Improvements in or relating to the Surfacing and Burnishing of Wood, Metal, and other Materials.
Year: 1893

page_text: Date of Application, 4th Oct., 1893
Complete Specification Left, 3rd July, 1894-Accepted, 1st Sept., 1894
PROVISIONAL SPECIFICATION.
Improvements in or relating to the Surfacing and Burnishing of
Wood, Metal, and other Materials.
We, ROBERT JOSEPH DAY and ALFRED COLLINS of Atlas Works, Fann
Street, Aldersgate, in the City of London, Printing Material Manufacturers, do
hereby declare the nature of this invention to be as follows:-
:-
This invention relates to the surfacing and burnishing of wood metal or other
materials either with a flat or curved surface. The invention is particularly
applicable for the preparation of timber for wood blocks and the like for printing
purposes, but it may be used for other purposes as well as other materials.
the surface is to be curved suitable movement may be imparted to the bed or table
upon which the material to be treated is secured.
Where
We will describe the arrangements for dealing with a flat surface say a piece of
wood cut across the grain for engraving purposes, these blocks are usually required
of a thickness known in the trade as "type high" and each block is secured upon
a revolving table by means of screw dogs or the like so that each block is
successively brought underneath the surfacing and burnishing mechanism which is
set at the requisite height above the table which carries the blocks to allow of their
being the right thickness when finished.
The cutting and burnishing apparatus consists of preferably a steel ring having
teeth somewhat resembling saw-teeth upon its periphery which do the small
amount of cutting necessary to truly surface the block. Alternately with these
saw teeth are teeth or burnishers arranged to press with a flat or curved surface
upon the block which slowly travels underneath it and the ring thus toothed is
secured to a face plate carried upon a vertical spindle and the ring revolved to a
high speed in a horizontal plane. The table is revolved so as to bring the blocks
underneath the ring, the ring both cutting and burnishing the blocks as they pass
underneath and producing what for practical purposes may be considered to be an
absolutely plane and polished surface.
It will be readily appreciated that variations may be made in the arrangement
of the ring which might be a complete disc instead of a ring and the teeth instead
of being arranged alternately may be otherwise arranged and some or all of the
teeth may be capable of adjustment or removal. Also the arrangements may be
such that spring or other pressure can if desired be applied to facilitate the
burnishing operation. The cutting device may be arranged in a straight line or as
a band instead of in a circle if required, and to produce curved surfaces special
holding devices may be employed having the oscillating or other movement to
produce the required effect; the supporting table may reciprocate instead of
revolving.
Dated this 2nd day of Octuban 1002
W. P. THOMPSON & BOULT,
Agents for the Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements in or relating to the Surfacing and Burnishing of
Wood, Metal, and other Materials.
We, ROBERT JOSEPH DAY and ALFRED COLLINS, of Atlas Works, Fann
Street, Aldersgate, in the City of London, Printing Material Manufacturers, 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 the surfacing and burnishing of wood metal or other
materials either with a flat or curved surface. The invention is particularly
applicable for the preparation of timber for wood blocks and the like for printing
purposes, but it may be used for other purposes as well as other materials.
The invention will be best understood by reference to the accompanying drawings
in which;
Fig. 1 is a vertical section of portion of a machine constructed according to our
invention,
Fig. 2 is a plan of Fig. 1.
Figs. 3 to 6 inclusive are enlarged views of portions of the cutting and burnish-
ing disc or ring, Fig. 3 being an edge view, Fig. 4 a plan and Figs. 5 and 6 vertical
sections taken respectively on the lines 5-5 and 6-6 of Fig. 4.
Like letters indicate like parts throughout the drawings.
66
We will describe the arrangements for dealing with a flat surface say a piece of
wood cut across the grain for engraving purposes, such as, for an example we have
shown at A. These blocks are usually required of a thickness known in the trade
as type high" and each block is secured upon a revolving table B by means of
dogs C one or both of which may be operated by a screw C', which when both
dogs are movable may be provided with right and left handed threads or the
blocks A may be secured on the revolving table in any other convenient manner.
By these means each block is successively brought underneath the surfacing and
burnishing mechanism which is set at the requisite height above the table to allow
of the blocks being of the right thickness when finished.
The cutting and burnishing apparatus consists of preferably a steel disc D or
tool having teeth D₁ somewhat resembling saw-teeth upon its periphery which do
the small amount of cutting necessary to truly surface the blocks. Alternately
with these saw-teeth are teeth or burnishers D³ arranged to press with a flat or
curved surface upon each block which slowly travels underneath it and the disc thus
toothed is secured to a face plate E carried upon a vertical spindle E' and revolved
to a high speed in a horizontal plane.
The underside of the disc is preferably hollowed as indicated in Figs. 1, 5 and 6
so as to give the work clearance as soon as it has passed the cutting or burnishing
teeth. The table B is revolved so as to bring the blocks A underneath the disc D,
the disc both cutting by means of the teeth D' and burnishing by means of the
teeth D* the blocks A as they pass underneath and producing what for practical
purposes may be considered to be an absolutely plane and polished surface. The
arrows 6 and e respectively indicate the preferred directions of rotation of the
table B and disc D; this rotation however may be otherwise than as thus
indicated.
It will be readily appreciated that variations may be made in the arrangement
of the disc D which may be of ring shape instead of a disc and the teeth D¹ D'
instead of being arranged alternately as shown in the drawing may be otherwise
arranged and some or all of the teeth may be capable of adjustment or removal.
Also the arrangements may be such that spring or other pressure can if desired be
applied to facilitate the burnishing operation. The cutting device may be arranged

page_text: in a straight line or as a band instead of in a circle if required, and to produce
curved surfaces special holding devices may be employed having the oscillating or
other movement to produce the required effects. The supporting table also may
reciprocate instead of revolve.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that
what we claim is ;-
1. Cutting and burnishing wood metal or other material by means of the same
tool at one operation.
2. In apparatus such as described the combination with a cutter of one or more
burnishing teeth or surfaces substantially as described.
3. In apparatus such as described the combination with a cutter having one or
more cutting teeth or edges of one or more burnishers operated conjointly and
simultaneously therewith substantially as described.
4. In apparatus such as described the combination with a revolving cutter
having a series of cutting teeth or edges such as D₁ of a series of burnishing
teeth or projections alternating with the cutting teeth substantially as described
and illustrated in the accompanying drawings.
Dated this Second dew of July 1804
ROBERT JOSEPH DAY.
ALFD. COLLINS.
W. P. Thompson & Boult,
Agents for the Applicants