US1122687A - Machine for producing multiple power. - Google Patents

Description

J. Y. CLARK.

MACHINE FOR PRODUCING MULTIPLE POWER.

APPLICATION IFLED JUNE 7, 1913.

1 1 22,687, Patented Dec. 29, 1914.

3 SHEETS-SHEET 1.

WITNESSES INVENTOR wvaw w in J. Y. CLARK.

MACHINE FOR PRODUCING MULTIPLE POWER.

APPLICATION FILED JUNE'T, 1918. 1,122, 1 Patented Dec.29,1914.

3 SHEETS*'SHEET 2.

WITNESSES INVENTOR I I ew J. Y. CLARK. MACHINE FOR PRODUCING MULTIPLE POWER.

APPLICATION FILED JUNB7, 1913,

Patented Dec. 29, 1914.

3 SHEBTS BHEET 3.

6%. am fl NVENTOR WITNESSES wkw UNITED STATES PATEENT. OFFICE.

msms'ym ni'ctm'x, or wiulvnws.biz-MfrTom QANADA;

mAcBifi ton rnonuomq mun'rrrnn nownn Application filed June '7, iaiassemiiiv z 772ml;

To all whom it may concern:

,Be it known that I, JOSEPHYANCEY CLARK, of the city of Winnipeg, 1n the Province of Manitoba, Canada, have 111- vented certain newand useful Improvements in Machines for-Producing Multipletion eon 'sts essentially in a plurality of similarly constructed elements capable of storing up and releasing potential energy, said elements being connected to and carried by a rotetably mounted shaft, means for successively storing up potential energy in the respective elements, means for autoieticelly releasing successively the potena tial energy so stored and in so doing rototing the shaft carrying the elements, and

- means whereby the action of the elements on win be controlled to permit any l nu er of them to be put in operathi parts 'oeing arranged and con- "cted hereinafter more particularly de and later pointed out in the an gent c claims,

Referring to the drawings,-I igure 1 represents a side view of my complete machine: Fig. 2 represents a vertical sectional view through the machine, the section being taken in the planedenotedhy the line XX' Fig. 1. Fig. 3 represents an enlarged detailed vertical sectional view through one of the clutches employed, the shaft carrying the clutches being shown in side elevat on. Fig. 4 represents an en larged detailed Vertical sectional view through the shaft carrying one of the controlling arms, the arm being shown in side elevation.;. Fig. 5 represents an enlarged detailed vertical sectional view through one of the springs employed and adjoining parts. F 1g. '6 is an enlarged detailed perspective view showing one of the trip-dc vices for engaging.:and disengagingone of tne olutchess: Eiga? isarr'enlarged perspecti vew'iew of theibezirin-g's carrying one of the springs. F 8 represents an'enlarged sectional riew throughthe topshaft at Y-Y showing the controlling leversin side elevation. Fig. 9 is =nnzenla-rged detailed perspective "iE-Wilfifil' pontiiins'ofnneio-f the hell cranks and adjoining; pints ,In the drawingi'lili v ence indieatel-ciir espon mg parts in each figure. i i

- l, 2, 4; .14 and 6 represent similar standards, all priori'ded withr'crossmembers 7 and upright members .8, th'e snid standards be ing suitably spaced sapartnnd nlined and fnstenedper-ninnently'lbyholts 9 to :1 supporting haser-lll. nw w ll represents aj'loweri :shnft rotatably mounted insnitlihleihenrings l2 'crried by the standards. ends with fly hvlieelsi f3 end El i-the latter carrying atqfniileyi onnectetl through a belt in with -seqiulley'lllocatedon the drive shaft 18 ofuin lectrie:motor 19. The niotor. is shownnsonej'iof the many forms of driving means which could be utilized for rotetingt-heshaftll.

0n the-:shfit ind; beltwcenlthe'stand erds I hum plsaced firicti-on clutches 20 21',- 32, 23 ande'figi-rvhiiih iconiprisexin each in-. stance thfmllowisigi pastim -ch rotutehly m" united female eli'ztbh niem'her audio slid. ably mountedihaledclntoliEmieniher 26, the

clutch zmei'nbsi diasing-e beveleil ed designed uport "said inule= clutch member be ing shifted't'o make frictionslcor'ituct with the female clutch member, the inner face of which iss'beveled out to receive it. The femaleclutch members as before stated are mounted f'fr'eely dnetheushaft and carry integrul drumsli'l $8,229,.3Q and-81, the drumsand clutclr members-being:ipnevented" from end displacement-ion liheshaft by collars 32 and 33 fastened inwa'nywsuitahle way to'the shaft. 9, 2

The male clutChmembersQG are held by feathers 34-750 that' they rotate with the shaft although they are free to slide ondwise on the shaft laach mii-leclutch member is coupled ton shiftablc sleeve 35 in such a manner that'the gmal'e .clutch member is compellcd to,shift'endwise with. the "sleeve but can rotatflindependent: of: the; sleeve. A

s iral spring fifiiisi mounted between each of t e sleeves and the adjoining .bearing- 12,

meters of reierthe tendency of-thefsprin'gin each instance being to engage the clutch members. h r A .37 38, 39, wand-41 are clutch controlling bell cranks'pivotally secured-by pins 42 to the respectirestandards. Eaclrbell'cra'nk has a, vertically vand -horiz ontally disposed portion, the horizontally disposed portion passing more or less directly over the clutch for a purpose later-e'a'plai'iidfivhiletheiertically disposed portion passes downwardly and spansjthe sleeve 35 adjoining ea-ch male clutch member. Pins 1:3 g-fasten these ver: tically' disposed portions of the'bell cranks pivotally to the sleeves.

Hjs a. hollow top or upper, shaa' muer with the bottom shaft andsuitably mounted in similar. bearings 45. permanently-secured to the standardstl, 2,3,;4, 5 and 6 respectively. This shaftis suppliedat one'end with a pulley4 i and at the other end with a collar 4:7; the colla'rrota'ting with'theshaft and being supplied with a number/of extending lugs, to which I have secured pivfotally controlling levers 48, 49, 5( 51 and; 52, the purpose of these being explained hereinafter. 53 are similarhollow exten sion bearings-permanently securedjby bolts to the faces of the bearings 45 and receiving the shaft {lit freely.

5*,55, 5G, 57 and 58' are' coiled flat springs mounted on the bearing {l and having'their inner ends in eachfinstance fastened to the bearings' 'by lugs 59 cast- 0h the bearings,.thelugs protruding .througl zsuitable openings forniedin the'springs; g

- (S0, (31, G2, (33 andtlt-are groovedwheels 'rot'atahly mounted on theshaft 44 and .ad-

join'ingthe bearings 53.] 'lihese wheelsfare' prevented against end disp'laceme'ntin one direction by having the hubs 35 thereof butting against'the bearings -53'and are further prerentcd from end displacement in the opposite direction, that is inadirection' away from the hearings by collars '66 shrunk on the shaft. The outer'en'ds' ofjthe fiat coil springs are secured permanently to the respective grooved wheels by pins'67. ,In this way the wheels aren irtually tied through the springsand bearings and -15 to the standards. The ends oftheuhubs 65 farthest from the bearings 53 are fitted with ratchet teeth- 3S which teeth are normally engaged ll} complementary ratohetiteeth (39 provided on the adjoining ends of sleeves 70 slulahly mounted on the upper-shaft and cmnpeiled to rotate with the same through the action of feathers 71.

72 are collars lived on the-top shaft at a short (l,l.\(;ll|(ft! fr'onreach of the sleeves 70.

T3 are spiral springs located on the shaft between'the ll'specti\;;%:$lte\'($ and collars, those springs teud'in; to press the teeth 69 continuously into cngagen'ient with the teeth llti'. 1

Ti, 75, 76, 7K and 78 are controlling arms ta te.

suitably mounted; on pivot pins 79 carried by bearing blocks 79 fixed on the top shaft. It is here tobe noticed (see detail Fig. 4) that each controlling arm' is supplied with a projecting lip 79* which is designed to engage with the bearing block and prevent the controlling arm from being swung in a left hand direction farther than the upright position, the upright position being considered as at right angles to the shaft.

\Vires, cables or such like '80-eonnect the respective controlling arms with thercspec tive controlling levers, thesewires passin through the hollow center of .the shaft 4*.

A spiral spring 81 is placed'on each wire z"? ,between' the controlling arm and. the shaft yand holds the arm normally in an upright positionand in so doing also holds the con trolling lever in each casev in an upright position radiating from the shaft. arrangement it will be seen that one can select and swing. one or other of the controlling arms toward the shaft-by grasping the corresponding lever and pulling it in the direction indicated by the arrow 1- Fig. 1.

Assuming that the machine is running and that all the levers are-in a position as" shown in Fig. 1 of the drawings, 0., standing in a position at right angles-to-the shaft, and: that it is desired'to cut out the action of any one of the. springs 73 on the shaft H through ratchet toeth, it would only be necessary to select the :lever corresponi'ling- 'to the controlling arm adjoining the spring.

selected and swing the le -er; downwardl\ to a position'niore orlessalined 'with the shaft.

This actionwouldca'use the cable to pull the controlling arm over so it would miss hitting, in the rotation of thc' shaft 44, the "d pper end of the s'quareactnating shaft;

The resultwould be that the particular trip} mechanism selected would notbe setoil and accordingly by the pulley controlled by said 4 trip mechanism would not be freed to rodown to :1V position more or less parallel with the shaft they become locked-and remain in the-swung down position, in other words, the'wire conneqtrd to the lever is passed to a'position below the pivot point of thcsaid leyerflhen the said lever is swung down. i

It is hereto be noticed that the controlling arms are arranged in different posi By this As ajresult, the associated spring of V the specification.-

.zontaiiy disi'iosed portion tions, each one in the present instance being located one fifth of a revolution in advance of the other.

The bearings 45 provide an extending arm 82 having an oifset end 82 the extremity of which is more or less directly above the extending ends. of the horizontally disposed positions of the hell cranks 37, 38, 39, 40 and 41 in each instance. The offset ends of these arms form upper bearings for trip devices 83, 84, 85, 86 and 87 inserted between the extremities 82 of the arms and the horizontally disposed portions of the bell cranks in each instance, which trip devices are designed to engage or disengage the respective clutch members at predetermined instants depending on the positions of the Wheels. These trip devices are'now described: Each presents a more or less open rectangular frame 88 formed from side members 88' and 83 and top and. bottom members 88 and 88. the side 1oernhers 88 extending upwardly considerably he and the .and being rmreii'ed sii-ilaely in the w ,4 end 82'' of the adjoining arm The vi P end of the side m mber $734" uZ'EOY the arm is oii set to form a trip 8 the purpose of which will he later apparent. A gm" ie liar iii) extends downwardly from the members 8c of the frame and is received slidahly in the end of the horixiimtally disposed portion of the adioining evil crank. Tue top menah r 8% of the frame extends beyond the upright portion 88 of the frame and forms a trip the-purpose of which will be later explained.

It is here to noticed that the upright nwnlver 8 of the fr: is matched. away at the top at 83 on the one side and has the opposite side presenting curved meat #45: \"vhich is received between the. guides 91 ci'a hi 1 91, having the body portion thereof suppl .0. with a catch piece Bi normally enlarged with the end of the horiof the adjoining bell crank in each instance. Each bar 91 supported by a fiat spring fastened permanently to the adjoining standard.

The grooved wheels carry each an ex tending pin 93 arranged when the wheels are rotated in a clockwise direction to engage with the under sides of the top mein' hers 88 of the respective trip devices and.

raise them and when rotated in a counterclockwise direction to engage with the trips 89 of the respective trip devices and de press them.

\Vhen any one of the trip devices is raised iii the manner just described the catch piece 9,1 is released from the end of the hell crank by the action of the curved portion 88 of the member 88*, which forces the bar 91 toward the adjoining standard or away from the end of the bell crank. Immedi ately the bell crank is released the spring 36 operates to throw the female clutch men her 26 into engagement with the male clutch member 24.

When any one of the trip dcvi' cred or forced down in the irian referred to it carries the horizontally disposed portion of the bell crank down with it until the beil crank is again locked by the catch piece 91 the clutch members accord ingly being disengaged.

Eli are brakes lo clutch rnemhr nmncnil rmm cranks. 'ihr with the depending: on

era

95 are and ram ie j cross swung a. mans she i extend and pa nently The i to by referent form in in A trip mechao crate soccer shaft 44 1, wheels. "fin: operate by i stored lit hr The trip dew crate to C; ac the shat! spective cahleson he ii wind up the us 5' up potcntiai energy understood that. the r the motor i In order to heifer i tion 1 will now ics suming that the springs are wound, that is, that the clutches are all out this position of the parts being shown in Fig. l of the oratrings.

The winding of the springs can be ac- :nniplished primarily in any way such as by hand, by turning the grooved Wheels in a clockwise direction. In the present instance one then has the potential energy of tire springs stored up to do work on the shaft it immediately said wheels are releasedv by Withdrawing the latches. The s rin s are controlled by the trip device in such a Way that only one of them is being wound at a time, the Winding being done by the shaft 11 which is rotated by the motor. A small motor will be ettective for this purpose as \viil r -adily be understood. To start the machine so that it can be utilized for dcliwring a considerable power from the pulley lo, the motor having been previously started and the shaft )1 consequentlyrotating. the attendant has simply to .lcprcss the lirst actuating shaft 97 to withdrau the adjoining latch 10% rind release the arm lb? of the wheel 60. The said Wheel immediately rotates owing to the action of the. spring and in rotating turns theshaft it, the controlling arm 7i passing the upper end of the shaft 5)? held down by the attendant. the shaft it continues rotating. the actuating arms 75, TU. 77 and Th successiu-lj engage with the shafts l cessivcly the sereral arms i of th s. respective vihecis til, i311. and lit. Ac-

rordingrly the potential energies stored in the. springs are successive released to on erale on and rotate the shaft 44:.

The trip inm-hanisms are designed that \ery shortly utter the the springs have been relensed the pin A l of the first wheel 60 mgages with the under of the top HMHlbtl 78* of the. trip do e. 8-3 and raises the trip device with thr it that the bell crank $3? released ,3 t to clutch [-20 engaged. This occurs also about the time that the first spring is unwound. Immediately the clutch :10 is engaged the shaft 11 carries with it the drum 2?. the cable Winding on the drum and puliing the wheel 60 in a clockwise direction thereby rewinding the attached spring. The said Wheel is then held against rotation by the latch UH. During the rewinding operation of the first spring the remaining four springs are operating to rotate the shaft. Almost immediately after the first spring is wound the second spring which is at this time almost unwound ZS rewound, its clutch 21 being engaged by the pin it imtuating the trip d ice 8a. 1111-- nit-diately betoic 13H clutch n' S f the ntrolling and sets oil. so

arm el i H'c shalt This operation to speak, the first sprir 8, '09, 101), and Jul and release sue continues as long as the machine is to be used, one of the springs being rewound at a time. According to the arrangement I have live of the springs acting on the shaft to rotate the same for a short. time and four at all other times during one rotation of the shaft it.

In an actual machine the shaft 11 rotates at :1 coniparatitely high speed relative to the shaft 44. 1 may say that as an example in a machne which i have built wherein five elements such as those shown in the drawings are used the shaft 11 rotates sixty-four revolutions to one revolution of the shaft 4%. In this machine it takes approximately eight revolutions of the shaft llto Wind one of the springs. Accordingly it will be seen that in. forty revolutions of the shaft 11 all thesprings will be wound and the shaft 4% will not have at this time rotated 21 complete revolution. During the short time which it takes the top shaft to complete this revolution I have five of the springs operating to rotate the shaft 44 and during the other portion of the revolution of the said shaft 1 have four springs operating to rotate the same.

It will of course be apparent that the springs are Wound very quickly owing to the high speed of the shaft 11. A machine eon- Stltlfittll in accordance with my invention therefore allows me to have a comparatively powerful drive at the pulley 46 with but a .dllllll. motor employed for rotatine' the shaft 11 and controlling the winding and releasing 01' the springs in their proper order.

The maehine is stopped by throwing down the controlling levers which action causes the ontrolling arm '74: to swing toward the shaft H and puts out of the paths of the a tuating shatts. The top shaft will continue to rot owing to the action of the springs each spring in succession uncoiling and then being rewouncl the pins *3 successive y engaging the successive trip devices and engaging the clutches. which clutches are afterward thrown out by the pins again engaging with the trip 89 of the respective trip devices. Once however the respective springs are rewound they are not released the controlling arms are in such a position that they do not engage with the actuating shafts to release the latches. The matlllllt. accordingly when stopped is left in such a state that it is unnecessary to Wind the springs by hand or otherwise as previously stated. [he machine can immediately be started by throwing the controlling levers to a position which will cause the controlling arms to engage with the actuating shafts and then depressing by hand one of the actuating arms to release one of the springs.

I wish to point out that although I have only disclosed live elements, any number of elements ran be used to advantage, this detwo pending on the power requiredto be delivered by the pulley 47. I can also increase this power by usiug'stron'ger springs but in this case a larger motor would" required in order to wind the springs successively.

I do not wishto be litnitedtotiny form of trip mechanism foreontiolli'il "*the winding and releasing of'the'spifl r each element as these could be readilfrnoilified without departing from the' spii'lt, of the invention.

l. The combination conipi isingi a rotaluhly mounted shaft, a p'lurulityjo'f similar spring artuuted elements connected with the s -wft. nun-ins foroperatin the elements to rings indeperid en'tif'the shafts my potential 'evees' 1i eh ments for (nieces-- w nd the 5g 221E002? nil the other H p v v, fift 'permnnent rm means for r gsflel y sotatiug on the haftto w nd the spi'ingsr rel inching the Wheels upon the springs being for eutomiitirully and succeshing ineens id means for end f:

ni means lCC YyLPll as. vi i u g e 7 pa 1 p' standards, a plurality of simi st hl vomited on timf gshnft, sj'ir ngs WW1 one and enunc ated 02 e and stand- (in: opposite end eonue v with the shaft during with therespeetive trip m r lease thev loc heeis nr railty' of supporting standard springs being wound, means for successively releasing the locking means to free the springs to unwind and rotate the wheels and means for coupling the wheels to the shaft during the unwinding operation of the springs, as and for the purpose specified.

5. The combination comprisin a plurality of standards, a shaft rotstab y mounted in the standards, a plurality of wheels rotatably mounted on the shaft and adjoining the standard, a plurality of extension bearings permanently secured to the standards, a plurality of coiled springs having each an end anchored permanently to 9. bearing and an end fastened pernmnently to a wheel, means for automatieelly and size cessively rotatin the Wheels irrespwtim, n the shaft to Wind the springs, means tomatically and sueeessi'veiy if.

wheels against rotation upon the emg Wound, means for sue i mg the locking means to i rotate under the action the s a means for autoinatieeli t 1 and for the purpose spe 6. The combination eoiinpii rality of standards, a top 51 mounted in -the standards, mounted lower shaft carried srds, means for continuous the hearing ii. ends srsmsd drums rotate and s, shaft, eahies connecting 1 grooved wheels. clutch n r with the bottom shaft and tin, designed when engaged to cruise to operate the Wheels and wind it a trip mechanism associai' an. the shit-shes eel v sally disengage the Lil-tiff: n the springs being wound a :1 similar trip devi u wheels ugeinst m springs srewoundl bythe top shaft tion of the spru Wheels with the to 'val the s the purplis 7. The" ornbinati tin IQEYEZI:

rotatnbly inoiuiteil in the ammo shait rotiit'zili ly carried by the stand; 1 means fonontinuously rotating the in 1 the wheels to shaft, extension bearings carried by the standards and adjoining the top shaft, a plurality of similar grooved wheels rotatably mounted on the top shaft and adjoining the extension bearings, coil springs mounted on the bearings and having their inner ends connected thereto and their outer ends fastened to the wheels, a plurality of drums rotatably mounted on the bottom shaft and presenting male clutch members, a plurality of female clutch members feathered on the bottom shaft and engageable with the male clutch members, bell cranks pivotally secured to the standards and connected with the female clutch members, cables connecting the respective drums with the respective wheels, said cables and drums being designed upon the engagement of the clutch members to rotate the wheels and wind the springs irrespective of the top shaft, trip mechanism designed to lock the ulleys against rotation upon the rings eing wound, actuating arms carried y the top shaft and designed to successively engage with the trip mechanisms and release the Wheels, means automatically cou ling the top shaft during the mtervals that the springs are unwinding, tri devices associated with each of the wheel and the bell cranks and designed to automatically free the clutch members to engage the instant the successive springs are unwound, as and for the purpose specified.

8. The combination comprising a plurality of suitable standards, a top shaft r0- tatably mounted in the standards, a bottom shaft rotatably carried by the standards, means for continuously rotating the bottom shaft, a plurality of permanent extension bearings carried by the standards and receiving the top shaft, a plurality of grooved wheels rotatably' mounted on the top shaft, coiled flat springs mounted on and having their inner ends connected to the bearings and their outer ends fastened to the wheels, a plurality of drums rotatably mounted on the bottom shaft and fitted each with a male clutch member, a pIurality of female clutch members slidably mounted on the bottom shaft and designed to engage with the former clutch members, spiral springs engaging with the female clutch members and tending normally to engage the female with the male clutch members, pivotally mounted bell cranks connected with the female clutch members, shiftable trip devices normally engaged with the bell cranks and retaining the clutches normally disengaged, pins extending from the wheels and designed to engage successively with the respective trip devices and free the bell cranks thereby causing the drums to rotate and wind the springs, trip mechanisms designed successivelv to lock the wheels against rotation upon the springs being wound, controlling vided with ratchet arms carried by the top shaft and designed to engage successively with the trip mechanlsms and unlock the Wheels to rotate under the action of the springs and means for coupling the wheels to the top shaft during mounted in the standards, a lower shaft ro- H tatably carried by the standards, means for continuously rotating the lower shaft, an extension bearing carried by each of the standards and receiving the top shaft, grooved wheels rotatably mounted on the top shaft and having the hubs thereof proteeth, flat coil springs mounted on the bearings having their inner ends secured thereto and their outer ends fastened to the wheels, spring pressed sleeves slidably mounted on the top shaft and provided with ratchet teeth complementary to the former teeth, said teeth being designed to pass each other freely upon the wheels being rotated in a clockwise'direction and to engage upon the said wheels being rotated in a counterclockwise direction, drums rotatably mounted on the bottom shaft and provided each with a male clutch member, female clutch members feathered on the bottom shaft and engageable with the male clutch members, spiral springs associated with the female clutch members and tending normally to engage them with the male clutch members, pivotally mounted bell cranks connected with the female clutch members, a shiftable trip device carried by each of the standards and engaging normally with the bell cranks and retaining the clutch members out of engage ment, winding cables connecting the drums with the grooved wheels and designed when wound 'on th drums to rotate the wheels in a clockwise direction and Wind the springs, a pin extending from each of the Wheels and designed in the rotation of the wheels to'engage with and shift the trip device thereby releasing the associated bell crank, an arm extending from each of the wheels, a suitably supported trip mechanism engageable witheach of the arms and designed when engaged to lock the wheels against rotation in a counter-clockwise direction owing to t e action of the springs and controlling arms carried by the top shaft and designed when rotated with the said shaft to engage with the trip mechanisms and unlocr the arms, as and for the purpose specifie 10. In a machine of the. class described the combination with a rotatably mounted hollow shaft, and potentialenergy storing means on said shaft,of apluralityof pivoted controlling arms extending from the shaft at suitable locations throughout the length 11. In a'machine of the class described the combination with a rotatably mounted hollow shaft, and potential energy storing means on said shaft, of a plurality of controlling arms pivotally secured to the shaft and located at suitable positions throughout the length thereof, a plurality of controllinglevers pivotally secured to one end of the shaft and wires connecting the respective controlling levers with the respective arms, said wires passing through the hollow center of the shaft, and trips engaging said potential energy storing means to prevent the rotation thereof, sald controlling arms being adapted to release such trips as and for the purpose specified.

12. The combination with a rotatably mounted hollow shaft and potential energy storing means on said aft, of a plurality of bearing blocks fixed pa the shaft at suitable locations throughout the length thereof, a controlling arm pivotally secured to each bearing block, a plurality of controlling levers pivotally secured to one end of the shaft, wires connecting each lever with a controlling arm and means normally retaining the'controlling arms in a position radiating from the shaft; as and for the purpose specified.

13. The combination with a rotatably mounted hollow shaft and potential energy storing means on said shaft, of a plurality of bearing blocks secured to the shaft at suitable locations throughout the length thereof, a controlling arm pivotally secured to each block and provided with a projectin lip engageable with the block and designe to prevent the controlling arm from being swung outwardly, from the shaft farther than the upright position, a collar permanently secured to one end of the shaft and provided with a plurality of extending lugs, controlling levers pivotally secured to the lugs, wires located within the hollow center of the shaft,'the ends of the wires protruding through the shaft and being secured respectively to the controlling arms and to the levers and spiral springs engaging with the shaft and with the respective controlling arms, the said springs being mounted on the protruding ends of the wires which connect with the arms, and trips engaging said potential energy storing means to prevent the rotation thereof, said controlling arms being adapted to release such trips as and for the purpose specified.

Signed at \Vinnipeg this 10th day of F ebruary, 1913.

JOSEPH YANCEY CLARK.

In the presence of-- Ur. S. RoxBURGn, R. FOSTER.

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