also for Raising and Lowering the Shuttle Boxes in Looms for Weaving.
Year: 1885

page_text: also for Raising and Lowering the Shuttle Boxes in Looms
for Weaving.
i
I, CHARLES BEDFORD of Birstall Yorkshire, Machine Shop Manager do hereby
declare the nature of my invention for "IMPROVED MACHINERY FOR RAISING AND
LOWERING THE HEALDS, AND ALSO FOR RAISING AND LOWERING THE SHUTTLE
BOXES IN LOOMS FOR WEAVING to be as follows:-
"
My Invention has reference to mechanism to be employed for giving a positive
up and down motion to the healds, and 'also for giving a positive up and down
motion to rising and falling shuttle boxes in looms for weaving.
For the purpose of carrying out my invention I employ for each heald two
horizontal hooked bars, one end of each bar being connected to a toothed segment,
which segment is in gear with another segment, or half wheel-This half wheel is
connected to a cranked horizontal bar placed at a position above the half' wheel,
the opposite end of such crank bar being connected to a 1 shaped lever, or other
suitable shape to which the cords or chains of the heddles are attached, and in
order therefore to give necessary oscillatory motion to the segments, the ordinary
reciprocatory bars are employed actuated by eccentric, or other means from the
crank shaft in such manner that as the said bars reciprocate, one or other of the
hooked horizontal bars are drawn backward and forward causing the segments to
oscillate thereby, consequently raising and lowering the healds positively.
"
"
In order to determine which of the hooked bars shall be drawn backward or
forward, the said hooked bars are pushed in and out of contact with the recipro-
catory bar by jacquard needles or other pegging mechanism, and in order to prevent
the healds from descending by their own weight when the cranked bar has got
over the centre I place double notches on the upper notched horizontal bar, so
that its movement in both directions is determined by the reciprocatory bar, one
of such notches however is shorter than the other, so as to allow it to be disengaged
from its bar when necessary, and this is done by the forward end of the said bar
coming into contact with a wedge, or other inclined projection.
-
So far I have only described my improved mechanism for the purpose of
operating the healds, but the same mechanism is also employed for raising and
lowering the shuttle boxes, and this is done by connecting the cranked bar or the
☐ shaped lever by pulleys, levers, and chains to the shuttle boxes, by this means
the same segment and levers actuate both the healds and shuttle boxes.
Dated the 17th day of dust 100%

page_text: Improved Machinery for Raising and Lowering the Healds, and
also for Raising and Lowering the Shuttle Boxes in Looms
for Weaving.
I, CHARLES BEDFORD of Birstall, Yorkshire, Machine Shop Manager do hereby
declare the nature of my invention for "IMPROVED MACHINERY FOR RAISING AND
LOWERING THE HEALDS, AND ALSO FOR: RAISING AND LOWERING THE SHUTTLE
BOXES IN LOOMS FOR WEAVING," and in what manner the same is to be per-
formed, to be particularly described and ascertained in and. by the following
statement:-
My invention has reference to mechanism to be employed for giving a positive
up and down motion to the healds, and also for giving a positive up and down
motion to rising and falling shuttle boxes in looms for weaving.
Such being the nature and object of my invention I will now proceed to describe
the same more fully, and for that purpose make reference to the accompanying
sheets of drawings illustrative thereof, wherein Fig. 1 is end view of loom, and
Fig. 2 back view.
I will first describe the means and method I employ for raising and lowering
the shuttle boxes, and the manner of selecting any special box, and also the means
employed for determining how far such box shall be moved up or down.
1 is the loom framing, 2 the shuttle boxes, supported by the bracket 3, attached
to the top of a vertical rod surrounded by the spiral spring. 4 is the crank shaft,
and 5 the tappit or low shaft, both arranged in the ordinary manner. Upon the
tappit shaft 5 is an eccentric 6 working within a grooved plate 7 hinged to the
loom frame at 9, which by vertical rod 10 gives an oscillatory motion to the toothed
segment 11; also to pinion wheel 12, to the two racks 13, and to the two cross
bars 14, so that at every revolution of the low shaft 5, the bars 14 have a to and-
fro-motion given to them in opposite directions. 15 are booked bars which hooked
bars (when selected as hereinafter explained) are caused to move backward and
forward by the cross bars 14, in doing which they oscillate the toothed segment 16
binged to the framing at 17. The rocking of the segment 16 gives a rocking
motion to the half wheel 18, and a to-and fro-motion is imparted to the cranked
bar 19 and a pendulous, motion thereby to one of the vertical arms 20 or 21
working upon the shaft 22. The vertical arms 20 and 21 are of different lengths,
and are employed for actuating different boxes-for instance the short arm 20 is
only capable of operating the shuttle boxes to the extent of one box, but the longer
arm 21 is capable of operating the boxes to the extent of two boxes, but when
both arms 20 and 21 are moved together they operate the shuttle boxes to the
extent of three boxes, and this arises in the following manner,
The Drawings shew the shuttle boxes down at the bottom, and the lever 23 has
received the full extent of its notion in one direction (when not operated by the
pegging barrel) the chain 24 attached thereto, and to the plate 25 having all been

page_text: paid out. The bars 20 and 21 are connected together by a chain 26 which passes
around the pulley 27 carried by the lever 23, therefore when it is necessary to
operate the shuttle boxes to the extent of one box, the lever arm 20 is operated,
and the lever 23 receives sufficient motion as to give out or take up the chain 24.
The distance from 22 to 28 is equal to the distance from 28 to 29, therefore if
from 22 to 28 moves one box, 22 to 29 must operate two boxes, but when both
the lever arms 20 and 21' äre'moved to the full extent, it follows that the lever 23
will have given out or taken up sufficient chain as to operate three boxes; as the
drawings illustrate.
The manner of deciding whether one, two, or three boxes shall be raised is
determined by the jacquard mechanism consisting of an ordinary pegging barrel 31
carried by a lever arm 32 hinged at 33. This pegging barrel receives an upward
and downward motion so as to strike the top of the needles 34 by means of rod 35,
bell crank lever 36, and rod 37 operated by the segment 49.
The hooked bars 15 pass through a slot in the needles 34, so that as the said
needles are caused to descend by the pegging barrel, they are thrown out of
contact with the upper reciprocatory cross bar 14 into such a position as to be
caught hold of by the lower reciprocatory bar 14, and the segment 16 operated
thereby.
To prevent the needles rising as soon as the pressure of the pegging barrel is
moved off the top of the said needles, I employ a cross plate 38 fixed on the top
of the hinged rod 39, the edge of which plate holds the needles down until they
are released, and this takes place at the next downward movement of the pegging
barrel, as the cranked end of the lever 40 comes into contact with a. finger 41
projecting from the said plate 38, so that the needles will be raised by the spiral
spring 42 and lift the bar 15.into such a position as to be caught hold of by the
upper cross bar 14, and this goes on according to arrangement of pegging barrel;
if however the shuttle boxes are required to be stationary for any length of time,
the pegging barrel will raise or lower the needles so that the notches on the
notched bar 15 will be clear of the lower or upper cross bars 14 respectively.
In order to partially disengage the hooked bars 15 from either the upper or
lower cross bars 14 I employ wedges 43 and 44, the former of which is employed
to disengage the shorter notch on the upper side of the hooked bar 15 from the
upper cross bar 14 at the end of its forward movement, whilst the latter wedge 44
is employed to disengage the shorter notch on the underside of the hooked bar 15
from the lower cross bar 14 when such bar gets to the end of its backward move-
ment, so as to allow for the return stroke of the cross bars 14 in either direction
without taking the hooked bars with them, if the pegging barrel so determined it.
By the employment of the mechanism above described, an effective, reliable, and
positive rising and falling box motion is attained.
I will now commence to describe the apparatus I employ for raising and
lowering the healds, the mechanism employed being substantially the same as that
described for operating the boxes.
Upon the crank shaft 4 is a cam 45 working in a grooved plate 46, hinged upon
a fulcrum 47 attached to the frame of the loom. This grooved plate by means of
rod 48 operates a toothed segment 49 (see end view Figure 1) which imparts an
oscillatory motion to a pinion 50 for operating racks 51, and 52, and cross bars 52ª
in precisely the same manner as already described for the shuttle boxes..
The reciprocatory cross bars 52ª operate the horizontal bars 15 and give motion
to segment, 53, half wheel-54, cranked.horizontal arms 55, and a rocking motion to
double armed levers 56. This lever 56 carries cords, chains, or straps 57, attached
to one end of the upper heald shaft, the rod 82 connecting the said lever with a
similar lever at, the opposite end of the loom, by, means of which the healds are
raised. The opposite, end, of, the lever 56 is connected by rod 83 to the double
armed lever 84, which is connected by rod 85 to a bell crank lever at the opposite
end of the loom, by both of which levers the healds are lowered.

page_text: Figures 3 and 4 on Sheet 2 of the accompanying Drawings are sections of the
machine shewing the several parts in reverse positions:
-
In order to prevent the healds and boxes from descending at the wrong time, or
by their own weight when the cranked bar 55 has got over the "centre" as shewn
in Fig. 3, I place double notches on the notched horizontal bar 15, so that its
movement in both directions is determined by the reciprocatory bars 14 and 524,
one of such notches however is sborter than the other, so as to allow it to be
disengaged from its bar when necessary, and this is done by the forward end of
the said bar or the "swell " a thereon coming into contact with wedges 43 or 44
respectively, by which means all the parts are rigid and under control until the.
change is made.
By the employment of mechanism as is herein described and shewn on the
Drawings, the healds are positively operated in the same manner as the boxes.
In order to operate the picking sticks so as to throw the shuttle across the loom
at the proper time I make use of a short lever arm 59 mounted on the shaft 22
(see Fig. 2) and to this arm is connected one end of a rod 60. This: rod 60 is
attached to a bell crank lever 61, (see Figures 2 and 5) to one end of which is
attached a vertical rod 62, the bottom end thereof being secured to another bell
crank lever 63 (see Figure 6.) such bell crank lever operating a horizontal sliding
bar 64 carrying fingers 65 and 66 for purposes hereinafter explained. 67 is the
ordinary picking tappit for operating the ordinary picking cone 68 fixed to the
rocking shaft 69, on the same rocking shaft 69 is a lever arm 70 connected to
a vertical rod 71, the bottom end thereof being connected to a lever 72, capable
of sliding to-and-fro on the shaft 73.
On the same shaft are two "shoes" 74 and 75, the former of which is secured
to shaft 73, whilst the latter is placed loosely thereon.
This latter shoe" 75 has a short lever arm 76 cast thereto, to which is
attached one end of a rod 77, the opposite end of such rod being connected to the
lever 78 on the short shaft 79. (see Figures 1. 2. 5, and 6) on which shaft is also
another lever 80, which is connected by strap to the picking stick. As the bell
crank lever 63 is operated by the rod 60, bell crank lever 61, and rod 62 from the
lever 59, the sliding bar 64 is moved endwise in either direction, which by means.
of the fingers 65 and 66 draws the lever 72 to a position above one or other of the
"shoes" 74 or 75 as determined by the pegging barrel. If the lever 72 is moved
over the "shoe " 75 as shewn in Fig. 6, the said lever at the next revolution of
the picking tappit 67 will strike the "shoe" 75, thus depressing the lever 76, and
by means of rod 77 and levers 79 and 80 operating the picking stick. The
"shoe" 74 operates the picking stick at the opposite end of the loom to that just
described, and which is done direct from the shaft 73 by lever 81.
Although I have thought it necessary to describe and shew the manner of
operating the picking sticks, in consequence of the operation of such picking sticks
being determined by the pegging harrel through the medium of a hooked bar 15,
segment 16, half wheel 18, and cranked bar 19, operated in the same manner as
described for raising and lowering the healds and boxes, I would have it understood
that I make no claim thereto.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I declare that what
I do claim is,
Firstly. For operating the shuttle boxes in looms, the employment of the
hooked bar 15, having double notches on the upper and under sides thereof,
segment 16, half wheel 18, and-cranked arm 19 in combination with the vertical
arms 20 or 21, in manner and for purposes substantially as shewn and described.
Secondly. The combination of cranked arm 19, vertical arms 20 and 21,
chain 26, and lever 23 substantially as shewn' and described.
3
3.4
:

page_text: Thirdly. The employment of segment 16, half wheel 18, cranked arm 19 in
combination with lever arms 20 and 21 of different lengths for the purpose of
raising and lowering the shuttle boxes varying distances; substantially as
described.
Fourthly For operating the healds in looms, the employment of the hooked
bar 15, having double notches on the upper and under side thereof, segment 53,
half wheel 54, and cranked arm 55, in combination with the double ended lever 56,
substantially as shewn and described.