Discovery reports (1935-1936) Discovery reports discoveryreports11inst Year: 1935-1936 47& DISCOVERY REPORTS N. Rear propeller guard and lifting handle, secured at the top along with M to J and below to C /'T7* \ O. Propeller shaft bearing of lignum vitae or special anti-friction metal (Tenaxus Ai Plastic metal) (Figs. 3). P. The propeller (see Fig. 6) consists of three blades each z| in. long from boss to tip and iÂ¥ in. wide at widest part. These are set in a cast central boss and each secured in position by a screw. X3ZT INCHES O I 2 I â â â t - â -1 . TXT L LlL Fig. 5. Scale draw
Discovery reports (1935-1936) Discovery reports discoveryreports11inst Year: 1935-1936 47& DISCOVERY REPORTS N. Rear propeller guard and lifting handle, secured at the top along with M to J and below to C /'T7* \ O. Propeller shaft bearing of lignum vitae or special anti-friction metal (Tenaxus Ai Plastic metal) (Figs. 3). P. The propeller (see Fig. 6) consists of three blades each z| in. long from boss to tip and iÂ¥ in. wide at widest part. These are set in a cast central boss and each secured in position by a screw. X3ZT INCHES O I 2 I â â â t - â -1 . TXT L LlL Fig. 5. Scale drawing of the Type II Recorder seen from in front with part of the towing eye D removed to show the details of the vertical fin assembly hehind. The internal details of the forward casting A and the internal mechanism frame are shown in broken line. For letter references see text. By means of these screws they may be fixed at any desired angle, so that the pitch of the blades may be altered to give varying speeds of revolution in relation to the passing water, and thus a varying speed of winding to the gauze bandings in the internal mechanism. Each section on the gauze may therefore be made to represent one or more miles of sea traversed as A numbered scale is provided on the boss against each blade, so that each may be correctly adjusted by bringing an engraved line on the blade opposite a particular point on the adjacent scale. The boss is drilled to slide on to the propeller shaft to which it is secured by two set screws. The tail end of the propeller shaft is drilled to take a split pin which is inserted as a safety measure. 1 Seep. 495.
Size: 1239px × 1615px
Photo credit: © Bookend / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: archive, book, drawing, historical, history, illustration, image, page, picture, print, reference, vintage
