Year: 1892

page_text: Date of Application, 24th Mar., 1892-Accepted, 14th May, 1892
Fig. 3 an inverted plan of machine constructed according to my invention.
Fig. 4 an end elevation of a part of the machine, shewing presser foot
arrangement.
Fig. 5 shews the cutting off knife in operation.
Figs. 6 and 7 are respectively a plan and part elevation shewing modification of
cutting off mechanism, and
Fig. 8 shews same in act of cutting off the thread.
For the above purpose the needle bar A, and rotary or reciprocating loop
former B, motions, are constructed in the ordinary way.
Below the needle bar A is provided a horizontal sliding saddle C for receiving
the book, pamphlet, papers, or other similar article to be sewn. This sliding saddle
is actuated by an external cam D mounted on a shaft E, through double endɩd
lever F and connecting rod G, which is attached to the bottom of the sliding
saddle by means of a pin or stud. On the cam D being caused to rotate, the
required horizontal sliding movement is given to the saddle which moves the work
along during the stitching operation. The external cam D is so constructed that
on any required number of stitches being made, it causes the saddle C to move
back to the starting point, this being done after the thread cutting off operation
has been performed.
For the purpose of cutting off the thread after any required number of
stitches have been produced, provide an arm H mounted on a shaft J, such
arm H carrying the knife or cutting piece K. This cutting off arrangement is
brought into operation by means of an external cam L mounted on the shaft E,
such cam being so constructed as to transmit motion at the proper time through
a lever M, which actuates the shaft J and transmits motion to the cutter K,
such cutter being quickly brought into operation, severing the thread as shewn
at Fig. 5, after the last required stitch has been formed, and after another loop
has been taken up by the loop former B, thereby liberating the thread for the
next sewing operation.
Instead of the above described arrangement for cutting off the thread after
each set of stitches, I may employ the arrangement shewn at Figs. 6, 7, and 8,

page_text: in which provide the arm H mounted on the shaft J, such arm being con-
nected to a rod or link H', which is attached to a slide J¹ by means of its
bracket, on which slide Ji is fixed the cutting off knife K. On the arm H
being moved by the shaft J at the proper time, motion is given to the slide J'
by means of the rod or link H', which slide moves in the framework, and
carries the cutting off knife K, whereby such cutter K is brought quickly into
operation and severing the thread as shewn at Fig. 8.
I employ an external cam N on the aforesaid shaft E for throwing the needle
bar A and loop former B in and out of gear. These operations are effected through
horizontal double ended lever P and vertical lever Q which actuates the clutch R
on the shaft S, throwing in or out of gear such clutch R with the bevel
gearing T. Motion is given to the shaft S through wheel U on driving shaft V,
and pinion W.
Any convenient clutch arrangement or other motion may be employed for
bringing the machine to a standstill at the end of each set of stitches, or for
setting it in motion again when required, such operations may be automatic_or
otherwise. In the drawings I have shewn a cam X mounted on the shaft E;
this operates at a given time on a draw-bar Y which may be in connection with
any suitable clutch or stop motion, whereby the machine can be brought to a
standstill when required.
I construct the thread lever 1 so that it draws down a quantity of slack thread
at the end of each set of stitches, so that at the end of each cutting off operation
there may be sufficient thread in the needle to commence the next set of stitches.
This movement is effected by a projecting cam 2 on the shaft E, which at a given
point in the revolution of such shaft, lifts the rod 3, causing the free end of
the lever 1 to fall, drawing with it the required quantity of slack thread. The
thread passes through end of lever 1 and through upper end of needle bar from
whence it passes down to the needle.
I employ a movable presser plate 4 for pressing down the book or other papers,
during the operation of sewing, which is so arranged as not only to have the
required lift motion, but is also arranged so as to move along with the sliding saddle C,
and at the end of each set of stitches to spring back from its angular to its vertical
position, ready for each fresh set of stitches after the cutting operation has been
performed. The movement for this presser plate 4 is effected by means of the
cam 5, which is mounted on the shaft E, such cam 5 at a given point gives motion
to a vertical rod 6 which comes in contact with a suitable projection 7 on the shaft 8,
causing such shaft to rock or partially rotate. At the opposite end of this shaft 8
is provided a short connecting piece 9, which is coupled to the lever or rod 10, to
which is attached or hung the presser plate 4. To a projection 11 on the said lever
or rod 10 I attach a spiral spring 12, which brings the presser plate back into its
starting or vertical position."
An ordinary or other convenient tension rod arrangement 13 may be employed to
control the thread during the sewing operation.
Motion is transmitted from the driving shaft V to the shaft E (which carries the
aforesaid cams) by means of the gearing 14.
In some classes of stitching or binding, where the book, pamphlet, or other
article thus stitched is not to be provided with a pasted or gummed back, but
used or circulated just as stitched in the above machine, it is advantageous to
fasten or fix the last stitch of each set as they are being formed on the machine,
and for this purpose I arrange on the last stitch being formed in each set of stitches,
that the thread needle shall pass down and into the same hole twice, whereby such
second stitch permanently fixes or fastens each set of stitches.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. In machines for stitching books, pamphlets, papers, and the like, the sliding

page_text: saddle for holding the book or other article to be sewn, actuated by any suitable
mechanism.
2. In machines for stitching books, pamphlets, papers, and the like, the employ-.
ment of sliding saddle in combination with a movable presser plate and parts
for operating same, substantially as herein set forth and shewn in the drawings.
3. In machines for stitching books, pamphlets, papers, and the like, the
employment of a reciprocating or rotary loop former, in combination with a
cutting off knife and parts connected therewith substantially as herein set forth
and shewn in the drawings at Figs. 1, 3, 4, and 5.
4. In machines for stitching books, pamphlets, papers, and the like, the employ-.
ment of a reciprocating or rotary loop former, in combination with cutting off knife
and parts for operating same, substantially as herein set forth and shewn in the
drawings at Figs 6, 7, and 8.
5. In machines for stitching books, pamphlets, papers, and the like, the employ-.
ment of thread controlling lever and parts for operating same, substantially as
herein set forth and shewn in the drawings.
6. In machines for stitching books, pamphlets, papers, and the like, the means
employed for throwing the Icop former and needle bar in and out of gear, sub-
stantially as herein set forth.
7. In machines for stitching books, pamphlets, papers and the like, the method of
fixing or fastening each set of stitches substantially as herein set forth.
8. The arrangement, construction, and combination of the various parts forming
the machine for stitching books, pamphlets, papers and the like, all operating sub-
stantially as herein described, and as illustrated in the accompanying drawings.
Dated this 24th day of March 1899
BREWER & SON,
Leeds and London, Agents for Applicant.
BREWER & SON,
Leeds and London, Agents for Applicant..