Page:Popular Science Monthly Volume 89.djvu/729

 I'opitldr Srioicc Moiillili/

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��Combined Velocipede and Hobby -Horse

��ARi:CENTLY i.i- \Lntcd fiKiire t\ deviswl by Daiiifl Mark- mann, of St. Louis, Mo., combines the velocipclc witlialiobby-iiorse. Tiic legsof ihc horseare pi\'ot- allyattachcd to tiic jjody and have projectini; pieces positioned to en- gage arms on a sprocket- wheel within the body of the horse.

By this means, mo\e- ment of tin- let;s is obtained and a life-like appearance that is pleas- ing to youngsters gener- ally, is given the toy. The ch.iiii v hich operates the rear wheels is connected throuy;h the supporting hollow post to another chain geared to the velocipede.

Within the hobby-horse is a sprocket connected with the wheels through mechanism in the central pillar.

The legs of the horse swing backward and forward, giving the impression of a prancing steed to the youthful owner, while he is getting the same amount of exercise with his pleasure that he would on the ordinary xelocijx'de.

The toy is light in weight and easy-running, and tin-bridle is adjustable.

����Within the hobbyhorse is a sprocket connected with the wheels through mechanism in the central pillar

��One of these steam-operated sawing machines attended by a gang of four men will perform more work in an eight-hour day than thirty woodmen

��Felling Trees Economically with a Mechanical Swordfish

THE growing demand for lumber in England and the shortage of labor has resulted in the invention of a tree- felling machine which is said to perform more work in an eight-hour day than thirt\- woodmen. A feature of the machine is the cleanness of the cut and the closeness to the ground at which the saw works, leaving no trunks standing and thus preventing waste.

The machine is mounted on removable wheels for transporting it from place to place. It consists of a steam cylinder til teen inches in diameter with a piston- rod ha\ing a nincteen-inch stroke. It is attached to a light wrought-iron frame of tri- angular shape, so that the saw can be fed up to its work by means of a hand-wheel worm.

The saw is fixed to the end of the piston-rod and the teeth are designed to cut on the inward stroke only. The blade slides between guides, and there is no possibility of buckling. The boiler is heated by refuse wood picked up wherever the machine may be used.

It is espccialh' advantageous lor clearing timber from land destined to be u.sed for build- ings, parks or roadwa\s, where an even surface is essential.

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