Suiter Swantz IP takes a look back at past inventions and inventors with our Patent Of The Day.
On this day in 1920, Ralph L. Hinmam was granted U.S. Patent No. 1,330,872 for a MILKING MACHINE.
This invention relates to certain improvements in milking machines, and pertains particularly to a milking machine of the valve chamber type in which each valve chamber is preferably suitably connected to a small-diameter, long-stroke piston pump for producing vacuum in the chamber and to suitable teat cups into which the milk is drawn by vacuum produced in the valve chamber and the connecting hose by said pump.
It has been usual to provide the valve chamber with a suitable inlet for milk and an exhaust for air, both preferably positioned adjacent the upper end of the chamber and penetrating the wall of the chamber itself, and with a valve outlet for the milk at the lower end of the chamber, the valve being movable to open and close said outlet all as shown in reissued Letters Patent No. 18,876, granted to Arthur V. Hinman and Ralph L. Hinman under date of February 9, 1915.
The primary object of the invention here is the production of a milking machine of the-valve chamber type which shall be easily cleaned and kept clean, the parts of which are readily accessible and which shall be efficient in the operation of milking, and the structure illustrated as exemplary of this invention operate in a manner distinctly different from that of the reissued patent above-referred to, in that the valve chamber itself is movable under the combined action of gravity and suction toward and from a stationary valve which renders the chamber substantially air tight, except for the communicating passages above-referred to.
Suiter Swantz IP is a full-service intellectual property law firm serving all of Nebraska, Iowa and South Dakota. If you have any intellectual property questions or need assistance with any patent, trademark or copyright matters and would like to speak to one of our patent attorneys please feel free to contact us.
