Improvements in Machines for Sewing Festoon and Ornamental Seams.
Year: 1898

page_text: Date of Application, 3rd Nov., 1898-Accepted, 14th Jan., 1899
COMPLETE SPECIFICATION.
Improvements in Machines for Sewing Festoon and Ornamental
Seams.
F
I, THOMAS RICHARD SHILLITO, of 15, Tooks Court, Cursitor Street, London, E.C.,
Engineer and Patent Agent, do hereby declare the nature of this invention, a
communication to me from abroad by the Fabrik für Spezialnähmaschinen A.G.,
(Patente Julius Gutmann) of Zurich, Switzerland and in what manner the same
is to be performed, to be particularly described and ascertained in and by the
following statement:―.
This invention relates to a sewing machine for the production of festoon and
ornamental seams and the object of the invention is to provide a machine by which
such seams can be produced automatically.
The invention consists in a festoon and ornamental seam sewing machine in
which the cloth presser or the needle rod, as the case may be, is turned from a
pattern disc or pattern cam through an oscillating lever,, a horizontal sliding
toothed rack rod and a toothed pinion fixed either on the needle rod or on the
cloth presser said turning movement being effected in a direction corresponding
to the form of said disc or cam.
In the accompanying drawing Fig. 1 is a side view of a machine of the inven-
tion and Fig. 2 shews a somewhat modified arrangement and construction of the
mechanism.
M is the pattern disc or pattern cam having attached to it a ratchet wheel S
both of which parts are adapted to turn simultaneously on a pivot fixed in the
machine frame. On said pivot is also fixed a lever carrying on a pin at its
opposite end a pawl k which engages the ratchet wheel S. Adjacent to said
pawl and on the same pin is jointed a rod K¹ which connects the lever with a
curved slotted link K. This latter forms a portion of a lever h and is adapted to
turn with this on a pivot o fixed in the machine frame. The lever / engages
by a lug or by a roller in the groove of a cam fixed on the main spindle of the
machine thus causing said lever to perform an oscillating movement which is
carried over through the connecting rod K¹ to the lever h¹ thus driving the pattern
disc or pattern cam M backwardly. The disc or cam is pressed against by a
roller r carried on the lever H which is mounted to oscillate on the fixed pivot o¹
on the machine frame. Said lever H is connected at i with the rack rod w. When
the lever H is set in oscillation by the disc or cam M, the rack rod w is moved
to and fro, its teeth engaging in a pinion fixed on the needle rod or cloth presser
rod. In this way the needle rod, provided with two needles, or the cloth presser
rod, is turned and thereby an ornamental stitch or seam is produced which cor-
responds to the form of the pattern disc or pattern cam in use at the time.
The machine works as follows;-Upon the rotation of the main spindle a pattern
disc or pattern cam is set in backward rotation thereby causing a to and fro
movement of the rack rod and this latter turns the needle rod provided with two
needles or the cloth presser foot.
The two turning needles work a certain pattern by their stitches following

page_text: upon each turning movement, or when the cloth presser foot is turned the same
work is done through the cloth being turned underneath the needles or needle.
In the modification shewn in Fig. 2 the pattern disc or pattern cam M and the
ratchet wheel $ are similarly mounted on a pivot fixed in the machine frame.
The lever is cranked and mounted to turn on the same pivot and attached to a
connecting rod which at its other end connects with a curved slotted link L
pivotted on the machine frame. The link is furnished with a roller or lug which
engages in the groove of a cam fixed on the spindle W. In this way the disc or
cam M is driven from the upper spindle W.
Having now particularly described and ascertained the nature of said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:-
1. For sewing festoon and-ornamental seams in different figures and windings,
a machine in which the cloth presser or the needle rod is turned from a pattern
disc or pattern cam or its equivalent through a toothed rack and toothed pinion
in a manner corresponding to the form of said dise or cam, substantially as
described and shewn.
2. A machine of the kind referred to, in which the cloth presser or the needle
rod can be actuated either from the upper or the lower spindle of the machine
through a pattern disc or pattern cam, substantially as described and shewn.
3. A machine of the kind referred to, in which a pattern disc or pattern cami,
driven through ratchet mechanism either from the main spindle of the machine
or from a spindle parallel to the main spindle, actuates a lever connected to a rack
rod which engages with a pinion on the needle rod or on the cloth presser, for the
purpose specified substantially as described and shewn.
Dated this 3rd day of November 1898.
THOMAS R. SHILLITO,
15, Tooks Court, London, E.C.