e parts are combined with a right and left hand common with the ones now in- vogue, but the method of pro- that can be multiplied or reduced in their rotary power as screw, E, with a thumb piece to operate it, so that by its rota- pelling it is quite different. tion the jaws,F, are opened or… … it. The effect of the right and left hand screw is to give sim- is to be revolutionized. Something of utility, convenience, The object of the improvement of Gompertz was to bring ultaneous and equal movement to each jaw of both pairs to and economy may come of the innovation ; meanwhile it is the…
Patents · Iron · Antedated · Address · Water · Patent office · Improved · Force pump · Feed water · Pure white · White light · Centrifugal force · Scientific American · Young men · Antedated january · Liquid fuel
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