Improvements in and relating to the Casting of Printers' and like Composition Rollers.
Year: 1893

page_text: Date of Application, 14th Feb., 1893-Accepted, 25th Mar., 1893
COMPLETE SPECIFICATION.
Improvements in and relating to the Casting of Printers' and like
Composition Rollers.
I NEWTON WILSON of 27 Hilldrop Road London N. Consulting Engineer, 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 an improved method of and means for heating the
moulds employed in the manufacture of printers' and like composition rollers, in
preparation for the casting process, and its object is to properly heat the said
moulds in a more speedy and economical manner than is possible by existing
methods.
According to my invention, I effect the heating of the said moulds by passing a
gas burner of the Bunsen type along the interior thereof, the said burner being so
constructed and arranged, as hereinafter described, as to occupy a central position
as regards the interior of the mould during its passage, thus heating the same
equally on all sides.
In the accompanying drawings in which similar letters refer to corresponding
parts in both figures:-
Fig. 1 is a side elevation of a mould having my invention applied to the interior
thereof, the mould being shewn in longitudinal section, and,
Fig. 2 is a transverse section of Fig. 1 on the lines 1-2.
a is the mould, and 6 is the burner of the Bunsen type, consisting of a metal tube
connected with a flexible gas supply pipe cand having sufficient air inlet holes therein
to produce a blue flame. d are perforations around the sides of the burner b for
of the jets of mixed gas and air.
the escape
In order to retain the tube b in a central position as regards the interior of the
mould a when traversing the same, and in order to permit the tube 6 to be adjusted
to a central position when applied to moulds of a different size, I mount the tube b
upon saddles e situated at opposite extremities thereof, the saddles e being adjustably
connected with travellers by means of dependent slotted tongues e¹ connected by
screws g with upwardly projecting tongues f¹ on the travellers f. The travellers f
would preferably be made of wood so as not to scratch the interior of the moulds,
and would also preferably be provided with projecting runners fl on either side
(see Fig. 2). Where the travellers are constructed of metal, scratching or wear of
the interior of the moulds may be prevented by substituting suitable anti-friction
rollers for the runners f¹.
The gas supply to the burner b should be so regulated as not to permit the jets
of flame from the perforations d therein to touch the sides of the mould a during
the heating process, which consists in traversing the burner b along the interior of
the mould a until the same is sufficiently heated. A convenient rod or handle may
be attached to the burner b for passing the same along the interior of moulds of
great length. By the use of my invention the moulds can be adequately heated in
one fourth the time occupied by existing methods.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what [
claim is :-
1. Heating the moulds used for casting printers and like composition rollers, by
passing a burner of the Bunsen type along the interior thereof, the said burner
being so constructed and arranged as to occupy a central position as regards the
interior of the mould during its passage substantially as described.

page_text: 2. A burner for heating the interior of moulds used for casting printers and like
composition rollers, so constructed and arranged as to be capable of ready adjust-
ment to a central position as regards the interior of the mould to which it is to
be applied substantially as described and illustrated.
Dated this 14th day of February 1893.
E. P. ALEXANDER & SON, Fels. Chartd. Inst. 'P.A.,
19, Southampton Buildings, London, W.C., Agents.