Improvements in "Dandy" Rolls for Paper Making Machines.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in "Dandy" Rolls for Paper Making Machines.
We, CHARLES JOHNSON and SMITH GARNETT, both of the Firm of C. H. Johnson
& Sons Limited, of Smedley Road, Manchester, in the County of Lancaster,
Paper Machine Wire Manufacturers, do hereby declare the nature of this inven-
tion to be as follows:-
This invention relates to improvements in dandy rolls that are employed in
paper making machinery for putting either the water mark or the finish on the
paper.
The object of our invention is to dispense with the necessity of soldering the
wheels to the tube on the shaft in order that they may retain their relative posi-
tions on the shaft.
For the purpose of securing the wheels to the transverse tube or shaft without
soldering said wheels thereto which is the ordinary practice, we employ ferrules
as distance pieces and supports to the wheels, but to avoid increasing the weight
thereby we prefer to make either the ferrules or the entire roll of aluminium.
We form the ferrules either plain on their edges or with one or more lugs to
slide into corresponding grooves or keyways in the wheels which prevent said
wheels having any movement circumferentially; the ferrules may be either com-
plete rings or split rings; split rings may be employed when increased grip on
the shaft is required.
By these means if any intermediate wheel should require to be renewed the
aforesaid wheels and ferrules may be readily slipped off and replaced on the
shaft, and greater rigidity is obtained by the combination of the tube and ferrule.
Dated this 95th day of February 1899.
GEO. DAVIES & SON,
Agents for the Applicants, 4, St. Ann's Square, Manchester.
Improvements in "Dandy" Rolls for Paper Making Machines,
We, CHARLES JOHNSON and SMITHI GARNETT, both of the Firm of C. H. Johnson
& Sons Limited, of Smedley Road, Manchester, in the County of Lancaster,
Paper Machine Wire Manufacturers, do hereby declare the nature of this inven-
tion to be as follows:-
This invention relates to improvements in dandy rolls that are employed in
paper making machines for putting the water mark or the finish on paper.

page_text: The primary object of our invention is to enable the rings which form the
frame of the dandy roll," and over which the wire cloth is placed, to be secured
to the tube or shaft without the necessity of soldering or brazing said rings to
the tube or shaft, and thereby to facilitate the removal and replacement of any
intermediate wheel or wheels if necessary, also to attain a greater degree of
rigidity than is obtainable in the present construction of dandy rolls.
In the accompanying drawing, Fig. I is a side elevation, and Fig. 2 a plan
of part of an ordinary paper making machine such as may have dandy rolls, con-
structed according to this invention applied.
Fig. is part section and part side view of our improved dandy roll; Figs. 4,
5, 6 and 7 are perspective illustrations of rings and ferrules respectively that
form part of the said dandy roll. In these views similar letters refer to similar
parts.
According to this invention, for the purpose of securing the rings a to the
transverse tube or shaft without soldering or brazing the said rings thereto,
we employ ferrules as distance pieces and supports to the rings. We form the
ferrules e with a lug or lugs d to slide into corresponding grooves or keyways e
in the rings a when placed on the shaft b; or the wheel centre may be plain
as Fig. 6, and the ferrule formed with plain edges but split transversely as shown
in Fig. 7 so as to grip the tube or shaft, or a complete ferrule with plain edges
be employed.
In building-dandy-roll-in-accordance with this invention we fit in the end
of the tube a plug I that is formed with a bearing pinor
journal gland place a ferrule on the outside of the end portion
of the tube, said ferrule and plug being secured thereto -by-studs or screws. k,
we-then-slip-on to the shaft the end ring a' which is flanged, and of the ordinary
form, the central flanged portion abutting-against-the-edge of the aforesaid
fixed ferrule j; A ferrule as c is then put on and a ring a, the lug d on the
ferrule entering the groove or keyway in the ring; A ferrule and a ring are
then put on the shaft alternately until the length of the roll that is required is
obtained when it is completed with a flanged ring a', a fixed ferrule j, and a
plug y, as at the commencement.
In order to obtain increased grip on the shaft we sometimes employ ferrules
that are split transversely as at f shown in Fig. 7, and either with or without
lugs formed on their edges. Complete ferrules with plain edges may sometimes
be employed for the purpose herein before named.
By these means as the rings do not require to be soldered or brazed, said rings
and also the ferrules, the shaft and other parts of the roll, may be made of
aluminium; a dandy roll can thus be produced that is lighter than a roll of the
ordinary construction, and a manufacturer may if he prefers use a roll of larger
diameter on fast running machines and thereby diminish the liability of "frothing."
If an intermediate ring should require to be renewed or the spaces between the
rings to be altered, said rings and ferrules may be readily slipped off the shaft
and replaced or changed.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is:-
1. In paper making machines the use of "dandy rolls" constructed with rings
formed to fit on a tube or shaft that are secured thereto by means of ferrules
placed on said shaft alternately with and between the rings, in the manner sub-
stantially as described and shown on the drawings.
2. In paper making machines the use of dandy rolls constructed with rings
that are secured on a tube or shaft by means of ferrules formed with lugs on their
edges which fit into corresponding recesses in the rings in the manner substantially
as described and shown.

page_text: 8. In paper making machines the use of dandy rolls constructed with rings
that are secured on a tube or shaft by means of ferrules that are split transversely
so as to grip the shaft in the manner substantially as described and shown.
Dated this 23rd day of November 1899.
GEO. DAVIES & SON,
Agents for the Applicants, 4, St. Ann's Square, Manchester.