In [Fig. 12ª] I show two such coils connected in series, the terminal expansion strip Gx of the front coil being connected to one end of the lever I, and the opposite terminal G of that coil being connected to the shortest one of the rear set of levers F1ª, the terminal Gy of the rear set being connected to the other end of the lever I. Thus two or more such coils may be connected, and the force of expansion and contraction of the combined coils transmitted to the lever I. When a number of such combined coils are suspended from the knife-bars E, E¹, the levers connecting their respective terminals may be themselves connected by a system of compound levers such, for example, as shown in [Fig. 13], to be hereinafter referred to.
Referring now to [Figs. 13] to [20] inclusive. These figures illustrate another form of the invention whereby not only the power-storage device of the preceding
figures may be dispensed with, but also the main spring of the clock there shown, both of these elements being supplanted by apparatus effecting the raising and lowering of weights (in this instance shown in the form of balls), the force of expansion and contraction of the coils being utilized to operate a rotary member which elevates a series of weights and discharges the same into a storage receiver, the clock (or other machine) being operated through the energy so stored and given up by the falling of said weights.
As illustrated in said figures, this feature of the invention consists of a frame, indicated in whole at 10, located about midway the length of the expansion coils shown in [Fig. 1], and it may be supported by securing it to the uprights C, C¹, or in any other suitable manner.
Said frame comprises two horizontally disposed longitudinal framing members, 10ª, 10b, which are connected at each end by cross-bars (not shown).
Mounted on the supports 10ª, 10b, are four uprights, 12ª, 12b, 13ª, 13b. The uprights 12ª 12b are connected at their upper ends by a longitudinal framing member 14ª, and the uprights 13ª 13b are connected by longitudinal framing member 14b, said framing members 14ª 14b being also in turn connected at their ends by transverse bars (not shown), said members constituting an open frame for the working parts of the apparatus.