US777535A

US777535A - Burglar-alarm.

Info

Publication number: US777535A
Application number: US21998404A
Authority: US
Inventors: Joseph W Pickens; Albert J Ross
Original assignee: Individual
Current assignee: Individual
Priority date: 1904-08-08
Filing date: 1904-08-08
Publication date: 1904-12-13
Anticipated expiration: 1921-12-13

Description

No. 777,535, PATENTED DEC. 13, 1904. J. W. PCKENS L A. J. ROSS.

BURGLAR ALARM.

APPLIOATION FILED AUG. s, 1904.

N0 MODEL,

woentou/ WMM UNITED STATES Patented December 13, 1904.

PATENT OFFICE.

JOSEPH W. PIOKENS AND ALBERT J. ROSS, OF JONESBORO, LOUISIANA.

BURGLAR-ALARNI.

SPECIFICATION forming part of Letters Patent N 0. 777,535, dated December 13, 1904.

Application iiled August 8, 1904.

To lf/ZZ 7,071,071@ t may concern:

Be it known that we, JOSEPH W. PIcKENs and ALBERT J. Ross, citizens of the United States, residing at Jonesboro, in the county or Jackson and State of Louisiana, have invented certain new and useful Improvementsin Burglar-Alarms; and we do 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 burglar-alarms; and one of the objects of the same is to provide a reliable and eiiicient circuit-closing device which may be readily attached to a gate or door and which operates to close a circuit whenever the door is opened.

Another object of our invention is to provide a device of simple construction and which may be connected up with a bell for giving' an alarm when the circuit is closed upon opening a gate or door.

These and other objects are attained by means of the construction and arrangement illustrated in the accompanying drawings, in whicl Figure 1 is a diagram illustrating a burglaralarm made in accordance with our invention. Fig'. 2 is a front view of a gate-post provided with a spring circuit-closer. Fig. 3 is a rear elevation of the same. Fig. 4 is a transverse section taken through the gate-post and showing thev arrangement of our circuit-closing device.

Referring to the drawings for a more particular description of our invention, the numeral 1 represents a gate or door upon which is arranged a spring circuit-closing device. Secured at one side of the gate is a latch-keeper 2, having secured thereto at one end a spring 3, said spring extending away from thelatchkeeper at its opposite end and having secured thereto a bolt 4, which extends through the latch-keeper, through the post, and at the opposite side of the post is provided with a contact-nut 5. A slotted plate 6 is secured to this side of the post, and a contact-wire 7 is secured by binding-screws 8 9 at one side of the slotted plate, the contact-nut 5 normally serai No. 219,984. da model.)

bearing upon the connection 7. The line-wire 10 is attached to the bolte and is held in place by a nut 11. Secured to a binding-post 12 is a wire 13, and said

wires

10 and 13 are covered with waterproof insulation and are led to the ground and extended to the house and wired into a room or rooms provided with a battery 14, extending from thence to a switch 15 and to a bell 16. Then the gate 17 is closed, the spring' 3 is pressed toward the latch-keeper 2 and the contact-nut 5 is moved out of contact with contact-wire 7, thus breaking the circuit. Should, however, the gate be opened, the spring' 3 pulls the bolt outward until the contact-nut bears against the wire 7 and closes the circuit, and thus ringing the bell 16 until the gate is again closed or until the switch 15 is operated to cut out the bell.

It will be obvious that our device may be used in connection with a'door as well as a gate and that the latch-keeper 2 may be dispensed with and a plain plate for supporting the spring substituted therefor.

Our invention is or' simple construction and can be made available readily for its purpose.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-e 1. A burglar-alarmcomprising a latchkeeper, a fiat spring secured at one end to said latch-keeper' and having its opposite end normally extending away from said latch-keeper, abolt secured to said spring and passed through the latch-keeper, a contact-nut on said bolt, a contact-plate, electrical connections between the nut and an alarm-bell, and a gate or door adapted to move the spring to break the circuit, substantially as described.

2. A burglar-alarm comprising a gate-post having secured thereon a latch-keeper, a spring secured to said latch-keeper at one end and having its opposite end extending away from said latch-keeper, a bolt secured to saidspring and passing through the latch-keeper, a gatepost, a plate on the opposite side of the gatepost having a contact-wire secured thereto, a contact-nut on the bolt, a wire secured thereto by means of a separate nut, a binding-post, a contact-wire and connections between the contact-nut, the binding-post and the battery, a our hands in presence of two subscribing Witswitch, a bell and a gate adapted when closed nesses.

to Inove the spring and break the circuit be- JOSEPH V. PICKENS. tween the contact-Wire and contact-nut and to ALBERT J ROSS. 5 permit the circuit to be closed When the gate Witnesses:

is open, substantially as described. V. G. STEWART,

n testimony whereof We have hereunto setJ XV. S. JONES.`