US1304008A - zimmer - Google Patents

Description

"P, H. ZIMMER.

CONTROLLING DEVICE. APPucATloN FILED 'ma'. 4, 191

1,304,008. Patend May 20, 1919.

lUETTED sTATEs PATENT oEEIcE.

PAUL H. ZIMMER, OF MILWAUKEE, WISCONSIN, ASSIGNOR T0 THE CUTLERfHAMMER MFG. CO., OF MILWAUKEE, WISCONSIN, A CORPORATION OF WISCONSIN.

CONTROLLING DEVICE.

Specification of Letters Patent.

Patented May 20, 1919.

To all who/n it may concern:

Be it known that I, PAUL- H. ZIMMER, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented new and useful Improvements in Controlling Devices. of which the following is a full, clear, concise, and exact description, referencebeing had to the accompanying drawing, forming a part of this specification.

This invention relates to motor controllers and more particularly to such devices as control a plurality of circuits.

One of the objects of thel invention is to provide such devices with improved means for effecting sequential opera-tion of the circuit controlling parts thereof.

Another object is to provide an improved controller wherein the parts thereof are ybiased to circuit closing position subject to movement therefrom in a definite sequence.

A further object is to provide an improved controller wherein the current controlling parts may be adjusted to operate 1n different orders and atdifferent intervals.

Other objects and advantages of the invention will appear hereinafter in connection with the description of the accompanying drawing which illustrates a typical embodiment of the invention particularly adapted for controlling the field strength of a motor. It is to be understood, however, that the invention is susceptible of additional embodiments within the scope of the claims appended hereto and that the device may be employed for various other purses.

In the drawing,

Figure 1 is a plan view of the controlling device, and

Fig. 2 is a side view thereof partially in Section.

The controller is mounted vertically upon an insulating panel l and includes a. plurality of switch members or contact elements 2, 3, 4: and 5 and an operating solenoid 6 therefor. The parts mentioned are carried by a supporting frame 7 attached to the panel 1. Stationary contacts 8 are also mounted on the panel 1 for coperation with the switch members, as will appear. The switch members 2 to 5 as shown comprise stamped metal arms and the same are pivotally mounted at their lower ends upon a hub 9 which is revolubly carried by a shaft 10 supported between bifurcated extensions 1l of the frame 7. Spaced studs. 12 are arranged on the hub 9 and the switch members are provided with apertures at their lower ends to receive said studs, whereby the switch members are movable wit-l1 the hub but are also permitted a limited pivotal or rocking movement relative thereto for a purpose hereinafter set forth. The hub 9 is also, provided with integral spaced radial lugs 13, 1-1, 15 and 16 arranged at different angles relatively to the hub and located directly in the rear of the respective switch members. The latter are releasably held in the open bearings provided therefor on the hub and are biased to bear against the radial lugs 13 to 16 by coil springs 17 mounted in the rear of a frame cross piece 18 on pins 19. Said pins are fixed to the switchv arms at their forward ends and project through the cross piece 18 and the respective lugs, the springs 17 being confined between washers 2O on the pins and tending to retract the latter.

Centrally of the hub 9 and preferably below the same there is extending crank lever 21 having at its extremity a weight. 22. The operating solenoid 6 is supported in the frame 7 beneath `the switch members and the solenoid core 23 1s operatively connected with the crank lever 21 by a link 24. A dash pot 25 or other means is provided to regulate the speed of movement of the solenoid plunger.

Referring to Fig. 2, wherein all the switches are shown closed, energiiation of the solenoid 6 effects counter-clockwise rotation of the hub 9 and opening of the switch members 2, 3, 1 and 5 successively by the offset lugs 13, 14, 15 and 16 respectively. Moreover, the springs 17 take up the pivotal play of each of the switch members prior to their abutment by the lugs 13 to 16 so that each switch is held closed during a certain amount of rotation of the hub 9. Thus the active face of each switch member is dragged slightly against its coperating contact and the engaging surfaces of the same remain bright. Furthermore, the springs 17, after opening of the switch members, continue. to bias the same against their respective lu s and thus to bias both the switch nlenrb rs and the hub in a clockwise provided a rearwardly direction in opposition to the solenoid. Accordingly upon denergization of the latter, the springs coperate with the weight 22 to edect closure of all the switches successively, but in an order inverse to the sequence of opening. Again due to the limited pivotal play of the switch members after the same abut the stationary contacts and are thereby arrested in their rotative movement,(a wiping action isl also effected in closing in a manner similar to that above described. It will be observed, however, that the final rotative movement of the hub 8, after closure of the switch member 1 and thus after cessation of the action of all -the springs 17 on the hub, is effected by the lever weight 22 alone.

The switch members 2, 3, 4: and 5 are also provided with adjustable pins 26 projecting therethrough and affording stops on the inner sides thereof for the lugs 13 'to 16. Said pins are releasably held against adjustment by looped spring washers 27 but are capable of adjustment relative to the lugs 13 to 16 to vary the distances therefrom so that the" intervals between the critical operations of the switch members may be varied at will and furthermore, the sequence of operation of lthe switchesmay be varied so that the same open orclose circuit in any desired progression or in groups.

I claim- 1. In combination, a stationary Contact, a coperating contact element, a pivoted supporting member for said element, the latter also having a bearing upon the former permitting relative movement thereof, and means constantly biasing said element, to-

. gether with its said supporting member, for

engagementdof said element with said stationary contact subject to disengagement by operation of said supporting member against the action of said biasing means.

Q. In combination, a stationary contact, a coperating contact element, a pivoted supporting member for said element, the latter also having a bearing upon the former permitting relative movement thereof, and

means constantly biasing said element, together with its said supporting member, for engagement of said element with said stationary contact subject to disengagement by operation of said supporting member against the action of said biasing means, said supporting member also having independent biasing means to continue its aforesaid biased movement after engagement of said element and .contact for the purpose set forth.

3. vIn combination, a stationary contact, a coperating contact element, a pivoted supporting member for said element, the latter also having a bearing upon the former permitting relative movement thereof, means constantly biasing said element, together with its supporting member, in a direction to effect engagement of said element with said stationary contact, said supporting member' also having independent biasing means to continue its aforesaid biased movement after engagement of said element and Contact to effect a sliding movement of the former relative to the latter, and electromagnetic means for operating said supporting member in reverse direction to positively move said element out of engagement with said stationary contact.

i. In combination, a relatively stationary contact, a coperating contact element, an oscillatable supporting member for said element, the latter having an open bearing on the former permitting it to rock thereon. a fixed member and a resilient connection between said contact element and said fixed member to hold said element in its bearing on saidsupporting member and to normally hold said element in a given relation with said stationary Contact subject to operation by said supporting member.

5. In combination` a relatively stationary contact, a coperating contactI element, an

oscillatable supporting member for said element, the latter'having an open bearing on the former permitting it to rock thereon, a fixed member and a resilient connection between said contact element'and said fixed member to hold the former in its bearing on said supporting member and to bias said element `to a position of engagement with said stationary' contact subject to disengagement therefrom by actuation of said supporting member. y l

6. In combination, a stationary contact, a coperating contact element, an oscillatable member for supporting said element, said element having an Aopen bearing on said member permitting 'it to rock thereon and said member having a part to engage said element at a distance from said bearing, a fixed member and a resilient connection between said' fixed member and said contact finger, said connection acting on said finger intermediate of its bearing and said engaging part of said supporting member.

7. In combination, an oscillatable member, a plurality of contact elements carried thereby, each of said elements having a lbearing on said member permitting it to rock thereon and said member having stops tov be respectively engaged by said elements, and independent tension devices for said elements for engagement with the said elements, coopera-tingr stationary contacts for said elements and independent tension devices for said eiements to normally hold the same in engagement with their respective contacts subject to disengagement therefrom sequentially by said lugs when said member is moved in one direction, said member providing ifor compound return movement of said elements under the iniiuence of their tension devices to first butt and then Wipe their respective contacts.

ln combination, a plurality of stationary contacts, coperating contact elements therefor, a common oscillatable supporting member for said elements, each of said elements having a pivotal connectionwvith said member and said member having a plurality of lugs arranged thereon in dilierent angular positions for engagement with said elements, independent tension devices for said elements yieldingly holding the same in engagement with said contacts subject to disengagement therefrom progressively by the lugs on said member when the latter is operated in a given direction and a solenoid for operating said member in such direction.

10. In combination, a plurality of stationary contacts, a plurality of cooperating contact elements, an osciilatable member, supporting said elements, each of said elements having a bearing on said member permitting movement of one relative to the other and said member having a plurality of lugs arranged thereon at dili'erent angles and serving as stops for said elements and adjustableV coperating stops on said elements.

11. In combination, a plurality of stationary contacts, a plurality of coperating elements, an oscillatabie member, support-ing said elements, each of said elements have a bearing on said member permitting movement of one relative to the other and said member having a plurality of lugs arranged thereon at different angles and serving as stops for said elements, adjustable coperating stops on said elements and independent tension devices for said elements, each biasing its respective element toward lthe stop lug provided therefor von said member.

In Witness whereof, l have hereunto subscribed my name in the presence of two witnesses.

PAUL H. ZIMMER.

Witnesses L. A. WATSON, TEKLA BOsT.

Images