HYDRAULIC MACHINE TOOLS.
Fig. 4 .—Machine for Rivetting Keels.
a Trolly. B b Post supporting Turntable. c Pair of Levers. d Carriage e Rivetter. f Parallel Motion, with Eccentric G, and Handies forvertical adjustment. hh Flush-topped Cylinder. 1 Keel of Ship. k Bottom Plates of Ship. l Hand Wheel for moving the Trolly.m Handle and Screw for adjusting the Rivet . N Balance Weight,
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Fig. 5.— Angle-Iron or Beam Straightener or Bender,from 5 to 100 tons power.
aa Right- and Left-handed Screws , carrying the Abutting Blocks bb, onwhich rests the Angle Iron to be bent c, by the Block D, controlled byTappet Gear which regulates the supply of water.e Tappet Gear working Valve F, admitting pressure to the Cylinder G,in which works the Ram h, carrying the Block d.k K Elevating Screws to vary height of work being bent.
Fig. 1 .—Portable Rivetter.
a Cylinder.b Fulerum,c c Rivetting Dies.d Gap, closing large Rivets.e Gap, closing small Rivets;in this case Abutmentsb are transposed withDies c c.
f Tension Rods which drawthe Levers together andadjust the space g be-tween them.
hh The Hydraulic Ram carry-ing the Moving Lever m.k Valve for admitting andexhausting the water.
A Stop Valve on Mains.b b Walking Pipes.c Swivel Joint.
d Connecting Pipe to Swivel e.f Carriage.
G Hydraulic Lift.
h Pipe conveying pressure from theLift to the Rivetter.
11 PipeconveyingwatertotheSwivelQ.1' i' Walking Pipes conveying water tothe Hydraulic Lift.
K Rivetter, 4'6" opening.i. Arm of Frame.
M Balance Weight.
a b Top and Bottom Castings,c Moving Table or Follower.d Matrix.e Block.
f Lower or holding-up Cylinder.G Vice-Table.h Plunger for Vice-Table.
1 Main Cylinder.k Valves.
L Main Ram carry- 1ing the movingTable c.
Fig. 2 .—Travellunc Crane for Rivetter.