Improvements in or Connected with Pipes Employed in the Manufacture of Illuminating Gas.
Year: 1887

page_text: Date of Application, 3rd Dec., 1887
Complete Specification Left, 1st Sept., 1888
Complete Specification Accepted, 12th Oct., 1888
Improvements in or Connected with Pipes Employed in the
Manufacture of Illuminating Gas.
1 ALGERNON FREEMAN FIRTH of Clifton Milis Brighouse in the County of York,
Carpet Manufacturer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to such metal pipes as in the manufacture of illuminating
gas are exposed to considerable heat, the object of the invention being to render such
pipes more durable by preventing actual contact between the flame, or heated gas, and
the pipe.
According to this invention in the manufacture of pipes for purpose aforesaid I
employ in combination with iron pipes fire clay, which I form into segmental slabs,
or clips, two or more of which enclose the diameter of the pipe and for such lengths
of the pipe as are not supported the blocks will be flanged and secured to each other
by bolts. The butt joints of the several lengths being also provided with projecting
and cavity locking pieces. For curved portions of the pipe the ends of the slabs are
cut at an angle, or on a radius line, the blocks or slabs will be of any convenient
length, and thickness, and afford facilities for repairs by replacement of one or more
slabs at any point where the ones previously used are defective or destroyed. Or I
encase the iron pipe in fire clay which is first thoroughly well tempered and worked
and afterwards steadily and evenly "fired."
Dated this 2nd day of December 1887.
WALTER BRIERLEY
Town Hall Buildings, Halifax,
Agent for the Applicant.

page_text: Manufacture of Illuminating Gas.
I, ALGERNON FREEMAN FIRTH of Clifton Mills, Brighouse in the County of York,
Carpet 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 such metal pipes as in the manufacture of illuminating
gas are exposed to considerable heat, the object of the invention being to render such
pipes more durable by preventing actual contact between the flame, or heated gas and
the pipe.
According to this invention, in the manufacture of pipes for purpose aforesaid I
employ in combination with iron pipes fire clay which I form into segmental slabs or 1
clips two or more of which enclose the diameter of the pipe and for such lengths of
the pipe as are not supported the blocks will be flanged and secured to each other by
bolts. The butt joints of the several lengths being also provided with.projecting and
cavity locking pieces. For curved portion of the pipe the ends of the slabs are cut at
an angle, or on a radius line, the blocks or slabs will be of any convenient length,
and thickness, and afford facilities for repairs by replacement of one or more slabs at
any point where the ones previously used are defective or destroyed. Or I encase
the iron pipe in fire clay which is first thoroughly well tempered and worked and
afterwards steadily and evenly "fired."
Such being the nature and object of this my invention, the following is a complete
description of same reference being had to the accompanying drawings
:-
Fig. 1. is an elevation in section of pipe encased in flanged earthenware cover.
Fig. 2. is a like view of cover having ears or lugs.
Fig. 3 is a plan view of Fig. 2 shewing the application to curved pipes.
Fig. 4 shews application of tempered fire clay to the pipe.
Fig. 5. shews application of an outer cover of earthenware similar to a sanitary
drain pipe.
Fig. 6 shews a form of locking for the end or butt joints.
At is the iron pipe encased by the semicircular halves of fire clay secured
together by means of the longitudinal flanges 3. 3 and bolts, the flanges being
preferably arranged on a vertical central line of the pipe in order not to obstruct the
application of heat to the sides of the pipe at 2. At Figs. 2 and 3 it will be seen that
the means of connecting the several halves consists of ears or lugs 4 placed at
intervals, and which afford little or no obstruction to the direct application of heat.
Fig. 4 shews the combination of fire clay 2 and iron pipe 1, the clay 2 in this case
being thoroughly worked up and tempered and applied as a covering for the pipe and
afterwards to be gradually and evenly fired. At 5 the pipe is encased in an earthen-
ware hollow cylinder which has been previously constructed and fired after the
manner of a drainage pipe. For the curved ends of pipes or pipes having flanges 6.6
2

page_text: the enclosing sockets -7 divided as illustrated by Fig. 2 are constructed so as to be
removable when damaged or worn out without displacement of the iron pipes the
smaller end 8 of the socketed pipe which enters the socket of the corresponding pipe
is somewhat smaller in diameter than the bore of the socket in order to permit the
tilting of the half pipe to effect the displacement, and putting together of the pipes,
and when all is in position the annular ring or space between the flange and end of
the pipe may be stopped or made up by fire clay. Fig. 6 illustrates a form of butt
joint for application to straight pipes where there is room for sliding the halves upon
the pipe the end covers being made up or completed by flanged or lugged pipes such
as shewn by Figs. 2 and 3.
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
The construction, application and use in combination with iron pipes of the earthen-
ware covers, substantially as herein described and illustrated by the annexed drawings
and for purpose set forth.