Improved Folding Mechanism applicable to Printing Machines.
Year: 1892

page_text: Date of Application, 30th May, 1892
Complete Specification Left, 28th Feb., 1893-Accepted, 1st Apr., 1893
PROVISIONAL SPECIFICATION.
[Communicated from abroad by Messieurs R. HOE AND COMPANY, of 504, Grand
Street, in the City of New York, United States of America, Printing
Machine Manufacturers.]
Improved Folding Mechanism applicable to Printing Machines.
I, HENRY EDWARD NEWTON of "The Office for Patents," 6 Bream's
Buildings, Chancery Lane, in the County of London, Patent Agent, do hereby
declare the nature of this invention to be as follows:-
This invention relates to that class of folding mechanisms which operate to
impart a longitudinal fold to material passing over or through them on the run,
and more particularly to such as are provided with a pair of converging internal
folding guides or formers, in passing over which, the material has its sides carried
towards each other, so as to be doubled or folded longitudinally. Longitudinal
folders of this class are well known, and need not be further described.
In such longitudinal folders, adapted to fold sheets, tapes have previously been
used for advancing the sheets over the folder, two series of tapes being employed,
or a series of external tapes co-acting with an internal plate.
The construction thus formed, however, is not entirely satisfactory in operation,
as it is difficult to secure and maintain, by tapes, the proper tension at all points of
the sheet, to assure its proper feed and accurate folding; the construction is
complicated, and requires careful attention, and frequent readjustment, to secure
the best results, and there is danger of offsetting, as it is found, in practice,
that the desired certainty of action is not secured by marginal tapes.
The special object of the invention is to provide an improved longitudinal
folder, by which these objections may be avoided, and sheets fed positively and
with certainty, and the requisite tension at all points of the sheet assured and
maintained at high rates of speed; and this object is obtained by the use of
positively driven feeding rollers, arranged to seize the sheet at opposite sides, and
advance it over the roller, these rollers converging from the internal guides at
opposite sides of the folder, so as to bring the opposite sides of the sheet together,
and form the longitudinal fold.
The feeding rollers may be arranged either interior or exterior of the sheet, and.
may co-act with a smooth plate or guide on the opposite side of the sheet, to seize
the paper, the rollers being preferably rubber faced, or roughened in any
suitable manner, to secure the proper feed of the sheets. Greater certainty is,
however, secured by the use of two sets of rollers, interior and exterior of the
sheets, and it is preferred to use this construction, the rollers in this case also being
preferably rubber faced or roughened.
Both sets of rollers may be positively driven, but this is unnecessary, and it is
preferred to drive but one set positively, and the other set by friction therefrom,
so that absolutely uniform speed of the two sets of rollers is secured, and the
pressure between the rollers may be varied readily by adjusting the frictionally
driven rollers toward or from the positively driven rollers. The rollers may be
arranged to advance the leading edge of the sheet without guides, or exterior
guides only may be used, but it is preferred to provide interior and exterior
guides, between which the leading edge of the sheet is positively guided between
the successive pairs of rollers.
This invention, therefore, consists, broadly, in the combination with the
converging internal guides, of a longitudinal folder, of positively driven feeding
rollers arranged on the sides of the folder, and operating to advance the sheet

page_text: from the guides; and in various constructions and combinations of parts, which
will be described in the following Specification.
The frame may be of any suitable construction, as common in web-printing
and other machines employing longitudinal folders of this class, and is provided
with internal guides, over which the sides of the sheet are bent to form the fold,
these internal guides consisting of bars converging to the apex between a pair of
rolls forming the fold-laying device or external guides, and from which the folded
shect passes to a pair of feeding rolls. The sheet is advanced to the folder by a
pair of feeding rolls mounted at the top of the folder. The internal guides are
supported, at their upper ends, by a bar extending across the top of the folder,
and mounted on the shaft of the lower feed roll, and at their lower ends by a cross
bar carried by a vertically adjustable arm, on a bar extending rearward under the
folder, and mounted in a bracket in the frame, so as to be adjustable longitudinally,
thus securing the proper positioning of the guides. The folder may be left open
at the top, only the internal guides being used, but a top plate extending between
the internal guides will preferably be used to aid in supporting the middle of the
sheet. The construction thus far described, is that of longitudinal folders now in
common use in web-printing and other machines, and it will be understood that
this invention may be applied to other similar constructions.
On each side of the folder, are two sets of rollers or pulleys, arranged
respectively inside and outside of the path of the sheet, as it passes over the
folder; these rollers being mounted so as to rotate in the proper plane to advance
the sheet over the folder, and the angle of this plane to the guides being
accurately adjusted to keep the sheet taut, and secure the proper tension at every
point. These rollers are mounted so as to engage each other, and thus advance
the sheet between them, and are preferably rubber-faced, or provided with
surfaces roughened in any suitable manner to give a better hold upon the paper.
The rollers engage the margin of the sheets close to the edge, so as to hold the
corners of the sheets down.
The interior rollers are carried by short shafts supported in bars extending
across the rear of the folder, and inounted in standards on the frame. The
exterior rollers are mounted in arms sleeved on studs carried by the bars, and
held in adjusted position on the studs by set screws, or by any other suitable
means.
A single set of interior rollers may be used, but a second series of rollers is also
provided.
Guides for the leading edge of the sheet, as it is advanced by the rollers, may be
provided, these guides operating to ensure the proper advancement of the sheet to
the fold-laying device.
These guides, especially if interior guides, should extend over more than a small
portion of the sheet; thus, a single narrow interior guide on each side of the
folder is used, carried by studs mounted in cross bars, while exterior guides, con-
sisting of plates adjacent to the rollers, coact with the interior guides. Narrow
exterior guides are preferably added between the exterior guides and the apex
of the folder. The exterior guides are carried by brackets adjustably mounted
on studs, so that these brackets may be adjusted longitudinally of the studs.
The fold-laying rolls and the rollers are driven from the feeding rolls.
The feeding rolls are geared together, and one of them carries a gear from
which the fold-laying rolls are driven, the fold-laying rollers being geared
together.
A stud is mounted on each side of the folder, just below the upper ends of
the interior guides, and these studs carry adjustable belt pulleys and arms, the
arms carrying belt turning pulleys, so that by the adjustment of these arms, the
marginal tapes running over the edges of the interior guides may be adjusted to
run as desired. Between the marginal tapes, two or more tapes are led from the
upper feeding roll over the plate on the top of the folder, to points about opposite
the upper ends of the guides, and returned over adjustable tension pulleys. It will

page_text: be understood, that the folder may be operated without the middle tapes, but they
are preferably used to aid in feeding the sheet.
While it is preferred to use two sets of feeding rollers, interior and exterior of
the sheet, a construction employing but one set of rollers co-acting with a plate
or similar device, to seize the sheet, will be found to operate fairly well. In
such a construction, the feeding rollers may be placed either interior or exterior
of the sheet, but it is preferred to use exterior rollers with an interior plate.
°
The single set of exterior feeding rollers are driven positively from one of the
fold-laying rolls.
The feeding rollers co-act with a highly polished rigid plate, supported firmly in
position, so as to sustain the feeding pressure of the rollers. These plates may
extend over the whole width of the sheet, or may consist of comparatively narrow
plates, and may be mounted and supported in any suitable manner.
The feeding rollers and plates may be used with other guides, but it is preferred
to use also exterior guides adjacent to the rollers, so as to ensure the proper lead
of the edge of the paper between the rollers, these guides consisting of narrow
plates supported on brackets carried adjustably by studs. The rollers and guides
are longitudinally adjustable on the studs, so that, by moving the rollers and guides
longitudinally of the studs, the rollers may be brought into position to engage the
margins of sheets of different widths.
This invention provides a simple, efficient, and durable longitudinal folder
capable of folding either a single sheet, or two or more sheets, with certainty, at a
very high rate of speed, the proper tension upon the sheet or sheets at every point
being readily secured by the adjustment of the guides relatively to the feeding
rollers, and all danger of offsetting being avoided, as the rollers need engage only
the unprinted margin of the sheet. While the construction has been described as
applied to folding sheets, it will be understood that it is applicable also to
associating two or more sheets or webs. It will be understood also that a slitter
and other devices in use with the present longitudinal folders, are equally
applicable to folders embodying this invention.
Dated this 30th day of May 1892.
NEWTON & SON,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improved Folding Mechanism applicable to Printing Machines.
I, HENRY EDWARD NEWTON, of The Office for Patents, 6 Bream's Buildings,
Chancery Lane, in the County of London, Patent Agent, 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 that class of folding mechanisms which operate to
impart a longitudinal fold to material passing over or through them on the run, and
more particularly to such as are provided with a pair of converging internal folding
guides or formers, in passing over which, the material has its sides carried toward
each other, so as to be doubled or folded longitudinally. Longitudinal folders of
this class are now well known.
In such longitudinal folders adapted to fold sheets, tapes have previously been
used for advancing the sheets over the roller, two series of tapes being employed,
or a series of external tapes co-acting with an internal plate. Tape folders of
this class are shewn in the Specifications of Letters Patent granted to William
Conquest, and dated respectively 2d June 1883, No. 2749, and Decr. 5th 1885,
No. 14948. The construction thus formed, however, is not entirely satisfactory
in operation, as it is difficult to secure and maintain, by tapes, the proper tension,
at all points, of the sheet, to assure its proper feed and accurate folding; the

page_text: construction is complicated, and requires careful attention and frequent readjust-
ment, to secure the best results; and there is danger of offsetting, as it is found,
in practice, that that the desired certainty of action is not secured by marginal
tapes.
The special object of this invention is to provide an improved longitudinal
folder by which these objections may be avoided, and sheets fed positively and
with certainty, and the requisite tension, at all points of the sheet secured and
maintained at high rates of speed, and this object is attained by the use of
positively driven feeding rollers arranged to seize the sheet at opposite sides,
and advance it over the roller, these rollers converging from the internal guides
at opposite sides of the folder, so as to bring the opposite sides of the sheet
together, and form the longitudinal fold.
The feeding rollers may be arranged either interior or exterior of the sheet,
and may coact with a smooth plate, or guide, on the opposite side of the sheet,
to seize the paper,-the rollers being preferably rubber faced, or roughened in
any suitable manner, to secure the proper feed of the sheets. Greater certainty
is, however, here secured by the use of two sets of rollers, interior & exterior of
the sheet, and the use of this construction is preferred, the rollers, in this case, also
being preferably rubber faced or roughened.
Both set of the rollers may be positively driven, but this is unnecessary, and
it is preferable to drive but one set positively, and the other set by friction there-
from, so that absolutely uniform speed of the two sets of rollers is secured, and the
pressure between the rollers may be varied readily by adjusting the frictionally-
driven rollers toward or from the positively driven rollers. The rollers may be
arranged to advance the leading edge of the sheet, without guides, or exterior
guides only may be used, but it is preferable to provide interior and exterior guides
between which the leading edge of the sheet is positively guided between the
successive pairs of rollers.
This invention, therefore, consists, broadly, in the combination with the con-
verging internal guides of a longitudinal folder, of positively-driven feeding rollers
arranged on the sides of the folder, and coacting with suitable devices, to advance
the sheet from the guides, and in various constructions and combinations of parts,
all of which will be fully described in the following Specification, and pointed out
in the claims.
For a full understanding of this invention, a detailed description of a construction
embodying the same in its preferred form, and a modification thereof, will now be
given in connection with the accompanying drawings forming a part of this Specifi-
cation, in which :-
Fig. 1 is a sectional side elevation of a folder of the preferred form, with the
exterior guiding plate on one side removed to shew the parts.
Fig. 2 is a plan view with the top plate removed.
Fig. 3 is a vertical section on the line 3. 3. of Figure 1.
Fig. 4 is a reversed plan of one side of the folder, one of the exterior rollers
being broken away.
Fig. 5 is a detail cross section on the line 5. 5 of Fig. 3, looking to the right.
Fig. 6 is a partial section similar to Fig. 3, shewing a modification.
Fig. 7 is a detail cross section on the line 7. 7. of Fig. 6, looking to the right.
Referring particularly to Figures 1 to 5, it will be understood that the frame A
may be of any suitable construction, as common in web printing and other machines
employing longitudinal folders of this class. B. C are the internal guides over
which the sides of the sheet are bent to form the fold, these internal guides BC
being shewn as consisting of bars converging to the apex a, between a pair of
rolls D forming the fold-laying device or external guides, and from which the
folded sheet passes to a pair of feeding rolls E. The sheet. is advanced to the
folder by a pair of feeding rolls F mounted at the top of the folder. The internal
guides B, C are supported at their upper ends by a bar G, extending across the
top of the folder, and mounted on the shaft of the lower feed roll F, and at their

page_text: lower ends by a cross bar H, carried by a vertically adjustable arm K on a bar I,
extending rearward under the folder, and mounted in a bracket on the frame A, so
as to be adjustable longitudinally, thus securing the proper positioning of the
guides B, C. The folder may be left open at the top, only the internal guides BC
being used, but a top plate L, extending between the internal guides, will preferably
be used to aid in supporting the middle of the sheet. The construction thus far
described is that of longitudinal folders now in common use in web printing
machines, and it will be understood that this invention may be applied to other
similar constructions.
Referring now to the parts in which this invention is embodied, on each side of
the folder are two sets of rollers or pulleys a b, arranged respectively inside and
outside of the path of the sheet, as it passes over the folder, these rollers being
mounted so as to rotate in the proper plane to advance the sheet over the folder,
and the angle of this plane to the guides B. C being accurately adjusted to keep
the sheet taut, and secure the proper tension at every point. These rollers a bare
mounted so as to engage each other, and thus advance the sheet between them,
and are preferably rubber faced, or provided with surfaces roughened in any
suitable manner, to give a better hold upon the paper. The rollers a bare prefer-
ably mounted so as to engage the margin of the sheets close to the edge, so as to
hold the corners of the sheets down, but it will be understood that this position
may be varied somewhat.
The interior rollers a are carried by short shafts 10 supported in bars 11
extending across the rear of the folder, and mounted in standards 12 on the
frame A. The exterior rollers are mounted in arms 13 (see Fig. 4) sleeved on
studs 14 carried by the bars 11, and held in adjusted position on the studs by set
screws, as shewn, or by any other suitable means, so that by adjustment of the
arms on the studs, the position of the rollers, b of each pair relatively to the
rollers a may be varied independently of the other pairs, to secure the proper
pressure on the sheets.
A single set of interior rollers a may be used, but it is preferable to provide
a second series of rollers a¹, so that by moving the rollers 6 longitudinally of their
supporting studs 14, they may be brought into position to engage one
or the
other of the sets of rollers a a', the folder thus being readily adjusted for
folding sheets of different widths.
The rollers a b and internal guides B, C, will operate to fold a sheet without
side guides, but it is preferable to provide guides for the leading edge of the sheet,
as it is advanced by the rollers a b, these guides operating to insure the proper
advancement of the sheet to the fold-laying device, and especially to secure the
proper movement of the leading edge of the sheet between one pair of rollers a b
and the next. These guides may be formed in any suitable manner, and only
exterior guides be employed, but preferably both interior and exterior guides will
be used. The exterior guides may consist of plates extending from the internal
guides B, C downward to the fold-laying device, and slotted for the engagement
of the rollers a b, and the interior guides may be formed in the same manner, the
sheet thus being fed downward between two broad plates. It is unnecessary,
however, that these guides (especially the interior guides) should extend over
more than a small portion of the sheet, and the construction shewn is preferred.
In this construction, a single narrow interior guide c, on each side of the folder,
is used, these guides being carried by studs 15 mounted in the cross bars 11,
and the exterior guides consist of plates d adjacent to the rollers, and coacting with
the interior guides c. Narrow exterior guides e are preferably added between
the guides d and the apex of the folder. The guides d are carried by brackets 16
adjustably mounted on the studs 14, so that these brackets may be adjusted
longitudinally of the studs 14, and the guides d be simultaneously moved inside the
rollers a', when the rollers 6 are shifted from the position shewn in Fig. 5 into
position to engage the inner rollers a¹ on the shafts 10.
Either one or both of the sets of rollers a b may be driven positively, but one of

page_text: the sets is preferably driven positively, and the other by friction with the same,
and it is preferred to drive the interior set of rollers a, as the driving mechanism
can thus be simpler and made more compact.
As shewn, the fold-laying rolls D, and the rollers a b, are driven from the feeding
rolls E, as follows
&
gear
The feeding rolls E are geared together by gears 17, and one of them carries a
gear 18 from which the fold-laying rolls D are driven through an intermediate 19
20 on the rolls D, these fold-laying rollers being geared together by gears 21.
The rollers a are driven from gear 18 through a second intermediate 19 (see
Fig. 3), in addition to that previously described, the gears 22 on shafts 10, and
intermediates 23, connecting said gears, so as to drive all the rollers a at a uniform
rate of speed.
Any suitable feeding devices may be used for securing the proper advance of the
sheet to the rollers a b, and bending it about the internal guides B, C, so as to
carry the leading edges into the grasp of the rollers a. b. It is preferable, however,
to use the construction shewn, which has been found to form a simple and efficient
means for this purpose, co-acting well with the rollers a. b.
In this construction, a stud 24 is mounted on each side of the folder, just below
the upper ends of the interior guides B. C, these studs corresponding in position
and means of support to the studs 14 previously described.
These studs 24 carry belt pulleys 25 and arms 26, adjustable on the studs, these
arms carrying belt-turning pulleys 27, so that by the adjustment of these arms, the
marginal tapes f, running over the edges of the interior guides B, C, may be
adjusted to run as desired. These marginal tapes are led from the upper feeding
roll F, over the upper ends of the internal guides B. C, then around the guides,
and downward around the belt pulleys 25, 27, returning over adjustable tension
pulleys 28, mounted in arms 29, carried by the bar 30 supported in the frame at
the top of the folder. Between the marginal tapes f, two or more tapes g (two being
shewn in the present case) are led from the upper feeding roll F over the plate L
on the top of the folder, to points about opposite the upper ends of the guides B. C,
and returned over adjustable tension pulleys 31 on the arms 32 carried by the
bar 30, as in the case of the tapes f. It will be understood that the folder may be
operated without the middle tapes g, but they are preferably used to aid in feeding
the sheet.
While it is preferred to use two sets of feeding rollers, interior and exterior of
the sheet, which arrangement secures greater certainty of action, a construction
employing but one set of rollers coacting with a plate or similar device to seize the
sheet, will be found to operate fairly well, and such a construction is within my
invention. In such a construction, the feeding rollers may be placed either interior
or exterior of the sheet, but it is preferred to use exterior rollers with an interior
plate. Such a construction is illustrated in Figures 6 and 7, and will now be
.described.
The general construction of the folder shewn in these figures, is identical with
that previously described, and the same means are used for advancing the leading
end of the sheet over the internal guides to the feeding rollers. The single set of
exterior feeding rollers / correspond in position and means of mounting and adjust-
ment toward and from the path of the sheet, with the rollers of the construction
previously described, being carried by sleeves 13 adjustably mounted on studs 14
carried by bars 11.
The feeding rollers are driven positively from one of the fold-laying rolls D
as follows:-
The fold-laying roll carries a gear 33, which drives, through two inter-
mediates 36, a gear 34, carried by a sleeve 35, loose on the stud 14, adjacent to the
roll D, and this sleeve 35 carries a gear 37, which meshes with a gear 38, on the
.shalt of the feeding roll h, which is carried by arm 13 adjustable on stud 14, as in
the construction previously described, so that the roll h may be adjusted toward
or from the path of travel of the sheet, without interfering with the mesh of the

page_text: gears, the proper feeding pressure thus being secured. The next feeding roll his
driven from the gear 34 by similar gearing on its stud 14 and shaft, through an
intermediate 39, and the upper feeding roll is driven from the intermediate 39
through intermediates 40, and a gear and sleeve on the stud 24 carrying belt
pulley 25, except that the movement is transmitted from gear 37, on the stud 24,
to the gear 38 on the shaft of the feeding roll h, through an intermediate 41 carried
by the arm 13. Only one side of the folder is shewn, but it will be understood that
the construction of the opposite side is identical with that shewn, and the feeding
rollers on the opposite side may be driven from the other fold-laying roll D by
similar gearing, although it is preferable to carry the movement from one side of
the folder to the other from intermediate 39, by the series of intermediates 42,
as shewn.
In this construction, the feeding rollers co-act with highly polished rigid
plates i, supported firmly in position, so as to sustain the feeding pressure of the
rollers h. These plates may extend over the whole width of the sheet, or may
consist of comparatively narrow plates; it is preferred however, to use plates.
extending substantially the width of the sheet, and corresponding to the ordinary
side plates frequently used in the longitudinal folders. The plates i may be
mounted and supported in any suitable manner, but, as shewn, they are supported
at their upper edges by being secured to the internal guides B, C, the guide and
plate being cut away, so as to make the exterior surfaces of the plate continuations
of the guides. The plates are preferably supported also at their rear edges
opposite the rollers h, so as to give a rigid support against the feeding pressure,
by brackets 43 mounted in bars 11, similarly to brackets 15 of the construction
previously described.
The feeding rollers and plates i may be used without other guides, but it is
preferable to use also exterior guides k adjacent to the rollers h, so as to ensure the
proper lead of the edge of the paper between the rollers, these guides k (see Fig. 7).
consisting of narrow plates supported by brackets 44, carried adjustably by
studs 14, similarly to brackets 16 of the construction previously described. It will
be seen that the rollers and guides are thus longitudinally adjustable on the
studs 14, as in the case of rollers and guides a of the construction previously
described, so that by moving the rollers h and guides longitudinally of the
studs 14, the rollers may be brought into position to engage the margins of sheets
of different widths.
While sets of three feeding rollers on each side of the folder are shewn, (which
number forms a convenient & efficient construction for longitudinal folders of the size
common in newspaper printing machines), it will be understood that rollers of
any suitable size or number may be used, and this will vary with the size of the
folder.
It will be found that this invention provides a very simple, efficient, and durable
longitudinal folder, capable of folding either a single sheet or two or more sheets
with certainty, at a very high rate of speed, the proper tension upon the sheet or
sheets at every point being readily secured by the adjustment of the guides B. C
relatively to the feeding rollers, all danger of offsetting being avoided, as the rollers
need only engage the unprinted margin of the sheet. While the construction has
been described as applied to folding sheets, it will be understood that it is applicable
also to associating two or more sheets or webs led over the opposite sides of the
folder, the improved construction above described being admirably adapted for this
use. It will be understood, also, that a web slitter, & other devices in use with the
present longitudinal folders, are equally applicable to folders embodying this
invention.
Having now particularly described & ascertained the nature of the said inven-
tion (as communicated to me from abroad), and in what manner the same is to
be performed, I declare that what I claim is :-
‘1. In a longitudinal folder, the combination with converging internal guides, of
:
3

page_text: feeding rollers on the opposite sides of the folder converging from the internal
guides, means co-acting with said rollers to form feeding devices, and means for
advancing the leading end of the sheet over the guides to the feeding rollers,
substantially as described.
2. In a longitudinal folder, the combination with converging internal guides, of
feeding rollers on the opposite sides of the folder converging from the internal
guides, means co-acting with said rollers to form feeding devices, guides for
directing the leading end of the sheet between the successive rollers, and means for
advancing the leading end of the sheet over the converging guides to the feeding
rollers, substantially as described.
3. In a longitudinal folder, the combination with converging internal guides, of
feeding rollers on the opposite sides of the folder converging from the internal
guides, rollers co-acting therewith to advance the sheet, and means for advancing
the leading end of the sheet over the guides to the feeding rollers, substantially as
described.
4. In a longitudinal folder, the combination with converging internal guides, of
feeding rollers on the opposite sides of the folder converging from the internal
guides, frictionally driven rollers co-acting with said feeding rollers to advance the
sheet, and means for advancing the leading end of the sheet over the guides to the
feeding rollers, substantially as described.
5. In a longitudinal folder, the combination with converging internal guides and
a fold-laying device, of feeding roliers on the opposite sides of the folder converging
from the internal guides to the fold-laying device, means co-acting with said rollers
to form feeding devices, and means for advancing the leading end of the sheet over
the guides to the feeding rollers, substantially as described.
6. In a longitudinal folder, the combination with converging internal guides, of
feeding rollers on the opposite sides of the folder converging from the internal
guides, means co-acting with said rollers to form feeding devices, and marginal
tapes advancing the leading end of the sheet over the guides to the feeding rollers,
substantially as described.
7. In a longitudinal folder, the combination with converging internal guides B, C,
of interior and exterior feeding rollers a, b on the opposite sides of the folder,
means for driving said rollers, external guides d, and means for advancing the sheet
over the guides B, C to the rollers, substantially as described.
ay
8. The combination with converging internal guides B, C, of interior and exterior
feeding rollers
b on the opposite sides of the folder, means for driving one series
of said rollers positively, external guides d, and means for advancing the sheet over
the guides B, C to the rollers, substantially as described.
9. The combination with converging internal guides B, C, of interior and exterior
feeding rollers a, b, on the opposite sides of the folder, means for driving said rollers,
internal and external guides c, d, and means for advancing the sheet over the
guides B, C to the rollers, substantially as described.
10. The combination with converging internal guides B, C, of interior feeding
rollers al and exterior rollers b, adjustable into position to co-act with either of
said rollers a a', substantially as described.
а,
11. The combination with converging internal guides B. C, of shafts 10 carrying
interior feeding rollers a a', means for driving said shafts, studs 14, and exterior
rollers b, adjustable on said studs, to co-act with either of said rollers a a', sub-
stantially as described.
12. The combination with converging internal guides B, C, of shafts 10, carrying
rollers a, means for driving said shafts, studs 14, and rollers b, carried by arms 13,
adjustable on said studs, to vary the feeding pressure, substantially as described.
13. The combination with converging internal guides B. C, of interior and exterior
feeding rollers a, b, and marginal tapes f, for bending the sheet about the guides B. C,
and advancing the leading end of the sheet to the feeding rollers, substantially as
described.
14. The combination with converging internal guides B. C, of interior and exterior

page_text: feeding rollers a, b, top plate L, marginal tapes of extending over the guides B, C,
and central tapes g, co-acting with said plate L, substantially as described.
Dated this 28th day of February 1892
NEWTON & SON,
Agents for the Applicant.