IMPROVEMENTS IN SEWING MACHINES PARTICULARLY APPLICABLE TO THE STITCHING OR SEWING OF GLOVES, AND OTHER ARTICLES WHERE CIRCULAR OR PARTIALLY CIRCULAR PARTS ARE TO BE CONNECTED TOGETHER
Year: 1861

page_text: PROVISIONAL SPECIFICATION left by Richard Archibald Brooman at the
Office of the Commissioners of Patents, with his Petition, on the
23rd January 1861.-A communication from abroad by Edouard Paul
Lecerf, of Paris.
I, RICHARD ARCHIBALD BROOMAN, of 166, Fleet Street, in the City of
London, Patent Agent, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN SEWING MACHINES PARTICULARLY APPLICABLE TO THE STITCHING
OR SEWING OF GLOVES, AND OTHER ARTICLES WHERE CIRCULAR OR PARTIALLY
CIRCULAR PARTS ARE TO BE CONNECTED TOGETHER," (communicated to me from
abroad by Edouard Paul Lecerf, of Paris,) to be as follows:-
The primary object of this Invention is the construction of a machine by
which the ordinary mantua maker's or glove stitch is produced, whereas in
machines of the ordinary construction the chain and embroidery stitch have
only been produced.
A travelling carriage is made with a semicircular guide free to slide on the
frame of the machine; this guide is pivoted about the same centre as a
partially toothed sector, the untoothed part of which is pivoted about a screw
carrying a handle-kept by-a slide on the sector. A rod in connection with
the handle keeps the sector stationary during the motion of the carriage. The
toothed part of the sector is periodically caused to gear into a toothed wheel
in connection with a guide attached to the under side of the sector, and inter-

page_text: mittent rotary motion is communicated to the toothed wheel by a cam or
projection on the driving spindle, which during its revolution comes in contact
with a stud in connection with a crank attached to the rod on which the said
toothed wheel is mounted; a spring brings the lever back ready for the cam
to strike it at the next revolution of the driving shaft. The travelling carriage
has a lateral motion communicated to it through a toothed wheel on the
driving spindle, gearing into a rack formed on or connected to its under side.
The collar which carries this toothed wheel also carries another wheel, into
the teeth of which a paul jointed to a balance lever takes. One end of
another lever embraces the same stud as the balance lever, and a cam on the
driving spindle works the latter as well as the paul. There is also a pinion on
the driving spindle in gear with a toothed wheel carrying projections, which
through a lever or levers acts periodically on the under side of the carriage,
and imparts a to-and-fro motion to it. This motion takes place in combination
with that of the rack, so that as the paul rises and takes into the teeth of the
ratchet, the latter is advanced one tooth, and the travelling carriage makes a
course, while at the same time the toothed wheel being in gear with the rack
at the under side of the carriage, moves with it, and consequently the lateral
and to-and-fro motions of the carriage are in unison. An arched or bow-
shaped guide is fitted to the toothed sector, the point of which is free to press
on the edge of the sector to hold the material while being stitched; the front
of it is rounded to suit the shape of the finger material or materials being
The guide can be raised from the sector when required by a lever
working about a fixed point, and acting on a projecting part of the guide, the
said lever being moved by another depending from it to the ground, the latter
being worked by a treadle or other appliance. Motion is communicated to
the machine by hand or foot, so that the cams which are mounted on the
driving spindle are caused to revolve. and the shuttle and needle carrier
thereby set in motion in the ordinary manner. The glove or other material
to be stitched is placed beneath the guide, and the carriage has a lateral
motion imparted to it as well as alternate longitudinal motion, in the manner
before described. So soon as the lateral course of the carriage is terminated,
that is, when the centre of the sector is the axis of the machine, the toothed
part of the sector is put in gear with its toothed wheel by means of the handle
before mentioned; the sector then describes a quarter of a circle, but at the
same time preserves its longitudinal to-and-fro motion, which action produces
the sewing of the glove round the points of the fingers; as soon as this is
accomplished the sector is thrown out of gear, the carriage is thrown slightly
sewn.

page_text: forward to return it to its original position, and the operation is continued as
before.
When the machine is required for ordinary straight sewing, the carriage
only requires a lateral motion, and to accomplish this those parts producing
the other motions are removed, or so arranged that they do not come into
action.