Improvements in Portable Drilling Apparatus.
Year: 1899

page_text: Date of Application, 27th June, 1899
ifaction Laft 23ri Mar.. 1900—Accepted, 28th Apr.,
1900
PROVISIONAL SPECIFICATION.
Improvements in Portable Drilling Apparatus.
I, SAMUEL POND RUTHVEN, of 9, Albert Terrace, Musselburgh, in the County of
Midlothian, Merchant, do hereby declare the nature of this invention (as com-
municated to me by F. Ingle, of Johannesburg, Transvaal, South Africa, Mine
Accountant) to be as follows:-
This invention relates to portable drilling apparatus and it has for its object
to provide a simple and improved machine adapted especially for drilling flanges
and angle iron and in which the frame is so constructed that the machine may
be fixed to any work in situ true to centre and is held immovable until the
completion of the work.
The machine frame which is in a single piece is formed at one end with
an eye through which the feed screw is fitted whilst at its opposite end it is
formed with jaws or a recess wherein the work is secured, the lower jaw being
bifurcated whilst the upper one is formed by a web or eye piece projecting from
the mid part of the frame. The work is held in the recess between the jaws by
means of two set screws or bolts, one passing up through each limb of the forked
lower jaw and which are turned to press up against the work and jam it against
The tool holder passes
the upper jaw, through which the drilling tool passes.
centrally through the feed screw, the drill being secured in its lower end in the
usual way, whilst its upper end is square and is engaged by a hand lever provided
with a ratchet and pawl as in a ratchet brace so that the tool may be rotated
continuously or intermittently.
A recess is formed in the body part of the frame to facilitate handling.
In the operation of the apparatus the work is introduced in the recess between
the jaws, the drill is placed on the dot punch centre, and the set screws tightened
up, after which the drilling may be proceeded with and the work may remain
fixed until at the wish of operator, it may be released from its position and
replaced when desired.
The form of the frame is such as to be adapted for being secured in a vice,
where the apparatus may be used as an ordinary drilling machine.
Dated this 26th day of June 1899.
WALLACE FAIRWEATHER,
Of the Firm of Cruikshank & Fairweather,
Chartered Patent Agents,
Baint Vincent Street, Glasgow, Agent for the Applicant.

page_text: I, SAMUEL POND RUTHVEN, of 9, Albert Terrace, Musselburgh, in the County of
Midlothian, Merchant, do hereby declare the nature of this invention and in
what manner the same is to be performed, as communicated to me, to be par-
ticularly described and ascertained in and by the following statement:-
This invention relates to portable drilling apparatus and it has for its object
to provide a simple and improved machine adapted especially for drilling flanges
and angle iron and in which the frame is so constructed that the machine may
be fixed to any work in situ true to centre and is held immovable until the
completion of the work.
"
The invention is illustrated by the accompanying drawings, Figure 1 being a
side elevation of the improved portable drilling apparatus, and Figure 2 a hori-
zontal section of the same on the line x-x.
The machine frame A which is in a single piece is formed at one end with
an eye A through which the feed screw B is fitted whilst at its opposite end
it is formed with jaws C, C', or a recess wherein the work is secured, the lower
jaw C being bifurcated whilst the upper one C is formed by a web or eye
piece projecting from the mid part of the frame A. The work is held in the
recess between the jaws C, C, by means of two set screws or bolts D, one passing
up. through each limb of the forked lower jaw C¹, and which are turned to press,
up against the work and jam it against the upper jaw C, through which the
drilling tool I passes. The tool holder passes centrally through the feed
screw B, the drill I being secured in the lower end of the holder E in the
usual way, whilst its upper end is square and is engaged by a hand lever F
provided with a ratchet G and pawl H as in a ratchet brace so that the tool
may be rotated continuously or intermittently.
A recess A¹ is formed in the body part of the frame A to facilitate handling.
In the operation of the apparatus the work is introduced in the recess between
the jaws C, C, the drill I is placed on the dot punch centre, and the set screws D
tightened up, after which the drilling may be proceeded witli and the work may
remain fixed until at the wish of operator, it may be released from its position
and replaced when desired.
The form of the frame is such as to be adapted for being secured in a vice,
where the apparatus may be used as an ordinary drilling machine.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:-
1. Portable drilling apparatus the parts of which are constructed, combined
and arranged to be operated, substantially as described.
2. In portable drilling apparatus a work holding frame constructed substan-
tally as described.
D
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