p to absolute vacuum. It permits the reception of DITTMAN'S IHFBOVED LOCKING NTTT. by a very slight exertion of manual power on the lever. In the air or gas contained in the receiver employed for experi- Fig. 2, the device is shown with the lever down and the The nut lock herewith illustrated, in… … jolts, and also to take up automatically the expansion or con teeth in the normal position. These dogs may be at- traction of the bolt, due to changes of temperature. tached to any ordinary standard. They are made of steel al- An iron nut is provided with an outer higher shell, the most entirely.…
Patents · Center · Colors · Consists · Improved · Rapid transit · Emery · British patent · White light · Working men · Double convex · Scientific American · Centrifugal force · Union iron · Sewing machine · Sir goldsworthy
Internet Archive · Public domain (published before 1931). Free to use for anything.
