Improvements in Pyrographic Instruments for Drawing on Wood or other Material by Charring.
Year: 1890

page_text: Date of Application, 2nd Aug., 1890
Complete Specification Left, 14th Feb., 1891-Accepted, 18th Apr., 1891
Improvements in Pyrographic Instruments for Drawing on Wood or
other Material by Charring.
We, CHARLES THOMAS ABBOTT and STEPHEN WALTER ABBOTT, both of
Southall, in the County of Middlesex, Bechive and Appliance Manufacturers and
Manufacturers of White Wood Furniture, do hereby declare the nature of this
invention to be as follows:-
Our invention relates to the process of pyrography or drawing on wood or other
substance by means of an instrument such as the Paquelin thermo-cauter, and the
invention has for its object to adapt the above named instrument to the particular
requirements of drawing by superficially charring the material to be drawn upon.
Our invention has first for object to provide a charring point or pencil adapted
by its form to produce fine incised lines delicate shades and stipples and also
broad effects such as are required for shadows and backgrounds.
For this purpose the point or pencil is made of a tapering curved tusk-like form,
that is to say, instead of the ordinary broad rounded and flattened point of the
thermo-cauter it is tapered to a fine point bent towards one side so that by suitably
holding the instrument either the point or the broad rounded surface is available
according to the effect it is desired to produce.
Our invention has further for its object to provide impression or branding devices
adapted to be applied to the charring point or pencil and to be heated by
conduction therefrom for the purpose of producing conventional and other designs
suited for borders and other ornamental work. These devices are generally of
hollow, stamp, or cutter like form fitting by a socket upon the charring point or
pencil proper and having the acting edge variously shaped according to the
conventional or other design to be produced. Under this head may be included a
needle carried by a socket similarly fitting on the charring point or pencil for the
production of very fine lines and artistic effects which the latter itself is too blunt
and too highly heated to produce.
Our invention has further for its object to prevent as far as possible the artist's
hand being incommoded by the flexible tube by which the benzoline vapor is
conveyed to the instrument and to this end it consists in connecting the
said tube to the handle of the instrument at one side thereof at about the
middle of its length or at the point of least motion so as to cause no impediment
to the perfect freedom of the hand. With the same object and to prevent
entanglement of or accidental contact of the heated pencil with the flexible
tube, it is preferred to make the connection with the handle lie within the
hollow of the artist's hand and to provide means whereby the tube may be carried
along and held to the arm of the artist say as far as the elbow so as to be entirely
out of the way.
Our invention has further for its object to prevent the transmission of heat to
the artist's hand by the overheating of the handle by conduction during a
prolonged use of the instrument, and to this end the improvement consists in
sheathing the handle with cork which being a very poor conductor of heat affords
effectual protection to the fingers.
Dated this 2dn dair of Aron 1800

page_text: COMPLETE SPECIFICATION.
Improvements in Pyrographic Instruments for Drawing on Wood or
other Material by Charring.
We, CHARLES THOMAS ABBOTT and STEPHEN WALTER ABBOTT, both of
Southall, in the County of Middlesex, Beehive and Appliance Manufacturers and
Manufacturers of White Wood Furniture, 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:-
Our invention relates to the process of pyrography or artistic drawing on wood or
other substance by superficially charring the material to be drawn upon by means
of an instrument, such as the Paquelin thermo-canter; and the invention has for
its object to adapt the above named instrument to the particular requirements of
artistic pyrography and to provide accessory means of rapidly producing more or
less conventional effects by that process.
Our invention has, first, for object to provide a charring point or pencil adapted
by its form to produce fine incised lines, delicate shades and stipples, and also
broad effects such as are required for shadows and backgrounds.
Our invention has, further, for its object, to provide impression or branding
devices adapted to be applied to the charring point or pencil and to be heated by
conduction therefrom, whether for the purpose of producing certain artistic effects.
for which points of various shapes would be required, or for producing conventional
and other designs suited for borders and other ornamental work.
Our invention has, further, for its object, to prevent, as far as possible, the
artist's hand being inconunoded by the flexible tube by which the benzoline vapor
is conveyed to the instrument, and from being burnt by the overheating of the
handle by conduction during a prolonged use of the instrument.
Reference is to be had to the accompanying drawings, forming part of this
Specification, wherein
Figure 1 is a longitudinal view of the instrument provided with the improved
point.
Figure 2 is an external view of the improved point, with one of the branding
devices shewn in longitudinal section as applied thereto, for the production of
conventional effects, and also separately in end view.
Figures 3 and 4 shew a longitudinal section and longitudinal elevation and end
views of other forms of branding devices capable of being applied to the said
point.
Figures 5 and 6 shew the two modes of using the point, according to the effect
to be produced.
The same letters of reference indicate like parts in all the figures.
The instrument shown in Figure 1 is constructed and heated in all respects like
the Paquelin thermo-canter except that the charring point or pencil A, shewn in
that figure and on a larger scale in Figure 2, is made of a tapering curved tusk-like
form, that is to say instead of the ordinary broad rounded and flattened point of
the thermo-cauter it is tapered to a fine point bent towards one side so that by
suitably holding the instrument either the point or the broad rounded surface is
available, according to the effect it is desired to produce, it being only necessary
to turn the instrument round in the hand to bring the point from the position
shewn in Figure 5 to that shewn in Figure 6, or vice versa, according as it is desired
to produce fine lines or broad effects.
The impression or branding devices B, for the production of repetitions of the
same conventional or other design, are generally of hollow stamp or cutter-like
form fitting firmly by a socket portion & upon the charring point A, as shewn in
Figure 2, so as to be heated by conduction therefrom, the acting edges b₁ of said
devices being variously shaped, according to the conventional or other design to be
produced, some examples being shewn in the various end views of the said devices.

page_text: These branding devices are made of short lengths of thin platinum tube brought
to the desired form for the slightly conical socket and the acting edge
preferably by stretching and compressing the tube by means of suitable
instruments.
or
Instead of conventional forms, such as shewn in Figures 2, 3 and 4, with cutter-
like edges, these attachments to the main point A may be points of various forms
gradations for producing certain artistic effects fitting on the main point. A and
being heated by conduction therefrom, as above described in respect of said
branding devices. For instance, these secondary points may be more or less broad,
bulbous, blunt, or fine, as compared to the point A.
C is the vapor supply tube, and the second improvement consists in connecting
the said tube to the handle D of the instrument at one side thereof at about the
middle of its length, which is the point receiving least motion from the artist's
hand, so as to cause no impediment to the perfect freedom of manipulation, instead
of connecting the tube to the upper end of the handle, as heretofore. With the
same object and to prevent entanglement of, or accidental contact of the heated
point A with, the flexible tube C, it is preferred to make the connection with the
handle lie within the hollow of the artist's hand and to provide bands or other
means, as will be readily understood, whereby the tube may be carried along and
held to the arm of the artist, say, as far as the elbow, so as to be entirely out of
the way. The handle D is sheathed in an outer tube of cork E which being
very poor conductor of heat, affords effectual protection to the fingers.
a
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
1. Constructing the operating point of the pyrographic instrument described, of
a curved tapered or tusk-like form, substantially as, and for the purpose, specified.
2. The combination, with the operating point of the pyrographic instrument
described, of impression or branding devices of various forms, fitting on the
operating point so as to be firmly held thereby and be heated by conduction
therefrom, as described.
3. The herein described instrument having the flexible vapor supply tube
connected laterally to about the middle of the handle of the instrument, and
supported by the arm of the operator, and the metallic handle of the instrument
sheathed with cork or other poor conductor of heat, as specified.
C. T. ABBOTT.
S. W. ABBOTT.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.