Improvements in Apparatus for Working Docks.
Year: 1897

page_text: Improvements in Apparatus for Working Docks.
I, BRICE TYDEMAN, of Syndale House, Cecil Road, Plaistow, in the County of Essex,
Engineer, do hereby declare the nature of this invention to be as follows:-
At present, every time a vessel leaves the dock by descending through the lock,
a certain quantity of water passes with it to the river or sea. Usually this water is
replaced either by opening the lock gates before high water and allowing the tide to
flow in, or by pumping from the river or sea. In either case great inconvenience
is caused by the silt deposited in the dock from the tidal water. In some docks
this evil is avoided either by admitting land water into the dock or by allowing the
river or sea water to deposit its silt in a reservoir and then pumping it into the dock.
It is only however in special cases that these remedies are possible and economical.
According to this invention I use the same water over and over again and to enable
this to be done I combine with the dock and lock a pump drawing water from the
lock and delivering it into the dock. When a vessel has passed from the dock into
the lock and the upper gates are closed the level of the water in the lock is lowered
not as is usual by letting it run through sluices into the river or sea but by pumping
it into the dock.
Improvements in Apparatus for Working Docks.
I, BRICE TYDEMAN, of Syndale House, Cecil Road, Plaistow, in the County of Essex,
Engineer, 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:-
At present, every time a vessel leaves the dock by descending through the lock, a
certain quantity of water passes with it to the river or sea. Usually this water is
replaced either by opening the lock gates before high water and allowing the tide to
flow in or by pumping from the river or sea. In either case great inconvenience is
caused by the silt deposited in the dock from the tidal water. In some docks this
evil is avoided either by admitting land water into the dock or by allowing the river or
sea water to deposit its silt in a reservoir and then pumping it into the dock. It is
only however in special cases that these remedies are possible and economical.
According to this invention I use the same water over and over again and to
enable this to be done I combine with the dock and lock a pump drawing water from
Price 8d.1

page_text: the lock and delivering it into the dock. When a vessel has passed from the dock
into the lock and the upper gates are closed the level of the water in the lock is
lowered not as is usual by letting it run through sluices into the river or sea but by
pumping it into the dock.
Preferably also the level of the water in the lock is raised when required by
pumping water from the dock back into the lock.
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 :-
1. The combination of a dock, a lock and a pump drawing water from the lock
and delivering it into the dock.
2. Apparatus for working docks substantially as described.