Year: 1887

page_text: 1887
Date of Application, 15th Apr..
Complete Left, 6th Jan., 1888
Complete Accepted, 10th Feb., 1888
I, WILLIAM ROBERT GREEN of the Newington Iron Works Falmouth Road London
S.E. Engineer do hereby declare the nature of this invention to be as follows:-
My invention relates to hydraulic lifts of the class called suspended in which the
cage is lifted by one or more chains or ropes receiving motion from the lifting ram
and has for its object improvements in the method of communicating the motion of
the lifting ram to the lifting chains or ropes and in the method of guiding the ram.
In the hydraulic suspended lifts as generally constructed the sheaves forming the
multiplying power are carried by a crosshead fixed to the ram and the ram guided
by suitable guides attached either wholly or partially to foundations prepared for
them.
In the apparatus of my invention the cylinder is inverted so that the ram works
downwards. To the end of the ram are attached two or more vertical rods which pass
through guides attached to or forming part of the cylinder. These rods are continued
upwards and attached above the cylinder to a crosshead carrying the sheaves necessary
for the multiplying power. By this arrangement the usual heavy cast iron crosshead
attached to the ram is dispensed with and a simpler form of crosshead used which
will readily admit sheaves of large diameter and also the extra foundations for the
guides are dispensed with as the guides are carried entirely by the cylinder.
Dated thin 15th day of Annil 1887

page_text: I, WILLIAM ROBERT GREEN of the Newington Iron Works Falmouth Road London
S.E. 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 relates to hydraulic lifts of the class called suspended in which the
cage is lifted by one or more chains or ropes receiving motion from the lifting ram
and has for its object improvements in the method of communicating the motion
of the lifting ram to the lifting chains or ropes and in the method of guiding
the ram.
In the hydraulic suspended lifts as generally constructed the sheaves forming
the multiplying power are carried by a crosshead fixed to the ram and the ram
guided by suitable guides attached either wholly or partially to foundations prepared
for them.
In the apparatus of my invention the cylinder is inverted so that the ram works
downwards. To the end of the ram are attached two or more vertical rods which
pass through guides attached to or forming part of the cylinder. These rods are
continued upwards and attached above the cylinder to a crosshead carrying the sheaves
necessary for the multiplying power. By this arrangement the usual heavy cast iron
crosshead attached to the ram is dispensed with and a simpler form of crosshead used
which will readily admit sheaves of large diameter and also the extra foundations for
the guides are dispensed with as the guides are carried entirely by the cylinder.
In the accompanying drawing I have shewn my apparatus in the form in which I
preferably construct it.
A is the inverted hydraulic cylinder with inlet and outlet pipe a and ram B working
downwards through gland b.
C is the crosshead keyed to ram at c and to side rods at d¹.
The side rods D pass
through lugs a¹ a² on lifting cylinder by which they are guided and are each made in
two pieces united by the coupling E. The upper ends are formed to receive the pin f*
upon which run loosely the multiplying sheaves F carrying the ropes ƒ¹ƒ² ƒ³ ƒª.
When the pressure water is admitted to the cylinder it pushes out the ram thus
drawing down the side rods which pull the multiplying sheaves downwards and so lift
the cage.
When the water is allowed to escape from the cylinder the weight of cage acting
through the ropes and multiplying sheaves pulls back the ram.
The weight of ram side rods and multiplying sheaves are utilised to balance
the cage and additional weight is applied where necessary either to cage or ram cross-
head so as to leave the cage only the small preponderance of weight necessary to enable
it to descend at the necessary speed.
In the accompanying drawing and foregoing description I have set forth my

page_text: invention in the manner in which I preferably construct it i.e. with two side rods each
in two pieces united by a coupling which also serves as a stop by coming into
contact with the lugs on cylinder at each end of the stroke, but in some cases I
dispense with the coupling and make each side rod in one piece and provide stop
pieces which come into contact with the outer ends of lugs on cylinder. In some
cases I employ three or more side rods in place of the two.
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 :-
1. In hydraulic suspended lifts with inverted cylinders, the employment of two or more
side rods to convey the motion of ram to the multiplying sheaves, these side rods
passing through lugs either attached to or forming part of the lifting cylinder and
serving to guide the ram and sheaves and forming permanent stops when desired.
Dated this 6th day of January 1888.
WILLM. ROBT. GREEN.