US991614A

US991614A - Mechanical stoker.

Info

Publication number: US991614A
Application number: US54894510A
Authority: US
Inventors: William T Hanna
Original assignee: CLYDE P JOHNSON; MARTHA A HANNA
Current assignee: CLYDE P JOHNSON; MARTHA A HANNA
Priority date: 1910-03-12
Filing date: 1910-03-12
Publication date: 1911-05-09
Anticipated expiration: 1928-05-09

Description

W. T. HANNA.

MECHANICAL STOKER.

APPLICATION IILBD MAR. 12, 1910.

Patented May 9, 1911.

2 SHEETS-BHEBT 1.

.W. T. HANNA.

MEGHANIGAL s'roxan.

APPLIQATIOB FILED KABJZ, 1910v 2 BHEBTS-BHEBT 2.

Patented May 9, 1911.

Wngsaea /a b/wm w v UNITED STATES PATENT OFFICE.

WILLIAM T. HANNA. OF CINCINNATI, OHIO, ASSIGNOR OF TWO'THIRDS TO MARTHA A.

HANNA AND ONE-THIRD T0 CLYDE P. JOHNSON. OF CINGanNATI, OHIO.

MECHANICAL STOKEE.

Specification of Letters B atant.

Patented May 0, 1911.

Application filed March 12, 1910. 'Serial No. 548,945.

To all whom it may concern:

Be it known that l. \\'u. .i.\n 'l. llxxxl, a citizen of the l nited. States. residing at Cincinnati. in the county of Hamilton and 'State of Ohio, have invented certain new and useful Improvements in ,Merhanicul tokers, of which the following is a specification.

My invention relates to that class of stoke-rs in .which a feed plate, with guide wings adapted to oscillate thereon. is cmploycd for mechanically directing the flow of the fuel as it enters the furnace from the fuel conduit, and the object of the invention is to provide improved means for actuating the aide wings.

llv invention consists in the parts and comhination and arrangement of parts hereinafter describe and claimed.

I have illustrated my invention as applied to a blast-feed locomotive stoker. but showing onl; so much of the stoker construction as will sutlice to show the connection of the invention therewith. v

In the drawings, Fi ure 1 is a front elevation oft a portion 0? the fire front of a locomotive furnace equipped with aw invention'; :Fig. 2 a rear elevation of the same} Fig. 3 a side elevation of the guidewing actuating mechanism; Fi 4 an enlarged plan view of a portion 0 the same;

Fig. 5 a section on the line 5-5 of Fig. 1; Fig. 6 a lan view including the tire, door frame; FIg. T a skeleton perspective view showing the relationship of certain of the operating parts; and Fig. 8 an enlarged letail of a ratchet. wheel and the connecting parts. A designates the furnace front, the. tire door frame the usual fuel opening hezug indicated in dotted lines. B the. fire door, a hinge knuckles on the door frame. hinge knuckles on the door. C the. hinge pintle. l a plate secured to the fire door to which the fuel conduit may be attached and provided with an opening I] throu 'h which uel may pass from the fuel conduit to the interior of the furnace. and E a feed plate pro ecting within the door opening. 'lhc Feed plate i-z preferably angula r in cross section with its upper faces forming 1| rulg: like that of a pitch roof, aiuLJhe plate preferably v-lulws dtm'mvardly from the feed to the dlsrhargc enrl.

l F, are guide wings; preferably in the form of rectangular plates. mounted at their rear ends upon pivot shafts G, G, in such manner that. by rocking the pivot shafts,

downwardly upon the u r feed plate.

H. H. are rock shafts mounted in brackets n projecting: from the door frame, and having a jointed connection with the guide wing pivot shafts and provided with crank arms I! and Ir whereby thev may be rocked.

Feed plates and guide wings of the ame general type are disclosed in my pending; applications, Serial Numbers 282.142. filed October 10, 1905, and 373,908, filed May in, 1907. and the parts thus far described,except as elements in newgcombinations, constitute no part. of the present invention. v

The reference numeral l'desi nates a bracket extending from the door rame, 3 a ratchet wheel loosely mounted upon a iivot shaft 3 mounted in bracket 1, 4 a bar at apted to be reciprocatecl by any suitable connection with the stoker engine (not shown), 5 a lever pivotally connected with bar 4, fulcrumed on pivot shaft 3 and carryin a pal let. 6 adapted to engage with the. tcct 1 of the ratchet wheel andto actuate the wheel, 7 a weighted pawl adapted to prevent reverse movement of the ratchet wheel and to retard its direct action; and 8 and 8' arms eccentrically connected with the ratchet wheel. I prefer to mount one of the eccentric arms in such manner that its hearing may be readily shifted relatively to the axis of the ratchet wheel. In the form shown 9 is a plate fixed to the ratchet wheel and provided with a slot 10 extending across the axis thereof and with a recess 11 to receive the head of a bolt 12', carnving a disk 13 upon which the eccentric arm 8 is loosely mounted. The bolt may be secured in either end of the slot hy screwing up the nut which also clamps the disk in a fixed position. The other arm 8 is mounted upon a cam 1 4. By changing the position of the hull, which serves as the eccentric shaft. of arm 8. from one end of slot. 10 to the other end. the direction of motion of arm 8 relatively to that of arm 8' may be reversed. lit llllll' free ends, the eccentric arms are pwotnlly connected with ernnk's, lfi'uml l5" P to actuate rock shafts l6 and ill mounted aces of the in bracket 1. ,To the other n of the k the guide wings may be swung u )wardlvand E shafts are fixed cranks, I7 and 17', carrying 1 upon their wrist pins rollers, 18, adapted to 1 travel in grom'es 19 in levers 20 and 20' l These lovers are fulcrumed at one end upon 5 pivot bolts 21, and are ivotnlly connected at their other ends to 10( 5 22 and 22 which are connccted by universal joints 23 with the cranks h and h which actuate the guide E wing rock shaft. The )ivot bolts .21 are i carried by cranks L t fixe to pivot shafts .25 mounted in the bracket and adapted to he actuated by

hand bars

26 and 26. The hand bars; carry at their free ends, knobs 27 having 5 ring pins 28 adapted to take into selected oles in series of holes 29 arranged in the arc of a circle in segmental plates 30 and. 30.

It should be noted that the arcs of travel of the rollers 18 are fixed, that the cranl s 17 and 17 carryin the rollers are osltlvely driven and are a opted to actuate t e levers, and that the positions of the pivot bolts 21, which serve as fulcrums for the levers, may be changed, relatively to the arcs of travel I of the rollers, by means of the hand bars acting through pivotshafts 25 and cranks The action of the levers upon the "dewin actuating rods is therefore large y depen out upon the position of the lever fulcrums relatively to the arc of travel of the rollers. I have illustrated hand bar 26 as axten'ding horizontally and secured midway of the segmental plate. This positions the fulcrum of lever 20 in the same vertical plane with roller 18 when the latter is in the center of its arc of travel and the lever will be actuated-through its entire ossible sweep i and thereby cause guide wing l to be oscillated throiwh its entire sweep. I have illustrated hand bar 26' as extending vertically with its knob and upward. This positions the fulcrum of lever 20' in substantially the same horizontal plane with roller 18 and the roller will ride in the groove without imparting any substantial movement to the lever. lVith the lever in this position guide wing F 111 be stationary at the bottom of its sweep. Reversing the position of the hand bar would reverse the position of lever 20 and the guide wing would he stationary at the top of its sweep. By positioning the hand bar at any angle between the vertical and the horizontal upon the upper half of the segmental plate the guide wing may be caused to oscillate to and fro from its low position through any desired partof its possible swee By positioning the hand bar at any ang e between the vertical and the horizontal upon the lower half of the se mental plate the guide wing may be caused to oscillate to and fro from its high position through an v desired part: of its ossible sweep. With both guide wings osci lating throu h their entire sweep, the

fuel is discharge with practical uniformity 1 from the entire width of the feed plate. ll 1th hotlrguirlo wings stationar at the bottom of their sweep the fuel is do ivered from the outer edge of the plate 6n both sides.

other oscillating through its entire sweep the feed is distributed with practical uniformity from o ne side to the center line of the late.

T e operation is as follows: Bar 4 is recip rocated and imparts movement to lever 5 which, through pallet 6, actuates the ratchet wheel 2. Movement of the ratchet wheel imparts movement to tie eccentric-anus, 8 and 8, wh1eh,through cranks,'15 and 15,

rock shafts

16 and 16 and the roller carrying cranks, 17 and 17 cause the

rollers

18 and 18 to travel in the ooves 19 and 19 in

levers

20 and 20. T to pivot

bolts

21 and 21 being positioned as shown in the drawings, roller 18 will rock lever 20 to and fro and movement of the lever will reciprocate rod 22 which, acting through crank h, rock shaft H and pivot shaft G, will cause guide wing F to be oscillated through its entire sweep. Roller 18 will impart no effective movementto lever 20 and.guide ,wing F will be practically stationary at the bottom of its sweep. By positioning hand bar 26 so that its osltion will correspond with that of hen bar 26, both levers will he actuated to their full extent and both guide wings will he actuated through their full sweep. By positioning the hand bars at other angles the Euide wings may be actuated from top orottom through any desired portions'of their full sweep and either may be actuated through one portion of its sweep whilethe other is actuated through a difi'erent portion. By changing the position of bolt. 12 from the position shown to the other of slot 10 in plate 9 the eccentric arm 8 may be caused to move upward while arm 8 moves downward and travel of the feed plates will then be in reverse direction.

While I have illustrated the feed plate as angular in cross ection, any desired form may be used without departing from the spiritof my invention.

1 claim as my invention:

1. The combination with a furnace door casing .of a bracket; a feed plate; guide wings adapted to oscillate thereon; rods intenmediatcly connected with and adapted to actuate the guide wings; a ratchet wheel pivotally mounted on the bracket; means for actuating the ratchet. wheel; arms eccentrically connected with the ratchet wheel; and connections between the eccentric arms and the guide-wing actuating rods whereby the latter may be actuated.

2. The combination with a furnace door actuate the guide wings; a ratchet wheel pivotally mounted on the bracket; means for actuating the ratchet wheel; arms eceeutricaily connected with the ratchet wheel; crank connections between the eccentric arms and the guide-wing actuatin rods whereby the latter may he actuate and means for adjusting the throw of the cranks.

3. The combinatlon with a furnace door casing of a bracket; a feed plate; uide wings ada ted to oscillate thereon; 1'0( 5 intermediate v connected with and adapted to actuate the guide wings; a ratchet wheel pivotaily mounted on the bracket; -ineans for. actuating the ratchet wheel: arms cecentrically connected with the ratchet wheel;

crank connections between the eccentric arms and the gnidewing actuating rods whereby the latter may be actuated; and means for adjusting the throw 'of the cranks independently of each other.

4. The combination with a furnace door casing of a bracket; a feed plate; guide wings adapted to oscillate on the feed plate; pivot; shafts adapted to actuate the feed plates; rock shafts adapted to actuate the pivot shafts; rods adapted to actuate the rock shafts; a ratchet wheel pivotally mounted upon the bracket: a reciprocating arm; a lever arm pivotally connected therewith; a pallet carried by the lever arm adapted to actuate the ratchet wheel; arms eccentrically connected with the ratchet wheel; and connections between the eccentric arms and the rods which actuate the guide-wing rock shafts whereh the latter may be actuated.

Thecombination with a furnace door casing of a bracket: a feed plate; guidewings adapted to oscillate on the feed plate: pivot shafts adapted to actuate the feed plates; ock shafts adapted to actuate the pivot shafts; rods adapted to actuate the rock shafts; a ratchet wheel pivotally mounted upon the bracket; a reciprocating arm; a lever arm pivotally connected therewith; a pallet carried by the lever arm adapted to actuate the ratchet wheel; arms ecccntrically connected with the ratchet wheel: crank connections between the eccenarm; a lever arm pivotally connected thcrt: with; a pallet carried by the lever arm adapted to actuate the ratchet wheel; arms eccentrically connected with the ratchet wheel; crank comm-lions between the t'vt't'llv tric arms and the rods which actuate the guide-wing rock shafts whereby the latter may be actuated: and means for adjnuing the throw of the cranks imlcpctulcrtly of each other.

. The combination with a furnace door casing of a bracket; a feed plate; guide wings adapted to oscillate thereon; rods in termediately connected with and adapted to actuate the guide win a ratchet wheel pivotally mounted on th: bracket: llltillts' for actuating the ratchet wheel: arms eccentrically connected with the ratchet wheels; cranks pivotally connected with the eccentric arms; rock shafts adapted to be actuated by the cranks; cranks fixed to the driving ends of the rock shafts; rollers carriedhy the wrist pins of the cranks; and levers hav ing rooves adapted to receive the rollers, the evers being fulcrumed at one end and pivotaltv connected at the other end with the gnir e-win actuating arms.

8. The combination with a furnace door easing of a bracket: a feed plate; "uidc wings ada ted to oscillate thereon; rods intermediate v connected with and adapted to actuate the guidewings; a ratchet wheel pivotallj' mounted on the bracket; means for actuating the ratchet wheel; arms eccentrically connected with the ratchet wheel: cranks pirotali connected with the eccentric arms; rock shafts adapted to be actuated by the cranks: cranks fixed to the driving ends of the rock shafts; rollers carried by the wrist pins of the cranks; levers having grooves adapted to receive the rollers. the levers being fulcrnmed' at one end and pivotaily connected at the other end with the guide-wing actuating rods; and

means for changing the position of the fill cram of the levers rclatively to the arcs 01 travel of the rollens.

9. The combination with a furnace (loo! easing of a bracket: a feed plate: guidi wings adapted to osciilate thereon; rods in termedintelv connected with and adapter to actuate the guide wings: a ratchet whee pivotally mounted on the bracket: mean for actuating the ratchet wheel: arms eceeu trically connected with the ratchet \\'lNtl:- cranks pirotallv connected with the eeceutri arms: rk shafts adapted to be actuated b the cranks: cranks fixed to the driving end of the rock shafts: rollers carried h th wrist pins t the cranks: )lVOl shaft mounted in the bracket. hand are fixed t the pivots; cranks carried h the pin shafts; pivot bolts- (til'lictl h the crank: levers t'uleruunnl at one end on the pin bolts and pivotally connected at the otln end with the guide-win actuntiug rods and having grooves adapter to receive the rollers; and means for securing the hand bars in selected positions.

10. The combination witlra furnace door casing of a bracket; :1 feed plate; guide wings ado ted to oscillate thereon; arms intermediate y connected with and adapted to actuate the guide wings; a ratchet wheel pivotally mounted on the bracket; means for actuating the ratchet wheel; arms eccentrically connected with the ratchet. wheel; means for changing the :osition of the cc" centric axis of one of t e arms relatively to that of the other arm; and connections between the eccentric arms and the guidewing actuating rods whereby the latter may be actuated.

11. The combination with a furnace door ra sing of a bracket: a food plate; guide wings adapted to oscillate thereon; arms intermediately connected with and adapted to actuate the guide wings; a ratchet Wheel pu'otally mounted on the bracket; means for actuating the ratchet wheel; a plate cured to the ratchet wheel and havin a slot extending across the centerthcwo a halt adapted to be secured in either end oi the slot; a disk carried by the bolt; an arm loosely mounted thereon: another urin ccccutricnl 3' connected with the ratchet wheel; and connections between the arms and the oxide-wing uctnnting shaftsnvherchy the latter may he actuated.

'ILLIAM '1. HANNA.

Witnesses Auot'sr \V. Blown, llhWARl) Buocn.