IMPROVEMENTS IN WEAVING LOOMS
Year: 1862

page_text: PROVISIONAL SPECIFICATION left by Achille Tranquille Mercier at the
Office of the Commissioners of Patents, with his Petition, on the 30th
April 1862:
I, ACHILLE TRANQUILLE MERCIER, of the Town of Louviers, in the Depart-
ment of the Eure,, in the Empire of France, Engineer, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN WEAVING LOOMS," to be
as follows:
My improvements in looms apply principally to the following parts:-Firstly,
the lifting of the boxes by the cording or tie up by means of squares commu-
nicating by metal rods with other squares, which lift the shuttle boxes.
Secondly, metal racks, the teeth or notches of which uphold the boxes. at their
different heights by means of cramps or pauls in connection with the cording.
Thirdly, notched flats or plates pressed by a spring against the two fingers or
branches of à lever tied to the cordage by a cord, which raising the lever,
causes the paul to leave the notch of the rack, and permits the box to change
its position. Fourthly, a rack provided with two fingers, which finding them-
selves placed before one or other driver, permits one or other of the shuttles
to throw according to the requirements of the design to be produced. This
rack is set in motion right or left by a pinion which tooths into it and is fixed
on a shaft, at the end of which is also fixed a crescent, the two ends of which
are fastened-by a cord to the lifting wires of the cordage. In the two Sheets
of Drawing hereto annexed, and forming part of this my Provisional Speci-
fication, A, A', indicate the framing of the loom; B, B', beam or slay serving

page_text: to move the cording or tie up; C, C', cording, composed of a greater or lesser
number of lifting wires; D, D', metal rod connecting the beam with the
square E of the excentric F; G, Gʻ, vertical boxes, with two, three, or four
compartments, serving to hold the shuttles; H, hinged rod serving to lift the
boxes; I, I, I', I', metal rods connecting the square N to the two squares
J, J', communicating with the lifting wires of the cording; K, K', cords
fixed to the two extremities of the crescent, which by means of the lifting
wires of the cordage to which the cords are tied, turn to the right or left the
pinion L fixed on the same shaft; M, M', rack into which the pinion L
tooths, and which in its come-and-go motion presents a finger before one or
other of the drivers to prevent its lancing the shuttle, which should remain
quiescent; O' (Sheet 2), cord putting the lever S in communication with the
cording; P, plate or flat, with two notches, into which enter the two fingers
fixed on the lever S, and against which the flat is pressed by a spring. The lever
carries with it in its ascent the plate or flat and the paul Q, which then
disengages itself from the notches of the two racks U, fixed against the boxes,
which may then descend by their own weight; one of the two small pauls Q
surrounds the rack, permitting the notch and paul to disengage, but not to
rise more than the height of the notch or tooth. The lever S in retiring
being able to disengage itself from these two notches formed in the flat P, and
continue its ascent, permits the paul or cramp to re-ingage in the notches of
the rack as soon as required, and as soon as the lever S is delivered to the
influence of the weight with which it is charged; R, R' (Sheet 2), drivers, the
extremities of which come pressing against the fingers of the rack M, M',
whenever one of them is to remain in repose, these fingers being so placed
apart as always to leave one or other of the drivers free.