US1589765A - Circuit controller - Google Patents

Description

June 22 1926. 1,589,765

E. SCHEEMACKER ET AL CIRCUIT CONTROLLER Filed August 14, 1923 -5. a .E 711% srzwmcl-or I a L t I/ "w Patented June 22, 1926. I I I U NIT E D S T A T E S ATEN T OF F I C E EMILE .SCHEEHAJCKER AND GEORGES RAIMOND'OF Vs'OON-SOCKET, :RHODE ISLAND.

CIRCUIT CONTROLLER.

Application filed August 14, 1923. Serial No. 657,383.

The present invention relates to circuit outer end of the spring 10. The post may be 55 V controllers of the thermostatic type and provided with a clamping nut 24, but as adapted to be placed in rooms or other locathe instrument in many cases is placed at tions where dangerous heat or combustion the top of the room, said post has connected 5 may take place, and which will sound an thereto a downwardly extending link alarm under such circumstances. that is connected to another post 26 slidable no The object is to provide a very simple arin a vertical slot 27 formed in the face plate ticle of manufacture that will close a cirof a thermometer 28. This thermometer is cuit so as to sound an alarm or otherwise provided with the usual gage scale 29 and 1 operate a signal when dangerous heat conthe post 26 carries a. pointer movable ditions arise. along said scale. The post 26 also has a The preferred embodiment of the invenclamping nut 31. tion is illustrated in the accompanying With this construction it will be obvious drawings, wherein that the tension of the spring 10 can be 15 Figure 1 is a side elevation of the appavaried as desired by moving the post 26 up ratus, or down, this moving the link 25, moves the Figure 2 is a View in elevation with the post 22, and thereby increases or decreases front plate of the casing removed, the tension of the spring 10. Assuming the Figures 3, 4 and 5 are detail sectional parts as shown in Figure 2, normally the 20 views respectively on the lines 3-3, 41 terminal 17 of the lever 16 is out of conand 5-5 of Figure 2, tact with the mercury 14 in the cup 13. If, Figures 6 and 7 are respectively sectional however, an unusual or dangerous degree views on the lines 6-6 and 7-7 of Figure 1. of temperature occurs, the spring 10 will In the embodiment disclosed, a suitable automatically operate to turn the shaft 11, 25 casing is employed, comprising spaced front thereby turning the crank 18 and causing and rear plates 8 and 9, forming an open its forked end 19 to engage the lever 16 and housing. Within this casing is located a swing it until the terminal 17 is in the merthermostatic element 10 in the form of a cury. If, now, the cup 13 and the casing is coiled spring, the inner end of which is placed in an electric circuit containing an mounted on a shaft 11 j ournaled in the front alarm, it will be obvious that the circuit and rear plates 8 and 9. Mounted on the will be closed and the alarm actuated. The rear plate is a block 12 of insulating materelation of the parts is such that by moving rial, supporting a contact element 13, the the pointer 30 to the different degrees indiupper end of which is in the form of a cup cated on the thermometer the alarm will be that contains mercury 14. sounded when that degree of temperature is A post 15, supported on the block 12, but approximately reached. grounded on the casing, constitutes a mount- From the foregoing, it is thought that the ing for a lever 16 that is fulcrumed between construction, operation and many advanits ends on said post. One end of this lever tages of the herein described invention will has a downturned terminal 17 that is be apparent to those skilled in the art withadapted to move into and out of the merout further description and it will be uncury 1 1 of the cup. The other end extends derstood that various changes in the size, toward the coiled spring 10. The shaft 11 shape, proportion and minor details of conon which said spring is mounted carries a struction may be resorted to without decrank arm 18, the terminal of which is parting from the spirit or sacrificing any forked as shown at 19, this forked end being of the advantages of the invention. adapted to operate against the arm of the Having thus fully described our invenlever 16 opposite to that carrying the tertion, what we claim as new, and desire to minal 17. Preferably also the shaft is prosecure by Letters Patent, is vided with a counterweight arm 20. A circuit controller comprising a housing,

The outer plate 8 of the casing is provided a mercury cup terminal mounted in the with an arcuate slot 21, in which is slidably housing, a shaft journaled in the housing mounted a post 22, and the inner end of this at one side of the cup. a lever fulcrumed post is received by an eye 23 formed on the between its ends in the housing between the cup and shaft, one arm of the lever having the shaft and fixed thereto for turning the a portion that enters the cup, the other arm shaft and arm.

extending towards the shaft, a counter- In testimony whereof, We affix our signa- 10 Weighted arm fixed to the shaft and having tures.

a terminal yoke that receives and engages the other and adjacent arm of the lever, and

a heat responsive coiled spring surrounding EMILE SCHEEMACKER. GEORGES RAIMOND.

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