AN IMPROVED WEAVING LOOM
Year: 1874

page_text: LETTERS PATENT to Alfred Lacaze, of Vincennes, near Paris, France,
Manufacturer, for the Invention of "AN IMPROVED WEAVING LOOM."-
-
A communication from Louis Jean Baptiste Capon, residing at
Vincennes (Franco).
Sealed the 7th July 1874, and dated the 23rd January 1874.
PROVISIONAL SPECIFICATION left by the said Alfred Lacaze at the
Office of the Commissioners of Patents, with his Petition, on the
23rd January 1874.
I, ALFRED LACAZE, of Vincennes, near Paris, France, Manufacturer,
do hereby declare the nature of the said Invention for "AN IMPROVED
WEAVING LOOM," to be as follows:-
This Invention relates to a construction of loom for weaving by power,
or which can be worked by the foot. It is exceedingly simple; it leaves
the lay or batten free and independent of the pickers when desired, so as
to allow of drawing back the cards, and it permits of weaving if there is
a false movement with the same facility as is the case with an ordinary
loom,

page_text: The Invention may be divided into two parts, which are also applicable
to all ordinary hand looms, and which I proceed to describe separately.
The first part has reference to the movement of the lay or batten
(chasse), and the second to the movement of the pickers or shuttle
drivers.
1st. Movement of the Lay or Batten.-At the lower part of the loom
is a shaft, to each end of which a large bell crank is keyed. To the
upper arm of each bell crank is attached a lever formed with a number
of holes, and jointed at one end to the bell crank, and at the other to the
lay. The other arm of the bell crank is connected with another lever
attached at its end to the vertical cord or chain which is worked by the
pedal. On this cord or chain is a lever which allows the operator to
assist himself with his hand when desired. The movement of the lay
through the working of the parts just described is very simple, and it can
be made independent of the movement of the pickers.
2nd. Movement of the Pickers.-At a suitable position is a longitudinal
shaft carrying at the back a rod formed in two pieces, one of these being
jointed to the other and being free to be lifted when required. On the other
side of the longitudinal shaft are two rods. The shaft carries at its ends
two strong springs, which tend to make it turn on its axis in one direction.
On the upper beam of the lay are two levers, carrying at one of their ends
a nose movable around a hinge. The other end of the levers is in communi-
cation with the pickers by a cord. These pickers are brought to position
by a spring or otherwise, as in ordinary looms. The vertical cord, which
is worked by the pedal as before explained, is connected to a lever, so that
when the operator bears on the pedal this lever meeting the jointed
piece of the [rod on the longitudinal shaft causes the shaft to turn in the
direction contrary to the tendency of the springs before named, the
springs becoming thereby stretched, while the two rods on the other side
of the shaft rise, and in so doing meet the ends of the levers on the beam
of the lay; the nose thereon rises and allows the rods to pass. The
pedal continuing to descend, the lever thereon leaves the jointed rod, the
springs return the shaft suddenly to its former position, while the two
rods in descending meet the nose, which being actuated from the
jacquard has remained raised or lowered, according to the throw to be
given. If, for example, it is the right shuttle, the nose of the right
lever is lowered, and that of the left is raised, the result of which is that
the left rod descends without touching the left lever, and the left picker

page_text: remains in position. On the contrary, the nose of the right lever being
lowered the rod meets the right lever, which oscillates on its centre, and
putting in motion the right picker throws the shuttle. The rod behind
the longitudinal shaft, which is intended to stretch the springs of this
shaft as before explained, has the jointed piece before named. This
piece has near its end a string, which allows of its being lifted and of
being kept lifted by fixing the end of the string. The result of this is
that if things being thus arranged the operator bears on the pedal the
lever does not meet the jointed piece, and the longitudinal shaft therefore
remains in place, and no movement is given except to the pedal cord
and to the loom. As many of the cards can then be drawn back as is
desired, and weaving can proceed as in an ordinary hand loom. The
pickers have another slight movement which is essential, this is, that
they become displaced at the moment of the arrival of the shuttle, so as
to soften the blow of the latter on the picker. For this purpose I attach
a cord to each of the levers, which are on the beam of the lay. This
cord leads from the end of a lever which is in communication with the
mechanism of the loom, and draws the other levers a slight distance, so
as to displace the pickers as above stated, so that at each pick the two
pickers are in motion; that which throws the shuttle is in motion by
the displacement of its lever by the blow of the rods on the nose of the
lowered lever as before described, and the other picker has the slight
movement imparted to it as just explained.
3rd. Driving the Loom by Power.-To drive the loom by power the
pedal is prolonged beyond the frame, and its end is put in connection by
a crank with a plate which is mounted on a shaft carrying a fixed and a.
loose pulley. At each revolution of the fixed pulley the pedal receives
an up-and-down movement analogous to that which it receives from the
foot of an operator.
In order to work the loom by the foot the operator has only to throw
the crank out of gear with the pedal, and to work the pedal as in ordinary

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Alfred Lacaze in the Great Seal Patent Office
on the 22nd July 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ALFRED
LACAZE, of Vincennes, near Paris, France, Manufacturer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-third day of January, in the year
of our Lord One thousand eight hundred and seventy-four, in the thirty-
seventh year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Alfred Lacaze, Her special licence
that I, the said Alfred Lacaze, my executors, administrators, and
assigns, or such others as I, the said Alfred Lacaze, my executors,
administrators, and assigns, should at any time agree with and no
others, from time to time and at all times thereafter during the term
therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "AN IMPROVED
WEAVING LOOM" (a communication from Louis Jean Baptiste Capon, a
person resident at Vincennes, France), upon the condition (amongst
others) that I, the said Alfred Lacaze, my executors or admistrators, by
an instrument in writing under my, or their, or one of their hands and
seals, should particularly describe and ascertain the nature of the said
Invention, and in what manner the same was to be performed, and
cause the same to be filed in the Great Seal Patent Office within six
calendar months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said Alfred Lacaze, do hereby declare the
nature of the said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement thereof, reference being had to the accompanying a
Drawings, that is to say :-
This Invention relates to a construction of loom for weaving by power,
or which can be worked by the foot. It is exceedingly simple; it leaves
the lay or batten free and independent of the pickers when desired, so as
to allow of drawing back the cards, and it permits of weaving, if there is :

page_text: a false movement, with the same facility as is the case with an ordinary
loom.
The Invention may be divided into two parts, which are also applicable
to all ordinary hand looms, and which I proceed to describe separately.
The first part has reference to the movement of the lay or batten
(chasse), and the second to the movement of the pickers or shuttle
drivers.
1st. Movement of the Lay or Batten.-At the lower part of the loom
is a shaft A, to each end of which a large bell crank B is keyed. To the
upper arm of each bell crank is attached a lever C formed with a number
of holes, and jointed at one end to the bell crank, and at the other to the
lay. The other arm D of tho. bell crank is connected with another
lever E, attached at its end F to the vertical cord or chain G, which is
worked by the pedal H. On this cord or chain is a lever I, which allows
the operator to assist himself with his hand when desired. The move-
ment of the lay through the working of the parts just described is very
simple, and it can be made independent of the movement of the pickers.
The arrangement above described is of course applied at cach side of the
loom corresponding with each bell crank B.
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2nd. Movement of the Pickers.-At K is a longitudinal shaft carrying
at the back a rod L formed in two pieces, one of these M being jointed
to the other, and being free to be lifted when required. On the other
side of the longitudinal shaft are two rods N. The shaft carries at its
ends two strong springs, which tend to make it turn on its axis in the
direction of the arrow a. On the upper beam of the lay are two levers
jointed at O, and carrying at one of their ends a nose P movable around
a hinge. The other end q of the levers is in communication with the
pickers by a cord. These pickers are brought to position by a spring or
otherwise, as in ordinary looms. The vertical cord G is connected to a
lever R, so that when the operator bears on the pedal H this lever
meeting the jointed piece M of the rod L causes the shaft K to turn in
the direction contrary to the arrow a, the springs becoming thereby
stretched while the rods N rise, and in so doing meet the ends of the
levers O; the nose P thereon rises and allows the rods N to pass. The
pedal continuing to descend the lever R leaves the rod L, the springs
return the shaft K suddenly in the direction of the arrow a, while the
rods N in descending meet the nose P, which being actuated with the

page_text: aid or the levers by the jacquard has remained raised or lowered
according to the throw to be given. If, for example, it is the right.
shuttle the nose P of the right lever is lowered, and that of the left is
raised, the result of which is that the left rod N descends without
touching the left lever, and the left picker remains in position. On the
contrary, the nose P of the right lever being lowered the rod N meets
the right lever, which oscillates on its centre, and putting in motion the
right picker throws the shuttle. The rod L behind the shaft K, which is
intended to stretch the springs of this shaft as before explained, has the
jointed piece M before named. This piece has near its end a string,
which allows of its being lifted and of being kept lifted by fixing the
end of the string. The result of this is that if, things being thus
arranged, the operator bears on the pedal, the lever R does not meet the
jointed piece M, and the shaft K therefore remains in place, and no move-
ment is given except to the pedal cord and to the loom. As many of
the cards can then be drawn back as is desired, and weaving can proceed
as in an ordinary hand loom. The pickers have another slight movement
which is essential, this is that they become displaced at the moment of
the arrival of the shuttle, so as to soften the blow of the latter on the
picker. For this purpose I attach a cord at d to each of the levers O,
this cord leads from the end of a lever S which is in communication
with the mechanism of the loom, and draws the lever O a slight distance,
so as to displace the picker as above stated, so that at each pick the two
pickers are in motion, that which throws the shuttle is in motion by
the displacement of the lever O, caused by the blow of the rods N on the
nose of the lowered lever as before described, and the other picker has the
slight movement imparted to it from the lever S as just explained.
3rd. Driving the Loom by Power.-To drive the loom by power the
pedal H is prolonged beyond the frame, and its end is put in connection
by a crank with a plate which is mounted on a shaft carrying a fixed
and a loose pulley. At each revolution of the fixed pulley the pedal.
receives an up-and-down movement analogous to that which it receives.
from the foot of an operator.
In order to work the loom by the foot the operator has only to throw
the crank out of gear with the pedal H, and to work the pedal as in
ordinary looms.
And having now described the nature of the aid Invention, and in

page_text: what manner the same is to be performed, I declare that I claim, con-
structing looms for weaving, substantially as herein-before described.
In witness whereof, I, the said Alfred Lacaze, have hereunto set my
hand and seal, this Seventeenth day of July, One thousand eight
hundred and seventy-four.
Witness,
ALBERT CAHEN,
Civil Engineer,
of Boulevard Magenta, 32,
at Paris.
A. LACAZE. (L.S.)