Year: 1895

page_text: Date of Application, 15th June, 1895-Accepted, 9th Nov., 1995
I, ISIDOR -NASCH, of 251 Whitechapel Road, in the County of Middlesex,
Engineer, do hereby declare the nature of this invention, and in what manner thie
same is to be performed, to be particularly described and ascertained in and by the
following statement:-
::
This invention 'relates to improvements in book sewing machines, and refers
particularly to that 'type of machine for which Letters Patent liave been granted
to me, numbered 9806, dated 10th June 1891, and entitled "An improved machine
for sewing together the sheets or signatures of books." In the Specification and
drawings of the above recited Patent I have described 'and shewn a machine by
which the sheets or signatures of books are sewn together in a manner resembling
a hand sewn book; 'the' work accomplished by it, however, being "stronger, tighter,
and more regular. Further advantages being that the book opens flatter, and with
a much better spring than books sewn otherwise. Again, the signatures require no
cutting at the edges, and should a stitch be cut or broken it will not loosen a sheet.
The essence of the invention consisted in operating the needles singly and
separately, allowing thereby the sheets or signatures 'to be stitched alternately in
different places, and thus reducing 'considerably the thickness of the back of the
book as compared with books sewn by other machines.
Whilst the machine as described in my aforesaid Specification of Patent (in
which the stitches are spaced at intervals, and in different places in alternate
signatures) is perfect in its work, and 'accomplishes all that is required for the
purpose of ordinary printed book sewing, it is found that for¹the purpose of sewing
invellim, such as for instance in account books and the like, a stitching.is
preferred which shall extend continuously from end to end of the sheet or
signature. To accomplish this with the machine described in the Specification of
my aforesaid Patent is the object of 'this my present invention; and whilst such³a.
machine may be used as heretofore for ordinary printed book sewing, it may at
will by a slight alteration 'and'adjustment of certain parts of the mechanism as
will be hereinafter 'particularly described, be converted into a machine for sewing
in vellum, and in which the stitching 'may be continued from end to end of the
sheet or signature.
)
Further, in accordance with this my 'present invention, means are provided for
causing a lateral movement of the needle carriers and for regulating the extent of
such lateral movement so that the cords or bands (of whatever width they may be)
employed for extra strength in book binding may be stitched over. And, again,
according to this invention I provide a device by which the sheets or signatures.
when placed upon the feeding table are firmly held in position whilst being stitched,.
and when stitched the same device serves to carry the sewn sheet or signature
on to the receiving bed or stitch board, all as hereinafter more particularly
described.
37
Again, in accordance with this my present invention, I construct and 'arrange
the "take up
or thread controlling mechanism in a novel and peculiar manner
whereby the amount of thread supplied to the needle is regulated automatically all
according to requirements at different periods of the stitching of the signatures;
and, lastly, I have a novel method and 'means of keying or attaching the cams or
wheels upon their carrying or supporting shafts or spindles.

page_text: And in order that this my invention may be fully understood and readily
carried into effect I will now proceed to describe same with reference to the
accompanying drawings in which similar letters of reference indicate like parts
throughout the figures.
с
Figure 1 is a perspective view of the whole machine. a is the feeding table
upon which is placed the sheet or signature to be stitched. This table a is carried
by two supporting arms bb carried upon the shaft c which is free to revolve in
bearings formed in the standards d'd of the machine. Carried by this shaft c is an
extension or arm e preferably furnished with roller e which is acted upon by the
rim cam f. As this cam f revolves and its convex surface bears upon the roller e' of
the arme the feeding table a is kept up in the position shewn in Figure 1 of the
drawings, and whilst in that position the needles g¹² pierce the signature, and the
loopers h¹ take the threads and carry them respectively to the hooks which in
their turn have pierced the signature. The cam has then revolved sufficiently
to allow the concave portion of its rim surface to bear upon the roller e¹ and the
table a has in consequence assumed the open position shewn in Figures 2 and 7,
and another signature is placed upon it; the cam f continuing its revolution, its
opposite convex surface then bears upon the roller el and brings the table a again
into the position shewn in Figure 1 when the needles g pierce the signature and
the loopers carry the threads respectively to the hooks i, and the table again
retires for the reception of another signature.
U
3
'
With this movement it will be seen that the signatures are alternately stitched in
different places, the first stitches being from to i, and from g² to ¹; and the
second stitches from g³ to i¹, and from 2 to i; and so on alternately. Now a
stitching extending continuously from end to end of the signature it is obvious may
be formed by keeping the signature upon the feeding table a in the position shewn
in Figure 1 of the drawings sufficiently long to allow of all the needles making
their various stitches therein. This I accomplish by causing the cam, when
desired, to act only once, instead of twice as above described, in each revolution;
and when it is required to sew continuously from end to end, such as when stitching
account books and the like, I fit in one of the concave portions of the cam fa
filling piece1 (see Figure 5). Said filling piece f¹ may be made to screw into
the cam and be readily and easily attached and detached. It will be at once seen
that when said filling piece is fitted into the cam, the table a will only open once
for each revolution of the can.
In Fig. 7 (an end view of the machine) is illustrated another means of fitting.
and applying the cam f. In accordance with this arrangement and to obviate any
necessity of stopping the machine whilst attaching or detaching the filling piece,
and to permit of an instantaneous change from or to the alternate and continuous
styles of stitching I mount the cam fupon the end of the shaft k and instead of
having and making use of the separate filling piece f' above described I form the
cam (see also Figs. 7, 8, and 8A) with a semicircular piece 2 cast or otherwise
attached thereto. This in conjunction with suitable mechanism to be hereinafter
explained answers the purpose of the filling piece f'. The portion f² corresponds
in radius with the convex edges of the cam f and is so placed or situated as to
coincide with one of the concaves of the cam f. Pivotted upon the arm e I have
another arm e furnished with roller e³ at one end for operating upon the periphery
of the semicircular portion f2 of the cam f. Upon the end of the shaft C I mount
the pinion P. This pinion is toothed for a portion of its periphery and is furnished
with a tail piece P¹ which acts upon the end of the second arin e aforesaid as
required. Operating the pinion I have a rack R carried upon the end of a lever L
mounted at its upper end upon the standard d. An extension E of the lever L
serves as a handle. When it is desired to sew the signatures alternately in different
places the handle E is depressed by the operator (see Fig. 9) the pinion Passumes
the position shewn and the roller end e³ of the arm e² is depressed and does not
come into operation. Then the concave portions of the can in each revolution
of the cam operate the roller e¹ of the arm e twice. and the table a is consequently

page_text: withdrawn twice from the needles. But when it is desired to sew the signature
throughout and it is consequently required to keep the table a in position against
the needles sufficiently long to allow of all the needles making their stitches in
the same signature the operator raises the handle E to the position shewn in Fig. 7.
The pinion P is then partially revolved and the tail piece P¹ acting upon the end
of arm e² raises its roller e³ into position for being acted upon in the revolutions of
the cam by the semi-circular portion f2 of said cam f. It will readily be seen
that the table a will then only open once in each revolution of the cam f and
thus permit of the signature being stitched throughout its length.
g
The shaft carrying the cam falso bears the drums made with cam grooves
in their peripheries in which travel rollers attached to the arms m m actuating the
loopers
A portion of the table a Fig. 1 is shewn broken off that the
loopers may be easily seen. The machine as illustrated in the drawings is
shewn as actuated by a treadle, though of course steam or other power may be
used when convenient. In the drawing n is the treadle, in connection by rod o with
the disc crank p en main shaft q carrying fly wheel r. The main shaft 9 by gearing
(not seen in the view given) causes the counter shafts to revolve, and this in turn
by means of the spur gearing actuates the shaft k and the cams above described.
By the cranks on shaft s, connecting rod s², and disc crank ³ the shaft u*
carrying the discs u is revolved. These discs have cam grooves a cut upon them
in which rollers upon the tail ends of the arms or levers travel, the other ends of
the arms or levers v are attached to the needle bars, and as the cams u revolve so
are the needles actuated. The needle bars are contained in boxes w, the positions
of which are capable of a lateral adjustment to adapt the machine for sewing books
of various lengths, and to allow of any desired length of stitch being employed.
These needle boxes w are carried upon strips or bars w¹ upon which they are
capable of sliding. The centre bar may be formed with a slot as shewn and set
screws may be used for fixing the boxes at any desired or required position.
lateral movement is given to the needles when required to sew over cords or bands
by means of the device particularly shewn in Figures 3 and 4 of the drawings
which are respectively a side elevation and a plan of the same. is a drum carried
upon shaft actuated by the disc crank 5³, which drum is provided with a cam groove
cut upon its periphery. In this groove travels a roller upon the lever or rod y'
bolted or serewed to the intermediate piece y². Above this intermediate piece. is:
pivotted the arm or lever y³ which is connected to the centre strip or bar w¹
carrying the needle boxes or cases w.
A
As the cam y revolves the rod y' has imparted to it a lateral movement which is
communicated to the arm or lever y³ and thus the needles receive a lateral travel
sufficient to carry them over the bands or cords.
The extent of such lateral movement is regulated by the adjusting arm y' which
is provided with a longitudinal slot therein through which the set screw passes.
Said set screw z may be adjusted at any part of the slot desired so as to shorten or
lengthen the lateral traverse or stroke of the needles in accordance with the width
of the bands or cords to be sewn over, or so set them that they have no lateral
traverse as when no bands or cords are used.
As a means of further lateral adjustment of the needles such as when the end
stitches of the signature are required of different lengths to the central stitches, or
of different lengths to one another, the needle bars may be formed with adjusting
heads (see xx
Figures 1 and 6) in which the needles may be inserted and fixed in
any desired position by set screws as shewn.
The device for holding firmly the sheets or signatures in place for stitching and
for carrying the sewn sheet or signature to the receiving board or table, consists of
a rising and falling rod 1, sec Figures 1 and 2, carried by arms 2 pivotted (see
particularly Figure 2 which is an end elevation of the same partly in section) to
the sides of frame of the machine, and which rail rests upon the feeding table a
when same is closed as in Figure 1, and holds the sheet or signature firmly and

page_text: securely in position whilst being stitched. So soon as the table a opens the rail I
falls as shewn in Figure 2 and assists to convey the sewn sheet or signature to the
receiving board or table provided.
Fig. 10 is a side elevational view of one of the thread controlling arms and its
actuating mechanism constructed in accordance with this my present invention.
A is the arm pivotted at B to a' bracket C formed upon back of needle hoxes w.
The oscillations of the thread controlling arm A are obtained from the roller D
carried upon end of the oscillating lever F working in the cam groove G formed
upon the side of the disc u. The oscillating lever F is pivoted at F to the
bracket C and has a curved upward extension. F2 in connection by means of slot F³
and pin A¹ with the arm A. The varying pitch or throw of the cam groove G is
so arranged that the arm A. is caused to be depressed or raised in strokes varying
in length to suit requirements of feed or take up of the thread in accordance with
the movements of the needles and loopers.
As a further means of adjustment have, sliding upon the arm A and capable of
attachment thereto at any desired point by means of set screw A2, a carrier H upon
which there is an eye H₁ and which is provided with a spring H2 formed with
a loop or eye H3 at its end. As will be seen the thread passes from the bobbin
downwards through guide eye K, around the tension T, then upwards through
spring loop H and through eye H and thence downwards to the eye of the needle.
Complete control of the supply and "take up" of the thread is thereby automatically
obtained.
The means I provide in accordance with this invention for securing or keying the
cams or discs to the shafts are illustrated particularly in Figs. 10 and 11 of the
accompanying drawings in which are shewn respectively end and side elevations of
the devices employed.
To permit of the cams, discs,, or wheels, being securely keyed or fixed to the
shaft at any desired position I form a series of longitudinal grooves or slots S
around the periphery of the shaft or spindle the key or cotter S being
correspondingly grooved on slotted upon its under side or bearing surface to fit
within the grooves or slots of the shaft or spindle.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. In book sewing machines the cam actuating the feeding table a constructed
with an attachable and detachable portion f1 arranged and operating substantially
as and for the purposes herein before described and shewn in Figs. 1, 2, and 5, of the
accompanying drawings.
2. In book sewing machines the construction and arrangement of cam with
semi-circular portion 2 attached thereto, and its operating mechanism for actuating
the feed table a; substantially as hereinbefore described and shewn in Figs. 7, 7, 8,
and 8A, of the accompanying drawings.
3. In book sewing machines the mechanism for adjusting the length of the lateral
movement of the needles, substantially as hereinbefore described and shewn in
Figs. 3 and 4 of the accompanying drawings.
4. In book sewing machines the rising and falling rail 1, acting as and for the
purposes hereinbetore described, substantially as set forth and shewn in Figs. 1 and 2
of the accompanying drawings.
5. In book sewing machines the construction of the needle bars with adjustable
heads a substantially as and for the purposes herein described and shewn in
Figs. 1 and 6 of the accompanying drawings.
6. In book sewing machines the
or thread controlling mechanism con-
structed, arranged, and operating, substantially as hereinbefore described with
reference to Fig. 10 of the accompanying drawings.
take up
7. In book sewing machines the method of, and means for, securing or keying

page_text: cams, discs, and wheels, to their shafts or spindles, substantially as hereinbefore
described and shewn in the accompanying drawings.
Dated this 12th day of June 1895.
ISIDOR NASCH,
Per Geo. Coxhead,
Connaught Chambers, 330 High Holborn, W.C.