proven BOOK DUTching machines.
Year: 1899

page_text: Date of Application, 6th Jan., 1899-Accepted, 11th Mar.,
1899
proven BOOK DUTching machines.
We, EMIL EMCH, of Marzilistrasse 10B, Mechanician, and FRIEDRICHI Boss,
Book Binder, of Metzgergasse 6, both of Bern, Switzerland, 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 a thread stitching machine for books and the like by
means of which signatures can be sewn as by hand.
The annexed drawing represents the machine.
Fig. 3 a plan view.
Figs. 6 to 8 are respec-
Fig. 9 shows a sewn
Fig. 1 being a vertical section. Fig. 2 a front elevation.
Figs. 4 and 5 show detail constructions on a larger scale.
tively sections on the lines -, y, and zz of Fig. 5.
signature in flat position.
of a
On the top between the plates a a¹ forming a saddle a binding clamp
binding arrangement is arranged turning in the bearings 6 and 6¹ and provided
with arms c¹. The clamp is roll like and partially flattened on one side. The
binding clamp can be turned by a hand wheel to raise the parts d and d¹ which
are each provided with a slot e lying in one and the same horizontal and vertical
level and running parallel with the axis of rotation of the binding clamp c.
Another clamp e belonging to the binding arrangement and also roll like, is fastened
on a lever arm f' on a rotary shaft f and also flattened on the side towards the
binding clamp c. It has also the raised parts e and each provided with a
slot in the same manner as those in the binding clamp c. The raised parts d
and d or e¹ and e³ of the two binding clamps are so arranged, that on pressing
the clamps together by means of the lever arms f¹ and f, the rod fa and the
tread lever f, the two clamps are pressed together and engage each other with
their elevations, whereby the slots and form a channel going through the
length of the binding clamps when pressed together, see Figs. 5, 7 and 8.
9
On one side of the binding arrangement in the prolongation of the axis of the
channel formed by the slots and of the binding clamps, a needle g is fastened
in a suitable manner on a rod h arranged to slide on the machine frame. This
rod can be reciprocated by means of the connecting rod h¹ and the crank disk h³
provided with a pulley h³ à cord or strap and a tread lever 5. The needle
by the forward movement of the arm h is pushed through the channel up to the
further end of the binding arrangement and returns nearly to the bearing 6¹ of
the clamp c when the parts return to their original position under the action of
a counter spring. The crank disk is stopped after each needle stroke by a
suitable stopping arrangement.
The stitching thread is wound upon a spool which can be stopped by means
of a dog provided with a roller . This dog by the passage of projection h
arranged on the circumference of the crank disk h³ is brought out of connection
with the spool 3 (Fig. 3) so that the spool can turn and the stitching thread be
inwound. The free end of the stitching thread is conducted for guiding
purposes, through the pins and and is drawn through the eye of the needle g.
FD Q77

page_text: Above each projection of the binding clamp c is arranged sewing ribbon k
one end of which is fastened on an angle plate 1 movably arranged upon the
plate of the saddle the plate of this angle plate is used as a support for the
bound signatures; on the other end of the ribbon is hung a weight (Figs. 1
and 2). Un the end of the binding clamp e is mounted the hand wheel serving
for moving this clamp. A circular groove e is cut in the clamp c (Figs. 2, 4, 5
and 6) situated at the place where the eye of the needle temporarily rests while
the needle is fully protruded into this groove, the bent point of a needle m enters
from the one side, the needle m lving in a groove m arranged in the plate a¹
perpendicular to the axis of the binding clamp c. The needle m, being provided
at its other end with an eye is fastened in the groove m¹ in such a manner that
it is easily removable and lies freely. On the other side of the groove there is
arranged a finger ma Fig. 6 which as soon as the stitching needle g in its forward
movement has arrived at its furthest position passes into the groove and
engages with its point underneath the stitching needle between the stitching
needle and the thread (Fig. 5) so that by the backward movement of the stitch-
ing needle there is formed on the point of the finger m³ a loop wherein
the point of needle m passes as soon as the binding_clamp c, for removal
of the sewn signature is moved by the hand wheel e. This finger m² is fastened
on a lever arm m³ on the shaft m journalled in the saddle, this shaft m being
moved in in the one sense by means of a second lever m³ operated by a pro-
jection arranged on the circumference of the crank disk h³ and engaging with
the free end of the lever m³ so that the finger m³ comes almost entirely out of the
groove whilst on the other hand the shaft mt in sliding off of the elevation is
turned by the lover arm m³ so that the finger m² comes again between the stitching
needle and the thread.
If now a signature n to be sewn is laid open upon the plate a of the saddle in
such a manner that the fold of the sheet lies upon the slots of the binding
clamp and by means of the tread lever f the binding clamp e is moved
upon the binding clamp c, the sheet n is bent along the fold as
shown on
a larger scale in Fig. 5. On now working the tread lever 5 the needle
with the stitching thread which thread is drawn through the needle eye so far
that it can be drawn double through the sheet to be sewed is moved between the
two binding clamps. The sheet n is pierced by the needle g at its bent parts
respectively always between the two nearest projections which alternately belong
to the one or the other binding clamp and the double thread alternately passes
along both sides of the sheet. At the spot where there is sewing ribbon the
thread passes underneath the ribbon so that the ribbon lies between the sheet and
the thread as in hand sewn signatures.
As soon as the stitching needle has reached its further position in passing
between the binding clamps, the finger m³ in consequence of the passage of the
projection from the lever m³ comes between the stitching needle and the
thread and on the retreat of the needle the loop is formed which is held by
the finger m so that the needle in going back slides along its thread and leaves
the latter in place.
During the retreat of the needle, the projection 6 of the crank disk ³ drops
down from the roll of the dog in consequence the spool is arrested by the
dog so that no more thread can be wound off from the spool.
When the needle is fully drawn out of the binding arrangement the tread
lever is released consequently the binding clamp e is removed from the binding
clamp by the weight f. Now the binding clamp c is turned by the hand wheel c
so that the sewn signature is lifted by the arms and lies in a folded state upon
the plate of the angle plate. At the same time by moving the binding clamp c
the loop on finger m² is pushed upon the needle in the end of which enters the
loop before the loop, in consequence of the turning of clamp c round its axis
for the purpose of removing the sewn and folded signature slides down from
the finger m². On further turning of the hand wheel of a set screw o on it pushes

page_text: against an elastic lever arm o' on a shaft o journalled on the saddle and moves
the lever arm o on the other end of the shaft o to and fro between the guiding
pins and of the thread and over the lower end of which lever arm o³ the
stitching thread is guided. Since no more thread can be unwound from the
spool the stitching thread in the sewn sheet is tightened by the arm o³. The
binding clamp e returns to its original position, a new signature is put on and
the procedure repeated in the same manner as with the first signature. When
the number of signature is sewn during which the plate is suitably pushed
back on the plate a one pulls by means of the needle m one of the threads P in
its eye p¹ through all the loops upon needle m and fastens the loops strung on
this thread by knotting the ends of thread p together whereby also the sewn
signature are connected together at this end. At the opposite end of the signatures
the stitching thread passing always from one signature to the next further
fastening together of the signatures is not required.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed we declare that what we
claim is:-
1. A book stitching machine wherein the signature to be sewn is put with its
fold between two binding, clamps e and c which after folding together by their
alternately arranged elevations e¹ e and d d provided with slots and press
the sheet at several places of its fold out of its position so that the stitching
needle a passing in the direction of the fold in a guiding channel formed by the
slots and pierces the fold alternately from the inside and outside, whilst on
retreating of the needle g the thread loop is held by a catcher m³ which loop after
the retreat of needle and opening of the binding clamps e and and the
putting of the sheet against the plate by turning of the lower binding clamp c
is pushed upon a needle m for subsequent threading and fastening.
2. The construction of the threading machine substantially as herein described
and illustrated and to operate as set forth.
Dated this fith day of January 1899
HERBERT HADDAN & Co.,
Agents to Applicants.