US2081113A - Stoker - Google Patents

Description

May 18, 1937. H. P. ANDERSON STOKER Filed March 28, 1953 2 Sheets-Sheet l @INVENTOR, flan/are ATTORNEY.

May 18, 1937. H. P.- ANDERSON 2,081,113

sTbKER Filed March 28, 1953 2 Sheets-Sheet 2 1 llII/III/IIIIIAVIIIII/AW' INVENTOR.

ATTORNEY.

Patented May 18, 1937 UNITED STATES STOKER Howard P. Anderson, Erie, Pa., assignor, by mesne assignments, to The Standard Stoker Company, Inc., a corporation of Delaware Application March 28, 1933, Serial- No. 663,131

2 Claims.

This invention relates generally to stokers and more particularly to stokers arranged to deliver fuel through the firing opening of a locomotive.

One object of the invention resides in the provision of a novel form. of combined fuel feeding and firedoor apparatus which is conveniently and advantageously assembled as a unit for installation to a locomotive firebox.

Another object of the invention contemplates the provision of a compact, simple. and efiicient novel locomotive unit of a stoker comprising a fuel feed casing having a discharge opening in substantial register with the. firing opening, a frame embracing the firing opening formed with the fuel casing and a door mounted from the frame to swing vertically on a transverse axis and arranged to form a closure for a hand firing opening in the stoker casing.

It is another object of the invention to provide in combination with a stoker of the type described, mechanism for operating the door, which mechanism is particularly adapted to and arranged in novel relation with the specific stoker construction.

Other objects of the invention residing in the construction of the individual elements and their relation one with another will be apparent from the following description when read in connection with the accompanying drawings, wherein Figure 1 is a view in vertical longitudinal section v of a portion of a locomotive with the stoker shown in operative position, parts of the stoker being in elevation and parts broken away;

Figure 2 is a view taken on the line 2-2 of Figure 1;

Figure 3 is a view taken on the line 3-3 of Figure 1;

Figure 4 is a view taken on the line 4-4 of Figure 5 with a portion broken away and a portion shown in section;

Figure 5 is a sectional view taken on the line 5-5 of Figure 2;

Figure 6 is a sectional view taken on the line E--5 of Figure 5;

Figure '7 is a sectional view taken on the line '|1 of Figure 5.

In the drawings, the locomotive is indicated generally by the numeral 10 and includes the main frame II, the cab 12 and cab deck l3. At l4, there is shown the backhead of the firebox l5 constituting a rear water leg of the locomotive boiler. A portion of the firebox grate is shown at IS. The backhead 14 has an opening 11 therethrough arranged to form both a hand firing opening and a stoker firing opening.

A stoker for transferring; fuel from a tender, a portion of which is shown at" l8, to the firing opening I! is indicated as a whole by the numeral 19.. The stoker 19 includes a riser or fuel feed casing 20 mounted within the cab 1-2 on the backhead [4 of the firebox I5 in a manner. to surround the conventional firing opening I1. The casing 20 may be supported from the backhead [4, at its lower end by the bracket 21 and at its upper end or mouth portion 22 by the bolts,

23 passing through the slots 2-4 in the lateral flange 25. The flange or frame 25 defines the discharge opening of the casing 20' and embraces the firing opening I].

From the firing opening 11, the riser casing 20 slopes rearwardly and downwardly to a point below the cab deck l3. There its lower open end receives and is flexibly connected with the front end of a conduit section 26- leading from a source of fuel supply on the tender i8l. A screw conveyor- 21, terminating at its forward end adjacent the lower end of the casing 20 conveys fuel forwardly from the tender l8 and forces .it through the casing 20 to the firing opening.

The screw conveyor 21 may be driven'from its rearward end or intermediate its ends in any manner well known in the art. For purpose of illustration a driving engine 28 is shown mounted on the locomotive frame II and a drive shaft 29 extends rearwardly therefrom and is operatively connected with the screw conveyor through suitable gearing (not shown).

A fuel distributor plate 30 is secured to the flange 25 adjacent the lower end of the mouth portion 22 of the casing 20 in any desired manner that will permit of its ready removal. The plate 30 extends forwardly through the firing opening I'l into the firebox I5. Fuel is projected across the plate 30 by pressure fluid issuing from a distributor head 31 located at the rear of the plate. A plurality of ribs 32 are provided on the upper surface of the plate 30 and are arranged spective flanges 35- and 36 by suitable means, as

by bolts 31. The wings 33 and 34 in effect form continuations of the walls of the mouth portion 22 of the casing 20 and extend into the. firing opening thereby preventing coal from spilling overthe sides of the rearward portion of the distributor plate.

The casing 20 is provided in its top, immediately rearward of the flange 25, with an opening 38 of sufficient size to permit entrance to be gained to the firebox for the purpose of inspecting the grates, and other parts of the firebox and for effecting necessary repairs. The opening 38 also forms a hand firing opening and permits insertion of a hook or rake for raking or cleaning the fire. A dome shaped door 39 forms a continuation of the rear and side walls of the casing and a closure for the opening 38 and is mounted on the flange 25 to swing vertically about a transverse axis, as for instance, on the rod 8 which is journalled in the bearings 9.

The mechanism for operating the door 39 comprises a hand lever 49 pivoted loosely on the pin 4| which projects laterally from a side of the casing 29 adjacent the flange 25 and in a plane below the axis about which the door 39 swings. A link 42 is pivoted loosely at one end on a pin 43 intermediate the pivoted end and the free end of the hand lever 49and pivoted loosely on a pin 44 in the lug 45 of the door 39. Thus by raising the hand lever 40, the door 39 is opened through the link 42.

In order to retain the door in any one of a number of positions, a quadrant shaped rack 46 is formed with the casing 20 and is provided with a plurality of notches 41. A rod 48 is movably mounted with the hand lever 40 and its one end is pressed against the curved surface of the rack 46 by the spring 49 and as the hand lever 4|] is raised, the rod 48 will engage one of the notches 4'! thereby retaining the hand lever 40 and door 39 in position. To release the door 39, the rod 48 is removed from engagement with the notch 41 by pressure of the hand on the extension 59 of the rod 48.

The distributor head 3| is arranged to be inserted into position in the mouth portion of the casing 29 through an opening 5| in the casing sidewall adjacent its discharge end. Extending transversely across the bottom wall of the mouth portion of the casing 20 is an arcuate shaped depression 52 arranged to form a seat for the distributor head 3| which is provided with a complementary arcuate shaped surface 53. The

distributor head is held in position at one end by the wall of the casing 20 bordering the opening 5| and at its other end by the lug 54 which is received in the opening 55 in the thickened wall portion 56 of the casing 20. The distributor head 3| is adjustable about its transverse axis and may be secured in any one of a number of positions by the bolt 51 which passes through the arcuate slot 58 in the flange 59 of the distributor head and into the lug 60 on the casing 20. The lug 60 shown in section in Fig. 6 corresponds in shape to the flange 59 which appears in Fig. 1.

The distributor head 3| is provided with a concave rear wall 6| conforming to the shape of the wall of the casing 29 and. a concavetop wall 62 conforming with the shape of the wall of the mouth portion of the casing 29. The distributor head 3| is divided internally into chambers 63,

64 and 65 and openings 56, 61 and 68 in the end wall of the head communicate respectively with the chambers 63, 64 and 65 for the introduction of pressure fluid. That portion of the arcuate shaped wall 53 of the distributor head that faces the firebo-xis provided with a plurality of jet openings 69 communicating with the chambers 63, 64 and 65. A plurality of supply lines 19 conduct pressure fluid to the chambers 63, 64 and 65 and may be provided with valves (not shown) for regulatirg the supply of pressure fluid to the chambers.

From the foregoing it will be realized that a novel stoker for feeding fuel through the firing opening has been constructed which is of a simple and durable nature and in which the parts are so organized that access to the firebox may be made conveniently.

This application has been divided and applications Serial Nos. 137,470 and 137,471 were filed April 17 1937 to cover the divisional subject matter.

The appended claims define the scope of the present invention.

I claim:

1. In a stoker provided with a riser casing having an opening in its top portion and a movable door on said casing forming a closure for said opening, mechanism for actuating said door, said door being hinged at one end to swing vertically on an axis transverse to the riser casing, said mechanism comprising a handle pivotally mounted at one side of said riser casing on an axis transverse to the casing and in a horizontal plane below the horizontal plane of the axis of the hinge for said door, and a link at one end connected to said door between the axis of its hinge and the opposite end thereof and said link at its other end being connected to said handle between the free end of the handle and the pivotally mounted end thereof whereby upward movement of said handle is transmitted to said door for uncovering the opening in said riser casing.

2. In a stoker provided with a riser casing having an opening in its top portion and a movable door on said casing forming a closure for said opening, mechanism for actuating said door, said door being hinged at one end to swing vertically on an axis transverse to the riser casing, said mechanism comprising a handle pivotally mounted at one side of said riser casing on an axis transverse to the casing and in a horizontal plane below the horizontal plane of the axis of the hinge for said door, and alink at one end connected to said door between the axis of its hinge and the opposite end thereof and said link at its other end being connected to said handle between the free end of the handle and the pivotally mounted end thereof whereby upward movement of said handle is transmitted to said door for uncovering the opening in said riser casing, the connection between the link and the door being disposed at one side of a plane passing between the hinge of said door and the connection between the link and the handle, and the axis of the pivoted end of saidhandle being dis- HOWARD P. ANDERSON.

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