Improvements in Embroidering Apparatus for Double Quilting Stitch Sewing Machines.
Year: 1886

page_text: Improvements in Embroidering Apparatus for Double Quilting
Stitch Sewing Machines.
I, JULIUS WILHELM VON PITTLER of Leipzic in the Kingdom of Saxony and
German Empire Engineer do hereby declare the nature of my said invention
for "IMPROVEMENTS IN EMBROIDERING APPARATUS FOR DOUBLE QUILTING-STITCH
SEWING MACHINES and in what manner the same is to be performed to be
particularly described and ascertained in and by the following statement :-
כי
The improvement relates to new arrangements, as represented in Figs. 1 to 3,
of the lever with which the frame A is connected and by means of which it can
be moved by a pantograph in all directions.
The lever mechanism and the conducting of the frame is represented in Fig. 1
in the following arrangement:
Frame A is connected with the two guides a a¹ (n) which with their other ends
stand in connection with a guide-rail 6. A slit c is made in the latter and in it
works the pivot d of the two connected levers e and f. The guide lever fis
connected by means of pivot g, which likewise slides in a slit h of the guide-rail i
with a perfectly similar lever f' which in its turn is in connection with the
pantograph B and the guide rail b.
By using the slit guide-rails and the free and unimpeded motion of the
frame A is obtained for they tend to keep up a constantly uniform relation of the
levers a e, ff and e¹ to each other.
In this lever mechanism the pantograph B forms an integrant part as its two
arms m and n replace the levers a and e¹. This is however not absolutely
necessary and the frame can be shoved by the pantograph B at any other place, as
is indicated by the dotted lines, but in this case the arms m and of the
pantograph B must be replaced by similar levers a¹ and e¹.
The guide-rail is fastened either to the ground-plate of the sewing machine or
in some other practical way to the table of the sewing machine.
The arrangement represented in Fig. 2 is substantially the same excepting that
in this case the guide-rail is not used which limits the measure in which this
arrangement can be used, as the relatives of the levers to each other do not remain
equal whenever the outstroke of the point k of the pantograph B is too great.
In the arrangement of the lever-mechanism represented in Fig. 3 it will be seen
that the mechanism is arranged in the shape of two perpendicularly counteracting

page_text: parallelograms C and D in which the leg of the parallelogram C is stationary,
while the frame A is fastened to the leg o of parallelogram D.
Pantograph B is fastened above the parallelograms C and D and shoves the
frame A by means of the leg o of parallelogram D according as the embroidery
requires.
The frame A consists in itself of the three rings p, and ring p is cut off by
half and is connected with the lever mechanism or the pantograph.
The second ring 7 is cleft and is provided with a rough inside and can be drawn
together by means of screw s. The inner ring is quite smooth and simple. If
cloth has to be stretched in the frame it is first laid round the smooth ring and
then the second ring is shoved over it. Owing to the rough inner side of the
latter it carries the cloth with it and draws it tight; ring g is then drawn
together by screw s, and the rings thus connected are jammed together with the
cloth into ring p. which is then connected with the lever-mechanism and the
embroidering can commence at once.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I' declare that what
I claim is
An embroidering apparatus for double quilting-stitch sewing machines having
which frame A is shoved in a horizontal or inclined direction by a pantograph B
firstly by means of a lever-mechanism in which two guides and working
perpendicularly to each other serve to guide the lever, secondly by a pantograph
by means of a lever-mechanism with one guide i; thirdly by a lever-mechanism
in the shape of two parallelograms C and D counteracting each other; a frame A
in which the outer ring is provided with a rough inner side for the purpose of
stretching the cloth (canvas) tight.
בד
1802