PERFECTIONNEMENTS AUX CLES A ECROUS DES CHEMINS DE FER

IMPROVEMENTS ON RAILWAY NUT WRENCHES

Revendications

Claim 1st A nut wrenching machine composed of the following elements to wit: a frame, carrying a nut holder secured to an arbor following the nut on its bolt, journalled in a block supported by said frame, a gear to turn the arbor to screw the nut, and a clamp to secure the frame fixedly in position for operation, whereby to turn the nut continuously. 2nd The combination, with a frame having a clamping device for securing machinery to the rails, of a nut holding arbor, having an endwise movement to follow the nut screwing on the bolt, and a gear to rotate the arbor by hand power, whereby to turn the nut continuously. 3rd The combination, with a frame having a clamping device for securing the machine to the rails, of a nut holding arbor journalled in bearings, sliding on ways secured to the frame, and a gear to rotate the arbor by a crank, whereby contiguous nut can be screw ed without changing the position of the machine. 4th The combination of arbor E, having nut holder D, sliding block F, chain wheels G N, endless chain R and crank handle 0, with the parallel bars f f1, secured to main frame by side bars e e1, and with the standard c. 5th The combination, with the block F, of latch J, cam m, springs jj and studs h h, for simultaneously locking the block F to the rails f f1 and engaging the latch with the screw arbor. 6th The combination, with the driving gear, the block E and arbor D sliding on rails f f1 of the main frame for serving two or more bolts with nuts without changing the postion of the machine.