A Process for Thawing Frost out of Land, Stone, Mortar, and the like.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
A Process for Thawing Frost out of Land, Stone, Mortar, and the like.
PETER WATT, Draper and Clothier, 59, Belle Vue Road, Leeds, Yorkshire, do
hereby declare the nature of this invention to be as follows;-
An apparatus or machine to produce flame and hot air. The blast is produced by
a fan driving the air through a fire of coal coke gas, oil, spirits, and the like, down
a pipe into a cistern.
The return hot air & gases traveling upwards again to the forge. The motive
power may be clock action manual electricity steam and the like. The machine
either stationary or on wheels as for thawing pavements or streets, when the
travelling wheels may be the motive power. The apparatus may be used with or
without a cistern, the cistern to vary in accordance with the kind of work required.
I claim that by the application of flame & hot air or hot air without flame, for
thawing frost with machine to be good subject matter for my application for a
patent.
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1907
I, PETER WATT, of 59, Belle Vue Road, Leeds, in the County of Yorkshire,
Engineer, 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 to the thawing of frost out of land, stone mortar and the like
by an apparatus or machine to produce hot air and flame or hot air without flame
and driving it where required I attain these objects with a machine or apparatus
illustrated in the accompanying drawings in which Figure 1 is a vertical section
of the machine Figure 2 is a plan of machine with furnace shewn in section.
A is a fan worked by hand or motive power of any description B the outlet for
cold blast to furnace. C a fire grate, D access door to grate, E is the fire F the
regenerator G the outlet for hot air and flame H, H are ball jointed or adjustable
pipes K is an adjustable shield L fire door M is the frame carrying fan and furnace
fitted with axles and wheels when necessary.
The whole of the furnace and regenerator are made of fire-brick or fire-resisting
materials enclosed in a circular iron casing N.
The blast produced by fan is driven through the fuel E which may be wood coal

page_text: coke oil spirit or other heat agents down the generator F through outlets G and
pipes H, Hthe flame and air being directed by these adjustable pipes on to the
place requiring thawing.
I may vary the shape and arrangement of the fan, furnace and outlet pipes with-
out departing from the nature of my said invention and I may form a universal
joint to the nipe H so as to enable the position of the nozzle to be varied as may be
required.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is:
1st. The new machine for thawing frost out of land, stone, mortar and the like
substantially as herein set forth and illustrated upon the accompanying drawings.
2nd. In machines for thawing frost out of land stone, mortar and the like the
combination of the fan- A furnace E and outlet pipe H substantially as herein set
forth & illustrated.
Dated th
041
1
1000