned at the rearward side
of said plate in front of the fuel stream advanc 45
ing upwardly in said riser conduit and being
spaced outwardly from said backwall, said riser
conduit including a roof extending over said dis
tributor head at a height above sufficient to per
mit the advancing fuel stream to freely assume an 50
angle of repose and spill forwardly onto said plate
and a ?redoor forming a closure for that portion
of the ?'ring opening above said roof, said riser
conduit having a recess in its upper portion adja
cent said furnace backwall receiving the lower 55
edge of said ?redoor, the lower marginal edge of
the ?redoor being positioned in said recess at a
'
luIn combination, a furnace having an up
60 standing wall with ‘a'?ring opening therein for
hand and power feeding'of fuel therethrough into
the furnace, a riser conduit of a stoker mounted
exteriorly of the furnace and having a mouth in
communication with the lower portion of the
65 ?ring opening, and a ?redoor mounted across the
upper portion of said ?ring opening operable to
permit hand ?ring of fuel, said riser conduit hav
ing a detachable roof, said roof being divided
longitudinally into laterally spaced end sections
70 rigidly secured to the riser conduit and a mov
able central section, each of said sections being
arranged with their front edges adjacent the
lower end portion of said ?redoor, said central
section being hinged at its rear edge to swing
75 away from said ?redoor and when in such position
level below the front edge of said roof and above
and forward of said distributor head.
4. In combination, a furnace having an up
standing backwall with a ?ring opening therein
for hand and power feeding of fuel therethrough
into the furnace, a riser conduit of a stoker
mounted exteriorly of the furnace and having a
forwardly opening mouth in communication with 65
the lower portion of the ?ring opening, a dis
tributor plate disposed in said mouth and ex
tending into the lower portion of the ?ring open
ing, a distributor head positioned at the rearward
side of said plate in front of the fuel stream ad 70
vancing upwardly in said riser conduit and being
spaced outwardly from said backwall, said riser
conduit including a roof extending over said dis
tributor head at a height above su?icient to per
mit the advancing fuel stream to freely assume 75
2,116,744
an angle of repose and spill forwardly onto said
plate, a ?redoor forming a closure for that por
3
standing backwall with a ?ring opening therein
for hand and power feeding of fuel therethrough
tion of the ?ring opening above said roof, said
into the furnace, a riser conduit of a stoker
riser conduit having a recess in its upper portion
mounted exteriorly of the furnace and having a
mouth in communication with the lower portion
adjacent said furnace backwall receiving the
lower edge of said ?redoor, the lower marginal
edge of the ?redoor being positioned in said re
cess at a level below the front edge of said roof
and above and forward of said distributor head,
10 said roof comprising rigid end sections and a
central section hinged at its rearward edge to
swing away from the furnace backwall, and
latches engaging the central section with the end
sections, said latches being disposed adjacent the
15 highest point of the roof at a level above the lower
marginal edge of the ?ring opening.
5. In combination, a furnace having an up
standing backwall with a ?ring opening there~
in for hand and power feeding of fuel there
through into the furnace, a riser conduit of a
stoker mounted exteriorly of the furnace and
having a mouth in communication with the low
er portion of the ?ring opening, said conduit hav
ing a recess in its upper portion adjacent the
backwall of the furnace, a ?redoor mounted on‘
said backwall forming a closure for the upper
portion of the ?ring opening and arranged with
its lower edge received in said recess, said riser
conduit having a detachable roof the forward
30 edge of which de?nes in part the rear portion of
the edge of said recess and lies adjacent the lower
portion of the ?redoor, said roof being divided
longitudinally into laterally spaced end sections
rigidly secured to the riser conduit and a mov
able central section, said central section being
hinged at its rear edge to swing away from said
?redoor and when in such position leaving an
opening between the end sections extending for
wardly to said recess whereby when the ?redoor
40 is opened, the aforesaid opening between the end
sections communicates with the ?ring opening
in the furnace backwall.
6. In combination, a furnace having an up
of the ?ring opening, a, ?redoor mounted on said
backwall forming a closure for the upper portion
of the ?ring opening, said conduit being provided
in its upper portion adjacent its delivery end with
a detachable roof, said roof being divided longi
tudinally into laterally spaced end sections and
a central section, each of said sections at their
forward edges being adjacent the lower portion
of said ?redoor, said central section being hinged
at its rearward edge‘to the riser conduit to swing
away from said backwall.
'7. In combination, a furnace having an up
standing backwall with a ?ring opening therein
for hand and power feeding of fuel therethrough
into the furnace, a discharge conduit of a Stoker
having a forwardly opening mouth in communi
cation with the lower portion of the ?ring open
ing, a distributor plate disposed in said mouth
and extending into the lower portion of the ?r
ing opening, a distributor head positioned at the
rear of said plate and spaced outwardly from
said backwall, said discharge conduit having a
recess in its upper portion adjacent said furnace
backwall, a ?redoor forming a- closure for the
upper portion of the ?ring opening, the lower
edge of said ?redoor being received in said recess,
the upper portion of said discharge conduit rear
ward of said ?redoor forming a detachable roof
comprising ?xed end sections and a movable cen
tral section disposed between the end sections, .
the lower marginal edge of the ?redoor being
positioned between said backwall and the for
ward edge of said roof and at a level below the
forward edge of said roof, said movable cen
tral section being hinged to the discharge conduit 40
to swing rearwardly from the delivery end there
of.
ALFRED HUTTON.
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