Improvements in Pile Driving Apparatus.
Year: 1887

page_text: PROVISIONAL SPECIFICATION.
Improvements in Pile Driving Apparatus.
JAMES GARVIE Junior, of 172 Fenchurch Street in the City of London Engineer,
do hereby declare the nature of my invention for IMPROVEMENTS IN PILE DRIVING
APPARATUS to be as follows:-
--
My Invention consists of a method of introducing Steam through Piston Rods in
the form of Tubes into the Cylinder or Monkey of a Pile Driver. In one of the
Piston Rods which is used to lift the Monkey I discharge the Steam from orifices on
the top side of the Piston. In the other Piston Rod I discharge the Steam through
the Piston on its underside, & by this means I give the Descending Monkey or
Cylinder the accelerated force caused by the pressure of Steam between the Piston
and the bottom of the Monkey. I also claim to work my system with one Piston
Rod having 2 Holes through it, one of the holes leading out of the top of the Piston,
and the other at the bottom of the Piston.
The admission and Exhaust I can work either by 3 way Cock, Slide Valve or other
suitable method.
I also claim to work the same system by means of Water pressure instead of Steam.
Bighth day of January 1887

page_text: Improvements in Pile Driving Apparatus.
JAMES GARVIE Junior of 172 Fenchurch Street in the City of London 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:
My invention consists of a method of introducing Steam through Piston rods in 5
the form of tubes into the Cylinder or Monkey of a Steam Pile driver. I can use
one large Piston rod with 2 holes through it but I prefer to use 2 Piston rods as
shown in my drawing. The steam used for lifting the monkey is discharged above
the piston and the steam for accelerating the speed of the monkey in its descent is
discharged under the piston.
I can also work by means of water pressure.
1
In the accompanying drawing A represents the Cylinder or Monkey of a Steam
Pile Engine, B represents the frame of the Pile Engine along which the monkey
slides upwards and downwards being kept in position by means of the slides C. The
2 rods D. D. are fixed at the lower end to the Pile by means of a Bolt E passing 1
through the Pile, at the end of this bolt is fixed a slide F which keeps the Pile in a
vertical position.
The rods D. D. are fixed at the top to a cross head G, having suitable springs H. H.
to relieve the shock.
The cross head G carries 2 piston rods I & J. These piston rods are tubular and
fixed to the piston K in any suitable manner.
Both Piston rods are connected at the top to a double 3 way Steam Cock or Valve L
to which 2 connections are made M & N, M being the inlet branch for steam and N
being the outlet branch or exhaust.
O is the plug made in 2 pieces which regulates the steam in the 3 way cock or
valve and is worked by a lever or any other suitable means.
Now the action of my Steam Pile Driver is as follows.
In the drawing the monkey is shown resting on the top of the Pile. The Plug O
is turned round so as to allow the steam to descend through the Piston rod I and
discharge through the openings over the top of the Piston thus lifting the Monkey.
While the steam is thus descending through Piston rod I the exhaust steam is
ascending through Piston rod J and discharging into the atmosphere at N.
The Monkey is thus raised to the extreme height of its stroke the Plug O is then
reversed by means of a lever or other arrangement and the opposite action takes place
namely Steam descends through the Piston rod J thus accelerating the speed of the
monkey in its descent and giving a more effective blow. The exhaust ascends
through the Piston rod I and into the atmosphere at N.
When the Pile driver is required as single acting I detach the front part of the
plug which regulates the passage of Steam through the Piston rod J and allow the
lifting Piston rod I to be worked by the handle on the Plug O.

page_text: Having now described and ascertained my invention and the manner in which it is
to be performed I wish it to be particularly understood that I do not bind myself to
the exact details shown and described but I do declare that what I claim is
1st. A double action Steam Pile driver with 2 tubular piston rods as shown and
described.
2nd. The combination in one Piston Rod having 2 or more holes drilled through
it so as to effect the same object as before described.
3rd. The 3 way cock or valve having the plug in 2 pieces and having one part
arranged so that it can be readily detached from the other and thus make the Pile
Driver single acting.
4th. The arrangement as before described and applied to hydraulic pressure in any
manner.
Dated this Eighth day of October 1887.
JAMES GARVIE, JUNR.