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US 4,014,212 AGranted
Three-chamber gas meter
AssigneeThe Singer Company
InventorRobert Ritson Douglas
Life of this patent
Estimating the term…
Abstract
A three-chamber gas meter having a two-chamber cartridge inserted into a casing, the interior of which forms the third chamber. The meter is of compact design and readily mass produced. The cartridge carries a valve plate which communicates to each of the chambers and also to the inlet and the outlet. A rotary valve connected to the valve plate will sequentially and selectively connect the chambers between the inlet and the outlet to measure the gas flow through the meter. A flag and crank assembly is operatively associated with the cartridge to connect the rotary valve and the diaphragms, which expand and contract to actuate the internally connected flag and crank assembly, thus to rotate the rotary valve. A pair of flag rods are journaled in the cartridge and included in the flag and crank assembly.
Claims7
A three-chamber gas meter comprising:
- a. a hollow casing having an open top,
- b. a two chamber cartridge having a transverse valve plate detachably secured to enclose the casing top upon the cartridge being inserted into the casing to form a third chamber within the casing surrounding the two cartridge chambers,
- c. a cover detachably secured to the casing over the valve plate to form an inlet chamber,
- d. an inlet connected to the cover to communicate with the inlet chamber,
- e. an outlet connected to the cover,
- f. an outlet aperture formed in the valve plate in communication with the outlet,
- g. a pair of diaphragms connected to the cartridge, one to each of the cartridge chambers thereof to independently expand and contract responsive to gas flow through the valve plate,
- h. a rotary valve connected to the valve plate to control the flow of gas to and from the three chambers sequentially from the inlet to the outlet of the gas meter,
- i. a crank assembly connected to rotate the rotary valve,
- j. an index mounted in the casing and connected to the crank assembly to indicate the volume of gas flowing through the meter,
- k. a pair of flag assemblies separately internally connected within the cartridge at one end thereof to one or the other of the diaphragms, and at the other end to actuate the crank assembly responsive to expansion and contraction of the diaphragms
- 1. a pair of flag rods journaled internally within the cartridge, one for each flag assembly, with each flag rod extending above the valve plate whereby the flag assemblies connect to the crank assembly within the inlet chamber.
9 more elements
A three chamber gas meter comprising:
- a. a casing having an inlet and an outlet,
- b. a cartridge connected to the casing to form a casing chamber thereabout,
- c. a pair of diaphragms, each having an internal side and an external side, connected to the cartridge on opposite sides thereof to form a pair of separate cartridge chambers at the internal sides thereof, and each of the external sides of the diaphragms lying in the casing chamber,
- d. a rotary valve connected to the cartridge successively to communicate each of the chambers to the inlet and the outlet in a predetermined timed sequence to measure the gas flow through the meter,
- e. a crank assembly operatively connected to the rotary valve,
- f. a flag assembly having one end disposed internally in the cartridge separately and individually to connect to each of the diaphragms on the internal side thereof, and the other end connected to the crank assembly whereby the rotary valve will be rotated responsive to the separate expansion and contraction of the diaphragms.
- g. the flag assembly including pairs of flag rods, linkages and flag arms,
- h. the pair of flag rods journaled in the cartridge,
- i. the pair of linkages separately to connect individual cartridge chambers with one flag rod and one diaphragm on the internal side of one chamber, and the other flag rod on the other diaphragm on the internal side of the other chamber,
- j. the pair of flag arms connected between the crank and one or the other of the flag rods to continuously rotate the rotary valve responsive to expansion and contraction of the diaphragms,
- k. the cartridge including an internal partition to form separate passages communicating with one or the other of the cartridge chambers,
- l. the cartridge including a manifold separately communicating each of the chambers with the rotary valve,
- m. the cartridge is centrally disposed within the casing, and
- n. the pair of linkages internally connected between the flag rod and the diaphragm on the internal side thereof are disposed one above the other to prevent interference with the movement of either.
11 more elements
A three chamber gas meter comprising:
- a. a casing having an inlet and an outlet,
- b. a cartridge connected to the casing to form a casing chamber thereabout,
- c. a pair of diaphragms, each having an internal side and an external side, connected to the cartridge to form a pair of separate cartridge chambers at the internal sides thereof, and each of the external sides of the diaphragms lying in the casing chamber,
- d. a rotary valve connected to the cartridge successively to communicate each of the chambers to the inlet and the outlet in a predetermined timed sequence to measure the gas flow through the meter,
- e. a crank operatively connected to the rotary valve,
- f. the crank is journaled in the rotary valve to rotate about a fixed axis,
- g. a flag assembly having one end disposed internally in the cartridge separately and individually to connect to each of the diaphragms on the internal side thereof, and the other end connected to the crank whereby the rotary valve will be rotated responsive to the separate expansion and contraction of the diaphragms,
- h. the rotary valve has a radial drive slot therein,
- i. a drive pin is rotatively mounted in the crank to engage the drive slot at a predetermined radial distance to rotate the rotary valve at a corresponding speed upon rotation of the crank, and
- j. the drive pin has an eccentric portion whereby on rotation of the drive pin connection to the crank the portion of the drive pin engaging the drive slot will shift to a smaller radial distance or a larger radial distance to permit adjustment of the rotation of the rotary valve relative to the crank to advance or retard the same.
7 more elements
Dependencies are inferred from the claim text.