Improved Apparatus for Coating Paving Blocks, other like Blocks, and Lengthy Supple Subjects with Tar Oil Pigments or other Liquids.
Year: 1895

page_text: Date of Application, 22nd Apr., 1895-Accepted, 22nd June, 1895
COMPLETE SPECIFICATION.
Improved Apparatus for Coating Paving Blocks, other like Blocks,
and Lengthy Supple Subjects with Tar Oil Pigments or other
Liquids.
We THOMAS WILLMOT of Toongabbie in the Colony of New South Wales
and MICHAEL THOMAS MORGAN of Arncliffe near Sydney in the said Colony
trading under the style or Firm of Willmot and Morgan, Contractors 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 to an improved apparatus by which the wooden blocks
commonly used for paving streets and other like paving blocks and other similar
blocks of timber or other material for other purposes and lengthy supple subjects
such as laths may be quickly and economically coated or covered or dipped in tar
oil pigment or other liquids or liquid preparations.
This improved apparatus for coating paving blocks other like blocks and lengthy
supple subjects with tar oil pigments or other liquids has as its essential feature a
continuous perforated or skeleton or grating or open worked shoot or enclosed
trough curved into and through a tank or vessel so that such shoot or trough will
in greater part be below the level of the liquid contents of said tank or vessel and
thus cause any solid passing or thrust through said shoot or trough to be immersed
in said liquid. The receiving end of the shoot or trough preferably extends some
little distance outwardly and above the top of the tank or vessel and the dis-
charging end also preferably has resilient scrapers or smoothers to remove excess
liquid from the solid being discharged. For tar pitch and such like requiring' to
be heated the tank or vessel is provided with a furnace or fire place underneath it
and the whole is preferably upon wheels.
But in order that we may be clearly, understood reference will now be made to
the drawings herewith in which
Figure 1 is a side elevation of an improved apparatus for coating paring blocks
other like blocks with tar oil pigments or other liquids specially devised for coating
wood blocks and laths for paving streets with tar and having duplicate shoots or
troughs. Figure 2 is an end elevation. Figure 3 a plan.
Figure 4 a longitudinal sectional elevation through one of the shoots or troughs.
Figure 5 a transverse sectional elevation and Figure 6 a sectional plan of the
same.
Figures 7 and 8 are respectively cross section and partial sectional plan on
enlarged scale of the shoots or troughs and
Figures 9 and 10 are respectively sectional elevation and sectional plan of the
discharge end of the shoots or troughs showing the scrapers or smoothers.
A tank or vessel A is set above a furnace or fire place H supported by side
wheels J and end or guide wheel J. The perforated shoot or trough B (in this
case in duplicate) is supported by the ends of the tank A and is sagged or curved
downwards so as to dip under the level of the liquid contents of said tank. The
receiving end of said shoot or trough B is spread or forms hopper mouth C while
its discharge end D has fixed thereto a top resilient scraper or spring smoother E
and similar side scrapers or smoothers E'. Paving blocks F are shown in the
drawings as passing through the shoots or troughs and a ring or eye-let G or other

page_text: support for a receiving tray for the coated blocks is shown under the discharge
ends of the shoots or troughs. In use the tar is placed in the tank A and fire
made in furnace H as well understood to keep said tar in a liquid or thin condition.
The blocks or other articles or lengthy supple subjects are inserted in hopper
mouth C and are forced through the shoot or trough B by their own weight and
the pressure of the following blocks cr by manual force until they emerge at the
other end from between the spring scrapers or smoothers E and E' and fall on to
the receiving tray. The tank or vessel A being kept filled with the tar or liquid
to about the level shown said tar or liquid finds its way through the perforations
in the shoots or troughs B and thoroughly coats or covers the block or article
passing through said shoots or troughs the scrapers or smoothers removing all
excesses. Although we have shown the trough B as made of perforated material
it might be made of bars as a grating or skeleton or of other construction through
which the liquid contents of tank A may freely pass.
We would have it understood that we do not confine ourselves to the precise
construction of the details of our improved apparatus for coating paving blocks
cther like blocks and lengthy supple subjects with tar oil pigments or other liquids
nor to the particular kinds of materials of which they may be constructed so long
as the nature of our invention be retained.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what
we claim is —
First. Improved apparatus for coating paving blocks and such like blocks with
tar oil pigments or other liquids the essential feature of which is a continuous
perforated or skeleton shoot or enclosed trough curved downwardly in and through
a tank or vessel substantially as herein described and explained.
Second. In apparatus of the class set forth the combination and arrangement
with a tank or vessel such as A of a perforated shoot or trough such as B having
preferably a receiving hopper end such as C and a discharging end with scrapers
or smoothers such as E and E' substantially as herein described and explained and
as illustrated in the drawings.
Third. The particular combination and arrangement of mechanical parts all
together forming an improved apparatus for coating paving blocks and such like
blocks with tar oil pigments or other liquids substantially as herein described and
explained and as illustrated in the drawings.
Dated this Eleventh day of March One thousand eight hundred and
ninety-five
Witness-
FRED WALsh.
THOMAS WILLMOT.
MICHAEL THOS. MORGAN.
Abel & Imray,
Agents for the Applicants.