US872990A - Control apparatus. - Google Patents

Description

No. 872,990. PATENTED DEC. 3. 1907.

A. T. OROGKER. CONTROL APPARATUS.

- APPLICATION FILED IAB. 21, 1907.

2 SHEETS-SHEET 1 Witnesses-- mveniar 37M Arthur .7 02x14; M; W b,

PATENTED DEC. 3, 1907.

A. T. OROGKER.

CONTROL APPARATUS.

APPLIOA'HOI FILED XAB. 21, 1907.

2 SHEETS-SHEET 2.

INYE'NTUH ARTHUR 2? CHUEKEH A BY UNITED STATES ARTHUR T. CROCKEB,

PATENT OFFICE.

OF SCHENECTADY, NEW YORK, ASSIGNOR TO GENERAL ELECTRIC COMPANY, A CORPORATION OF N EW YORK. U

CONTROL APPARATUS.

R... 872,990. Specification of Letters Patent. Patented Dec. 3, 1907.

Original application filed January 9- 1906. Serial N0. 240.148. Divided and this application filed larch 21, 1907. Serial No. 363,565

To all whom it may concern:

Be it known that I, ARTHUR T. OnocKEB, a citizen of the United States, residing at Schenectady, county of Schenectady, State of New York, have invented certain new and useful Im rovements in Control Apparatus, of which t e following is a specification.

This application is a divi ion of m nding application Serial No. 240,143, fifedflan. 9, 1905, for improvements in control apparatus, in which the present invention is fully describedand illustrated. I My invention relates to control apparatus for electric motors and-particularly to the type of control apparatus set forth for jexample in the atent to Frank E. Case, No. 801,214, date Oct. 10, 1905, for system f motor control. P

One of the objects of the present invention is to provide an improved mechanism for operating the emergency air-brake valve and, the emergency circuit-breaker when the controllcr handleis released by the motorman.

Other objects of my invention will appear from the following description which, when taken in connection with the drawings, dis closes one embodiment of my invention.

In the accompanying drawings in which the same parts are referred to by the same reference characters throughout all fife figures, Figure 1 is a side elevation partly 111 section with a portion of the casing removed of a portion of a controller constructed in accordance with my invention; Fig. 2 is a detail of the u per portion of the controller parts of whic are removed in order to show the mechanism directly ,fssociated with the emergency air-brake valve; Fig. 3 is a section taken a roxirnately'on the line 3-3 of Fig. 1; and 4 is an elevation on the line 4-4 of Fig. looking in the direction of the arrows. e

A represents a rtion of the controller casing within whic are supported the controller parts. B isthe controller 0 linder. O indicates the reversing switch an D the controller handle. These parts ma be'of any usual or desired construction. he controller handle D is connected to and 'ilirectl 0 crates the shaft 1 which extends throng t e top of the controller casin and is suprted at its lower end within t I e boss 2 adacent the u per end of the controller cylindot.-

This s aft '1, through certain flexible connections and gears, is connected to the controller cylinder B and by the rotation of this shaft 1 the desired rotation of the cylinderB is effected. The construction and operation of the parts intermediate the shaft] and the cylinder B are fully set forth in my co-pending a plication Serial No. 240,143 heretofore re erred to and as these devices form no part of the present invention, the descri tion 6f them will not be repeated.

e emergency air-brake apparatus and the emergency circuit-breaker in the controlv ler illustrated are located near the top of the casing. The usual emergency valve shown at E has pro'ecting from its casing the valve stem 5. A dog 6 is ivotally secured at 7 to a bracket 8 attache to the back of the controller casing. The valve stem 5 lies directly within the plane of movement of the dog Q and is adapted to be engaged by it. When the r'everser is in its off position the dog 6 is prevented from forcing the valve stem 5 vided at one end with a notch 10, one we 1 of which enga es withthe u per end of the dog 6. The r0 9 is oonnecte at its other end to (me arm of a bell-crank lever 11 mounted on a stud 12. The other arm of this bell-crank lever is connected by a link 13 with the collar 14 secured to the reverser shaft 15. the reverser shaft is moved in either direction in order to give forward or reverse motor connections, the bell-crank lever 11 is the right, thereby releasing the dog 6 from engagement with the wall of the groove or notch l0. A bar or shoe 18 is slidingly mounted adjacent the dog 6 and is provided with a lug 19 which engages with a shoulder 20 on the dog 6 when the shoe 18 is moved upwardly, thereby causing the dog 6 to force the valve stem 5 inwardly and causing the brake to be applied. A convenient way for mounti the shoe 18 consists in v assing rivets or olts 21 through slots 22 in t e shoe 18, the rivets or bolts 21- being secured in the bracket 8. The shoe 18 is actuated by sliding cam23keyed to the shaft 1. Thls cam has a flange 24 which in all angular positions of the shaft 1 is beneath the. projecting shoulder 26 of the shoe 18. The cam 23 is normally held in its raised position by means of a spring 27 which engages at its upper end with the cam 23 and at its lower end with a collar 28 secured to the shaft 1. hen the motorinan places his hand on the controller oscillated in a direction to move the rod 9 to inwardly by means of the rod 9 which is ro- When , 23 brings the cam flange 24 into alinement" handle he de resses the button and thereby through t e pin 31 and the levers 32' and 33 depresses the sliding key 34 which bears at its ower end upon the cam 23, thus ressing this cam downward against the action of the spring 27. This movement of the cam with a roller 36 carried upon the end 'of the arm 37 of the emergency circuit breaker which is mounted for rotation on a short shaft 38. This circuit-breaker may be of any known or approved form and as shown comprises two contact fingers 39 which engage with the fixed contacts 40. When the handle of the controller is turned, the camflange 24 engages with the roller 36, thereby rotating the circuit-breaker and bringing the contact fingers 39 into engagement with the fixed contacts 40. Know, while the controller handle is in 'one of its running positions, the button 30 is released, the cam 23 being moved downwardl to release the brakes until the control er turned to the off position when, as shown in Fig. 3, the end of the cam'flange 24 just clears the roller 36. ,If, therefore, while the reverser is in one of its running positions and the controller handle is in a running position, the button 30' is released, the circuit. is opened and the brakes are at once applied and the'controllercircuit cannot be restored or the brakes released until the controller handle is returned to its off position. In the 05 position of the controller handle when the reverser is in one of its running positions the brakes may be releasedand applied at will by de ressl or releasi the button 30.

Altl iough fhave descr ibed the present in- -vention as embodied in a certain form of con-' troller, I wish it distinctly understood that I do not desire to limit my invention to any particular form of controller as it is obvious that it may be applied to many types.

What I claim'as new and-desire to secure by Letters Patent of the United States, is, L In a controller, an emergency air-brake valve, a circuit-breaker, a controller shaft and a cam slidingly mounted thereon, mechamsm associated with the controller handle moving said cam intooperative relation fo 'to the circuit-breaker, and means operative upon release of the controller handle to-move said cam out of operative engagement with shaft operativel trolling said member, means for moving ration brings the roller 36 beneath the cam flange 24 thereby preventing the cam from handle is re-" breaker,

the circuit-breaker and into operative en- 'gagement with said emergency valve.

2. In combination, a controlling handle, a connected to said handle, a brake-control ing device, a member slidably mounted on said shaft and arra d'to cooperate with, said brake-controlling evice to cause application of the brakes, means ineluding mechanism associated with the said handle for controlling said member, means for moving it into its brake-applying osition upon release of the said han le, an means operative to automatically lock said memher in said brake-applying position.

3. In combination, a controller'shaft and handle, a brake-controlling device, a member slidably mounted on thecontroller shaft and arranged to cooperate with said brakec'ontrolling device to cause the application of the brakes, means including mechanism associated with the controller handle for conit into its brake-applyi position upon release of the controller han le, and means operative to automatically lock said member in its brake-afpplying position in, the running positions 0 the controller. a

4. In combination, a controller shaftand handle, a brake-controlling device, a member slidably mounted on the controller shaft and arranged to cooperate with saidbrakecontrolling, evice tocause the application of the bi-aka'means inclliding mechanism associated withjgthe contr ller handlefor controlli said membenme nsfor moving it into its bra -appl controller l? "ng sition upon release of the and e, means operatlve to automatically lock. said member in its brake----' a l ition, a reversi switch, and niia n d o ti' olled by the rd v ersing switch for llocking said member out of its brakea sition.,

I II CgIblDGtiOH, a controller shaft and handle, a brake controlling device, a circuit a cam slidably mounted upon the controller shaft, mechanism associated with the controller handle for moving said cam into operative relation to the circuit-breaker so that the cam closes the. circuit-breaker when 'thehandle is rotated, and means operative upon release of the controller handle to move said cam out of operative relation to the circuit-breaker and into brakeapplying relation to the brake-controllingdevice ,the parts being constructed and arranged so that the circuit-breaker is adapted to lock the cam in its brak tion if the controller handle n a running sition.

' 6. In comb igation, a controller shaft and handle, a brake-controlling device, ,aicircuit- 1 sl da y m i h d dn e troller shaft, 'r'riechanism associated with the is re eased while controller handle for moving-said cam into operative relation to the circuit-breaker so -applying posithat the cam closes the circuitsbreaker' when the handle is rotated, means operative upon release of the controller handle to move said cam out of Operative relation to the circuitbreaker and into brake-applying relation to said brake-controlli device, and means for opening said. circuit-breaker and locking said cam in its brake-applying position when the cam is moved out of operative relation to the circuit-breaker.

handle, a brake-controlling device, a circuitbreaker, a cam slidably mounted on the con troller shaft, mechanism associated with the controller handle for moving said cam into operative relation to the circuit-breaker so that the cam closes the circuit breaker when the handle is rotated, means operative upon release ofthe controller handle to move said cam out of operative relation to the circuitbreaker and into brake-applying relation to the brake-controlling device, means for opening said circuit-breaker when the cam is moved out of operative relation thereto, and a projection on said circuit-breaker adapted to engage with said cam tolock it in its brake-applying position if the controller handle is released while in a running position. l

i 8. The shaftof a controller, a carn operatively connected thereto, a circuit breaker,- a

controlling means therefor o erated from said cam, and an operating evice having two motions, one motion adapted to rotate the controller cylinder, the other inotio'n adapted to actuate said dam to place it into" position to control the circuit breake 9. The shaft of a controller, a cam operatively connected thereto, a circuit breaker, a controllingrneans therefor operated from said cam, an operating device having twom'otions,

one motion ada ted to rotate the controller cylinder, the ot er motion adapted to actuate said cam to place it into position to control the circuit breaker, and means to prevent such shifting except from normal position.

10. The shaft ofa controller, a cam o ratively connected thereto, a circuit brea "er, a controlling means therefor operated from said cam and an operating device having two motions, one motion adapted to rotate 7. In combination, a controller shaft and the controller cylinder, the other motion adanted to actuate said cam to place it into position to controlthe circuit breaker, in

combination with means to automatically break said'circuit upon release of controller handle.

' 11. The shaft of a controller, a cam operatively connected thereto, a circuit breaker, a controlling means therefor operatedfrom said cam, and an operating device having two motions, one motion adapted to rotate the controller cylinder, the other motion adapted to actuate said .cam to place it into position to control the circuit breaker, in combination with means to prevent such shifting except from normal osition and means to automatically brea said circuit upon release of controller-handle.

, 12; Adevice of the kind specified, compris ing a rotating controller arm, an operating handle carried thereby, a controller shaft, ,a notched cam slidable thereon, a circuit breaker, and an operating arm' thergf or controlled by said cam when said opera ng handle is actuated.

- In witness whereof, I have hereunto set my hand this 20th day of March, 1907;

ARTHUR T. OROCKER. Witnesses:

BENJAMIN B. HULL, HELEN OnFoBD.

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