IMPROVEMENTS IN EMBROIDERING MACHINES
Year: 1879

page_text: PROVISIONAL SPECIFICATION left by Jean Jacques Ebneter at the Office
of the Commissioners of Patenta on the 1st July 1879.
=
:
JEAN JACQUES EBNETER, Manufacturer, of the Canton of St. Galle, in the
Republic of Switzerland. "IMPROVEMENTS IN EMBROIDERING MACHINES,"
My improved embroidering machine is intended to produce crotchet chain stitch
for making embroidered curtains, or for other purposes; it is constructed to .
embroider a length of 3 meters, 60 centimètres, and with this view it is provided
with a great number of needles, according to the number of times that the design
is to be produced simultaneously on the tissue to be embroidered.
T
Fig. 1 of the Drawings is a front view, and Fig. 2 a plan; a, a³, frame supported
by the feet all; it gives access to a rectangular frame b, in which the tissue c to be
embroidered is stretched by rollers d, d, and guide rods e, e, the distance between
which is varied by means of the screw f and f¹; this frame b can rise and fall
vertically with a bar g guided by rollers g' and slides g; this
to steel blades which embrace the pulley ' placed on the axis
furnished with steel blades terminated by counterweights
frame b
bar is suspended
"; i, pulleys
to equipoise the
The horizontal movement of the frame b is effected by the rollers J, J', mounted
on the supports, and running on bars m, m²; n, wooden board belonging to
the frame b, to receive the pattern design to be embroidered; o, o', metal plates
fixed to the frame b, receiving the action of the striated wheels p, p', of the panto..
graph, which work, first, by the cog wheels a mounted on the shaft q' governed by
the pulleys q; second, by the wheels r and crank 8, whose axis bears the index
serving to follow the design according as the attendant turns the crank s in one
direction or the other.
g
The wheels turn the shaft and the wheels t¹ with inclined teeth which
actuate the pantograph. Similar wheels turn the hooked needles placed in
supports fixed on the frame a
Three supports furnishod with piecas for actuating their needles are shown in the
Drawing, and the position of the others is indicated by the lines v'; x is another
support fixed in front of each needle which encloses a socket turning on a screw,
giving passage to a thread from a bobbin. This socket is actuated by a shaft i
with a circular and rectilineal backward and forward motion.
The wheels y governed by cranks a produce the circular movement in accord
with the pantograph, and the wheels s produce the rectilineal movement by the
crank s'.

page_text: The shaft t of the pantograph also turns the needles which have a rectilineal
backward and forward movement produced by the levers A mounted on the
axis B, which can oscillate by a lever set in motion by means of the eccentric C.
Levers similar to those A aro placed on an axis D which can oscillate by a lever, and
by the eccentric E to lead the guards to the rear, which give passage to the needles,
and which press the tissue during the formation of the stitch; F, piece to support
the pressure of the pantograph on the plates o, o; they can be brought nearer
together or be separated by means of a handle F' fixed on the shaft F. These
pieces F may be replaced by plain or striated wheels like those p, p', working in
the same manner to command the plates o, o¹, on the two faces; G, pedal for dis-
placing the driving strap of the pulleys q" by means of the pieces H, H¹; I, long
screw which turns by means of pulleys and straps J; it bears a cam L and can be
displaced when a thread breaks to stop the machine by the cam encountering the
end of the shaft L', which descends and communicates by means of the piece M
with the ungearing pieces H, H'.
The screw I is displaced by the action of a jointed piece which rests on the
thread and whose end falls in the fillet of the screw when a thread breaks.
K, K, two small levers set in motion by a handle K' mounted on the same axis,
and united by a metal wire stretching or slackening the threads to be embroidered.
The important features of my Invention consist, 1st., in the construction of an
embroidering machine with a great number of needles by means of a pantograph,
acting simultaneously on the needles to cause them to turn at the required time,
and on the moveable frame bearing the tissue to direct it according to the design
to be embroidered; 2nd, in grouping the parts constituting the divers movements
of this machine and its action.