Year: 1887

page_text: I CARL BRADER of Oldenburg in the Empire of Germany, Mill Manager 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 especially to improvements upon the dried peat or turf
coverings to be applied to steam or hot water pipes, cylinders, and boilers, to prevent
the radiation of heat therefrom for which Letters Patent for Great Britain were
granted to me bearing date the 16th day of April 1886, No. 5292.
The object of the present invention is to prevent the radiation of heat through the
joints of the sections of dried peat or turf which are found sometimes to open owing
to the further contraction of the peat or turf when exposed to excessive or prolonged
heat, and to allow of the escape of a certain amount of heat from such joints.
The nature of my said invention and the manner in which the same is to be
performed or carried into practical effect will be readily understood on reference to
the annexed sheet of drawings and the following explanation thereof.
According to my former Specification No. 5292 of 1886, the sides and ends of the
sections of dried peat or turf were made with a plain butt joint as represented at
Fig. 1. in the drawings annexed hereto and if any further contraction of the dried
peat or turf was caused by the excessive or prolonged heat to which it was exposed,
the joints were liable to become opened as shown by the dotted lines in Fig. 1 and a
considerable proportion of heat was liable to radiate through such open joints or seams,
and in order to obviate this according to my present invention 1 form grooves along
the sides of the sections (as represented at a, a Fig. 2) and in putting the sections
together I place in such grooves corresponding strips or tongues b, b which will cover
the said joint and prevent the radiation of heat even though the joint may be opened
slightly owing to contraction of the material by excessive heat as shown at Fig. 3.
In some cases in place of making the grooves and separate strips a, a and b, bas
shown at Figs. 2 and 3. I make the edges of the sections to overlap as shown at c, c
Fig. 4. or I make one of the sides with a groove d, d as shown at Fig. 5, and the

page_text: other side with a corresponding tongue or tenon e, e, which will produce the same
effect, that is to say, allow the material to contract without opening the joint so as to
permit of the radiation of heat through the same.
The ends of the sections I also propose to make either with an overlapping joint as
shown at Fig. 6. or with a tongue and groove joint as shown at Fig. 7. to provide
for the longitudinal shrinkage of the material.
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 improved method (substantially as hereinbefore described and illustrated by the
drawings annexed) of forming the joints of the dried turf or peat sections used for
covering steam or hot water pipes, cylinders, and boilers, to prevent the radiation of
heat through such joints.
GEORGE DAVIES,
4, St. Ann's Square, Manchester,
Agent for the Applicant.