US463793A - System of electric lighting - Google Patents

Description

(No Model.)

B. J. HODGSON 82; J. W. STEARNS, Jr. SYSTEM OF ELECTRIC LIGHTING.

No. 463,793. Patented Nov. 24, 1891.

V A5"- 8 .7 5 0/4; 40% \wg I dad-2 24 /7 WITNESSES Arm/ME UNITED STATES PATENT OFFICE.

EDGAR J. HODGSON AND JOEL \V. S EARNS, JR, OF DENVER, COLORADO.

SYSTEM OF ELECTRIC LIGHTING.

SPECIFICATION forming part of Letters PatentNO. 463,793, dated November 24, 1891.

Application filed February 28, 1891. Serial No. 383,156. (No model.)

To aZZ whom, it may concern: generally, 13 the locking-bolt, and 1a the Be it known that we, EDGAR J. lloDdsoN striking-plate secured to the casing. and JOEL 1V. STEARNS, J r., citizens of the Located within theframe and in an opening United States of America, residing at Denver, forming a continuation of the bolt-socket 15 is 5 in the county of Arapahoe and State of Coloacylindricalshell16,providedwithasolid base rado,haveinvented certain newand usefullm- 19, both formed of suitable insulating mateprovements in Systems of Electric Lighting; rial. The opening for the reception of these and we do declare the following to be a full, parts is formed by turning into the casing, clear, and exact description of the invention, and is therefore cylindrical to correspond 10 such as will enable others skilled in the art to with the shape of the parts. This shell is which it appertains to make and use the same, threaded, as shown at 17, whereby it may be referencebeinghadto theaccompanyingdrawscrewed into the socket formed for its recepings, and to the figures of reference marked tion, thus affording an easy and convenient thereon, which form a part of this speciflcameans of inserting and removing the shell, 15 ion. the extremity of which is provided with a Ourinvention relates toanimproved method groove 18, permitting the use of a screwof controlling the electric current by the driver of suitable shape. The base 19 is sepashooting or withdrawing of a locking-bolt, rate from the shell and forms a seat for a whereby the making and breaking of the circoil-spring 20, located in the chamber 21 of 20 cuit are effected. the shell and engaged in front by a sort of The object of this invention is to prevent piston or plunger 22, provided with a stem the burning of the electric lamps in a room 23, normally projecting from the shell into in cases where, by inadvertence or mistake, the bolt-socket. The plunger, like the shell, the occupant has left his room without turnis composed of suitable insulating material. 25 ing 011 the lamps. Screwed upon stem 23 and engaging head This application of the invention is very is a ring 24, composed of copper or other extensive, since it includes its use in hotels, material forming a good conductor of the boarding-houses, &c., where the loss by reaelectric current. Extending through the shell son of the guests carelessly leaving the lamps 16 and base 19 on diametrically opposite o burning in their rooms during their absence sides of the chamber 21 are apertures in is very great. which are located copper or other suitable In the accompanying drawings is illusmetal plates 25, which at the rear extremity trated an appliance for carrying out or pracof the base are flanged to contact therewith 8 5 ticing the invention. and secured in place by screws 26, to which 3 5 Figure 1 is a longitudinal section of the apare attached the circuit- wires 27 and 28. The pliance located in the casing or jamb of the forward extremities of plates 25 are flanged door adjacent to the lock, which is shown in to contact with metal rings 21. Plates 25 dotted lines. Fig. 2 is an enlarged longitudiconnect the shell and base together, so that nal section of the appliance, shown in conthey constitute a symmetrical body of con- 0 nection with the locking-bolt. Fig. 3 is an venient size and easily handled and attached elevation of the appliance alone and on the as if they were formed integral and constisame scale as shown in Fig. 1. Fig. 1 is a tuted but a single part. front end elevation of the appliance or a view The mechanism located within the shell is 5 looking in the direction indicated by arrow protected and concealed in front by a cir- 5 a in Fig. 2. Fig. 5 is a rear end elevation or cumferential flange 16, formed integral with a view looking in the direction indicated by the shell, surrounding stem 23, and in contact arrow 1) in Fig. 2. Fig. 6 is a transverse secwith plates 25. It will thus be seen that when tion taken on the line as on, Fig. 2. ring 2-i is in contact with plates 25 the elec- In the views, wherein similar refercncetric circuit is completed through the medium 50 characters indicate corresponding parts or of these parts, and that when the plunger is elements of the mechanism, let the numeral pressed backward to the position i di t 10 designate a door, 11 the frame, 12 the lock in Fig. 1 and by dotted lines in Fig. 2 the circuit is broken. Supposing wires 27 and 28 are connected with the lamps in a room, the shooting of the bolt 13in locking the door forces the plunger to the position indicated in Fig. 1 and by the dotted lines in Fig. 2 breaks the circuit and extinguishes the lights. It will thus be seen that by the use of the appliance illustrated in the drawings our improved method of controlling the electric current may be carried out or practiced.

It is supposed that in shooting the lockingbolt it will be done from the outside of the door by turning the key in the usual way. As soon as the door is unlocked or the boltwithdrawn ring 24: is returned to contact with the plates 25 and the circuit again established, the lights in the room being turned on.

The fastening of the door from the inside may be by a sliding bolt or by another keyactuated bolt manipulated through another key-hole. These things are matters of detail which may be regulated according to the requirements of each particular case.

It will be readily seen that the appliance could be easily arranged so that the shooting of the bolt could make the contact and the withdrawing of the bolt break the contact! simply by reversing the mechanism heretofore described. Ilence \Vhat we claim is 1. In an electric-lighting circuit, the combin ation of lamps located in aroom controlled and operated by means of a cut-out located in proximity to the lock of a door leading into said room, said cut-out adapted to be operated by the mechanism of said lock, whereby the burning of the lights is controlled, substantially as described.

2. In a circuit-closer, the combination of a cylindrical casin g of insulating material and circuit-terminals in said casing throughout its length, flanged 011 the ends to embrace the stem of an insulated spring-pressed plunger working in said casing, and carrying a conducting-ring for bridging the terminals when the plunger is pressed to the extremity of its stroke, substantially as described.

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

EDGAR J. IIODGSON. JOEL IV. STEARNS, JR. Witnesses:

WM. MoCoNNELL, F. 11. JoHNsoN.

Images