Model making; including workshop practice, design and construction of models, a practical treatise for the amateur and professional mechanic .. (1919)
Yates, Raymond F. (Raymond Francis), 1895- ed · New York, The Norman W. Henley Pub. Co. · leaf 315
this fitshould be a good one. The armature should swing freely 312 Model Engineering back and forth but a loose and slovenly fit cannot be tol-erated as it will lead to trouble. The spring strip contacts are mounted upon brassangle pieces and their adjustment is shown by the photo-graph infinitely… … Fig. 221—The two-point relay switch position. Too little pressure will not hold the armaturein the desired position against the inevitable vibration ofa model boat hull. Of course the design of the switchis such that gravity aids in keeping the armature in eitherone position or the other as, when…
Machinery
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