IMPROVEMENTS IN APPARATUS TO BE APPLIED TO WINDING MACHINERY (USED IN COAL AND OTHER MINES) FOR THE PREVENTION OF ACCIDENTS FROM OVERWINDING, WHICH APPARATUS IS
Year: 1875

page_text: LETTERS PATENT to Edward Ormerod, of Atherton, in the County of
Lancaster, for the Invention of "IMPROVEMENTS IN APPARATUS TO BE
APPLIED TO WINDING MACHINERY (USED IN COAL AND OTHER MINES) FOR
THE PREVENTION OF ACCIDENTS FROM OVERWINDING, WHICH APPARATUS IS
PROVISIONAL SPECIFICATION left by the said Edward Ormerod at
the Office of the Commissioners of Patents, with his Petition, on
the 6th July 1875.
I, EDWARD ORMEROD, of Atherton, in the County of Lancaster, do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN
APPARATUS TO BE APPLIED TO WINDING MACHINERY (USED IN COAL AND OTHER
MINES) FOR THE PREVENTION OF ACCIDENTS FROM OVERWINDING, WHICH APPARATUS
IS ALSO APPLICABLE TO HOISTS AND FOR OTHER SIMILAR PURPOSES," to be as
follows:-
This Invention relates to improvements upon the subject matter of
former Letters Patent granted to me bearing date the Fifteenth day of

page_text: August A.D. 1867, and numbered 2350, and consists of certain
alterations in the form of the central or intermediate plate or link of the
shackle, whereby the engineer or other person can (after an overwinding
has taken place), readjust the link or shackle without difficulty or
danger to himself.
Instead of making the central hole (through which the central pin or
fulcrum of the plates or links passes) circular, I make it in the form of
a perpendicular slot and above the soft metal pin I have a curved
horizontal slot, through which passes a steady pin or bolt, passing also
through holes in the outer plates; and at the upper end of the central
plate I form a leg or projection having a hole therein.
When an overwinding has taken place and the catches are thrown out
all that the engineer has to do is to withdraw the steady pin or bolt, and
then to catch hold of the leg or projection by means of a hook or
otherwise and draw up the central or intermediate plate, which will lift
the pin or bolt to which the cage is attached to the top of the vertical
part of the slots near the bottom of the outer plates, and opposite to the
horizontal or curved portion of the said slots, and he can then move the
plates or links into their normal position, and adjust them for work as
before without difficulty.
Another way of effecting the same object is to form inclined slots in
the plates above the central pin and between it and the upper shackle
pin, and to slot the holes slightly (in a curved horizontal direction)
through which the lower shackle pin passes. These slots are inclined
(say) to the left in the two outer plates, and the right in the central
plate, in such a way that when the plates are in their normal position,
the upper ends of the inclined slots coincide so that they form as it were
an inverted V.
When an overwinding has taken place and the upper shackle pin has
been released the catches being at the same time thrown out, the lower
ends of these inclined slots come opposite to cach other in the form of a V
(not reversed). If whilst in this position the upper shackle pin be passed
through the lower part where the slots coincide, and then slightly drawn
up, it will act against the inclined sides of the slots and move the plates
into their original position, withdrawing the catches, so that the cage
can be lowered on to the platform, and the upper shackle pin can then
be removed from the inclined slots and be put into its proper place. If.

page_text: the upper ends of these slots be carried through to the upper shackle
pin hole, the shackle pin would pass into its place at once when raised,
but this would weaken the plates.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Edward Ormerod in the Great Seal Patent Office
on the 4th January 1876.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, EDWARD
ORMEROD, of Atherton, in the County of Lancaster, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Sixth day of July, in the year
of our Lord One thousand eight hundred and seventy-five, in the
thirty-ninth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said Edward Ormerod, Her special
license, that I, the said Edward Ormerod, my executors, administrators,
and assigns, or such others as I, the said Edward Ormerod, my 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 "IMPROVE.
MENTS IN APPARATUS TO BE APPLIED TO WINDING MACHINERY (USED IN COAL AND
OTHER MINES) FOR THE PREVENTION OF ACCIDENTS FROM OVERWINDING, WHICH
APPARATUS IS ALSO APPLICABLE TO HOISTS AND FOR OTHER SIMILAR PURPOSES,"
upon the condition (amongst others) that I, the said Edward Ormerod,
my executors or administrators, by an instrument in writing under
my, or their, or one of their hands and seals, 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 Scal Patent Office within six calendar months next and
immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Edward Ormerod, do hereby
declare the nature of the said Invention, and in what manner tho
same is to be performed, to be particularly described and ascertained
in and by the following statement and accompanying Drawings.

page_text: This Invention relates to improvements upon the subject matter of
former Letters Patent granted to me bearing date the Fifteenth day of
August A.D. 1867, and No. 2350, and consists principally of certain
alterations in the form of the central or intermediate plate or link of the
shackle, whereby the engineer or other person can (after an overwinding 5
has taken place), readjust the link or shackle without difficulty or
danger to himself.
Such being the nature and object of my said Invention, I will now
proceed to describe in detail the manner in which the same is to be or
may be performed or carried into practical effect, and in order that the 1
same may be clearly understood I have hereunto annexed a Sheet of
Drawings illustrative thereof, and have marked the same with figures
and letters of reference corresponding with those in the following
explanation thereof :-
Fig. 1 in the annexed Drawings shows my improved form of central or 1
intermediate plate, and Fig. 2 is a slight modification thercof.
Instead of making the central hole a, a, (through which the central
pin or fulcrum b, b, of the plates or links passes) circular, I make it in
the form of a perpendicular slot (see Fig. 1), and above the soft metal
pin I have a curved horizontal slot c, c, through which passes a steady 2
pin or bolt d, d, passing also through holes in the outer plates; and at
the upper end of the central plate I form a lug or projection e, e, having
a hole therein.
When an overwinding has taken place and the catches are thrown
out, all that the engineer has to do is to withdraw the steady pin or bolt a
d, d, and then to catch hold of the lug or projection e, e, by means of a
hook or otherwise, and draw up the central or intermediate plate which
will lift the pin or bolt f, f, to which the cage is attached to the top of
the vertical part of the slots near the bottom of the outer plates, and
opposite to the horizontal or curved portion of the said slots, and he can
then move the plates or links into their normal position, and adjust
them for work as before without difficulty.
If instead of making the slot a, a, perpendicular I make it slightly
inclined, as shewn in Fig. 2, then the lifting up of the central plate by
means of the lug e, e, will draw the plates inwards and release the
catches, and the cage can be at once lowered on to the platform.

page_text: I..
:
U.
Another way of effecting the same object is shown at Fig. 34, 5;
and 6; Fig. 3 showing the shackle complete; Fig. 4, the centralor
intermediate plate, and Fig. 5, the back plate; Fig. 6, shows the shackle
disconnected and the catches thrown out. In this arrangement the
catches are placed beneath instead of above the central pin. I form
inclined slots g, g, in the plates above the central pin b, b, and between
it and the upper shackle pin, and I slot the holes h, h, slightly (in a
curved horizontal direction) through which the lower shackle pin f,f,
passes. These slots are inclined (say) to tho.left in the two outer plates,
and to the right in the central plate in such a way that when the plates
are in their normal position, the upper ends of the inclined slots coincide
so that they form as it were an inverted V. This form of shackle works
through a plate having a hole through it equal in diameter to the width
of the plates.
When an overwinding has taken place and the upper shackle pin has
been released, the catches being at the same time thrown out, the lower
ends of these inclined slots g, g, come opposite to each other in the form
of a V (not reversed, see Fig. 6). If whilst in this position the upper
shackle pin be passed through the lower part where the slots coincide
and then slightly drawn up, it will act against the inclined sides of the
slots and move the plates into their original position, as as Fig. 3, with-
drawing the catches, so that the cage can be lowered on to the platform,
and the upper shackle pin can then be removed from the inclined slots,
and be put into its proper place. If the upper ends of these slots be
carried through to the upper shackle pin hole, as shown by the dotted
lines in Figs. 4 and 5, the shackle pin would pass into its place at once
when raised, but this would slightly weaken the plates. If preferred the
slots g, g, can be made in a horizontal direction, or holes can be drilled
in the two outer plates, and the centre one only slotted horizontally, in
which cases the plates will have to be adjusted by hand.
Having now described the nature and object of my said Invention
together with the manner in which the same is to be or may be performed
or carried into practical effect, I wish it to be understood. that I claim as
my Invention, the arrangements herein-before described and represented
3.on the Drawings annexed for allowing the engineer or other person
(after an overwinding has taken place) to readjust the link or shackle
without difficulty or danger to himself, or any mere modification or

page_text: imitation thereof, constructed and operating in substantially the same
manner.
In witness whereof, I, the said Edward Ormerod, have hereunto
set my hand and seal, this Third day of January, in the year
of our Lord One thousand eight hundred and seventy-six.
Witnessed by
GEORGE DAVIES, C.E.,
Patent Agent,
Manchester.
EDWARD ORMEROD. (L.B.)