Amateur mechanics ... a book for old and young who like to make things .. (1907)
Popular mechanics magazine, Chicago. [from old catalog] · Chicago, Popular mechanics · leaf 35
, nail soldiFF, btndli g posts; ii. spring. of brass and the armature, C, is made ofIron. The pivot, E, is made from a wirenail and is soldered to A. It should be filedto a point at each end so as to move freelyin the bearings, B, which are pieces of hardwood. The spring. H, is fastened at each end… … -:: A water rheo l y fitting a brass tube with a cork, through whicha piece of winmay be an old bi-cycle hand pump,A (see sketch),filled with PPoshing the wire.B, down Into water Ut-gulatinir the surface in con-tact, and thus de-creases the ■1 hsfpeianiparatus o f this c«lkind is suitable eurrenl…
Handicraft · Amusements
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