IMPROVEMENTS IN HANGING LIFTS OR Hoists
Year: 1879

page_text: LETTERS PATENT to Myles Kennedy, of Ulverston, in the County of Lancaster,
Engineer, for the Invention of "IMPROVEMENTS IN HANGING LIFTS OR
Hoists."
Sealed the 11th May 1880, and dated the 28th November 1879.
PROVISIONAL SPECIFICATION left by the said Myles Kennedy at the Office
of the Commissioners of Patents on the 28th November 1879.
MYLES KENNEDY, of Ulverston, in the County of Lancaster, Engineer.
"IMPROVEMENTS IN HANGING LIFTS OR HOISTS."
The object of this Invention is to provide a simple and at the same time an
efficient lift or hoist for raising and lowering weights a short distance, and it is
particularly applicable in such places as stables, coach houses, breweries, and other
buildings or places where the apparatus is capable of being suspended from and
supported from the girders, floor, beam, or other support.
According to my Invention I provide a cylinder suspended from the roof or from
a beam by iron rods, and bored to receive an inner cylinder or ram, and having a
leather ring in a groove, or metal ring for steam; or cupped leather washer may be
screwed on the end of inside cylinder to keep water or steam tight.
Two collars or cotters are fixed on the hanging rods to prevent the inside
cylinder from lifting out. I next provide a timber or other cross head having
chains or rods to attach to the weight to be lifted, or otherwise. I have a small
piston rod and stuffing box through the bottom of the outside cylinder with cross-
head to attach chains, rope, rods, or equivalent appliances for lifting; either of the
above methods may be used, as found most convenient.
When water is the power used the pressure and waste taps are set opposite each
other with box lever key to turn both taps by one movement, the one tap being
set to open, the other shut.
The cylinders may be hung overhead to a four or two wheel carriage on rails or
bars, or attached to the radiating arm of crane, so that the weight may be moved
about as in breweries, workshops, and other places with rubber hose pipe attached
to allow the weight to be moved.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Myles Kennedy in the Great Seal Patent Office on the 28th May
1880.
MYLES KENNEDY, of Ulverston, in the County of Lancaster, Engineer.
"IMPROVEMENTS IN HANGING LIFTS OR HOISTS."
The object of this Invention is to provide a simple and at same time an efficient
lift or hoist for raising and lowering weights a short distance, and it is particularly
applicable in such places as stables, coach houses, breweries, foundries, and other
buildings or places where the apparatus is capable of being suspended from and
supported from the girders, floor, beam, or other support.
According to my Invention I provide a cylinder suspended from the roof or from
a beam by iron rods, and bored to receive an inner cylinder or ram, and having a
leather ring in a groove, or metal ring for steam; or a cupped leather washer may
be screwed on the end of inside cylinder to keep water or steam tight.
Two collars or cotters are fixed on the hanging rods to prevent the inside
cylinder from lifting out. I next provide a timber or other cross head having
chains or rods to attach to the weight to be lifted, or otherwise. I have a small
piston rod and stuffing box through the bottom of the outside cylinder with cross-
head to attach chains, rope, rods, or equivalent appliances for lifting; either of the
above methods may be used, as found most convenient. When water is the power
used the pressure and waste taps are set opposite each other with box-lever key
to turn both taps by one movement, the one tap being set to open, the other.
shut.
The cylinders may be hung overhead to a four or two wheel carriage on rails or
bars, or attached to the arm of crane, so that the weight may be moved about, as,
in breweries, workshops, and other places with rubber hose pipe attached to allow
the weight to be moved.
And in order that this my Invention may be more fully understood, I will now'
proceed to describe the Figures on the accompanying Drawings, which illustrate
some modes of carrying it into effect.
Figure 1 represents a hydraulic lift as applied to and suspended from an upper
cross beam A of a roof; this beam is here shown resting on two purlins B, but
may be suspended in any other suitable manner; Figure 2 is a side view of the
lift; Figure 3 is a separate view of the lift proper.
C is the cylinder, which by the two rods D, D, fastened to strong lugs c, c, or
flange formed thereon is suspended from the beam A. The cylinder C is bored
out, and in it works a ram E formed with piston cup, leather washer e screwed on
below. The ram E is cast hollow, and is formed with lugs e¹, e', or flange at the
top for bolting it to the wooden cross head F. The lugs e¹, e', have also holes
through for the suspending rods D, which serve as guide bars, and have collars d
fastened with set screws to form stops, 'so as to limit the stroke of the ram E-and
prevent it from being pushed quite out of the cylinder A when fluid pressure is
being applied. In Figure 4 is shown a cylinder C with its ram run out in order
to shew the length of stroke.
To the eyebolts f on the cross head F are connected chains with hooks for lifting.
G is the pipe for supplying fluid pressure to the pipe G¹ (which is connected to the
cylinder C) when the tap g is open. H is a waste pipe, and a tap for putting
same in communication with the pipe G. The taps g and h have their plugs
connected to the same box spanner and lever I, and have their passages so arranged
relatively that when one tap is open the other is shut; thus, for instance, when
the tap g is open the tap is closed, and fluid pressure is admitted from the pipe
G to the pipe G¹ and the cylinder C, whereby the piston ram E is raised together
with any load that may be hung from the cross head F. When the lever I is

page_text: turned the other way against a suitable stop the tap g is closed, while the tap h is
open, allowing the fluid pressure in the cylinder C and pipe G¹ to escape, so that
the piston ram E with crosshead F and load suspended therefrom are made to
descend. The quicker the tap h is opened the quicker will be the descent of the
load. Instead of ordinary plug taps valves may be used, both operated by the
same lever on a common valve stem by a movement of the latter in the direction
of its axis; or by a screw arrangement the valves may be moved as required by
twisting the valve stem; indeed, many modes may suggest themselves, but the
essential thing is that by one movement one valve or tap be closed and the other
opened.
In Figure 5 I have shown how my Invention may be applied to an ordinary
traveller crane, the cylinder C being suspended from the framing A of a trolly
running on rails in the ordinary manner. The trolly may be moved along the
rails in any ordinary well known manner. The fluid pressure is supplied by a
strong india rubbor or other flexible hose G' (or it might be a jointed metallic"
pipe).
Figure 6 shows the mode in which my Invention may be applied to the radiating
arın or jib of an ordinary swing crane, the cylinder C being suspended from a
trolly A. The pipe for supplying fluid pressure to the flexible pipe G' may be
placed in the same axis as that of the upright post K.
When steam or other fluid pressure other than wator is used the ram or piston
with its packing will, in some cases, have to be adapted thereto, as is well under-
stood;
thus in some cases a piston with piston rod may be used instead of a ram
with cup leather, as here described.
And having thus described and ascertained the nature of this Invention, and
how the same may be carried into effect, I declare that I claim,―
Firstly. A suspended cylinder with piston rain or rod connected to a crosshead,
to which a load to be lifted is attached, the load being lifted by hydraulic or other
fluid pressure applied between the cylinder bottom and ram or piston, substantially
as described.
Secondly. The arrangement of taps or valves for inlet and outlet of the fluid
pressure, so that by one movement one is opened while the other is shut, substan-
tially as and for the purpose described.
Thirdly. The application of the lifting cylinders herein described and shewn to
swing cranes and other cranes.
In witness whereof, I, the said Myles Kennedy, have hereunto set my hand
and seal, this Twentieth day of May, in the year of our Lord One thousand
eight hundred and eighty.
MYLES KENNEDY. (L.S.)