Improvements in Tuck Sewing Machines.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in Tuck Sewing Machines.
WILLIAM BOWDEN, Embroidery Manufacturer, 13, Swan Street, Manchester,
do hereby declare the nature of this invention to be as follows:-
Hitherto the depressors on machine in which the needles work across channels
in surface of table have been made so that the whole of the curve of the tucking
knife has been below surface of table, thus making it necessary to raise knife
when inserting fresh work. In my improvement I make the first portion of curve
project above the table so that upon pushing the cloth against it the material
slides into the channel and the tuck is formed.
By this improvement the tucking knife can, be made a fixture.
I, WILLIAM BOWDEN, of 13, Swan Street, Manchester, Manufacturer of
Embroidered Goods, 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:—
This invention relates to multiple tuck sewing machines of the type described
and illustrated in the Specification to my previous Letters Patent dated the 11th
day of June 1894 and numbered 11257.
In a machine constructed as therein described the depressers or tuck formers
have been so formed and arranged that their active or working lower edges have
been contained entirely within the tuck channels when in use, so that when fresh
material had to be inserted it became necessary to raise the depressers.
The object of the present invention is to construct each depresser with its lower
edge so curved or inclined that one end of it projects above the surface of the
table while the other end of it or other suitable part of it is contained within the
channel to form the tuck. The material can thus be easily fed into the channels
and the depressers may be fixtures
In order that my invention may be more readily understood I have hereto
appended a sheet of drawings which illustrate one form of my improved depresser
from two points of view.
Figure 1 is a representation of the depresser in side elevation in position within
its channel.
Thaws it in edge elevation with the channel in cross section.

page_text: A is the depresser or tuck former the lower part of which is formed with a curved
or inclined edge extending from a to b. The depresser is shown in its working
position within its channel B, in which position the front end a of the curved lower
edge extends to a point above the surface of the table C whilst the back edge or
other suitable or convenient part is within the channel so as to form the tuck.
The material D can thus be guided into the channel by passing it in the direction
of the arrow under the front raised end of the depresser which then forces the
material downwards upon its further movement, as illustrated in the figures. In
commencing work the tucks are thus easily formed without the necessity of lifting
the depressers from the channels.
If desired the depressers may be formed so as to be easily adjustable in their
lengths in order to adapt them to varying depths of tucks.
It will of course be understood that, although I have shown the lower edge of
the depresser as curved, it may have any other suitable convenient form without
departing from this invention. For instance, it may have a straight line from
the point a almost to the point b. The essential feature is that the lower edge shall
have its front end projecting above the surface of the table in such a manner as to
form a guide and depress the travelling material into the channels so as to form
tucks.
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:
In a tuck sewing machine, a depresser or tuck former constructed with a curved
or inclined lower edge in such a manner that one end of the edge projects above the
surface of the table and acts as a guide to force the material into the channel,
substantially as and for the purpose hereinbefore described and as illustrated by
the accompanying drawings.