USRE11470E - Electro-automatic - Google Patents

Description

A I 2 Sheets8heej; l. P. D. TAYLOR. APPARATUS FOR STOPPING ENGINES.

No. 11,470. "Reissued Feb. 5, 1895.

I. 1). TAYLOR. APPARATUS FOR STOPPING ENGINES.

' Reissued Feb. 5, 1895.

2 Sheets-Sheet 2.

35 is-provided on one face with a ratchet wheel "afm'ovemnt' lengthwise of the shaft but is held against rotation-thereon. This nut has UNITED STATES;

encounter; D; TAYLOR, OF HARTFO A.P PA-RATUS FoR s PATENT OFFICE.

un couunoriour, YAS sIGNOR' To r'nn'- EImcTno-AUToM o APPLIANCE COMPANY, on CONNECTICUT.

To mc ENGINES.

SPECIFICATION- forming part of Reissued Letters Patent Nan-amass February. 5,- 1 see.

' origlnal li'o. 490,373, dated Jamiary' 24, 18 93. Application for reissue filed January 3, 1 895. Serial No. 533,788-

- To all whom may concern:

. Beit known that I, FREDERICK D. TAYLOR,

of Hartford, Connecticut, haveinvented cer tain new and useful Improvements in Apparatus for Stepping Engines, of which thefollowing is a specification. 4

The. object of myinvention is to provide an apparatusfor closing the throttle valve of a steam engine or other motor,'that may be quickly operated from points at a distance; and a further object is to provide an apparathe that will automatically reset itself.

To this end .my invention consists in the details of the several parts making up the apparatus as a whole and in their combination as more particularly hereinafter described, and pointed out in the claims.

Referringto the drawings: Figure 1 is a plan of the apparatus with the mechanisms .setlin readiness to operate and close a valve on the release 'of the catch, parts in this view being broken 'away to show construction. Fig. 2 is a plan of the apparatus showing'the position of the parts with spring. barrel released from the hold of the'clutch pawl, as after the device has operated to close a valve. Fig. dis a view in cross sectionlof the maintshaft looking toward the spring barrel.

I In the accompanying drawings the letter'a denotes a shaft that is mounted in suitable bearings b b formed in standards 0' that pro the base plate d. vA sprocket wheel e is see red to this shaft, preferably on the outer end, and there is also secured to the shattin'this instance a spring barrel f that f, one member of aclutch device. A coil spring is arranged within the barrel with one end secured to the barrel and the other end secured to an axlef which partly supports .the barrel I This axle is secured to abearing b in any convenient manner. j A portion a of the'shaft preferably that whichis located between the bearings b and fb" is threaded and supportsa. nut g that has is secured to the frame or a part fixed thereto;

. pa j qt lengthwise of andsubstantiall'y parallel to the shaft. The object of this arits position with relationto the shippinglever '11 that has its fulcrum at i on one side of the shaft and extends transversely across the shaft, preferably embracing it, as in the. form illustrated in thedrawings. Between the back of the lever e and the bearing 1) there is pref erably arranged an elastic buffer j, the nut side of the lever from the buffer.

When the spring in the spring barrel is relaxed, by lifting the guide'h out of'its 'notch in the nut g, the nut may be turned until it presses the lever against the elastic bufier to the .desired degree. a When the proper position is reached the guide is secured in place and this'so retains the nut that it will be returned each time 'to the same posit-ionon the threaded portion of the shaft by anydegree of rotation of the latter under the impulse of the spring. p

A spring'pawl It forms the other member of the clutch mechanism in the't'orrn of apparatus shown and its beveled end 79' operates in connection with the ratchet wheel f to hold the spring barrel in the desired position.

pawl to a point where it engages a cam slot 1' in the tumbler Z. to a fixed part of the frame, as to a post Z and has an arm Z adapted to engage a'catch borne tro magnet m.

The spring actuated shaft a is connected with the spindle 'n' of a'throttle valve n by means of a chain passing over the sprocket wheel e on the shaft or and a sprocket wheel ms is to be used in connection with a steam engine or the like motor in which a 'valve or or other fluid actuating the motor. When a anism is .opened the shaftais turned in'such barrel, and the rotary movement of the shaft on the outer-face ofthe armature of'an elec- 1 gate is used to'control the flow of the steam a'cauaesthenut. g to move alongthe threaded portion of the shaft so-the edge g of the nut rangement of the guide 71 and thenotched nut is to enable the inner position ofthe nut to be determined. By inner position is meant being located upon the shaft on the opposite I The shipping lever projects beyond the spring This tumbler is pivoted e on the valve spindle u, when the appara throttle valve so connected to the stop mechmanner as to wind up thespring in the spring I 100' theslide and move by sliding it draws the'pin ment with the lockin pawl and this releases beveled end is pushed byits spring into en-r I gagement with the teeth The trip device co out of engage- 70? of the spring the. pawl so that its g notch of the ratchet wheel.

m'piises a slide 0' bearing on a stud on 'its end next to the nuta spring retained block with a beveled end,

mounted so as to oscillate freely when pushed .in one, direction but gaged in the opposite not oscillate when endiregtiom" This block is in the path of movement'of the edge of the nut and yields to. allow the nut'to move freely toward the shipping when engaged in t lever but does not yield he opposite direction so.

that the nut operates in its movement to push ment with the lockin On the shank der k is formed in pc the pin 0 out of engageg notch W.

of the spring pawl lo a shoulsition to be encountered by the shipping lever when the latter is thrown outward by the sprin .in'the pawl shank.

When the apparatus is set in position to operate to shut down the motor throttle valve the parts are in the of the drawings, andcaused to operate by electric circuit that net m, as by. pushin switch. By causing toward the magnet position shown i n' Fig. 1

the apparatus can be malling or breaking an includes the electro-magg a'button or moving a the armature to be drawn the end of the tumbler is released so'that itturns'freely on thypivot, allowing the shipping leverwi to be thrown over underthe imp ulse of "I118 encounter the shoulder 10 ring 1? and s as to withdraw the pawlfrom engagement with the ratchet wheel. This allows the springto recoil, the

pawl being held in of the 'engagemen of the trip device its outer position by means t of the pin etch the slide with the lockingnotch k he recoil of the spring turns the spindle oflthe throttle valve in such .j'mann'e'r as to shut 01f the vflowpof the fluid used to drive the motor.

' Bythe rotation of the shaft a the nut is causedto move toward and against the shipping lever which it' p buffer, the outer end ushes back against the of the shipping lever, by

' end of a push button or red convenient position to enable can be controlled means of a 'pin engaging the cam slot 1', throwing thetumbler into engagement with the catch on the armature and th us resetting ,the releasing mechanism. The parts will then be inthe position as the drawings. As so illustrated in Fig.2 of on as the throttle valve is opened, as by turning the valve spindle by means of the handle in the ordinary manner,

the spring is again w forced out by the mo to releasethe spring gage theteeth of the ,the deviice is reset so is again, released the crate to 'close v the th gard to the extent been opened. 3

ound up and the slide .Vement.0f the nut so-as pawl and allow it, to enratchet wheel. By this that when theitnmbler apparatus will again 0prottle valve without reagainst rotation thereon,

armatureof an electro of movement of the 'shippingl'eve'r,

to which the latter has There is provided in this apparatus as shown means for releasing the spring barrelmechanically by simply pressing, upon the exposed pthat is mounted 7o in a suitable support p with its inner end engaging the spring pawl in such manner as to cause the latter to be moved away from the ratchet wheel when the push'rod is thrust inward.

The form of clutch mechanism shown is the one preferred, but it is .obvious that other forms for temporarily holding the shaft in position with theco'il-spring wound up and under tension may be employed without exer- 8o cising invention, and the use of such other forms of clutch devices with the combination comes within the scope of my invention.

This stop apparatus is preferably inclosed in a suitable case or box and secured in a the connection between the apparatus and the throttle valve to be easily made.

The elastic bulfer is preferably made of india rubber or the like gum and it may be 0 secured to a fixed part of the frame, as the side of the standard 0, or it may be borne on the side of the shipping lever i, and its function is-to receive and afford a yielding stop-for the shipping lever when it is pushed 5 by the nut that travels along as the shaft rotates. This butter breaks the shockof the recoil of the spring by acting as a brake to graduallystop the revolution of .the shaft by retarding the movementof the shipping lever rec. when pushed by the nut moved by the rotation of the shaft.

The circuit wires are connected with the a electro-magnet in any common manner and provided with a common battery. These [05 wires may be led to any desired localities in amill, factory or other plant, and they are provided with-push buttons or switches at suitable points by means of which the circuit to operate the apparatus no to close the valve and stop the engine when anything goes wrong.

I claim as my inveution- 1. In an apparatus for stopping a steam engine or other motor, in combination, a spring 1 15 actu'ated'shaft having a threaded portion, a clutch part connected with said shaft,

1 hating spring having one end connected with the shaft and the other endwith a fixed part of the frame, a. nut movable back and forth on the threaded portion of the shaft butheld a spring actuated shipping lever extending across the-shaft with its outer end connecting with a tumbler, the tumbler-with its arm adapted to engage the 12 5 magnet, the springlocatedin the path and the trip device withone end adapted to engage the spring pawl and. the other located in the :30 pathof movement of the nut,.all snbstans tially as described. 1 v

pawl having ashould'er 12, In an apparatus for stopping an engine orfothe'r motor, in combination, a spring actuate'd' sh'aft having a threaded portion, a clutch device having one part connected with 5 said shaft and the fother part mounted in operative relation thereto, the shipping lever extending across the shaft between an elastic buffer and a nut, the nut movable back and forth on the threaded portionof theshaft but held against rotation thereon, and an electro magnet having'its armature adapted 1 to'engage the tumblerof the releasing and resetting mechanism, all substantially as de- -,2 tending across the shaft and having its outer end epgaging a cam slot in a tumbler, abuffer loca tecl backpf the shipping lever, the tumblerhaving'a cam slot engaged by a projectionon'theshipping lever and an arm engagedby a catch onthe armature of an elec i tro liet,the 'armatur'e having a catch, a clutch part "mounted so as to be operated by. the'shipping lever, the trip device with means for holdingthe clutch parts disengaged, and

3 5 the movable'nut having a flange adapted to operate the trip device in its movement on the shaft, all substantially as described.

4." In an apparatus for stopping a'steam englue or oth'ermotorfin combihation, the spring 0 actuated 'shaft having a threaded portion, the

clutch part connected with, one end of the shaft, a sprocket 'wheel secured to the other endof the shaft, an actuating spring connected with the shaft and with a fixed part of;

4 5 the iframe andnmechanism substantially as describedfor releasin'gihe clutch and automatically setting the releasing mechanism,

all substantially as described..

' -5. In combination in an apparatus for stopping a steam engine or other motor, a spring actuated shaft having a threaded portion, the shaft actuating spring, the clutch parts con-- nected with the shaft :and with the frame respectively, and the releasing and resetting mechanisms comprising a notched nut borne on the threaded portion of the shaft and held against rotation thereon, all substantially as v described.

6. In comhinationin an apparatus for stopr 1 6o ping a steam engine or other motor, a spring actuated shaft havin g a threaded portion, the shaft actuating spring, the clutch parts.con-' nected with the shaft and with the frame respectively,the releasing and resetting mech-' anisms comprising a flanged nut borneon the threaded portion of the shaft and held against rotation thereon, the flange of the 'nut having a series of locking notches, all substantially as described,

' 7; In combination inan apparatus for stopping-a steam engine or other motor, a spring actuated shaft, the clutch parts connected with the shaft and with the frame respectcomprising with the other elements a tumbler and a swinging shipping lever in operative engagement with each other, all substantially as described." 1

8. In combination in an apparatus for stopping a steam engine or other motor, a spring actuated shaft-having a threaded portion the ively, the releasing and resetting mechanisms clutch parts connected with the shaft and with the frame respectively, the releasing mechanisms. substantially as described, and

' the resetting mechanisms" comprising a nut movable back and forth on the threaded portion of the shaft and held against rotation thereon; all substantially as described.

' ."FREDERIOK D. TAYLOR. Witnesses: s H. R. W LLIAMS,

- O. B; PURINTON.

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