Science: The Path of Progress: Mar. 27, 1939

Inventions for which patents have recently been granted by the U. S. Patent Office:

>Hydraulic brakes for bicycles.

>Inflated rubber furniture which can be deflated for storage in a small space.

> A calf weaner (a pronged harness which jabs a cow when her calf attempts tosuckle, thereby inducing her to object).

> A mousetrap which lassoes mice.

> A humane rattrap which shoots a dart through a rat.

> A toothbrush equipped with suction cups for withdrawing food particles from crevices.

> A moneybag which, when snatched from a messenger’s hand, administers an electric shock to the thief, sets off tear-gas bombs and sends out a radio alarm.

> An automatic paper-hanger—a machine which feeds out, accurately lines up, pastes and neatly places the paper on wall or ceiling.