A new alarm system utilizing the telephone

The telephone system is a great national resource, and the Lovell alarm system is one proposal to utilize the telephone as an inexpensive alarm arrangement in the densely populated metropolitan centers. The operation of a sensor or a button on the customer's premises would transmit the telephone number immediately from the telephone central office to the alarm bureau. This is accomplished by piggybacking the alarm service on the individual line much as if it were a two party line. The alarm service does not interfere with the use of the line for normal telephone individual line service and only minor changes are required at the telephone central office.