Improvements in Driving Mechanism for Looms, Applicable also for Warping, Spinning, Winding, Spooling, and Glazing Machines.
Year: 1888

page_text: Improvements in Driving Mechanism for Looms, Applicable also for
Warping, Spinning, Winding, Spooling, and Glazing Machines.
We CASIMIR JOSEPH DUMOULIN, and JULIEN LAURIOT, both of Lyon in the
Republic of France, Manufacturers, do hereby declare the nature of the said invention
for IMPROVEMENTS IN DRIVING MECHANISM FOR LOOMS APPLICABLE ALSO FOR WARPING,
SPINNING, WINDING, SPOOLING, AND GLAZING MACHINES to be as follows:-
The object of this invention is the instantaneous change of speed of the loom by the
suppression of the pulleys mounted on the main shaft of looms, and substituting
therefor a disk actuated by single or double friction rollers governed by a single
pulley.
In the accompanying drawings
Fig. 1 represents a front vertical projection of a double friction apparatus which is
mounted on the frame of a loom for weaving.
Fig. 2 is a side vertical projection.
Fig. 3 is a horizontal projection.
B, is the main shaft of a loom for weaving.
It is on the end of this shaft in the old method of construction that the two pulleys
(fixed and loose) are placed and for which we substitute the disk E, mounted on this
shaft with a key sliding in a channel or groove.
This disk bears a hub or nave in which an opening or space is made in which a
roller or collar is introduced, this collar or roller as the case may he is in two parts
connected to the disconnecting fork I, oscillating on a support and bearing at its end
a projecting piece, by which the machine is thrown out of gear.
fis a friction roller mounted on an intermediate shaft X', governed by the shaft X,
by means of two cog wheels F¹, F. F, is a friction roller sliding in a slot in the
shaft X, on which the driving pulley G, is mounted.
When a single roller is employed the backward and forward motion of this roller
is produced by a fork with regulating screw, or some equivalent, sliding on an axis
and receiving motion from a screw turning in a support.

page_text: An index is placed between two fixed rings and turns on a smooth part of the
screw, and by its position on a fixed and graduated scale indicates the speed of
the loom.
When two friction rollers are used, each roller is regulated by means of screws in
forked pieces f¹, whose lower ends slide in a channel or groove made in the piece r,
and receive notion from a right and left handed screw, turning in a support L.
The index is worked by a screw threaded part of the screw k, and as before
described indicates the speed of the loom on a plate with graduated scale placed
either above or on the loom.
D
1 1
01
TI
1000

page_text: Improvements in Driving mechanism
LOVED
Warping, Spinning, Winding, Spooling, and Glazing Machines.
We CASIMIR JOSEPH DUMOULIN and JULIEN LAURIOT, both of Lyon in the Republic
of France Manufacturers do hereby declare the nature of the said invention for
"IMPROVEMENTS IN DRIVING MECHANISM FOR LOOMS ALSO APPLICABLE ALSO FOR
WARPING SPINNING WINDING, SPOOLING, AND GLAZING MACHINES" and in what manner
the same is to be performed, to be particularly described and ascertained in and by
the following statement :-
The object of this invention is the instantaneous change of speed of the loom,
by the suppression of the pulleys mounted on the main shaft of looms, and in
substituting therefor a disk actuated by single or double friction rollers governed by
a single pulley.
In the drawings filed with the Provisional Specification Fig. 1 represents a front
vertical projection of a double friction apparatus constructed on the principle of
our invention, which is mounted on the frame of a loom for weaving.
Fig. 2 is a side vertical projection.
Fig. 3 is a horizontal projection.
The same letters of reference indicate like parts shown in the respective
Figures.
B, is the main shaft of a loom for weaving. It is on the end of this shaft in
the old method of construction that the two pulleys (fixed and loose) are placed,
and for which we substitute the disk E, mounted on this shaft, with a key sliding
in a channel or groove.
This disk bears hub or nave, in which an opening or space is made in which
a roller or collar is introduced, this collar or roller as the case may be is in two
parts, connected to the disconnecting fork I. oscillating on a support, and bearing
at its end a projecting piece by which the machine is thrown out of gear.
f, is a small friction roller mounted on an intermediate shaft X¹ governed by
the shaft X, by means of two cog wheels F1, F¹.
F. is a larger friction roller sliding in a slot in the shaft X. on which the driving
pulley G is mounted.
When a single roller is employed the backward and forward motion of this roller
is produced by a fork with regulating screw, or some equivalent sliding on an axis,
and receiving motion from a screw turning in a support.
An index is placed between two fixed rings, and turns on a smooth part of the
screw, and by its position on a fixed and graduated scale, indicates the speed of
the loom.
When two friction rollers are used as shown in the drawings each roller f. F is
regulated by means of screws in forked pieces f¹, whose lower ends slide in a channel
or groove made in the piece r, and receive motion from a right and left handed
screw r¹, turning in a support L.

page_text: The index is worked by a screw threaded part of the screw K, and as above
described indicates the speed of the loom on a plate with graduated scale S, placed
either above or upon the loom.
The advantages to be derived from the use of this system are numerous, as
example the costly and cumbersome material necessitated by the use of pulleys of
different diameters for producing different speeds, is done away with. Unlimited
variations in speed can be effected by a single operative even whilst the loom is going.
The loom can be instantaneously stopped by ungearing the disk from the friction
rollers a millimètre displacement sufficing to effect this. Shortening or lengthening
the belts is unnecessary, which where fixed and loose pulleys are employed is
frequently required.
Less space is occupied in the mill, as the loom can be placed in any position.
The drum transmitting motion to the single pulley can be greatly reduced in
width, which could not otherwise be when a fixed and loose pulley were employed.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what
we claim is
1st. The method and means employed of driving looms, to facilitate the variation
of speed, with a single pulley G, actuating the friction rollers F. f. and disk E,
in conjunction with the shafts X. X¹ and cog wheels F1 F1.
2nd. The method and means employed for regulating the position of the rollers f. F.
by aid of the forked pieces f¹, sliding in a groove in the piece_r, and receiving
motion from a right and left handed screw r¹, turning in a support L.
3rd. The method and means employed for throwing the loom out of gear, by
the slight displacement of the disk E, effected by aid of a projecting piece at the
end of the disconnecting fork, operating on a collar in the nave of the disk.
The whole in the manner and for the purposes herein setforth.
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