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584,651
and the reversing-lever of the engine having
been placed in a central position, thereby
centering the valve,the stop-pin is introduced
into the sleeve and screwed downward until
5 its lower end firmly locks with the valve, as
shown in Fig. 2 and at the left in Fig. 1.
Having thus described my invention, I
claim as new and desire to secure by Letters
Patent-
1o 1. In a balance-valve,the combination with
a valve provided with a release-opening in
its top, of a sleeve held in the valve-casing
above the valve and having its lower end in
communication with the release-opening of
15 the valve, the said sleeve having each of its
ends internally screw-threaded, whereby the
sleeve is adapted to be closed by a plug or to
receive a stop -pin for engaging the valve,
substantially as and for the purpose set forth.
20 2. In a balance-valve, a sleeve secured in
the cover and having its lower end over the
upper portion of the valve, and a stop-pin
constructed to be placed in the said sleeve,
the lower portion of the stop-pin finding a
25 countersunk seat in the upper portion of the
balance-valve, as and for the purpose set
forth.
3. In a balance-valve for locomotives, the
combination, with a valve having a release-
opening in its top, together with a seat, and 30
a sleeve secured in the cover of the steam-
chest, extending from an exterior point on
the cover to a point over the balance-valve,
the said sleeve being in communication with
the release-opening, the said sleeve having 35
its lower end reduced in diameter and inte-
riorly threaded, of a plug removably placed
in the upper end of the steam-chest, and a
stop-pin arranged to be placed in the sleeve
when the plug is removed, the said stop-pin 40
having a threaded portion for engagement
with the interiorly-threaded lower portion of
the sleeve, the lower end of the stop-pin find-
ing a seat in the upper portion of the balance-
valve when the pin is in position in the sleeve, 45
as and for the purpose set forth.
JAMES ALEXANDER SADLER.
Witnesses:
CHARLES LEVI,
ALLEN BEVILLE.