IMPROVEMENTS IN CLOCKS
Year: 1885

page_text: I, GEORGE FREDERICK REDFERN, of the General Patent Office, N° 4, South Street,
Finsbury, in the County of Middlesex Patent Agent do hereby declare the nature
of the said invention for "IMPROVEMENTS IN CLOCKS to be as follows:-
دو
The chief impediment to the accurate working of clock movements as at present
constructed arises from the shake or play of the crutch fork or connecting rod
which connects the crutch or escapement rod to the pendulum rod; different
temperatures act on the mechanism of the movement in such a manner that such
shake or play is greater under the effect of heat and less under the effect of cold.
Heat gives more freedom and cold reduces it.
The present invention has for object to do away with all kinds of forks, or
connecting rods and to prevent all shake or play between the parts.
The accompanying drawing represents two different views of a clock escapement
constructed according to this invention showing the pallets and the escapement
rod or crutch, the pendulum rod and the counterweight hereinafter described.
A counterweight P, is screwed on a screw threaded rod K, which latter is fixed
to the pallet staff m, and forms a right angle with the crutch L, which latter
instead of being terminated with, for example, a fork is simply turned at right
angles at its lower end l. The counter weight P, fixed horizontally to the pallet
staff m, serves to constantly press the end O, of the crutch L, on one side only of
the pendulum rod N. Q, one of the plates of the clock movement.
By this arrangement no shake or play can take place between the parts during
the to and fro movement of the pendulum.

page_text: I GEORGE FREDERICK REDFERN, of the General Patent Office, No 4, South Street,
Finsbury, in the county of Middlesex Patent Agent, do hereby declare the nature
of this invention and in what manner the same is to be performed to be
particularly described and ascertained in and by the following statement :-
The chief impediment to the accurate working of clock movements as at
present constructed, arises from the shake or play of the crutch fork or connecting
rod which connects the crutch or escapement rod to the pendulum rod; different
temperatures act on the mechanism of the movement in such a manner that such
shake or play is greater under the effect of heat, and less under the effect of cold.
Heat gives more freedom and cold reduces it.
The present invention has for object to do away with all kinds of forks or
connecting rods and to prevent all shake or play between the parts.
In order to enable the invention to be fully understood I will proceed to describe
the same by reference to the accompanying drawing which represents two different
views of a clock escapement, constructed according to this invention, showing the
pallets and the escapement rod or crutch, the pendulum rod and the counterweight
hereinafter described..
Similar letters in both figures represent similar parts.
In the drawing a represents a counterweight screwed on a screw threaded rod b,
which latter is fixed to the pallet staff c, and forms a right angle with the crutch d,
which latter instead of being terminated with (for example) a fork is simply turned
at right angles at its lower end e-The counter weight a fixed horizontally to the
pallet staff c, serves to constantly press the end f of the crutch d, on one side only
of the pendulum rod gh, is one of the plates.of the clock movement.
By this arrangement no shake or play can take place between the parts during
the to and fro movement of the pendulum.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
1. The application to clock escapements of a counter weight adapted horizontally
to the pallet staff in the manner and for the purposes substantially as hereinbefore
described.
2. The improved clock escapement hereinbefore described and represented in
the accompanying drawing.