(57) This invention relates to an electrically-actuated mechanism for rail switch-points,
of the type wherein the actuating, checking and locking devices are arranged within
the container enclosing the switch-points mechanism, and the two internal operating
rods (T1, T2) thereof, arranged side by side parallelly to each other, are connected
to an elastic coupling device acting as a force-limiter and performing the functions
of friction, trailing, approach and of stabilizing the points. Said elastic coupling
device comprises a sliding ember or slide (3) overlying the internal operating rods
(T1, T2) and capable of sliding in the same longitudinal direction as said rods by
the action of an electric motor capable of rotating alternately in either directions.
The switch-points mechanism according to this invention is characterized in that said
elastic coupling device between the two internal operating rods (T1, T2) and the overlying
slide (3) comprises a coupling member (4) which is connected to the overlying slide
(3) through driving members (5,6,7,8.9.10.11) which are collapsible resiliently within
certain limits and which are disconnectible automatically when said limits are exceeded.
Said coupling member (4) is arranged between the two internal operating rods (T1,
T2) and is connected to each of them by means of two opposite driving abutments, one
of which..(13, 13') is stationary and the other (14, 14') is retractable so as to
be disengageable from the coupling member (4) on completion of the movement of the
switch-points in a direction for one operating rod (T1) and in the opposite direction
for the other operating rod (T2).
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