Improvements in Appliances for Holding Fabrics in a Stretched or Distended Condition, especially applicable for Holding them while being Embroidered.
Year: 1890

page_text: Date of Application, 27th Oct., 1890
Complete Specification Left, 27th July, 1891-Accepted, 12th Sept., 1891
PROVISIONAL SPECIFICATION.
Improvements in Appliances for Holding Fabrics in a Stretched or
Distended Condition, especially applicable for Holding them
while being Embroidered.
A communication from abroad by MARTIN HENRI RUMPF, of 84, Rue Hauteville,
Paris, in the Republic of France.
1, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for
Foreign Patent Solicitors, 6, Lord Street, Liverpool, and 6, Bank Street, Manchester,
both in the County of Lancaster, and 323, High Holborn, in the County of
Middlesex, Civil Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to frames for holding fabrics in a stretched or distended
condition, the primary object of the invention being to provide a frame for
holding a fabric while being embroidered, such frame being intended mainly for
use with sewing machines adapted for embroidering. The invention provides a
simple and compact appliance whereby fabrics of any desired thickness, from the
lightest to the heaviest, can be readily and quickly distended and held firmly in
the distended condition whilst being operated upon.
The appliance comprises two rectangular frames, (preferably metallic) one rigid
and the other capable of extension, the two corresponding sides of the frames
being arranged in such a way as to fit one within the other. The rigid frame,
preferably the under frame, has two of its opposite edges flat and the two other
edges bent up near the top, whilst the second or extensible frame (preferably the
upper one) has two corresponding edges arranged in such a way as to fit into the
concave or undercut parts of the upturned edges of the under frame.
For this purpose, one of the sides of the upper frame is movable and secured
by means of screws capable of being revolved in lugs, arranged on the fixed sides
of the said upper frame, and engaging in similar lugs fixel on the said movable
side or vice versa.
The fabric having been placed on the under frame, it will suffice to cover it by
meaus of the extending upper frame and to screw up the pressure screws aforesaid
to cause the two sides, or parts of the same, in separating one from the other, to
stretch the fabric and hold it firmly, the degree of extension of the upper frame
being sufficient to allow of the employment of very thick fabrics, and even of
leather and other supple materials.
Each of the fixed sides of the upper extensible frame carries a thin and flexible
plate, having, preferably, a toothed part, so arranged that, at the moment when
the two frames approach or are pressed towards one another, the flexible teeth of
this toothed part force the fabric to stretch itself on the snooth sides of the
under frame.
The extending of the upper frame may, if desired, be produced by means of
blade springs attached to the extremities of the fixed sides of the upper frame or
by means of eccentrics or other mechanical equivalents.
The under frame may be extensible, and the upper rigid, if desired.
The appliance may be provided with rollers upon which it may be readily
moved from point to point on the table as the work proceeds. Moreover, it may
be connected with any suitable guiding device whereby its movements may be
controlled during the embroidering operation.
It will be obvious that the appliance is capable of general application whenever

page_text: a fabric is to be rapidly stretched or distended, whether for the purpose of
embroidering such fabric or otherwise.
Dated this 27th day of October 1890.
WM. P. THOMPSON & Co.,
Agents for the Applicant.
DIMLTATIOA.
Improvements in Appliances for Holding Fabrics in a Stretched or
Distended Condition, especially applicable for Holding them
while being Embroidered.
A communication from abroad by MARTIN HENRI RUMPF, of 84, Rue Hauteville,
Paris, in the Republic of France.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.L.M.E., of the Agency for
Foreign Patent Solicitors, 6, Lord Street, Liverpool, and 6, Bank Street,
Manchester, both in the County of Lancaster, and 323, High Holborn, in the
County of Middlesex, Civil Engineer, do hereby declare the nature of this
invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement, reference being had
to the accompanying sheet of drawings and to the figures and letters of reference
marked thereon, and on which sheet :―
Figure 1 is a plan view of an appliance made according to this invention.
Figures 2 and 3 are respectively a transverse section and a longitudinal
section of the frame for holding the fabric.
Figure 4 shows wo modifications of the construction of the frame.
This invention relates to frames for holding fabrics in a stretched or distended
condition, the primary object of the invention being to provide a frame for
holding a fabric while being embroidered, such frame being intended mainly for
use with sewing machines adapted for embroidering. The invention provides a
simple and compact appliance whereby fabrics of any desired thickness, from the
lightest to the heaviet, can be readily and quickly distended and held firmly in
the distended condition whilst being operated upon.
The appliance comprises two rectangular frames (preferably metallic) one rigid
and the other capable of extension, the two corresponding sides of the frames
being arranged in such a way as to fit one within the other. The rigid frame A
preferably the under frame, has two of its opposite edges a flat and the two other
edges bent up near the top, whilst the second or extensible frame (preferably the
upper one) B has two corresponding edges d d'arranged in such a way as to fit
into the concave or undercut parts of the upturned edges of the under frame.
For this purpose, one of the sides of the upper frame B is movable and
secured by means of screws e capable of being revolved in lugs arranged on the
fixed sides c of the said upper frame, and engaging in similar lugs fixed on the
said movable side d' or vice versa.
The fabric having been placed on the under frame A it will suffice to cover it
by means of the extending upper frame B and to screw up the pressure screws e
aforesaid to cause the two sides d d or parts of the same, in separating one from
the other, to stretch the fabric and hold it firmly, the degree of extension of the
upper frame being sufficient to allow of the employment of very thick fabrics, and
even of leather and other supple materials.
Each of the fixed sides cc of the upper extensible frame B carries a thin, and
Hexible plate g having, preferably, a toothed part, so arranged that, at the moment
when the two frames approach or are pressed towards one another, the flexible
teeth of this toothed part force the fabric to stretch itself on the smooth sides a a
of the under frame.
As shown on Figure 4 the extending of the upper frame may, if desired, be
produced by means of blade springs attached to the extremities of the fixed

page_text: sides ce of the upper frame B or by means of eccentrics or other mechanical
equivalents, as shown on the right of this figure.
The under frame may be extensible, and the upper rigid, if desired.
The appliance may be provided with rollers upon which it may be readily
moved from point to point on the table as the work proceeds. Moreover, it may
be connected with any suitable guiding device whereby its movements may be
controlled during the embroidering operation.
It will be obvious that the appliance is capable of general application whenever
a fabric is to be rapidly stretched or distended, whether for the purpose of
embroidering such fabric or otherwise.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, as communicated to me
by my foreign correspondent, I declare that what I claim is :-
or
1. The improvements in appliances for holding fabrics in a stretched
distended condition consisting in the employment in such appliances of a frame or
square formed of two rectangular parts, one rigid and the other capable of
extension, the rigid part having two of its opposite sides flat and the two others
turned inwards so as to receive the corresponding sides of the extensible part,
substantially as hereinbefore described and shown
2. In combination with two frames such as described in Claim 1, a flexible
metallic plate or strip, (with or without inclined teeth), fitted on each side of one
of the frames and intended to stretch fabrics of any thickness on the flat sides of
the other frame substantially as hereinbefore described and shown in Figures 1
and 2 of the drawings.
3. In combination with the two frames such as hercinbefore described; the
device for effecting the approach or the separation of the sides of the distending
frame; substantially as described above and shown in Figures 1, 2 and 4 of the
drawings annexed hereto.
Dated this 24th day of July 1891.
WM. P. THOMPSON & Co.,
Agents for the Applicant.

page_text: Date of Application, 27th Oct., 1890
Complete Specification Left, 27th July, 1891-Accepted, 26th Sept., 1891
PROVISIONAL SPECIFICATION.
Improvements in Pantograph Guiding Devices, especially applicable
for Guiding Embroidery Frames.
A communication from abroad by MARTIN HENRI RUMPF, of 84, Rue Hauteville,
Paris, in the Republic of France.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E. of the Agency for
Foreign Patent Solicitors, 6, Lord Street Liverpool, and 6, Bank Street,
Manchester, both in the County of Lancaster, and 323 High Holborn, in the
County of Middlesex, Civil Engineer, do hereby declare the nature of this invention
to be as follows:-
This invention relates to improvements in pantograph guiding devices, having
for their principal object the affording of facilities, whereby an embroidery frame-
especially such is is used in connection with a sewing machine-may have its
movements so guided and controlled with respect to the pattern to be embroidered,
that said pattern is reproduced on a more or less reduced scale on the fabric carried
by the frame.
The device is so constructed that the scale or proportion, to which the pattern
to be embroidered is to be reproduced, may be regulated as desired, the guiding
device being also capable of great extension.
The device is mounted upon or connected with a fixed piece intended to be fitted
on to the table of a sewing machine (if used in connection with such a machine).
This fixed piece has three joint or pivot points to which are connected two or
more of the angle pieces of the jointed guide.
The angle pieces have the same dimensions as the fixed supporting piece above
mentioned, and bave respectively joints or pivot points corresponding exactly to
the points of the said support, and these three similar parts are connected at their
pivot points by means of connecting rods the length of which is the same for each
of the angle pieces, and care must be taken that the first of these pieces can fit on
the fixed supporting part, and that the second piece can, in its turn, fit on the first
piece, all in such manner that their pivot points coincide.
Further, the three pivot points of the support can be placed at any angle
with respect to each other, it being sufficient if pivot points on the movable pieces
coincide exactly with those of the support.
The above described jointed arrangement has the following important charac-
teristic, namely, that, whilst capable of traversing freely in every direction, the
pieces remain always parallel to each other in any position they may occupy. The
embroidery frame or other piece to be guided is fixed by means of screw bolts,
pins, or other suitable means to the second angle piece, that is, the one furthest
from the fixed supporting piece. In order to obtain a reduction from the size of
the model, three branches or levers are fitted to the above arrangement of jointed
angle pieces and are arranged in the following manner :-
The connecting rod or link of one of the levers is prolonged outwards to a
certain extent and forms one of the principal levers of the guide, the other lever
being jointed at the lower end of the second angle piece. The two levers are con-
nected by pivot joints with an arm carrying the tracing point in such a way as to
form a flexible parallelogram or pantograph.
Further, the first lever could be also formed by prolonging the intermediate or
upper connecting rods or links, but, in this case, the second lever must be
respectively connected with the middle pivot point or the upper one of the second
angle piece.

page_text: As in this guiding appliance, the relation between the distances traversed by
the embroidery frame and by the tracing point is exactly proportionate to the
lengths of their respective leyer arms, it suffices, in order to obtain a given amount
of reduction, to form, in the principal levers as well as in the pointer arm, a
certain number of apertures for the purpose of receiving the joint pins of these
three parts.
It must however be noted that whatever position may be given the pointer arm,
its length must always be such that its effective length shall equal the effective
length of the first lever.
The total displacement of the embroidery frame when regulated by the arrange-
ment of jointed pieces above described amounts to four times the length of the con-
necting link above named, and the displacement would amount to six times this
length if three movable angle pieces were used, the number of the levers forming
the pantograph portion of the device being increased accordingly and so on for
any number of angle pieces.
Guiding devices can thus be arranged of small dimensions and consequently
little in the way, although they allow of a sufficiently large surface being
-embroidered without rendering it necessary to alter the position of the fabric in
the machine. It is obvious that this sort of pantograph guiding device is not
limited in its application to an embroidery frame for use with a sewing machine
as above described, but that it can be equally well applied to ordinary circular
looms used for embroidery for guiding the material therein. Moreover, it may
be employed for other purposes quite apart from embroidery, where a guiding
appliance of this description is required.
tober 1890.
WM. P. THOMPSON & CO.,
Agents for the Applicant.
COMPLETE
SPECIFICATION.
Improvements in Pantograph Guiding Devices, especially applicable
for Guiding Embroidery Frames.
A communication from abroad by MARTIN HENRI RUMPF, of 84, Rue Hauteville,
Paris, in the Republic of France.
I, WILLIAM PHILLIPS THOMPSON F.C.S. M.I.M.E. of the Agency for.
Foreign Patent Solicitors 6; Lord Street, Liverpool, and 6, Bank Street,
Manchester, both in the County of Lancaster & 323, High Holborn in the
County of Middlesex, Civil Engineer, do hereby declare the nature of this
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 relates to iniprovements in pantograph guiding devices, having
.for their principal object the affording of facilities, whereby an embroidery frame-
especially such as is used in connection with a sewing machine-may have its
movements so guided and controlled, with respect to the pattern to be embroidered,
that said pattern is reproduced on a more or less reduced scale on the fabric
carried by the frame.
The device is so constructed that the scale or proportion, to which the pattern to
be embroidered is to be reproduced, may be regulated as desired, the guiding
-device being also capable of great extension.
Reference being had to the accompanying sheet of drawings and to the figures
and letters of reference marked thereon:-
Figure 1 is a view showing the principle of construction of the improved
pantograph guiding device.
Figure 2 is a plan view of the guiding device developed.
Figure 3 is a view showing the pantograph guiding device in its application for
use in connection with an embroidery frame, the embroidery frame being one

page_text: constructed in accordance with English Letters Patent No. 17147 of October 27,
1890.
The device is mounted upon or connected with a fixed piece C, intended to be
fitted on to the table of a sewing machine (if used in connection with such a
machine). This fixed piece, as shown in the drawing, Figure 1, has three joints
or pivot points D' E' F', to which are connected two or more of the rigid angle
pieces G H of the jointed guide.
The angle pieces G F have the same dimensions as the fixed supporting piece C
above mentioned, and have respectively joints or pivot points D E F and D³ E³ F³
corresponding exactly to the pivot points D E F of the said support C, and
these three similar parts C G H are connected at their pivot points by means of
connecting rods D F, the length of which is the same for each of the angle
pieces G and E, and care must be taken that the first of these pieces, G, can fit
on the fixed supporting part C, and that the second piece, H, can, in its turn, fit on
the first piece, G, all in such manner that their pivot points coincide.
Further, the three pivot points D'E' F' of the support can be placed at any
angle with respect to each other, it being sufficient if the movable pieces G and H
coincide exactly with such angle.
From a theoretical point of view, the number of these angle pieces G and H
could be increased, each of them standing in the same relation to the next one as
the support C does to the first angle piece G.
The above described jointed arrangement has the following important
characteristic, namely, that, whilst the piece H is capable of traversing freely
in every direction, the pieces G and H remain always parallel to each other and
to the piece C in any position they may occupy.
In the arrangement shown on the drawings, which has two movable pieces G
and H, the embroidery frame A B; Figure 3, or other piece to be guided is fixed
by means of screw bolts, pins or other suitable means to the second angle
piece H, that is, the one furthest from the fixed supporting piece, and it is evident
that, if the indicating point of the guide were connected to this piece H, a piece
of embroidery would be obtained of the same size as the model. In order to
obtain a reduction from the size of the model three branches or levers M N P
are fitted to the above arrangement of jointed angle pieces and are arranged in the
following manner :-
The connecting rod or link D of one of the pieces is prolonged outwards to a
certain extent, and forms one of the principal levers M of the guide, the other
lever N being jointed at the lower end of the second angle piece H. The two
levers are connected by pivot joints OO¹ with an arm P carrying the tracing
point pin such a way as to form a flexible parallelogram or pantograph.
Further, the first lever M could be also formed by prolonging the intermediate
or upper connecting rods or links E or F, but, in this case, the second lever N
must be respectively connected with the middle pivot point E³ or the lower one F³
of the second angle piece H.
As in this guiding appliance, the relation between the distances traversed by the
embroidery frame and by the tracing point is exactly proportionate to the lengths
of their respective lever arms, it suffices in order to obtain a given amount of
reduction, to form, in the principal levers M and N, as well as in the pointer arm P,
a certain number of apertures O O' for the purpose of receiving the joint pins of
these three parts.
It must, however, be noted that, whatever position may be given to the joints of
the pointer arm P, the positions must always be such that its effective length O p
shall equal the effective length O D' of the first lever M.
Finally, it may be easily seen from Figure 2 that the total displacement of the
embroidery frame, when regulated by the arrangement of jointed pieces above
described amounts to four times the length of the connecting links DEF above
named, and the displacement would amount to six times this length if three
movable angle pieces were used, the number of the levers forming the pantograph

page_text: portion of the device being increased accordingly, and so on for any number of ·
angle pieces.
Guiding devices can thus be arranged of small dimensions and consequently be
little in the way, although they allow of a sufficiently large surface being
embroidered without rendering it necessary to alter the position of the fabric in
the machine. It is obvious that this sort of pantograph guiding device is not
limited in its application to an embroidery frame for use with a sewing machine as
above described, but that it can be equally well applied to embroidery looms for
guiding the material therein. Moreover, it may be employed for other purposes,
quite apart from embroidery, where a guiding appliance of this description is
required.
Having now particularly described and ascertained the nature of the said inven
tion and in what manner the same is to be performed, as communicated to me
by my foreign correspondent, I declare that what I claim is :-
1. The improved arrangement of pantograph guiding device, consisting in such
being formed of at least three rigid parts or angle pieces, each of them being
connected to the succeeding one by three connecting bars of identical length, the
first of such angle pieces forming the fixed support of the guide and the last
receiving one of the sides of the frame containing the material on which a model
is to be reproduced, substantially as hereinbefore described and shown on the
accompanying sheet of drawings.
2. In combination with the jointed device such as described in Claim 1, an
arrangement of a jointed parallelogram, one of the levers M of which is formed by
the prolongation of one of the connecting rods (say D) of the first piece or angle
bar of the abovenamed device, and the other lever N is jointed at a corresponding
point, say D³, of the last rigid piece H, of this device, these two levers being
jointed to an arm P carrying the indicating point so as to form a reducing
parallelogram substantially as herein before described and shown on the annexed
sheet of drawings.
3. In pantographic devices, more especially for use for embroidery purposes, the
employment of a jointed guide directing the frame which holds the fabric or its
equivalent, and comprising a jointed device arranged as described and a supporting
and guiding parallelogram arranged as above, and in which the levers M and N
and the arm P have holes bored at corresponding distances in each of them for
the purpose of enabling the degree of reduction of the pattern which is to be
reproduced to be varied as may be desired, substantially as herein before described
and shown in Figure 3 of the annexed drawings.
Dated this 22nd day of July 1801
WM. P. THOMPSON & Co.,
Agents for the Applicant.