IMPROVEMENTS IN MACHINES FOR PRINTING FABRICS
Year: 1886

page_text: Date of Application, 12th Oct., 1886.
Complete Left, 12th July, 1887.
Complete Accepted, 12th Aug., 1887.
I SAMUEL KNOWLES, of Tottington Works, near Bury, in the County of Lancaster,
Calico Printer, do hereby declare the nature of said Invention for IMPROVEMENTS IN
MACHINES FOR PRINTING FABRICS, to be as follows :-
My invention relates to improvements in machines for printing fabrics, particularly
for printing sarees or other fabrics in which it is desired to produce a pattern on the
fabric at certain intervals, the object of my Invention being to simplify and improve
the mechanism for moving the engraved printing rollers away from the fabric being
printed at the desired intervals and replacing them in their working positions as
required. In carrying out my Invention, the fabric to be printed is stretched as usual
upon the main bowl of the printing machine and the engraved printing rollers are
arranged partly round the bowl, being supported in blocks or slides fitted in slideways
in such manner that the printing rollers can be moved to or from the axis of the
bowl as required and this movement is effected by the following arrangement of
mechanism.
The block or slide at each end of each roller is attached to a lever preferably by
means of an adjusting screw working through a stud or block held in the lever which
is pivoted at one end to the machine frame and at the other end jointed to one end of
a rod which carries at the other end an antifriction roller. The rod is guided in any
convenient manner and the roller works on a cam or tappet secured on a tappet shaft.
Each tappet shaft is driven by means of a train of wheels from the first motion shaft
so that all the tappet shafts start and stop simultaneously with the machine. By
changing the wheels the speed at which the tappet shafts are driven can be regulated
for the different lengths of sarees or other fabrics to be printed.
If found necessary I may employ a spring or cushion of india rubber or metal or
both combined which spring or cushion if compressed when the roller is forced against
the bowl will exert its elastic force to assist in withdrawing the roller from the bowl.
1000

page_text: I SAMUEL KNOWLES of Tottington Works near Bury in the County of Lancaster
Calico Printer do hereby declare the nature of said Invention for IMPROVEMENTS IN
MACHINES FOR PRINTING FABRICS, and in what manner the same is to be performed, to
be particularly described and ascertained in and by the following statement :-
My invention relates to improvements in machines for printing fabrics particularly
for printing sarees or other fabrics in which it is desired to produce a pattern on the
fabric at certain intervals the object of my Invention being to simplify and improve
the mechanism for moving the engraved printing rollers away from the fabric being
printed at the desired intervals and replacing them in their working positions as
required.
In carrying out my Invention the fabric to be printed is stretched as usual upon
the main bowl of the printing machine and the engraved printing rollers are arranged
partly round the bowl being supported in blocks or slides fitted in slide ways in such
manner that the printing rollers can be moved to or from the axis of the bowl as
required.
And in order that my Invention may be fully understood and readily carried into
effect I will describe the accompanying Sheet of Drawing on which is represented a
side elevation of my improved machine for printing sarees and other fabrics on which
it is desired to produce a pattern at certain intervals.
In this view the dotted line a represents the circumference of the main bowl of the
machine and the rollers for printing the ordinary pattern on the fabric are marked b
while the rollers for printing the saree or intermittent pattern are marked c. The
rollers are simply set up to the fabric stretched on the bowl a by means of the usual
adjusting screws d but the rollers c are connected to and operated by my improved
mechanism which is arranged as follows:-
The block or slide e at each end of each roller c is fitted in slideways in a bracket
on the machine frame and is attached to a lever h preferably as shown by means of
an adjusting screw working through a stud or block held loosely in the lever
which is pivoted to the frame fat h¹ and at h² is jointed to one end of a rod j which
carries at the other end an antifriction roller which works on a cam or tappet k
secured on a tappet shaft k¹. The rod ; may be guided in any convenient manner
preferably as shown by means of an arm / jointed at to the rod j and at the other
end pivoted to the framing at m.
The tappet shafts in this case two in number are driven positively at the
required speed by trains of wheels not shown from the first motion shaft of the engine
so that the tappet shafts start and stop simultaneously with the machine. By changing
the wheels the speed at which the tappet shafts are driven can be regulated for the
different lengths of sarees or other fabrics to be printed.
Each tappet k is made by preference of a steel segment or segments secured on a
disc fixed on the shaft k³ so that by changing the segments more or less duration of

page_text: lift as required can be imparted to the printing rollers c. The tappet discs are suitably
recessed to allow the rollers c to fall out of contact with the fabric on the bowl a.
The printing rollers b and c are all driven in the usual manner by gearing not
shown from the crown wheel on the shaft of the bowl a.
From the foregoing description it will be readily understood that when the tappet
shafts are rotated and the tappets & move the antifriction rollers j that the rollers c
are by the intermediate connections raised into contact with the fabric on the bowl a
and as the tappets k leave the rollers j the rollers c being heavy at once overcome the
resistance of the connecting levers and fall out of contact with the fabric until
again raised by the action of the tappet as described.
Any number of printing rollers may be employed and if found necessary as for
example when the rollers approach a horizontal position a spring or cushion of india
rubber or metal or both combined may be employed which spring or cushion if com-
pressed when the roller is forced against the bowl will exert its elastic force to assist
in withdrawing the roller from the bowl.
Having now particularly described and ascertained the nature of my said Invention
and in what manner the same is to be performed I declare that what I claim is.―
1. In a machine for printing sarees and the like the combination with the printing
rollers c supported in sliding blocks connected adjustably to pivoted levers jointed to
levers carrying antifriction rollers of cams or tappets mounted on shafts, driven by
gearing from the engine substantially as and for the purposes herein described and as
illustrated by the Drawing annexed.
2. The construction combination and arrangement of parts embodying my improve-
ments in machines for printing sarees and the like substantially as and for the purposes
herein described and as shown.
Dated this 11th day of July 1887.
H. B. BARLOW,
17, St. Ann's Square, Manchester,
Agent for Applicant.