US1153124A - Hoisting-engine control. - Google Patents

Description

Patented sept. 7', 1915.

. 3 SHEETS-SHEET'I.

ATTORNEYS 'W. 1. LILLY.

HOISTING ENGLNE CONTROL.

l APPLI'CATION FILED PLZ, i914.

Patented sept. 7; 1915.

3 SHEETS-SHEET 2 AUM/VHS l lllll l..

W. I. LILLY. HoIsTING ENGINEcoNTRoL.

APPLICATION fIfLED APRA. 19I4.

wir/M3858 A rromvfwys i drawings forming a part of this specifica- OFCE WILLIAM J. LILLY, OF BUTTE, MNTAITA.

4 OISTING-ENGINE CGNTRL.

To all w71 om z'z m 01.1/ concern Be it known that 1, W'ILLIAM .l. ILILLT, a subject of the King of Great Britain, residing at Butte, in the county of Silverbow and State of Montana, have invented certain new and useful Improvements in Hoisting-.Engine Controls, oi which the following 1s a specification. Y

My invention relates to the control of hoisting engines and parts associated therewith, my purpose being to prevent overspeeding of the hoisting mechanism carrying the skip or cage. A

More particularly stated, my invention comprehends improved mechanism, controllahle bythe speed of the hoisting mechanism, for shuttingr off the power of the hoisting engine and for applying the brake mecha nism. y

My'invention further comprehends mechanism, controllable partly by the speed of the hoisting mechanism and partly by the relative positions assumedby various movable parts, for stopping the hoisting engine andapplying the brake mechanism in the event that the operator fails to check the speed of the hoisting mechanism when'the skip or cage reaches the proximate end of its tripeither upward or downward.

Reference is. made to .the accompanying tion, and in which like letters indicate like parts. 1

Figure l is a side view, partly in elevation and partly diagrammatic, showing my device used in connection with a hoisting engine and brake mechanism associated therewith. Fig. l is a detail view, showing in perspective various parts of the weight-controlled tripping device for stopping the hoisting mechanism. Fig. 2 is a detail View, partly in side elevation and partly in section, showing the speed-controlled mechanism for throwing the tripping'device into action, and for indicating by. appropriate signals any'danger due to overspeeding. Fig. 2a is a detail of the alarm mechanism. Fig. 3 is a front elevation of the mechanism shown in Fig.v 2.

VThe hoisting engine is shown at 4, the throttle valve at 5, the throttle mechanism at (i. and the throttle shaft at 7. Mounted rigidly upon this throttle shaft, is an arm 8. An actuating bar 9 is provided at one of its ends with a link 10, the latter fitting slidably upon a pin 11 carried by the Specilication of Letters Eatent. l Patented Sept. 7, 1915. Appncation ined .epm z, 1914. serial No. seams. i

ing as the engineers stand, and the lever 11 is connected with the rod 13.

The brake drum, forming a part of, the

hoisting mechanism, is shown at 16.l The brake shoes appear at 17, and connected withthenu are brake levers 18. The brake shoes are supported upon rocking arms 19, having Ythe usual or any preferred form. Connected with the brake levers 1S are rods 20, which are also connected to a lever 21 l which is journaled upon a pedestal 22. Piv- 'otally connected to the lever 21 is a connecting rod 23, the latter being also connected by a pivot 2% with the sliding head of a brake engine 25. This brake engine may besubstantially of the usual or any desired construction.

The brake drum 16 is provided with gear-` ing 26, the latter being connected with a revoluble shaft 2T, this shaft being connected by gearing 28 with a counter shaft 29. Mounted rigidly upon this counter shaft is a bevel pinion 30, which meshes with a bevel gear 31, as indicated in Fig 1. The bevel gear 31 is mounted rigidly uponA a worm shaft 32, which carries ay worin 33 and is journaled in bearings 34. A worm gear 35 meshes with the worm 33 and is driven slowly thereby. Mounted rigidly upon a shaft 29@L is a gear wheel 30a meshing with the gear 31 and upon the upper end of the said shaft is a gear wheel 36, which meshes with another gear wheel 37, the latter being mounted within a spider 38 constituting the upper portion of the frame work. Supported by this spider, is a sleeve 39. A centrifugal governor 40'is supported by the spider 38 and sleeve 39, and is provided w'th a governor rod 41, slidably mounted -a-ld adapted to play vertically. The spider 38 is supported by frame work 42, the latter being provided with a cylindrical bearing 43. Extending through this bearing and yloose relatively to the same is a sleeve -l-l lou with spokes 45a and with a hub portion 45h, these parts having together the proximate form of a large wheel, may be understood from Figs. 2 and The worm wheel is secured rigidly npon one end ci? tubular shaft 46, which extends through the-sleeve 44, and is loose relatively to the latter.

The spider is provided with an annular rack 47 .carrying rack teeth 48 extending radially inward. The spider t5 is further rfi-oil ll, integral with it, and with the annular rack just mentioned, for the purpose of supporting the latter.

, Fitted upon the annular rack 47 is a sl1de 50, rovided 'with a number ot notches 5l (see Fig. 8), these notches being disposed 4 screw 55, notches 56, 'and a lug'57. Thisy slide is adjustable relatively to the annular rack 17, but its notches 56 are. upon the opposite side of the'lug 57 as compared with the position of the notches 5l relatively tov the lug 52.

Extending entirely tlirough the tubular shaft 4G is ay rod 58, the outer end of this rod being connected by a bearing 59 -to' an arm 60, this arm being journaled upon a pin i 6l. Integral with the. arm 60 is another arm (S2, these two arms together forming aA bellcrank lever. Connected with this lbellcrank lever is a pawl carrier'GS, having the ortn'o a slide, and mounted within a hollow' arm (54;. The pawl carrier G3 is adapted to be moved radialily inward or outward.` The hollow arm '64 carries a. bearing 64 which supports lthe pin 61 and the bellcrank lever just mem'sioned.`

.A pawl 65, having inthis instance the form ot' a trident head, isby aid 'of a pivot pin 66 mounted upon the upper end of the f pawl carrier 63, and has a. slight rocking movement relatively to said pawl carrier.

The rod 58 is connected by a bearing 67 (see Fig. 2) with the lower end of a bellcrank lever 68, this lever having an arm 69 extending horizontally. Pivotally connected with the arm 69 isa link 0. This link is also pivote-ily connected to a pin 70a carried by the governor rodrl. A weighted lever 72 mounted upon a pin 71 'extends into engagement with the lower end of the led 'with a reduced annular portion' governor rod 41, and is movable by the vertical movements of this governo` rod. The beller-ank lever`68 is supported upon a shaft 73, journaled in the frame work. Secured rigidly upon the shaft 73 and extend-v ing upwardly therefrom is an arm 74, prof. vided witha number of holes 75. An actu-l ating bar 7 (i is connected with the arm 74, and is adjustable by'aid of the holes 75. The actuating bar 7G is provided with an adjustable link 77, which may be secured in two positions relatively to a pin l77. The bar 76 is operated by hand, for the purpose of actuating thelarm 74, and of leaving the latter in either of two normal positions. At 78 and 79 are shown various levers and other movable parts, connected with the I hand levers 141 and 1l, control ofthe engineer. The weight SO, under control of the brake engine. is connected with the main-brake lever 21 for the purpose of actuating the latter, and thus setting the brake.

Journaled within a. pedestal 83 is a shaft- 82 (see Fig..1). carrying an arm 81, mounted rigidly upon it and pivotally connected` with the actuating bar The shaft 82 also carries an arm 8i, secured rigidly vupon it. Pivotally connected with the arm 84, and movable by it, is arod 85, for controlling. thev brake engine and causing lthe brake' mechanism to be set.

Mounted rigidly upon the shaft 82 isI an. arm 86, and this arm carries a Weight" 87 for turning the shaftSQ. The arm 86 is connected with a dashpot 86?, for prevent-4 ing unduly rapid or jerky movements of the arm 8 6 and shaft 82. YPivotally mounted adjacent the outer or free end of the arm 86 is a lever 88, which is engaged by the arm 8G. A bellcrank lever 89, serving theypurpose of a trigger, is lprovided with a lu 89, which engages an adjacent portion 0 lever88, as indicated in Fig. 1, By bringing the `parts 88 and 89 into the relation inand therefore under the dicated in Fig. l, the lug 89. restraius the llever 88,y andthe latter supports the arm 86 i' carrying the weight 87. If, however, the l bellcrank lever 89 is turned slightly in either of two directions, the lever 88'is released and disengages the arm 86, whereupon this arm swings downwardly under action of the weight 87'. The shaft 82 is thus rocked, the arm 84 and rod 85 are moved downwardly, and the brake mechanism'is thus set.' l

In order to actuate the bellcrank lever r89, I connect a rod 90 with it, as indicated in Fig. 1., The upper endof this'rod is pivotally connected to another bellcrank lever. 91, which at its top carries a, U-shaped bearing 92. 93 which vextends intothis bearing, and allows the annular rackto havenv slight f rocking movement, but not to rotate to any considerable extent. i

l nl The vannular, rack 47 carries a `pin ,4 i

various revoluble parts (l5 turns 1n a contra-clockwlse direction `ac-.

Arussia-r The alarm mechanism is shown at the left Fig. 2 and in Fig. 2a. A contact 94 con- ,ls an electric bell 95, and is .connected c ewith by wiring 96. The contact 94 is, alinement with the 'rod 58, and so posioned that when this rod moves to the lett. wording to'Fig. 2, the contact is closed .aal the bell energized accordingly.

`Another contact 97 is in communication with the bell The worm 35- carries a -zpring 98, which is adapted to engage the contact 97 (see Fig. 2) and close the same, so as to complete a circuit through the bell 95.

. The spring 98 is carried a post 99 eX- `tending outwardlv from the adjacent face These. parts are so of the worm wheel arranged that when the worm wheel, in turning, reaches one of the limits of its travel..it causes the spring 98 to close the rontact 97 and thus ring the bell.

The gearing t'or turning the worm wheel and parts driven thereby is so arranged that the travel ot' the worm wheel is very slow. the entire rang'.l of travel of the Worm Wheel being less than one complete revolution. Huch beingthe ease, the arm 64 and pawl carrier 63, together with the pawl 65, always turnless than one complete revolution in either directionthe limited amount of rotation which these parts undergo representing the aggregate amount of travel of the skip or cage, or in other words, corresponding to the maximum number of strokes ever made in either direction by the hoisting engine.

Theparts are so arrangedthat when the hoisting engine runs in onel direction, so as to lower the skip or cage, the arm 64, pawl carrier 63, and pawl 65, rotate in ya contraclockwise direction according to Fig. j 3. lVhen, however, the skip orcage is being raised, the arm, pawl carrier and pawl in question rotate in a clockwise direction according to this figure. 1

The operation of my device is as follows: The parts being assembled and arranged as described, the ehgineer starts up the hoisting engine to raise or lower the load, consisting, say, of a skipY or cagef lt the load is to be lowered, the movement of the is such that the pawl cording to Fig. as above stated. Because ol this fact, the pawl 65, in moving around, tends to'come into engagement with some of the notches .5G- provided the speed is not slackened. Then the engine is running at full speed. the pawl 65 willenter the notches 56, but if the speed of the engine be slackened, the pawl will escape the notches. It'. therefore, as the load nears the lower end of its journey, the engineer causes the. speed of the hoisting engine to decrease, the governor 40, by actuating thevarious parts controllable by the governor rod 41,

causes the oawl to be graduallv drawn radially inward, and to thus miss the notches 56. The excessive speed being vthus taken care of, the pawl will still engage the lug 57, unless the engine is stopped'completely by the time the load reaches its destination. Unless the engineer stops the engine as just mentioned, the pawl, by engaging the lug 57 or the notches 56, presses upon the slide 51 and rocks the annular rack 47 slightly ,in a contra-clockwise direction, according to Fig. 3. This actuates the bellcranl lever 91, causes the rod 90 to be thrust' downwardly, and this rocks the bellcrank lever 89. The lever 88 being thus disengaged, releases the arm 86, and the weight 87 thereupon drops. This rocks the shaft 82, pulls the rod 86 downwardly, and causes the throttle mechanism of the engine to be actuated so as to cut ott the power. to be set.

`Where the load is being raised insteadot lowered, the action is quitel similar to that just described, except that the various revoluble parts move in the opposite direction, and the i pawl 65 is brought against the notches 51 or lug52 of the slide 50,'instead of against corresponding parts of the slide In the event of the engine overspeeding, either in hoisting or lowering the load, the rod 58 moves to the leftaccording to Fig. 2, and causes a contact to beV made at 94, which rings an alarm for overspeeding. If, now, the engineer fails to slacken the speed of the engine,the action of the governor mechanism thrusts the pawl 65into the. teeth 48, which causes the rack 47 to turn. This shuts off the power and sets the brake, thus stopping the engine.

As the skip, in being raised, nears the surface ot' the earth, the contact spring 98 (see Fig. 2a) is brought into engagen'lent `with the rontaet spring 97, thus completing a circuit and causing the bell to ringfl The en gineer is thus warned to slow down the engine so to prevent the pawl 65 from engaging with the teeth 51 and the slide 50, and thus having the control mechanism stop the engine.

Then the skip or cage is intermediate its extreme positions, it at any time the speed of the engine becomes excessive, the speed governor mechanism is actuated, rod

-58 is thrust against the button which closes the contact at 9i, and rings the bell for overspeeding, and the paw] 65 1s moved radially It also causes the brake outward and into engagement with the an-|- nual rack 47, the latter being thereby turned slightly, and caused to actuate the various movable parts controlled by it, so that the throttle is actuated and the power cut oil, the brake being also set.

The parts are so proportioned and arranged that the engineer has an opportunity,

after receivinga Warning signal from the bell, to check the 'speed of the engine or to shut off the poiverk as may be. It is preferable that the signal be first givenk so that Ithe engineer may have a chance to heed it, and if he fails to do so, the mechanism Will be brought automatically to a standstill.

l do not limit myself to the precise mechanism shown, as variations may be made therein -Without departing from the spirit of my invention.

Having thus described my invention, What-A I claim as new and desi-re to secure by Letters Patent is as follows:

l. A 'device of 4the character described, comprising a `frame, a spider supported lthereby and free to rock, a rack carried by said spider, a stop mounted upon said rack, an arm supported by said frame .and movable relatively to said rack, a pavvl carried by said 'arm and. adapted` to engage said rack so as to actuate said spider, speed controlled mechanism for shifting said arm toward and from said rack, a prime mover and mechanism connected with said spider and controllable by movements thereof for controlling said prime mover.

2. A device of the character described, comprising a hoisting drum, speed-governor ymechanism connected therewith and controllable by the speed thereof, a revoluble shaft geared inl operative relation to said drumand driven thereby, a radially movable arm carried by said revoluble shaft,

paWl mechanism connected with said. speedgovernor mechanism' and movable thereby in the 'general direction of the length of said. arm, a movable rack of annular form disposed adjacent Athe path of travel of said pawl and so positioned as 'tobe engaged by the latter when said hoisting (li-,uni is driven at ,excessive speed, and mechanism connected with said movable rack vand actuated therebyv for controlling motions of said hoisting drum.

3. A device of the kind described, comprising a hoisting drum, speed-governor mechanism connected therewith and controllable by the Ispeed thereof, a revoluble shaft geared in' operative relation to said drum, a radially movable arm carried-by said shaft, a pai'vl/carried by 'said arm, connections from said speed-controlled mechanism to said pawl for the purpose ofV moving said aWl toward and, from the axis Vof rotation of said arm, a movable rack of annular form disposed adj aeent the path of travel of said pawl and so positioned as to be engaged by said pavvl when said speedgovernor mechanism acquires a predetermined excess of speed, and mechanism connected With said movable rack and actuated thereby for controlling movements of said drum. 4 n

4. A Idevice. of the kind described, comprising a hoisting drum, speed-governor mechanism connected therewith and controllable by the speed thereof, a revoluble shaft geared in operative relation to said drum, a radially movable arm carried by said shaft, a pawl carried by said arm,fconnections-from said speed-controlled mechanism to said pawl for the purpose of moving said paWl toward and from the axis of rotation of said arm, a movable spider provided Vwith a circular member disposed adjacent the path of travel of said pawl, a stop adjustably, mounted upon said circular member and provided with surfaces disposed adjacent the path of travel of said paWl, so as tobe engaged .thereby when said speed-governor mechanism acquires a predetermined excess of speed, and mechanism connected withsaid circular member and controllable thereby for stopping said hoisting drunm 5. A device of the character described comprising an annular rack provided with teeth-extending radially inward, stop members adjustably mounted upon said rack and provided with notches` a pawl to be engaged by said notches or b v said teeth as the case may be, a revoluble arm in which said pawl is slidably mounted, a bellcrank lever ycarried-by said revoluble arm and engaging -said pawl for thrusting the latter into engagement with" said teeth or with said notches, a connecting rod connected with said bellcranlr lever, and speed-controlled lgovernor mechanism connected withy said connecting rod for actuating the same.

(5. The'combination of a frame, a revoluble sleeve extending therefrom, a spider the combination With the throttle of an engine of, a member mounted to rock, a govrnor, means controlled by the governor for rocking said member when the engine isrunning at excess speed and also when the speed has been slackened, a Weight operated lever mechanism connected with the throttle of,

the engine, and a trip operated by the rocking `member for releasing the .said lever.`

mechanism. v

8. .In a device of the character described, an engine, a member mounted to rock, a brake mechanism, a governor, means con- 1- trolled by the governor for rocking ysaid member when the engine is running at excess speed and alsov when the speed has been slackened, a weight operated lever mecha-v nism connected with the lever mechanism,

iso

' the combination with the throttle of an engine, and a brake mechanism, of amember mounted to rock,t a governor, means controlled by the governor for rocking said member when the engine is running at ex-l cess speed and also when the speed has been slackened, a weight operated lever mechanism, means for connecting thelever mechanism with' the throttle 'of the engine, means for connecting the lever mechanism vwith the brake mechanism, and a trip operated by the rocking member to release the lever mechanism.

'10. In a device ofthe character described, a rack mounted to rock, a stop carried by the rack, a governor, and a pawl controlled by the governor for rocking said rack.

11. In a device of the character described, a rack mounted to rock, a stop carried by the rack, a paWl for engaging the' rack .for rocking the same, a governor, a sliding memberoperated by the governor, and means o'perated bythe sliding member for moving thekpawl in and out of engagement with the rac member, means for operating the sliding member from the governor, and a bell crank 12. `In Iagi" "lee of the character described,

' two subscribing lever engaging the parvl and opemted by the sliding member. f'

13. In a device of the character described,

a member mounted to rock, a stop carried by the member, a governor, and a movable member controlled by the governor and 4adapted to engage the stop` of the rocking member to rock said member.

14. In a device of the character described, a member mounted to rock, a stop carriedby the member and having avplurality of surfaces projecting diierent distances from saidmember, a governor, a movable memfor moving said m/ember into' the path of dierent surfaces of the stop to rock said member according to the speed ofthe en- `ber, and means controlled bythe governor rality of surfaces projecting different distances from said member, a member mounted to turn and slide, and means controlled by the governor for moving vsaid member into the path of different surfacesof the stop according tothe s eedof the engine.:

In testimony whereo I have ,signed my name to this specification in the presence of Witnesses.

WILLIAM J. LILLY. Witnesses:

NICHOLAS T. TRETHEWEY, WILLIAM E. CARPENTER.

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