Improvements in or Appertaining to Whip Rolls for Looms.
Year: 1889

page_text: Date of Application, 16th Oct., 1889-Accepted; 23rd Nov., 1889
COMPLETE SPECIFICATION.
Improvements in or Appertaining to Whip Rolls for Looms.
A communication from abroad by ANTHONY F. PARKER, of Charleston, State of
South Carolina, United States of America, Manufacturer.
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 invention and in what manner the
same is to be performed, to be particularly described and ascertained in and by the
following statement :-
This improvement is designed to render the whip-bar and friction devices more
uniform in allowing the warps to be drawn along by varying the angle at which the
warps pass over the yielding whip-bar as the weaving progresses, so as to cause the
tension to turn the warp-beam whenever warp is to be given off, and then tightening
up the warps by the whip-bar to maintain uniformity of tension thereon.
In the drawings:-
Figure 1 is a vertical section of part of a loom illustrating the improvement.
Figure 2 is a plan view, partly in section, at one end of the support for the
whip-bar.
Figure 3 illustrates a modification of the invention in which O designates a stand
to be fastened by a bolt passing through the slot T, to the side of the loom,
Q designates the vibrating lever pivoted to the stand O by the stud P. U designates
the V slot in which rests the end of the whip-roll. A slot is cut in the other end of
the vibrating lever Q through which passes the spindle S. The spring R which
is wound around the spindle S operates upon the lever Q to give it elasticity.
The yarns or warps are wound upon the beam A, the journals whereof are
received in suitable bearings in the frames B, and a friction is applied to the beam
to regulate the let-off in any usual manner.
Upon the frames B, there are stands or brackets C that are slotted at D for the
reception of the pivot-studs E of the levers F, and these levers F, near their back
ends are notched to receive the V-shaped ends of the whip-bar G. This whip-bar G
and bearing bar G¹, extend across the loom and upon them the warps rest as they
pass up from the yarn beam, and thence horizontally to the brace-rods K and
heddles. The bearing bar G¹ is at one side of and parallel with the whip-bar G,
and the two are permanently connected by the cross-pieces or arms 3 3, and the edges
of the whip-bar and bearing bar are rounded and smooth, so that the warps will not
be injured and will be subjected to the proper friction in passing over the surfaces.
At the forward ends of the levers F, the contractile helical springs M are applied.
The lower end of each spring is connected to the frame and the upper end to a
screw 6 passing through the corresponding lever and receiving the adjusting nut 8.
By raising or lowering the pivot studs E, the levers and whip bar can be raised or
lowered to bring the warps to the proper level, and by adjusting the nuts 8, the
tension of the springs M may be so changed that the levers I, will tend to become
inclined more or less as desired. By these adjustments the relative level of the whip-
bar G and bearing bar G¹ will be varied, as may be advantageous for different kinds
of warps. When the parts are properly adjusted, the action is uniform and the fabric
is of the same density from end to end. As the weaving progresses, the whip-bar
rises or falls slightly under the varying strain occasioned by the shedding. When
the friction on the yarn beam yields and the beam partially turns under the tension
of the warps, the springs M contract, and the edge of the bearing bar G¹ is elevated
and takes up the slack. As the weaving progresses, the warps are drawn over the
whip-bar and that is depressed and the springs M elongated. When the warps take

page_text: a bearing on the upper surface of the whip-bar G, they have less leverage against the
springs, and the pull on the warps will turn the yarn-beam and the operations are
repeated, thus insuring great uniformity in the weaving.
In consequence of making the whip-bar G and bearing bar G¹ separate from the
levers F, the bars G and GT can be taken out of the loom without disturbing the
levers F, to give more room for introducing the yarn-beam and threading up
the warps, and when replaced, the V-shaped connections of the whip-bar G to
the levers F, are tightened and rendered firm by the pressure of the warps. In cases
where the whip-roll has been upon arms extending out from a shaft in fixed bearings
the shaft has no rising-and-falling movement. In the improvement, the whip-bar and
bearing bar rise and fall together, and as they descend, the angle at which the warps
are drawn becomes more obtuse, and there are two obtuse bends as soon as the
warps come into contact with the whip-bar G; hence the tension is more direct upon
the yarn beam, tending to turn the same and give off more yarn, and the springs M,
also act through the levers, bars and warps to turn the yarn beam, and when this has
taken place and the whip bar rises, the angle becomes less obtuse and the greater
strain is taken upon the whip-bar and the tendency to turn the yarn beam is
lessened.
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. The combination with the yarn-beam of the levers F, the adjustable pivot-studs
for the same, the springs M, the whip-bar G, having V-shaped ends resting in notches
in the levers F, the bearing bar G' and the arms that connect the same to the
whip-bar, substantially as set forth.
2. A whip-bar and a bearing bar parallel to each other and connected by arms,
and the V-shaped ends of the whip bar in combination with levers notched to receive
the same, pivot studs and slotted stands for receiving said levers, and springs, screws
and nuts connected therewith for adjusting said levers, all substantially as and for the
purpose set forth.
Dated this 15th day of October 1889.
WM. P. THOMPSON & Co.,
Agents for the Applicant.