IMPROVEMENTS IN SEWING MACHINES
Year: 1861

page_text: LETTERS PATENT to Charles Callebaut, of 2, Rue Ste. Appoline, Paris;
(Empire of France), and of 4, South Street, Finsbury, London, Mer
"
PROVISIONAL SPECIFICATION left by the said Charles Callebaut at the
Office of the Commissioners of Patents, with his Petition, on the
25th April 1861.
I, CHARLES CALLEBAUT, of 2, Rue Ste. Appoline, Paris, (Empire of France);
and of 4, South Street, Finsbury, London, Merchant, do hereby declare the
nature of my said Invention of "IMPROVEMENTS IN SEWING MACHINES," to be
as follows, that is to say :-
My Invention is applicable to all kinds of sewing machines, and has for
object to obviate a great defect in sewing done by machinery, viz., the pos-
sibility of undoing the seam by drawing out the thread or threads, and consists
in an improved arrangement by means of which the seam cannot be undone.
I take, for instance, a machine provided with a stuff drawer of any kind;
when the drawer has caused the stuff to advance a certain number of stitches,
I cause it to make a back stitch so as to form three superposed stitches.; .the
machine then recommences its ordinary motion, and after a certain number of
stitches recommences the back motion.

page_text: To answer all requirements, I can obtain the back stitch by hand by
means of a lever, so that I am enabled to form the stop stitches at option,
either at the commencement, at the end, or middle of the seam.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Charles Callebaut in the Great Seal Patent Office on the
30th September 1861.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHARLES
CALLEBAUT, of 2, Rue Sainte Appoline, Paris, (Empire of France), and of 4,
South Street, Finsbury, London, Merchant, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-fifth day of April, in the year of our
Lord One thousand eight hundred and sixty-one, in the twenty-fourth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said Charles Callebaut, Her special licence that I, the said Charles
Callebaut, my executors, administrators, and assigns, or such others as I, the
said Charles Callebaut, my executors, administrators, and assigns, should at
any time agree with, and no-others, from time to time and at all times
thereafter during the term therein expressed, should and lawfully might
make, use, exercise, and vend, within the United Kingdom of Great Bri
tain and Ireland, the Channel Islands, and Isle of Man, an Invention for
"IMPROVEMENTS IN SEWING MACHINES," upon the condition (amongst others)
that I, the said Charles Callebaut, my executors or administrators, by..an
instrument in writing under mine, or their, or one of their hands and seals,
should particularly describe and ascertain the nature of the said Invention,
and in what manner the same was to be performed, and cause the same to
be filed in the Great Seal Patent Office within six calendar months next and
immediately after the date of the said Letters Patent..
NOW KNOW YE, that I, the said Charles Callebaut, do hereby declare
the nature of my said Invention, and in what manner the. same is. to be
performed, to be particularly described and ascertained in and by the following
statement thereof, reference being bad to the accompanying Drawing, and
to the figures and letters marked thereon, that is to say:―
My Invention, is applicable. to all kinds of sewing machines, and has for
object to obviate a great defect in sewing done by machinery, viz., the possi-
bility of undoing the seam by drawing out the thread or threads, and cousists

page_text: in an improved mechanical arrangement by means of which the seam cannot
'be undone.
1
"I take, for instance, a machine provided with a stuff drawer of any kind;
when the drawer has caused the stuff to advance a certain number of stitches,
I cause it to make a back stitch so as to form three superposed stitches; the
machine then recommences its ordinary or forward motion, and after a certain
number of stitches recommences the back motion.
To answer all requirements, I can obtain the back stitch by hand by means
of a lever, so that I am enabled to form the stop stitches at option, either at
the commencement; at the end, or middle of the seam.
I produce at will in sewing machines a retrograde. movement of the stuff
drawer or mover, so as to obtain several superposed stitches, which 'fasten
'firmly the seam at the required point.
The annexed Drawing shows one of the applications of my system or mecha-
nism for effecting this object; it should however be understood that it can be
'applied to all kinds of sewing machines by modifying the arrangement of its
parts according to the mode of drawing the stuff employed in the machines:to
which my system is applied.
The annexed Drawing is supposed to represent an underneath view of.a
shuttle sewing machine. a, represents the framework; b, the shaft giving
motion to the crank arm c and connecting rod d, which works the shuttle; this.
shaft b may be worked by the pinion e, and supported by the parts f, it is
furnished with a protuberance g, on' which abuts a spring h, pressing on the
socket i seen in detail view, at Figure 2, which slides with a soft friction on the
shaft b; this socket i has a groovej, and is provided with a cam k; in the
groove jenters a bolt 1, being fixed to the lever, m, which oscillates on a
centre n; o is a lever working the stuff drawer, and serving to produce the
forward motion thereof; and p is a second lever also working the stuff drawer,
and serving to produce the backward motion thereof; a key or guide fixed to
the shaft 6 in a longitudinal direction keeps the socket i in its position, which
socket has a groove corresponding with the key or guide.
It will be understood that by moving the lever m to the right or left of the
operator, the bolt will draw along the socket i, which will slide on the shaft
in a longitudinal direction; the cam k will at will come either in contact with
the lever o, or with the lever p, and will raise one or the other according to
the position of the lever m, the shaft b always turning in the same direction,
the drawing of the stuff either forward or backward will thus be obtained.
With this arrangement there will be no danger of the seam coming un-

page_text: :done, for supposing the machine to be set for sewing forward, if it be wished
to make a stop stitch the lever m is moved, and the stuff drawer is made to go
backward, and thus fresh stitches are made over the first. When the requi-
site number of stitches has been made to ensure the sewing being firmly closed,
the lever mis placed in its first position, and the stuff mover is thus moved
forward, by which means a third stitch is superposed on the first two.
As the lever m is worked. by the hand, it will be understood that the operator
can make at will one or more superposed stitches according to the strength
which the sewing is required to have. It will also be understood that these
stop stitches may be made either at the commencement, or at the end, or at
any part of the seam. When the stuff drawer is placed on the top of the
machine, my system may be applied to the upper shaft, it being merely neces-
sary to modify the arrangement of the different parts according to the machine
to which my new system is applied.
Having now described the nature of my said Invention, and the manner of
carrying the same into effect, what I claim as my Invention, and intend to
be protected by the herein in part recited Letters Patent is, the application
to sewing machines of all kinds of a mechanical arrangement susceptible
.of being modified according to the construction of the machines to which
it is applied, and by which a forward or backward, movement is.communicated
at will to the stuff drawer so as to superpose three stitches one above the other,
and thus produce a seam not liable to be undone, especially at the junction of
the superposed stitches, as herein-before described and represented in the
annexed Drawing. :
In witness whereof, I, the said Charles Callebaut, have hereunto set
my hand and seal, this Thirteenth day of September, in the year of
our Lord One thousand eight hundred and sixty-one.
CALLEBAUT. AINE. (L.S.).
CALLEBAUT AINE. (L.S.)