Improvements in Jacquard Mechanism for Operating the Shed and Shuttle Boxes of Looms for Weaving.
Year: 1891

page_text: Date of Application, 4th May, 1891
Complete Specification Left, 4th Feb., 1892-Accepted, 5th Mar., 1892
PROVISIONAL SPECIFICATION.
Improvements in Jacquard Mechanism for Operating the Shed and
Shuttle Boxes of Looms for Weaving.
I, EDWARD HOLLINGWORTH, of 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 Jacquard mechanism of looms for weaving,
but the invention is more specially applicable to the Hollingworth & Knowles fast-
running looms.
The object of this my present invention is to dispense with the chain and bowls
hitherto used for operating the vibrating levers and gear cranks employed in this
class of loom for placing the said gear cranks or vibrating wheels into gear with
one or other of two continuously revolving cylinder gears, which through the
intervention of connecting rods and jack levers, operates the "shed" and the
shuttle boxes in order that they may perform their well known functions.
According to my present invention the free end of each vibrating lever is
provided with a hinged toe or finger, underneath which is arranged a pegging
cylinder provided with lags and pegs made to operate intermittently by a pegging
wheel and star wheel driven by spur wheels from the reversing or other convenient
shaft of the loom. The pegs on the lags select which of the vibrator levers shall
be operated, and if a peg is present under the toe of the vibrator lever, it is raised
to a given point without lifting the vibrating lever, the joint of the toe being
opened for that purpose, but simultaneously with such upward movement of the toe,
an inclined or wedge shaped locking bar is made to advance by a chain operating a
suitable lever and short connecting rod, in doing which the wedge shaped locking
bar lifts the toe piece, together with its lever and gear crank, placing the latter
into gear with the top cylinder gear, when it effects the purpose intended, and
when a peg is absent from the lags the vibrating lever descends so as to place the
gear crank into gear with the lower cylinder gear which is revolving in the opposite
direction, whereby the motion of the gear crank is reversed. The reciprocating
locking bar, which forms an important part of this invention, both raises the
vibrating levers when they are selected and locks them in that position, and when
the vibrating levers are not raised, the reciprocating locking bar slides onto the
top of the toe-pieces and locks the levers in that position also, thus the locking
bar lifts the vibrating levers and locks them, whether they are in gear with the top
cylinder gear or bottom.
By combining the hinged toe pieces and reciprocating locking bars with
vibrating levers and gear cranks operated by pegging mechanism instead of
pulleys and chains as formerly, a safe, compact, and reliable Jacquard mechanism is
produced; whilst the wear and tear of the parts is greatly reduced.
Instead of employing lags and pegs for lifting the toe pieces of the vibrating
levers, any well known form of perforated card or other known form of apparatus
may be used for the same purpose.
1
of Man 1901
TASKER & CROSSLEY,
Huddersfield, Agents.

page_text: COMPLETE SPECIFICATION.
Improvements in Jacquard Mechanism for Operating the Shed and
Shuttle Boxes of Looms for Weaving.
I, EDWARD HOLLINGWORTH, of 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 :-
My invention has reference to the Jacquard mechanism of looms for weaving, but
the invention is more specially applicable to the Hollingworth & Knowles fast
running looms.
The object of this my present invention is to dispense with the chain and bowls
hitherto used for operating the vibrating levers and gear cranks employed in this
class of loom for placing the said gear cranks or vibrating levers into gear with one
or other of two continuously revolving cylinder gears, which through the inter-
vention of connecting rods and jack levers, operates the shed and the shuttle boxes
in order that they may perform their well known functions.
In order that my improvements may be more readily understood I will refer to
the accompanying sheets of drawings illustrative thereof, wherein
Fig. 1 is elevation of such parts of Jacquard mechanism as is necessary to
illustrate my invention and
Fig. 2 is an enlarged detail of the improvements.
A represents the top rail of the loom to which is bolted other framework B
employed to carry and support the gearing and other parts. C and D represent two
continuously revolving cylinder gears, and E are gear cranks which are placed into
gear with the upper and lower cylinder gears according to selection. These gear
cranks are carried by vibrating levers F supported on a rod G, the said gear
cranks being also attached to one end of a connecting rod H which are also
connected to the jack levers I, which jack levers are oscillated backward and
forward by the intermittent ro ary motion of the gear cranks as they are from
time to time revolved by the cylinder gears C and D, all of which parts however
form no part of my invention. The vibrating levers F have hitherto been raised
by a bowl or little pulley, but according to my invention, I raise the said vibrating
levers by pegs in the following manner :--The free end of each vibrating lever F is
provided with a hinged toe or finger J, underneath which, is arranged a pegging
cylinder K provided with lags a and pegs b, the said cylinder being made to
revolve intermittently by a pegging wheel L and star wheel M, the former of
which, is driven continuously by the spur wheel N (shewn in dotted lines) from a
wheel N' on the reversing shaft o, or from any other convenient shaft of the loom.
The pegs b on the lags a select which of the vibrating levers shall be operated and
if a peg is presented under the hinged toe J of the vibrating lever, the said hinged
toe is raised to a given point, without lifting the vibrating lever, the joint of the toe
being open for that purpose as indicated in the drawing in Fig. 2, one of the pegs b
shewing in dotted lines how the toe can be raised without any upward movement of
the vibrating lever and simultaneously with such upward movement of the toe, an
inclined or wedge shaped locking bar P is made to advance by a cam Q on the
reversing shaft O operating the lever R and short connecting rod S connected to
the locking bar, such forward movement of the said locking bar forcing its way under
the toe J, which is thereby raised and with it, the vibrating lever and gear
crank E whereby the latter is placed into gear with the top revolving cylinder C,
when the said gear crank is reversed operating the jack lever accordingly, and
performing the function required; but when the peg b on the pegging cylinder K
is absent, the vibrating lever descends, allowing the gear crank E to fall into
contact with the lower revolving cylinder D, which is revolving in the opposite
direction to the top cylinder, whereby the motion of the gear crank is reversed,

page_text: and the jack lever operated in the opposite direction. The spiral spring T shewn
in Fig. 1 is intended to withdraw the locking bar from under the hinged toe Jat
each revolution of the loom. It will be apparent that the pegs do not lift the full
weight of each vibrating lever F but only the hinged toe, the lever itself being
raised by the advancing locking bar P, which locking bar, raises the vibrating
levers after selection and locks them in that position and when the toe of the
vibrating levers are not raised, the advancing locking bar slides on to the top
of the hinged toe pieces and locks the levers in that position also, thus the locking
bar lifts the vibrating levers and gear cranks and also locks them whether they are
in gear with the top cylinder or the bottom one. By combining the hinged toe
pieces and the reciprocating locking bar with vibrating levers and gear cranks
operated by pegging mechanism, instead of pullies and chains as formerly, a safe
and compact reliable Jacquard motion is produced, whilst the wear and tear of the
parts is greatly reduced and as the pegs on the lags only lift the hinged toe
piece and which is made light for the purpose, very little wear takes place on those
parts.
Instead of employing lags and pegs for lifting the toe pieces of the vibrating
levers, any well known form of perforated card or other apparatus may be used for
the same purpose.
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
claim is :-
Firstly. In Jacquard apparatus of looms the combination with the vibrating
levers carrying a gear crank of a hinged toe piece, which can be raised by pegging
mechanism, independently of the vibrating lever, for purposes and in manner
described.
Secondly. In Jacquard apparatus of looms employing gear cranks and vibrating
levers, having a hinged toe piece raised hy pegging mechanism independently of
the vibrating lever the combination therewith of the locking bar P all arranged
and operated as described.
Dated this 3rd day of February 1899
TASKER & CROSSLEY,
Huddersfield, Agents.