IMPROVEMENTS IN LOOMS FOR WEAVING
Year: 1862

page_text: PROVISIONAL SPECIFICATION left by William Edward Gedge at the
Office of the Commissioners of Patents, with his Petition, on the 30th
June 1862. A communication from abroad by Alexander Lenne
Truffaut and Hubert Raimbault, both of Roubaix, in the Empire of
France.
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I, WILLIAM EDWARD GEDGE, of the Firm of John Gedge and. Son, of
No. 11, Wellington Street, Strand, in the County of Middlesex, Patent Agent,,
do hereby declare the nature of the said Invention for "IMPROVEMENTS IN
LOOMS FOR WEAVING," (a communication to me from abroad by Alexandre.
Lenne Truffaut and Hubert Raimbault, both of Roubaix, in the Empire of
France,) to be as follows:
This Invention consists of improvements in that part of a loom known as.
the cording or tie up machine, or apparatus, and permits working with as
inany lames as the loom will carry, and with a repetition of say thirty treadles;.
the object of this tie up machine is therefore to give the facility of making
on power looms figured fabrics, which have hitherto only been made by the hand,
loom. This tie up machine is composed essentially of a main framing, a
drum or cylinder divided into as many horizontal parts as there are treadles,
to the pattern, and into as many vertical parts as there are lames to the
pattern; a trundle keyed on the shaft of the, above-mentioned cylinder of
supports bolted. on the main .framing and carrying at their extremity a cross,

page_text: piece on which are fixed steel springs which are lifted by a screw placed on
the cylinder according to the reading of the pattern; of a box pierced with holes,
which receives the extremities of a number of small slides or slots equal to the
number of lames; the centre slots or slides receive the ends of the above-
mentioned springs and crotchets or hooks pass through the upper and lower
slots of a clutch or claw, which hooks as many of the lower crotchets or hooks
as the screws of the drum or cylinder raise springs, and as many of the
upper crotchets as there are springs lowered; of a driving plate fixed at the
extremity of the shaft of the loom, a pin or spindle passing through the plate
and carrying a connecting rod which acts upon levers bringing together the
lames, and presenting the crotchets to the clutch or claw; of a stop hook catch
or pawl which passes between the rods of the trundle; of a hook or crotchet
the spindle of which is in one of the levers, and which turns the drum or
cylinder; on this crotchet is rivited a piece which passes above or below an
inclined plane according to the motion given to the crotchet by the lever to
which it is attached. Motion is communicated to the apparatus by the
driving plate, and the eccentric motion of the spindle on the plate causes one
of the levers to rise and fall. One lever commands that which carries the
clutch or catch, and also, through an intermediate bar and lever, the lever
which presents the crotchets to the clutch. The cylinder or drum is instan-
taneously set in motion or arrested by the crotchets or hooks, the axle of one
of which is on one of the levers and of the other on the support bolter on the
main framing; the crotchet carried by the lever has at about three-fifths
of its length a small iron rod intended to pass above or beneath the small
inclined plane; when this rod passes under the inclined plane, which occurs
whenever the lever on which it is carried brings the lames together; this rod
forces the stop catch or pawl to rise, then the hook on the lever causes the
drum or cylinder to turn, and as soon as this is effected the rod abandons the
inclined plane and a spring sends the stop catch or pawl back to the trundle.
When the lever makes the reverse movement, the rod of the crotchet or stop
catch passes above the inclined plane.
The principal work of the machine is performed by the springs, the effect
of which is felt in four different ways. Firstly, when one of the screws lifts
them they present the lower hooks or crotchets to the clutch or claw.
Secondly, when the screws abandon the springs these immediately redescend
and present the upper hooks or crotchets to the clutch. Thirdly, as the screws
always raise the springs a little before the clutch seizes the crotchets, the
springs bend when the clutch arrives upon the crotchets, and causes them to

page_text: hook on as soon as the clutch has passed the extremity. Fourthly, the
springs serve further to maintain the crotchets on the clutch and prevent their
missing their effect. It will be evident that these improvements are based
upon the quadruple effect of the springs, the instantaneous setting in motion
and stopping of the cylinder and the novel way of bringing together or
assembling the lames.