IMPROVE- MENTS IN APPARATUS EMPLOYED IN SEWING
Year: 1878

page_text: LETTERS PATENT to William Brookes, of No. 62, Chancery Lane, in the County
of Middlesex, Patent and Registration Agent, for the Invention of "IMPROVE-
MENTS IN APPARATUS EMPLOYED IN SEWING." A communication from abroad
by Messieurs Rosenberg and Fraenkel, of Elsasser Strasse, Berlin, in the Empire
of Germany, Manufacturers.
ealed the 16th July 1878, and dated the 30th January 1878.
PROVISIONAL SPECIFICATION left by the said William Brookes at the
Office of the Commissioners of Patents on the 30th January 1878.
WILLIAM BROOKES, of No. 62, Chancery Lane, in the County of Middlesex,
Patent and Registration Agent. "IMPROVEMENTS IN APPARATUS EMPLOYED IN
SEWING." (A communication from abroad by Messieurs Rosenberg and Fraenkel,
of Elsasser Strasse, Berlin, in the Empire of Germany, Manufacturers:)
The object of the improvements is to facilitate various operations of sewing by
mechanical means, and they are especially adapted to sewing leather and other
heavy fabric or material.
In carrying out these improvements facility is obtained for adjustment of the
position of the needle in relation to the shuttle, according to the size or strength of
the needle and thread for the time in use, by the application to the vertical traverse
bar of a horizontal adjustable holder. This holder is formed with dovetail or other
suitable edges for the traverse of it transversely in correspondingly formed parts in
the vertical bar. A set screw holds the parts in correct relation as adjusted.
In order to facilitate change of thread to supply the needle for variety of color,
or to save time in the event of one thread being used up, two separate bobbins are
employed with frictional pressure to adjust the winding off therefrom, and
adjustable friction pressure is applied to both threads between the bobbins and the
needle.

page_text: A trough for pitch or such like material is applied in position for the passage
through it of the thread as it passes to the needle; also there is provided a lamp
beneath this trough capable of adjustment in position to regulate the heat and con-
sequent degree of fluidity to such pitch or such like material.
Another lamp is applied adjustable in position to maintain the shuttle and
supporting parts with the thread working with the shuttle thread at the desired
temperature.
A lubricating brush is applied to be brought into position when required to
lubricate and cool the needle, and thereby facilitate its passage through the material
to be sewn, such brush being carried by a lever operated by a cam or tappet or such
like motion.
To avoid injury to the surface of glazed or other leather or material with a high
surface finish there is substituted for the notched, roughened metal surface of the
feeder a surface composed of india-rubber or such like material to such feeder.
To facilitate the sewing through of surfaces of leather or other material of an arched
section, or material thicker in the middle than at other parts of the width thereof,
there is applied adjustable feet of different sizes and curves corresponding with the
size and extent of curvature for the time to be operated with, and each adjustable
to the sewing therein of more than one row of stitches; also, in the case of sewing
in, to enclose cords or round surfaces, the "foot" is formed in two parts, which are
held together by spring pressure, and yet so as to yield to slight variations in the
character or thickness of the cord to be enclosed, by which the enclosing material
or fabric will be sewn without necessarily sewing through the cord. A stationary
and adjustable plate on the table aids the correct working of this foot.
To facilitate the sewing of a covering of one leather over another, the leather or
material to be enclosed is acted upon by the edge of one plate which is adjustable
between two other enclosing plates, which enclosing plates act on the edges of the
enclosing material whilst this enclosing material is held up to them by another
plate. Leather or other material thus covered by leather or other material, and
sewn, is applicable to a variety of purposes. A spring plate also acts as a clip to
the "foot' to retain the parts in position.
For piping or welt or such like work the piping or welt or such like material,
folded as desired, is passed between plates capable of being regulated in relation to
each other, or one of which plates embraces such material and retains it folded,
whilst the other acts internally. The "foot" acts in keeping the other parts in
position as sewn.
For binding curved and angular forms an adjustable "foot" with inclined upper
and lower surfaces thereto is adapted to the forms to be sewn round, such foot
acting with a revolving or wheel guide, supported with capabilities for ready
adjustment.
By the use of change wheels the speed of working may be varied to the character
of the work under operation.