| 摘要 |
<p>1,045,365. Pulsators for milking machines. DAIRY EQUIPMENT CO. Feb. 5, 1964 [Feb. 6, 1963], No. 4848/64. Heading A1M. A pulsator for a milking machine comprises a housing 10 provided with two chambers interconnected by a bore 18 open to a vacuum line 16 and within each of which is located a pulsator mechanism comprising a coil 46, 48 with corresponding armature 30, 32, means being provided for alternately energizing each pulsator mechanism. A teat cup connector 58 or 60 is provided for each chamber and opens into compartment 50 or 52, the connector 58 being connected to the rear teats, and the connector 60 to the forward teats of a cow. Each armature has a valve 34, 36 controlling a vent 42, 44 to atmosphere and a valve 26, 28 controlling the application of vacuum to the teat cup connectors 58. 60 the coils being energized so that the teat cups are subjected alternately to vacuum and atmospheric pressure. The energizing means is adjustable and vent 44 is smaller than vent 42 so that the forward teats of the cow are milked for a shorter time than the rear teats. The coils 46, 48 are enclosed in a plastics envelope so that the pulsator may be washed.</p> |
