IMPROVEMENTS IN HOISTS FOR RAISING AND LOWERING WEIGHTS
Year: 1859

page_text: LETTERS PATENT to John Jackson, of Worsley, in the County of Lan-
caster, Joiner, and Joseph Thorley, of the same Place, Overlooker, for
the Invention of "IMPROVEMENTS IN HOISTS FOR RAISING AND LOWERING
WEIGHTS."
Sealed the 14th February 1860, and dated the 19th August 1859.
PROVISIONAL SPECIFICATION left by the said John Jackson and Joseph
Thorley at the Office of the Commissioners of Patents, with their
Petition, on the 19th August 1859.
WC, JOHN JACKSON, of Worsley, in the County of Lancaster, Joiner, and
JOSEPH THORLEY, of the same Place, Overlooker, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN HOISTS FOR RAISING AND
LOWERING WEIGHTS," to be as follows:-
Our Invention has for its object the prevention of accidents from the
breaking of the rope or chain by which the "cage" or other such arrangement
is held. For this purpose we employ inclined planes, which cause rollers or
other apparatus to act as a lock upon the cage. The following arrangement
will illustrate this:-To the rope are connected by means of levers two rollers
on either side of the cage, and between which are situated fixed rails; these
rollers are kept back from the rails by the tension of the rope, but should
it break, they turn into contact therewith and become wedged thereto by
inclined planes attached to the cage.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Jackson and Joseph Thorley in the Great Scal
Patent Office on the 18th February 1860.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JOHN
JACKSON, of Worsley, in the County of Lancaster, Joiner, and JOSEPH
THORLEY, of the same Place, Overlooker, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing late the Nineteenth day of August, in the year of our Lord
One thousand eight hundred and fifty-nine, in the twenty-third year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto us,
the said John Jackson and Joseph Thorley, Her special license that we, the
said John Jackson and Joseph Thorley, our executors, administrators, and
assigns; or such others as we, the said John Jackson and Joseph Thorley,
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, excercise, and
vend, within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man,) an Invention for "IMPROVEMENTS IN HOISTS FOR
RAISING AND LOWERING WEIGHTS," upon the condition, amongst others, that
we, the said John Jackson and Joseph Thorley, or one of us, by an instru-
ment 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 I, the said Joseph Thorley, do hereby declare the
nature of our said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement and accompanying Drawing, that is to say :-
Our Invention relates to a method of preventing the hoist from falling,
should the rope or other apparatus by which it is suspended become broken.
Fig. 1 is a side elevation of a hoist, constructed according to our improve-
ments, and Fig. 2 is a plan or horizontal view in section taken about the
line A, B, of Fig. 1. The framework of the hoist is shewn at a, and the rods
by which it is suspended at b; these rods at each side of the hoist are con-
nected together by cross rods c, and they carry at their lower ends bars f,
situate within slots formed by the framework a and pieces 9 attached to or
formed thereon. When the hoist is suspended, the ends of the slots rest upon

page_text: the bars f, which therefore carry the weight; jointed to the bars fare rods h,
which at their lower ends are connected to levers i, capable of turning upon
centres j. The other ends of these levers are provided with arms k, on which
are mounted rollers 7, running in contact with inclined planes m, fixed to
the framework a. These rollers are kept in contact with the inclined planes
by means of pins fixed to the arms k, and projecting into grooves formed in
the metal of the inclines; between the rollers are rails n, extending the
whole length of the distance through which the hoist is designed to travel.
The position of the parts in the Drawing is that which they will assume when
a weight is being raised, the bars f being in contact with the tops of the slots
at g, by which contact the hoist is suspended, and the rollers are sufficiently
down their inclined planes to be free from the rails n. Supposing that when
the parts are in this position the rope should break, or the hoist from other
cause be at liberty to fall, then the rods b and bars f not being held up, will
drop, and cause the levers i to turn upon their centres j, by which means the
rollers will be carried up the inclines m, and will by them be forced out-
ward, so as to arrive in contact with the rails n, and then the weight of the
hoist itself and its load will impart to them a tendency to rise still more, and
thereby effect a complete locking of the whole together; upon the rods b,
however, being drawn upward again, the rollers will be liberated from the
rails n, so as to permit the hoist to be raised. At o are springs, one end of
each of which is fixed to the framework, and the other bears against a lover i;
these springs are for the purpose of giving an immediate start to the rollers ?,
so as to gain their action as quickly as possible.
Having thus described and ascertained the nature of our said Invention, and
the manner of carrying the same into effect, I desire it to be understood
that we do not limit ourselves to the exact arrangement of parts shewn; but
that which we claim, as secured to us under the above in part recited Letters
Patent is, the use of the rollers in combination with inclined planes for
the purpose above set forth.
In witness whereof, I, the said Joseph Thorley, have hereunto set my
hand and seal, this Seventeenth day of February, in the year of our
Lord One thousand eight hundred and sixty.
JOSEPHI THORLEY. (L.s.)