IMPROVEMENTS IN LOOKS AND HEALDS FOR WEAVING
Year: 1869

page_text: PROVISIONAL SPECIFICATION left by Thomas Sagar, Thomas.
Richmond, and Christopher Catlow at the Office of the Com-
missioners of Patents, with their Petition, on the 11th December
1869.
We, THOMAS SAGAR, Machine Maker, THOMAS RICHMOND, Manu-
facturer, and CHRISTOPHER CATLOW, Overlooker, all of Burnley, in
the County of Lancaster, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN LOOKS AND HEALDS FOR WEAVING," to be
as follows:-
The object of the first part of our Invention is to reduce the cost and
wear of the healds, which we propose to do in the following manner :-
The warp on leaving the warp beam is taken over the vibrator or bearer
and over and under the weaver's rods, thence under and over two rods,
by which we form one shed by depressing one rod and raising the other.
The one depressed is attached by cords or other suitable means to pulleys
on a cross shaft; on the same shaft is a smaller pulley to which we attach
a strap connected to the treadle or other motion. To the rod above alluded
to we attach other cords which we carry upwards and over two pulleys
supported by the loom top, and from thence they pass downwards, and
are connected to the rod which is raised when the other rod is depressed.

page_text: Although this shed is formed entirely by the rods the warp passes
through the healds as heretofore either through the eyes or above and
below them or above and below a loop as may be found convenient, as the
healds have neither to lift nor depress the warp in this shed but merely to
act as guides to the warp. The shed above described which is formed by
the rods is much tighter than the other shed formed by the healds
which have little more to do than to lift a slack warp. That portion of
the warp which is depressed by the rod passes over the loop of the back
heald, the other half that is raised by the rod passes under the loop of
the front heald. The shed made by the healds forms a crossing in front
of the rods, the next shed formed by the rods takes the crossing out and
leaves an open shed.
The second part of our Invention relates to giving cover to cloth,
which we propose to do in the following manner :-The lease rods are skip
shafted, that is to say, two under and two over, instead of being trodden
in, which is one under and one over (as described in the Provisional
Specification of Letters Patent applied for by Sagar and Richmond on
the 14th day of August 1869, No. 2428) which are raised by an
eccentric on the crank shaft or other suitable part of the loom.
The third part of our Invention relates to the prevention of floats,
which is performed as follows:-From the loom top we suspend a light
heald without eyes or nooses, which is attached to a light bar working in
centres attached to the lay beam; this bar is in communication with a
light lever under the lay cap for knocking off the fork lever on the occur-
ence of floats. The action is as follows:-As the lay heats up it draws
forward the suspended heald, which if obstructed by a float operates on
the light lever above described.
The fourth part of our Invention relates to the treading motion, and
consists of a guide pulley placed between the treadles and the healds,
The back heald is connected to the front of one treadle underneath the
guide pulley. The front heald is connected underneath the guide pulley,
nearer the fulcrum of the other treadle; by this arrangement the back
heald is raised higher than the front heald to obtain a uniform lift by
equal tappets.