Page:Popular Science Monthly Volume 92.djvu/683

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��To Lock the Ends of a Belt, Slip a Pin Through Two Registering Holes

SIMPLE in construction, easily attached and quickly disconnected is a new- belt connector which consists of a hinge with a removable pin. One half of the hinge is riveted to one end of the belt, and the other half to the other end. After the belt has been placed over the pulleys, the two ends are brought together, and a rawhide pin is pushed through the alined holes of the hinge. The belt can easily be re- moved by removing the rawhide pin which holds the two parts of the hinge together. The connector provides a flat and flexible, yet sufficiently strong joint for narrow belts.

���Push in the pin and the btlt connection is made, forming a strong, flexible joint

��Watertight Compartments to Pro- tect Ships From U-Boats

THE submarine war which Germany is conducting against the Allied Powers has caused tremendous losses to shipping already and it is generally ad- mitted that the problem confronting the allied nations is of serious importance. The question, how to check the activity of the submarines is, of course, paramount

This shows the effect of shell fire on the plate covering of a merchant ship

��but next to it comes the question as lo how best to protect ships from sinking after they have been attacked by a sub- marine and torpedoed. The naval author- ities of the allied countries are wrestling with the problem of waging war upon the German U-boats, while the ship builders are called upon to find a solution of the second problem.

The accompany- ing two illustrations, showing the extent of the damage caused to French ships by shell fire and a tor- pedo form a power- ful argument in fa- vor of the use of watertight compart- ments in the con- struction of freight- carrying merchant ships. Ships equipped with such compartments will remain afloat a long time and may be able to reach the nearest port in safety, instead of sinking in a few minutes after the attack as in the case of so m.any well- known boats.

���.Kiotoa © Underwood and Underwood

Enormous hole torn in the side of a merchant ship by the explosion of a torpedo

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