US1889718A - Gearing for stokers - Google Patents

Description

Nov. 29, 1932. A. E. wElNGARTNER GEAR I NG FOR STOKERS Filed Sept. 16. 1922 8 Sheets-Sheet l N. mw

Nov. 29, 1932. A, E wElNGARTNER 1,889,718

GEARING FOR STOKERS Filed sept. 16. 1922 8 sneets-sheet 2 NOV- 29, 1932- A. E. wElNGARTNER 1,8.39713 v l(rEARING FOR STOKERS Filed sept. 16. 1922 8 sheets-sneet s NOV- 29, 1932- A. E. wEiNGAR'rNER 1389518 GEARING FOR S TOKERS Filed Sept. 16. 1922 8 Sheets-Sheet 4 Nov. 29, 1932. A. E. wElNGAR'rNER 1,889,718

GEARING FOR STOKERS Filed Sept. 16, 1922 8 SheetS-Sheei'l 5 Nov. 2-9,, 1.932. A. E. wElNGAR'rNER GE'ARING FOR sToKERs Filed sept. 16. 1922 8 Sheets-Sheet 6 w W H NV- 29, l932- A. E. wElNGAR'rNER 1,889,718

4GE'AR I'NG FOR S TOKE'R S Filed Sept. 16, 1922 8 Sheets-Sheet 7 Nov. 29, 193.2. A E wElNGARTNl-:R 1,889,718

GEARI NG FOR STOKER S Filed Sept. 16. 1922 8 Sheets-Sheet 8 Patented Nov. 29, 1932` UNITED s'rA'rs .rATsr oFFmE.:

AN'I'HONY E. WE'INGARTNER, OF PHILADEIEHIA, PENNSYLVANA, ASSIGNOR T0 I AMERICAN ENGINEERING COMPANY, 017 ILADELPl-IIA, P:ElIHJSZ'LVNIA,V A COR- POA'I'ION OF PENNSYLVANIA GEARIG Fon. sroxnns v Application filed. September .1(?,: v1922. Serial No. 588,541. p j

This invention relates to mechanism especlally adapted fortransmitting power from a source such as a motor or driven shaft, to

the rams or other reciprocating elements of' automatic stokers, Vparticularly of the inclined underfeed type, and one object of said invention is to provide a relatively simple, substantial and compact spur-gear power'- box for the above purpose, which 'shall pos-V sess a high efficiency and provide the required gear reduction within a minlmum space.

I further desire to provide a novel arrangel ment of spnr Oearing which in addition to being compact and substantial in construcdanger of stripping the teeth when the apparatus is thrown into service while the driving element is in motion.

A further object 'of my invention is to provide means for selectively looking .the Vorbit gears of the planetary system that shall be characterized by its simplicity,` by the absence of all slip, by its quicknessof action through the elimination of linkage, by the absence of Wear, by the fact-that in either of its operative positions it is self-looking, and by the fact that it needs only to. be reversed When it is desired to operate theorbit gears in the opposite direction. i

I also desire to provide a novel' form of power transmitting mechanism especially de-v signed for connection between a driving element and the reciprocating members ,of an automatic stoker, whose nature shall be such as to permit of it being completely enclosed and perfectly lubricated, so that it is protected from accident or injury from foreignl material such as dust, coal, etc., while at the anditsspindle; an

samevtime avoiding hazard to persons in'its fvi'cinity.

A still w to provide a power-box for a stoker 'drive coniprising a. slow-running heavy-duty spurfurtherobject of my inventiofn is gear system adapted to' stoker mechanism,

a high-speed planetary Vgear-system, and

means including a fracturable safety device i for lnormally 'connecting ,the gear systems,

the high-speed system `including'speed-,conf;

trol means.

Still another object of the inventionis to provide a novel combination of parts part'icularly lending itself to the operation of a number of stoker rams from a single source of power, .while 'obtaining the advantages above outlined.

`rl`hese objects and other advantageous ends lIV attain' as hereinafter set forth, reference being had to the accompanying drawings, in

which, i

'Figs 1 andV 2 are respectively a front 'anda side elevation, the latter'showing the crank shaft in section, and illustratingV one form of my inventioni;

Fig.` 3 is a plan of the apparatus shown in- Figs. 1 and 2; a

VFig. is' a Vertical sectiononthe line I Figul;

Fig.V 5 is an elevation, partlyin Vertical section, on theV line 5-5 ,Fig.'1"; n Fg. 6 is an elevation of the left side of the apparatus shown in Fig. 1;

1 .Fig 7 is a diagrammatic Vertical sectionl on the broken line 7- '.7,`Fig. 2, illustrating Vthe operative relations of the several gears; Fig. 8 is a longitudinal Vertical section,

showing two transmitting units constru'cted and connected 'to a driving shaft, inv accordance with myinvention;v i i i Figg is a diagrammatic Vertical section similar to Fig. 7, and taken on'the line 9%9, Fig. 13, illustrating a modificationof my in- Vention; v v i VFig. 10 is a front elevation off'the internal gears and their associated cam;

Fig. 11 is 'a side elevation o fonefofj'the ini ternal gears with the cam;

Fig. 12 is a perspective View of'thecam means constituting important features of my invention. This easing is provided with bearings for a'sleeve or gear cage 2 having parallel arms in which is non-rotatably fixed a spindle 8. lVithin and keyed to the sleeve or planet-carrier is a. tubular shaft a' having a portion 5 atone end of said sleeve toothed to constitute a pinion. 'Journaled within' the i tubular shaft 4 is a driving shaft 6 actuated from any suitable source of power such as a.

motor or line of shafting vas hereafter set forth. This last shaft within 'the casing is formed or provided withia pinion 7 and is also journaled in a bushing 8 within the sleeve 2, being provided with suitable collars 9-9 to retain itin proper position.

The pinion 7 meshes with a planet gear 10 which constitutes one element of the fhighspeed gear system. The gear 10 is rotata'bly mounted on the spindle 3 and integrally or otherwise connected to a second planet gear 11, also on said spindleand having a different number of teeth. Both of the gears 10 Vand 11 are mounted between the arms of the sleeve 2 which carry the spindle 3 and are enclosed within a portion of the main casing structure constituting la ichamber, within which are rotatably mounted two internally toothed Orbit gears 12 and 13 respectively meshingwith said gears 10 and 11.V These internal gears preferably operate side byr'side and are accessible through an ,opening in the casing normally closed by a cover plate 111, in which is journaled one end of the Vsleeve '2.

These internal gears 12 and 13 have their adjacent edges recessed orformed with shoulders so that either of them may be gripped and held immovable by any suitable means such as a self-looking cam or eccentric member 15 mountedbetween them upon a.v short o spindle 16 `iournaled in the Vcasing structure 1. This spindle has fixed 'to its outer end an Operating handle or lever 17 whereby it may be moved from a neutral position to oneside or theother into gripping engagement with either of said internal gears. V

` The gear 5 `on the sleeve ll is preferahly mounted outside of the main casing 1-1, but within a housing or extension 18 thereof substantia-lly concentric with theV shaft G, and mesheswith a relatively wide faced gear 19 of comparatively large diameter loosely mounted on a hub20 which is keyed or other- Wise fixed to a shaft 21 journaled in the main casing structure so as to extend parallel with the shaft 6. This hub has bolted to, it,-concentric with the shaft, a plate 22 which may be operatively connected to the gear 19 by a relatively weak and easily sheared safety pin 23 extending between a pair of suitably formed bushings mounted respectively in the plate and in said gear there being formed in the latter a passageway 24 into which one end of the pin may be easily moved after it has been broken by an excessive load and thereafter allowed to so escape.

A light cover 25 preferably encloses the plate 22 and has projecting lugs or flanges extendinginto guideways 26, so that it is norma-lly maintained in position. A suitable operating arm or'V bar 27 is mounted on the outside face of the coverV 25, providing means whereby it may be rotateld sufiiciently to disengage its pr'oj-e'cting lugs from the guid'e'ways '2G when it is desired to have access to the Safety pin or others of themembers adjacent thereto. p 1 2 Mounted on the shaft 21 within the main casing structure are a pair of gears -30 which constitute elements ofthe slow-ruin ning heavy-duty spur-gear system. Both of these gears have the same number of teeth and meshing'respectively with a second pair of gears' `31-31 fixed to opposite ends of a tubuiarshaft 32 rotatably mounted upon a relatively heavy spindle 33, non-r'otatably fixed in the casing structure. Saidfltubular shaft 82, between the gears 3141-31, has formed integral with it a pinion .311 meshing with a gear 35 which, like it, preferably lies in the central plane of the main casing'structure. v

This final gear 35 'is fixed in any suitable manner to a shaft 36 also journaled in the casingV 'structure and including one or more cranks 87. The latter are especially designed and adapted for the `reception of vconnecting vrods (not shown), wh'erebypower is transmitted to the' rams or pushers of an vautomatic stoker, and the lgear 35, like the other moving parts of my apparatus, is completely: enclosed in the present instance by a coveristructure 38. i 'i Under conditions ofroperation, the shaft 6 isjcontinuously driven by an electricmotor or other source of'power, thereby turningthe gear 'Z and the two gearslO and 11` on 'the' shaft 3 as long as the Operating handle 17 is ,inits neutral position.v This rotation' of the two gears 10 and 11 causes the internal gears i 12 and V13 'to turn 'at different speeds within the 'casing structure. a If howeif'er said handle be turned to one side of its neutral position its cam 15 will engage theshoulderof one of said gears, as for example thegear 12, caus-` ingit to be immovably held, whereupon the continued rotation of the gear 10 will 'causeit to move bodily with the sleeves 2 and l'ahout the Vshaft 6, thereby turning. thel gear 5. Power' is thus transmittedi frompsaid gear to the gear 19, thence through the shaft 21 to the gears 30, l'and 34, 'to the gear 35,'a1id lin to the shaft which is rotatedat a speed (lepending upon tlie speed of the drving shaft 6 and'the dimensions of 'the various gears case. f Should an abnormal load be applied to the crank shaft asv would result from'th'e Jamming of one or tne plungers or ranis of the stoker the safet ;in ''would be sheared off, thus disconnecting` the gear 19 from the 1' shaft 21 without doing inJury to any of they parts of the device. VThe broken Safety pin may be replaced by a new pin, after which, when the cause of the overload has been removed, the apparatus may be again put in operation. i

' From the above description it will be apf preciated that not only are the` moving` parts so enclosed as to be eifectually pi'evented from dainage froin dust and'foreign bod1es,but,'by

reason of the construction shown, they niay be supplied :with a lubricantsuch as asuitable grease or oil, which will inaiiitain them in the best working condition. Tlie possibility of' injury to workmen from the power transmission gearing istprac'tically eliininated and it is'especially to be noted that the device throughout utilizes spur 'gearing for trans-j mitting power from the driving to the driven members. z a i s i The arrangement is such moreover, .that said gearing operates at relatively: high eiig vciency, in one case about 70% and, as shown in Figs. 7 and 8, lends its-elf particularly to an arrangement wherein power is'supplied to a number of transmitting'units from va single source. In such case the shafts G of two such units are brought into substantial aligninent and are connected by one or more lengths 40 of shafting thr ugh universal joints 41-41. These latter, as well as the connecting shaft 40, are preferably enclosed Within a tubular casing 42-extending into the housing extensions 18 of the two transinitting units so that there are no exposed movingv parts. i i

By the use of universal joints and connecting shaft itis possiblel to operably connect two units even though after connection they should change their relative positions by reason of foundation settling` or expansion effects, due to the operation of the stokers with which they, are associated.

In addition it is to be noted that atthose points where severe stresses'are developed under Operating conditions, as in the supporting Vstructure adj acent the cranl'ror drivi en sliaft, the gears are so arranged 'as to be balanced,'thereby avoiding in a largeineasure objectionable side'or torsional stresses.` As a consequence, liability of undue wear or breakage is avoideol. Moreover by using` f planetary gearing in the combination shown, g I am enabled to secure efici'ent and relatively large speed'reduction between the driving and driven elements,`*while Vusing acompact,

simple and'substantial combination of gears.

Under certain conditions, as when the gearing is not required to be so compact as in that form of my inventionshown inFig's.

1, to 7 Imay inaterially enlarge the diameter I of-the gear Wheel 35a onthe crank shaft and omit the intermediategears 31-7-81, 311 andl one 'of the gears 30,t'irrangngthe-second:`

O'ear' :as showni'n Fiff. 9v :so that it lies'in 7 the plane of and meshes with said gear a.

n' other particulars. the construction of Fig. 9 is substantially that previously descrlbed, it being noted that in all cases may einploy either a single set of planetary gears or more than two suchsets', without departing from iny'V invention. .w w Tnv that form Vof invention shown in Fig. 9, as in that 'spreviously described, the

gearing is so associated'withthe cranlrshaft whole is supported that, as above pointed out, the' side stresses on said frame gearing arereduced to a minimum; the 'arrangeinent lx ng'balanced and for the most part subjectthe structure to compression ortension.

a t is further to be'notedthat by'V using a cam ofv the 'peculiar Aconstructioni shown tie device may beadapted'withf the ut-m'ost` case 'to 'suit" operation of the internal gears in either direction. T`When the 'cam' is ar-V ;aiidwiththe casing or frame in which the ran'ged asshown' in Figs. 4 and 10, forfexf ample, the internal gears 112l and '13 aredeusigned'to rotate in a counterclockwise `direction. i if howevertit .is required that vtheseV with theirl associated` parts should rotate in the op'positedirection, it is obviously 'a simple matter to remove the supporting spindle with its camand turn it through 1800 so that when it is'again mounted in the casingstructure said cainmay be moved to one sideor the other; to'blocka clockwise'moveinent of the i internal i gears; w

I claim: o V 1.-The lcombinationin agear unit of'di'iving andidriven shafts-;a train of. gears connectiiig said shafts and'including a plurality of -orbit gears and'jacorresponding plurality Vof planet gears, the'forrner including'two ad- Jacentgears liav1ng'-shoulders on their acha-V cent sides; with a cam mounted between said acent gears andmovable. at will into hold- ,ing engagenient therewith vfrom aneutral position W 2, The combination inazgear unitv of drivs ing andlrivenisha'fts;trainwof gears con-,p nectingisaid shafts and including afplurality of orbit gears and a correspondingplurality 1 of planetl gears,the 'foriner *including two.

;adjacent gears each having twoshoulders on their adjacentsides with a reversible cam mounted between said latter gears and movable at will into holding engagement with the Shoulders thereof from a neutral position, said cam being formed to be capable mounted' within tlie casing on saidl driveri 'planet carrier; and means mounted between said Orbit gears for gripping any one of them at will to prevent rotation thereof. i

4:. A gear unit consisting of a supporting casing; a driving and a driven shaft; a train of spur gearing -connecting said sliafts and including a plurality of planet gears and a plurality of cooperating Orbit gears, said Orbit gears including two rotatably mounted members supported adjacent to each other within the casing;-a device mounted between said members for ffri ino' either of them at will to prevent rotation thereof ;and a handle for actuating said device.

5'. A geai'punit consisting of a supporting structure; a member rotatably mounted thereon land including a gear; a driven shaft actuated from said gear; a driving shaft coaxial .with said member; a gear On said driving shaft; two gears :having different numbers of teeth rotatably supported by said member vand drivenfrom the gear On the. driving shaftrtwo intei'nal'gears rotatablymonnted on the supporting structure and respectively engaged by the gears carried by said member; with a reversible cam for preventing rotation .of either of the internal gears' at will. 1 j

6. In combination; a supporting structure; a rotatable member journaled therein a pair of pla et gears on said rotatable member; ai tubular shaft co-axial with said member; a

driving shaft co-axial .with 'said tubular shaft; a gear on said driving shaft foi` actuating said planet gears; a pair of Orbit gears rotatably mountedon said supporting structure; and a cam operatvelyV associated with said Orbit gears so as to selectively lock the same. z i

7. Power transmission apparatus -comprising a pair of Orbit gears apair of Shoulders individual to each gear; and a revei'sible lock-4 ing member movable into engagement with one shoulder of each gear but when rever'sed i movable ;into v engagement, with the remaining Shoulders.

8. Power transmission appa'ratus comprising a pair of Orbit gears having spaced shoulders;vand a self looking member movable lfrom a neutral position' intermediate said shoulders into engagement with one or the other of said Shoulders.

9. Power transmission apparatus comprising a pair of Orbit gears having adjacent faces recessed to form a pair of shouiders; and a self looking cam respectively movable into. gripping engagement with said shoulders. o

- 10. A stoker-drive power; boxl comprising a variable speed gear train; said, train including a pair of Orbit gears for respectively determining' the Adifferent speeds of said train; and a looking inember positioned between Vsaid Orbit gears for looking oneV or the other depending. upon the desired speed o f Vsaid train.

11. A power box Vcomprising a drive shaft; a drivenfi shaft; a train ofvspur gears permanently in mesh'eztending between said shafts; Va pair of Orbit gears operatively asseciated with said gear train and adapted when locked to control the speed thereof, said Orbit gears havingadjacent Shoulders; and looking member movable from a neutral position internjiediate said Shoulders into engagement with one or the other of the same.

12, power-box comprising a high-speed system having Orbit and planetary gears; a sun gear operatively connected with said planet gears, self-looking means'movable into holding engagement with the desired one of said Orbit gears for controlling the speed of 'said planetary gears. z

ANTHONY E. WEINGARTNER. 'i

Images