IMPROVEMENTS IN ARRANGEMENTS AND MECHANISM FOR PREVENTING OR PROVIDING AGAINST ACCIDENTS IN WINDING OR HOISTING MACHINERY USED FOR MINES AND OTHER PURPOSES
Year: 1870

page_text: LETTERS PATENT to William Barrow Turner, of Ulverstone, in the
.: County of Lancaster, Civil and Mining Engineer, George Grey, of
Moor Row, in the County of Cumberland, Mine Manager, and
Robert Brydon, of Whitehaven, in the County of Cumberland,
Mechanical Engineer, for the Invention of "IMPROVEMENTS IN
ARRANGEMENTS AND MECHANISM FOR PREVENTING OR PROVIDING AGAINST
ACCIDENTS IN WINDING OR HOISTING MACHINERY USED FOR MINES AND OTHER
PURPOSES."
Sealed the 22nd December 1870, and dated the 10th September 1870.
PROVISIONAL SPECIFICATION left by the said William Barrow Turner,
George Grey, and Robert Brydon, at the Office of the Com-
missioners of Patents, with their Petition, on the 10th September
1870.
5 We, WILLIAM BARROW TURNER, of Ulverstone, in the County of
Lancaster, Civil and Mining Engineer, GEORGE GREY, of Moor Row,
in the County of Cumberland, Mine Manager, and ROBERT BRYDON,
of Whitehaven, in the County of Cumberland, Mechanical Engineer, do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN

page_text: ARRANGEMENTS AND MECHANISM FOR PREVENTING OR PROVIDING AGAINST ACCIDENTS
IN WINDING OR HOISTING MACHINERY USED FOR MINES AND OTHER PURPOSES," to
be as follows:-
winding rope is attached.
Our Invention relates to means by which the shocks and excessive
strains tending to break the winding rope are modified and reduced,
and to means by which the cage or hoist box will be arrested in its
descent in case the rope should break or become disconnected, and
also to means for disconnecting the rope from the cage in the event
of overwinding, and our Invention consists of improved combinations
and arrangements of mechanism for the above purposes, namely,
two boxes containing springs of india-rubber or steel are secured one
on each side of the cage or hoist box, and the spindles of the two
_spring_boxes_are_connected_together_by_a_cross_head_to_which_the_|
The cross head is also connected by links
with arms on two cross shafts having bearings in the cage or hoist
box, and there is a pawl at each end of the two cross shafts which
are brought into ratchet teeth formed in plates secured to the outside
of each guide rod for the cage when the springs expand sufficiently
owing to the breakage or disconnection of the rope. The eye or link
to which the winding rope is connected is formed to open by causing
one part to turn on a joint pin, this moveable part being kept in
position by a spring, but in case of overwinding a projection from
the moveable part of the link will come against a stop, which will
cause the eye or link to turn on its joint and open and disconnect
the rope.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Barrow Turner, George Grey, and
Robert Brydon in the Great Seal Patent Office on the 8th March
1871.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, WILLIAM 3
BARROW TURNER, of Ulverstone, in the County of Lancaster, Civil and
Mining Engineer, GEORGE GREY, of Moor Row, in the County of
Cumberland, Mine Manager, and ROBERT BRYDON, of Whitehaven, in
the County of Cumberland, Mechanical Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her 3
Letters Patent, bearing date the Tenth day of September, in the year

page_text: of our Lord One thousand eight hundred and seventy, in the thirty-
fourth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto us, the said William Barrow Turner, George Grey, and
Robert Brydon, Her special license that we, the said William Barrow
Turner, George Grey, and Robert Brydon, our executors, administrators,
and assigns, or such others as we, the said William Barrow Turner,
George Grey, and Robert Brydon, our executors, administrators, and
assigns, should at any time agree with, and no others, from time to
time and at all times thereafter during the term therein expressed,
should and lawfully might make, use, exercise, and vend, within the
United Kingdom of Great Britain and Ireland, the Channel Islands,
and Isle of Man, an Invention for "IMPROVEMENTS IN ARRANGEMENTS AND
MECHANISM FOR PREVENTING OR PROVIDING AGAINST ACCIDENTS IN WINDING OR
HOISTING MACHINERY USED FOR MINES AND OTHER PURPOSES," upon the con-
dition (amongst others) that we, the said William Barrow Turner,
George Grey, and Robert Brydon, by an instrument in writing under
our hands and seals, or under the hand and seal of one of us, should
particularly describe and ascertain the nature of the said Invention, and
in what manner the same was to be performed, and cause the same to
be filed in the Great Seal Patent Office within six calendar months next
and immediately after the date of the said Letters Patent.
NOW KNOW YE, that we, the said William Barrow Turner, George
Grey, and Robert Brydon, do hereby declare the nature of the said
Invention, and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement
and the accompanying Drawings (that is to say) :-
Our Invention relates to means by which the shocks and excessive
strains tending to break the winding rope are modified and reduced,
and to means by which the cage or hoist box will be arrested in its
descent in case the rope should break or become disconnected, and
also to means for disconnecting the rope from the cage in the event
of overwinding, and our Invention consists in improved combinations
and arrangements of mechanism for the above-mentioned purposes,
namely, two boxes containing springs of india-rubber or steel are
secured one on each side of the cage or hoist box, and the spindles
of the two springs are connected together by a cross head, to which
the winding rope or chain is attached. The cross head is also con-
nected by two links with arms on two cross shafts having bearings

page_text: in the cage or hoist box, and there is a pawl at each end of the two
cross shafts which are brought into ratchet teeth formed in plates
extending the entire length, and secured to the outside of each guide
for the cage when the springs expand sufficiently owing to the breakage
or disconnection of the winding rope or chain.
According to another modification of our Invention one spring box
only is used in a central position, and its spindle is connected with
arms on cross shafts, the ends of which carry the pawls which are to
enter the ratchet toothed plates, which plates in both modifications
may be dispensed with if the ends of the pawls are made sharp and
arranged to bite against the sides of the wood guides when the spring
guide rods and prevent them from twisting. The eye or link to which the
winding rope or chain is connected is formed to open by causing one
part of it to turn on a joint or pin, this moveable part being kept
in position by a spring, but in case of overwinding a projection from
the moveable part of the link will come against a stop, which will
'cause the eye or link to turn on its joint and open and disconnect
the rope.
Fig. 1 is a front elevation, and Fig. 2 a cross sectional elevation
illustrating one modification of our Invention, with two spring boxes
and the plates with ratchet teeth secured to the guide rods; Fig. 3 is a
detached section of the spring box; Fig. 4 is a front elevation, and
Fig. 5 is a cross sectional elevation illustrating the other modification of
our Invention, where only one spring box is used and the ratchet toothed
plates are dispensed with.
The winding rope or chain (a) has an eye or link at its end, which
is connected with a hook or opening eye a, the hook part being jointed
upon a pin (a), but it is held in the position in which it is shown
in the Drawings by a spring (a²) acting against one face. This hook
part has a projection (a³) from it, which comes against a stop and opens
the eye and releases the rope in the case of overwinding.
In the modification shown by Figs. 1 and 2, the lower part (a*) of
the eye is secured to the cross bar b, which is connected with the
spindles (c) of the two spring boxes c', which are formed as illustrated
by a series of rings of india-rubber having iron washers between them,
the lower end of the spindle having a plate c³ secured to it as shewn.

page_text: The spring boxes are secured to the sides of the cage or hoist d, and
thus the weight of the cage and its load rests upon the springs, which act
as a buffer against the sudden jerks and as a cushion when the cage is
lowered upon the stops at the top or bottom of the pit. Rods (e) are
jointed at each end of the cross bar (b), which connect it with arms (f)
on two shafts (g) having bearings in the cage, and the ends of these
shafts have pawls (h) secured upon them, which will in an instant be
brought simultaneously into the teeth of the ratchet plates (k) secured
outside the guide rods (1) by the expansion of the springs when the rope
or chain breaks or becomes disconnected.
In the modification of our Invention illustrated by Figs. 4 and 5
the disengaging hook or eye (a) is connected directly with the end of the
spindle (c) of the spring box (c'), which is attached to the cross frame
of the cage (d), and the lower end of the spring spindle (c) is connected
by two rods (e) with arms (ƒ) on the two cross shafts (g), which have
chisel-pointed pawls on their ends that will sink in the wood of the guide
rods when the spring expands as it is supposed to have done, as shown
in Figs. 4 and 5.
We have now particularly described the nature of our Invention,
and the modes of carrying it into effect, and claim as our Invention
the combinations and arrangements of mechanism for the purposes herein
set forth, substantially as described and illustrated by the Drawings.
In witness whereof, I, the said William Barrow Turner, on my own
behalf and on behalf of the said George Grey and Robert Brydon,
have hereunto set my hand and seal, this Seventh day of March,
in the year of our Lord One thousand eight hundred and
seventy-one.