IMPROVE MENTS IN LIFTING JACKS
Year: 1864

page_text: LETTERS PATENT to Augustus Bryant Childs, of No. 481, Oxford Street,
in the County of Middlesex, Engineer, for the Invention of "IMPROVE
MENTS IN LIFTING JACKS."-A communication from abroad by Lemuel
Dow Owen, of Chicago, in the State of Illinois, in the United States of
America.
Sealed the 29th July 1864, and dated thé 2nd. February 1864.
PROVISIONAL SPECIFICATION left by the said Augustus Bryant Childs
at the Office of the Commissioners of Patents, with his Petition, on the
2nd February 1864.
I, AUGUSTUS BRYANT CHILDS, of No. 481, Oxford Street, in the County of
Middlesex, Engineer, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN LIFTING JACKS," to be as follows:-
I have a hollow pillar on a plate or stand, and with a slot or opening on
one side extending nearly from the top to the bottom, and I introduce a loose
toothed bar or rack into such pillar, so that the teeth may be in the slot ;
near to the top of the pillar, and on the same side as the slot, I have a forked
bracket, one side or fork being on one side of the slot, and the other on the
other side, and such bracket has two sockets, one being immediately behind
the other, and I have a loose lever arm with a centre or axis to work in one
or other of the sockets, and at the end of such lever arm I have a toothed
segment to gear into the teeth of the bar or rack; the back of the socket
next to the pillar is bevelled off so as to allow the centre of the lever to slide

page_text: from it into the next socket as required. I have another bracket below.the
lever bracket to work a ratchet, so that as the toothed bar is raised by the
depression of the lever, and the gearing of the segmental teeth into those of
the bar, the ratchet maintains the bar at the height to which it has been
raised. When it is desired to lower the bar, the ratchet is lifted and the
toothed bar falls to its normal position.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Augustus Bryant Childs in the Great Seal Patent Office on
the 2nd August 1864.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, AUGUSTUS
BRYANT CHILDS, of No. 481, Oxford Street, in the County of Middlesex,
Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Second day of February, in the year of our Lord
One thousand eight hundred and sixty-four, in the twenty-seventh year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Augustus Bryant Childs, Her special licence that I, the said Augustus
Bryant Childs, my executors, administrators, and assigns, or such others as
I, the said Augustus Bryant Childs, 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, excrcise, and vend, within the United Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention for "IMPROVE-
MENTS IN LIFTING JACKS," a communication to me from abroad by Lemuel
Dow Owen, of Chicago, in the State of Illinois, in the United States of
America, upon the condition (amongst others) that I, the said Augustus
Bryant Childs, 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
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 Augustus Bryant Childs, do hereby
declare the nature of my said Invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and by the
following statement thereof, and by reference to the Sheet of Drawings, and
to the letters and figures marked thereon:—

page_text: I have a hollow pillar C on a plate or stand P, and with a slot or opening
on one side extending nearly from the top to the bottom, and I introduce a
loose toothed bar or rack D into such pillar, so that the teeth may be in the
slot; near to the top of the pillar, and on the same side as the slot, I have a
forked bracket g, one side or fork being on one side of the slot, and the other
on the other side, and such bracket has two sockets K, K', one being
immediately behind the other, and I have a loose lever arm F with a centre
or axis J to work in one or other of the sockets, and at the end of such lever
arm I have a toothed segment M to gear into the teeth of the bar or rack.
The back of the socket next to the pillar is bevelled off so as to allow the
centre or axis of the lever to slide from it into the next socket as required.
I have another bracket N below the lever bracket to work a ratchet h, with
or without a spring, so that as the toothed bar is raised by the depression of
the lever and the gearing of the segmental teeth into those of the bar, the
ratchet maintains the bar at the height to which it has been raised; when it
is desired to lower the bar the ratchet is lifted and the toothed bar falls to
its normal position.
Having described the nature of the said Invention, and in what manner
the same is to be performed, I wish it to be understood that I do not claim
any of the parts taken separately; but what I claim as my Invention is the
combination and arrangement of parts to form a lifting jack, as herein-before
mentioned and described.
In witness whereof, I, the said Augustus Bryant Childs, have hereunto
set my hand and seal, this, Second day of August, in the year of our
Lord One thousand eight hundred and sixty-four.