Registers – Operating devices – Plural registers
Patent
1994-04-12
1996-05-14
Spyrou, Cassandra C.
Registers
Operating devices
Plural registers
G06M 100
Patent
active
055170080
ABSTRACT:
A mechanical cycle counter incorporates a cast aluminum, thermal isolating upwardly open connector coupled to a steam powered cyclic actuator depending stainless steel cylinder closed off at opposite ends by stainless steel end caps. A disk-like piston slides interiorly of the cylinder and is extended by a piston rod upwardly through the cylinder and through a hole within the bottom of the connector. A mechanical counter oscillation arm rotates approximately sixty degrees and is mounted to a shaft bearing a plurality of rotary wheels. A horizontal portion of the oscillation arm is in the path of the projecting end of the piston rod. A chamber beneath the piston and above the lower end cap receives steam. A stainless steel coil spring concentrically surrounds the piston rod and has one end abutting the piston and the opposite end abutting the upper end cap. A rise in steam pressure causes the piston to compress the coil spring driving the projecting end of the piston rod momentarily against the horizontal portion of the oscillation arm to cyclically increment the mechanical counter. Various stainless steel parts thermally isolate the actuator from the counter.
REFERENCES:
patent: 1357361 (1920-11-01), Stuber
patent: 1992991 (1935-03-01), Colley
Eastern Machine, Inc.
Spyrou Cassandra C.
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