Improvements in Paper-folding Machines.
Year: 1895

page_text: Date of Application, 19th Mar., 1895
Complete Specification Left, 14th Dec., 1895-Accepted, 18th Jan.. 1896
PROVISIONAL SPECIFICATION.
Improvements in Paper-folding Machines.
I, FRIEDRICH VON MARTINI, of Frauenfeld, Switzerland, Engineer, do hereby
declare the nature of this invention to be as follows:-
This invention relates to improvements in tape-folding-machines, i.e. folding-
machines having tapes as guiding-devices.
Paper-folding machines of this kind as usually constructed have possessed the
disadvantages that the adjustment or changing of the machine from one arrange-
ment or kind of folding to another is very tedious and complicated and that, in
consequence of the necessity for removing and afterwards replacing the tapes, the
accuracy of the folding is considerably interfered with.
Now with the object of obviating these drawbacks, the arrangement according
to my invention is such that for each kind of folding employed, the last pair of
folding-rollers (that is to say, in twice-folding machines the second pair, in thrice-
folding machines the third pair, and so on) are always delivery-rollers, so that
when a change is made to one more fold, these rollers are never employed for
transferring the sheets to the rollers for making the next fold.
Thus for instance in a machine of the kind herein described, for both twice and
thrice folding sheets, the tedious removal or changing from thrice-folding to twice-
folding, of the tapes which convey the twice-folded sheet to the third pair of
rollers, is dispensed with, because a separate pair of delivery-rcllers is provided for
the second folding.
Figs. 1, 2, and 3 of the accompanying drawings illustrate apparatus according to
this invention in front elevation, in plan, and in side elevation respectively. The
driving-shaft A operates by means of a spur-wheel B and an intermediate wheel C,.
wheels C1 and C2 which transmit their motion to the wheels c' and c² for driving
the first and third pairs of rollers. The two second pairs of rollers are driven from.
bevel-wheels D and D³ (Fig. 2) by means of wheels c and ³.
A sheet that is to be folded thrice is placed upon the machine as indicated by
the broken lines in Fig. 2. On being pressed down between the first pair of
rollers d, d' by means of a folder or folding blade, the sheet is caught by these two
rollers and folded, and is then carried along by the tapes d2 (which run over
the roller d and the roller or shaft do) until it is arrested by the stops F (Fig. 1).
On being pressed by a second folding blade in between the second pair of rollers e, e¹,
the sheet is caught by these rollers and folded a second time; and it is then carried
along by the tapes e (which run over roller e and the roller or shaft e°) until it is
arrested by the stops G (Fig. 3).
The sheet is then pressed by a third folding blade in between the third pair of
rollers f, f, is caught and folded thereby, and then thrice folded, leaves the
machine and passes into the distributing-box.
If, however, a sheet is to be folded only twice, it is placed upon the machine as
indicated by the chain lines in Fig. 2, i.e. the centre-line of the sheet is placed a
distance z from the initial position on the machine of the centre-line of the sheet
the passage of which through the machine has just been described.
After having been folded by the first pair of rollers d, d¹ and having leen
carried along on the tapes d² in exactly the same manner as previously described,
the sheet is, for the purpose of effecting the second folding, passed in between the
pair of rollers E, E by means of a suitably placed folding blade, and is folded by

page_text: these rollers, leaving the machine and passing into the distributing-box only twice
folded. The double bevel-wheel D°, which is mounted so as to be capable of being
slid along the driving-shaft A, enables the rollers e, e' or the rollers E, E¹ to be
driven, as desired, according as it is in gear with the wheel D³ or the wheel D
respectively. When sheets are being folded twice, the rollers e, e', and consequently 5
also the tapes 2, are out of operation; whilst when thrice-folding is being effected,
- the rollers E, E' are at rest. The changing of the machine from twice-folding to
thrice-folding is thus effected according to this invention simply by shifting the
double wheel D°.
Dated this 10th day of March 1805
F. WISE, HOWORTH,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.
1, FRIEDRICH VON MARTINI, of Frauenfeld, Switzerland, 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 improvements in tape-folding machines that is to say
folding machines having tapes as guiding-devices for the sheets of paper to be
folded.
Folding-machines of this kind as usually constructed have possessed the dis-
advantages that the adjustment or changing of the machine from one arrangement
or kind of folding to another is very tedious and complicated and that, in
consequence of the necessity for removing and afterwards replacing the tapes,
the accuracy of the folding is considerably interfered with.
Now with the object of obviating these drawbacks, the arrangement according
to my invention is such that for each kind of folding employed, the last pair of
folding rollers (that is to say, in twice-folding machines the second pair, in thrice-
folding machines the third pair, and so on) are always delivery-rollers, so that
when a change is made to one more fold, these rollers are not employed for
transferring the sheets to the rollers for making the next fold.
Thus, for instance in a machine for both twice and thrice folding sheets, of
the kind herein described, the tedious removal, on changing from thrice folding
to twice folding, of the tapes that convey the twice folded sheet to the third
pair of rollers, is dispensed with, because a separate pair of delivery-rollers is
provided for the second folding.
Figs. 1, 2, and 3 of the drawings filed with my Provisional Specification represent
apparatus according to this invention in front elevation, in plan, and in side
elevation respectively.
A is the driving-shaft which operates by means of a spur-wheel B and an
intermediate wheel C, wheels C and C which transmit their motion to the
wheels c¹ aud c² for driving the first and third pairs of rollers. The two second or
intermediate pairs of rollers are driven from bevel-wheels D and D³ (Fig. 2) by
means of shafts and wheels c and c³.
A sheet that is to be folded thrice is placed upon the machine as indicated by
the broken lines in Fig. 2. On being pressed down between the first pair of
rollers d, d' by means of a folder or folding-blade, the sheet is caught by these two
rollers and folded, and is then carried along by the tapes d (which run over
the rollers d and the roller or shaft ) until it is arrested by the stops F (Fig. 1).
Ou being pressed by a second folding-blade in between the second pair of rollers e, e',

page_text: the sheet is caught by these rollers and folded a second time, and is then carried
along by the tapes 2 (which run over the roller e and the roller or shaft e°) until it
is arrested by the stops G (Fig. 3). The sheet is then pressed by a third folding-
blade in between the third pair of rollers f, f', is caught and folded thereby, and
then, thrice folded, it leaves the machine and passes into the distributing box.
If, however, a sheet is to be folded only twice, it is placed upon the machine as
indicated by the chain-lines in Fig. 2-i.e., the centre-line of the sheet is placed a
distance z from the initial position on the machine of the centre-line of the sheet
the passage of which through the machine has just been described. After having
been folded by the first pair of rollers d, d', and carried along on the tapes d³, in
exactly the same manner as previously described, the sheet is, for the purpose of
effecting the second folding, passed in between the pair of rollers E, E by means
of a suitably placed folding-blade, and is folded by these rollers, leaving the
machine and passing into the distributing-box only twice folded.
The double bevel-wheel D°, which is mounted so as to be capable of being slid
along the driving-shaft A, enables the rollers e, e' or the rollers E, E¹ to be driven,
as desired, it being in gear with the wheel D³ when driving the rollers e, e' and
with the wheel D when driving the rollers E, E'. When sheets are being folded
twice, the rollers e, el and consequently also the tapes e³, are out of operation;
whilst when thrice-folding is being effected, the rollers E, E' are at rest.
The
changing of the machine from twice-folding to thrice-folding is thus effected
according to this invention simply by shifting the double wheel D°.
Having now particularly described and ascertained the nature of the said inven--
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. A paper-folding machine of the kind herein referred to constructed with one
or more additional pairs of rollers without tapes, arranged near the second, third,
&c., pairs of tape rollers and adapted to be brought into operation only for making
the for-the-time-being, last fold, so that further guiding of a folded sheet to the
following pair of tape rollers is avoided, substantially as herein described.
2. My improved paper-folding machine with additional pairs of rollers without
tapes and mechanism whereby each of the said pairs of additional rollers can be
thrown in and out of operation at will, these parts being constructed, arranged and
operating substantially as hereinbefore described with reference to and shown in.
the drawings herein referred to.
Dated this 13th day of December 1895.
F. WISE HOWORTH,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.