IMPROVEMENTS IN DAMASK-LOOMS
Year: 1880

page_text: LETTERS PATENT to William Robert Lake, of the Firm of Haseltine, Lake,
& Co., Patent Agents, Southampton Buildings, London, for an Invention of
"IMPROVEMENTS IN DAMASK-LOOMS." A communication from abroad by
Johann Ludwig Döhmer, of Crefeld, Germany.
PROVISIONAL SPECIFICATION left by the said William Robert Lake at
the Office of the Commissioners of Patents on the 10th September 1880.
WILLIAM ROBERT LAKE, of the Firm of Haseltino, Lake, & Co., Patent Agents,
Southampton Buildings, London. "IMPROVEMENTS IN DAMASK-LOOMS." [A com-
munication from abroad by Johann Ludwig Döhmer, of Crefold, Germany.]
This Invention relates to damask-looms of the "jacquard" class, and is carried
into practice as follows, that is to say-I provide for each row of lifting wires
two lifting blades, one being at the right hand and the other at the left hand side,
and the lifting wires are provided with two hooks, one at the right hand and the
other at the left hand side. When in their normal position the lifting wires are
pressed towards the right hand side by the springs of the needles, so that a blade
at the right hand side will lie beneath the hook at the right hand side and will
lift the wire, whereas when the needles are pressed backward the wires move to
the left over their vertical position, and their other hooks assume their position
above the blades at the left hand side. Now as the wires are situated above the
blades, either at the left or at the right hand side, all the wires would be lifted if
at each ascending stroke all the blades were raised simultaneously. However this
is not the case and would not answer the purpose. If however the blades were
lifted continually at one side only (either the right or left) the action would
conform to the operation of an ordinary jacquard loom; this however is not the
case with my apparatus, but according to the pattern of the fabric a certain
number of the blades at the right band side remain stationary, while all the other
blades lying on the same side are lifted, also some of the blades lying on the left
hand side are lifted; while all the others on the same side remain at rest. For
instance, if a five-leaved satin is to be made, four fifths of the blades on the right
hand side are lifted and one fifth remain at rest, whereas one fifth of the left hand

page_text: side blades are lifted and four fifths remain stationary. At the following weft
operation other blades, but in the same proportions, are lifted or remain stationary,
as required for the production of five-leaved satin. In such manner the inter-
section for the pattern and the ground is effected without turning the cylinder at
every weft. If the cylinder were not employed, then all the wires would move
towards the right hand side, thus producing a plain satin fabric. The same effect
would be obtained if all the wires moved together towards the left. In this
manner the length of the pattern is considerably enlarged.
It is evident that by this arrangement several wires can be placed upon each
needle, thereby causing the width of the pattern to be increased.
In comparison with the ordinary jacquard this damask-machine has the
advantage of giving greater length and width to the pattern.
The mechanisin for lifting the blades and for causing them to remain stationary
in proper order or succession may be arranged in various manners. The following
arrangement or construction however has the merit of simplicity, that is to say :-
A certain number of lifters which have the appearance of trellis work are arranged
at each side of the machine; for instance, for five-leaved satin there are five of
such lifters at each side. Any suitable mechanism may be employed for raising
these lifters in proper order, so that for every weft there will be one lifted at each
_side. The form of these lifters will always be such that only those blades are
lifted which have their position-above-a-hook of the lifters; the others which are
in a gap of the lifters remain at rest.
-

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said William Robert Lake in the Great Seal Patent Office on the
10th March 1881.
WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London. "IMPROVEMENTS IN DAMASK-LOOMS."
A com-
munication from abroad by Johann Ludwig Döhmer, of Crefeld, Germany.
This Invention relates to damask looms of the "jacquard" class, and is illustrated
in the accompanying Drawing, in which,―
Figures 1 and 2 shew parts of a loom embodying my improvements, with the
weft and warp threads upon the same.
Figures 3 to 6 illustrate the construction of my improved lifters.
I provide for each row of lifting wires b, b, two lifting blades a, a, one being at
the right hand and the other at the left hand side, and the lifting wires b are
provided with two hooks, one at the right hand and the other at the left hand
side. When in their normal position the said lifting wires bare pressed towards
the right hand sido by the springs of the needles, so that a blade at the right hand
side will lie beneath the hook at the right hand side and will lift the wire, whereas
when the needles are pressed backward, the wires move to the left over their
vertical position, and their other hooks assume their position above the blades at
the left hand side. Now as the wires are situated above the blades either at the
left or at the right hand side, all the wires would be lifted if at each ascending
stroke all the blades were raised simultaneously. However this is not the case
and would not answer the purpose. If however the blades were lifted continually
at one side only, either the right or left, the operation would conform to that of an
ordinary jacquard loom; this however is not the case with my apparatus, but
according to the pattern of the fabric a certain number of the blades at the right hand
side remain stationary, while all the other blades lying on the same side are lifted;
also some of the blades lying on the left hand side are lifted, while all the others on
the same side remain at rest. For instance, if a five-leaved satin is to be made,
four fifths of the blades on the right hand side are lifted, and one fifth remain at
rest, whereas one fifth of the left hand side blades are lifted and four fifths remain
stationary. At the following weft operation other blades, but in the same
proportions, are lifted or remain stationary, as required for the production of five-
leaved satin. In such manner the intersection for the pattern and the ground is
effected without turning the cylinder at every weft. If the cylinder is not
employed and all the wires are moved towards the right hand side, a plain satin
fabric will be produced. The same effect will be obtained if all the wires move
together toward the left hand side.
In this manner the length of the pattern is considerably increased.
It is evident that by this arrangement several wires can be placed upon each
needle, thereby causing the width of the pattern to be increased.
In comparison with the ordinary jacquard loom this damask-machine has the
advantage of giving greater length and width to the pattern.
The mechanism for lifting the blades and for causing them to remain stationary
in the proper order or succession may be arranged in various manners. The
following arrangement or construction however has the merit of simplicity and
may be employed with advantage, that is to say:-A certain number of lifters h³,
h³, h, h, of peculiar form, as shewn, are arranged at each side of the machine;
for instance, for the five-leaved satin there are five of such lifters at each side.
Any suitable mechanism may be employed for raising these lifters in the proper
order, so that for every weft there will be one lifted at each side. The form of
hese lifters will always be such that only those blades are lifted which have their

page_text: position above a hook of the lifters; the others which are in a gap of the lifters
remain at rest. The construction of the said lifters is clearly indicated in Figures
3 to 6 of the Drawings, which show lifters to be applied to a loom for weaving
five leaved satin. The alteration in form required for other patterns will be
readily understood
Having thus fully described the said Invention, as communicated to me by my
foreign correspondent, and the manner of performing the same, I wish it understood
that I claim,
First. The arrangement of two blades for each row of lifting wires, the latter
being provided with two hooks, substantially as and for the purposes set forth.
Second. The novel method of operation consisting in lifting the wires according
to the pattern to be produced by lifting a corresponding part of the series of
blades.
Third. The peculiarly formed "lifters" for lifting the blades in the proper order
or succession, substantially as and for the purpose set forth.
In witness whereof, I, the said William Robert Lake, have hereunto set my
hand and seal, this Tenth day of March, in the year of our Lord One
thousand eight hundred and eighty one.

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