Improvements in Drop Box Looms.
Year: 1891

page_text: Date of Application, 7th Jan., 1891
Complete Specification Left, 7th Oct., 1891-Accepted. 7th Nov., 1891
PROVISIONAL SPECIFICATION.
Improvements in Drop Box Looms.
We CHARLES HAHLO, CHARLES EDWARD LIEBREICH. both of Mill Street
Bradford Machine Makers and Merchants and THEOPHILUS HANSON of Mill
Street, Bradford aforesaid Manager, do hereby declare the nature of this invention
to be as follows:-
This invention consists of apparatus for purpose aforesaid, comprising improved
apparatus for working and turning or working the pattern or card cylinder,
improved apparatus for lifting the boxes, for locking the same in position; and for
turning, or reversing the shuttle box operating mechanism by hand levers.
According to this our invention we mount the card cylinder on a stud at the
front of the loom in connection with which are two pendant levers working on a
fulcrum their upper ends being furnished with pegs for the cards there being also
a lever, by means of a pawl, or catch operates the card or pattern cylinder.
The pendant pattern levers have at their lower end rods which extend to the
back part of the loom and the outer end of such rods are provided with presser or
pusher pieces which act on the end of vertical draw bars for engaging with the
studs on stud plates between which is a compound eccentric connected by a rod
and lever with the spear or shuttle box rod.
On the tappet shaft is an eccentric which at each revolution imparts a rocking
or oscillating motion on its fulcrum to a lever the upper and outer end of which is
divided, forming two prongs the upper ends of which are caused at every revolution
of the shaft to pass under stop or rest pins in the studded disc, this is for the
purpose of ensuring the boxes being held firmly in the position to which they have
been set whilst the pick is made.
There are a pair of bell crank levers mounted on a stud near the studded disc
and eccentric the lower arm of the lever forms an engaging prong so that by
moving such lever or levers on their fulcrum the studded discs and tappets can
readily be reversed by hand so as to bring up any required cell of the shuttle box.
The action is as follows:-The eccentric on the tappet shaft imparts a rocking
motion to the card indicating levers, and if the pin on the upper end of the lever is
met by a blank in the cards the connecting rod and its pusher piece will not reach
and operate the vertical hook or catch lever of the stud disc, but if there is a hole
in the cards the greater amount of motion is permitted to the upper part of the
card levers whilst the lower part having a corresponding further reach will press
against the lower end of the hooked levers and put one or other of them in gear
with the studs of one of the discs, whereon the continued motion of an eccentric on
the tappet shaft will act on the box lever and the latter will be moved as indicated,
meanwhile an eccentric will have rocked the forked lever herein referred to under
the steadying studs and the box will be held firmly in position until the card or
pattern mechanism indicate a change of the pattern.
Dated the 5th day of January 1891.
WALTER BRIERLEY,
Central Chambers, Halifax, Agent for the Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements in Drop Box Looms.
We CHARLES HAHLO, CHARLES EDWARD LIEBREICH both of Mill Street
Bradford Machine Makers and Merchants and THEOPHILUS HANSON of Mill
Street Bradford aforesaid Manager 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 consists of apparatus for purpose aforesaid comprising improved
apparatus for working and turning the pattern or card cylinder, improved apparatus
for lifting the boxes, for locking the same in position, and for turning, or reversing
the shuttle box operating mechanism by hand levers.
According to this our invention we mount the card cylinder on a stud at the
front of the loom in connection with which are two pendant levers working on a
fulcrum their upper ends being furnished with pegs for the cards there being also
a lever which by means of a pawl, or catch operates the card or pattern cylinder.
The pendant pattern levers have at their lower ends rods which extend to the
back part of the loom and the outer end of such rods are provided with presser or
pusher pieces which act on the end of vertical draw bars for engaging with the
studs on stud plates between which is a compound eccentric connected by a rod
and lever with the spear or shuttle box rod.
On the tappet shaft is an eccentric which at each revolution imparts a rocking
or oscillating motion on its fulcrum to a lever the upper and outer end of which is
divided forming two prongs the upper ends of which are caused at every revolution
of the shaft to pass under stop or rest pins in the studded discs this is for the
purpose of ensuring the boxes being held firmly in the position to which they have
been set whilst the pick is made.
There are a pair of bell crank levers mounted on a stud near the studded disc
and eccentric the lower arm of the levers forms an engaging prong so that by
moving such lever or levers on their fulcrum the studded discs and tappets can
readily be reversed by hand so as to bring up any required cell of the shuttle box.
Such being the nature and object of our invention, the following is a complete
description of same reference being had to the accompanying drawings in which
Fig. 1 is an end elevation of a part of a loom having our improvements applied
thereto.
Fig. 2 is a front elevation of card cylinder and pendant levers, drawn detached
from the loom.
Fig. 3 is a back view in elevation of the compound eccentric catch levers, and
stud plates drawn detached from the loom.
Fig. 4 is a side elevation of compound eccentric studs, and stud plates drawn
detached from the loom.
Fig. 5 is a back view of the two pronged fork locking pins and compound
eccentric..
Fig. 6 is an end view of Fig. 5 also shewing the toothed rack guide pin and
guide.
Fig. 7 is a plan view of the pendant levers, rods and pusher or presser pieces.
The remaining figs. are details drawn detached in order to more clearly shew
their construction.
According to this our invention we mount the card cylinder 1 on a stud at the
front of the loom in connection with which are two pendant levers 2, 3 working on
a fulcrum 4 their upper ends being furnished with pegs 6, 6 for the cards there
being also a lever 7 which works on the fulcrum 4 and by means of a pawl, or
catch 8 operates the card or pattern cylinder the lever 7 being connected to and
oscillated or rocked by the eccentric 9 on the tapped shaft 10.
The pendant pattern levers 2, 3 have at their lower ends rods 11, 12 which

page_text: extend to the back part of the loom and the outer or free ends of such rods 11, 12
are provided with presser or pusher pieces 13 which act on the lower ends of
vertical toothed pusher bars 14, 15 for engaging with the studs or stud plates 16, 17
between which plates 16, 17 is a compound eccentric 18 connected by a rod 19 aud
lever 20 with the spear or shuttle box rod 21. On the tappet shaft 10 is an
eccentric 22 which at each revolution imparts a rocking or oscillating motion on its
fulcrum 23 to a lever 24 the upper and outer end of which is divided forming two
prongs 25 the upper ends of which are caused at every revolution of the shaft 10
to pass under stop or rest pins 26 in the studded discs 27, 27 this is for the purpose
of ensuring the boxes being held firmly in the position to which they have been
set whilst the pick is made. There are a pair of levers 28, 28 mounted on a stud 30
and having each a link 29. passed through the top rail of the loom and provided
with handle or knob 32" the lower arm of each lever 28, 28 has a pawl or prong 31
engaging with ratchet wheels 31° so that by means of the handle 32ª the link 29
and lever 28 are moved on their common fulcrum 30 operating the pawl 31 and the
studded discs 27, 27 whereby the compound eccentrics 18 can readily be reversed
by hand so as to bring up in line with the shuttles race any required cell of the
shuttle box the link 29 brings the handle 32ª to the front of the loom to a position
convenient of access without the weaver leaving the front of the loom. At the
upper end of each of the vertical push bars 14, 15 we form racks 32 for the
purpose of engaging with the studs on the stud plates 16, 17 and below the rack 32
and on each bar 14, 15 is a pin or stud 33, 33 which when the racks 32, 32 are
moved so as to engage with the stud on the plates 16, 17 pass on the inside of the
guide pieces 34, 34 and the racks are held in gear with the studs. If however the
racks 32 are not moved as to engage with the studs then the pins or studs 33, 33
will pass on the outside of the guide pieces 34, 34 and the racks are kept clear of
the stud plates 16, 17. When working the pins pass up the inside of the guide 34, 34
and when arriving at the top the racks and levers 14, 15 are moved and the pins or
studs 33 will pass over the top of the guides 34 and down the outside thereby
keeping the racks 32 away from the studs on the plates 16, 17 when descending.
The rising and falling motion is imparted to the push bars 14, 15 and racks 32
by being connected to the lever 35 the latter being free to move on its fulcrum 36
a cam 37 on the tappet shaft 10 acting ou a runner 38 on the lever 35 giving the
necessary motion to the latter, and the lever 35 is an €5 escapement or "broken
back lever which prevents breakage in the event of any of the several parts not
working correctly. At 38" is a spring for balancing the lever 20 spear or box
rod 21 and boxes.
22
The action is as follows:-The eccentric 9 on the tappet shaft 10 imparts by the
connecting rod 38" a rocking motion to the lever 7 and the arm 39 on the latter
moves the arms 2, 3 and the catch or pawl 8 the card indicating levers 2, 3 are
connected by spring with the rod 38 and if the pins 6, 6 on the upper ends of the
levers 2, 3 are met by a hole in the cards the connecting rods 11, 12 and their
pusher pieces will operate the lower ends of the vertical hooks or push bars 14, 15
of the stud disc 16, 17 and move the lower ends of the said bars 14, 15 outwards
and the latter moving on their fulcrum 40 their upper ends and the racks 32 will
move inwards, the pins 33, 33 passing along the inside of the guide pieces 34, 34
and the racks 32 thereby operate on the studs of the plates 16, 17 and turn the
compound eccentric 18 and change the position of the cells of the shuttle box, but
if there is a blank in the cards the pins 6, 6 and levers 2, 3 will not be permitted
to move as far as in case there was a hole whilst the lower ends of the levers 2, 3
having a corresponding shorter reach will not press the ends 13 of the rods 11, 12
against the lower end of the hooked levers or push bars 14, 15 and the pins or
studs 33, 33 will pass along the outside of the guides 34, 34 and thus the racks 32
are kept clear of the stud plates 16, 17 and no change of position of the shuttle
box takes place. One or other of the racks 32 may of course be in gear with the
studs of one of the discs 16 and 17 and the rod 19 will act on the box lever 20 and
the latter will be moved as indicated by the cards meanwhile the eccentric 22 will

page_text: have rocked the forked lever 24, 25 herein referred to under the steadying studs 26
and the box will be held firmly in position until the card or pattern mechanism
indicates a change of the pattern.
The drawing Fig. 1 illustrates four cells in the shuttle box and operating one of
the stud plates 16 in the manner described two cells will be moved; by operating
the stud plate 17 the third cell is in position, and by operating both plates 16, 17
at one and the same time the fourth cell is opposite the shuttle race and vice versa
in opposite direction.
To more effectually steady the disc 27, 27 hollows 27 are formed in their
peripheries and runners 29" (see Fig. 3) rest in these hollows when the discs are
stationary and so prevent the latter moving until required.
Having now particularly described and ascertained the nature and object of our
said invention and in what manner the same is to be performed and carried into
practice we declare that what we claim is.
1. The push bars 14, 15 operated by rods 11, 12 directed by pins 33 and
guides 34 all in combination and as illustrated by annexed drawings and herein
fully described.
2. The forked or pronged lever 24 operated by eccentric 22 the rest pins 26 all
in combination for steadying the boxes in position whilst the shuttle is being
thrown and the beat up of the weft is being effected.
3. The link 29 applied to and in combination with the lever 28 whereby the
engaging prongs 31 are conveniently operated from the front of the loom as
described and illustrated by drawings annexed.
Dated this 5th day of October 1891.
CHARLES HAHLO.
CHARLES EDWARD LIEBREICH.
THEOPHILUS HANSON.
By their Agent, Walter Brierley,
Bank Chambers, Waterhouse Street, Halifax.