Interesting New Inventions.
A doorknob connected with an electric lamp that may be switched on by pressing a button has been patented by a New York inventor. The invention is expected to help materially in the sometimes difficult process of finding the keyhole after dark. The doorknob is illuminated. The same principle is applied to the doors and dials of safes.
A cattle guard invented by an Arkansas man, a section foreman, has been approved by railroads. It is made in three sections, so that it can be removed for track surfacing. The guard consists of rollers, which are made in a frame resting on top of the ties.
A Philadelphia University professor has invented a dust-proof, fire-resisting glass case for museum specimens.
Wireless apparatus that weighs but eight pounds, yet will transmit messages twenty-one miles and has received signals more than three hundred miles, has been invented by a New Jersey man.
A sand box for automobiles, like the familiar device on locomotives, to distribute sand under their tires to prevent skidding, has been patented by a Massachusetts inventor.
What is believed to be the largest conveyer belt in the world, 893 feet long by thirty-six inches wide, has been made for an Ohio stone quarry.
To keep the base lines of ball grounds dry when it rains, a Pennsylvanian has patented a canvas cover, easily rolled for removal.