AN IMPROVED LIFTING JACK FOR RAISING. OR REMOVING HEAVY BODIES, WHICH IS ALSO APPLICABLE TO THE PACKING OR COM PRESSING OF GOODS OR OTHER SUBSTANCES
Year: 1840

page_text: at any
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOSEPH
HALEY, of Manchester, in the County of Lancaster, Engineer, send greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Letters Patent, under the Great Seal of Great Britain, bearing date at West-
minster, the Thirty-first day of December, in the fourth year of Her reign, did;
for Herself, Her heirs and successors; give and grant unto me, the said Joseph'
Haley, Her especial licence full power, sole privilege and authority, that I
the said Joseph Haley, my exors, admors, and assigns, and such others as
I, the. said Joseph Haley, my exors, admors, and assigns, should at
time agree with, and no others, from time to time and at all times during
the term. of years therein expressed, should and lawfully might make, use,
exercise, and vend, within England. and Wales, and the Town of Berwick-
upon-Tweed, my Invention of "AN IMPROVED LIFTING JACK FOR RAISING. OR
REMOVING HEAVY BODIES, WHICH IS ALSO APPLICABLE TO THE PACKING OR COM
PRESSING OF GOODS OR OTHER SUBSTANCES;" in which said Letters Patent is
contained a proviso that I, the said Joseph Haley, shall cause a particular
description of the nature of my said Invention, and in what manner the¹i
same is to be performed, to be inrolled in Her Majesty's. High Court of
Chancery within six calendar months next and immediately after the date of
the said in part recited Letters Patent, as in and.by the same, reference being "
thereunto had, will more fully and at large appear.

page_text: NOW KNOW YE, that in compliance with the said proviso, I, the said
Joseph Haley, do hereby declare the nature of my Invention of an improved
lifting jack for raising or removing heavy bodies, which is also applicable to
the packing or compressing of goods or other substances.
The said Invention consists in the construction of a more portable,compact,
and powerful lifting jack, which is also more durable and less liable to be
deranged than those now in use. The manner in which the same is to be
performed or carried into effect is shewn by the annexed Drawing, which I
shall now proceed to describe. The scale to which the Drawing is made is
marked thereon, though it be understood that I do not confine myself to
dimensions or pitch of screw, which must be regulated entirely by the work
to be performed and the amount of manual power to be applied. The letters
of reference herein, having corresponding letters in the Drawing, indicate the
part described in the various figures there represented.
.
Figure 1 is a back view, Figure 2 a side view, and Figure 3 a front view
of my improved lifting jack. The material of which the stock or frame is
formed is hard and well seasoned wood, to which a facing of iron is screwed.
The foot is covered and enclosed by a flanged sole plate, and the top is enclosed
and covered by a turned iron cap, both shewn in Figure 3. In order to
obviate the inconvenience and danger arising from the slipping of the jack at
the foot when lifting or pushing on a hard surface with the jack in a leaning
.position, I have placed in à recess, in the front of the sole plate a steel
plate, the whole width of the jack, as shewn at I, Figures 2 and 3, which is
beviled to a sharp edge and tempered, and can be taken off to be renewed
or sharpened at pleasure. The main lifting screw, together with all the work-
ing parts are of wrought-iron; the latter are case-hardened, and the whole
finished in the most accurate manner.
In the Figures, A represents the handle or winch by which the jack, is
worked, imparting a rotation to the worm shaft B, the pressure from the point
of which is borne in the cup or footsteps of wrought-iron, case-hardened, as
best seen in the section at Figure 5, which shews the interior construction of
the jack.
From the worm shaft B motion is conveyed to the worm or screw
wheel C, which has an internal thread to fit the perpendicular lifting screw D,
and elevates or depresses it according to the direction of rotation of the
handle A. A strong wrought-iron plate H, H, accurately surfaced and case-3
hardened, is placed underneath the wheel C, as shewn in Figure 4, which
bears the entire weight of the lift, and upon which the bos of the wheel C.
revolves. An opening is made in the front of the stock, through which a
strong claw projects, which is forged solid to the screw, as shewn in Figure,

page_text: 2 and 3. In operating with this improved jack, the weight or. body to be
moved may either be supported at the point E, or on the claw F, as may be
most convenient. And I would remark that, in the latter case, the screw D
is kept in a perpendicular position by means of the shoulders or projections
G, G, on the claw F, which press against the iron surface, as seen at Figure 5.
Figure 6 represents another arrangement of the interior construction of my
improved liftingjack, which differs from the former only in the manner of giving
movement to the screw wheel. The rotation is given to the bevil wheel C by
means of a bevil pinion on the shaft B, in lieu of the worm shaft used in the
former arrangement. This modification will not have a power equal to the first
described, but when the lift is not too heavy will work with greater speed.
It will be perceived that my improved lifting jack may be advantageously
adapted to the horizontal slide underneath for the purpose of raising or re-
moving locomotive engines and carriages, and replacing them upon the line
of rails when accidentally thrown off, for which purpose the horizontal slide
in connexion with the common screw jack is now used. By the application
of my improved lifting jack, a more speedy and powerful lift can be obtained,
the handle or winch being in almost all cases in a position easy to work,
whereas the bar or lever used to turn the screw jack, by reason of its length
and the awkward positions in which it frequently has to be applied is liable to
obstruction and delay in performing the work. I would further remark, that
when lifting with my improved jack the handle may be let go, and it will not
run back but remain stationary and safe.
In applying the machinery of the improved jack to the purpose of packing
or compressing of goods or other substances some further apparatus may be
required, but as the construction of such apparatus must depend on the nature
of the goods or substances to be packed or compressed, it is not necessary to
enter into any description here, such apparatus being no part of my Invention,
and well-known to mechanics and persons conversant with such pursuits.
Having now described the nature of my Invention, and the manner in which
the same is to be performed or carried into effect, I wish it to be understood
that I am well aware that a variety of screw jacks have already been con-
structed, and in common use, and that I do not claim the Invention of such,
but I do claim,―
L'
First, the general construction and arrangement of parts, as set forth and
described in the annexed Drawings.
Second, the forging and constructing the claw Fas a solid part of the screw
D, and the guiding the same on the exterior surface of the jack, by which the
main screw D is kept in an accurate perpendicular position when in action,

page_text: And third, the placing of an internal screw wheel' inside of the stock, by
.which it is kept clean and protected from injury; and such being to the best
of my knowledge and belief new, and never before used in that part of Her
Majesty's Dominion called Scotland,. I deliver this as my true and faithful
Specification of the same."
In witness whereof, I, the said Joseph. Haley, have hereunto set my
hand and seal, this Eighteenth day of May, in the year of our Lord
One thousand eight hundred and forty-one.
:
(L.S.) JOSEPH HALEY.
AND BE IT REMEMBERED, that on the Eighteenth day of May, in
'the year of our Lord 1841, the aforesaid Joseph Haley, came before our said
"Lady the Queen in Her Chancery and acknowledged the Specification afore-
said, and all and every thing therein contained and specified in form. above
written. And also the Specification aforesaid was stamped according to the
tenor of the Statute made for that purpose.
Inrolled the Eighth day of June, in the year of our Lord One thousand
eight hundred and forty-one...