Improvements in Mechanism for Operating the Looms.
Year: 1889

page_text: Date of Application, 3rd Sept., 1889
Complete Specification Left, 2nd June, 1890-Accepted, 5th July, 1890
PROVISIONAL SPECIFICATION.
Improvements in Mechanism for Operating the
Looms.
"Drop Boxes" of
I, GEORGE HERBERT HODGSON, of Beehive Works, Thornton Road, 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 operating and locking in position the
drop boxes of looms and comprises the following combination and arrangements of
parts.
On the tappet shaft is a spur wheel driven by pinion from crank shaft and a mangle
wheel the studs on which drive intermittantly a pinion on a stud the latter carries a
long pinion enclosed by a looped rack working in vertical position and having a
pendant arm lower end of which is received in a slot of one end of broken backed
lever and is free to rock on a carrying pin. The motion for the looped racks is
communicated by the broken backed lever and by segments to the shuttle boxes
rod.
The other end of the said lever is connected by screw adjustable link with a toothed
segment (provided with handle or treadle) and gearing with another segment carried
by bracket and cross stud, on latter is a strap eccentric from upper part of strap extends
an adjustable rod on which are carried the shuttle boxes. The segments referred to are
provided with locking pieces and there is a similar device applied to the rim of the
mangle wheel for holding and steadying the box when set to its required position.
The looped racks are put into gear with their driving pinion by means of card or
peg mechanism the pegs of which act on vertical levers the lower ends of which carry
rods jointed at their other ends to presser fingers which act on a projecting part or neb
of a slide piece for moving or changing the position of the rack, the first motion for
which is derived from the tappet shaft on which is a strap eccentric, a rod from the
latter imparts a rocking motion to a vertical arın, from which at right angles thereto
extends a presser bar or finger, which at each revolution of the eccentric by bearing
against the lower ends of the vertical levers referred to presses these back and by
turning them on their hinge pin thereby drawing back their upper end and leaving
the pattern pins (which are horizontal and provided with return spring) to be all out
or clear of the pattern lattices, when the spiral spring connected to the rod acts and
by its pull if there be a hole in the card presses the hinged finger against neb of the
slide piece of the loop rack, but if a blank in the card, then the vertical lever cannot
get forward and there is no charge.
The outer one of the series of vertical levers is provided with a pull catch for acting
on a catch wheel mounted on the pattern barrel by which the latter is turned, there is
a locking device hinged on a stud and lifted at each pick so as to be lowered on one
side or other of the neb of the rack slide piece so as to hold the slides in the position
to which it has been set by the card mechanism.
The looped rack when pressed over so as to engage the teeth on their left side are
returned by means of a spiral spring and the outer ends of the broken backed lever
are rounded so as to be received in and held by recesses or cavities formed in a vertical
spring locking lever thereby to secure the shuttle boxes in the position to which they
have been moved and set.
D
of Santambar 1889

page_text: COMPLETE
SPECIFICATION.
Improvements in Mechanism for Operating the "Drop Boxes" of
Looms.
I GEORGE HERBERT HODGSON of Beehive Works, Thornton Road, 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 operating and locking in position the
drop boxes of looms and comprises the following combination and arrangements
of parts.
a
On the tappet shaft is a spur wheel driven by pinion from crank shaft and a mangle
wheel the studs on which drive intermittantly a pinion on a stud the latter carries a
long pinion enclosed by a looped rack working in vertical position and having
pendant arm lower end of which is received in a slot of one end of broken backed
lever and is free to rock on a carrying pin.
The motion for the looped racks is communicated by the broken backed lever and by
segments to the shuttle box rod.
The other end of the said lever is connected by screw adjustable link with a toothed
segment and gearing with another segment carried by bracket and cross stud, on latter
is a strap eccentric from upper part of strap extends an adjustable rod on which are
carried the shuttle boxes. The segments referred to are provided with locking pieces
and there is a similar device may be applied to the rim of the mangle wheel for
holding and steadying the box when set to its required position.
The looped racks are put into gear with their driving pinion by means of card or
-peg mechanism the pegs of which act on vertical levers, the lower ends of which carry
rods jointed at their other ends to presser fingers which act on a projecting part or neb
of a slide piece for moving or changing the position of the rack.
The outer one of the series of vertical levers is provided with a catch for acting on
a catch wheel mounted on the pattern barrel by which the latter is turned, and a
locking device can be applied thereto.
The looped rack when pressed over so as to engage the teeth on their left side are
returned by means of a spring and the outer ends of the broken backed lever are
rounded so as to be received in and held by recesses or cavities formed in a vertical
spring locking lever thereby to secure the shuttle boxes in the position to which they
have been moved and set.
Such being the nature and object of my 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 my improved mechanism for operating the drop boxes
of looms for weaving.
Fig. 2. is a plan view of a part of Fig. 1. shewing the looped racks, and appliances
connected therewith.
Fig. 3. is a side elevation of looped rack and pinion for operating same.
Fig. 4. is a plan view of Fig. 3.
Fig. 5. is a detail of the segment wheels and appliances connected therewith drawn
to an enlarged scale.
Fig. 6. is a sectional view on line A B of Fig. 6.
According to this my said invention on the crank shaft 1 is a mangle wheel 2 the
studs 3 on which drive intermittently a pinion 4 on a stud 5 the latter carries a long
pinion 6 enclosed by looped racks 7, 7 working in a vertical position and having
pendant arms 8 at their lower ends.
The lower end of each arm 8 is received in a slot, or by pin connected to one end
of a broken backed lever 9 which is free to rock on its carrying stud 10. The motion
from the looped racks 7, 7 is communicated by the broken backed levers 9, adjusting
rod 13. Crank arm 17 and segments 14, 144, 15, 154 (see Figs. 5 and 6) to the shuttle
box rod 16, one end of the broken backed levers 9, being connected by screw adjustable
link 13 with a crank arın 17 fixed on the cross shaft 18 which carries the duplicate

page_text: segments 14, 144, 15, 15ª the segment 14, gearing with a second toothed segment 14
carried by bracket 18 and on the cross stud 19 of the latter is a joint or bracket 20,
and from the upper part of the same extends the box rod 16, on the upper end of
which are the shuttle boxes. The segments 14, 14A 15, 15 are provided with locking
pieces or faces 22, 22 so as to steady and hold in the requisite position the box rod 22
and shuttle boxes and similar locking devices for a like purpose may be applied to the
rim of the mangle wheel 2 if desirable.
$
The looped racks 7, 7 are put into gear with their driving pinion 6, on one side or
the other so as to be raised or lowered by means of card or peg mechanism, the pegs
or fingers 23 of which act on vertical lever 24 free to turn on the fulcrum stud 25,
and their lower ends carry rods 26 jointed to, or pressing at their other ends against
fingers 27 which act on a projecting part or neb of slide pieces 28 for moving or
changing the position of the looped racks 7, 7 which are held in slots in the levers 29
which are drawn forward and pushed backward by the fingers 27 to which they are
attached by the short link 30, or the lever 29 can he pushed by the fingers 23 in one
direction, and when the pressure is removed therefrom be returned to their former
position by means of blade or spiral springs.
The card mechanism is operated by a pull catch 31 carried loosely by the stud 32
on the frame of the loom, the barrel 33 being carried on the arm 34 free to rock on its
fulcrum stud 35 and having a rocking motion imparted to it by the rod 36 attached to
a disc or crank 37 driven from any convenient going part of the loom, and when the
barrel 33 is moved in one direction by the action of the crank 37 then the pull catch 31
moves the ratchett wheel 38 and barrel 33 part of a revolution and changes the
cards' or pattern.
"
When the adjustable link 13 is operated by the broken backed lever 9 it gives by
the crank arm 17 a partial revolution to the cross shaft 18 which operates the
segments 14 which gears with and operates the segment 14" and by the shuttle box
rod 16 lowers, or raises, as the case may be the shuttle boxes, one box. When the
adjustable link 13b is operated by its broken backed lever 9 the segment 15 carried
loosely on the cross shaft 18 is operated and gearing with the segment 15ª lower the
shuttle boxes one more box by means of the link 16 which is attached to the bracket
or joint 20 at the lower end of the shuttle box rod 16, so that by this arrangement of
mechanism three or four shuttle boxes can be readily and effectually operated by simple
and positive mechanism as by varying the distance between the centre of the bracket
or joint 20 and the centre of the pin 17ª more or less movement can be given to the
box rod, and consequently to the shuttle boxes. The link 16ª is attached to the
bracket 20, and the segment 15ª by universal joints so as to allow of free movements
of the parts.
The outer ends 38 of the broken backed levers 12 are rounded so as to be received
and held in recesses or cavities 39 formed in a vertical spring locking lever 40 thereby
the more securely to hold the shuttle boxes in the position to which they have been set.
Having now particularly described and ascertained the nature and object of my
said invention and in what manner the same is to be performed I declare that what
I claim is :-
1. The general construction, combination and arrangement of parts for operating,
and controlling the rising, and falling shuttle boxes in looms for weaving, as herein
described and substantially as illustrated by Fig. 1 of the annexed drawings.
2. The shuttle box rod 16 bracked or joint 20 segment wheels such as 14, 14ª con-
necting link 16ª segment wheel such as 15, 15ª cross shaft 18, and crank arm 17 all in
combination as and for the purpose herein described and substantially as illustrated by
the annexed drawings.