Improvements relating to the Means employed for Effecting Rapid and Economical Transhipment of Coal, Coke, and other materials.
Year: 1892

page_text: Date of Application, 17th Dec., 1892-Accepted, 28th Jan., 1893}
COMPLETE SPECIFICATION.
Improvements relating to the Means employed for Effecting Rapid
and Economical Transhipment of Coal, Coke, and other materials.
We, ALEXANDER WINTON ROBERTSON, and JAMES ROBERTSON, both of the
Custom House Engine Works, Victoria Docks, London, E., Engineers, do hereby
declare thenature of this invention and in what manner the same is be performed,
to be particularly described and ascertained in and by the following statement :-
In the Specification of the invention of A. W. Robertson (one of the above-
applicants) No. 14,475 of 1889 is described certain improved means for shipping
and unshipping coal, coke and other material whereby in accordance with the
invention above identified rails are placed longitudinally along the floor of a barge,
and upon these rails, and capable of traversing the same by means of rollers or
wheels are disposed any convenient number of winches provided with improved
means of reversing the motion of the drums or barrels of same.
These winches are capable of attachment, or of being secured, to the rails at any
desired spot, so that the operation of loading or unloading may be carried on at
same time either from each end or both ends, or from both ends and centre portion,
or from one end and centre portion, or from centre portion only of barge.
It is set forth in the Specification of the Patent above referred to that it forms a
feature distinctive of said invention that the necessity for the employment of what
are known in nautical phraseology as "fair leads " or "fair leaders" is dispensed
with. Now we have found that under certain circumstances the use of "fair leads"
or "fair leaders" will be found to be advantageous when used in combination with
the apparatus described in the Specification of the invention of prior date hereto
above identified.
In order that the nature and objects of our present invention may the better be
understood we have appended the accompanying sheet of drawings (reference also
being had to those accompanying the Specification of Patent No. 14,475 above
identified) in which
Figure 1 is a part longitudinal sectional elevational view.
Figure 2 a transverse sectional view.
Figure 3 a detail sectional elevational view of one of the "fair leads
leaders" to an enlarged scale, and,
Figure 4 a plan view of Figure 3.
"
66
or fair
Figure 5 is a diagrammatic view to a reduced scale relatively to the views
Figures 1 to 4 appended for the purpose of illustrating the relative positions of the
barge with winches fitted on board thereof as set out in the Specification of Patent
No. 14,475 and of the vessel to be unloaded when the latter is situated astern of
the unloading barge. The same letters of reference are employed throughout the
several views to denot like or corresponding parts in each.
A are the steam winches. The "fair leads ""
or "fair leaders" consist of the
pulley or sheave a in rotatable carrier a¹ adapted to the top portion of the barge B
with collar al underneath. 6 is a set screw to allow of the carrier and pulley being
fixed at any desired angle relatively to the longitudinal axis of the barge.
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 :-
In apparatus such as that described in the Specification of Patent No. 14,475 of

page_text: 1889 herein referred to, the use of "fair leads
purposes herein set forth.
Dated this 2nd day of December 1892.
"
or "fair leaders" as and for the
JAMES
STEVENSON,
Gray's Inn Chambers, 20, High Holborn, London, W.C.,
Agent for Applicants.