IMPROVEMENTS IN LOOMS FOR WEAVING.
Year: 1876

page_text: LETTERS PATENT to Richard Longden Hattersley, of Keighley, in the County
of York, Machine Maker, and Thomas Pickles, of Denholme, in the County
of York, Manager of Weaving, for the Invention of "IMPROVEMENTS IN
LOOMS FOR WEAVING.
Sealed the 4th July 1876, and dated the 7th January 1876.
PROVISIONAL SPECIFICATION left by the said Richard Longden Hattersley
and Thomas Pickles at the Office of the Commissioners of Patents on the
7th January 1876.
RICHARD LONGDEN HATTERSLEY, of. Keighley, in the County of York, Machine
Maker, and THOMAS PICKLES, of Denholme, in the County of York, Manager of
Weaving. "IMPROVEMENTS IN LOOMS FOR WEAVING."
"
This Invention relates to the healds or shedding apparatus, and the object is by
an improved combination and arrangement of parts to render the healds "positive
in their action, both as to the upward and downward movements.
Wee mploy a series of discs on the tappet or low shaft; a cam groove is formed in
the face of each disc, within which groove a runner or antifriction bowl attached to
a lever is received. The levers have their fulcrum at one end; the other and free
end of the lever has a link piece free to move on a pin joint. To the upper part of
the link is attached a rod, the other end of which is connected to the ordinary
"half-moon" levers." From the lower part of the link referred to depends a rod
with screw for regulating its length. The lower end of the rod is connected to
one end of a bottom lever, having its fulcrum about midway its length, and to the
other end of this bottom lever is attached the cords or rods connected with the
bottom staves of the healds. When the runner or friction bowl is in the eccentric
part of the cam groove the levers first herein referred to will be raised and the
bottom levers will thus be operated so as to draw the healds downwards "positively."
When the runner is in the concentric part of the cam groove the lever to which
it is connected will be forced downwards, and by its connecting rod the half-moon
levers will be operated so as to draw the healds upwards "positively."
It will be understood that the concentric part of the cam gives the requisite
dwell, according to the pattern being woven.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by the
said Richard Longden Hattersley and Thomas Pickles in the Great Seal Patent
Office on the 7th July 1876.
RICHARD LONGDEN HATTERSLEY, of Keighley, in the County of York, Machine
Maker, and THOMAS PICKLES, of Denholme, in the County of York, Manager of
Weaving. "IMPROVEMENTS IN LOOMS FOR WEAVING."
This Invention relates to the healds or shedding apparatus, and the object is by
an improved combination and arrangement of parts to render the healds "positive"
in their action, both as to the upward and downward movements.
We employ a series of discs on the tappet or low shaft; a cam groove is formed
in the face of each disc, within which groove a runner or antifriction bowl attached
to a lever is received. The levers have their fulcrum at one end; the other and
free end of the lever has a link piece free to move on a pin joint. To the upper
part of the link is attached a rod, the other end of which is connected to the
ordinary "half-moon" levers. From the lower part of the link referred to depends
a rod with screw for regulating its length. The lower end of a bottom lever, having
its fulcrum about midway its length, and to the other end of this bottom lever is
attached the cords or rods connected with the bottom staves of the healds.
When the runner or friction bowl is in the eccentric part of the cam groove the
levers first herein referred to will be raised, and the bottom levers will thus be
operated, so as to draw the healds downwards (positively). When the runner is in
the concentric part of the cam groove the lever to which it is connected will be forced
downwards, and by its connecting rod the half-moon levers will be operated so as
to draw the healds upwards "positively."
It will be understood that the concentric part of the cam gives the requisite
dwell.
Such being the nature and object of this our said Invention, we now proceed to
describe the same in detail, and in order that the description may be complete
we have annexed two Sheets of Drawings, and marked the views with letters and
figures of reference, the like Figure denoting a like part in each view.
Fig. A is a view of an end frame of a loom, on which our improved combination
of apparatus for operating the healds is shewn arranged in working position.
Fig. B. is a front view of the apparatus.
A series of discs 1, 1, 1, are arranged upon the elongated boss of the gear wheel 2
on the tappet or bow shaft 3; the wheel 2 is driven from the crank shaft by pinion
and intermediate wheels, as shewn by Drawings, or from other convenient "going
part" of the loom. A cam groove 4 is formed in the face of each disc, within
which groove a runner or antifriction bowl 5 attached to a lever 6 is received.
The several levers 6 are free to move upon the fulcrum pin 7; and on their other
ends each have a link piece 8 free to move on a pin joint. To the upper part of the
link 8 is attached a rod 9, the other end of which is connected to the ordinary
"half-moon" levers 10, and from the lower part of the link piece 8 depends a
rod 11 with screw for regulating its length. The lower end of the rod 11 is con-
nected to one end of the bottom lever 12; the fulcrum 13 of this lever is at a point
about midway the length of the lever, and the other end thereof by screw coupling
14, or by cord to the bottom heald staves 15. When the friction bowl ascends the
eccentric part 17 of the cam groove 4 the lever 6 will be raised, and the bottom
levers 12 will be operated, so as to draw the healds downwards "positively," the
.flat part 18 of the cam giving the necessary dwell for the passage of the shuttle
through the "shed;" but when the friction bowl passes over the greatest "throw"
of the cam, and to the concentric part of the groove, the lever 6 will be forced
downwards, and by the rod 9 the half-moon lever 10 will be operated, so as to
draw the healds upwards "positively." The concentric part of the cam gives the
requisite dwell during the "beat up" of the "lay." The springs 19 are for the
purpose of securing the bowl 4, being always at the bottom of the groove, whereby

page_text: the healds are kept even and level. A portion of the outer rim 20 of the cam is
omitted so as to facilitate entrance to or removal of the bowl from the groove
when the levers 6 are being placed in or removed from their working position.
Having thus fully described the nature and particulars of this our Invention, and
the manner of performing the same, we would have it understood that we lay no
claim to any of the parts considered separately; but what we do claim is, the use
of the apparatus combined and arranged in the manner and for the purpose herein
described and illustrated.
In witness whereof, I, the said Richard Longden Hattersley, for and on behalf
of myself and the said Thomas Pickles, have hereunto set my hand and
seal, this Twenty-seventh day of June, One thousand eight hundred and
seventy-six.
Witness,
CHARLES DINSDALE,
Clerk,
Keighley.
RICH³. L. HATTERSLEY. (LS.)