AN IMPROVED CONSTRUCTION OF LIFTING JACK
Year: 1854

page_text: LETTERS PATENT to John Johnson Peile, of Whitehaven, in the County
of Cumberland, Iron Merchant, for the Invention of "AN IMPROVED
CONSTRUCTION OF LIFTING JACK."
Sealed the 20th June 1854, and dated the 11th April 1854.
PROVISIONAL SPECIFICATION left by the said John Johnson Peile at the
Office of the Commissioners of Patents, with his Petition, on the 11th
April 1854.
I, JOHN JOHNSON PEILE, of Whitehaven, in the County of Cumberland,
Iron Merchant, do hereby declare the nature of the said Invention for "AN
IMPROVED CONSTRUCTION OF LIFTING JACK" to be as follows:-
The chief object of this Invention is to staple timber in the holds of
vessels. For this purpose, two of the improved jacks are employed, one at
each end of the log to be raised. This improved jack consists of a vertical
bar, provided with ratchet teeth on opposite sides; over this bar, which is
grooved at its edges, slides a frame, which carries at its lower end a shoe for
inserting below the log to be lifted; jointed to this frame is a rocking frame,
which embraces the vertical bar, and carries two clicks or catches, which take
into the ratchet teeth of the vertical bar; the rocking frame is provided at
one side with lugs, into which the end of a crow bar is inserted, for the purpose
of actuating the rocking frame; as this frame is rocked, the clicks will be
alternately lifted, the one rising while the other forms a fulcrum for the
upward movement of the frame; by this means the two frames will be
lifted, and with them the log which bears upon the shoe of the sliding
frame.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Johnson Peile in the Great Seal Patent Office on the
11th October 1854.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
JOHNSON PEILE, of Whitehaven, in the County of Cumberland, Iron Merchant,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Eleventh day of April, in the year of our Lord One
thousand eight hundred and fifty-four, in the seventeenth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
John Johnson Peile, Her special license, that I, the said John Johnson Peile,
my executors, administrators, and assigns, or such others as I, the said John
Johnson Peile, 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 "AN IMPROVED CONSTRUCTION OF
LIFTING JACK," upon the condition (amongst others) that I, the said John
Johnson Peile, by an instrument in writing under my hand and seal, 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 imme-
diately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said John Johnson Peile, 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, reference being had to the Drawing hereunto annexed, and to the
letters and figures marked thereon (that is to say):
The chief object of this Invention is to staple timber in the holds of vessels,
and for this purpose I employ two jacks of the improved construction, to be
presently described, one being applied to each end of the log to be raised, and
the two jacks being operated simultaneously.
In the accompanying Drawing, Fig. 1 represents in front view, and Fig. 2,
in side view, my improved lifting jack. A is a vertical bar, made of malleable,
cast, or wrought iron, and provided with broad ratchet teeth a, a, on opposite
sides, which teeth have their horizontal faces uppermost. Over this bar A,
which is grooved at its edges, slides a frame B, which carries at its lower
end a shoe C, for inserting below the log to be lifted, and forming a rest or

page_text: support thereto. Jointed to this frame at about the middle of its length is
a rocking frame D, which rocks on stud pins E, and embraces the vertical
bar A. This frame D carries two clicks or catches F, F, which take
respectively into the ratchet teeth on the opposite sides of the vertical bar
A, and are held in contact with that bar by means of their weighted arms
G, G. The rocking frame D is provided at one side with lugs E, to receive
the end of a crow bar or lever I, for the purpose of actuating the rocking
frame. As this frame is rocked, the clicks F will be alternately lifted, the
one rising to the next tooth in the rack, with which it is in contact, while the
other forms a fulcrum for the upward movement of the frame.
By this
means, the frame B will be caused to slide up the bar A, and two jacks of
this construction being applied to opposite ends of the log to be raised, and
operated simultaneously, the log which bears upon the shoes or supports C
of the sliding frames of the jacks will be readily lifted. When the log has
been raised to the required height, it is slidden off its supports C on to the
pile of timber, and the sliding frame of each jack is then lowered to take up
another log. The lowering of the sliding frame is effected by pressing the
weighted ends of the clicks inwards, whereby the clicks will be disengaged
from the ratchet teeth, and the frame will slide down by its own weight.
Having now set forth the nature of my Invention of "An Improved Con-
struction of Lifting Jack," and explained the manner of carrying the same
into effect, I wish it to be understood that under the above in part recited
Letters Patent I claim, the arrangement of mechanical parts as herein
described, or any mere modification thereof, constituting my improved
lifting jack.
In witness whereof, I, the said John Johnson Peile, have hereunto set
my hand and seal, this Eleventh day of October, in the year of our
Lord One thousand eight hundred and fifty-four.
o Witness,
J: W. MOFFATT,
66, Chancery Lane.
JOHN JOHNSON PEILE. (L.S.)