Improvements relating to the Glazing of Clay Tobacco Pipes.
Year: 1896

page_text: Date of Application, 16th Dec., 1896
Complete Specification Left, 15th Sept., 1897-Accepted, 4th Dec., 1897
PROVISIONAL SPECIFICATION.
Improvements relating to the Glazing of Clay Tobacco Pipes.
I, CHARLES FRANCIS RAVENHILL, of 23 Brook Street, Gloucester, in the County
of Gloucester; Tobacco Pipe Manufacturer; do hereby declare the nature of this
invention to be as follows;-
This invention relates to the glazing of clay tobacco pipes for the purpose, of
giving them the appearance of meerschaum pipes before and after being smoked
and at the same time assisting the clay pipes to colour naturally.
To produce an imitation of a meerschaum pipe the glazing compound is made of
gun dammar or tar dissolved in turpentine and added to polishing varnish. The
clay pipe is first sand papered smooth, then coated with the glazing compound
applied with a soft brush and then stoved at a temperature of about 150°
Fahrenheit for about 24 hours. After stoving the pipe has a bright and shiny
surface.
Dated this 15th day of September 1897.
Improvements relating to the Glazing of Clay Tobacco Pipes.
I, CHARLES FRANCIS RAVENIHILL, of 23 Brook Street, Gloucester, in the County
of Gloucester; Tobacco Pipe Manufacturer; 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 glazing of clay tobacco pipes for the purpose of
giving them the appearance of coloured meerschaum pipes before and after being
smoked and at the same time assisting the clay pipes to colour naturally.
To produce an imitation of a meerschaum pipe the glazing compound is made of
the following ingredients in about the proportions stated. Half an ounce of gum
dammar dissolved in four ounces of turpentine and added to fifteen ounces of
polishing copal varnish. The clay pipe is first sand papered smooth, then coated
with the glazing compound applied with a soft brush and then stoved at a
temperature of about 150° Fahrenheit for about 24 hours. After stoving the pipe
has a bright and shiny surface.
By varying the proportions of the ingredients above given the clay pipe may be
coloured lighter or darker as required or may be so coloured as to imitate a
briar-root pipe.
Where a blacker colouring is required, such for instance, as an imitation of an

page_text: asbestos pipe, the ingredients are slightly varied and the clay pipe is subjected to
a special burning process before glazing.
The clay pipe is first sand papered smooth and then put into a fire clay pot and
sufficient cork dust and sawdust added to cover the pipe. The pot is then covered
up airtight with a sheet of paper coated with soft pipe clay or like plastic material.
The pot is then placed over a fierce fire until the sawdust and cork dust are burned
away, when it is allowed to cool, the clay tobacco pipe removed, dusted and then
given a coating of the glazing compound mado of the following ingredients in
about the proportions stated. Five ounces of tar dissolved in four ounces of tur-
pentine and added to twenty ounces of black polishing Pontypool varnish. The
pipe is then stoved at a temperature of about 150° Fahrenheit for about 24 hours.
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. The process herein described for treating clay tobacco pipes to produce imita-
tions of meerschaum or briar-root pipes consisting in first sand papering the clay
pipe smooth, then coating it with a glazing compound of gum dammar, turpentine
and polishing copal varnish and subsequently stoving it at a temperature of about
150° Fahrenheit for about 24 hours.
2. A glazing compound for clay tobacco pipes to produce imitations of
meerschaum or briar-root pipes consisting in gum dammar dissolved in turpentine
and added to polishing copal varnish in about the proportions substantially as
herein specified.
3. The process herein described for treating clay tobacco pipes to produce imita-
tions of asbestos pipes consisting in first sand papering the clay pipe smooth, then
burning it in a sealed fire clay pot with cork dust and sawdust until these latter
are burned away, then, after cooling, coating the pipe with a glazing compound of
tar, turpentine and black polishing Pontypool varnish and subsequently stoving it
at a temperature of about 150° Fahrenheit for about 24 hours.
4. A glazing compound for clay tobacco pipes to produce imitations of asbestos
pipes consisting in tar dissolved in turpentine and added to black polishing
Pontypool varnish in about the proportions substantially as herein specified.
Dated this 15th day of September 1897.
F. W. GOLBY,
36 Chancery Lane, London, W.C., Patent Agent for the Applicant.