A Flanged Boiler Flue Drilling Machine.
Year: 1898

page_text: A Flanged Boiler Flue Drilling Machine.
VICTOR HENRY COATES, Lagan Foundry, Belfast, Engineer, do hereby declare
the nature of this invention to be as follows:-
A flanged boiler flue drilling machine consisting of a box section base plate
open in the centre, with a universal cliuck face plate resting thereon, also open
in the centre, by which arrangement two flanged Hue rings when bolted together,
having caulking ring between them as generally adopted in Lancashire and
Cornish boilers can be firmly held by the centre joint in a vertical position,
allowing the upper & lower ends to revolve in space. Placed on two of the outer
udges of the base plate on opposite sides are two fixed beams which carry two
movable cross beams at right angles to these fixed beams which can be travelled
backwards & forwards on the two fixed beams towards & from the centre of the
machine. These movable beams carry four or more drills which are driven by
gearing attached to the machine. It is claimed by this arrangement that two
flanged flue rings of any diameter can be firmly held by the centre joint when
bolted together in a central position while the beams carrying the drills can
be run in or out between the flanges for drilling the different diameters & for
placing the flue rings in the machine & removing the same.
Daded th: 10th 1.
1000
COMPLETE SPECIFICATION.
A Flanged Boiler Flue Drilling Machine,
VICTOR HENRY COATES, Lagan Foundry, Belfast,. 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 :-
A flanged boiler flue drilling machine consisting of a box section base plate A
open in the centre with a universal chuck face plate B resting thereon, also open
in the centre by which arrangement two flanged flue C rings when bolted together
having caulking ring D between them as generally adopted in Lancashire and
Cornish boilers can be firmly held by the centre joint in a vertical position,
allowing the upper & lower ends to revolve in space." Placed on two of the outer
edges of the base plate on opposite sides are two fixed beams E which carry two
movable cross beams F at right angles to these fixed heams which can be travelled
backwards and forwards on the two fixed beams towards & from the centre of the
Drinn 77

page_text: machine. These movable beams carry four or more drills G which are driven by
gearing attached to the machine.
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. A boiler flue drilling machine with a universal chuck plate having a hole
in the centre for holding two boiler flues by central joint in a vertical and central
position while being drilled, which can be revolved as required.
2. A boiler flue drilling machine having drills attached to beams which can be
run in and out from and towards the centre to suit the various diameters of boiler
flues between the flanges of same.
3. A combination in the one machine of the above mentioned universal chuck
plate and drills carried on above mentioned beams, forming a complete boiler
Hlue drilling machine.