IMPROVEMENTS IN MACHINERY EMPLOYED WHEN CUTTING PAPER INTO SUB
Year: 1879

page_text: LETTERS PATENT to Thomas Henry Pitt, of No. 34, Portland Place, in the
County of Middlesex, a Colonel in Her Majesty's Army, for the Invention
of "IMPROVEMENTS IN MACHINERY EMPLOYED WHEN CUTTING PAPER INTO
SUBITO
Sealed the 16th April 1880, and dated the 23rd December 1879.
PROVISIONAL SPECIFICATION left by the said Thomas Henry Pitt at the
Office of the Commissioners of Patents on the 23rd December 1879.
THOMAS HENRY PITT, of No. 34, Portland Place, in the County of Middlesex,
a Colonel in Her Majesty's Army. "IMPROVEMENTS IN MACHINERY EMPLOYED
WHEN CUTTING PAPER INTO SHEETS."
This Invention has for its object improvements in machinery employed when
cutting paper into sheets.
At the present time the paper as it is delivered from the machine is commonly
cut longitudinally by rotary cutters, then, at the end of the machine, after passing
over a roller, it is divided transversely into sheets by a pair of shear like blades.
The sheets drop from the blades on to an inclined board, commonly called the
dropboard," where they are accumulated in piles. In order that the sheets may
be received correctly the one over the other each pile requires the attention of a
boy or attendant to "jog" the sheets into their proper places.
還露
According to my Invention I cause the sheets of paper as they fall from the
transverse cutters to slide down an inclined guide board and apron, and to be
received upon an endless carrying felt, which is also, by preference, inclined; I
also place over the endless felt, near the point where the sheets of paper first come
into contact with it, a small roller passing across the felt from side to side and
revolving with the felt. Thus the leading ends of the sheets of paper are at once
received and held between the roller and the endless felt, and so the sheets become
securely held as they pass on to and along the felt so that they cannot shift from
their proper relative positions in passing from the inclined board and apron on to
and along the endless travelling felt. At the end of the travelling felt the sheets
are received on to a drop board, but with adjustable sheet metal partitions mounted
upon it to separate the several piles of sheets; I also place a small roller at the

page_text: delivery end of the endless felt. This roller revolves with the felt and holds the
sheets of paper down upon it at their rear ends until their fore ends have passed
down between the partitions on the drop board. Thus the sheets are not released
from the endless felt until they have nearly arrived at their places on the piles.
Amongst the advantages of my Invention are in saving of labor, as one boy is 5
able to superintend the formation of two, three, four, or more piles; in the
avoidance of all risk of injury to the attendants by the transverse cutting blades;
in the cutting to a waterline, which can be effected to greater nicety on account of
the freedom obtained by dispensing with the jogging boys at end of the machine;
in the paper being delivered with greater uniformity as to moisture and tempera- 10
ture, as any inequality in this respect becomes at once apparent at the automatic
delivery apparatus.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Thomas Henry Pitt in the Great Seal Patent Office on the
22nd June 1880.
THOMAS HENRY PITT, of 34, Portland Place, in the County of Middlesex, a
Colonel in Her Majesty's Army. "IMPROVEMENTS IN MACHINERY EMPLOYED
WHEN CUTTING PAPER INTO SHEETS."
This Invention has for its object improvements in machinery employed when
cutting paper into sheets.
At the present time the paper as it is delivered from the machine is commonly
cut longitudinally by rotary cutters, then, at the end of the machine after passing
over a roller, it is divided transversely into sheets by a pair of shear like blades.
The sheets drop from the blades on to an inclined board, commonly called the
drop board," where they are accumulated in piles. In order that the sheets may
be received correctly the one over the other each pile requires the attention of a
boy or attendant to "jog" the sheets into their proper places.
SE
According to my Invention I cause the sheets of paper as they fall from the
transverse cutters to slide down an inclined guide board and apron, and to be
received upon an endless carrying felt, which is also, by preference, inclined. I
also place over the endless felt, near the point where the sheets of paper first
come into contact with it, a small roller passing across the felt from side to side,
and revolving with the felt. Thus the leading ends of the sheets of paper are at
once received and held between the roller and the endless felt, and so the sheets
become securely held as they pass on to and along the felt so that they cannot
shift from their proper relative positions in passing from the inclined board and
apron on to and along the endless travelling felt. At the end of the travelling felt
the sheets are received on to a drop board similar to the ordinary drop board, but
with adjustable sheet metal partitions mounted upon it to separate the several
piles of sheets. I also place a small roller at the delivery end of the endless felt.

page_text: This roller revolves with the felt, and holds the sheets of paper down upon it at
their rear ends until their fore ends have passed down between the partitions on
the drop board. Thus the sheets are not released from the endless felt until they
have nearly arrived at their places on the piles.
In order that my said Invention may be most fully understood and readily
carried into effect, I will proceed to describe the Drawings hereunto annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a side elevation, and Figure 2 is a plan of the mechanical arrange-
ments by which, according to my Invention, the paper is carried from under the
knife to a divided moveable drop board where it jogs itself. The other Figures of
the Drawings show details of the mechanism drawn to the full size.
The machine consists of the following parts :-
1. The frame
2. The roller bar
3. The guide board
4. The curtain
marked a, a, α, α.
"
b, b, b, b.
90.
"
C.
"
5. Felt rolls and top rollers
ม
d, d³, d¹¹.
"
f.
8.
"
t,
6. The drop board
7. The stop
8. The drop board elevators
and their detailed description is as follows:-
1. The Frame. This is of cast iron attached to the paper making machine, and
bolted to the ground.
2. The Roller Bar.-This is a polished iron bar, Figure 5, bolted on to each side
of the frame, and on which runs the slide (Figure 6) which carries the top roller d¹¹,
the front felt roll, and the top roller d; the back felt roll is carried on a separately
cast continuation of this bar (Figure 4), and is fitted with adjustable slide.
The under felt guide roll is carried on the upper bar of the frame, and has an
adjustable slide, Figure 7; the top roller d¹ is carried on the moveable arm,
Figure 8; the driving motion is given to the back felt roll; Figure 6 shows three
screws, the horizontal one clamps the slide to the bar at the required spot dependent
upon the length of the sheet being cut, and the two top ones elevate or depress the
roller as required.
3. The Guide Board, made of any wood, and hung on a horizontal bar, and is
provided with an "elevator," Figure 3, by which its inclination is altered as
required according to the nature of the paper, also with a brass sliding stop,
Figure 1, at either end which prevents the paper being pushed out of the square
by the sliding cut of the knife, also with a wooden roll at the back, Figure 2,
which carries the curtain, and which is turned by a hand wheel. The knife is
such as is at present in common use.
4. The Curtain-This passes through a slot formed at the foot of the guide
board, is attached to the roller, Figure 2, and lies on the felt two or three inches
short of the top roller d¹¹; a piece of thick drawing paper highly glazed forms the
best curtain.
5. Felt Roll and Top Rollers.-These are of wood with an iron axle running
through them, and they work in brass bearings. The roller d¹¹ is set so as to
take hold of the end of the paper just after it is severed by the knife. The roller d
retains a hold on the sheets of paper until they have entered fairly between the
adjustable dividers on the drop board.
6. Drop Board. This is made of mahogany with slots win which work the
removeable and adjustable dividers, Figure 9; these are made of thin sheet copper
or other material in sets for different sizes of paper, and are clamped underneath
the drop board to the breadth of the sheet; the paper passes from the felt between
these "dividers" jogging itself; the drop board is hung on a bar attached to the
frame, and provided with a thread, and a brass hand wheel at the end of it enables

page_text: the board to be given a lateral motion, and so to be exactly adjusted to the falling
sheets. Figure 11 shows the hinges on which the board works.
7. Stop. This is of the usual pattern, and works up and down by an iron pin
sliding in the slots g on either side of board, and clamped by screw underneath to
the required spot, which should be a few inches below the end of the dividers,
this gives space for removing the paper.
All the slots are faced with iron at the
back, and the slots g with brass in the front.
8. Drop Board Elevators.-These are of iron, two in number, and screwed to the
ground so that a man may turn both together when standing in centre of drop
board. Figure 10 shows their construction, the ball at the top is merely a loose
brass ball.
Amongst the advantages of my Invention are in saving of labour, as one boy is
able to superintend the formation of two, three, four, or more piles; in the
avoidance of all risk of injury to the attendants by the transverse cutting blades;
in the cutting to a water line, which can be effected to greater nicety on account of
the freedom obtained by dispensing with the jogging boys at end of the machine;
in the paper being delivered with greater uniformity as to moisture and tempera-
ture, as any inequality in this respect becomes at once apparent at the automatic
delivery apparatus; in saving in the amount of "broken paper," and thereby of
expense; in the avoidance of cutting out of square, in the paper being better
jogged, and not being handled, being free from dirt and finger marks.
Having thus described the nature of my said Invention and the manner of
performing the same, I would have it understood that I claim,-
First. My improvements in machinery employed when cutting paper into sheets,
by which the end of the paper after it is severed by the knife is caused to be
guided onto and held against a travelling surface, which surface carries the sheets
forward upon it, and delivers them on to the drop board, the hinder ends of the
sheets being held against the travelling surface until the leading ends have entered
between partitions upon the drop board.
Second. My improvements in machinery employed when cutting paper into
sheets, substantially as herein described and illustrated by the annexed Drawings.
In witness whereof, I, the said Thomas Henry Pitt, have hereunto set my
hand and seal, this Fourth day of June, in the year of our Lord One
thousand eight hundred and eighty.
MITOS TIENDY DYNm