IMPROVED TRAVERSING CRANK ARRANGEMENTS FOR MOTIVE MECHANISM."ARRANGEMENTS FOR MOTIVE MECHANISM
Year: 1874

page_text: LETTERS PATENT to John Hardy, of Huish; Yeovil, in the County
of Somerset, for the Invention of "IMPROVED TRAVERSING CRANK
ARRANGEMENTS FOR MOTIVE MECHANISM."
ARRANGEMENTS FOR MOTIVE MECHANISM."
Sealed the 24th November 1874, and dated the 25th August 1874.
PROVISIONAL SPECIFICATION left by the said John Hardy at the
Office of the Commissioners of Patents, with his Petition, on the
25th August 1874.
I, JOHN HARDY, of Huish, Yeovil, in the County of Somerset, do
hereby declare the nature of the said Invention for "IMPROVED TRA-
VERSING CRANK ARRANGEMENTS FOR MOTIVE MECHANISM," to be as follows: -
This Invention has reference to improved traversing crank arrange-
ments for motive mechanism, the intention whereof is to effect great
economy in the use and application of motive power for various purposes,
and by this means it is calculated that an engine of small power will do
the work of one of far larger power when not constructed with the said
arrangements applied thereto, - ----· ·

page_text: The arrangements of this traversing crank consists of a slotted lever,
into which one end or a pin or stud on one end of the said traversing
crank works, the other end being connected to the piston rod or other
suitable mechanical construction. The slotted lever is jointed to any
convenient part of the engine or other mechanism, and thus in action
the whole of the friction or, nearly the whole, is thrown back on the
joint of the said lever, and great economy of power results from such
action.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Hardy in the Great Seal Patent Office on
the 25th February 1875.
1
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
HARDY, of Huish, Yeovil, in the County of Somerset, send greeting..
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-fifth day of August, in the
year of our Lord One thousand eight hundred and seventy-four, in
the thirty-eighth year of Her reign, did, for Herself, Her heirs and
successors, give and grant unto me, the said John Hardy, Her special
licence that I, the said John Hardy, my executors, administrators,
and assigns, or "such others as I, the said John Hardy, 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 "IMPROVED TRA-
VERSING CRANK ARRANGEMENTS FOR MOTIVE MECHANISM," upon the condition
(amongst others) that I, the said John Hardy, my executors or admini-
-strators, 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 per-
formed, 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 John Hardy, do hereby declare

page_text: be performed, to be particularly described and ascertained in and by the
following statement :-.
This Invention has reference to improved transversing crank arrange-
ments for motive mechanism, the intention whereof is to afford great
economy in the use of and application of motive power for various
purposes, and by this means it is calculated that an engine of small
power will do the work of one of far larger power when not constructed
with the said arrangements applied thereto.
'
The arrangements of this traversing crank consists of a slotted lever,
into which one end or pin or stud on one end of the said traversing
crank works, the other end being connected to the piston rod or other
suitable mechanical construction. The slotted lever is fastened to any
convenient part of the engine or other mechanism, and thus in action
the whole of the friction, or nearly the whole, is thrown back on tho
joint of the said lever, and great economy of power results from such
action.
The foregoing statements particularly describe and ascertain the
nature of my said Invention, and indicate in what manner the same is
to be performed or carried out in practico; and in further compliance
with the aforesaid condition in the said Letters Patent contained, I will
now proceed to more fully and particularly describe and ascertain the
same, especially as to what manner the same is to be performed, by
referring to the Drawings accompanying these Presents, that is to

page_text: The mode of action is as follows :-Force or power is exerted at the
point a (Figure 3), and the crank in the slot C. traverses up to point
b, and when the crank is one-third over it goes back to its former
position at c. Then as the revolution of the crank proceeds it traverses
in the slot from c to d, which brings same to the position shown in t
Figure 2. The revolution is completed in the same way, the crank going
to the different positions in the slot till on the complete revolution it
assumes the position as when first started.
The position at which the piston rods which work the pistons in the
cylinders can be applied are indicated by the dotted lines e, f, and g, the
dotted line showing the position at which gear arrangements can be
attached to the lever.
Having now particularly described and ascertained the nature and
object of my Invention, and in what manner the same is to be performed
or put in practice, I hereby declare that I claim the Invention of 1
"Improved Traversing Crank Arrangements for Motive Mechanism,"
as the same is herein-before set forth and described, wherein the peculiar
and important point is the use of the slotted lever as to its conjunction
and use, as described..
In witness whereof, I, the said John Hardy, have hercunto set 2
my hand and seal, this Twentieth day of February, in the year
of our Lord One thousand eight hundred and seventy-five.
Witness,
CHAS. JOSEPH EGLETON,
South Street,
Yeovil.
JOHN HARDY. (L.S.)