A Portable Electric Planing and Polishing Machine.
Year: 1892

page_text: Date of Application, 30th Jan., 1892
Complete Specification Left, 22nd Aug., 1892-Accepted, 1st Oct.. 1892
PROVISIONAL SPECIFICATION.
A Portable Electric Planing and Polishing Machine.
I MALCOLM SUTHERLAND, of Leven Shipyard Dunbarton, in the County of
Dunbarton, North Britain, Electrical Engineer do hereby declare the nature of
this invention to be as follows :-
A suitable electro-motor is mounted on a sole of wood, iron, or other suitable
material, and is coupled either direct or by means of spur wheels, belts, ropes, or
other suitable gearing, to a revolving spindle, to which, cutting blades are attached.
The spindle is so mounted on the sole, that it can be raised or lowered, while the
machine is in motion, causing the blades to cut more or less deeply, as required.
It may be so arranged, that instead of blades, a roller may be mounted on the
spindle, having sand paper emery cloth or other polishing material attached to it,
or rollers of stone, solid emery, steel, or other suitable material may be used. The
sole may be mounted on castors or wheels, or may be allowed simply to rest on the
material to be planed or polished.
Dated this the 30th day of January 1892.
MALCOLM SUTHEKLAND.
Bottomley & Liddle,
Applicant's Agents.
COMPLETE SPECIFICATION.
A Portable Electric Planing and Polishing Machine.
I, MALCOLM SUTHERLAND, of Leven Shipyard, Dunbarton, in the County of
Dunbarton, North Britain, Electrical 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:-
My invention relates to a portable electric planing and polishing machine for
the purpose of planing and polishing decks, floors, or other surfaces.
A revolving spindle carrying cutting blades may be mounted on a suitable base
and coupled to a suitable electric-motor, either direct or by means of spur-wheel
gearing, belts, ropes, or other suitable means. An arrangement may be made by
which the spindle can be raised or lowered so as to cause it to make a greater or
smaller cut as desired without stopping the machine. The spindle may be arranged
to revolve either horizontally or vertically.
Instead of the cutting blades a roller covered with sand-paper, emery, or other
suitable material, or a roller of stone, solid emery or other material may be used.
The base may be of wood, iron, or other suitable material, and it may, if necessary,
be mounted on wheels or rollers.
The machine may be made for cutting and polishing by mounting a polishing
roller as before described behind the cutter spindle and coupling it by suitable
neans to the motor or other gear, or it may be made for cutting alone or for
polishing alone.
In order that my invention may be properly understood and readily carried
into effect I have hereunto appended two explanatory sheets of drawings in the
several figures of which corresponding parts are marked with the same letters of
reference.
Figure 1 is a side elevation.
Figure 2 is an end elevation.
A is the electric motor bolted to the stand B carried on wheels C, C¹. The

page_text: armature spindle D has a toothed wheel E keyed on to it by which through an
intermediate toothed wheel F gearing with a third toothed wheel G the spindle H
is caused to revolve. The spindle H carries the cutting blades I I. The spindle
of the wheel C revolves in journals c, c in the rods J, J. These rods are screwed
at their upper ends and have jam nuts K, K, so that the distance between the
stand B and the spindle of the wheel C may be adjusted so as to allow the cutter
to make a greater or less cut as may be desired.
This lowering and raising arrangement may be supplemented by eccentric
bearings at c, that is the holes in the rods J, J would be bored larger than the
spindles c, c, and metal bushes introduced having each a hole bored in it to receive
the spindles, the centre of which would not coincide with the centre of the larger
hole. The bushes would be coupled together by a fork. It would be so arranged
that the fork could be moved in either direction by means of a screwed spindle
attached to the base B, thus causing the bushes to revolve. The spindle bearings
being out of the centre, revolving the bushes would either raise or lower the
wheel C.
When it is desired to use the machine for polishing, a roller covered with sand-
paper, emery, or other suitable material may be substituted for the cutters.
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
The portable electric planing and polishing machine constructed substantially as
described.
Dated this 20th day of August 1892.
BOTTOMLEY & LIDDLE,
154, St. Vincent Street, Glasgow, Applicant's Agents.