Improvements in Folding Machines.
Year: 1891

page_text: Date of Application, 11th June, 1891
Complete Specification Left, 25th Feb., 1892-Accepted, 26th Mar., 1892
PROVISIONAL SPECIFICATION.
Improvements in Folding Machines.
1, HARTLAND STUART WRIGHT, of The Stone Bridge, in the City and
County of Bristol, Printer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to machines for folding sheets or pages of paper into book
form. It has for its object to effect the folding of the sheets or pages with
increased accuracy.
This invention consists, firstly, in the provision of a creasing device in the folding
rollers whereby while the sheet is being folded by the rollers it is at the same time
impressed with a crease along which the next fold is to be made. The crease is
obtained by an annular ridge or knife-edge formed on one of the rollers in each
pair and taking into a corresponding recess in the other roller. A notch is made
in the folding knife to accommodate the annular creasing ridge.
In the operation of folding, a sheet is laid on the top table and is adjusted
thereon in the usual manner by points or gauges. In passing between the first
pair of rollers the sheet, in addition to being folded, receives an indentation or
crease which, when the sheet has passed to the next pair of rollers, is presented to
the folding knife appertaining thereto. Each time the sheet is folded it is also
creased, the crease constituting the line on which the subsequent fold is made. The
existence of the crease induces a more accurate fold than has been hitherto
generally obtainable.
Instead of
This invention secondly consists in providing a rigid surface or table behind the
sheets as a back-ground thereto when acted upon by the folding knife.
conveying the sheets either between two sets of travelling tapes or upon the top of
travelling tapes, they are, under this invention, conveyed by travelling tapes
moving over the face of a table which forms an unyielding back-ground or
foundation for the sheets against the pressure due to the action of the folding knife,
the sheets being between the tapes and the table and thus being secured against
any lateral movement.
The tapes are adjustable on the rollers or pulleys so as to be kept clear of
printed matter, thus avoiding smudging or defacing such printed matter.
Dated this 10th day of June 1891.
NICHOLAS WATTS,
Bristol Bank Buildings, Bristol, Agent.
COMPLETE SPECIFICATION.
Improvements in Folding Machines.
I, HARTLAND STUART WRIGHT, of The Stone Bridge, in the City and County
of Bristol, Printer, 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 machines for folding sheets or pages of paper into book
form. It has for its object to effect the folding of the sheets or pages. with
increased accuracy.
This invention consists, firstly, in the provision of a creasing device in the folding

page_text: rollers whereby while the sheet is being folded by the rollers it is at the same time
impressed with a crease along which the next fold is to be made. The crease is
obtained by an annular ridge or knife-edge formed on one of the rollers in each
pair and taking into a corresponding recess in the other roller. A notch is made
in the folding knife to accommodate the annular creasing ridge.
In the operation of folding, a sheet is laid on the top table and is adjusted thereon
in the usual manner by points or gauges. In passing between the first pair of
rollers the sheet, in addition to being folded, receives an indentation or crease by
means of the annular ridge or knife-edge aforesaid which indentation or crease,
when the sheet has passed to the next pair of rollers, is presented to the folding
knife appertaining thereto. Each time the sheet is folded it is also creased, the
crease constituting the line on which the subsequent fold is made. The existence
of the crease induces a more accurate fold than has been hitherto generally
obtainable.
This invention secondly consists in providing a rigid surface or table behind the
sheets as a back-ground thereto when acted upon by the folding knife. Instead of
conveying the sheets either between two sets of travelling tapes or upon the top of
travelling tapes they are, under this invention, conveyed by travelling tapes moving
over the face of a table which forms an unyielding back-ground or foundation
for the sheets against the pressure due to the action of the folding knife, the sheets
being between the tapes and the table and thus being secured against any lateral
movement.
In the accompanying sheet of drawings,
Fig. 1 represents, in elevation, and Fig. 2, in transverse section, a pair of folding
rollers a, b provided with my improved device for impressing creases on sheets or
pages.
On the roller a is formed an annular ridge al projecting beyond the general body
of the roller. The roller has an annular groove provided in it. Into this
groove the annular ridge or knife-edge a' of the roller a extends. The sheet in
is passage between the folding rollers is creased by the annular ridge a¹ which
presses the sheet towards and partly into the groove of the roller b. The crease
thus made is the line at which the sheet is next folded and the existence of the
crease ensures greater accuracy in folding, and it is to be understood that the sheet
is thus creased prior to each fold after the first.
A notch is made in the folding knife to accommodate the creasing ridge a¹ of the
roller a.
At Fig. 3 is shewn in plan and at Fig. 4 in section part of a folding machine
having folding rollers a of the kind above described.
In these two views is also illustrated the second feature of novelty comprised in
this invention, namely the provision of an unyielding surface behind the tapes.
The tapes c, which travel round tape rollers d¹ of the ordinary kind, impel the
sheet d between them and the table e which represents an unyielding back-ground
or foundation for the sheets against the pressure due to the action of the folding
knife as it acts upon the sheets, which latter being between the tapes and the table
are secured against any lateral movement.
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 a folding machine, the provision in one of each pair of folding rollers of an
annular ridge such as a projecting beyond the general body of the roller, and an
annular groove such as in the other roller of each pair, the said ridge taking into
the said groove, substantially as hereinbefore described with reference to the
accompanying drawings and for the purpose specified.
2. In a folding machine, the provision of tables such as e as.back-grounds to the
sheets or pages, over which tables the sheets are impelled by the friction between

page_text: them and the tapes, substantially as hereinbefore described with reference to the
accompanying drawings and for the purpose specified.
Dated this 23rd day of February 1892.
NICHOLAS WATTS,
Bristol Bank Buildings, Bristol, Agent.