Patent GB-347320-A (GB)
Title: Improvements in milking machines
IPC: A01J5/04
Filed: 1930-02-03
Abstract: 347,320. Cow-milkers. AKTIEBOLAGET SEPARATOR, 8, Fleminggatan, Stockholm.-(Assignees of Hapgood, C. H. ; 26, Rutgers Place, Nutley, New Jersey, U.S.A.) Feb. 3, 1930, No. 3615. Convention date, Feb. 2, 1929. [Class 84.] In a milking-machine of the kind in which a milk pail is interposed between the teat cups and the milk pipe line leading to the milk reservoir, and in which the passage of milk may be effected either from the teat cups to the milk pail or from the milk pail to the milk pipe line, means are provided whereby the milk in the milk pail may be discharged into a receiver independent of the milk pipe line. The milk pail k, Fig. 3, is connected to a valve casing 60, Figs. 3, 8, and 9, provided with a port 65 opening into the milk pipe line h, and with nipples 10, 20, 30, 40 connected respectively through a pipe 12 and valve 14 with the bottom of the pail k, through a pipe 21 with the claw w connected to the teat cups z, through a pipe 32 with a chamber 33 communicating through a port with the top of the pail k, and through a pipe 42 and valve 43 with the top of the pail k. The valve casing 60 contains a valve 61 provided with ports 62, 63, 64, of which the port 62 is always in communication with the port 65 and the port 64 is open to atmosphere. When the valve 61 is in the position shown in Figs. 8 and 9, the top of the pail k is open to atmosphere through the port 64, conduit 42 and valve 43, and the milk in the pail is forced through the valve 14, conduit 12, port 62, and the milk pipe h into the milk reservoir, which is always under vacuum. When the valve 61 is moved to the right to a position in which port 63 connects the nipples 20, 40, the chamber 33 at the top of the pail k is subjected to suction transmitted from the milk pipe k through the ports 65, 62, nipple 30, and pipe 32, and milk is drawn into the pail from the claw w through pipe 21, port 63, pipe 42, and valve 43. If the valve 61 is turned into an intermediate position, the communication between the pail and the teat cups is cut off, and the milk in the pail k may be weighed by the scale 70, whilst by moving the valve 43 into a position to place the top of the pail into communication with the atmosphere and turning the valve 14 to close the pipe 12 and open the nipple 13, the milk, or a sample thereof, may be discharged from the pail into an independent receiver. The outer chambers of the teat cups z are connected by tubes x to the pulsation chamber of the claw w, which is connected either to a main pneumatic pulsator, or to a main electric pulsator which may be of the kind described in Specification 316,974, (Class 84, Milking &c.]. When a main electric pulsator is employed, it is connected by an electric pulsation line, which may be merely an electric wire forming part of a circuit which is alternately opened and closed by the main pulsator, with an electromagnet s, Fig. 4, mounted in a coupling l provided with conduits m, n, o, p. The conduit m communicates through a valve r with the vacuum pipe line i, and when the circuit to the electromagnet is closed by the main pulsator the armature t lifts, and conduit n is connected through conduits o, m with the vacuum pipe i; when the armature drops, conduit n is open to atmosphere through the conduit p. Conduit m is therefore under constant suction and conduit n is subjected to pneumatic pulsations. The conduits m, n are connected by pipes u, v with the pulsation chamber of the claw w, the pulsator in which is operated by the pulsations in the pipe v to put the tubes x alternately in communication with the vacuum pipe u and with the atmosphere. The pipe u may be dispensed with, the pipe v being connected to an open chamber communicating with the tubes x. The milk pipe h, the vacuum pipe i, and the main pulsation line may extend across the stalls of a milking house which is provided with a series of milk pails k.