Improvements in and relating to Jacquard Machines.
Year: 1897

page_text: Date of Application, 1st June, 1897
Improvements in and relating to Jacquard Machines.
We, DAVID DOWNIE, Manager, and HARRY DOWNIE, Engineer, both of Glen-
view House, Harrie Brac, Dunfermline, Fifeshire, do hereby declare the nature
of our invention to be as follows:--
This invention has reference to improvements in and relating to jacquard
machines.
According to my improvements I use two parallel frames mounted at distances
apart on a shaft which receives an oscillatory to and fro motion. Each of these
frames are formed of an L or two armed shape, the arms being set at a slight
incline, and are mounted on the shaft at the junction or meeting parts of the arins.
Adjustable bearings are mounted in each of these armis to carry the ends of the
pattern barrels, two barrels being used, one for weaving the centre or body of
cloth, and the other for forming the border, and projecting lugs are formed or
fitted on these frames for supporting the hammers. The oscillatory shaft is
carried on bearing brackets secured to the ordinary lay of machine, and spring
levers are fitted for acting ou sector wheels at the two oscillatory positions of
shaft.
A lever is mounted on shaft and has two wires atinched to same for the attendant
to give the alternate oscillatory motions to shaft. One catch or pawl lever is usea
for turning both barrels, and is formed with a tail piece for keeping it in position
while the frame is being oscillated from the one position to the other.
By this improved method the two sets of jacquard cards are shifted, and an
increased yield of cloth is produced.
CUMPLEIE DIBUIFICATION.
Improvements in and relating to Jacquard Machines.
We, DAVID DOWNIE, Manager, and HARRY DOWNIE, Engineer, both of Glen-
view House, Harrie Brae, Dunfermline, Fifeshire, do hereby declare the nature
of our invention and in what manner the sume is to be performed to be par-
ticularly described and ascertained in and by the following statement, that is
to say :-
This invention has reference to improvements in and relating to jacquard
machines.
And in order that our said invention and the manner of carrying same into
practice may be properly understood we have hereunto appended a sheet of
explanatory drawings in which the same reference letters are used to indicate
Price 8d.1

page_text: corresponding parts in the several figures where shown. Figure 1 is a front view
of the machine showing our improvements applied thereto, and Figures 2 and 3
are side views looking at the right hand end of Figure 1, and showing the pattern
barrels for weaving the centre and cross border of the cloth in reversed positions
respectively, while Figure 4 is a view looking at the opposite side of machine to
that shown in Figures 2 and 3.
Referring to these drawings:-
According to our improvements we use two parallel frames A mounted at
distances apart on a shaft A' which receives an oscillatory to and fro motion.
Each of these frames A are formed of an L or two armed shape, the arms being set
preferably at slightly less than at right angles towards each other, and are mounted
ou the shaft A at the junction or meeting parts of the arms. Adjustable bear-
ings A³ are mounted in each of these armis to carry the ends of the pattern barrels,
two barrels B B being used, one B for weaving the centre or body of cloth, and the
other B for forming the border, and projecting lugs b are formed or fitted on these
frames A for carrying the spring spindles of the hammers . The oscillatory
shaft A' is carried on bearing brackets C₁ secured to the ordinary lay C of machine,
and spring levers or pawls C are fitted for acting on sector wheels C³ at the two
oscillatory positions of shaft A¹.
A lever or crosshead D is mounted on shaft and has two wires or cords D'
attached to same for the attendant to give the alternate oscillatory motions to
shaft A'. One catch or pawl lever is used for turning both barrels BB1 and is
formed with a tail piece c¹ long enough to bear over the barrel for keeping the
pawl lever in position while the frame A is being oscillated from the one position
to the other.
The pawl d is used for reversing or pulling back in the opposite direction to
the pawl c either or both barrels B B for taking back the pattern cards.
In working with these barrels B B either the centre or the border of the cloth
is woven, but only one of these at a time by the usual reciprocating motion, and
the turning of the barrel B or B by the pawl lever c, but when to change from the
one to the other, the lever D is turned and the barrel reversed.
The rollers E E' used for guiding the pattern cards are mounted in brackets E¹
suspended from lay C.
In working with one set of border cards instead of two sets, an ordinary straight
pawl lever would be used to turn the border barrel in the reverse or opposite
direction.
By this improved method the two sets of jacquard cards are shifted, the one
into and the other out of gear and an increased yield of cloth is produced.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is:-
First. In jacquard machines, the method of mounting and reversing the centre
and border barrels, whereby two sets of jacquard cards are shifted, the one into and
the other out of gear substantially as set forth.
Second. In jacquard machines, the arrangement of oscillatory frames and fittings 4
for carrying and reversing two patterns barrels, substantially as herein described
in reference to and shown in the accompanying drawings.
Dated the 24th day of February 1898.
Dated the 24th day of February 1898.
W. R. M. THOMSON & Co.,
96, Buchanan Street, Glasgow, Agents.