Improvements in Machines for Printing Sarees, Scarves, Shawls, and the like.
Year: 1892

page_text: COMPLETE SPECIFICATION (AMENDED).
Improvements in Machines for Printing Sarees, Scarves, Shawls,
and the like.
We, SAMUEL KNOWLES and JOSHUA KNOWLES, both of the firm of
S. Knowles and Company, of Tottington near Bury in the County of Lancaster,
Calico Printers, 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 to improvements in machines for printing sarees, scarves,
shawls and other similar articles in which a heading or pattern is printed inter-
mittently and our improvements consists chiefly in providing a novel combination
and arrangement of mechanism whereby the rotation of each printing roller is
arrested whenever it is out of contact with the fabric on the printing bowl or
cylinder, and resumed in correct register whenever the said roller re-commences
printing.
And in order that our invention may be fully understood and readily carried into
effect we will describe the accompanying sheet of drawings reference being had to
the figures and letters marked thereon.
Figure 1 is a side elevation of part of a machine for printing sarees and the like
to which our improvements have been applied.
Fig. 2 is an end view of the crown wheels and gearing. Fig. 3 is a plan of the
tappet shaft and clutch lever connections and Fig. 4 is a detail view on an enlarged
scale of the box wheel and bosses.
In the drawings, a designates the main bowl or cylinder, 6 the crown wheel shaft,
c the smaller printing rollers and c² a larger printing roller. d d are the two
crown wheels fixed on the shaft b, the larger wheel d driving the series of smaller
printing rollers by means of the box wheels e and the smaller wheel ¹ being
employed when required to drive the larger printing rollers c².
Each printing roller has fixed upon its mandrel or axis f a boss y upon which
is mounted loosely an intermediate boss upon which is mounted loosely the box
wheel e. The box wheel e and intermediate boss h have each clutch teeth formed
upon one side as shown best in Fig. 4 and these clutch teeth gear with corre
sponding projections formed on a sliding clutch i which is loose on the mandrel f.
On the mandrel is fixed a worm wheel j and on the side face of the intermediate
boss are projections h¹ which carry a worm & which gears with the worm wheel j.
Consequently when the sliding clutch is in gear with the clutch teeth on the
rotating box wheel e as well as with the teeth on the intermediate boss h, motion
is transmitted from the crown wheel d or d as the case may be through the
worm and worm wheel ; to the mandrel f and printing roller. The object of
connecting the intermediate boss h to the mandrel by worm gearing is to enable
the printing roller to be adjusted relatively to the box wheel to suit the pattern
this being effected when the clutch is in gear. Each clutch i (or each pair of
clutches as shown on the drawings) is moved into and out of gear in order

page_text: to stop or start the rotation of a printing roller (or rollers) as required by a
suitable arrangement of mechanism actuated from the tappet shaft or equivalent
part.
A convenient arrangement consists as shown in having a pair of clutch forks m
(one for each clutch i) fixed on a short shaft n supported in brackets o secured
to the side framing p which is omitted in Fig. 1. On the shaft n is fixed an
arm n¹ which is connected by an adjustable rod to a quadrant, lever pivoted
at to the side framing p. The quadrant lever r is connected by a rod to an
arm t on a shaft on which is also fixed an arm connected by a rod u to a
lever which is pivoted at and at its upper end carries a small antifriction
roller w which lies in cont et with the cam on the tappet shaft l.
ยู
Whenever the proj ng portion of the cam a forces the roller w and lever v
outward the connections above described actuate the clutch forks m and move the
pair of clutches i out of gear with the clutch teeth on the box wheels e whereby
the motion of the printing rollers controlled by said clutches is arrested. When
the projecting portion of the cam æ leaves the roller w a spring y in a dash pot
raises the connecting rods and so moves the clutches i into gear whereby the
rotation of the printing rollers is resumed.
In order to regulate the length of the period during which the rotation of a
printing roller or rollers is arrested we employ adjustable projections on the cam *
so that a longer or shorter projection may be used as required.
When a larger printing roller c¹ is employed (or a number of such rollers as the
case may be) it is driven from the smaller crown wheel d¹ by means of a larger
box wheel e mounted on an intermediate boss h in a manner similar to that already
-described.
It will be obvious that by the use of a pair of crown wheels of different
diameters in combination with box wheels of different diameters either arranged
with clutches and operated as described or otherwise mounted and operated a
series of large or series of small printing rollers can be used alternately
or separately or a series of large and small printing rollers can be used
simultaneously; but we wish it to be clearly understood that we make no broad
claim for the use and application of a pair of crown wheels of different diameters
but only when such are used in combination with mechanism for automatically
.arresting the rotation of each printing roller at the time and for the purpose herein
set forth and as hereinafter pointed out in the claims.
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 :-
1. The improved mechanism herein described and shown for automatically arresting
the rotation of each printing roller while it is out of contact with the fabric on the
printing bowl, and re-starting it in correct register prior to its being moved back
into contact with said fabric whereby sarees or similar articles with headings or
patterns of various lengths can be produced the length of which articles may or
may not be multiples of the circumference of the printing roller.
2. The combination and general arrangement of parts embodying our improve-
.ments substantially as herein described and as illustrated by the drawings annexed.
Dated this 15th day of April 1892.
Jated Luis on day of Ap
H. B. BARLOW,
17, St. Ann's Square, Manchester, Agent for Applicants.