[Illustration: IMPROVED PLAITING MACHINE.]
To remedy this and to prevent its occurrence, Messrs. A. Edmeston and
Sons, Manchester, in the plaiting machines they are now manufacturing
make the upper gripper bar movable as well as the table below. Referring
to the illustration, the upper gripper bars, A A, are capable of moving
about the center pins, B B, and when the machine is working are operated
in the following manner:
Upon the shaft, C, which revolves in unison with the crank shaft working
the plaiting levers and knife, are placed two cams, D, one at each end,
inside the main frames. These cams engage with and work two escapement
levers or pallets, E E, upon which rest the feet of four rods, attached
one end to each of the upper gripper bars. Upon these four rods are
helical springs of sufficient strength to hold down, by means of the
grippers to which they are connected, the folds of cloth that have just
been made. The cam, D, is so shaped that when the advancing plaiting
knife and cloth reach the front edge of the gripper bar, the gripper is
raised from the table to admit them freely. The instant the end of the
stroke is reached the anchor pallet or lever, E, escapes from the cam,
and the gripper bar is suddenly forced on to the knife and cloth by the
springs before mentioned, securely retaining the piece in its position.
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