An Improved Jacquard Applicable to Twist Lace Machines.
Year: 1888

page_text: Date of Application, 21st June, 1888
Complete Specification Left 20th Mar. 1889-Accepted 15th June. 1889
PROVISIONAL SPECIFICATION.
An Improved Jacquard Applicable to Twist Lace Machines.
I, GEORGE HENRY BURNHAM of Coron Ledieu, Caudry (Nord) France Machinist
do hereby declare the nature of this invention to be as follows:-
Heretofore when making certain fabrics on twist lace machines, either two single
cylinder jacquards or a double jacquard having two cylinders has been employed.
Instead of which I employ one single cylinder jacquard and lift such cylinder by
means of a pair of cams and springs or a pair of cams and counter cams suitably
shaped one cam to lift the cylinder twice in the one motion and the other cam to lift
the double grid twice in the one motion.
By means of a jacquard constructed as above described applied to a twist lace
machine I am enabled to make what is known as Swiss, Swiss double action, Double
action ordinary, and Combination of all sorts without dead motions, at a greater
speed than heretofore.
+000
H. W. GOUGH, C.E.,
COMPLETE SPECIFICATION.
An Improved Jacquard Applicable to Twist Lace Machines.
I GEORGE HENRY BURNHAM of Coron Ledieu, Caudry (Nord) France Machinist
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 :-
Heretofore when making certain fabrics on twist lace machines either two single
cylinder jacquards, or a double jacquard having two cylinders has been employed.
Each jacquard card cylinder being operated by an excentric and the grid lifted
by a cam the grid falling by its own weight or with the aid of a spring. Such
system causes much friction on the excentrics, especially when they had to revolve
twice during two motions of the machine, besides requiring complicated machinery.
My improvement consists in using one jacquard with a special double grid, and
employing special cams and counter cams to work the grid and card cylinder, by
which I am enabled to produce a variety of fabrics.
DESCRIPTION OF THE DRAWINGS.
Figures 1 and 14 show respectively a back view and portion of a side view of a
double grid I employ.
Figure 2 is a sectional view of portion of the grid showing two hooks A and B
those to the left on the upper tier C, and lower tier D, of the lifting blades of the
double grid.
The several cams I employ are shown numbered consecutively 3 to 13 the
motions on each cam being indicated by a plain line numbered at the edge of
the upper cam, and by a dotted line numbered on the lower cam where two cams
are shown together.
When employing my improved grid the whole of the hooks A, B are selected,
according to the punching of the cards so that as the grid rises, some hooks will be
caught and lifted by the blades C of the upper tier, and other hooks those held
clear of the blades will be avoided and left down, or some hooks will be caught by
the blades D of the lower tier, and other hooks avoided and left down.
When making what is called "Combination Swiss fabrics" I employ an ordinary
jacquard provided with a double tier grid having but one string connecting each
077

page_text: needle to each picker, The cylinder being operated by the cam 3, and the double
grid by the cam 4.
66
The movements being as follows:-
"
cam 4
When the carriages pass into the back combs, the cylinder having passed off
cam 3 motion 1" leaves the needles to turn over cam 4 motion 1 the cylinder
presses again cam 3 motion 2" the cam working the grid rises then "
motion 2 the bars having made the necessary traverse, the carriages then enter the
threads, the bobbin bar falls the number of gates necessary according to the fabric
to be made : this bar cam is specially set to let the bar fall then instead of falling
when the carriages have entered the front combs," the double grid falls and all the
pickers go in the threads.
$6
The carriages are now passed into the front combs; the cylinder presses the needles
cam 3 motion 3" and continues pressing while the grid cam rises both tiers of the
double grid higher than the hooks of the needles "cain 4 motion 3." In this motion
I only employ the upper tier C of the double grid.
The rise of the grid operated by the cam when the carriages are in the back
combs lifts the vertical needles three quarters of an inch. I have thus two heights
of grid to jack the threads; when the carriages are in the front combs, the rise of
the grid operated by the cam lifts the vertical needles half an inch.
I am therefore enabled to produce the same fabric as if I employed two jacquards,
the first working double action and the other ordinary action.
To obtain the necessary motions 1 employ a cam 5 and a counter cam 5 to
operate the trucks a and b carried by a lever C to transmit motion to the rods of
the cylinder or double grid.
To make imitation swiss I employ the double grid the cylinder cam 6, and the
grid cam 7 or 13 each having only the motions 1 and 2.
I can also make imitation swiss or combination swiss, with other cams working
the jacquard every motion; I then employ the cylinder cam 8 and the grid cam 9
the rises on the latter cam being three quarters of an inch on one side and half an
inch on the other side.
To make double action ordinary fabric I employ a cylinder cam 8 with a rise of
seven eighths of an inch, and a grid cam 10 with two equal rises of three quarters of
an inch, I do not limit myself to the heights of rises on the cams mentioned as I
make the motions shorter or longer according to the build of jacquard to be
employed.
.
When making ordinary fabric 1 employ the cam 11 to operate the cylinder and
the cam 12 to operate the grid.
I am thus enabled to produce a variety of fabrics with one jacquard where here-
tofore two were required, besides effecting a considerable saving in the reading and
number of cards employed.
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 :-
1. The construction and employment of double tier grids each provided with upper
lifting blades C and lower lifting blades D) operating in combination with a single
jacquard applied to twist lace machines substantially as described with reference to
the accompanying drawings and operating as, and for the purposes specified.
2. The construction and employment of special cams and counter cams to work a
double tier grid in combination with a single jacquard substantially as described and
illustrated in the Drawings annexed.
Dated this Nineteenth day of March 1889.
H. W. GOUGH., C.E,
Agent.