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Патент USA US2127338

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Aug..` 16, M38.
J. B. MacKENzaE
LOCOMOTIVE STOKER
Original Filed Jan. 23, 1935
¿127,338
Patented Aug. 16, 1938
2,127,338
` UNITED STATES
PATENT OFFICE
2,127,338
LOC‘OMO TIVE STOKE‘Rr
`loseph B. MacKenzie, Erie, Pa., assignor, by_
mesne assignments, to The Standard Stoker
Company, Inc., New York, N. Y., a corporation
of Delaware
Original application January 23, 1935,` Serial No.
3,058. Divided and this application January
28, 1937, Serial N0. 122,723
5 Claims.
An object of this invention is to provide in a
locomotive Stoker, a new and improved mounting
for the conveyor element thereof which extends
from beneath the tender fuel bin to the loco
motive.
It is a further object of this invention to pro
vide a new and improved conveyor for a locomo
tive stoker comprising a fixed conduit section on
the locomotive and a movable conduit section on
10 the tender, the latter at one end being universal
ly connected to the former and permitting longi
tudinal movement therebetween and at its re
mote opposite end being mounted for universal
movement within a spherical seat.
15
Other objects and advantages of this inven
tion, such as the novel construction of the parts
affording the necessary support for the movable
conduit, and the relation of such parts one with
another, will become apparent as the following
specification is read in connection with the ac
companying drawing, in which,
Fig. l is a central longitudinal vertical sec
tional view through the rearward portion of a
locomotive and the forward portion of its tender
25 illustrating the invention applied thereto partly
in similar section and partly in elevation;
2 is a plan view of the forward end of the
Stoker of the invention with the ñrebox backhead
shown in section;
30
Fig. 3 is a sectional view taken on the line 3_3
of lâï‘ig.v l;
Fig. 4 is an enlarged View in elevation of the
forward end portion of the movable conduit sec
tion provided with the hinged cover at the uni
3.5 versal joint; and
Fig. 5 is a transverse sectional view taken on
the line 5_5 of Fig. l, showing the spherical seat
like support for the movable conduit section.
Referring to the drawing, the locomotive I0
40 is provided with a boiler ñrebox Il, having the
gratey I2, a backhead I3, and a cab I4 having
the deck or floor I5. The backhead I3 comprises
the inner sheet I6 and the outer sheet I1 ar
ranged to form the vertically elongated ñring
45 opening I8 extending above and below the cab
deck I5 and spaced above the mud ring I9.
Rearward of the locomotive IIJ the tender is
indicated at 2i). It is of ordinary construction
having the frame 2l, the fuel bunker 22, and the
deck or iioor 23 which carries the usual slide
plates 24.
These slide plates control the flow of
the fuel from the fuel bunker into the stoker S
which is of novel construction and now will be
described.
The stolzer S includes a conveyor 25 leading
(c1. 19a-15)
forwardly from the tender> 20, and afuel delivery
conveyor 26 which'receives'fuel from `the con
veyor 25 and delivers it to a point above the grate
I2 for distribution. 'Comprising-the conveyor 25
is the open mouth trough 21 mounted beneath 5
the tender deck 23 `to receive fuel from the bunk
er 22 through a central aperture 29 in the deck
23, the size-of this aperture being controlled by
the shiftable plates» 24;» Extending forwardly
from the trough 2l and rigid therewith is a tubu
lar conduit 3l which `»terminates -at‘its forward
end beneath the locomotive cab deck I5 and> has
loosely telescoped over its forward endv a sleeve
like’ conduit- 32. At its, forward end the latter
conduit is provided with'a spherical member 33
which is received in the spherical seat 34 of the
fuel delivery conduit 35. ‘ A‘clamp 35 retains the
spherical member'33Á in its seat 34 to forma
universal joint connection 3l between the fuel
delivery conduit 35 and the sleeve-like conduit 32. ,
The means for conveying fuel » through the
stoker includes a conveyor- screw 45 having a por
tion thereof‘within the tro-ugh 21 and extending
forwardly therefrom through the tubular conduit
3| to a point adjacent the universal connection
3f between the fuel delivery conduit 35 and the
sleeve-like conduit'32.~At its forward end, the
conveyor screw 45 is provided with a jaw 45 which
is connected to the jaw 41 of the fuel delivery
screw 48 in the conduit 35 by means of pins 49
and ablock 5|] to form a universal joint 5I be
tween the conveyor screws 45 and 48. 'I‘he con
veyor screw 45 is driven’from its rearward end
by the gearing within the gear casing 38 and con
veys forwardly the fuel which falls into the trough :3.3
2l from the bunker 22, the fuel being urged
against the teeth 52 of a crusher 53 and reduced
to a size suitable for efficient firing. The brushed
fuel is theny conveyed >forwardly by the conveyor
screw 45 to the delivery conduit 35 where the .
screw `48 urgesA the fuel through the upwardly
opening mouth 54 of the fuel delivery conduit 35
into Athe zone of action of the distributor mem
ber 55 which projects the fuel to all parts of the
ñrebed.
.
I.
45
At times itis necessary to disconnect the con
veyor screw 45 andthe fuel delivery screw 48,
as for instance when the pins49 or block 5l] are
worn to an extent that their replacement is
essential.-l Thiscan be readily .accomplished by ño
an arrangement of parts whichineludes a remov
ably hinged upper forward section 56 of the sleeve
like conduit 32, which section includes, as an
integral part, a portion of the spherical member
33. The section 56 is hinged to the sleeve-like 55
2
2,127,338
conduit 35 by means of a lug 51 which engages a
a longitudinally extending axis is prevented by
bolt 58 passed through the spaced ears 59 of the
conduit 32. Lateral movement of the section 56
with reference to the conduit 32 is prevented by
providing a seat 60 in the edges of the conduit 32
which are contiguous to the edges of the section
56. The edges of the section 56 are received in
providing the gear casing 38 with laterally pro
jecting flanges 43, one at each side of the spheri
cal member 40, each flange 43 resting upon a
rail 44 formed at each lateral extremity of the
bracket 42 and having a convexly curved upper
surface. By the described construction, together
the seat 60 and its lower portion extends below
the horizontal medial plane of the conduit 32
with the universal joint connection 31 and the
telescopic sleeve-like conduit 32, it will be appar
10 whereby removal of the pins 49 is facilitated.
Upward displacement of the section 56, under nor
mal operating conditions, is prevented by reason
of the clamp 36 which is secured to the delivery
conduit 35 over the section 56 and by providing
15 this section with a rearwardly extending lug 6I
on its upper side which fits beneath the ledge 62
of the conduit 32.
Whenever it is found that the conveyor screws
45 and 48 must be disconnected for any reason,
20 the mechanic removes the bolts 63 which secure
the clamp 36 to the delivery conduit 35 and raises
the clamp through the opening 64 in the cab deck
I5. The upper _forward section 56 may then be
swung rearwardly to a position as shown by the
25 dot and dash lines in Fig. 4 whereby the pins 49
and the block 50 may be removed and replaced
tender are rounding curves or passing over
switches, frogs and turntables.
The particular mounting for the conveyor 25,
and the relation of this conveyor With the tender 15
and locomotive can be used advantageously in
many smaller locomotives and tenders of the
type usually placed in shunting or light passenger
service. Since locomotives of this type usually
are provided with a short rigid wheelbase Where 20
by relatively sharp curves may be negotiated,
those familiar with the art will readily appre
ciate that the mounting of the conveyor 25 as
herein set forth will provide ample -flexibility in
the Stoker mechanism without extensive altera 25
tions in the existing structures of the locomotive
or tender.
if found to be worn.
Rearward of discharge mouth 54 is mounted the
distributor member 55 which includes a chambered
30 member 61 receiving pressure fluid from the sup
ply line 68 and arranged to issue blasts of pres
sure fluid toward the ñrebox through the orifices
69. A casing 1I, formed with the conduit 35
extends above the mouth 54 and is provided with
35 inspection openings 12 above the distributor mem
ber 55.
Above the casing 1I there is shown a portion
of a conventional firedoor 15 which closes the
upper portion of the elongated firing opening I8
40 against outside exposure. The openings at each
side of the delivery conduit 35 in the lower por
tion of this firing opening are closed against rear
ward exposure by a pair of flanges 16, one extend
ing laterally from each side of the conduit, form
45 ing also a means for securing the conduit 35 to
the backhead I3 by bolts 11.
A further support
for the conduit 35 is afforded by providing it with
foot pads 18 which are secured by bolts to a
bracket 19 carried by the flrebox backhead I3
and mud ring I9.
Fuel emerging from the upwardly opening
mouth 54 is swept forwardly across a table 80 by
the jets of pressure fluid issuing from the distribu
tor member 55. The table 80 is supported by the
conduit 35 and extends forwardly therefrom.
The table 80 and the forward portion of the con
duit 35 are protected from the intense heat within
the firebox by the vertical grate 83.
At the rear of the trough 21 and rigid therewith
60 is a gear casing 38 which houses and maintains in
an operative relation suitable gearing (not shown)
for driving the stoker conveyors. Power is trans
mitted to such gearing from the motor 39 by
flexible shafting 39a.
ent that the necessary flexibility has been provided 10
for the stoker conduits when the locomotive and
Depending from the under
side of the gear casing 38 is a spherical member 40
which rests in a complementary seat 4I of the
supporting bracket 42. By this arrangement, the
conveyor 25, at the rearward end thereof, is
mounted to pivot about a vertical axis and also
about a transverse horizontal axis, It will also
be observed that the rearward end of the conveyor
25 is restrained against relative fore and aft move
ment with reference to the tender 20 by reason
of the engagement of the spherical member 40 in
the seat 4I. Movement of the conveyor 25 about
This application is a division of my co-pending
application for patent Serial No. 3,658, ñled Jan
uary 23, i935, for improvements in Stoker, now
Patent No. 2,072,821.
î claim:
l. In combination with a locomotive having a
firebox and a tender provided with an apertured
floor with a fuel bunker thereabove, a conveying
system for transferring fuel from the bunker to
said ñrebox comprising a conduit rigidly mount
ed on the locomotive, a conduit leading forwardly
from the tender and at its forward end being
universally connected to the rearward end of the 40
ñrst named conduit, said second named conduit
including an open mouth trough disposed on the
tender beneath the apertured floor to receive fuel
directly from said bunker, said second named
conduit at the under side of its rearward end
being provided with a member having a spherical
surface, means carried by said tender having a
complementary spherical surface which is ar
ranged with the spherical surface of said mem
ber to form a support for the second named con
duit whereby the latter is mounted to pivot about
a vertical axis and also about a transversely ex
tending horizontal axis, the depth of engagement
of said complementary spherical surfaces being
no greater than the radius of curvature of said
spherical surfaces, such mounting of the conduit
restraining fore and aft longitudinal movement
thereof and also movement about a longitudinally
extending horizontal axis.
2. In combination with a locomotive having a
ñrebox and a tender provided with an apertured
iicor with a fuel bunker thereabove, a conveying
system for transferring fuel from the bunker to
said ñrebox comprising a conduit rigidly mounted
on the locomotive, a conduit leading forwardly
from the tender and at its forward end being
universally connected to the rearward end of the
first named conduit, said second named conduit
including an open mouth trough disposed on the
tender beneath the apertured floor to receive fuel
directly from said bunker, said second named
conduit at the under side of its rearward end
being provided with a member having a spherical
surface, means carried by said tender having a
complementary spherical surface which is ar
ranged with the spherical surface of said member
2,127,338
to form a support for the second named conduit
whereby the latter is mounted to pivot about
a vertical axis and also about a transversely ex
tending horizontal axis, the depth of engagement
of said complementary spherical surfaces being
no greater than the radius of curvature of said
spherical surfaces, such mounting of the con
duit restraining fore and aft longitudinal move
3
first named conduit, said second named conduit
including an open mouth trough disposed on the
tender beneath the apertured floor to receive fuel
directly from said bunker, said second named
conduit at the under side of its rearward end 5
being provided with a member having a convexly
curved spherical surface, means carried by said
tender having a concave spherical surface form«
ment thereof and also movement about a longi
10 tudinally extending horizontal axis, said second
ing a seat in ywhich is received the convexly
named conduit being extensible and contractible
intermediate the ends thereof.
said conduit is mounted to pivot about a vertical
axis and also about a transversely extending
3. In combination with a locomotive having a
l'irebox and a tender provided with an apertured
floor with a fuel bunker thereabove, a conveying
system for transferring fuel from the bunker to
said ñrebox comprising a conduit rigidly mount
ed on the locomotive, a conduit leading for
wardly from the tender and at its forward end
being universally connected to the rearward end
of the first named conduit, said second named
conduit including an open mouth trough dis
posed on the tender beneath the apertured floor
to receive fuel directly from said bunker, said
second named conduit at the under side of its
rearward end being provided with a member hav
ing a spherical surface, means carried by said
tender having a complementary spherical sur
face which is arranged with the spherical surface
of said member to form a support for the second
named conduit whereby the latter is mounted to
pivot about a vertical aids and also about a trans
versely extending horizontal axis, the depth of
engagement of said complementary spherical sur
faces being no greater than the radius of cur
vature of said spherical surfaces, such mounting
of the conduit restraining fore and aft longi
tudinal movement thereof and also movement
about a longitudinally extending horizontal axis,
said second named conduit being extensible and
contractible adjacent the forward end thereof.
4. In combination with a locomotive having a
ñrebox and a tender provided with an apertured
floor with a fuel bunker thereabove, a conveying
system for transferring fuel from the bunker to
said firebox comprising a conduit rigidly mounted
on the locomotive, a conduit leading forwardly
from the tender and at its forward end being
universally connected to the rearward end of the
curved spherical surface of said member whereby
horizontal axis, the depth of engagement of said
complementary spherical surfaces being no
greater than the radius of curvature of said 15
spherical surfaces, such mounting of the conduit
restraining fore and aft longitudinal movement
thereof and also movement about a longitudinally
extending horizontal axis.
5. In combination with a locomotive having a 20
iirebox and a tender provided with an apertured
fioor with a fuel bunker thereabove, a conveying
system for transferring fuel from the bunker to
said firebox comprising a conduit rigidly mount
ed on the locomotive, a conduit leading forwardly 25
from the tender and at its forward end being
universally connected to the rearward end of the
ñrst named conduit, said second named conduit
including an open mouth trough disposed on the
tender beneath the apertured floor to receive fuel 30
directly from said bunker, said second named
conduit at the under side of its rearward end
being provided with a member having a con
vexly curved spherical surface, means carried by
said tender having a concave spherical surface
35
forming a seat in which is received the convexly
curved spherical surface of said member whereby
said conduit is mounted to pivot about a vertical
axis and also about a transversely extending
horizontal axis, the depth of engagement of said
complementary spherical surfaces being no 40
greater than the radius of curvature of said
spherical surfaces, such mounting of the con
duit restraining fore and aft longitudinal move
ment thereof and also movement about a longi
tudinally extending horizontal axis, said second
named conduit being extensible and contractible
intermediate the ends thereof.
JOSEPH B. MACKENZIE.
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