IMPROVEMENTS IN JACQUARD MACHINES
Year: 1878

page_text: PROVISIONAL SPECIFICATION left by Arthur Charles Henderson at the
Office of the Commissioners of Patents on the 12th March 1878. A communi-
cation from abroad by Emile Marie Joseph Carpentier, Mechanician, a person
resident at Paris, in the Republic of France,
ARTHUR CHARLES HENDERSON, of 6, Southampton Buildings, Holborn in the
County of Middlesex, Patent Agent. "IMPROVEMENTS IN JACQUARD MACHINES."
A communication from abroad by Emile Marie Joseph Carpentier, Mechanician, a
person resident at Paris, in the Republic of France.
The object of this Invention is to do away with the cards now used in all kinds
of jacquard machines for reading the pattern to be produced in weaving carpets,
shawls, and tissues of all kinds of shades of various colors, or simply plain.
The principle feature of the Invention consists of a cylinder perforated with a
great number of holes of small diameter arranged in parallel rows, one row of holes
having its succeeding one placed so that the holes in this row come between the
spaces of the first row, and so on in succession; by this means the number of lioles
can be increased, and thus facilitate the action of the system.
The reading is effected on the cylinder by means of the holes with which it is
pierced; for this purpose the holes forming the pattern to be made are plugged with
a gelatinous matter or with spring pins or some equivalent method.
In closing the holes required, the cylinder replaces the cards; moreover, by reason
of the great number of holes with which it is pierced on its periphery, this cylinder
can produce any pattern, no matter what the number of colors comprising it. For
this reason I call it the universal cylinder.
Points or prickers correspond with the holes of the cylinder, and are in
connection with distinct blades, each one acting by a projection on a needle, and
form together what I term the fingerboard of the jacquard. This board then
consists in a certain number of blades (which number is equal to that of the
lifting wires and needles), which receive a pressure from the perforated cylinder
when their prickers fall opposite the plugged holes, and which blades remain
motionless when these prickers fall in the open holes. It will therefore be perceived
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page_text: that the cylinder animated for each beat up with a rectilincar backward and for-
ward motion comes to press the blades of the fingerboard, and causes those blades
to oscillate whose points fall on the closed holes, so that these blades oscillating
repel the corresponding needles by their projections, and these needles throw back
outside the warp threads the lifting wires which are solid with them.
The means employed for imparting the backward and forward motion to the
perforated cylinder consists in slides actuated with a rectilinear backward and
forward movement, and on which are fixed the blocks supporting the axis of the
perforated cylinder. At each backward and forward movement of this cylinder, an
arrangement of ratchets turns it one division to bring opposite the fingerboard a
new row of holes.
The prickers of the blades of the fingerboard are guided by a plate perforated
with small holes, which serves them in an elastic manner as intermediary in their
transmission of motion to the needles of the lifting wires of the jacquard.
The advantages of the Invention arc,―
1st. The suppression of cards, their connection end to end, and leaves only the
reading of the pattern, and doing away with all the tools used in their manufacture.
2. To produce greater precision, as the perforated cylinder being of metal does
not vary with the changes of temperature like the cards, and consequently this
cylinder does not admit of faults in weaving.
3. To produce all the patterns and the most varied colors without changing
the cylinder, the cylinders being capable of bearing a number of shoots equal to
a packet of 500 cards, and even more.
4. To obviate the wear of the cards, since they no longer exist.
The Invention is applicable to all kinds of Jacquard looms, without alteration of
their parts or interfering with the habits of the workmen.