IMPROVEMENTS IN PRESSING OR SQUEEZING MACHINES FOR TEXTILE FABRICS
Year: 1879

page_text: PROVISIONAL SPECIFICATION left by Gerard Wenzeslaus von Nawrocki at
the Office of the Commissioners of Patents on the 31st July 1879. A com-
munication from William Bernhardt, of Fichendorf, in the German Empire.
GERARD WENZESLAUS VON NAWROCKI, of the Firm of J. Brandt and G. W.
von Nawrocki, Patent Agents, of No. 124, Leipzigerstrasse, Berlin, in the German
Empire. "IMPROVEMENTS IN PRESSING OR SQUEEZING MACHINES FOR TEXTILE
FABRICS." [A communication from William Bernhardt, of Fichendorf, in the German
Empire.]
For squeezing or pressing endless textile fabrics pressing machines are required of
which the upper pressing roller can be removed from the lower roller in order to
bring the fabric between the two. Furthermore, the lower roller must have flanges
on either side in order to prevent the fabric from passing out from between the rolls
during the squeezing operation, and special appliances are requisite for preventing
the fabric from getting between the said flanges and the sides of the upper roller.
The present Invention relates to improved means for accomplishing the above
object in such pressing or squeezing rollers.
According to one arrangement a trough shaped guide is fixed in front of the
lower roller, having a cover that has a lip projecting somewhat over the surface of
the roller, and that can be raised out of the trough so as to introduce the fabric
into it, after which the cover is lowered so as to cause the fabric to pass.between
its lips and the roller for the purpose of guiding it between the two rollers. The
upper roller is carried by a fork connected to a piston working up and down in a
cylinder and which is held down when the rollers are in operation, and is raised up
from the same, as will be presently described; from the said fork project arms, the
ends of which carry a spindle from which the said cover is suspended by eyes, so
that as the fork with the upper roller is raised or lowered, the cover is raised or
lowered with it. The two arms are connected by a transverse bar having a screw
stop against which the projecting lip of the cover bears, so that by adjusting such
screw stop the pressure of the lip upon the fabric as it passes on to the roller is
regulated. The spindle carrying the cover has a lever to which is pivotted one end
of a rod, the other end of which is pivotted to the fork of the upper roller. The
spindle has furthermore a hand lever by turning which the spindle and first named
lever are turned, and thereby owing to the above mentioned connection-to-the-fork,
the cover will be turned up to an angular position so that it can be raised up out
of the trough independently of the raising of the upper roller.
According to another arrangement the entire trough shaped guide is caused to
rise and fall with the upper roller, being connected to the fork thereof, and either

page_text: the cover may be made to rise and descend by the means above described, or the
cover may be fixed, and the one side of the trough is made to open on hinges,
which are provided with curved guards to prevent the fabric from catching into
them. The raising of the upper roller is effected by levers pivotted to the upper
end of the before mentioned cylinder and connected to the fork by suspension rods,
while the holding down of the roller during the squeezing operation is effected
either by adjustible, rotatable cams acting as stops to the before mentioned piston,
and which are adjusted in position or turned so as to allow the piston to ascend
by means of links and levers worked by hand, or in place of rotatable cams a
sliding wedge or cam shaped bar may be employed, or the piston may have a
projecting stem which abuts against an adjustible stop or arm turning on a centre
on the top of the cylinder..