Improvements in Machines for Printing Fabrics.
Year: 1892

page_text: Date of Application, 16th Apr., 1892
Complete Specification Left, 16th Jan., 1893-Accepted, 18th Mar., 1893
PROVISIONAL SPECIFICATION.
Improvements in Machines for Printing Fabrics.
We, FREDERICK SALIS SCHWABE, of Rhodes Works, Middleton, Calico
Printer, and WILLIAM PICKUP and WILLIAM KNOWLES, of Orchard Street,
Pendleton, Engineers, all in the County of Lancaster, do hereby declare the
nature of this invention to be as follows :—
Our invention relates particularly to improvements in that class of machines for
printing fabrics in which the printing of headings or other designs across the fabric
is effected at certain intervals.
Our invention has for its object in the first place, to improve the construction of
cams with variable or adjustable working surface, used in the said printing machines,
so as to support and act upon the anti-friction bowl, carried by the lever or rod of
the printing roller lift and drop motion, always centrally, during the whole of the
time the printing roller is in contact with the fabric which heretofore has not been
the case with the aforesaid cams.
Our invention has for its object in the second place, to provide means whereby
the relative adjustment of the shafts carrying the aforesaid cams is facilitated, on
changing the length of the pattern to be printed, and thus the necessity of altering
the position of each individual cam on its shaft avoided.
Our invention has for its object in the third place, to provide means which will
facilitate an instantaneous drop of the printing roller at the desired moment and
thus render the printing more accurate.
In carrying out the first part of our invention, we form the said cam in three parts
equal in diameter and with a portion of the periphery thereof, say, one half or more,
recessed to a convenient depth. The said parts are suitably fitted together, the
inner one forming an internal wheel and adapted to be rotated between the
outer parts, by means of a pinion fixed on a shaft mounted in the outer parts. This
shaft at one end has attached a worm wheel, which gears into a worm mounted in
the respective side of the cam, by means of which the inner cam part, can be
rotated at will, so as to alter the relative position of the outer and inner cam parts
to a nicety. In order to lock the inner cam part to the outer ones, when set as
required, one or more bolts are passed through the same.
In carrying out the second part of our invention, we fix on each, or on any
suitable number, of the cam shafts as may be required in different machines, &
"box wheel," in lieu of an ordinary wheel, which enables us to alter the relative
position of the shafts and their cams more accurately.
In carrying out the third part of our invention we form the link, which engages
the lift and drop motion rod, carrying the anti-friction bowl, with a slot lengthwise,
which permits the said rod to drop instantaneously the moment its anti-friction
bowl has arrived at the end of the working surface of the aforesaid cam.
Where the said anti-friction bowl is carried by a lever, a slot is formed in the
latter either length or crosswise as the case may be to suit different nips, in which
slot the anti-friction bowl is permitted to drop in a similar manner, as in the case
of the link described.
Dated this 14th day of April 1892.
F. BOSSHARDT & Co.,
Agents to Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements in Machines for Printing Fabrics.
We, FREDERICK SALIS SCHWABE, of Rhodes Works, Middleton, Calico
Printer, and WILLIAM PICKUP and WILLIAM KNOWLES, of Orchard Street,
Pendleton, Engineers, all in the County of Lancaster, 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:―
Our invention relates particularly to improvements in that class of machines for
printing fabrics in which the printing of headings or other designs across the fabric
is effected at certain intervals.
Our invention has for its object in the first place, to improve the construction of
cams with variable or adjustable working surfaces, used in the said printing
machines, so as to support and act upon the anti-friction bowl, carried by the lever
or rod of the printing roller lift and drop motion, always centrally, during the
whole of the time the printing roller is in contact with the fabric which heretofore
has not been the case with the aforesaid cams.
Our invention has for its object in the second place, to provide means whereby
the relative adjustment of the shafts carrying the aforesaid cams is facilitated, on
changing the length of the pattern to be printed, and thus the necessity of
altering the position of each individual cam on its shaft avoided.
Our invention has for its object in the third place, to provide means which will
facilitate an instantaneous drop of the printing roller at the desired moment and
thus render the printing more accurate.
And in order that our invention may be more fully understood we have caused
to be appended hereunto one sheet of drawings marked with letters of reference
indicating like parts in the various figures.
Fig. 1 is an end view and Fig. 2 partly a side view and partly section of our
improved variable adjustable cam. Fig. 3 is a front view of the cam shaft and
Figs. 4 & 5 end views of the printing roller lift and drop motion, furnished with
our improvements and drawn at a reduced scale.
b can
In carrying out the first part of our invention and referring to Figs. 1 & 2, we
form the said cam in three parts a, b, c, equal in diameter, each having a portion
of the periphery, say, one half or more, recessed to a convenient depth. The said
parts are suitably fitted together, by preference the part c being secured on the
boss a¹ of the part a, the inner one 6 forming an internal wheel b' and adapted to be
rotated between the outer parts a, c, by means of a pinion d fixed on a shaft e
mounted in the outer parts a, c.
This shaft e at one end has attached a nut e¹ and
at the other end a worm wheel f, which gears into a worm g mounted in the
respective side or part a of the cam, by means of which the inner cam part
be rotated at will, so as to alter the relative position of the outer and inner cam
parts a, c, b, respectively to a nicety, and thus shorten or lengthen its working
surface as may be required. In order to lock the inner cam part 6 to the outer
ones a, c, when set as required, one or more bolts are passed through the same.
In order to allow of adjusting the said cam bodily on the cam shaft i, in lieu of
keying the same thereto, it may be arranged on a bush keyed on the cam shaft i
and rendered adjustable on the said bush by means of a worm and wheel as will be
readily understood.
In carrying out the second part of our invention and referring to Fig. 3, we fix
on each or on any suitable number, of the cam shafts i as may be required in
different machines, a "box wheel" k of ordinary or any other convenient type,
i.e. a wheel the circumference of which is rendered adjustable relative to its boss,
in lieu of an ordinary wheel, which enables us to alter the relative position of
the shafts and their cams a, b, c, more accurately.
In carrying out the third part of our invention and referring to Fig. 4, we form

page_text: the link 1, which engages the lift and drop motion rod m carrying the anti-friction
bowl n, with a slot o lengthwise, which permits the rod pin m³ to slide in the link
slot o and thus cause the rod m to drop instantaneously the moment its anti-friction
bowl n has arrived at the end of the working surface of the cam a, b, c. In lieu of
forming the slot o in the link l, the same may be formed in the rod m cross or
lengthwise and the pin m³ attached to the link and allowed to slide in the slot o.
Where the anti-friction bowl n is carried by a lever p, see Fig. 5, a slot o is
formed in the latter either length or crosswise as the case may be to suit different
nips, in which slot o the anti-friction bowl n is permitted to slide or drop in a
similar manner, as in the case of the link / described.
Although we have shown in the drawing the last part of our invention applied in
connection with cams constructed in accordance with the first part of our invention,
we do not confine ourselves to that particular use as the same may be employed
with cams of other suitable construction.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what we
claim, is-
"In machines for printing fabrics."
1st. The employment of cams with variable working surface formed in three
concentric parts a, b, c, each having a portion of its periphery recessed and the
inner part 6 being rendered adjustable relatively to the outer parts a & c, so as
to shorten or lengthen the working surface of the cam as may be required,
substantially as and for the purpose set forth.
2nd. The employment of a "box wheel," of ordinary or other convenient type, on
the cam shaft i, in lieu of an ordinary spur wheel, substantially as and for the
purpose set forth.
3rd. The formation of a slot o in the link holding the rod m carrying the
anti-friction bowl n or in the rod m itself respectively adapted to receive the link
or rod pin m³ or formation of a slot o in the lever n adapted to receive the
anti-friction bowl n, substantially as and for the purpose set forth.
Dated this 14th day of January 1893.
F. BOSSHARDT & Co.,
4, Corporation Street, Manchester, Agents to Applicants.