Modern instruments and methods of calculation : a handbook of the Napier Tercentenary Exhibition (1914)
Horsburg, E. M. (Ellice Martin), Napier Tercentenary Exhibition (1914 : Edinburgh, Scotalnd) · London : G. Bell · leaf 159
which lies in front of the machine is connectedwith the key levers which actuate the bars carrying the figures. Themotion of these bars is communicated by the actuator to one universalgear wheel. When the key 1 is depressed, the universal gear wheel moves1 tooth, and when the figure 9 is depressed,… … Fig. 3. engage with the universal gear of the actuator. It will be seen that whenthe totaliser, which of course moves with the carriage, arrives at a position,say, for writing pounds, whatever amount is written will be recorded fromthe actuator to the totaliser. The machine is fitted with a…
