US469669A - Apparatus for stopping engines - Google Patents

Description

N0 Model.) 2 Sheets---Sheet 1 J. P. TI'RRELL.

APPARATUS FOR STOPPING ENGINES.

Na-469,669. Patented Febu'Z'S. 1892.

\A/i]; 52555 5 DIP/5111152. W, 6465 67 1 Q s 4 I (No Model.) 2 Sheets-Sheet 2 J. P. TIRRELL.

APPARATUS FOR STOPPING ENGINES.

N6. 466,666. P6666666. P66. 26,1692.

\Mih E5555,-

5mm; i OF BOSTON, ASSIGNOR To WASi-HNGTON ii. 'KILBGURN,

' OFGREE mew, MAseAoiiUsETTe.

SFEGEFIQATZQN fomniiig part of Leters Potent 330, $269,569, dafcec'i February 23, 1895? Application riled October 24 1891,

erm 1%. 409,556. (1% model.)

2's a-ZZ who-i1 2, z iii/my con/corny Be it known that I, JACOB i. TIRRELL, oi Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Apparatus EMS-topping Engines and other Motors, of which the foiiowingicQSpecification.

This inveni'ion reiz'i-Ees to on appamjius oi meaiis whereby the operation of simmerigine or oi'nei' motor sueh an; zi'wat-er-wiieei, dineine be quickly-flopped from various parts Gk building or esiiiiiiishment in whioh it is located.

My invention has for its chief object to provide an e1ectricaliy eontroiied mechanism of such construct-ion that 11 p011 the-ciosiii'e (or breaking} of an electric circuit said n1eoiia.uism wiii he auiomotioaiiy engaged wiih V a moving part of ihe engine so as to receive power therefrom and wiii first transmit the power received to the throttie-vaive, thereby closing iiie same and stopping the engine, anti wiii then be aoioma-tieziiiy reset; for on other operation L i iiecomieeied from the engine, leaving the ilii'otitie-va-ive free to be opened by the engineer when it is iies'iii'e i 1 again ciao; the i'iiG. These resoiis i zitmin the improved mechanism which i will now proceed to describe and claim.

the accompanying drawings, forming a "Taft oi. this s; -cificaiion, Figure 1 represents Ni 2i iiu'oHi-e eievation the atom of .zs'iiii cont-rolling meciiii my invention, siiici in H1? be *1. its

iiso'i inoperative position i oios I, k :1 rep? ion on one i oi 2, icoici zm eieci'i'io eii'ciiii'g, z and made opera ogrezetioii may 'iiiyciosed i .as Water-wheels, wiudmiiis L se-the 21d213iation of my improvements fie such motors rcquii'ing oniy the exercise of ordinary mechanicai skill and juiigment.

b IOQYGSQIHLS a sailor; shaft journal-ice in. time bearings c c, which are here shown as sup" ported by a fixed bracket or frame d.

Y) represents another shortei'iaft, journaiefi. in fixed bearings c, the Saki siiafin Zfoeing" arranged in line with the shaft 1.

Ai'fixeci to one end of the shafibie a giniiey e, which 15 rotated by a. belt cozmect-ing'it with a pulley diiven by the engine or motor, s a'i-ii pulley rotating the shaft 1). Saifl shaftb has also affixed. ioii at its oi-iiefeufi 2i 111 icy f, fori'ning one part of a frici'iowointcil device hereinafter described. To the chiiftb are affixed R. SpFOCiiQiFWilQQi? andiiiek h the Two being zi'fii to the came hob FJI II represent two oi frictimi-piiiieyf on the shaft 3), saidbmds ieiisg attached to the disk 71 on the shaft 1 ti: i i

v n a suitable mam-191', hereinafter desceioede Enid band '1 ha a co ting Gui;-

: L of one from and c 1: the adjoin iim'i; the puiieyf win 1' withoutimitating the ia'tiei the c1511 which they are connected.

j 3' represent levers, whiciizire pivoied 5 to owe on the disk 72 The silo-fie: said levers are biimeateil and oars on the outer skies of two adjoining cars '21 the bamis i, the bifurcated em 5 bein joiiieci by (Lil adjustingecrcwj i of said. we. The screw j is ac aaijost iiie bii'areeted. ends of is as so for wear of the ciuicii. Levic-ee e iii 'oii'oo i sofiieie 33135, toil-Howe farther- "wcei'i to.

xiii-bands scrrom'iding Lil lug: the cars i occupies when the band nearer together by said screw j thus bringnearer together and tighten i ng thecliitclrbands. It will be seen that the lovers; support the bands 2 i and form a connection between them and the disk 72.

l:- reprcseuts a collar slidingon the shaft 1), with which the longer arms of the leversjj are connected in any suitable manner, preferably by means of short links forming a toggle-joint, as shown.

The outer surfaces of the ears 5 are i nclined, said ears being, thinner at the outer end than at the base, so thatthe collar 1.: he mpved away from the disk 72, or to the left, as viewed in Fig. 1, the levers j will be moved so as to press inwardly upon the outer wedgeshaped surfaces of said cars, thus causing the bands '1' to tighten upon the pulleyf so that said bands and the dish 71, and sprocket-wheel 9 connected therewith, and the shaft I), to which said parts are afiixed, will all be rotated w th said pullcyf and the shaft b, to which it is affixed.

I Figure 1 shows the devicein the position it s '2' are loose upon the pulley f, so that the shaft Z) is not rotated, while Fig. 2 shows the position when said bands are tightened upon said pulley, thus causing the shaft 6 to rotate with the shaft Z).

The sprocket-wheel g is connected by a fiPI'OC-kGlI-Oi'lfilil g with a sprocket-wheel a on the valve-stem (i.

a m represents an arm or lever pivoted to the supporting-frame d, and engaged with the collar I: on the shaft Z) by means of a pin aiiixed .to' said lever, runningin a groove in said collar.

'22- represcnts an arm or lever, also pivoted to the supporting-frame. The levers m and n are connected with each other by means of a link m, which is pivoted on the lover or, and which has a slot which receives a pin a, projecting from the lever 91.. The lever his normally pressed away from the lever m or towardthe left, as viewed in Fig; '1, by a spring 0; as shown. Said lover a is provided with a pin it at its lower end, which moves in a slot 11' in the upper end of a lever 11, which is pivoted at p to the supportingframe. The lower arm of the level-J) is engaged, when the device is set or ready for use, with a detent g on the armature got an electro-magnet. The form of the slot 1) in the lever 19 is such that when the device is set, as shown in Fig. 1, the lGVQlV'llE-l held against the pressure of its spring 0 and cannot move from said position.

In the form of the device shown in the drawings the electric circuits in which the electromagnets r 1' are included is normally broken and may be closed by a push-button at any! desired point or points or by any other suitable device. When the said circuit is closed, the magnets r r are energized and the armature q is drawn' downwardly, thus releasing the levcrp. It ist-o be here noted that the form of the lever 17 is such that when the do vice is set the pin a of the levcrn bears on said lever 1 at a point close to the plVOtPOIII'E thereof, so that the lateral pressure exerted .by the springpressed lever n on the longer eud of said lever p and the detent q on the armature q is butslight, and as aconsequence a slight force is sufficient to draw said armature downwardly and release said lever, as above stated. This enables a great saving to be made in battery-power, and it has been found in practice thatfour ordinary cells are ample to energize the magnets r '/'to a degree sutiicient to draw down the armature and release thclever. After the lever 72 is released by the detent q, as above stated, the spring 0 forces the lover a to the position shown in Fig. 2, said lover a pulling the lever m over I to the position shown in said figure, and thus moving the collar 7.: on the shaft 1), so as to cause the clutclrbands ito tighten on the pullcy f, and thus cause the shaft h and the sprocket-wheel g to rotate with the shaft 1). The lever m is engaged by a spring-catch or deteut .s" when pulled over by the lever 12, as shown in Fig. 2. While in this position the power of the engine rotates the sprocketwheel L and through the chain g," and sprockcowhcel (1' also rotates the stem a of the throttle-valve.

To mevent the positive rotation of the sprocket-wheel g'aftcr the valve is closed and to reset the mechanism above described, I provide the following automatic devices.

The end portionof the shaft Z1 farthest from the clutch devices is screw-threaded, and a not If is placed on said scrmv-threaded portion. The nut b is preven ed from rotating with said shaft by means of an ear or lug 7)", (shown in dotted lines in Fig. 3,) said lug projecting from said nut and haviugan opening which receives a pin or guide I), affixed to the supporting-frame and arranged parallel with the shaft 7), said ear sliding on said pin or guide. The not b is formed to engage the lever "/2. and is adapted, when moved to the end of the screw-threaded portion o the shaft 1) nearestsaid lever '12, to move the same against the stress of its spring 0 back to its set position, as shown in Fig. 1.

The operation of those devices as fol lows: As soon asthc magnets 'r r have been oncrgized and the lever 1'1 1'lG2lS9(l,i3ll(-3 lever n and lover m willassumethepositiousshown in Fig. 5., thus operating the clutch and causing the shaft 1') to rotate with the shaft 11, as above described. \Vhcnevcr the shaft 3) begins to rotate the nut I is moved by the screw-thread on said shaft toward the lever 71,. or to the right, as viewed in Fig. 2. The said nut 0-, as it moves along, presses thelevern back to ward its set position, or the position shown in Fig. l, the said not being so adj ustcd on the shaft 1) that the number of revolutions ofsaid ICC shaft required to shut the throttle-valve will bring the said nut b to the 0nd of its inward movement, by whichitime said nut has oomplctcdits work of resetting the device. As

1 some The lever n ES, lioweveighelii against-pressure in iliis (li- 2 oiion by its springcsich The lever n, as it pressed cook by the nut 7: also moves ihe lever p heel-c to its set position, the eurl of he love? j) rising; over the LlGlGl; l1 gfl'ihe rear side of which is beveled for this purpose The lever n is provioeil' with a, suitable proj eoiion, us n which is adspied to press'clown the catch sand release the lever m, the latter oeing immediately forced heel: to its sci; position by the pressure of the spring m The projec. tion 72 and the incline on the ceioh s, with which it cooperates, are so placed that said catch is clispleee l-aml will release the lever m immediately after the lever 12 has reached its set position and has again become engaged with the detent q, as shown in Fig.1. When the lever is released and moved back to its set position, the clutch device is mode inc?- erstive and the shaft b ceases to rot-ale with the shaft 7), The not 6 remains in the posiiion shown in full lines in Fig". 1 until it is moved back to the position shown in dotted lines in said. figure bythe roi'ationof the shaft 1) in the opposite direction by the openingof ihe throttlewelve by no engineer o'rothcr air tends-n1, the movement of the valve-stem lie-f communicates; io the shaft 5 by the sprocket-wheel a, chain 9, soil spro'okeii wheel 9. v

. I prefer to provide the supporting-bracket d was; slots d d, through which the screws 1 (1 which secure the said bracket toasuit able support "Jess, the object of said slots being to enable the bracket (Z to be moveil up or down to compensate -for variations in the length'of the sprocket-chain g caused by wear or otherwise. I have also provided a suitable bolt (not shown) passing throi'igh the oven hanging top 01 0f the oraeketd unfiengaging a suitable nut fixed in a suitable s'u pport above soicl bracket for siljusting the letter;

it will. be seen that the essential features or groups of elements of the apparatus are as follows: first, a connection between the throte ileq elve and a moving part of em engine, this connection being in the present case the sprocket chain and wheels, the pulley e, and the belt that connects said pulley with a shaft forming-a part of or driven by the engine or n'i-otoiz Said connection must he separable or of such nature that eeu' he made ulierneitely operative and inoperative, so that-when open olive it enables the momentum of the engine to close the throttle and when inoperative she ogze'miion of the engine has no effecfi on the throttle, this result beingacoomplished by the ijwo cloioii members, one of which is independently newbie; secondly, means whereby. ihfi visions ofiseid' connections maybe consome on made opcraiive to stop inc engine by ilhe set of en ooeretor or attend t.-

point. Snitshle means for .so are here n loony" Q5 move i141 the devicesior one r ng p rcssure on levers, and, secondly, lilo elcei-rically-eoned select-adopted to @reveni; the engage inentoiiclutch niunerswheni-he in operation, exeepling when it is ciosirecl .conrlition to be operated by an eiieni'loni, e:

in distant poini. I believe that these features or groups of eleinen ts have never before been combined in an organized apparatus. Hence I do not limit myself to the particular devices composing the several features or groups here in shown and described, and may variously modify the organization aud'deiails of each fee/cure or group without departing from the spirit of the invention. it will he understood that my use of the term tl1rottie-vzil\'e.is

generic and is intended io cover any oevioe that controls the admission of the motive power to an engine or otherjmotor.

l clnixna y Y 1. In an apparatus for stopping on engine or other motor, a power-eontrollinq device,

such as throitle velve, a, con neoizion between the same anclthe engine or meteor, through which the -power-eontrolling device may he operaiecl by the rnoinenizunz of the engine to shni, off the source of power, said connection being composed of two normally separated and inoperative peris, and an elcciricslly conirolled coupling device, whereby said. ports maybe operoiiively connoctocl to stop the en gine.

2. in an nppersins for siopping an engine or other motor, a. power-controlling ciev. i, such as e throttleahoe coinpounl lever adepteh'when released, to connect a normalin an apnsraius for stoppltig on.

l'iO

oiio'ther' motor, apowencontrolling cle'vi oe,

such: as a throttle-valve, a shaft h, rota teclliy the engine, e'noiher shaft f in line Wiih iifilil shalt Z2 noe having clinch devices, which, Whenooerzitive', cause the shaft 1) to rotate with the shaft 7), oonnecnons between said snai s o and. the powebcoutrolling ilevice, wherehyihe letter is {sensed to shut off the power when 'ihe former is rotated by ishesheie 4 senses I and electrically-controlled mechanical devices, whereby said cl ntch mechanism is made operative, as set forth.

4. In. an apparatus for or other motor, a powersuch as a throttle-valve, a shaft h, rotated by the engine, another shaft 5 in line with said shaft 11 and having clutch devices, which, when operative, cause the shaft 1) to rotate with the shaft 12, connections between said shaft 1) and the power-controllin :i device, whereby the latter is caused to shut oil the power when the former is rotated by the shaft ,0, electrically-controlled mechanical devices, whereby said clutch mechanism is made operative, and means whereby said mechanical devices are reset for another engine-stopping operation by the same rotations of the shaft 1 that cause the shutting of the power-coir trolling device, asset forth.

5. In an apparatus for stopping an engine or other motor, a power-controlling device, such as a throttle-valve, a shaft Z), rotatedby the engine, a pulleyf, afiixed to said shaft, another shaft (1' in line with the shaft Z), connections between said shaft b and the throttlevalvc, whereby the rotationoi the former will close the valve, a clutch device on said shaft .i,adaptcd, "when operative/to acton the pulley f and cause the shaft 1) to rotate with the shaft 7), the spring-actuated lever n, normally adapted to render said clutch mechanism on erative, the slotted lever p, engaged with the lever n, the armature q, having a detent which engages the lever 19, and thus holds the lever n in its inoperative position, and an electromagnet, which, when. energized, will attract the armature q and cause the release of the lovers p and n, and thus permit the latter to move to its clutch-operating position, as set forth.

6. In an apparatus for stopping an engine or other motor, a power-controlling device, such as a throttle-valve, a shaft I), rotated by the engine, a pulley f, afiixed to said shaft, another shaft 7) in line with said shaft b,eonnections between said shaft Z) and the powercontrolling device, whereby the rotation of the said shaft will cause the said device to sh nt oil, the power of the motor, a clutch device on stopping an engine controlling device,

said shaft 2'), adapted, when operative, to act-- on the pulley f and cause. the shaft Z) to retate with the shaft 1), the spring-actuated lever n, normally adapted, through suitable connections, to render said clutch device openitive, thoslotted level-p, engaged with the lever 72, the armature q, having a detent which engages the lever 19, and thus holds the lever 02- in its inoperative position, an olectro-nlagnot, which, when energized, will attract the armature q and cause the release of the le vcrs 1) and n, and thus permit the latter to move to its cl ntclrmierating position, a locking device adapted to retain the clutch mechanism in operative position until the power has been shut oil by the poo'er-controllingrte- ,vice, and automatic 1' paratns for another engine-stoppingoperainc operated and to release the clutch mech anism whenever the power is shut off and the apparatus reset, as set forth.

7. In an apparatus for stopping an engine or other motor, power-controlling device, such as a throttle-valve, a shaft l), rotated by the engine, a pulley f, affixed to said shaft, another shaft 7) in line With the shaft L, connections between the shaft 1) and the throttle-valve, whereby the rotation of the shaft will closethe valve, a clutch device on said shaft h',adapted, when operative, to act on the pnlleyf and cause the shaft 11" to rotate ,with the shaft 1), the lever 'H'l, connected with said clutch device, the spring-pressed lever n, connected with the lever in and adapted to move the latter so to render the clutch op era! ive, the connections between the levers m the former, the slotted lcve'rp, with which the detent, which engages the lever 12, and thus holds the lever n in its inoperative position, an electro-inagnet, which,when energized, will attract the armature q and cause the release of if e lovers 1.) and wand th us permit said lever it to act and move the lever in to its clutclr operatin position, a catch to lock said lever m in said clutch-operating position, a device operated by the rotation of the shaft I) toreturn the lever n to its inoperative position and to re-engage the lever 27 with the detent on the armature and. devices to disengage the lever m from itseatcli whenever the lever p is engaged with the detont and return said lever "in to its inoperative position, thus releasing the clutch, as set forth.

S. In an apparatus for stopping engines, the combination, with a sl aft which is adapted to be rotated by the engine, and the throttlevalve of the engine, of a sprocket-wheel on said shaft, another sprocket-wheel on the stem of said valve, and a s1n'ocket-chain running on said sprocket-whecls and forming a coin nection between the said shaft and valvestem, whereby the latter is rotated by the rotation of the former, as set forth.

In testimony whereof I have signed Ill) name to this specification, in the presence of two subscribingwitnesses, this 29th day of September, A. l). 1801.

, JACOB l. 'JIRRELL. liitncsses:

(I. F. BROWN,

EWING W. lIAnLnN.

lovices to reset the an lion while the powencontroili11gdevice be" and n being such that the latter can approach lever n is engaged, the armature (1, having; a

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