IMPROVEMENTS IN. SEWING MACHINERY
Year: 1866

page_text: LETTERS PATENT to George Haseltine, of the "International Patent
Office," No. 8, Southampton Buildings, Chancery Lane, in the County
of Middlesex, Civil Engineer, for the Invention of "IMPROVEMENTS IN.
SEWING MACHINERY." -A communication from abroad by Lewis Budd.
Bruen, of the City, County, and State of New York, United States of
•
COMPLETE SPECIFICATION filed by the said George Haseltine at the
Office of the Commissioners of Patents, with his Petition and Decla-
ration, on the 20th October 1866, pursuant to the 9th Section of the
Patent Law Amendment Act, 1852.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGĖ
HASELTINE, of the "International Patent Office," No. 8, Southampton
Buildings, Chancery Lane, in the County of Middlesex, Civil Engineer, send
greeting.
WHEREAS I am in possession of an Invention for "IMPROVEMENTS. IN
SEWING MACHINERY," 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 communicated
to me from abroad by Lewis Budd Bruen, of the City, County, and State
of New York, United States of America.

page_text: class of sewing machines in which an elliptical hook is employed in forming
the stitch, and the object of the said Invention is to adapt the said machines
to the forming of the stitches known as the double-loop and three-thread
stitches..
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a side elevation of the machine; Figure 2, a partial end view
of the same; Figure 3 is a bottom view of cloth plate with improved attach-
ment thereon; and Figure 4, a side view of the same. Like letters refer to
corresponding parts in each of the Figures..
A is the bed plate; B, the stationary arm; C, the needle arm; D,
cloth plate; E, the presser foot; F, the elliptic hook; G, the bobbin; and
H, its holder; I, the crank operating the hook; J, the shaft and lever frame;
K, the lever; and L, its shaft; M, the spring thereon; N, the securing lever;
O, the thread carrier lever; P, the thread carrier; and Q, the projection on
its stud R; S, the thread remover; T, the thread carrier spring; U, the
under thread tension; V, its regulating nut; W, the outward projection on
lever 0; X, the under thread spool holder.
The operation is as follows:-Frame J being secured on the .under side of
cloth plate D so that lever K bears against .crank I as the latter revolves,
shaft L is rotated sufficiently by the movement of lever K to cause lever O to
rise, and its outward projection W permits spring T to draw thread carrier P
with a distended loop across the line of the needle hole in the cloth plate,
through which loop the needle with its thread descends, crank I continuing
its revolution, lever K is pressed up, which throws lever O up, and its extremity
bearing against projection Q carries thread carrier P revolving on stud R back
to its place, and at the same time thread remover S carries both threads out
of the line of hook F, so that it shall not twice catch the same loop or the
bobbin thread when the three-thread stitch is made. When the simple lock
stitch is desired, lever N secures lever K from crank I so that it does not act
upon it.
To make the double-loop stitch the spool is placed on holder X, the thread

page_text: brought over tension U between its dises and through the eyes of groove of
thread carrier P in the ordinary manner of double-loop machines. If the
bobbin is threaded a three-thread stitch is made.
It is manifest that the device may be secured in various ways to the machine
and the motions obtained from the feed cam if preferred.
Having thus fully described the said Invention as communicated to me by
my foreign correspondent, and shewn how the same may be conveniently and
advantageously carried into practise, I claim,―
First, the device described attached to the cloth plate of elliptic hook
machines constructed and operating substantially as explained for forming
double-loop and three or more thread stitches thereby at pleasure.
Second, the combination of cloth plate D, elliptic hook F, with or without
bobbin G, needle arm C, thread carrier P, and the other usual and essential
operative parts of elliptic hook machines constructed and operating together,
substantially as and for the purposes described.
Third, remover S to withdraw the threads from the line of travel of the
hook, substantially as described.
In witness whereof, I, the said Georgo Haseltine, have hereunto set my
hand and seal, this Twentieth day of October, in the year of our Lord
One thousand eight hundred and sixty-six.