AN IMPROVED HYGIENIC OR SANITARY CONCRETE FOR PREVENTING DANGEROUS EXHALATIONS follows
Year: 1884

page_text: I, JOHN FOTTRELL, of Dublin, in the County of Dublin, Ireland, Gentleman;
do hereby declare the nature of my said invention for "AN IMPROVED HYGIENIC
OR SANITARY CONCRETE FOR PREVENTING DANGEROUS EXHALATIONS
follows:-
כן
to be as
"
This Invention has for its object the production of an improved hygiene or
sanitary concrete, or composition, to be used in the formation of floors, roadways;
pavements, foundations, walls and so forth, possessing the quality of destroying
unhealthy and noxious vapors, and rendering the atmosphere of the locality puro
and wholesome.
For this purpose I propose to introduce into the cement, sand, or other material
used in the preparation of concrete, a suitable proportion of disinfectant or
antiseptic powder or liquid, the introduction of which will have the effect of
neutralizing or purifying any dangerous exhalations arising from impure particles
existing underneath the concrete.
A concrete or composition so prepared, when laid as a roadway, pavement, or
otherwise, will have, also, the effect of destroying any putrid or foul matter which
may percolate into the pores of such roadway, pavement, or otherwise, there being
more or less porosity existing in all concretes.
•

page_text: COMPLETE SPECIFICATION,
I, JOHN FOTTRELL of Dublin Gentleman do hereby declare the nature of my
said invention for E AN IMPROVED HYGIENIC OR SANITARY CONCRETE FOR PAVING
AND OTHER PURPOSES and in what manner the same is to be performed to be
particularly described and ascertained in and by the following statement :-
13
The subject of the present invention is a concretion consisting of a mixture of
finely ground granite and other materials with cement to which is added a powerful
disinfectant to be employed in paving public streets, causeways and pavements;
floors and basements of public or private buildings; the object boing to disinfect
and neutralize the malarious exhalations arising therefrom.
This is effected by rendering the concretion or cement antiseptic and disinfectant
by mixing with it some powerful disinfecting agent whether in a liquid or solid
form, such as carbolic acid and its compounds sulphites or sulphates, bleaching
powder or other purifying oxidizing and disinfecting matters; the proportion in
which these are added to the cement varying with the extent of the operations, or
the work to be effected.
The characteristic feature of the invention is that the deordorizing and antiseptic
properties of the pavement (which are imparted to it by the use of this hygienic
cement) are permanent, as by the intimate mixture of the disinfecting agents with
the coment they are as it were sealed in the material, which as worn by traffic is
constantly presenting a fresh surface, and by this means liberating a constant
supply of antiseptic vapour so purifying the atmosphere and nullifying any noxious
or foul odour arising from the incomplete cleansing of the public thoroughfares or
from the animal and vegetable litter so common in much frequented streets, and so
rendering the invention of great public utility both as a means of deodorizing and
neutralizing bad smells and in a measure assisting in checking the spread of disease
and infectious disorders.
Where the roadway is of wood, a layer of this cement placed. beneath the blocks
and pierced here and there, will allow the rain water to pass into the earth, so
preventing the wood from decomposition and nullifying the malarious exhalations
therefrom, especially noticcable after heavy rain falls, whilst the disinfectant
vapours are emitted and as it were injected in the ambient air.
Where stone is used for the roads or pavements the foundations do not require
perforation, as the water coming in contact with the hygienic cement absorbs
the antiseptic prepertics thereof evaporates and mixes with the surrounding
atmosphere.
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
1st The admixture with the ordinary cements employed in paving roadways, of
powerful disinfecting agents whether in a solid or liquid form oither simply or in
conjunction with other deodorizing matters.

page_text: 2nd The use of such antiseptic and hygienic cement or concretion laid in a layer
for paving road or footways basements of public and private buildings and for
other purposes.
3rd The use of this antiseptic cement (where wood is the upper surface of the
roadway) laid in a layer which is here and there pierced as and for the purposes
herein explained.