applied to the platen of a printing The accompanying engraving shows in perspective in this outlay two objects should be kept in view in the con- press for holding and guiding the paper that is printed Fig. 1, and in section in Fig. 2, a novel draughting pencil, struction of the road. In the first… … sample lengths of line giving great satisfaction in other parts of London and Great Britain, and are now carrying HALLECK'S PLATEN GAUGE. out some large orders. This rail seems to supply a want in one of its edges a shaft carrying the usual grippers. Ad- McGEE'S DRAUGHTING PENCIL. tramway roads,…
Patents · Iron · Improved · Patented · Scientific American · Manufacture · Poison ivy · Paper read · American supplement · Patent office · Time service · Western union · Steam engine · Water gas · American export
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