Improvements in Ingot Cranes.
Year: 1889

page_text: Date of Application, 11th July, 1889
Complete Specification Left, 10th Apr., 1890-Accepted, 28th June, 1890
PROVISIONAL SPECIFICATION.
Improvements in Ingot Cranes.
I, WILLIAM SHAPTON of 8 Great George Street in the City of Westminster
Engineer do hereby declare the nature of this Invention to be as follows:-
Ingot cranes at present commonly consist of a horizontal arm or jib fixed to
the top of a ram working in a vertical hydraulic cylinder bolted to the floor.
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In such a construction the ram must be of considerable diameter (otherwise it
would be too weak) and this involves waste of water if a high pressure be used.
The construction also is faulty as it is impossible to properly strut the jib.
According to my Invention I fix the jib to a cylinder which works upon
a vertical ram fixed to the floor. The ram passes through a gland at each
end of the cylinder and is of different diameters at the top and bottom.
I balance the weight of the jib and cylinder by a chain which passes over
a pulley at the head of the ram, its ends being fixed to the jib or cylinder and
which in its course is led around pulleys on a constant pressure cylinder and ram.
Dated this 10th day of July 1880
WM. SHAPTON.
Improvements in Ingot Cranes.
1, WILLIAM SHAPTON of 8 Great George Street, in the City of Westminster,
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 :-
Ingot cranes at present commonly consist of a horizontal arm or jib fixed to the
top of a ram working in a vertical hydraulic cylinder bolted to the floor.
In such a construction the ram must be of considerable diameter (otherwise it
would be too weak) and this involves waste of water if a high pressure be used.
The construction also is faulty as it is impossible to properly strut the jib.
According to my Invention I fix the jib to a cylinder which works upon a vertical
ram fixed to the floor. The ram passes through a gland at each end of the cylinder
and is of different diameters at the top and bottom.
1 balance the weight of the jib and cylinder by a chain which passes over a
pulley at the head of the ram, its ends being fixed to the jib or cylinder and which
in its course is led around pulleys on a constant pressure cylinder and ram.
In order that my said invention may be more fully understood and readily carried
into effect I will proceed to describe the drawings hereunto annexed.
DESCRIPTION OF THE DRAWINGS.
°
Figure 1 is a side elevation and Figure 2 a back elevation partly in section of a
crane constructed according to my invention.
A is the fixed vertical ram which also acts as a column for supporting the apparatus.
B is the hydraulic cylinder working upon the fixed ram and B are glands at each
end of the cylinder. C is the jib and its struts fixed to the cylinder. D is a chain
fixed to the jib, which passes over pulleys D' D' on the cap "D" which is free to
revolve on the top of the ram A to the bydraulic cylinder E fixed to the cylinder B
and jib C. The cylinder E is in constant communication with the water supply

page_text: through the pipe F. GG are two plates connecting the jib C and cap Du so that
they revolve together. The column A has inside it a pipe (not shown in the drawings)
to carry water from the supply to the top of the column where it is connected by a
swivel joint to the descending pipe I upon which slides telescopically the pipe H
carried by the cylinder B. The pipe F branches from the pipe El' and so supplies
the constant pressure cylinder E. Another pipe (not shown in the drawings)
also runs up the inside of the lower portion of the column A and admits water
to the cylinder B. By properly proportioning the diameters of the two portions
of the column A the crane can be worked with water at any pressure without
waste of power.
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. Ingot cranes having a fixed vertical ram and a cylinder carrying the jib and
working upon the fixed ram, substantially as described.
2. Ingot cranes having a fixed vertical ram of two diameters and a cylinder carrying
the jib and working upon the fixed ram, substantially as described.
3. In apparatus such as is referred to in the preceding claims balancing the weight
of the cylinder and jib by a chain passing over pulleys carried by a cap on the head
of the ram to a constant pressure cylinder moving with the beam, substantially as
described.
4. Ingot cranes substantially as described and shown in the drawings.
Dated this 21 do of Anvil 1900