Improvements in Embroidery-machines.
Year: 1895

page_text: Date of Application, 9th July, 1895-Accepted, 7th Sept., 1895
Improvements in Embroidery-machines.
JOHANN ARNOLD HUFENUS, ALBERT GRÜNINGER and HEINRICH SPÜHL,
all residents of St. Gallen, in the Confederation of Switzerland, Manufacturers do
hereby declare the nature of our said invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement :-
This invention refers to embroidery machines, in which a movable frame carrying
the fabric is operated by the mediation of a pantograph, and in which said fabric
is furnished with embroideries by means of threaded needles passed to and fro
through the said fabric according to the horizontal as well as vertical movements
imparted to the fabric by the pantograph. Our improvements in embroidery
machines of said sort relate to the arrangement of mechanisms, by means of which
cords or laces may be held and guided so as to cause each of the same to be secured
to the fabric by the threads of the threaded needles afore mentioned. The purpose
of our improvements is to provide said fabric instead of with embroideries with
ornamental or decorative work produced from said cord or laces, or instead of solely
with embroideries with said decorative or ornamental work, too, respectively.
In order to make our invention more clear, we refer to the accompanying
drawing, in which similar letters denote similar parts throughout the different views,
and in which :-
Figure 1 is a front-view of the left hand portion of our improved embroidery-
machine,
Figure 2 is a side-view of the same;
Figure 3 is an upper view (partly in section) of some mechanisms for occasionally
displacing the guides for the laces or cords, the section being through a portion of
the main-frame, and taken on line 14-15 of Figure 2.
Figure 4 is an enlarged front-view of some mechanisms for throwing the frame
carrying said guides in gear with, or out of gear from, the mechanisms shown in
Figure 3.
Figure 5 is a front view of some of the said guides, together with a corresponding
number of clamps for holding the upper ends of the cords.
Figure 6 is a front view of some of the spools for holding the stocks of the
cords;
Figure 7 is an upper view of some of said spools;
Figure 8 is a side-view of a guide, a clamp, and a spool, in their proper relation
to each other.
Figure 9 is an enlarged front-view of the device for keeping the cords under
tension, said device being combined with the said spools (Figs. 6-8); and
Figures 10, 104, 11, 11, 12, 124, 128, 13 and 13ª are enlarged views of some
details, which will duly be mentioned in the course of the full description now
following.
The fabric a (Fig. 1) to be furnished with embroideries, or decorative or
ornamental work respectively, is held by the frame a¹, which is in well-known
manner displaced in horizontal as well as vertical direction by means of a
pantograph (not shown). The co-operation of said fabric with the threaded
needles (also not shown because they are perfectly known to every one versed
in the art in question) is just the same, as in any other embroidery-machine.
Whilst, however, in any of the embroidery-machines known up to now, the

page_text: threads themselves are employed for the generation of embroidery, they are with
our improved machine of but secondary importance, in that they are used for securing
the cords or the like to the said fabric. Said cords etc. form in their turn the
ornamental or decorative work proper, but the threads may, as a matter of course,
co-act with the said cords so as to produce any desired pattern. It will be under-
stood, that the pantograph is operated in such a way as to cause the needles to
pierce the fabric alternately at one and the other side of the cord.
The cords are wound upon spools b (Figs. 1, 2 & 6-8) which each are held by a
pin 61 (Fig. 8) fixed to the free end of a lever 62 (Fig. 7) fulcrumed to an angular
support 3 (Figs. 6-8). Either the pin & or the nave of each spool projects beyond
the free side of the latter, or with other words is elongated beyond the free disk of
the respective spool so that said projecting portion may rest upon the angular
support of the respective adjacent spool, and may be held in proper position
thereby. The spools have thus each its own axle, and may each be exchanged
independent of the others.
The supports 3 of each series of spools are fixed to a metal-plate c secured to
a wooden bar c'; the latter is attached to suitable parts of the main-frame d.
The cord-guides e (Figs. 1, 2, 5, 10, 104, 11, 114, 13 and 134) of each series are
fixed to a metal-plate e' secured to a metal-bar e²; the two bars e existing in the
present form of construction (although there may be more than two series of cord-
guides, according to the number of series of threaded needles) are firmly connected
with each other by means of vertical bars e³, so as to form a rigid frame together
with said vertical bars. The frame e² e is held from double-armed levers ff'
(Figure 2) by the mediation of connecting-rods /2, and said levers are secured to a
horizontal shaft f³ (Figs. 1 & 2) arranged at the top of the machine. The arm f
of each of said levers is provided with a weight f* so as to balance the said
frame e² 3.
The ends of the horizontal bars 2 take through guide-pieces g (Figs. 1 & 2) held
from the front-standards of the main-frame d by brackets g*.
It will thus be seen, that the frame e²e carrying the cord-guides e is not perfectly
stationary, but may be moved upwards and downwards, and, in fact, sidewards, too,
in that the connection between the vertical bars e³ of said frame and the connecting-
rods is not a rigid, but a movable one, or, with other words, in that said bars e
are binged to said rods f2. Although in general the movements requisite for
arranging the various cords so as to produce the desired pattern are imparted to the
fabric a only, or to the frame a carrying said fabric respectively, there may now
and then cccur some irregularities, which necessitate a motion of the cord-guides
themselves so as to make up for said irregularities.
In order to cause the frame e²e with the cord-guides e to perform movements of
the desired extent and direction, we have arranged upon the shaft h (Figs. 1 & 2)
a treadle as well as a curved lever 12, which latter is connected by means of a
rod with a rack 4 (Figs. 1-3); said rack is guided by a bracket (Fig. 3)
fixed to the lefthand rear-standard of the inain-frame d. The front-portion of
the bracket forms a bearing for a short shaft, that carries a cog-wheel i as well
as a crank-disk i, the pin 2 of which (Fig. 4) takes into a vertical slot of a bracket i³
attached to the respective vertical bar of the movable frame e² e³.
3
Said shaft may be fixed in position by a hand-screw '. A pawl k (Fig. 4)
fulcrumed at k¹ to said bracket is has a projection k2, which when in normal position
lies directly in front of the middle-portion of the longish slot of the said bracket 1³,
and is held in said position by aid of a by-pawl / (Fig. 4). Each of the two spaces
of the slot remaining uncovered by said projection k² is able to receive the crank-
pin 2. If said crank-pin is in the lower of said two spaces, as is the case in Figure 4,
the position of the movable frame e² e³ with regard to the stationary frame a¹ for
the fabric is such a one, that the guides e are able to co-operate in due manner
with the threaded needles of the embroidery machine, so as to cause the cords to be
secured to the fabric by means of the threads of said needles. If, however, the
cord-guides are not to come into operation, that is to say, if the embroidery-machine

page_text: is to be used for the generation of embroideries proper, the frame ² ³ is then
lowered as much as allowed by the length of the slot in the bracket is. The pawl k
is then freed from the by-pawl 7, and the frame e² 3 may then be drawn downwards
upon the crank-pin, whereafter the pawls k and are brought back into their
former position. The crank-pin 2 takes then through the upper of the two spaces
into which the slot of bracket 3 is divided by the projection k² of the pawl k.
C
In order to hold the free ends of the various cords, there is arranged above the
metal bar e with the cord-guides e a rail m (Figs. 5 & 8), which carries a number
of elastic clamps m¹. These clamps may be of any desired construction. There
are many similar clamps used in offices for holding letters and other papers. Aud,
further, in order to let the cords have a certain tension, we arrange at the rear
side of the metal plate c (carrying the angular supports 63 for the levers & with
the spools b) a number of wire-pieces n (Figs. 1, 6, 7, 8 & 9) of U-like configuration,
the upper end of each of which is bent rearwards. Said wire-pieces n serve as
guides for cylindrical weights n', each of which is at both its ends provided with
disks n². Said weights n' are held by the cords running from the spools to the
cord-guides e, and they are prevented from any sideward displacement by the
disks n², and from any excessive upward movement by the bent-off tops of the wire-
guides n. The cylindrical weights n' may thus rise and fall according to the
movements imparted to the cords by the fabric, but they are perfectly prevented
from leaving their proper places. We prefer to employ for each series of spools
several short weights instead of one long one, as the former arrangement is of
advantageous influence upon the proper working of the machine.
Concerning the cord-guides e themselves, we prefer to use two sorts, which are
distinguished by the configuration of their heads. If the cord to be sewn to the
fabric is but thin, or if a ribbon is to be attached to the fabric, we employ a guide
the head of which (Figs. 10-124) is provided with a U-like slit e. The
tongue e remaining between the legs of the U is bent slightly upwards, as shown
in Figs. 11 and 114; said arrangement is advantageous for the proper guiding of
the cord, or of the ribbon respectively. If, however, the cords are comparatively
strong or thick, we then employ guides the heads of which are provided with
straight, oblong slots e' (Figs. 12B); in either case the head et is so bent, that the
rear edge lies somewhat higher than the front edge, by means of which arrange-
ment the proper guiding of the cords or the like is still more facilitated.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. In an embroidery machine, the combination with the needles of the same, of
cord-guides arranged in close proximity to said needles, and adapted to co-operate
with the same, for the purpose as described.
2. In an embroidery machine, the combination with the needles of the same, of
cord-guides arranged in close proximity to said needles, and adapted to co-operate
with the same; the heads of said cord-guides being horizontally bent off, the rear-
edge of the horizontal part lying higher than the front-edge, for the purpose as
described.
3. In an embroidery machine, the combination with the needles of the same, of
cord-guides arranged in close proximity to said needles, and adapted to co-operate
with the same; the heads of said cord-guides being horizontally bent off, and
having each a slot extending from the left to the right, for the purpose as
described.
4. In an embroidery machine, the combination with the needles of the same, of
cord-guides arranged in close proximity to said needles, and adapted to co-operate
with the same; the heads of said cord-guides being horizontally bent off, and
having each a slot of U-like configuration extending from the left to the right, for
the purpose as described.
5. In an embroidery machine, the combination with the needles of the same, of

page_text: cord-guides arranged in close proximity to said needles, and adapted to co-operate
with the same; the heads of said cord-guides being horizontally bent off, and
having each a slot of U-like configuration extending from the left to the right;
the tongue between the legs of said slot being bent upwards, for the purpose as
described.
6. In an embroidery machine, the combination with the needles of the same, of
cord-guides, arranged in close proximity to said needles, and adapted to co-operate
with the same; said cord-guides being arranged in series, and supported by a
common bar, for the purpose as described.
7. In an embroidery machine, the combination with the needles of the same, of
cord-guides arranged in close proximity to said needles, and adapted to co-operate
with the same; said cord-guides being arranged in series, and supported by a
common bar adapted to be displaced parallelly to the frame for the fabric, for the
purpose as described.
8. In an embroidery machine, the combination with the needles of the same, of
cord-guides arranged in close proximity to said needles, and adapted to co-operate
with the same; said cord-guides being arranged in series, and supported by a
common bar adapted to be displaced parallelly to the frame for the fabric; means
for displacing said bar so as to cause each of its points to describe a circular curve,
for the purpose as described.
9. In an embroidery machine, the combination with the needles of the same,
of cord-guides arranged in close proximity to said needles, and adapted to
co-operate with the same; said cord-guides being arranged in series, and supported
by a common bar adapted to be displaced parallelly to the frame for the fabric;
a crank taking with its pin into a slot of a part connected to said bar; means for
holding said pin within the upper or the lower end of said slot, for the purpose as
described.
10. In an embroidery machine, the combination with the needles of the same, of
cord-guides arranged in close proximity to said needles, and adapted to co-operate
with the same; said cord-guides being arranged in series, and supported by a
common bar adapted to be displaced parallelly to the frame for the fabric ;
a crank taking with its pin into a slot of a part connected to said bar; a pawl
having a projection taking over said slot and adapted to hold said pin within the
upper or the lower end of the said slot, for the purpose as described.
Dated this 9th day of July 1895.
JOHANN ARNOLD HUFENUS,
ALBERT GRÜNINGER,
HEINRICH SPÜHL,
By Geo. H. Rayner.