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21,738
disk c. After the main detent M, has been
vibrated out of the are of the circle, in
which the points of the notches of the
scapement wheel rotate, it becomes detached
5 from the notch, which presses against it
and the lever is vibrated, and the detent F,
is brought within the are of circuit, so as
to form a stop for the notch next in suc-
cession, by the simultaneous action of the
o0 spring G, on the pin H, and the curved edge
b, striking the angular curved end of the
strip d.
This escapement is not likely to get out
of order by wear, or by a sudden jar, and
15 like the chronometer escapement, the vi-
brations of the balance are nearly per-
formed without pressure from the motive
power of the works.
What I claim as new and desire to se-
cure by Letters Patent, is- 20
The combination of the lever E, springs
G, K, and the detents formed on the for-
mer, arranged in the relation to the scape-
ment wheel described, with the pallets L, MI,
and said scapement wheel, so as to enable 25
the balance wheel to perform its oscillations
without pressure from the motive power of
the clock, or to be retarded by any other
resistance except that necessary to be over-
come by the vibration of the detent lever 30
E, during the action of the pallet L, on
the end of the spring K, as herein set forth.
JOSIAH BISHOP.
Witnesses :
R. M. Joi-xsoN,
M. W. TOWNSEND.