An Improved Flange Drilling or like Machine.
Year: 1898

page_text: Date of Application, 15th Oct., 1898
17th
1000 Accented
11th Det
1030
PROVISIONAL SPECIFICATION.
An Improved Flange Drilling or like Machine.
I, JOHN EDMUND BRIDGER, of 73, Craven Street, Birkenhead, in the County of
Chester, Marine Engineer, do hereby declare the nature of this invention to be
as follows:-
The kind of tool to which this invention has reference, is a drilling or similarly
operating machine for operating on metallic flanges such as the flanges of pipes,
plates and other bodies or articles; and it has, mainly, for its object to provide
a machine which shall be simpler and less expensive than those at present com-
monly used for such purposes, and shall, moreover, require less labour, and
thereby diminish the cost of drilling holes, and similar operations.
According to this invention, there is a simple frame or body having, at one
part, namely, the base, gaps between two sets of lugs or projections, spaced apart
on either side of the centre, and extending at right angles from the frame or
body, and the axis of the machine generally; and the flange which is to be drilled
or operated on, fits in the two gaps. In the two lower lugs there are screw bolts,
which screw up from the bottom, and when the tool is fitted or placed over a
flange, and the bolts screwed up onto the flange, they clamp the tool to it.
At the other end of the frame or body, there is a boss which is bored out, and
provided internally with a screw thread; and in this boss an externally threaded
hollow sleeve fits and works, the upper end of which has arms or equivalent
means, by which it can be rotated in the frame boss, and screwed into and out of
it. Passing through the core of the hollow sleeve, there is a spindle carrying a
tool holder at its lower or inner end; and at the upper end a handle for rotating
it. The spindle has no movement itself vertically, the tool holder forming a
neck at one end, and a washer forming a neck at the other. Of course, in the
tool holder, the drill, boring bit, rymer, or other similar rotative tool is fixed;
and this tool will pass, when in action, between the two inner bosses or pro-
jecting parts of the body or frame.
In action, the drill or other tool is first moved up to the work on which it has
to operate, by rotating the hollow sleeve through the frame boss, thereby moving
it towards the opposite end of the machine; and then the tool spindle is rotated
by turning the handle on it; and as it works into the flange, it is fed up by the
further rotation of the hollow sleeve.
1000

page_text: and in what manner the same is to be performed to be particularly described and
ascertained in and by the following statement:--
The kind of tool to which this invention has reference, is a drilling or similarly
operating machine for operating on metallic flanges, such as the flanges of pipes,
plates, and other bodies or articles; and it has mainly, for its object to provide
a machine which shall be simpler and less expensive than those at present com-
monly used for such purposes, and shall, moreover, require less labour, and
thereby diminish the cost of drilling holes, and similar operations.
According to this invention; there is a simple frame or body having, at one
part, namely, the base, gaps between two sets of lugs or projections, spaced apart
on either side of the centre, and extending at right angles from the frame or
body, and the axis of the machine generally; and the flange which is to be drilled
or operated on, fits in the gaps between these projections. In the two lower lugs
there are screw bolts, which screw up from the bottom, and when the tool is
fitted or placed over a flange, and the bolts screwed up onto the flange, they
clamp the tool to it.
At the other end of the frame or body, there is a boss which is bored out, and,
provided internally with a screw thread; and in this boss an externally threaded
hollow sleeve fits and works, the upper end of which has arms or equivalent
means, by which it can be rotated in the frame boss, and screwed into and out of
it. Passing through the core of the hollow sleeve, there is a spindle carrying a
tool holder at its lower or inner end; and at the upper end a handle for rotating
it. The spindle has no movement itself vertically, the tool holder forming a
neck at one end, and a washer forming a neck at the other. Of course, in the
tool holder, the drill, boring bit, rymer, or other similar rotative tool is fixed;
and this tool will pass, when in action, between the two inner bosses or pro-
jecting parts of the body or frame.
A machine having the characteristics referred to is illustrated in the annexed
drawings, in which Fig. 1 is a side elevation partly in section; Fig. 2 is a front
elevation; and Fig. 3 a cross section taken at A, A Fig. 2.
Referring to these drawings, a represents the frame or body of the apparatus,
having at its lower end or base, two sets of lugs 6 the two lugs of each set being
spaced apart on either side of the vertical centre of the apparatus; and within
the gap formed by these two sets of lugs, the flange to be drilled or operated
upon fits.
c are two threaded eye-bolts, passed through and working in the two
lower lugs and by means of these screws, that is by screwing them up on to
the flange when in position in the gap, the apparatus is secured to the flange.
The upper end of the frame or body a is in the form of a hollow boss d, the
bore of which is threaded; and e is the tool holder adjusting sleeve and carrier,
disposed and working in this boss. f is the tool holder, the shank f¹ of which
is mounted in and works in the bore of the sleeve e. h is the handle on the tool
holder spindle f¹, by which it, and the tool, are revolved.
In action, after the apparatus is fixed in position on a flange, the tool in the
tool holder f is first moved up to the work on which it is to operate, by rotating
the hollow sleeve e by the hand wheel, or arms e¹; and then the. tool holder
spindle fis rotated by turning the hand lever h; and as the tool works into the
flange, it is fed up to the work by the further rotation of the hollow sleeve.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:-
1. An improved flange drilling or like machine, constructed and adapted to
fit and fasten on to the metal to be operated upon, by a double jaw, having
clamping and fastening screws, and having at its upper end a tool holder and
adjusting device; substantially as set forth.
GT
2. A flange drilling or like machine, comprising the body, with jaw

page_text: parts b, ; fastening screw bolts c; a boss d; tool holder and spindle f f¹;
adjusting sleeve e screwing in d, and supporting the sleeve, and tool holder;
constructed and adapted to operate as shown in and set forth with reference to
the drawings.
Dated this 15th day of July 1899
CHEESBROUGH & ROYSTON,
Applicant's Patent Agents, 15, Water Street, Liverpool.