IMPROVED APPARATUS FOR CONVERTING A RECTILINEAR RECIPROCATING MOTION INTO A ROTARY MOTION
Year: 1873

page_text: LETTERS PATENT to William Edward Newton, of the Office for Patents,
66, Chancery Lane, in the County of Middlesex, Civil Engineer,
for the Invention of " IMPROVED APPARATUS FOR CONVERTING A RECTILINEAR
RECIPROCATING MOTION INTO A ROTARY MOTION."-A communication
from abroad by Edward David Ashe, of Quebec, in the Dominion
of Canada..
Sealed the 10th February 1874, and dated the 18th August 1878.
PROVISIONAL SPECIFICATION left by the said William Edward
Newton at the Office of the Commissioners of Patents, with his
Petition, on the 18th August 1878.
I, WILLIAM EDWARD NEWTON, of the Office for Patents, 66, Chancery
Lane, in the County of Middlesex,. Civil Engineer, do hereby declare
the nature of the said Invention for " IMPROVED APPARATUS FOR CONVERTING
A RECTILINEAR RECIPROCATING MOTION INTO A ROTARY MOTION," to be as
follows:-
-
This Invention is intended more particularly to be applied to screw
propellor shafts, but is also applicable for communicating rotary motion
to any shaft,

page_text: In carrying out the Invention a drum or sleeve is made fast on the
shaft that is to be rotated, and a double helical groove is cut or made
therein to receive a moveable piece or block, which I will call the driver.
This driver is simply an oblong piece which is capable of being moved
along the curved groove, and is provided with a pin or stud to receive
the end of a rod or arm whereby it may be reciprocated. It is also
provided on its under side with a second pin or stud, which works in a
second or narrow groove made at the bottom of the large groove. This
narrow groove acts as a guide to the driver, and keeps it in its proper
place, especially when turning the ends or corners of the large groove to
enter the return groove. When the driver is reciprocated backwards
and forwards in a straight line it will cause the grooved shaft to rotate
in the required direction.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William Edward Newton in the Great Seal Patent
Office on the 18th February 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
EDWARD NEWTON, of the Office for Patents, 66, Chancery Lane, in the
County of Middlesex, Civil Engineer, send greeting.
.>
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Eighteenth day of August, in the
year of our Lord One thousand eight hundred and seventy-three, in the
thirty-seventh year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said William Edward Newton, Her special
licence that I, the said William Edward Newton, my executors, admini-
strators, and assigns, or such others as I, the said William Edward Newton,
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 APPARATUS
FOR CONVERTING A RECTILINEAR RECIPROCATING MOTION INTO A ROTARY MOTION,"
being a. communication to me from abroad by Edward David Ashe, of
Quebec, in the Dominion of Canada, upon the condition (amongst

page_text: are drawn on an enlarged scale. It will be seen that at the bottom of
the helical groove e there is another groove e² to receive the swivelling
pin d¹ on the under side of the block d, which on its other side is provided
with a large swivel pin d₂, Fig. 2, whereby it is fitted to the end of the
cross head b.
"It will now be understood that as the pin is propelled along the
inner groove e³ of the double helical groove e the block or driver d will
be guided in the latter and made to turn round at the end of the stroke
without creating any undue friction, and consequently the shaft a will
be kept constantly rotating in an uniform manner so long as the cross
heads b, b, with the swivelling blocks or drivers d, d, are made to travel
to and fro in the manner herein-before described.
Having now described the Invention that has been communicated to
me from abroad by my foreign correspondent, and having explained the
manner of carrying the same into effect, I claim as the Invention secured
to me by Letters Patent as aforesaid, imparting rotary motion to a shaft
by means of reciprocating blocks or drivers provided with swivelling
pins, which work in grooves formed at the bottom of a double helical
groove made in or adapted to the shaft to be driven, as herein set forth.
In witness whereof, I, the said William Edward Newton, have here-
unto set my hand and seal, the Sixteenth day of February, in
the year of our Lord One thousand eight hundred and seventy-
four.