IMPROVEMENTS IN LOOKS
Year: 1864

page_text: PROVISIONAL SPECIFICATION left by William Clark at the Office of the
Commissioners of Patents, with his Petition, on the 11th November
1864. A communication from abroad by Théodore Maheu, Engineer,
Emile Lecorney, Advocate, and Clifford de Fleury, Proprietor, all of
29, Boulevart St. Martin, Paris.
I, WILLIAM CLARK, of 53, Chancery Lane, in the County of Middlesex,
Engineer and Patent Agent, do hereby declare the nature of the said Inven-
tion for "IMPROVEMENTS IN LOOKS," to be as follows:-
Hitherto in looms generally great difficulty has been experienced in
throwing the shuttle for wide widths of fabrics. Many arrangements of
shuttle drivers have been employed, which serve to complicate the loom, and
are very liable to get out of order.
The present Invention relates to an improved loom, which may be used for
weaving fabrics of any width. The improvements consist in causing the
shuttle guide to oscillate and incline alternately to the right and left of the
loom, and causing the shuttle to slide in an inclined plane to each side of
the loom. For this purpose the race planks, heddle bars, work beam, or
roller, and all the parts acting on the threads work in a movable frame, oscil-
lating on an axis mounted in two supports placed at the front and back of the
loom. These supports form part of the fixed frame of the loom, which carries
the necessary parts for transmitting motion to the movable frame and working
parts.

page_text: This Invention will be better understood by reference to the accompanying
Drawings. Fig. 1 of which shows a side elevation of the improved loom;
Fig. 2, front view of same, the movable frame being shown in an inclined
position; Fig. 3 shows a plan of the loom; while Fig. 4 shows detail of a
grooved drum for producing the throw of the shuttle. The letters apply to
all the four Figures.
frame a.
1.
a, framing fixed to the loom of any form or material desired; c, arms or
supports, cast or otherwise fixed to the back of frame a; d, wood frame, on
which is the batten, the rollers, and all accessory parts generally employed in
looms. This frame is mounted on an axis in supports b, c.
e, driving shaft,
turning in bearings fixed to frame a; f, g, fast and loose pulleys, the latter
being keyed on the end of shaft e; h, shaft turning in bearings fixed on
This shaft receives rotary motion from the driving shaft by means
of toothed wheels i, j, and turns once for every two revolutions of shaft e;
k, batten, sliding on bars 1, 1, fixed to movable frame d; m, iron framing fixed
to the frame of the loom terminating in a bearing.sliding on a fixed rod n.
The batten receives to-and-fro motion from shaft e by means of framing m;
p, arc, having at the centre, from which it is described, the axis of the oscil-
lating frame and fixed to frame a; q, second arc, also described from the
same centre as the first-mentioned, p being fixed to movable frame d;
r, rods actuated by the cranked shaft h; these rods are fixed to the arc q,
and thus produce the oscillation of frame d with all the parts carried by same;
t, t, cam grooved drums keyed on driving shaft e, regulating the motion of
levers u, u, for producing the throw of the shuttle. For this purpose the
drums are furnished with two grooves t¹, t, uniting in the manner shown at
Fig. 4. It will be readily understood that the throw of the shuttle is pro-
duced by the sharp curve u¹ where the one groove joins the other, while the
return curve u is lengthened so as to return the batten slowly to position.
This motion may be but slight where it is only necessary to overcome the
resistance of springs v, v, which are employed to maintain the shuttle at the
extremities of the batten to give time for beating up the weft. The motion
of the heddles is effected by the oscillation of arc q in front of fixed arc p.
1, 11, levers oscillating on movable arc q, and carrying the heddle bars 2, 21;
3, 31, bent arms forked on arc q, and furnished with friction rollers 4, 41;
5, arc concentric with q to which it is fixed, and in which oscillate the small
levers 6, 61. The arc 5 in combination with levers 6, 61, form sinuous guides,
on which run the friction rollers 4, 41, during the oscillations. The action of
the levers is such that when the roller 4 runs on arc 5 the roller 4' rises and
runs on lever 6¹, and inversely, thus causing the rise and fall of the rollers 4, 41,
2

page_text: during each oscillation the action of the heddles is the same as in ordinary
looms.
Any other means of working the heddles and throwing the shuttles may be
adopted besides those ordinarily employed, which, however, need no further
reference, the present Invention consisting in the oscillating or balance motion
of the battens, whereby the shuttle is caused to traverse the shed, as it were
of itself, or with the assistance of so slight a momentum as to permit the most
delicate fabrics to be woven by machinery of the widest widths.
It will be readily understood that the details of construction of the improved
apparatus herein described may be greatly varied without departing from the
principle of the Invention.