US1920334A - Locomotive stoking mechanism - Google Patents

Description

Aug. 1, D w Ms LOCOMOTIVE STOKING MECHANISM Filed Sept. 21, 1927 3 Sheets-Sheet l I A TTORNEY Aug. 1, 1933.

D. T. WILLIAMS LOCOMOTIVE] STOKING MECHANISM Filed Sept. 21, 1927 3 Sheets-Sheet 2 Y hams,

ATTORNEY 1, 1933- D. T. WILLIAMS 1,920,334

LOCOMOTIVE STOKING MECHANISM Filed Sept. 21, 1927 3 Sheets-Sheet 3 nvmvroa, DcAYKBLTWi i onus,

' ATTORNEY.

Patented Aug. 1, 1933 "STATES A ENT OFFICE? Application September, 21, 1927 ,Serial- No.'220,9641 V 9 Claims. (Cl. 11105 101.)-

Th'e object of this invention, which relates to automatic stokers, particularly for locomotives, is-to improve-the means .forldelivering the. fuel "to and distributing it over.v the fuel-bed so that -i the placement of the fuel at any or all points on the fuel bed may be readily accomplished under the control or the fireman; that the mechanism "may beapplied to any'existing locomotive with the least possible-interference with existing structure and so-asnot to encumber otherwise useful "space; thatit-may be adapted; whenever automaticfeeding-forward of thefuel from the bunker to the-point for delivery into the fire-box fails 'forany'reason; to lend itself to hand-firing sub- ""ject-to the above-indicated selective placement of the" fuelon the fuel-bed under the control of the firemanand'alsoadapted to be quickly and easily removed as an entirety if for any reason such becomes necessary ordesiredpand that it maybe-further adapted when the firing isbeing ."doneimanually-for operation in part by man-controlled mechanically operated means, asthat now commonly used for moving the closure for the ring opening of the furnace.

Fig. Ishows theimprovedmechanism"in side "elevation in positionona locomotive of which lthe rearportion: appears in vertical section; 7

Fig.2 is arear'elevation of what; appears in Fig". 1,v but partly .in section;

' Fig.8 is a horizontal section online 3 3, Fig; 1, in which a certain box partly appears. in such section and the top of the conduit terminal and conduit rotated from a steam-engine, 4, thefuel (coal) is forced forward fromthe bunker of the 1 tendeiaand .tow the top for such elbow. The elbow -Qin v,the present example Sprotrudes somewhat above the floor 5 of the locomotive cab,- back of 45.. the rear wall ofthe fire-box of the furnacawhose firingi opening... is .shown at and its .grate-level at w it being understood that the level of the I fuel on the gratedoes not exceed approximately thelevel .of. the bottom of the opening 6. Itis 50-.now conunon practice to provide the firing open- .ingLwith 'clo'suremeans which is normally-closed land..fiuid-operatedpforopening subject .to the control of the fireman, as by pressure ona pedal,

. so .that cold air is. excluded from the firebox ,ex-

cept whenheis actually entering eachshovelful of coaluand he is relieved fromhand-manipula- --tion of the closure means. Such a mechanism-is generally shown in the drawings as comprising guides- '7 at-both sides of the openingG; closure -means therein, usually consisting of a pairof doors'iwh'ich slide to. and from each other in the guides but here-is shown as comprising a single door-B normally held closed; fluid-actuated means 9 for eifecting the opening of such 'idoor-havingalever QafuIcrumed at 9?) connected on the-one hand with astud 9c of the piston of such means and onthe other with a stud 9d on the door 8; and a pedal 10 for operating the valve: controlling the fluid" for actuating the 'means 9; as this mechanism forms ;no part of cmy invention a more particular description-thereof is unnecessary.. I Y

Y, The elbow 1 projectsup back of the firing openving 6 and has a'frontaldischarge opening thereto =3 buti'islotherwise closed at the'top (normally) and :at all-sides; To this: end the-terminal 1a of the elbow 1'- is" preferably surmounted by the following; structure: 11' 11 are two side walls .and 12 a rear wall bolted together in rectangular arrange- 0 efiring opening 6, the'wholethus forming a hous- .ringor boxiopento receive the fuel elevated therexlintot from the terminaland also at the front, wherethe mentioned discharge opening, desig-' nated 1b, exists, and closed at the back and two ides'and also (normally) at the top. It is removablyfattached to the terminal by bolts 15 pivoted to the sides of the latter and received by notches- 11a" in theba'salflanges 11b of the side wallsll and'havin'g clamping nuts 15a to bear on such flanges.

The back wall 12 forms a fluid manifold, having 'a'main chamber 16 extending its full length and forward thereof a line of distributing chambers 17 each of which is provided with a horizontal line of jet-outletsl'la open toward discharge "opening 11) and has a valve-seat l'lbaffording communication with the main chamber'through the partition 12a separating the latterfrom the distributing ch ambers.- Screw-valves 18 arranged to seat on the valve-seats 1727 with their handles 18a projecting rearwardly are mounted in the manifold, so that the supply of fluid from the main to any distributing chamber can be cut off or varied. The supply to the. main chamber is afforded by a pipe 19, which may take fluid from any fluid source, as the locomotive boiler. The manifoldaf fords means whereby, as fast as the fuel mass is elevated in the terminal, it may be projected through discharge opening 1b and hence through the firing opening 6 into the firebox: since the jets are alined the blast possible ,tobe attained will exist substantially as a sheet.

Distribution of the fuel to any part or all parts of the fuel-bedis accomplished as follows: On a horizontal axis extending across the firing opening 6 and arranged in the front upper part of the terminal is are pivoted to move up and down a set of, here, four individually movable arms 20 and 21. The two arms 20 are fixed, by set-screws 20a, on individual tubular rock-shafts 22, and the other or intermediate arms 21 are fixed, by setscrews 21a, on individual rock-shafts 23 journaled in the rock-shafts 22, each rock- shaft 22 and 23 protruding laterally from the terminal and having on its protruding end a handle 24; for holding each arm 20 and 21 at an elevation to which it is all the arms. I

on the door and a link 29 for separably connecting them, the purpose of which will hereinafter There is an eye 27 on the cover 13, a hook 28 appear.

Bythe described mechanism the fireman can obtain and maintainproper distribution of fuel 'over the entire fuel-bed, including from back to front at each side, by opening some or all of the valves 18'more or less to bring into action and vary the. force of the components of the entire blast possible and raising into the path of the. resulting fuel stream such of the deflectors as his judgment dictates. In short, generally distributed and selective placementof the fuel on the fuelbed is possible.

In the event that the fuel-forwarding part of the stoker becomes jammed or otherwisedisabled the fireman can feed the mechanism by hand, to wit, by applying his foot to the pedal 10*which, with the opening of the door 8 by the means 9, will cause through link 29 the opening of the. cover 13 (dotted position, Fig. 1) enabling him to shovel the coal into the thus-opened upper end of the terminal, which then becomes a receptacle or hopper having a forward outlet to the fuel-bed andmeans to discharge through such 7 outlet the thusdelivered,fuel.

If it is necessary for repairs or-other purpose to clear the mentioned box surmounting terminal 1a from the firing opening such may be'done byreleasing-the bolts- 15 and swinging the box back on a pivoting bolt 29 or also by withdrawing such boltv and entirely removing the box, leaving the stoking to be done by. hand in the 'usual way, in which case the door 8 (whose closing movement is according to the illustrated con- 'ditions' limited to the position where it comes to rest on the box) would fall in closing to completely closing relation to the firing opening.

1. In combination, a furnace having a firing opening, mechanical means to feed fuel through said opening including a conduit partially closing the opening and having a discharge outlet thereto and also a fuel-receiving opening, a movable closure for the firing opening, a movable said housing.

closure for the fuel-receiving opening, means coupling said closures for simultaneous opening and closing, and mechanical means for elfecting movement of one such closure having man-controlled controlling means.

2. In combination, a furnace having a firing opening, mechanical means to fed fuel through said opening including a conduit partially closing the opening and having a discharge outlet thereto and also a fuel-receiving opening, a movable closure for the firing opening, a movable closure for the fuel-receiving opening, means disconnectively coupling said closures for simultaneous'opening and closing, and mechanical means foreffecting movement of one such closure having man-controlled controlling means.

. 3. Li combination, a furnace having a firing opening,a fuel supplying means partially closing said opening and having a discharge outlet thereto and also a fuel-receiving opening, a movable closure for the firing opening, a; movable closure for the fuel-receiving opening, ,means coupling said closures for simultaneous opening and closing, and mechanical means for effecting movement of one such closure having man-controlled controlling means. v

- 4. In combination, a furnace having a firing opening, a fuel supplying meanspartially clos ing said opening and, having a discharge outlet thereto and also a fuel-receiving opening, a movable closure for the firing opening, a movable closure for the fuel-receiving opening, means disconnectively coupling said closures for simultaneous opening and closing, and mechanical means for effecting movementof one such closure ,having man-controlled controlling means.

5. In combination, aiurnace having a firing opening, a fuel receptacle communicating with the firing opening, a pressure fluid supply including a manifold forming a detachable upper portion of the rear wall of said receptacle, said manifold having a main chamber, and a plurality. of

secondary chambers, independent passages in the manifold connecting said main chamber with said secondary chambers whereby'pressure fluid may be supplied to said secondary chambers, and, a valve'in each of said independent passages for independently regulating the supply of pressure fluid to a respective secondary chamber, said secondary chambers being provided with one or more jet outlets whereby pressure fluid is emitted in a sheet-like blast.

6. In combination, a furnace having a firing opening, a fuel receptacle provided with a removable housing portion having a discharge outlet to the lower portion of said opening and being mounted to swing away from the opening, and a mechanically operated firedoor normally closing the upper portion of said opening, the

door being of size sufficient to cover the entire opening, said door automatically forming a closure for both said upper and lower portions of the firing opening when said housing is swung away therefrom.

7. The combination with a furnace having a firing opening, of a fuel receptacle communiing at its upper end a removable housing hinged at its endremote from the furnace to swing away therefrom, a hinged cover for said housing mounted to swing toward the furnace, and a detachable manifold forming the rear wall of '8. The combination with a furnace having a firing opening, of a fuel receptacle having at its eating with said opening, said receptacle includupper end a housing portion communicating with said opening, said housing portion being hinged at its end remote from the furnace to swing away therefrom a removable top cover for saidhousing and a detachable manifold forming the rear wall thereof 9. In combination; a furnace having a firing opening, a conduit including a movable housing portion partially closing the opening and having a discharge outlet to the lower portion thereof, a closure for the upper portion of said opening,- said closure and said movable housing to-'

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