he screw has a handle disk, by turning which the sleeve is moved to engage a one of the sprocket wheels. In connecting this gear AN IMPROVED ENGINE. with a bicycle ‘wheel, the latter is provided with two The engine shown in the illustration has a valve ar- MAROLD’S CAR BRAKE. sprocket wheels, one… … in their models. Other motors of larger size are made CLARK’S ENGINE, apply the brakes, the coming together of the ends of by the manufacturers, Messrs. Goodnow & Wightman, the cars, pushing the rack bar inward, causes the lever 63 Sudbury Street, Boston, Mass., one size being pow- the opening of…
Internet Archive · Public domain (published before 1931). Free to use for anything.
