Archive image from page 640 of The cyclopaedia; or, Universal dictionary. The cyclopaedia; or, Universal dictionary of arts, sciences, and literature cyclopaediaorun06rees Year: 1819 C a R R r a c riif diameter iifcu 1) ri vetting holt Tbc didmelci of ilie ring il >m<» Diftance from the ends ol the plates Diameter qi the he J bolts bun r Length Rivetting' plates < Breadth Thicknefs From the quarter-round Diameter of the travelling holt-plates 1 It- luppofcs thefe mortars, contrary to what has been the common practice, to be fo placed in their beds as to he moveable, and capable o
Archive image from page 640 of The cyclopaedia; or, Universal dictionary. The cyclopaedia; or, Universal dictionary of arts, sciences, and literature cyclopaediaorun06rees Year: 1819 C a R R r a c riif diameter iifcu 1) ri vetting holt Tbc didmelci of ilie ring il >m<» Diftance from the ends ol the plates Diameter qi the he J bolts bun r Length Rivetting' plates < Breadth Thicknefs From the quarter-round Diameter of the travelling holt-plates 1 It- luppofcs thefe mortars, contrary to what has been the common practice, to be fo placed in their beds as to he moveable, and capable of being raifed from an angle of 10 degrees to any under yo, and alio the cavity in each bed to be io made as to receive the wedges for railing the mortar with. Sea-Mortar-beds are likcwife made folid with very ftrong timbers but differ from the land-mortar-beda in point of form or figure, and have each of them a hole in the middle, or centre, for receiving the pintle-pin, or ftrong iron bolt, round which the bed may turn. They are placed on (trong wooden frames fixed into the bomb ketches, to which the pintles are faflened. The fore-part of a fea-mortar-bed is an arc of a circle defcribed from the centre of the pintle- hole. The following are their dimenfions in inches. See Jig. 28, 29, 30, .31, 32, 33,34, 3$, 36, 37,38 and 39. Diameters of the bores - 13 inch 10 inch inches, inches. The lengths of the beds The breadths of the beds The heights of the beds Diftances of the pintle-holes from the-) fore-ends j Diameters of the pintle-holes Diltances of the trunnions from the fore-ends Diameters of the trunnion holes Depths of the trunnion-holes h. Crofs-hed bolts - /. Square rivetting plates for ditto /â . Down bed-bolts ... in. Ded-bolller plates ... Keys, chains and (tuples Nails ro the bed-bolltcr bed Bed-bollter rings with loops Tumbrels, as we have already obferved, are carriages with two wheels, only are commonly made ufe of for carrying tools for miners, artificers, and
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Keywords: 1810, 1819, archive, book, bookauthor, bookdecade, bookpublisher, booksponsor, booksubject, bookyear, drawing, encyclopedias_and_dictionaries, historical, history, illustration, image, london_longman_hurst_rees_orme_brown, page, picture, print, rees_abraham_1743_1825, reference, university_of_toronto, vintage, zimmermann_a_albrecht_b_1860
