Year: 1896

page_text: Date of Application, 13th Aug., 1896
Complete Specification Left, 9th Mar., 1897-Accepted, 17th Apr., 1897
I, CHARLES PICKRING, of No. 100 Main Street, in the Village of Richmond
Station, in the County of Richmond, and Province of Quebec, Dominion of
Canada, Locomotive Foreman, do hereby declare the nature of this invention to be
as follows:-
My invention relates more particularly to smoke stacks for locomotive running
sheds or round-houses, although it is equally applicable as a smoke stack or chimney
for any form of building.
The invention has for its object to provide a smoke stack that will be more
durable, require less labor and cost less than smoke stacks hitherto produced, as
well as being much lighter since it may be made of wood, and yet be capable of
withstanding as great a degree of heat as smoke stacks or chimnies heretofore used,
besides being adjustable.
My invention may be said, briefly, to consist in coating the inside face of the
material, of which the smoke stack or chimney is made, which may even be wood
or similar combustible material, with sand or other petrifiable material caused to
adhere thereto preferably by first painting the inside of the stack or chimney, and
then applying the sand while the paint is wet.
The combination of paint and sand when subjected to the action of the gases,
smoke and heat passing through the stack becomes gradually petrified or converted
into a stony hardness capable of resisting any cutting instrument, such as a knife or
saw, and forms an absolutely fire proof coat or layer thus allowing the use of
combustible material, such as wood or any other cheap and light material in the
construction of the stack or chimney. The invention may be said, further, to
consist in the special construction of the stack and forming the top of same
adjustable, and tapered towards its upper end.
Dal 191
I, CHARLES PICKRING, of No. 100 Main Street, in the Village of Richmond
Station, in the County of Richmond, and Province of Quebec, Dominion of
Canada, Locomotive Foreman, 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 more particularly to smoke-stacks for locomotive running-
sheds or roundhouses, although it is equally applicable as a smoke-stack or chimney
for any form of building.
The invention has for its object to provide a smoke stack that will be more
durable, require less labor, and cost less than smoke-stacks hitherto produced, as
Price 8d1

page_text: M
well as being much lighter, since it may be made of wood, and yet be capable of
withstanding as great a degree of heat as smoke-stacks or chimneys heretofore
used, besides being adjustable.
My invention may be said, briefly, to consist in coating the inside face of the
material of which the smoke-stack or chimney is made, which may even be wood
or similar combustible material, with sand or other vitriable material, caused to
adhere thereto preferably by first painting the inside of the stack or chimney and
then applying the sand while the paint is wet. The combination of paint and sand
when subjected to the action of the gases, smoke, and heat passing through the
stack becomes gradually petrified or converted into a stony hardness capable of
resisting any cutting instrument, such as a knife or saw, and forms an absolutely
fireproof coat or layer, thus allowing the use of combustible material, such as
wood or any other cheap and light material, in the construction of the stack or
chimney.
The invention may be said, further, to consist in the special construction of the
stack and forming the top of same adjustable and tapered toward its upper end, as
more particularly hereinafter described and claimed."
For full comprehension, however, of the invention, reference must be had to the
accompanying drawings, forming a part of this specification, in which like symbols
indicate the same parts, and wherein―
Figure 1 is a side elevation of my improved smoke-stack or chimney;
Figure 2 a similar view thereof, but with its sections separated for purposes of
illustration;
Fig. 3 a transverse horizontal sectional view taken on line 3, 3, Fig. 1; and
Fig. 4 a similar view to Fig. 3, but only of a portion thereof enlarged.
I consider it advantageous for many reasons to construct the smoke stack or
chimney in sections-viz. a body section, a top section, and a flared bottom section
all secured together in any suitable manner.
The body section is preferably tapered toward its upper end and is formed of a
series of tapered strips 5, of wood, bound together by bands 6, preferably of iron
and movable, and bands 7, preferably of wood, thus forming a rectangular conduit
tapering slightly from one end to the other, and the inside face thereof is coated
with sand by first painting such inside face and then applying the sand while the
paint is wet. This may be done to each strip of wood before they are bound
together but preferably when the parts are formed in two halves ready to be put
together.
The top section is constructed similarly to the body section except that it is
straight throughout its length and has a band 9, of extended width and preferably
of wood, secured to and adapted to project beyond the lower end thereof in order to
receive the upper end of the body-section. The upper end of this top section may
be furnished with any desired form of chimney-jack 10, of any length.
The bottom section is also preferably constructed similarly to the body-section
excepting that it is tapered outward from the top to the bottom thereof and to a
much greater extent than such body-section and the strips 12 thereof are bound
together by bands 13 and 14, preferably of wood, these last-mentioned sections
being preferably secured together by means of strips 15, each secured at one end
to the bottom of the body-section and their other ends adapted to fit over and be
secured to the upper end of the bottom section.
It will be obvious that the smoke-stack or chimney can be made in one piece if
desired, and of any desired shape or of any suitable material, and many other
changes made without departing from the spirit of my invention.
Having now particularly described and ascertained the nature of the said inven
tion and in what manner the same is to be performed I declare that what
claim is:-
1. A smoke-stack or chimney having its inside face coated with sand, for the
purpose set forth.

page_text: 2. A smoke-stack or chimney formed of a combustible material presenting an
approximately smooth inside surface and such surface coated with a petrifiable
material for the purpose set forth.
3. A smoke-stack or chimney formed of wood presenting an approximately
smooth inside surface and such surface coated with a petrifiable material, for the
purpose set forth.
4. A smoke-stack or chimney formed of a combustible material and coated on
its inside surface with sand, for the purpose set forth.
5. A smoke-stack or chimney formed of wood and coated on its inside surface
with sand, for the purpose set forth.
6. A smoke-stack or chimney formed of wood and coated on its inside surface
with paint and sand, for the purpose set forth.
7. A smoke-stack or chimney rectangular in cross-section and formed of a
number of parallel wood boards with transverse straps holding same together, and
coated on its inside surface with petrifiable material, for the purpose set forth.
8. A wood smoke-stack comprising a body section, top section and flared bottom
section with its inside surface fireproofed, for the purpose set forth.
9. A wood smoke-stack rectangular in cross-section and comprising a body-
section, top section and flared bottom section with its inside surface fireproofed, for
the purpose set forth.
10. A wood smoke-stack rectangular in cross section comprising a body-section,
top section and flared bottom section, with strips 15 for connecting the last-named
sections together, for the purpose set forth.
11. A wood smoke-stack rectangular in cross section comprising a body-section,
top section and flared bottom section formed of a number of parallel wood boards
with transverse straps holding same together, the top section overlapping the
body-section and strips 15 for connecting the body and bottom sections together,
for the purpose set forth.
Dated this 9th day of March 1897.
For the Applicant,
W. LLOYD WISE,
46 Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.