. Railway mechanical engineer . ging, heavilycase-hardened. There are five dogs in a set, with a capacityranging from J/2 in. to 3 in. in diameter, each size havingan automatic adjustment of JX in. A RADICAL DEPARTURE IN FREIGHTCAR DOOR FIXTURES ONE of the trying problems which railway employeeshave to face is that of opening freight car doors with-out damage to the doors. A new device which isintended to remove this difficulty is the Jerry Loc-Lever works on the leverage principle and whenajiplied takes the place of locks, hasps and starters. Theiron bar which forms the lever pr
. Railway mechanical engineer . ging, heavilycase-hardened. There are five dogs in a set, with a capacityranging from J/2 in. to 3 in. in diameter, each size havingan automatic adjustment of JX in. A RADICAL DEPARTURE IN FREIGHTCAR DOOR FIXTURES ONE of the trying problems which railway employeeshave to face is that of opening freight car doors with-out damage to the doors. A new device which isintended to remove this difficulty is the Jerry Loc-Lever works on the leverage principle and whenajiplied takes the place of locks, hasps and starters. Theiron bar which forms the lever proper is suspended fromthe side plate of the car by a bolt and reaches a point a fewinches below the lower edge of the car door. Another baris fastened to the car door and extends across it horizontallyabout one-third the way froin the top. To this are attachedfour fulcrum pinions formed of bolts inserted through steeltubes, large enough in diameter to revolve around the boltand thus fomr a roller bearing. The handle of the main. A Combined Door Lock and Opener lever is so constructed that the seal or the lock of the carcan be inserted through convenient orifices. In operation,when the door is closed the Loc-Lever bar lies against thelast pinion and holds the door securely in place. Whenthe door is to be opened the seal is broken, thus releasingthe lever, which is then raised away from the car a distancesufficient to pas? it over the last pinion, against which itthen lies in a diagonal position. A pull is exerted on thehandle and from the resulting leverage the door is forcedopen a short distance. The operation is repeated on thethree other pinions in turn, with the result the door is fullyopened without damage. The device takes its name from the nickname of its in- 744 RAILWAY MECHANICAL ENGINEER Vol. 93, No. 12 ventor, H. F. Jerolaman, of the traffic department of theAtchison, Topeka Sc Santa Fe, who is familiarly known as■Jerr>. In his work Mr. Jerolaman noted the diffic
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
