Improved Pasteboard Building Material.
Year: 1893

page_text: Date of Application, 18th Feb., 1893-Accepted, 15th Apr., 1893
COMPLETE SPECIFICATION.
Improved Pasteboard Building Material.
I FREDERICK WILLIAM GOLBY of 36 Chancery Lane, in the County of
Middlesex, Patent Agent, do hereby declare the nature of this invention, as com-
municated to me by Emil Fischer of Rawitsch, in the Empire of Germany,
Architect, 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 an improved pasteboard building material, consisting of
pasteboard sheets provided with corrugations like corrugated plates but so that the
corrugations have a dovetail cross section.
It is a well known fact that pasteboard has long been in use for coverings of roofs
or other parts of buildings, but hitherto the sheets of pasteboard used were flat.
When employed in the ordinary way these sheets serve as an insulating covering,
but when employed in the manner herein proposed, viz. :-folded or corrugated
sheets, the grooves or corrugations of which have a dovetail cross-section, they
give not only a good insulation but they possess also a certain free bearing strength
and allow the air to pass freely to the covered parts of the building.
The annexed drawing represents two modifications of dovetail section corrugated
pasteboard sheets and their employment as building material.
Figures 1 to 3 shew how to apply the pasteboard as an insulating material for
boardings and walls.
In the grooves "a" formed by the corrugated sheets of pasteboard "6" the
air may pass along and touch the wooden parts, avoiding thereby all destructive
influences. The drawing shews that the corrugated pasteboard sheets, having a
dovetail cross section and laid in strata or layers one upon another, forms a very
good material for carrying and holding plastering, because the latter sticks fast in
the dovetail grooves. The pasteboard may therefore serve as plastering carrier or
lathwork and considerably increase fireproofness.
Figures 4 to 6 shew how to employ corrugated pasteboard in strata as material
for covering roofs. The sheets of pasteboard "b catch one into the other like
tiles, and are completely protected against atmospheric influences and sunbeams by
an upper massive layer of cement or asphalte.
A roof covering of such corrugated pasteboard sheets is preferable to the
commonly used coverings of wood cement or to any other material in consequence
of its cheapness and its ability of being easily attached to roofs etc., and because
the loose layers of sand and gravel which require special means of fastening, are
entirely dispensed with, and a reliable circulation and ventilation of air to and
from the wooden parts of the building is secured.
Of course, the aforesaid examples do not exhaust the applications of this new
corrugated pasteboard, but further description of its applications is not required, as
any architect or builder will recognise them without further explanation.
It is evident that the corrugated form may be applied to usual asphalte pasteboard
as well as to other sorts of pasteboard, provided with sticking, hardening and
waterproofing matters on one or on both sides.
Having now particularly described and ascertained the nature of this said
invention and in what manner the same is to be performed, I declare that what I
claim is :-
Pasteboard building material. consisting of corrugated nosteboard.
1

page_text: corrugations
specified.
or grooves of which have a dovetail cross section, substantially &g
101
T
1000
F. W. GOLBY,
36, Chancery Lane, London, W.C.