Jacquard machine (104 hooks)
griffe or frame for raising the hooks is lifted by the straps A,A, Fig
16, which are attached to the pulleys B,B, and a cord C over a pulley
on the same shaft as B,B, is attached to a treadle beneath the loom.
the weaver presses down this treadle the griffe is raised, and when
the treadle is released the griife falls of its own weight.
The cylinder is moved out and in by the pulley E, fastened on the bent
iron bar, attached to the frame which carries the cylinder, when the
griffe rises and falls.
D,D is a frame which lies in the turned-up portion of the hooks; only
a few hooks are shown, and the outer bars of the frame.
There should be a bar in the frame for each row of hooks. This frame
rises up and down with the hooks, the turn on the ends of wich must
be of such lenght that when the frame is raised by the hooks lifted
by the griffe, it will not be raised out of the tuns on those that are
This frame is for the purpose of preventing the hooks from turning round,
so that the turns on the upper end of them, as shown at A,A, Fig. 16A,
cannot get out of position to be caught by the blades or crossbars of
The lower ends of the hooks rest on a perforated board as shown in Fig.
16A, and tail cords are looped on them and pass through the perforated
board as shown.
To these cords is fastened the neck of the harness.
Fig.16A is shown a section through the spring box B. This box contains
a spiral spring for each of the horizontal needles, the end of which
press against the springs, which allow them to yield or move back as
the cards press on their points; but recover them again when the card
is moved away by the cylinder. Similar spring-boxes are now used.