120875468
Historical Note on a Recurrent Combinatorial Problem
122388919
Enumeration of quadrangular dissections of the disk
124628297
On the non-existence of a type of regular graphs of girth $5$
124310136
A new proof of a theorem of Dirac
124806549
Sur les ensembles de sommets indépendants dans les graphes chromatiques minimaux
121338541
Enumeration of Triangulations of the Disk
A method of draining oil from a transmission housing, of an oil-injected screw compressor comprising a compressor housing containing rotor means and a transmission housing. A shaft of the compressor extends into the transmission housing from the compressor housing and the transmission housing is underslung relative to the compression housing. The first portion of the compressor intake stroke, or rotation, is prevented from being filled with intake gas such that a depression is created. Said depression is applied via a bore to a sump portion of the transmission housing, so that the absolute pressure differential between the sump and the suction portion of the rotor means draws oil out of the sump and into the rotor spaces. A compressor employing this method of draining oil is also described.
123473446
Hesse's theorem for a quadrilateral whose sides touch a conic