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Патент USA US2075737

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March 30,-_1937.
c. J. SURDYv _
2,075,737
LOCOMOTIVE STOKER
Filed May 26, 1934
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' 2 Sheets-Sheet l‘
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“Elm
' INVENTOR.‘
BY
ATTORNEY.
March 30,‘ 1937._
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‘ c. J. SU’RDY
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LOCOMOTIVE
' 2,075,731
STOKER
>
Filed May 26, 1954
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2 Sheets-‘Sheet 2
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INYENTOR.
BY ’ @ZZQf/éS J?uz'
ATTORNEY.
‘
2,075,737
Patented Mar. 30, 1937
‘UNITED STATES PATENT OFFICE
2,075,737
LOCOMOTIVE‘ STOKER
Charles J. Surdy, Tuckahoe,'N. Y., assignor, by
mesne assignments, to The Standard Stoker
Company, Inc., New York, N. Y., a corporation
of Delaware
'
Application May 26, 1934, Serial No. 727,624
9 Claims. (Cl. 110-101)
My invention relates to stokers for locomotives
and the like and it appertains particularly to
improvements in the feeding of fuel to the dis
Figure '7 is a view similar to Figure 1, showing
a modi?cation; and
Figure 8 is a sectional view taken on the line
tributing means as well as in the distributing
5 means itself.
8--8 of Figure '7.
Throughout the description and claims the
Speci?cally, my invention relates to stokers
terms “forward” and “rearward” as applied to
parts of the stoker are used relative to the di
rection of delivery of the fuel.
Referring now to Figures 1 to 6, inclusive, the
boiler is shown at l0, its ?rebox at H, and the
backhead at l2 having a ?ring opening l3
of the character shown in the United States Let
ters Patent No. 1,947,723 granted February 20,
1934, to Nathan M. Lower. Accordingly an ob
10 ject of my invention (is to provide, in a stoker of
the patented type, a modi?cation wherein the
fuel is urged over a plate member forming a
separable bottom for the stoker discharge mouth
and being separate also from the chambered jet
15 member therebeneeith, from which jet member
the pressure ?uid blasts are discharged for prcpelling the fuel into the ?rebox.
Anether Object of the invention contemplates
extending the aforesaid plate member beyond
20 and above the Point Of discharge of the pressure
?uid blasts of the jet member; and Still another
object is the provisicnof such a plate member
adjustably movable longitudinally of the conduit
to Very its relative Position With the Point Of
25 discharge of the pressure ?uid blasts.v
.
?ne and coarse fuel.
shown as is necessary to a complete understand
ing of the invention. The Stoker mechanism in
cludes an inclined conduit In which leads for
wardly from a source of fuel supply and is pro
videdgwith a laterally?ared discharge mouth [5
in communication with the ?ring opening l3 for
delivering fuel thereto. Flanges l6 are provided .
at the side walls I 7 of the discharge mouth I5
for securing the conduit M to the backhead I 2.
The bottom Wall l8 of the discharge mouth It
is recessed as at [9, this recess preferably being
wider at its forward end than at the rearward
A further object of my invention is the preViSiOH in the above described plate member of
Spaced ?ngers in the forward end thereof DOSitioned at or forward of the point of discharge of
30 the pressure ?uid blasts to sheet a separation of
the ?ne from the coarse fuel. In carrying Out
thiS Object I Provide relatively low'and high presSure propelling blasts acting respectively On the
35
therethrough. Fuel is delivered to the ?rebox by
suitable stoker mechanism, only so much being
~
end thereof. The bottom wall I8 is disposed in
Wardly from each side wall I‘! so that it forms a
shelf 20 at each side wall. From the underside
of each shelf :0 depends a, ?ange 2| which ex
tends longitudinally of the locomotive. These 30
?anges 2| are spaced one at each side of the re
cess l9 and are disposed parallel to each other,
forming a guide for the plate member 22, as will
presently appear.
Other Objects reside in the provision of the
particular means of shifting the plate member
This plate member 22 comprises a relatively
thin portion 23 which ?ts snugly between the
longitudinally of the _St°ker conduit, the atta(fh'
ment means for thegwt member and the spect?c
formation of the various parts and their coaction
?anges 2| at the undersides of the shelves 20 to
form a ?oor for the recessed portion of the dis
charge mouth I 5_ Immediately beneath the
40 one with another as will become apparent from
the following speci?cation when read in con-
thi
.
m0
n por
n o
f thi
1 t
S p a e‘me
mb
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h
b
d
er 1S a‘ 0.3m ere
nection with the accompanying drawings, in
Jet member 24, the upper wall 25 of which forms
which,
a rest for the underside of the plateemember 22.
Figure 1 is a fragmentary central vertical sec-
The chambered jet member 24 is Secured betw?“
45 tion through the rear portion of a locomotive
the ?anges 2' by means of bolts 25 Passmg
with the stoker feed conduit in which my ,invention is embodied in similar section;
Figure 2 is a plan section taken on the line
2——2 of Figure 1;
'
through the named ?anges and engaging the
chambered jet member. At its forward end, the
jet member rests upon lugs 21 which project in
wardly from the ?anges 2|. Thus the plate
50
Figures 3, 4 and 5 are sectional views taken
member 22 is mounted in grooves which are 50
on the line 3-—3, line 4—4 and line 5-5, respec
formed by the spaced parallel ?anges 2|, the
tively, of Figure 1;
inward projections 20a of the shelves 20 which
de?ne the recess 19, and also by the upper wall
25 of the jet member 24, the top surface of this
upper wall being spaced below the under sidev of 55
Figure 6 is a view of the structure shown in
Figure 1 as seen from the interior of the locomo
55 tive ?rebox;
2
2,075,737
the inward projections 20a as clearly shown in
Figure 3.
The chambered jet member 24 is provided with
a transverse front face 28 extending practically
across the entire width of the discharge mouth
l5 and preferably adjacent the outer surface of
the backhead | 2. Pressure ?uid is supplied to
block 49. The block 49 forms a bearing 59 for
the shaft portion 5| of a threaded stem 52 which
is screwed into a lug 53 carried by the conduit I4.
Whenever it is desired to move the plate mem
ber 22 longitudinally of the conduit, this can be
done by turning the threaded stem 52 by means
of the hand wheel 54, moving the block 49 and
the chambers such as 29, of which there are sev
the pin 41 in a straight line, transversely with
eral, through intakes 39 which register with slots
10 3| in the ?anges 2| to permit a pipe 32 to be
threaded into each intake. Each pipe 32 leads
from a source of pressure ?uid and is usually pro
vided with suitable valve means for the inde
pendent control of pressure.
Fuel is advanced through the conduit M by a
conveyor screw 33, which preferably terminates
adjacent the rearmost edge of the recess I9. The
screw 33 urges fuel through the discharge mouth
I5 along the upper surface of the plate member
20 22, the forward edge 34 of which extends a sub
stantial distance forward of the front face 28 of
the jet member and above the fuel receiving sur
face 35 of the distributor table 36. Within the
mouth portion | 5 are the independently operable
25 de?ector vanes 31, one at each side of the stream
of fuel, for diverting the fuel to various portions
of the distributor table fuel receiving surface 35.
The forward portion of the plate member 22 is
provided with a plurality of indentations 38,
30 which extend rearwardly from the forward edge
34 to form a plurality of ?ngers 39. Smaller
particles and granules of fuel fall downwardly
through the indentations 38 while the larger
lumps pass over the ?ngers 39 and drop over the
‘ edge 34 onto the fuel receiving surface 35 of
the distributor table 36. Low pressure blasts of
pressure ?uid emanating from the lower jet open
ings 49 in the front face 28 sweep across the
table 36. The jet openings 49 are drilled in the
front face 28 of the jet member 24 so that there
is a jet opening for issuing a blast of pressure
?uid beneath a respective indentation 38 in order
to propel the smaller particles of fuel into the
?rebox. In a plane above the jet openings 49 are
45 the relatively larger jet openings 4| drilled in
the front face 28 so that there is a jet opening 4|
beneath a respective ?nger 39, and since the
blasts issuing fromrthese openings issue blasts of
pressure fluid of greater volume or greater effec
50 tive pressure, they serve to project the larger
lumps of fuel passing over the ?ngers 39.
Since the front face 28 of the chambered jet
member 24 is‘ adjacent the outer surface of the
backhead l2, means are provided on the distrib
utor table 36 for de?ecting a portion of the fuel
laterally toward the rear corners of the ?rebox.
Accordingly, each forward side portion of the
table 36 is provided with a channel 42 and a
60
curved rib 43 for intercepting and laterally de
?ecting a portion of the fuel projected by the
pressure ?uid blasts. The distributor table 36
may be attached to the stoker conduit M by
means of the bolts 44 engaging ?anges 45, one at
each side of the table.
65
Preferably, the plate member 22 is movable
longitudinally of the conduit M to vary the
heighth from which the fuel drops onto the table‘
36 and to adjust the position of the forward edge
34 with respect to the point of discharge of the
pressure ?uid jets emanating from the front face
28. For this purpose, the lower or rearward end
of the plate member 22 is provided with an
oblique slot 46 which is engaged by apin 41. The
upper portion of the pin 41 is provided with a
75 shoulder 48 while the lower portion engages 2»
respect to the conduit l4.
Inward movement of
the stem 52 and the corresponding movement of 10
the block 49 and the pin 41 will cause the plate
member to be retracted from the ?ring opening
[3, by reason of the engagement of the pin 41
with the oblique slot 43, while outward movement
of the stem 52 and the corresponding movement
of the aforesaid associated parts will move the
plate member 22 forwardly and upwardly with
respect to the jet face 28.
In the operation of the structure described,
fuel is conveyed forwardly and upwardly in the
conduit M by the screw 33 onto the plate member
22 over which it is advanced to the forward edge
34 where the fuel then falls between the ?ngers 39
or passes over them to drop a distance variable
by adjustment of the plate member toward or
onto the distributing table 35 at a point forward
of the point of discharge of the pressure ?uid jets
issuing from the jet openings 4!), 4|. The pres
sure ?uid jets act upon the falling fuel to propel
it forwardly across the table 36 and cooperate 30
with the channels 42 and the ribs 43 to spread the
fuel over the ?rebed of the ?rebox. In falling
toward the table 36, the fuel assumes a dispersed
or diffused condition, tending to break up any
globular or coherent formations, thus making
possible the use of lower propelling jet pressures
and insuring more even distribution of the fuel
over the ?rebed. Preferably the fuel drops for
ward of the front face 28 of the jet member at a
point where it will be acted upon by the spread 40
ing conical formation of the jets at the point of
highest effective intensity. This also permits the
use of lower jet pressures and has the further ad
vantage of eliminating the possibility of plugging
the jet openings 49 and 4| as sometimes happens
when the fuel is placed on the distributing table
immediately in front of them.
Adjustment of the plate member 22 is partic
ularly advantageous in that the position of the
forward edge of the plate member with respect
to the table 36 and the point of discharge of the
pressure ?uid jets may be varied to meet all con
ditions of service. In the broader aspects of
the invention, the plate member 22 constitutes
a removable wear plate protecting the chambered in c1
jet member 24 against any abrasive action of the
fuel.
In the modi?ed form of my invention, illus
trated in Figures '7 and 8, the conveyor screw 60
extends forwardly to a point beyond the rear 60
most edge of the recess I9, and it will be observed
that a portion 6| of the ?nal turn of the screw
?ight 62 may be of the same radius as the rear
ward ?ights, but does not bear upon the thin
plate portion 23d of the plate member 22a. In
this form of the invention, the forward portion
of the plate member 220. is not provided with the
fuel separating ?ngers and indentations of the
preferred construction. It is also contemplated
that the chambered jet member 24 may be car
ried by the conduit M or an equivalent bracket
formation by means of a single bolt 33 passing
through the ?anges 2|. In all other respects,
this form of my invention is identical with the
preferred form.
'
2,075,787
These and other. modi?cations are considered
to‘be within the spirit of my invention as de
?ned in the appended claims.
’
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I claim:
3
with a ?ring opening therethrough, of a stoker
conduit outside the furnace for delivering fuel
thereto, said conduit including a discharge mouth
in communication with said ?ring opening, the
bottom of said discharge mouth being recessed
1'. The combination in alfurnace having a wall
with a ?ring opening therethrough, of a stoker
conduit outside the furnace for delivering fuel
thereto, said conduit including a discharge mouth
mouth forming a closure for the opening therein,
incommunication with said ?ring opening, the
a pressure ?uid jet member at the underside of
r510 bottom of said discharge mouth being recessed
to provide an opening therein, a separate plate'
member at the recessed portion of said discharge
said plate member, said jet member having a 10
to provide an opening therein,‘ a separate plate
front face provided with jet openings for issuing
member at the recessed portion of said discharge
mouth forming a closure for the opening there
in,‘said plate member being arranged for adjust
"15 able movement longitudinally of the stoker con
blasts of pressure ?uid for projecting fuel toward
the furnace, such blasts of pressure ?uid consti
tuting the sole means for projecting fuel toward
the ?rebox, the plate member having a forward
portion extending beyond the front face of said
jet member and being provided in the aforesaid
portion with. separated indentations forming a
plurality of fuel separating ?ngers, a distributor
table at said ?ring opening extending forwardly
from said jet member, said jet member being sep
arate from said plate member and arranged to
duit, a pressure ?uid jet member at the under
side of said plate member, a distributor table at
said ?ring opening extending forwardly from
said jet member, said jet member being separate.
from said plate member and arranged to issue
blasts of pressure ?uid over said distributor table,
and means for urging fuel through said con
duit and along said plate member onto said dis
tributor table into the zone of action of the pres
' sure ?uid blasts.
issue blasts of pressure ?uid through an upper
and a lower row of jet openings in its front face
over said distributor table, and means for urging
fuel through said conduit and along said plate
member, the smaller particles of fuel falling
conduit outside the furnacefor delivering fuel through said indentations of said plate into the
thereto, said conduit including a discharge mouth zone of action of the pressure ?uid blasts issuing
30 in communication with said ?ring opening, the
from the lower row of jet openings and the larger
bottom of said discharge mouth being recessed lumps falling over the ?ngers into the zone of
a‘ 2. ‘The combination in a furnace having a wall
withai‘?ring opening therethrough, of a stoker
to provide an opening therein, a separate plate
action of the pressure ?uid blasts issuing from
member at the recessed portion of said discharge
the upper row of jet openings.
5. The combination in a furnace having a wall
with a ?ring opening therethrough, of a stoker
conduit outside the furnace for delivering fuel
thereto, said conduit including a discharge mouth
in communication with said ?ring opening, the
bottom of said discharge mouth being recessed
to provide an opening therein, a separate pla‘e
member at the recessed portion of said discharge
mouth forming a closure for the opening therein,
mouth forming a closure for the opening therein,
said‘ plate member being arranged for adjust
able movement longitudinally of the stoker con
‘duit,’a pressure ?uid jet member at the underside
ofv said plate member, said pressure ?uid jet
memb'er‘being- *deta'ch‘abljr carried by said stoker
conduit, a distributor table at said ?ring open
ing extending'forwardly from said jet member,
said jet member being separate from said plate
member and arranged to issue blasts of pres
sure ?uid over said distributor table, and means
for urging fuel ‘throughjsaid conduit and along
said plate member'onto said distributor table into
the’zone‘ of action of the pressure ?uid blasts.
3. The combination in a furnace having a wall
with a ?ring opening therethrough, of a stoker
conduit outside the furnace for delivering fuel
thereto, said conduit includinga discharge mouth
incommu'nication with said ?ring opening, the
‘bottom of said discharge mouth being recessed
to provide an opening therein, a separate plate
55 member at the recessed portion of said discharge
50
mouth forming a closure for the opening therein,
said plate member being arranged for adjustable
movement longitudinally of the stoker conduit, a
pressure ?uid jet member at the underside of said
V60 plate member, said jet member having a front
face provided with jet openings directed toward
the furnace, the forward edge of said plate mem
ber extending beyond the front face of said jet
member, a distributor table at said ?ring open
ing extending forwardly from said jet member,
said jet member being separate from said plate
member and arranged to issue blasts of pressure
?uid through the jet openings in its front face
over said distributor table, and means for urging
70 fuel through said conduit and along said plate
member, the fuel falling over the front edge of
said plate member in advance of the front face
of said jet member into the zone of action of the
pressure ?uid blasts issuing therefrom.
75 4. The combination in a furnace having a wall
a pressure ?uid jet member at the underside of
said plate member, said jet member having a front
face provided with jet openings for issuing blasts 45
of pressure ?uid for projecting fuel toward the
furnace, such blasts of pressure ?uid constitut
ing the sole means for projecting fuel toward the
?rebox, the plate member having a forward por
tion extending beyond the front face of said jet
member and being provided in the aforesaid por
tion with separated indentations forming a plu
rality of fuel separating ?ngers, a distributor table
at said ?ring opening extending forwardly from
said jet member, said jet member being separate 55
from said plate member and having a front face
provided with a plurality of jet Openings directed
toward the furnace and including an upper and
a lower row of jet openings for issuing blasts of
pressure ?uid over said distributor table, the jet 60
openings of the upper row arranged to issue blasts
of pressure ?uid beneath said ?ngers, and the jet
openings of the lower row arranged to issue blasts
of pressure ?uid beneath the indentations of said
plate member, and means for urging fuel through 65
said conduit and along said plate member, the
smaller particles of fuel falling through said in
dentations of said plate member into the zone
of action of the pressure ?uid blasts issuing from
the lower row of jet openings and the larger lumps 70
falling over the ?ngers into the zone of action
of the pressure ?uid blasts issuing from the upper
row of jet openings.
6. The combination in a furnace having a wall
with a ?ring opening therethrough, of a stoker 75
4
2,075,187
conduit outside the furnace for vdelivering fuel
chambered jet member-adjacent the discharge
thereto, said conduit including a discharge mouth
mouth of said conduit,‘said jet member including
in communication with said ?ring opening, the
bottom of said discharge mouth'being recessed
15 to provide an opening therein, a separate plate
member at the recessed portion of said discharge
a front face at the?ring opening and'having-a
mouth forming a closure for the opening therein,
said plate member being arranged for adjustable
movement longitudinally of the stoker conduit,
'10 a pressure ?uid jet member at the under side of
said plate member, said jet member having a
front face provided with jet openings for issuing
blasts of pressure ?uid for projecting fuel toward
the furnace, the plate member having a forward
15 portion extending beyond the front face of said
jet member and being provided in the, aforesaid
portion with separated indentations forming a
plurality of fuel separating ?ngers, a distributor
table at said ?ring opening extending forwardly
‘20 from said jet member, said jet member being sep
arate from said plate member andarranged to
issue blasts of pressure fluid through an upper and
a lower row of jet openings in its front face over
said distributor table, and means for urging fuel
25 through said conduit and along said plate mem
ber, the smaller particles of fuel falling through
said indentations of said plate into the zone .of
action of the pressure ?uid blasts issuing from the
lower row of jet openings and the larger lumps
30 falling over the ?ngers into the zone of action
of the pressure ?uid blasts issuing from the uppe
row of jet openings.
-
7. The combination in a furnace having a wall
with a ?ring opening therethrough, of a stoker
35 conduit outside the ‘furnace for delivering fuel
thereto, said conduit including a discharge mouth
in communication with said ?ring opening, a
chambered jet member adjacent the discharge
mouth of said conduit, said jet member includ
'40 ing a front face at the ?ring opening and hav
ing a plurality of jet openings directed toward
the furnace for issuing blasts of pressure ?uid, a
distributor table at said ?ring opening extending
forwardly from said jet' member beneath the
plurality of jet openings directed toward the-fur
nace for ‘issuing blasts of pressure ?uid, a dis
tributor table at said ?ring opening extending
forwardly from said jet member beneath the
pressure ?uid blasts, and a plate member at the
discharge mouth of said conduit forming a floor
for the fuel at the outlet thereof and includingla .10
portion extending forwardly beyond the front
face of said jet member, said plate member being
adjustably movable fore and aft with respect to
said front face, said portion being provided with
separating ?ngers, and means for urging fuel
through said conduit, the smaller particles :of
fuel falling through said indentations and the
larger lumps falling over the forward edge'of
said ?ngers onto the distributor table in advance
of the front face of said jet member.
120
_ 9. The combination in a furnace having a wall
with a ?ring opening therethrough, of a jet mem
ber at said ?ring openinggsaid jet member hav
ing a front face apertured to discharge pressure
?uid blasts into the furnace, conveying ‘means 25
for delivering fuel into the zone of action‘of the
pressure ?uid blasts issuing from said jet'mem
ber, such pressure ?uid blasts being the sole
means for projecting fuel into the ?rebox, and a
distributor table at said ?ring opening'extending 30
forwardly from said jet member beneath the
pressure ?uid blasts, said conveying means in
cluding a plate member having a fuel supporting
surface extending forwardly and upwardly to
ward the furnace to a point short of .theforward 35
end of said distributor table and forward of and
a substantial distance above the level of ‘the
uppermost edge of the front face of said jetmem
ber, said plate member ‘being provided in the
forward portion thereof with separated indenta 40
tions forming ‘a plurality of fuel separating ?n
gers, said jet member being arranged to issue
blasts of pressure ?uid across said distributor
table through an upper and a lower row of jet
45 pressure ?uid blasts, and a plate member at the
openings in the front face of said jet member,
discharge mouth of said conduit forming a ?oor
and means for urging fuel through said conduit
for the fuel at the outlet thereof and being ad
and along said fuel supporting surface, said jet
openings and fuel separating ?ngers being'so ar-‘
ranged that smaller particles of fuel will fall be
justably movable fore and aft withrespect to said
conduit, said plate member having a portion ex
50 tending forwardly beyond the front face‘of said
jet member.
tweensaid ?ngers into the zone of'action of the
pressure ?uid blasts issuing from the lower row
8. The combination in a furnace having a Wall
of jet openings and the larger lumps will fall
with a ?ring opening therethrough, of a stoker
conduit outside the furnace for delivering fuel
55 thereto, said conduit including a discharge mouth
in communication with said ?ring. opening, a
over the forward end of said ?ngers into the
zone of action of the pressure ?uid blasts-issuing
from the upperrow of jet openings.
CHARLES J. SURDY.
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