Improvements in and relating to Mechanism for Effecting Changes of the Shuttles in Looms.
Year: 1892

page_text: Date of Application., 13th Feb., 1892
Complete Specification Left, 7th Nov., 1892-Accepted, 4th Feb., 1893
PROVISIONAL SPECIFICATION.
Improvements in and relating to Mechanism for Effecting Changes
of the Shuttles in Looms.
A communication by PAOLO VIGANO, of Triuggio, Lombardy, in the Kingdom
of Italy, Inventor.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for
Foreign Patent Solicitors, 6 Lord Street, Liverpool, & 6 Bank Street, Man-
chester, both in the County of Lancaster and 323 High Holborn in the County of
Middlesex, Civil Engineer, do hereby declare the nature of this invention to be
as follows:-
.
The invention relates to looms in which several shuttles are employed, and in
which the shuttle boxes are adjusted vertically.
The invention will be best understood by aid of the accompanying sheet of
illustrative drawings which shows the invention applied to a four shuttle loom ;
Figure 1 of the sheet in question representing, in side elevation, the parts applied
to the framework of a loom by which the shuttles are changed.
The other figures on the sheet will be hereinafter fully described.
The changing is controlled by a Jacquard movement, the drum i of which carry-
ing the cards is seen in Figure 1, s being the hook which causes the drum to turn by
means of a ratchet wheel mounted on the axle of the latter, as in other looms where
the shuttles are changed. (This ratchet wheel is not shown in the drawing.)
The alternate ascensional movement of the hooks whereby the drum i rotates on
its axis, is effected by the eccentric L causing the lever m to oscillate around the
fixed centre o, the lever m in its turn and by means of the little rod p causes the
bell cranked lever 7 to oscillate, the latter being centred at /² and imparting a to
and fro motion to the rod r connected with the hook s.
The essential part of this invention consists in the action of the two angle or bell
crank levers d d'ee which are both pivoted on the same centre H. It is these
levers which cause the shuttles to be changed in either one direction or the other
according to whether the levers in question rest with their longest arms at one end
or the other of two slots in the plate z parallel to the plane of Figure 1, and
situated in the vertical planes of oscillation of the two levers d d and e e.
plate z is attached to the loom framework by the lower arm z¹ and the length of
the above named slots depends on the extent of the vertical movement of the
shuttle boxes.
The
Above each of these slots, arched pieces, provided with indentations f and gat
their extremities, are applied by means of spring screws. The upper ends of the
longest arms of the levers d d ee rest in these indentations when the latter have
come to the end of their travel on either the right or left hand side.
The swing bar c, actuating at c¹ the crutch B, which acts on the box with four
compartments A to cause it to rise or sink, is attached at c¹ and at c'll respectively
to the extremities of the shorter arms of the levers d de e oscillating on H. As
d de e do not stop in an intermediate position but pass with the upper extremity
of their longer arms directly from the position to the position g or vice versa, the
swing bar c will occupy alternately one of the four positions shown in the Figures 2
to 5 on the drawing, that is to say-
I. The two upper extremities of d d e e are on the left (Figure 2) at ƒ (Figure 1);
then the two shorter arms of the same levers are in line at the same right hand
point; d is below, e above, c¹¹ is also below and the crutch B is at the lower
extremity of its course and presents the first shuttle to the action of the picker.

page_text: II. The upper extremity of dis on the left (Figure 3) at f (Figure 1), and
that of ee on the right at g (Figure 1) the swing bar c is in a horizontal position
(elele Figure 3) and the crutch B presents the second shuttle to the action of
the picker.
III. The positions of d d and ee are inverted (Figure 4) the upper extremity
of ee is at the left at f (Figure 1) and that of d d at the right at g (Figure 1);
the swing bar c is still situated horizontally and the crutch B presents the third
shuttle.
IV. In the fourth position (Figure 5) the two levers d d ee have both their
upper extremities on the right side, that is to say at g (Figure 1). The shorter.arm
of d d is turned upwards, the shorter arm of ee is turned downwards, and these two
arms are aligned at the same right point which coincide with the direction of the
swing bar c, the extremity c¹ of which is in the highest position, in such a way that
the crutch B presents the fourth shuttle to the picker.
There yet remains to be described the manner the levers d d e e are actuated by
the chain of cards on the drum i. Corresponding to the half of the longer arms of
the two levers d de e there are pivoted the two catches t u which, by reason of
their weight, tend to rest on a peg arranged on the lower extremity of the lever m.
These catches are provided with two projections; by means of the lower one of
these, the lower half of the lever m in oscillating from left to right tends to push
the longer arms of the levers d d e e towards the right extremity of the slot in the
plate z. The lower pointed extremity of the lever q when oscillating in a contrary
direction to that of the lower arm of m acts on the upper projection of the two
catches t and u, and tends to push the longer armis of the levers d de e towards the
left extremity of the slot in the plate z. Two bars & the front one of which alone
is visible on the drawing, share the ascending, alternating motion of the actuating
mechanism of the hooks and have at their lower extremities weights V. The
bars bent at the top, rest in the pattern cards carried by the drum i. If the card
employed has two holes, the bars with their counter-weights V, do not
encounter any obstacle, and descend resting on the shorter arms of the two
catches tu raising their longer arms, and causing the upper projections of these
catches to engage with the terminal point of the lever q, the effect of which' is
to move the longer arms of the two levers d de e towards the left extremity of
the slot in the plate z and consequently to cause the first shuttle (Figure 2) to
come into action.
If, on the contrary, the card only has a single hole, only a single bar s¹
descends, and only a single catch is actuated, the longer arm of which is raised
and pushed in the manner above described. According to whether the hole is at
the right or the left, the lever d d or the lever e e is moved. The arrangement
of the holes in the cards is shown in Figures 6 to 9.
The card of Figure 6 corresponds to the position of the levers d d e e in
Figure 5, and to the coming into action of the fourth shuttle.
The card of Figure 7 corresponds to the position of levers d d ee of Figure 4
and to the coming into action of the third shuttle.
The card of Figure 8 corresponds to the position of levers dd ee in Figure 3
and to the coming into action of the second shuttle.
Finally, the card of Figure 9 corresponds to the position of the levers dd ee
in Figure 2, and to the coming into action of the first shuttle. If it be desired
to employ two threads of the same colour, the same shuttle box must always come
into play, it suffices in that case to cause two cards having the same arrangement
of holes to follow one another.
Dated this 11th day of February 1892.
WM. P. THOMPSON & Co,
Agents for the Applicants

page_text: COMPLETE SPECIFICATION.
Improvements in and relating to Mechanism for Effecting Changes
of the Shuttles in Looms.
A communication by PAOLO VIGANO, of Triuggio, Lombardy, in the Kingdom of
Italy, Inventor.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for
Foreign Patent Solicitors, 6 Lord Street, Liverpool and 6 Bank Street,
Manchester, both in the County of Lancaster and 323 High Holborn, in the
County of Middlesex, Civil Engineer, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :-
The invention relates to looms in which several shuttles are employed, and in
which the shuttle boxes are adjusted vertically.
The invention will be best understood by aid of the accompanying sheet of
illustrative drawings, which shows the invention applied to a four shuttle loom:
Figure 1 of the sheet in question representing, in side elevation, the parts applied
to the framework of a loom by which the shuttles are changed.
The other figures on the sheet will be hereinafter fully described.
The changing is controlled by a Jacquard movement, the drum of which,
carrying the cards, is seen in Figure 1, s being the hook which causes the drum to
turn by means of a ratchet wheel ¹ mounted on the axle of the latter, as in other
looms where the shuttles are changed.
The alternate ascensional movement of the hooks, whereby the drum i rotates on
its axis, is effected by the eccentric L causing the lever m to oscillate around the
fixed centre o; the lever m in its turn and by means of the little rod p causes the
bell cranked lever q to oscillate, the latter being centred at and imparting a to
and fro motion to the rod r connected with the hooks, both the latter being attached
to the same casting (shown shaded in the drawings).
The essential part of this invention consists in the action of the two angle or bell
crank levers d dee, which are both pivoted on the same centre H. It is these levers
which cause the shuttles to be changed in either one direction or the other according
to whether the levers in question rest with their longest arms at one end or the
other of two slots in the plate z parallel to the plane of Figure 1, and situated in.
the vertical planes of oscillation of the two levers dd and ee. The plate z is
attached to the loom framework by the lower arm z', and the length of the
abovenamed slots depends on the extent of the vertical movement of the shuttle
boxes.
at
Above each of these slots, arched pieces, provided with indentations f and
their extremities, are applied by means of spring screws. The upper ends of the
longest arms of the levers dd ee rest in these indentations when the latter have
come to the end of their travel on either the right or left hand side.
The swing bar c, actuating at c" the crutch B, which acts on the box with four
compartments A to cause it to rise or sink, is attached at c' and at cll respectively
to the extremities of the shorter arms of the levers ddee oscillating on H.
Asd dee do not stop in an intermediate position, but pass with the upper extremity
of their longer arms directly from the position to the position g, or vice versa, the
swing bar e will occupy alternately one of the four positions shown in the Figures 2
to 5 on the drawing, that is to say-
I. The two upper extremities of dd ee are on the left (Figure 2) at ƒ (Figure 1);
then the two shorter arms of the same levers are in line at the same right hand
point dis below, e above, c is also below and the crutch B is at the lower
extremity of its course and presents the first shuttle to the action of the picker..
II. The upper extremity of dd is on the left (Figure 3) at ƒ (Figure 1), and
H

page_text: that of ee on the right at g (Figure 1) the swing bar c is in a horizontal
position (ece, Figure 3) and the crutch B presents the second shuttle to the
action of the picker.
g
III. The positions of d d and ee are inverted (Figure 4), the upper extremity
of ee is at the left at f (Figure 1) and that of d d at the right at 9 (Figure 1): the
swing bar c is still situated horizontally, and the crutch B presents the third
shuttle.
IV. In the fourth position (Figure 5) the two levers dd ee have both their
upper extremities on the right side, that is to say, at g (Figure 1). The shorter
arm of d d is turned upwards, the shorter arm of ee is turned downwards, and these
two arms are aligned at the same right point which coincides with the direction of
the swing bar c, the extremity c¹ of which is in the highest position, in such a way
that the crutch B presents the fourth shuttle to the picker.
There yet remains to be described the manner in which the levers ddee are
actuated by the chain of cards on the drum i. Corresponding to the half of the
longer arms of the two levers ddee there are pivoted the two catches tu, which,
by reason of their weight, tend to rest on a peg arranged on the lower extremity of
the lever m. These catches are provided with two projections; by means of the
lower one of these, the lower half of the lever m, in oscillating from left to right,
tends to push the longer arms of the levers dd ee towards the right extremity of
the slot in the plate 2. The lower pointed extremity of the lever q, when
oscillating in a contrary direction to that of the lower arm of m, acts on the upper
projection of the two catches t and u, and tends to push the longer arms of the
levers dd ee towards the left extremity of the slot in the plate z. Two bars s', the
front one of which alone is visible on the drawing pass through holes in the casting
(shown shaded) and by means of the lugs formed thereon share the ascending,
alternating motion of the actuating mechanism of the hooks and have, at their
lower extremities, weights V. The bars s¹, bent at the top, rest in the pattern
cards carried by the drum i. If the card employed has two holes, the bars s', with
their counterweights V, do not encounter any obstacle, and descend resting on the
shorter arms of the two catches t u, raising their longer arms, and causing the upper
projections of these catches to engage with the terminal point of the lever
effect of which is to move the longer arms of the two levers dd ee towards the left
extremity of the slot in the plate z, and, consequently, to cause the first shuttle
(Figure 2) to come into action.
the
If, on the contrary, the card only has a single hole, only a single bar s descends,
and only a single catch is actuated, the longer arm of which is raised and pushed in
the manner above described. According to whether the hole is at the right or the
left, the lever dd or the lever ee is moved. The arrangement of the holes in the
cards is shown in Figures 6 to 9.
The card of Figure 6 corresponds to the position of the levers d d ee in Figure 5,
and to the coming into action of the fourth shuttle.
The card of Figure 7 corresponds to the position of levers d dee of Figure 4 and
to the coming into action of the third shuttle.
The card of Figure 8 corresponds to the position of levers dd ee in Figure 3,
and to the coming into action of the second shuttle.
Finally, the card of Figure-9 corresponds to the position of the levers ddee in
Figure 2, and to the coming into action of the first shuttle. If it be desired to
employ two threads of the same colour, the same shuttle box must always come into
play, it suffices, in that case, to cause two cards having the same arrangement of
holes to follow one another.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, as communicated to me by
my foreign correspondent, I declare that what I claim is :-
1. In looms in which four shuttles are employed, and in which the shuttle boxes

page_text: (1) The changing of the shuttles produced by a couple of levers turning on a
common centre and connected by means of the extremities of their shorter arms
with a swing bar operating the crutch carrying the shuttle box.
(2) The operating of the levers referred to in Claim (1) by oscillating catches
having two projections which cause the above named levers to move from right to
left and vice versa, so as to effect the changes of the shuttles, these movements being
controlled by bars operated by a Jacquard movement.
Dated this 5th day of November 1892.
WM. P. THOMPSON & Co.,
Agents for the Applicant.