. Notes on torpedoes, offensive and defensive. on, the mode of operation ofthis apparatus is precisely similar to that already given, andneed not therefore be agaiu signal- Another form of this instrument is shown in Fig. 97. ItswhhmerPcuryaconS armature, electro-magnet, regulating spring, stud, shutter,motions. an(j attached lever are precisely similar to those first de- scribed, (see page 226,) but the connections are made bytwo mercury cups, (a) and (&.) When the lever is horizontaland the shutter drawn up and ready for action, the circuitof the signaling-battery is comple
. Notes on torpedoes, offensive and defensive. on, the mode of operation ofthis apparatus is precisely similar to that already given, andneed not therefore be agaiu signal- Another form of this instrument is shown in Fig. 97. ItswhhmerPcuryaconS armature, electro-magnet, regulating spring, stud, shutter,motions. an(j attached lever are precisely similar to those first de- scribed, (see page 226,) but the connections are made bytwo mercury cups, (a) and (&.) When the lever is horizontaland the shutter drawn up and ready for action, the circuitof the signaling-battery is completed through the mercury-cup (a,) along an arm (c) projecting downward from thelever (d,) and thence to the shutter-pivot and line terminalas before. When the shutter is down, as shown by thedotted lines, another arm, (e,) a prolongation of the lever (d,)falls into the mercury cup (c,) which latter is permanentlyconnected with the firing-battery. The object of the mer-cury-cups is to get rid of the springs in the original design, F--9. •i —Hl|l|l|l|l|l|l|H JFiriny Battery 233 electrical circuits, dependent on the pressure of spring, beingalways liable to interruption from dirt or oxide interveningbetween the points of contact. There would be much lessdanger of such a contingency if mercury-cups were 98 shows a plan of the apparatus; (fb) is the firing-battery Fig. 98.
Size: 1488px × 1680px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, bookpublisherwashi, bookyear1872
