US736511A

US736511A - Electric trip mechanism.

Info

Publication number: US736511A
Application number: US12642202A
Authority: US
Inventors: Charles C Ely; Adolph Kobelt
Original assignee: Individual
Current assignee: Individual
Priority date: 1902-10-09
Filing date: 1902-10-09
Publication date: 1903-08-18
Anticipated expiration: 1920-08-18

Description

no K DBL.

PATENTED AUG. I8, 1903.

. C. C(ELYIz-A. KOBELT.

ELECTRIC TRIP MECHANISM.

urmonmn nun 0019. 1902.

Patented August 18, 1903.

CHARLES C. ELY AND ADOLPH KOBELT, OF KANSAS CITY, MISSOURI.

ELECTRIC TRIP MECHANISM.

SPECIFICATION forming part of Letters Patent No. 736,511, dated August 18, 1903. Application filed October 9, 1902. $eria1 No. 126,422. (No model.)

To a. whom it natty concern:

Be it known thatwe, CHARLES C. ELY and ADOLPH KOBELT, citizens of the United States, residing at Kansas City, in the county of Jackson, State of Missouri, have invented certain new and useful Improvements in Electric Trip Mechanism; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to electric trip mechanisms; and it has for its objectaconstruction wherein upon closing an electric circuit a weight will be dropped which in its fall may be made to operate a valve or actuate any other mechanism to start or stop an apparatus, or for any other purpose, it being understood that the invention in question may be employed for whatever purpose it is applicable to.

A further object of the invention is to provide a construction wherein after the weight is dropped the actuating-current will be shut off by breaking its circuit, this being accomplished automatically.

Other objects and advantages of the invention will be understood from the following description:

In the drawings forming portion of this specification, and in which like numerals of reference indicate similar parts in the several views, Figure l is an elevation showing the mechanism connected with a valve for operating the latter when the weight is dropped. Fig. 2 is avertical section through the mech anism, parts thereof being in elevation. Fig. 3 is a section through the frame of the solenoid in a plane above the latter and showing the solenoid and other parts in plan.

Referring now to the drawings, there is shown a loop-shaped frame 5, the sides of the upper portion of which are parallel and spaced sufficiently far to, receive therebetween a solenoid 6, the sides of this frame below the solenoid being converged and then continued parallel and slightly spaced. Within the solenoid is a slidable soft-iron core 8, which when the solenoidis energized is lifted into the solenoid and when the solenoid is denergized drops partly therefrom, the downward movement of the core being arrested by contact of a terminal screw 8' with the convergentportions of the sides of the frame 5. When the solenoid is energized, the the core projects from the upper end thereof.

In connection with the frame 5 and other parts above described are employed two spring-arms 15, having cars 15, which are pivoted between the lower end portions 30 of the frame 5, so that the arms project laterally and upwardly from the frame and also downwardly from the frame, these downwardly-db rected portions being curved in opposite directions in the form of hooks 7, which lie in a common plane andare so disposed that when the upper ends of the arms are moved outwardly or separated the free ends or the tips of the bills of the hooks move into contact. These books form clutching-jaws for engagement with the ring 19 of a weight 18, so that when the jaws are in positions shown in Figs. 1 and 2 they will support the weight. The hooks or clutching jaws Tare held in active positions by means of a toggle-

lever comprising links

16 and 17, which are pivoted together at their inner ends and overlap slightly, as shown in Figs. 2 and 3, the outer ends of the links being pivoted, respectively, to the upper ends of the arms 15, so that said lever lies with the pivot, which connects the links directly over and in the path of movement of the solenoid-core 8. When the toggle-links are moved to the positions shown in Figs. 1 and 2, the clutching-jaws are active and the arms 15 are under tension, and when the solenoid is energized and when the core is raised it strikes the mutually-connected ends of the toggle-links and starts them upwardlyand raises them until the jaws are separated to drop the weight. To returnthe toggle-links to the positions shown in Fig. 2, a rod 13 is provided, which is passed slidably through perforations in the end pieces or spool of the solenoid, the upper end of this rod being turned laterally and terminating in an eye 12, which slidably engages the rod 11, connected to the frame 5 and to the end of the solenoid-spool. This laterally-turned upper end portion of the rod 13 extends transversely of the toggle-links above and near to the connecting-pivot thereof, and when the inner ends of the links are moved upwardly by the solenoid-core the rod is lifted. To

return the links then, it is necessary only to draw the rod downwardly.

It is desirable to break the energizing-circuit of the solenoid as soon as the weight has been dropped, and for this purpose two

electrical contacts

26 and 27 are mounted upon the end of the solenoid-spool in such position that when the toggle-links are set, as illustrated in Fig. 2, the link 17 will bridge the contacts and close the circuit therebetween. The contact 26 is connected with one end of the solenoid-winding, while the other contact, 27, has a binding-screw 28 for connection of a line-wire, the second terminal or end of the solenoid winding being connected with a binding-screw 25 for attachment of a second line-Wire. When the toggle-links are moved upwardly by the action otlthe solenoid-core, the link 17 moves out of engagement with the

contacts

26 and 27 and the circuit is broken. The Weightin its tendency to move from the clutching-jaws forces the jaws apart and the upper ends of the arms toward each other, so

that the link 17 is carried positively from engagement with the contact. The weight is shown as connected by means of a cord 30 with a cut-off valve 31, the weight passing over a pulley 32, so' that when the weight is dropped the valve will be operated.

What is claimed is- 1. A device of the class described comprising a solenoid having a reciprocatory core, cooperating clutch-jaws, and means for bolding the clutch-jaws in operative position, said holding means lying in the path of movement of the core for engagement and move.- ment thereby into inoperative position.

2. A device of the class described com prising a solenoid having a reciprocatory core, a toggle-lever disposed for movement. of its links to break the lever by engagement therewith of the core when the solenoid is energized, a weight-clutch operatively connected with the toggle-lever, and electrical contacts in spaced relation and disposed for simultaneous contact by a toggle-link when the toggle-lever is in position for engagement by v the core, said contacts being included in the circuit of the solenoid.

3. A device of the class described comprising a solenoid having a reciprocatory core, a circuit-breaker for the solenoid disposed for actuation by the core when the solenoid is energized, and a clutch mechanism disposed for actuation by the core prior to breaking of the solenoid-circuit.

4:. A device of the class described comprising a solenoid having a reciprocatory core, pivoted arms having clutching-jaws to reoeive and hold a weight, and a toggle-lever having its links pivoted respectively to the arms and adapted to hold the arms with their jaws in engaging positions, said links lying in the path of movement of the core for engagement thereby to release the arms and their jaws.

5. A device of the class described comprising a solenoid having a reciprocatory core, pivoted arms having clutching-jaws to rereceive and hold a weight, a toggle-lever having its links pivoted respectively to the arms and adapted to hold the arms with their jaws in engaging positions, said links lying in the path of movement of the core for engagement thereby to release the arms and their jaws, and means for returning the links to their normal positions. v

6. A device of the class described comprising a solenoid having a reciprocatory core, pivoted arms having cooperating clutching jaws at one end, a toggle-lever having its links pivoted to the opposite ends of the arms and lying in the path of movement of the core, for actuation thereby to move the arms and separate their jaws and means for returning the toggle-lever to its normal position.

In testimony whereof we affix our signatures in presence of two witnesses.

CHARLES C. ELY. ADOLPH KOBELT.

Witnesses:

CALVIN J. FAIRCHILD, JOHN Y. KELMAN.