Year: 1887

page_text: Date of Application, 24th Aug., 1887
Complete Specification Left, 23rd May, 1888
Complete Specification Accepted, 24th Aug., 1888
We CHARLES HAHLO, CHARLES EDWARD LIEBREICH, Machine Makers and
THEOPHILUS HANSON Foreman Mechanic all of 16 Mill Street Bradford in the
County of York do declare the nature of this invention to be as follows:-
This Invention relates to apparatus for drawing down the heald staves and consists
of an improved combination of levers, eccentrics and springs, so designed as to give
in their working a minimum variation in the power required for raising the healds.
According to this our said invention, we employ for each of the bottom heald
staves, two levers parallel therewith and cach carried on a cross shaft of a framing
supported by the bottom rail of the loom. The shafts serves as fulcrums for the levers.
and their inner ends are toothed segments gearing with each other, the outer ends of
the said levers are connected by cords, with the bottom heald staves.
Below or under and at right lines to the length of each of the sector levers, is a
cross shaft, on which is a loose eccentric. Connected to a hook near the outer ends of
each lever is a strap, preferably leather, which is passed under, and secured to the
eccentric by a set screw, the other end of the strap is carried forward and attached to
the lower end of a spiral spring, the upper end of which spring is attached to the lever
near its fulcrum shaft.
In operation the action is, that as the levers are raised, the strap operates the
eccentric, which in its turn, not only draws on the spiral spring, but also moves and
changes the angle or line of tension, so that instead of the springs increasing resistance
as elongated the effect of the operation by the eccentric is, to secure nearly as may be,
a uniform resistance and to considerably reduce the power required, as compared
with a direct pull, upon, and direct elongation of spiral springs, as commonly applied

page_text: for purpose of drawing down the healds. There will be any number of pairs of levers,
eccentric and springs according to the number of staves or shafts in the loom and the
position of the hook attachment for the strap as well as the connecting cords of the
levers and heald staves may be adjusted on the said levers as required.
Dated this 9 of Ano 1987
WALTER BRIERLEY,
Town Hall Buildings, Halifax,
Agent for the Applicants.
Improvements in Appliances Connected with the Healds of Looms
for Weaving.
We, CHARLES HAHLO, CHARLES EDWARD LIEBREICH, Machine Makers, and
THEOPHILUS HANSON, Foreman Mechanic all of 16, Mill Street, Bradford in the
County of York, do hereby declare the nature of this Invention and in what manner
the same is to be performed, to be particularly described and ascertained in and by
the following statement :-
This invention relates to apparatus for drawing down the heald staves, and consists
of an improved, combination of levers, eccentrics, and springs so designed as to
give in their working a minimum variation in the power required for raising the
healds.
According to this our said invention we employ for each of the bottom heald
staves two levers parallel therewith and each carried on a cross shaft of a framing.
The shaft serves as a fulcrum for the levers, and their inner ends are connected to
each other by a pin joint, the outer ends of the levers are connected by cords to the
lower heald staves. Below and at right angles to the length of the levers are cross
shafts on which are loose eccentrics. Connected to the levers, by hook, or catch is a
strap, which is passed under, and secured to the eccentric by a set screw, the other
end of the strap is carried forward and attached to the lower end of a spiral spring,
the upper end of which is attached to one lever near its fulcrum stud.
Such being the nature, and object of the said invention the following is a complete a
description of same, reference being had to the accompanying drawings forming a
part of this specification in which :-
Fig. 1 is an end view of part of loom shewing our improved appliances connected
to the lower heald staves.
Fig. 2 is a side elevation of our improved appliances drawn to enlarged scale.

page_text: pair
According to this invention we employ for each of the bottom heald staves, a
of levers 1. 2. carried on a cross shafts 3. 4..of a framing 5 supported by the bottom
rail of the loom. The shafts 3. 4. serve as fulcrums for the levers 1. 2. and their inner
ends are connected to each other by a pin or knuckle joint 6; the outer ends of each
pair of levers 1. 2. are connected by cords 7--7 with the bottom heald staves 8. 8.
Below, or under, and at right angles to the length of each of the levers 1. 2. are
cross shafts 9. 10. on which are loose eccentrics 11, 12. Connected to a hook or
catch 13 near the outer ends of each lever 1. 2. is a strap 14, preferably leather,
which is passed under, and secured to the eccentrics 11. 12. by a set screw 15, the
other end of the strap is carried forward and attached to the lower end of a spiral
spring 16, the upper end of which spring 16 is attached to the lever 1 or 2 near the
fulcrum shaft 3. 4.-There being one eccentric, 11 or 12 one spiral spring 16 and one
attachment 14 for each pair of levers J. 2.
In operation the action is as follows: As the pair of levers 1. 2. are raised their
strap 14 operates the eccentrics 11 or 12 which in turn not only draw on their spiral
spring 16 but also moves, and changes the angle or line of tension, so that instead of
the springs 16 increasing resistance as elongated the effect of the operation by the
eccentrics 11-12. is to secure, nearly, as may be, an uniform resistance and to
considerably reduce the power required as compared with a direct pull, upon, and
direct elongation of spiral springs as commonly applied for purpose of drawing down
the healds.
There will be any number of pairs of levers, eccentrics, and springs according to
the number of staves, or shafts in the loom, and the position of the hook or catch
attachment for the strap, as well as the connecting cords of the levers, and healds
staves may be adjusted on the said levers as required.
Having now particularly described, and ascertained the nature, and object of our
said invention, and in what manner the same is to be employed we declare that
what we claim is :-
The general construction, combination and arrangement of parts constituting our
improved appliance for operating the healds of looms for weaving, substantially as
herein described, and as illustrated by the annexed drawings.
Dated this 22nd day of May 1888.
CHARLES HAHLO.
CHARLES EDWARD LIEBREICH.
THEOPHILUS HANSON.
By their Agent, Walter Brierley,
Town Hall Buildings, Halifax.