Improvements in the Manufacture and Production of Slabs or Blocks for Steps and Pavements.
Year: 1892

page_text: Date of Application, 20th Apr., 1892
Complete Specification Left, 20th Jan., 1893-Accepted, 18th Mar., 1893
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture and Production of Slabs or Blocks
for Steps and Pavements.
I, GEORG MARTENSTEIN of Eppstein in the Empire of Germany, Manu-
facturer do hereby declare the nature of my invention to be as follows
This invention relates to the manufacture of pressed plates slabs or blocks of
asphalt or similar composition in which interwoven reeds, rushes, wire or the like
and other materials are incorporated as hereinafter described.
The asphalt blocks or plates as heretofore manufactured consisting of a number
of layers of asphalt pressed together present the great disadvantage that when
exposed to heat and in particular when laid in sloping or inclined positions the
individual layers are apt to creep or slide which has the effect of distorting the
surface. This is rendered impossible in plates or blocks manufactured according to
this invention which are also far more durable than the plates or blocks of ordinary
manufacture.
The improved blocks are made in iron moulds into which any suitable form of
asphalt such as melted asphalt asphalt powder, asphalt paste or other material
possessing similar properties is introduced with the addition of coarse sharp edged
or rough fragments of hard stone such as porphyry, granite, basalt syenite and the
like. These materials are then subjected to such pressure as is sufficient to reduce
them to about half the thickness of the finished plate.
A layer of interwoven reeds, rushes, wire or other similar materials is then laid
upon the pressed section of the plate and a second layer of melted asphalt or the
like is placed thereon and pressed.
Upon this latter layer a layer of melted asphalt or the like combined with finely
broken or granulated stone, emery or glass is placed and likewise subjected to
considerable pressure.
The plates slabs or blocks may be made with any suitable number of insertions
or intermediate layers according to the thickness of the finished article and the
reeds, rushes, wire or other like material incorporated therewith may be used
separately or in any desired combination.
The plates thus manufactured are extremely strong and durable, they are not
liable to become distorted by ordinary heat and present a rough and very hard
surface.
Dated this 20th day of April 1892.
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London, W.C., Agents.
COMPLETE SPECIFICATION.
Improvements in the Manufacture and Production of Slabs or Blocks
for Steps and Pavements.
I GEORG MARTENSTEIN of Eppstein in the Empire of Germany Manufacturer
do hereby declare the nature of this invention and in what manner the same is to
O be performed to be particularly described and ascertained in and by the following
5
statement:
This invention relates to the manufacture of pressed plates slabs or blocks of
asphalt or similar composition in which interwoven reeds, cane rushes grasses, wire
or the like and other materials are incorporated as hereinafter described.
The asphalt blocks or plates as heretofore manufactured consisting of a number
D27

page_text: of layers of asphalt pressed together present the great disadvantage that when
exposed to heat and in particular when laid in sloping or inclined positions the
individual layers are apt to creep or slide upon one another which has the effect of
distorting the surface. This is rendered impossible in plates or blocks manufactured
according to this invention which are also far more durable than the plates or 5
blocks of ordinary manufacture.
The improved blocks are made in iron moulds into which any suitable form of
asphalt such as melted asphalt, asphalt powder, asphalt paste or other material
possessing similar properties is introduced with the addition of coarse sharp edged
or rough fragments of hard stone such as porphyry, granite, basalt syenite and 1
the like. These materials are then subjected to such pressure as is sufficient to
reduce them to about half the thickness of the finished plate.
A layer of interwoven reeds, rushes, wire or other similar materials is then laid
upon the pressed section of the plate and a second layer of melted asphalt or the
like is placed thereon and pressed. Upon this latter layer a layer of melted 1
asphalt or the like combined with finely broken or granulated stone, emery or
glass is placed and likewise subjected to considerable pressure.
The plates, slabs or blocks may be made with any suitable number of insertions
or intermediate layers according to the thickness of the finished article and the
reeds, rushes, wire or other like material incorporated therewith may be used 2
separately or in any desired combination.
The plates thus manufactured are extremely strong and durable, they are not
liable to become distorted by ordinary heat and present a rough and very hard
surface.
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 :-
The manufacture and production of slabs or blocks for steps and pavements
composed of compressed layers of molten asphalt (with the addition of coarsely
granulated and finely pulverized hard stone) combined with insertions of interwoven
řeeds, rushes, wire or the like substantially as and for the purpose hereinbefore
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, Agents.