IMPROVEMENTS IN THE CONSTRUCTION OF CYLINDERS OF OR DRUMS FOR PAPER MAKING AND OTHER MACHINES
Year: 1872

page_text: LETTERS PATENT to Daniel Bentley and John Broad Jackson, both of
Lodge Bank Works, Bury, in the County of Lancaster, Engineers,
for the Invention of "IMPROVEMENTS IN THE CONSTRUCTION OF CYLINDERS
PROVISIONAL SPECIFICATION left by the said Daniel Bentley and
John Broad Jackson at the Office of the Commissioners of Patents,
with their Petition, on the 3rd May 1872.
We, DANIEL BENTLEY and JOHN BROAD JACKSON, both of Lodge
Bank Works, Bury, in the County of Lancaster, Engineers, do hereby
declare the nature of our said Invention for "IMPROVEMENTS IN THE
CONSTRUCTION OF CYLINDERS OR DRUMS FOR PAPER MAKING AND OTHER MACHINES,"
to be as follows:—
This Invention relates to a peculiar method of fastening or
sccuring the ends and centres of the cylinders or drums of paper making

page_text: machines and other machines wherein cylinders or drums are employed
whether for drying or other purposes, and has for its chief object the
obviating the necessity for making holes in the cylinder ends, thereby
preserving an unbroken surface in the ends or centres of the said
cylinders.
According to our Invention we cast an interual flange or series of
internal projecting lugs on the inner circumference of the cylinder or
drum a little distance from the end thereof, a series of slots or bolt
or cottar holes being made at convenient intervals through the said
internal flanges or lugs for the reception of the ends of the cottars, studs,
or screw bolts employed as fastenings. On the inner face of a metal
disc which forms the end of the cylinder or drum and which fits
accurately inside the cylinder there are formed a number of projections
having T shaped slots therein corresponding in position to the slots or
bolt holes in the interior of the cylinder, or the said slots may be cast
in the cylinder end itself in lieu of being made in projections. The
cottars, studs, or bolts are then fitted into the said T slots and the end
disc is inserted inside the cylinder, so that the inner ends of the several
fastenings shall enter the slots or holes in the internal flange or lugs
whereupon the end plate may be tightened up either by keys-driven
through the cottars or studs or by means of nuts screwed on to the inner
screwed ends of the bolts when bolts are employed,
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Daniel Bentley and John Broad Jackson in the
Great Seal Patent Office on the 31st October 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, wc, DANIEL
BENTLEY and JOHN BROAD JACKSON, both of Lodge Bank Works, Bury,
in the County of Lancaster, Engineers, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Third day of April, in the year of 3
our Lord One thousand eight hundred and seventy-two, in the thirty-
fifth year of Her reign, did, for Herself, Her heirs and successors, give
2

page_text: and grant unto us, the said Daniel Bentley and John Broad Jackson,
Her special license that we, the said Daniel Bentley and John Broad
Jackson, our executors, administrators, and assigns, or such others as
we, the said Daniel Bentley and John Broad Jackson, our executors,
administrators, or assigns, should at any time agree with, and no
others, from time to time and at all times thereafter during the term
therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN THE
› CONSTRUCTION OF CYLINDERS OR DRUMS FOR PAPER MAKING AND OTHER MACHINES,"
upon the condition (amongst others) that we, the said Daniel Bentley,
and John Broad Jackson, our executors or administrators, by an instru-
ment in writing under our hands and seals, or under the hand and seal
of one of us, should particularly describe and ascertain the nature of
the said Invention, and in what manner the same was to be performed,
and cause the same to be filed in the Great Seal Patent Office within
six calendar months next and immediately after the date of the said
Letters Patent.
NOW KNOW YE, that we, the said Daniel Bentley and John Broad
> Jackson, do hereby declare the nature of our said Invention, and in what
manner the same is to be performed, to be particularly described and
ascertained in and by the following statement, reference being had to
the accompanying Drawings, and to the letters and figures marked
thereon, that is to say :-
:-
Our said Invention relates to a peculiar method of fastening or
securing the ends and centres of the cylinders or drums of paper making
machines and other machines wherein cylinders or drums are employed
whether for drying or other purposes, and has for its chief object the
obviating the necessity for making holes in the cylinder ends, thereby
preserving an unbroken surface in the ends or centres of the said
cylinders.
And in order that our said Invention may be fully understood we
shall now proceed more particularly to describe the same, and for that
purpose shall refer to the several Figures on the annexed Sheets of
Drawings, the same letters of reference indicating corresponding parts
in all the corresponding Figures.

page_text: ;
Figure 1 of our Drawings represents an end view of a drying cylinder
constructed according to our Invention, one-half being shewn with the
.end plate in its place, and the other half with the end plate removed
Figure 2 is a partial longitudinal section and clevation of the improved
cylinder; Figure 3 is an inside view of one of the end plates detached, i
and Figures 4 and 5 are full sized details of the fastening.
In carrying out our said Invention we cast an internal flange or series
of internal projecting lugs A, A, on the inner circumference of the
cylinder or drum B a little distance from the end thereof (see Figures 2
and 5). A series of slots or bolts or bolt or cottar holes are made at 1
convenient intervals through the said internal flanges, or a slot or bolt
hole is made in each lug, as shewn in our Drawings, for the reception of
the ends of the cottars, studs, or screw bolts a employed as fastenings.
On the inner face of the metal disc C which forms the end of the
cylinder or drum and which fits accurately inside the cylinder, as shewn 1
clearly in Figures 2 and 5, there are fitted or formed a number of
projections D, the contiguous ends of which form T shaped slots corre-
sponding in position to the slots or bolt holes before referred to in the
interior of the cylinder, or the said T slots may be cast in the thickness
of the cylinder end itself in lieu of being made in projections D. The 2
heads of the cottars, studs, or bolts a are then fitted into the said T slots
and the end disc C is inserted inside the cylinder B so that the inner
ends of the several fastenings a shall enter the slots or holes in the
internal flange or lugs A, whereupon the end plate or disc C may be
tightened up either by keys driven through the cottars or studs, or by :
means of nuts screwed on to the inner screwed ends of the bolts when
bolts are employed, as shewn in our Drawings. The same system of
fastening is represented in Figures 2 and 3 as applied to the securing
of the centres or journals E of the cylinder to the end plates C.
Having now described and particularly ascertained the nature of our 3
said Invention, and the manner in which the same is or may be used or
carried into effect, we would observe in conclusion that what we consider
to be novel and original, and therefore claim as the Invention secured to
us by the herein-before in part recited Letters Patent is,―
First. The construction and use of metal cylinders such as we have 3
herein-before described and illustrated by our Drawings.

page_text: Second. The peculiar method of securing the ends and centres to
metal cylinders, as herein-before described and illustrated by our
Drawings.
In witness whereof, we, the said Daniel Bentley and John Broad
Jackson, have to this our Specification set our hands and seals,
this Twenty-eighth day of October One thousand eight hundred
and seventy-two.