Air pressure gage for railroad train lines

Claim 1

APPARATUS FOR MEASURING THE PRESSURE IN A RAILROAD TRAIN LINE AT A CONNECTED AIR HOSE COUPLING THEREON HAVING A PAIR OF IDENTICAL MATING PARTS EACH CARRYING AN ANNULAR SEAL MEMBER HAVING A RADIALLY DIRECTED ANNUALR SURFACE IN SEALING AND AIRTIGHT ENGAGEMENT WITH THE OTHER, SAID APPARATUS COMPRISING MEANS FOR MEASURING AND INDICATING AIR PRESSURE, A RELATIVELY THIN AND FLAT FORK-LIKE MEANS HAVING LATERALLY SPACED APART TIMES AND A THIN SAMPLING PORTION PROJECTING FORWARDLY FROM AND INTO THE SPACE BETWEEN SAID TINES, SAID TINES HAVING CORRESPONDING PAIRS OF FLAT, OPPOSITELY FACING POSITIONING FACES, THE POSITIONING FACES FACING ONE DIRECTION ON SAID TINES LYING IN SUBSTANTIALLY ONE PLANE AND THE POSITIONING FACES FACING THE OTHER DIRECTION ON SAID TINES LYING IN SUBSTANTIALLY ANOTHER PLANE SPACED APART FROM AND GENERALLY PARALLEL TO SAID ONE PLANE, SAID SAMPLING PORTION HAVING A LONGITUDINAL FORWARDLY PROJECTING AXIS LYING BETWEEN, PARALLEL TO AND GENERALLY EQUIDISTANT FROM SAID ONE AND SAID OTHER PLANES AND THE POSITIONING FACES OF SAID TINES LYING THEREIN AND HAVING A LONGITUDINAL PASSAGE THEREIN IN FLUID COMMUNICATION WITH SAID PRESSURE MEASURING MEANS AND TERMINATING AT AN OPENING ADJACENT THE FORWARD END THEREOF, SAID TINES BEING RECEIVABLY SLIDABLE BETWEEN THE PAIR OF IDENTICAL MATING PARTS OF THE CONNECTED HOSE COUPLING ON OPPOSITE SIDES OF THE SEALINGLY ENGAGED ANNULAR SEAL MEMBER SAND WITH SAID CORRESPONDING PAIRS OF SAID OPPOSITELY FACING POSITIONING FACES ON SAID TINES IN GUIDING AND POSITIONING ENGAGEMENT WITH THE CORRESPONDING ONES OF THE PAIR OF IDENTICAL MATING PARTS THEREBY POSITIONING THE LONGITUDINAL AXIS OF SAID SAMPLING PORTION BETWEEN AND GENERALLY IN THE PLANE OF THE SURFACES OF SEALING ENGAGEMENT OF THE SEALINGLY ENGAGED ANNULAR SEAL MEMBERS AND IN SEALING ENGAGEMENT WITH SAID SEAL MEMBERS WITH SAID OPENING IN FLUID COMMUNICATION WITH THE TRAIN LINE.