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printing a practical treatise on the art of typography as applied more particul

by charles thomas jacobi

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Author: charles thomas jacobi

Outdoors & Nature » Hunting & Fishing » Fishing » General

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...prohibitive for general work. For news- work screw chases are very handy. These chases are made specially as regards size. A thread tapped in the edge of the chase allows of a screw or screws being placed in and fastened up to the side or foot-stick. One kind is that shown in the following diagram, fig. 30. Fiir. 30. The Marinoni system, fig. 31, consists of a nut tightened up by means of a key ; its application can be seen at a glance. Ward's patent, figs. 32 and 33, is of an entirely different kind, the fastening-up being obtained by the old method of mallet and shooting stick. The ordinary metal side or foot- stick is used, and the quoin is really another stick of similar length, but cast as it were like a series of connected quoins. This plan gives a more equal pressure all along, but care should be exercised in first starting the locking-up, or undue pressure may be given at the driving end. All these patented apparatus are made of MECHANICAL LOCKING-UP APPLIANCES. 39 iron. As...

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