US1636398A - Ash gate - Google Patents

Description

' July 19, 1927;

J. VAN BRUNT ASH am:

Filed Sept. 5. 1924 4 Sheets-Sheet 1 INVENTOR John 1/471 Era/11" ATTORNEY "July 19. .1927.

,1. VAN BRUNT ASH GATE Filed Sept. 5. 1924 4,5heets-Shaec 2 INVENTOR Jo/m ln 5mm?- I I I ATTORNE .7 July 19, 1927. J. VAN BRUNT I 153F398 ASH GATE Filed- Sept. 5. 1924 4 Shee ts-Sheet 3 BY '1 I I Y I ATTORNEY Patented July 19, 1927.

warren MES" 1,636,398? P TENT oerics;

was VANBRUNT. or Fwsmaa,asw oamjassmaoa To NTERnA'rio 'AL coat BUSTION ENGINEEBINGCORPORATION, OENEWYORK; N.'Y., A CORPORATION or DELAWARE.

ASH GATE-l Application filed'september 5, 1924. Serial No. 736,016.

My'invention relates to gates for the dis-, charge-opening 1n ash-pits of furnaces, and

has special reference to power operable gates for the ash-"pits of automatic stokers.

An object. of the invention is to provide a novel andimproved gate of this character.=

tions of partshereinafter described and.

claimed, the advantages of which will be obvious to those skilled in the. art.

Theseveral features of the invention will be clearly understood from the following description and 1 accompanying drawings, in which; 7

Figure l is alongitudinal sectional eleva tion of "an ash-gate embodying-the features of the invention in their preferredform, the

gate being shown associated with the discharge opening'in the lower end of an ashpit, and the section being taken on line'l1 of Fig. 2;

Fig. 2 is an end elevation of the construction illustrated in Fig. 1;

Fig. 3 is a longitudinal sectional view,

the line 33 of Fig. 2, partly opened position;

Fig. 4 is a detailed sect-ionalview taken on the line 4-4 of Fig. 3; and

F 5 is a view similar to Fig. 1 but of modified form, and showing the lower end of the ash-pit in elevation.

The gate illustrated in the drawings is shown associated with the lower end "of an ash-pit 2 having the usual discharge opening 4 therein. As shown, a rectangular frame 6 surrounds the lower end of the wall of the discharge opening in the ash-pit, and

is provided with upstanding flanges 8 en'1-" bracing the inner and outer sides of the wall, the frame being provided with a depending flange 10 that defines the discharge opening of the ash-pit. I

In the illustrated construction the gate comprises a casting-12 having an'outer up;

standing flange l4 and a central rib 15,th'espaces between theribs beingfi-lled with fire brick or: othersuitable heat insulating ma terial-l6. The gate is of suitable area sothat when it is in closed position as shown in Fig.

1, it will extend overand close the discharge I opening in the ash-pit, the flange 14 of the gate tightly engaging the lower end of the depending flange 10 ofthe frame6. The gate is mounted upona horizontally movable carrier" 16;,which is adapted to be moved 10a,

gitudinally to carrythegate into andout 50f position'beneath the discharge opening in the ash pit, and means is provided for raising thegate to closed posi-tionwhen it has been moved beneath the discharge opening, and" for loweringzthe gatewa distance below the discharge openingpreviously to the start of the retracting movement of the carrier.

The carrier lfi'comprises a pair of long'itudinally extending: oast-ingsor beams 18"" which aresecured together by suitably arranged channel irons 20. The ends of the beams are provided with transverse bearings 22, the bearings at the corresponding ends of thebeams being ini alin ement and receivingrock shafts 24. Each shaft 24'is further supported by bearings 26 formed on brackets 28'that are secured to theadjacent channel irons 20. The shaftsQ textendbeyondthe bearingsQQand have flanged wheels 30 journaled 011 their ends. The wheel'sl30 ride onthe lower flanges off'chan-nelirons or tracks- )artl in elevation taken substantiall on" showing-the gate 111"" 32by means. of a fluid operatedj'piston rod EEG-associated withthe rearendthereof. The

connection betw-eenthe carrier'and the pisv ton rod 36 comprisesa longitudinally ex; tending-bar38', which is arranged centrally: onthe under side of the carrier. This bar 38 5 is provided with a longitudinally extending and upwardly opening inverted T-sha'ped slot 40 which receives the lower portion "of a-horizontsil rail 1-2 having its endsbolted to the under sides of the channel irons- 20, I

saidlowerportion'of the rail 42 correspondingin shape'to theslot'40yand saidrbar be-; ing in slidingenga'geinent therewith. Each. end of the sliding bar '38 is bifurcated and receives the lower end of a} lever 44', each lever being provided with a transverse pin 46 which is received in vertical slots 48 in the bifurcated end. The upper ends of the arms 44 are centrally secured on the rockshafts 24 respectively. Two arms 50 are secured oneach shaft 24 adjacent the outer ends of the bearings 26 of the shaft. The upper ends of the arms 50 are provided with cam rolls 52 which are adapted to engage bearing surfaces 54 on the under side of the casting 12 of the gate, each bearing surface extending between depending flanges 56 for receiving the upper end of the arm 50 between them. Hangers 58 are bolted to the under side of the casting 12 of the gate, the lower ends of which are bifurcated and extend over the shafts 24, there being two such hangers 58 associated with each shaft 24 and arranged adjacent theshaft bearings 22 on the beams 18. Each arm 50 is provided with an upstanding projection 60 which supports the gate when the latter is in the partially opened position as shown in Fig. 3, the supporting surfaces 54 resting upon the upper ends of the projections 60. The carrier bar 38 is provided with a rearward projection 62 which isconnected with the piston rod 36 by a pivot pin 64. When the gate is in its advanced position as shown in both Figs. 1 and 3, a projection 66 on the forward end of the gate is in engagement with a downwardly projectin stop lug 68 on the frame 6.

Vith the gate in closed position as shown in Fig. 1, it is tightly held up against the flange 10 of the frame 6 by means of the cam rolls 52. WVhen it is desired to open the gate the piston rod 36 is retracted which acts to shift the sliding bar 38 rearwardly which in turn through the depending arms 44, rocks the shafts 24 in a counter clockwise direction which swings the arms 50 downwardly and forwardly to bring their cam rolls 52 awayfrom the supporting surfaces 54. This movement of the cam rolls 52 permits the gate 16 to be gradually lowered by gravity until -.it engages the upper ends ofv the arm projections 60 which limits its downward movement, the bifurcated ends of the guiding hangers 58 guiding the gate during this lowering movement thereof. During the continued retracting movement of the piston rod 36 the bar 38 travels with the rod and acts through the arms 44, shafts 24 and arms 50 to move the carrier 16 therewith, the arms 50 being held from further turning movement by the weight of the gate on the ends of the projections 60. The carrier is thus moved a' sufiicient distance to move the ash-gate out from beneath the lower end of the discharge opening of the ash-pit so as to permit the contents of the ash-pit to be discharged therefrom.

When it is desired to move the gate into closed position, the piston rod 36 is advanced and acts through the shifting bar 38, arms 44, and rock-shafts 24 to move the carrier and the gate therewith, the weight of the gate 011 the upward projections 60 holding the rock-shafts 24 from turning movement T at this time. This advancing movementof the gate continues until the projection 66 on the forward end thereof engages the stop lug 68 which arrests the movement of the gate so as to position it directly beneath the discharge opening of the ash-pit. During the continued advancing movement of the piston rod 36 after engagement of the projection 66 with the stop 68, the shifting bar 38 acts through the arms 44 and rock-shafts 24 to swing the cam roll arms 50 upwardly, which causes the cam rolls 52 to act on the bearing surfaces 54 to force the ash-gate upwardly against the flange 10 of the discharge opening of the ash-pit, so as to tightly and firmly close the opening. The ash-gate is held in closed position by the cam rolls 52, the axes of which are positioned directly above the axes of the shafts 24.

It will be apparent with this construction, whereby the ash-gate in opening that dropped a distance below the discharge opening before it is moved from beneath the discharge opening, and in closing is first returned to said position below the dis charge opening before it is brought against the lower end of the opening, that the opening and closing of the gate is easily accomplished without danger of interference from ashes in the ash-pit, and the ash-gate when in closed position tightly and firmly seals the discharge opening.

Inthe modified construction illustrated in Fig. 5, instead of the raising and lowering of the gate being accomplished by means of the cam rolls 52, such movement is effected by means of arms '70 having their lower ends secured to the rock-shafts 24 and their upper ends pivotally connected with pivot pins 72 secured. in depending ears 74 on the under side of the gate. \Vith this construction, at the start of the retracting movement of the piston rod 36 to open the gate, the rockshafts 24 during their turning movement in a counter clockwise direction swing the ends of the arms downwardly and thus lower the gate preliminary to the continued retracting movement of the piston rod 36 to move the gate carrier and gate from beneath the discharge opening of theash-pit. On engagement of the projection 66 with the stop lug 68 near the limit of the advancing movement of the piston rod 36 to move the gate into closed position, the shifting bar 38 acts through the depending arms 44 on the rock-shafts 24 to turn the rock-shafts you in a clockwise direction and thus act through i tion at the completion of this movement by the axes of the pivotal connections between the arms 70 and the ears 7 4 on the gate being positioned directly above the axes of the rock-shafts 24-.

As will be evident to those skilled in the art, my invention permits various modifications without departing from the spirit thereof or the scope of the appended claims.

hat I claim is: i

1.. The combination of an ash pit having a discharge opening, and means for closing said opening comprising a gate, a carrier for moving the gate into and out of position beneath said opening, a stop for limiting said inward movement of the carrier, and means acting automatically upon the carrier reach ing the limit of said movement to raise said gate with relation to the carrier toward said opening.

2. The combination of an ash-pit having a discharge opening, and meansfor closing said opening comprising a gate, a frame surrounding the lower end of the wall of said opening having a depending stop member, means for moving the gate beneath said opening and against said stop member, and means acting automatically upon engagement of the gate with the stop member for effecting the raising of the gate towards said frame.

The combination of an ash-pit having a discharge opening, and means for closing said opening comprising a gate, a carrier therefor movable horizontally to move the gate into and out of position beneath said opening, arms pivotally mounted on the carrier beneath the ends, respectively, of said gate and acting when turned simultaneously in one direction to raise said gate, and means' for thus turning said arms.

4.. The combination of an ash-pit having a. discharge opening, and means for closing said opening comprising a gate, a carrier therefor movable horizontally to move the gate into and out of position beneath said opening, levers pivotally mounted on the carrier beneath the ends, respectively, of said gate and acting when turned simultaneously in one direction to raise said gate, and means comprising a horizontally 'movable bar connecting said levers for thus turning them. 1

5. The combination of an ash-pit having a discharge opening in its lower end, and.

means for closing said openinrr comprising a gate, a carrier therefor, movable in opposite directions to move the gate into and out of position beneath said opening, means for raising said gate towards said opening when it is moved into position beneath said opening, comprising arms pivotally mounted on the carrier beneath the ends, respectively of the gate, cam rolls mounted on the upper ends of said arms and adapted to act on the under side of the gate to raise the gate upon turning movement of the arms in one direction, and means for thus turning said arms.

6. The combination of an ash-pit having a I discharge opening, and ,means for closing said opening comprising a gate, a carrier therefor movable horizontally to move the gate into and out of position beneath said opening, a. bar mounted for limited longia discharge opening, and means for closing said opening comprising a gate, a carrier for moving the gate into and out of position be neath said opening, stop adapted to be engaged by the gate to limit said movement of the gate and carrier, and meansacting automatically npon engagement of the gate with said stop to raise said gate with relation to the carrier toward said opening.

8. The combination of an ash pit having a discharge opening and means for closing said opening comprising a gate, means for moving the gate into and out of position beneath said opening, a stop for limiting the inward movement of the gate, and means acting automatically upon the gate reaching the limit of its inward movement to raise said gate toward said opening.

9. The combination of an ash pit having adischarge opening, and means for closing said opening comprising a gate, means for moving the gate into and out of position beneath said opening, a combined stop and guiding member for the gate for limiting the inward movement of the gate and for guiding the gate while it, is being raised toward said opening, and means acting automatically upon the gate reaching said limit of its inward movement to raise it toward said opening.

10. The combination of an ash pit having a discharge opening, and means for closing said opening comprising a gate, a carrier therefor to move the gate into and out of a definite position beneath said opening, said gate extending directly overvthe top of said carrier, and means acting automatically up-' on the gate reaching said definite position beneath said opening to raise it with relation to the carrler toward said opening.

'JOHN VAN BRUNT.

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