IMPROVEMENTS IN SEWING MACHINES FOR PRODUCING OVER-CAST AND BUTTON-HOLE HEMS WITH A SINGLE NEEDLE
Year: 1870

page_text: LETTERS PATENT to William Robert Lake, of the Firm of Haseltine,
Lake, & Co., Patent Agents, Southampton Buildings, London, for
the Invention of "IMPROVEMENTS IN SEWING MACHINES FOR PRODUCING
OVER-CAST AND BUTTON-HOLE HEMS WITH A SINGLE NEEDLE."-A com-
munication from abroad by Isidor Nasch, of Berlin, in the Kingdom
of Prussia, and Charles Grimme, of Brunswick, in the Dukedom of
Brunswick, Manufacturers.
Sealed the 20th January 1871, and dated the 11th August 1870.
5
COMPLETE SPECIFICATION filed by the said William Robert Lake at
the Office of the Commissioners of Patents, with his Petition and
Declaration, on the 11th August 1870, pursuant to the 9th Section
of the Patent Law Amendment Act, 1852.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
ROBERT LAKE, of the Firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London, send greeting.

page_text: SINGLE NEEDLE," and have petitioned Her Majesty to grant unto me, my
executors, administrators, and assigns, Her Royal Letters Patent for
the same, and have made solemn Declaration that it has been com-
municated to me from abroad by Isidor Nasch, of Berlin, in the
Kingdom of Prussia, and Charles Grimme, of Brunswick, in the Duke-
dom of Brunswick, Manufacturers.
NOW KNOW YE, that. I, the said William Robert Lake, do hereby
declare that the following Complete Specification, under my hand and
seal, fully describes and ascertains the nature of the said Invention, and
in what manner the same is to be performed, in and by the following
statement, reference being had to the accompanying Drawing forming
a part of this Specification :-
The basis of this Invention is a a common shuttle sewing machine in
which the motion of the needle is altered while the shuttle operates in
the usual manner.
The motion of the needle is such that while the
stuff is being equally moved on by the feed bar alternate motion is
imparted to the needle, so that each time it reaches the end of the
oscillating motion, either to the right or left, it makes one stitch, that is
to say, it passes once through the stuff, and the second time close
beside it, but each time the shuttle passes through the loop formed by
the needle. It will be evident that as soon as the needle together with
the shuttle moves on in the way above described an overcast or whipped
'hem must be produced.
--
I obtain the above results by the aid of the following contrivences:-
On the shaft or arbor of the fly wheel there is a cog wheel which gears
into a second larger wheel. On the shaft of the said larger wheel there
is an eccentric plate, by means of which an oscillating motion is
imparted to a lever, not a simple oscillating motion but a motion which
is interrupted by a pause at each end. The two pauses or resting points
allow the needle time to make one stitch in the cloth, and the second
time at the side thereof. This intermitting oscillating motion of the
lever is obtained by means of the inside of the eccentric, which is con-
nected to the lever by a slot or opening in its end of such form and
dimensions that the eccentric acts only on two sides. The other end of
the lever is connected by a screw to a bow or elbow piece which
partakes of the oscillating motion of the lever, and is coupled to a tube
by a flange through which the needle bar can move up and down, and
thus follow the oscillating motion of the lever. Should it become

page_text: desirable to make the simple quilting stitch the screw which connects
the lever to the bow may be removed and the tube with the needle
holder adjusted and fixed in the proper position by other screws.
DESCRIPTION OF THE DRAWING.
Figure 1 is a side elevation of the said improved machine; Figure 2
is an end elevation of the same; Figure 3 is a horizontal section of a
portion of the said machine.
The needle is marked n; a is the fly wheel shaft whereon is fixed the
wheel which gears into the larger wheel r¹; & is the eccentric plate on
the shaft of the wheel ² for imparting motion to the lever c whose front
end is connected to the elbow piece d which is attached to the tube g.by
the flanges e; f is the screw which connects the lever to the bow or
elbow piece d.
Having thus fully described the said Invention as communicated to
me by my foreign correspondents, I claim a single needle sewing
machine with parts constructed, combined, and operating together,
substantially as set forth for the purposes specified.
In witness whereof, I, the said William Robert Lake, have here-
unto set my hand and seal, this Eleventh day of August, in the
year of our Lord One thousand eight hundred and seventy.
WILLIAM ROBERT LAKE.
(L.S.)
Witness,
D. L. WAGNER.