Show to protect lives alv of AL Anrod z mr an ingenious anil and simple instrument has been devised for the protection of surface men at work on oa the railways the inventor bir william arrol was led to apply ids tits mind to this matter in consequence of the numerous fatalities which have lately occurred among that claw ilass of railway servants in england the ansti instrument ament consists cons iala of a steel ihring connected with a portable elec electric trie battery and bell by a coil of wire two or three hundred hunolt ed yards long when the spring has ha been bolted into position on the inner side of the rail and almost push rush with the top of the rail the battery is carried to the neighborhood of where the workmen are engaged the connection being kept up by the coil of wire which is unwound to the the necessary length when a train cornea comes along the spring is depressed by the flanges of the wheel as they pass over and two metallic but tons one on the under side of the spring and the other on the upper side of the sole plate are brought into contact and complete an electric circuit supplied from the battery ringing the bell at the battery and thus wa warning riling the workmen of the approaching train the inston ments are to be kept at the signal boxe along the line so as to be readily avail able by the workmen sir william Willia mArrol arrol does not intend to patent the invention his sole desire is to render the surface mans life a less dangerous one and lie gives all railway companies permission permia aion to manufacture aa as many as they please chicago news |