Improvements in Mechanism for Operating Drop Boxes and the Healds of Looms for Weaving.
Year: 1887

page_text: Date of Application, 27th Dec., 1387
Complete Specification Left, 27th Sept., 1888
Complete Specification Accepted, 2nd Nov., 1888
Improvements in Mechanism for Operating Drop Boxes and the
Healds of Looms for Weaving.
I GEORGE HERBERT HODGSON of Bee Hive Works, Bradford in the County of
York, Machine Maker do hereby declare the nature of this invention to be as
follows:-
This invention relates to mechanism for purpose aforesaid of the class wherein a
sliding rack is employed for operating a pinion or segment pinion wheel to which is
cast or connected an eccentric, or eccentrics for operating the shuttle box levers and
the heald levers and the object of the invention is to secure the automatic locking
and steadying the box when raised or of the healds when in the raised position.
According to this my said invention the sliding rack consists of a bar toothed along
or draw bars
a portion of its length and which bar receives its motion from "catches"
operated as ordinary, and moves to and fro on rests. The rack terminates at each
end in a larger tooth than those composing the rack proper which gear with the teeth
of the segment pinion, there being provided suitable spaces in the segment for the two
larger teeth. On opposite sides or diameters of the segment wheel are flat surfaces
which correspond with the upper surface of the rack. The pitch of the teeth on the
sliding bar and the teeth-spaces and flats of the segment pinion are such that when
the rack bar moves forward it turns the segment and when having reached the length
of its stroke, the flat place on the segment will be resting on the sliding bar and the
outer tooth of the segment will then be resting upon the top of the larger and outer
tooth of the rack, thus locking the rack and pinion firmly and holding the box or
healds steady until a change is required whereon the slide will move in the opposite
direction, and the segment will take up similar locking position on other end of
the rack.
TL 02nd day of December 1887.
WALTER BRIERLEY,
Town Hall Buildings, Halifax,
Agent for the Applicant.

page_text: Improvements in Mechanism for Operating Drop Boxes and the
Healds of Looms for Weaving.
I GEORGE HERBERT HODGSON of Bee Hive Works, Bradford in the County of
York, Machine Maker, 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 mechanism for purpose aforesaid of the class wherein a
sliding rack is employed for operating a pinion or segment pinion wheel to which is
cast or connected an eccentric, or eccentrics for operating the shuttle box levers and
the heald levers and the object of the invention is to secure the automatic locking and
steadying the box when raised, or of the healds when raised or of the healds when
in the raised position.
According to this ny said invention the sliding rack consists of a bar toothed along
a portion of its length and which bar receives its motion from catches or draw bars,
opesated as ordinary, and by any of the well known means, moves to and fro on rests
and terminates at each end in a larger tooth than those composing the rack proper
which gear with the teeth of the segment pinion, there being provided suitable spaces
in the segment for the two larger teeth. On opposite sides or diameters of the
segment wheel are flat surfaces which correspond with the upper surface of the rack.
The pitch of the teeth on the sliding bar and the teeth spaces and flats of the segment
pinion are such that when the rack bar moves forward it turns the segment and
when having reached the length of its stroke, the flat place on the segment will be
resting on the sliding bar and the outer tooth of the segment will then be resting
upon the top of the larger and outer tooth of the rack, thus locking the rack and
pinion firmly and holding the box or healds steady until a change is required whereon
the slide will move in the opposite direction, and the segment will take up similar
locking position on and opposite end of the rack.
Such being the nature and object of this my said invention, the following is a
complete description of same reference being had to the accompanying drawings in
which
Fig. 1 is a side elevation of the improved locking device applied to the shuttle
boxes.
Fig. 2 is a similar view to Fig. 1 but shewing the segment at the opposite end of
the rack.
The several Figs. on sheet 3 are details drawn to enlarged scale.
According to this my said invention the sliding rack 1 consists of a bar toothed
along a portion of its length 2 and which bar receives its motion from catches or
draw bars 3. operated as ordinary, and by any of the well known means moves to
and fro on rests 4 and terminates at each end in a larger tooth 5 than those
composing the rack proper which-gear with the teeth 6 of the segment pinion 7,

page_text: there being provided suitable spaces 8 in the segment 7 for the two larger teeth 5-5.
On opposite sides or diameters of the segment wheel 7 are flat surfaces 9-9" which
correspond with the upper surface 10-10 of the rack 1.
The pitch of the teeth 2 on the sliding bar 1 and the teeth spaces and flats 9-9
of the segment pinion 7 are such that when the rack bar 1 moves forward it turns
the segment 7 and when having reached the length of its stroke, the flat place 9 on
the segment will be resting on the sliding bar at 10 and the outer tooth of the segment
will then be resting upon the top of the largor and outer tooth 5 of the rack I, thus
locking the rack I and pinion 7 firmly and holding the box or healds steady until
a change is required, whereon the slide 1 will move in the opposite direction, and the
segment 7 will take up similar locking position on other and opposite end of the
rack 1.
The movement of the bar turns the segment 7 one half revolution, or ends 9-9ª
about thereby carrying upwards the crank rod 11 to the position shewn by Fig. 2,
raising the end 12 of the main or shuttle box lever on its fulcrum and bringing
down the shuttle box rod and shuttle boxes one or more boxes as the case may be
according to the movement of the compound eccentrics 15 or other known devices
for moving the boxes or healds, so that the healds or shuttle boxes are securely
locked and firmly held in the required position.
I would have it understood that I do not confine or limit myself to the use of
the mechanism above described to any particular arrangements of racks for operating
the shuttle boxes or healds as it is applicable for locking and holding the boxes
and healds in position.
Having now particularly described and ascertained the nature of my said Inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
The rack 1 having the enlarged teeth 5-5, spaces 10 within and on which the
surfaces 9-9 and segment teeth 6-6 rest and lock the rack 1 and thereby steady
the shuttle box rod and shuttle boxes, or the heald staves in the position to which
they have been moved and set.