Improvements in Jacquard Machines.
Year: 1897

page_text: [Communicated from abroad by LA SOCIETE L. GLORIEUX ET FILS, of 19, Rue
Cambon, Paris, in the French Republic, Manufacturers.]
Improvements in Jacquard Machines.
I, WILLIAM EDWIN HEYS, of 70, Market Street, Manchester, in the County of
Lancaster, Patent Agent, do hereby declare the nature of this invention, and in
what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:
The improvements in jacquard machines for power looms to which this in-
vention relates are illustrated by the accompanying drawings to which reference
will hereinafter be made.
In these drawings, Figure 1 represents a vertical sectional elevation, and
Figures 2 and 3, side elevations of the cylinder motion drawn to a larger scale.
This double lift machine has two griffes, one lifting at each odd pick of figuring
weft and serving, with its knives s, the hooks e, and the needles a, for the inter-
weaving of the odd picks of figuring weft threads, and the other griffe A', lifting
at each even pick for the interweaving of the even picks. The arrangement of
the knives and hooks shewn by the drawings is given by way of example and may
be modified by relatively arranging them in any useful manner whatever.
C
Upon each of the cords i, there is a balance weight r, under the hole plate U.
Each group of neck cords n, is tied at o and divided into two branches o¹ 02, one of
which branches is attached to one of the hooks and the other branch to one of the
hooks c through the intermediary of the cords ii and balance weights rr, in such
a manner that each group of neck cords n is controlled, for the odd figuring weft
picks by the griffe A and for the even picks by the griffe A¹. The branches o¹ og
are guided by the bottom hole plate P, and the cords o, by the bottom grill G.
The bars of the upper grill support the returned tails of the hooks which form
springs, and a supplementary bar V1 is arranged upon the griffe A' in such a
manner as to prevent the tail of the first hook in A¹ from touching the last knife
in the griffe A, but the use of this supplementary bar may be avoided by increasing
the distance between the two griffes.
Motion can be given to the griffes and to the cylinder by any of many known
means.
The cylinder C beats each of its faces twice consecutively against the needle
plate, this being provided for by means of a mechanical connection between the
of the fork T, and a nib 2 fixed upon the lifter R of the griffe A, (Figures 2
and 3). This will be more fully described further on.
tail
It will be seen that one single card beating or acting twice for two consecutive
picks of figuring weft, realises an economy of fifty per cent. of the cards employed

page_text: for a single pattern. The odd figuring weft will be read upon that part of the
cards corresponding with the needles a, and the even weft upon the part of the
same card corresponding with the needles a¹.
In this machine, as in the generality of jacquard machines, the cylinder C is
moved away from the needle plate and makes a quarter turn as required. This
turning is effected by the action of the known hook terminating the fork T which
hook acts upon the four angle pivots of the cylinder lantern. When it is. desired
to unweave or to reverse the cylinder it suffices, as is well known, to substitute
for the action of the hook T, that of the lower hook T¹ by means generally adopted.
To keep one face of the cylinder in the same plane for two successive strokes,
it will suffice, to enable the second weft thread to pass, to suspend the action of the
upper hook T, without bringing the lower hook T into engagement. This result
is arrived at in a very simple way and as a consequence of the motion of the two
griffes A A', by connecting the end t¹ of the fork T, to a nib 2 fixed upon the
lifter R, of the griffe A, either by means of a short cord F or by other equivalent
means such as a chain or wire.
The length of the connection F, or the distance between t¹ and 12 is calculated
upon the basis of the amount of travel of the griffe.. In Figure 2 the griffe is
shewn in its highest position, and, the cylinder having beaten for the first pick
of weft, it is necessary for the traversing of a second weft thread that the lifter R
in descending to the bottom should carry with it the cord F which thus compels
the fork T to turn about its pivot t. The result is an upward movement of the
hook T which can then no longer act upon the lantern of the cylinder. The
hook T also has then no power to act upon the lantern.
Figure 2 gives the position of the fork at the first pick of the figuring weft, and
Figure 3, that of the fork and the cylinder at the second pick.
It will be clear that if for any reason the cylinder C is bound to beat for each
pick of the figuring weft, and to apply different cards against the needles a and
a respectively, it will suffice to suppress the cord F. In this case the odd card
will be read only for the parts corresponding to the needles a, and the even cards for
the needles a¹.
There results from the hereinbefore described arrangements, an increase of
speed, a smoother motion for the harness and a facility for crossing the warp
threads inasmuch as one group of neck cords n, arranged to lift for several con-
secutive figuring picks, is found at the middle of its descent and is there engaged
by the other griffe without shaking and with only then one half of the litt to
complete.
The proper motion of each griffe is moreover made slower notwithstanding the
increase in the speed of work, inasmuch as it acts only at alternate picks of figuring
weft. The less abrupt movement permits the work to be accelerated without unduly
wearing the harness and the warp.
In the drawings, the two griffes are represented at mid stroke and, for the sake
of clearness, with only six knives each and with only one hook to each knife. It
will however be evident that any necessary number of knives and hooks may be
employed.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed; as communicated to me by
my foreign correspondents, I declare that what I claim is:-
1. In a jacquard machine, two griffes one of which being raised for odd picks
of figuring weft serves with its knives, hooks and accessories to lift the necessary
warp threads for producing the pattern by the odd weft threads and the other being
similarly raised for lifting the warp threads for producing the pattern by the even
weft threads, constructed and operated substantially as herein before described
and as illustrated by the accompanying drawings.
2. In a jacquard machine a cylinder C operated to beat against the needle

page_text: plate twice for two consecutive picks of figuring weft substantially as and by
the means hereinbefore described with reference to the accompanying drawings."
Dated this 27th day of September
A D 18
W. E. HEYS & SON,
Agents for the Applicant.