| 单词 | point screw |
| 释义 | > as lemmaspoint screw point screw n. Printing a screw used to fasten down a point (sense 21g) or a point-plate (point-plate n.). ΘΚΠ society > communication > printing > printing machine or press > parts of printers or presses > [noun] > tympan > point > plate carrying > screw of point screw1683 1683 J. Moxon Mech. Exercises II. 55 In the middle of each long Rail of the Tympan, is..an Hole..for the square Shanks of the Point-Screws to fit into. 1770 P. Luckombe Conc. Hist. Printing 321 At the other end of the plate is filed a long square notch..to receive the square shank of the Point Screws. 1854 T. F. Adams Typographia 231 The point-screws and duck-bill are then put on, which prevent the skin from starting. 1940 Chambers's Techn. Dict. 658/1 Point screws (Print.), screws for fastening machine points..on the feedboard of a printing machine. 2005 www.niulib.niu.edu 5 Sept. (O.E.D. Archive) The puller..lifts the frisket and loads paper into the tympan. Points, locked with point screws, prick through the sheet and hold it in place. < as lemmas |
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