Manual training--play problems; constructive work for boys and girls based on the play interest (1917)
Marten, William Samuel, 1877- · New York, The Macmillan company · leaf 49
|_ o uJ a O v -*r- =*- o or uj§ go Si ihi3 * x X X X l_:-£J » ^ ;-^ =-o2r 10s- o 1^ rn^ f<J^ *: o L. oId ■_; 0 id. §^J5h j»iij^lsfsi o o I— CO (^ j Jor (- «5 O C 5 UJ UJ 6- fc I CO -< 3 3 J — 4- co — — proportionately as thick; and a more thorough bracing is neededbecause of the greater… … RUNNING WHEELS. Many ingenious lever and eccentric typesof running wheel can be constructed, a few of which are illustratedin Figs. 2 and 3 of the opposite drawing, and also the drawing onpage 25. With these problems opportunity is given for the study ofmechanics of the lever and eccentric. The…
Manual training · Toys · Games
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
