IMPROVEMENTS IN STEAM PILE DRIVING APPARATUS
Year: 1884

page_text: Í NATHAN GOLD KIMBERLEY of Tottenham in the county of Middlesex
Engineer do hereby declare the nature of my Invention for IMPROVEMENTS IN
STEAM PILE DRIVING APPARATUS to be as follows:-
My invention relates to steam pile driving apparatus which rests on and is
supported when in operation by the pile it is driving wherein steam acts on a
piston in a steam cylinder the piston being permanently or temporary connected
by suitable means to the weight or rammer so as to cause the weight or rammer to
rise as the piston is acted on.
My improvements consist in accelerating or increasing the speed at which the
weight or rammer falls after the steam is cut off from the steam cylinder by
causing steam preferably the steam exhausting from the steam cylinder with or
without the addition of fresh steam to act on the weight or rammer.
Suitable openings to be arranged for the escape of the steam so that the pressure
caused by the steam shall be removed from the weight or rammer before it comes
into contact with the head of the pile.
50
I NATHAN GOLD KIMBERLEY of Tottenham in the county of Middlesex
Engineer do hereby declare the nature of my invention for IMPROVEMENTS IN
STEAM PILE DRIVING APPARATUS and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement:
My invention relates to steam pile driving apparatus which rests on and is
supported when in operation by the pile it is driving wherein steam acts on a
piston in a steam cylinder the piston being permanently or temporary connected
by suitable means to the weight or rammer so as to cause the weight or rammer to
rise as the piston is acted on.

page_text: One method of carrying my invention into practise is illustrated by the
accompanying drawing wherein A represents the outside casing forming two
cylinders open at opposite ends with a passage through the centre for the
piston rod.
Openings at a are formed in the lower cylinder for the steam to escape through.
The casing A is attached to and supported by the central post C which rests on
the head of the pile that is being driven A loop is formed on the top of this post
to connect to the chain of the lifting appliance.
The piston D is formed on or fixed to the hollow piston rod d which passes from
the upper or steam cylinder to the lower cylinder wherein it is connected to the
weight or rammer E the passage between the two cylinders round the piston rod d
is made steam tight by the stuffing box F.
G represents the valve for opening and closing the steam passages to the upper
and from the upper to the lower cylinders H the steam inlet pipe J the connecting
rod the lever working on fixed centre K connected to the tappet rod L by the
regulating nut M.
The pile driver having been placed in position with its whole weight resting on
the head of the pile to be driven the passage through the valve G being open
steam from any suitable producer connected at H will enter the upper cylinder
under the piston D causing it to rise with the piston rod d and weight or rammer E
connected to it untill the top of the piston comes in contact with and lifts the
tappet rod L which being connected with the lever J' and connecting rod J closes
the steam passage through the valve and opens the connecting passages between
the upper and lower cylinders through which the stean enclosed in the upper
cylinder will pass and exert its force direct on the head of the weight or rammer E
reducing the time required to change the direction and accelerating the velocity at
which the weight or rammer commences to fall.
Before the weight or rammer E comes in contact with the pile any force
remaining in the steam will have exhausted itself through the openings a in the
lower cylinder.
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
In steam pile driving apparatus supported by the pile it is driving the
employment of steam for accelerating or increasing the speed at which the weight
or rammer commences to fall substantially in the manner herein before described.
Dated this 29th day of September 1884
N. G. KIMBERLEY.