Improvements Connected with the Jacquard of Looms for Weaving.
Year: 1888

page_text: PROVISIONAL SPECIFICATION.
Improvements Connected with the Jacquard of Looms for
Weaving.
1, EDWARD HOLLINGWORTH, of Dobcross Ironworks, Dobcross, in the County of
York, Power Loom Maker, do hereby declare the nature of this invention to be as
follows
This invention has reference to the Hollingworth and Knowle's fast running loom,
the improvements consisting in the application thereto of mechanism in connection
with, the jacquard for permitting the Loom to be reversed .or lagged back for the
purpose of finding broken or loose ends of the weft or other causes, the said improve-
ment being of such a character as not to interfere with the ordinary rotary motion of
the chilled segment gears used in this construction of loom.
For the proper operation of the chilled segment gear, it is necessary for such gear
to revolve only in one direction, but yet it is essential that the mechanism for
operating the peg or chain cylinder shall be capable of imparting two motions to the
said chain cylinder the one a forward motion for presenting the requisite pattern to
be woven, and the other an equal but contrary notion for the re-actuation of the
healds while the broken pick is removed, such operation being commonly termed the
process of "lagging back."
To accomplish this end, I employ a long boss or sleeve, onto which sleeve I fix by
setscrews, keys or other well known means the chilled segment gear, so that when the
sleeve revolves the chilled segment gear, revolves with it. Onto the sleeve I fix a
bevel wheel, gearing with a bevel wheel on the top. of an upright shaft driven from
the crank shaft. The sleeve is placed loosely onto a horizontal shaft provided at the
end furthest from the bevel wheel, on upright shaft, with a peg and star wheel motion
or other suitable mechanism for imparting intermittent motion to the chain or peg
cylinder whilst at the other end of the said shaft, I place a clutch box, provided with
a key or feather which enters a corresponding groove, formed in the said horizontal
shaft, permitting the clutch box to be slided endwise on the said shaft. A third
3

page_text: bevel wheel, gearing with the bevel wheel fixed on the upright shaft is placed loosely
on the said horizontal shaft so that when the clutch box is disengaged by an arrange-
ment of levers, from the bevel wheel fixed on the sleeve, and engaged with the bevel
wheel placed loosely on the horizontal shaft, the rotary motion of the said horizontal
shaft is reversed, without altering or changing, or in any way disturbing the direction
of motion, of the chilled gear which is now stationary; by this means I am enabled
to obviate the difficulty hitherto experienced of rotating the chain or peg cylinder or
cylinders in an opposite direction for the purpose of "lagging back," therefore by
my invention when the weaver requires to reverse the motion of the peg or chain
cylinder the clutch box is disengaged from the bevel wheel fixed on the long boss or
sleeve, and placed in gear with the bevel wheel working loosely on the horizontal
shaft, whereby the said horizontal shaft and consequently the said peg or chain
cylinder are caused to revolve in directions opposite to what they did before the
weaver operated upon the clutch box.

page_text: Weaving.
I, EDWARD HOLLINGWORTH, of Dobcross Ironworks, Dobcross, in the County of
York, Power Loom 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 has reference to the Hollingworth and Knowles fast running loom,
the improvements consisting in the application thereto of mechanism in connection
with the Jacquard for permitting the loom to be reversed or lagged back so as to find
broken or loose ends of the weft or for other causes, the said improvement being of
such a character as not to interfere with the ordinary rotary motion of the chilled
segment.gears used in this construction of loom.
For the proper operation of the chilled segment gear, it is necessary for such gear
to revolve only in one direction, but yet it is essential that the mechanism for operating
the peg or chain cylinder shall be capable of imparting two motions to the said chain
cylinder, the one; a forward motion for presenting the requisite pattern to be woven,
and the other an equal but contrary motion, for the re-actuation of the healds while
the broken or faulty pick is removed, such operation being commonly termed the
process of "lagging back."
To accomplish this end, I employ a long boss or sleeve, onto which sleeve I fix by
set screws, keys, or other equivalent means, the chilled segment gear, so that when
the sleeve revolves the chilled segment gear revolves with it. Onto the sleeve, for
the purpose of driving it, I fix a bevel wheel, gearing with a bevel wheel on the top
of an upright shaft, driven from the crank shaft or other convenient rotary part.
The sleeve is placed loosely onto a horizontal shaft, provided (at the end furthest from
the bevel wheel on the upright shaft) with a peg and star wheel motion, or other
suitable mechanism for imparting intermittent motion to the chain or peg cylinder,
whilst at the other end of the said shaft I place a clutch box, having a key or feather
which enters a corresponding groove, formed in the said horizontal shaft, permitting
the clutch box to be slided endwise on the said shaft. A third bevel wheel gearing
with the bevel wheel fixed on the upright shaft, is placed loosely on the said horizontal
shaft so that when the clutch box is disengaged by a suitable arrangement of levers,
from the bevel wheel fixed on the sleeve, and engaged with the bevel wheel placed
loosely on the horizontal shaft, the rotary motion of the said horizontal shaft is
reversed, without altering or changing or in any way disturbing the direction of
motion of the chilled gear; therefore by my invention when the weaver requires to
reverse the motion of the peg or chain cylinder, the clutch box is disengaged from
the bevel wheel fixed on the long boss or sleeve, and. placed in gear with the bevel
wheel working loosely on the horizontal shaft, whereby the said horizontal shaft and
consequently the said peg or chain cylinder, are caused to revolve in directions opposito
to what they did before the weaver actuated the clutch box.

page_text: 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 sheet
of drawings illustrative thereof, wherein Fig. 1 is a representation partly in elevation
and partly in section, of my improved apparatus. A is a vertical shaft driven from
the crank shaft or other source, and has a continuous rotary motion impartel to it,
driving with it the bevel wheel B fixed on the upper end of the said vertical shaft.
C is a horizontal shaft employed for the purpose of "lagging back" when required
to reverse the direction of motion of the peg lag or chain cylinder or other form of
Jacquard mechanism not shown in the drawings. D is the ordinary chilled segment
gear which is secured to the long boss or sleeve E by means of set screws, keys, or
: other mechanical devices. This sleeve or boss runs loosely upon the shaft C, which
sleeve has secured to it a bevel wheel F in gear with the bevel wheel B on the top of
the vertical shaft A. On the said shaft is placed loosely a bevel wheel G, and there
is also on the said shaft a clutch H provided with a key or feather a which fits into a
groove formed in the shaft C. When the clutch H is clear of both bevel wheels F
and G, the shaft C remains stationary whilst the segment gear D will be revolving,
but when the weaver operates the levers J (connected to front of loom, or other
convenient position), so as to bring the clutch H into contact with the bevel wheel F
on the sleeve, such shaft A, together with the sleeve and chilled gear D, will also
revolve together in the proper direction for the chilled gear and chain and peg
cylinder to work the gears I employed to operate the healds, as is common in this
loom; but when the weaver requires to reverse the chain or peg cylinder, for the
purpose
of finding broken ends or picks, the lever J in front of the loom is operated
in the reverse direction so as to remove the clutch H out of gear with bevel wheel F,
but placed into gear with the bevel wheel G, whereby the shaft C is caused to revolve
in the opposite direction to the sleeve E and chilled segment D, consequently the
motion of the chain or peg cylinder is reversed, for purposes herein before mentioned.
When the clutch H is in the position shewn in the drawings, the weaver_can revolve
the shaft C by turning handle K. It will be understood that the sleeve E and chilled
segment gear D are driven continuously by bevel wheel B, and that the shaft () is
only driven by the clutch H when it is put into gear with bevel wheels For Gas
required, the wheel F being the one which operates the parts when the loom is working
properly and wheel G employed only for reversing the parts.
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:
In looms having chilled gears D, the combination therewith of the sleeve E, bevel
wheels F and G, shaft C, and engaging clutch H, all driven as described, and
employed as a combination, for reversing the action of the loom, substantially as
described.