grease fittings

[1930]

This has prob. been beat to death on this site but the search index here is to broad to help. Does anyone have any info ( pict. specifically would help ) on the different types of grease fittings avail from say the teens to the mid thirties or so and also when they phased out one to go to another. Thanks

[Bob Call]

There are three basic types of pressure lubrication fittings (grease fittings) and several sizes and variations of the three types. The original was the pin fitting created by Arthur Gulborg, the son of the owner of Alemite Die Casting and Manfacturing Company, in 1916. In 1918 he sold the U.S. Army on using his "Alemite High Pressure Lubricating System". About this time Osacr Zerk created a sysem on which the hose and fitting did not mechanically connect like the Alemite pin fitting. The connection was maintained by the pressure of the grease gun. In 1922 Alemite introduced the "button head" system which also was a pressure connection. In 1924 Alemite bought the Allyne-Zerk company. It is now common to call all types of these lube fittings "zerks" like "kleenex" for tissues and "xerox" for photo copies. Following are links that show the three basic types of fittings. When the pin fitting page opens click on the plus box next to the part number for the picture of the fitting. At the top of that page are names of the various types. Click on a name, like button head, to view those.

Pressure Lubrication Fittings
Pin Type Fittings - Alemite

[1930]

Thanks Bob, I am assuming this is the gun that worked than with the zerk fittings, it is what would be considered a push type gun because there is no mechanical attachment, it would simply be pushed into fitting, is that correct?