AN IMPROVED APPARATUS FOR COMMUNICATING ROTARY MOTION TO SHAFTS BY MANUAL LABOUR
Year: 1871

page_text: LETTERS PATENT to George William Doeg, of Altrincham, in the
County of Chester, Engineer, for the Invention of "AN IMPROVED
APPARATUS FOR COMMUNICATING ROTARY MOTION TO SHAFTS BY MANUAL
LABOUR."
Sealed the 15th August 1871, and dated the 1st March 1871.
PROVISIONAL SPECIFICATION left by the said George William Doeg
at the Office of the Commissioners of Patents, with his Petition,
on the 1st March 1871.
I, GEORGE WILLIAM DOEG, of Altrincham, in the County of Chester,
Engineer, do hereby declare the nature of the said Invention for " AN
IMPROVED APPARATUS FOR COMMUNICATING ROTARY MOTION TO SHAFTS BY Manual
LABOUR," to be as follows:-
My Invention is applicable to chaff-cutting machines, grindstones,
carriages, and the propellers of boats, but it may also be applied to
various other purposes where manual labour is required for communi-
cating rotary motion to shafts.

page_text: A convenient mode of performing my Invention is as follows :—To
the shaft to be driven is fixed a ratchet wheel, and on the shaft is
mounted loosely a wheel or pulley in which is a stud for a catch taking
into the ratchet wheel. To the circumference of this wheel or pulley
are fixed the ends of two bands which are wound on in contrary |
directions. By pulling one of these bands the pulley is moved so as
to bring the catch into gear with the ratchet wheel, thereby turning the
shaft round, and in pulling the other band the catch is drawn out of
gear. The outer ends of the bands may be fixed to a rod and by moving
this rod to and fro a continuous rotary motion is imparted to the shaft,
the momentum of a fly wheel or other portion of the machine carrying
the shaft forward while the driving band is wound up again.
The details must be varied according to the peculiar object to which
my Invention is applied.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said George William Doeg in the Great Scal Patent
Office on the 30th August 1871.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
WILLIAM DOEG, of Altrincham, in the County of Chester, Engineer,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the First day of March, in the year of our
Lord One thousand eight hundred and seventy-one, in the thirty-fourth
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said George William Doeg, Her special licence that
1, the said George William Doeg, my executors, administrators, and
assigns, or such others as I, the said George William Doeg, 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
APPARATUS FOR COMMUNICATING ROTARY MOTION TO SHAFTS BY MANUAL LABOUR,"
upon the condition (amongst others) that I, the said George William

page_text: Doeg, 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 George William Docg, 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 (that is to say) :-
My Invention is applicable to chaff-cutting machines, grindstones,
carriages, and the propellers of boats, but it may also be applied to
various other purposes where manual labour is required for com-
municating rotary motion to shafts.
A convenient mode of performing my Invention is as follows:-To
the shaft to be driven is fixed a ratchet wheel, and on the shaft is
mounted loosely a wheel or pulley, in which is a stud for a catch taking
into the ratchet wheel. To the circumference of this wheel or pulley
aro fixed tho ends of two bands which are wound on in contrary
directions. By pulling one of these bands the pulley is moved so as to
bring the catch into gear with the ratchet wheel, thereby turning
the shaft round, and in pulling the other band the catch is drawn
out of gear. The outer ends of the bands may be fixed to a rod,
and by moving this rod to and fro a continuous rotary motion is im-
parted to the shaft, the momentum of a fly wheel or other portion of
the machine carrying the shaft forward while the driving band is wound
up again.
The details must be varied according to the peculiar object to which
my Invention is applied.
And in order that my Invention may be fully understood and
readily carried into operation, I will proceed to describe the accom-
panying Sheet of Drawings, reference being had to the Figures and
letters marked thereon.
Fig. 1 is an elevation and Fig. 2 a plan of an ordinary chaff-cutting
machine, to which my improved apparatus for communicating motion
by manual labour is annlied.

page_text: a is the driving shaft to which the fly wheel b with the cutters c is
keyed in the ordinary manner. The requisite rotary motion is given
to the shaft a by my improved driving apparatus shewn full size in
Figs. 3 and 4, which represent an elevation and plan thereof. is a
ratchet wheel keyed on the shaft a. The ratchet wheel is enclosed
within the double pulley e, the two halves of which are secured together
by the bolts ; this double pulley is loose on the shaft. One of the
bolts serves as fulcrum for the catch y which is held in gear with the
teeth of the ratchet wheel d by the spring h. Between the two halves
of the double pulley e is a groove which serves as a guide for the rod i,
one end of which has a cross handle j for the operator to hold when
working the machine. To the handle j is fixed one end of the driving
band k, which after being wound one or more times round one-half of
the pulley e is secured to it, and to the other end of the rod i is fixed
one end of the band which is wound on the other half of the pulley e
and is also secured to it. These bands must be wound on in contrary
directions, so that when the rod is pulled in one direction the band k
is drawn off one-half of the pulley e and the band is wound on the
other half, and the contrary action takes place when the rod is moved
in the opposite direction. The teeth of the ratchet wheel d are so placed
that when the rod i is pulled in the direction of the arrow in Figs. 1
and 3, the catch g takes into the teeth and moves the shaft a round in
the direction of its arrow, but when the rod i is pushed back again the
teeth of the ratchet wheel slip under the catch. By this means the
to-and-fro motion of the rod produces a continuous rotary motion in
the shaft, the momentum of the fly wheel or other portion of the
machine carrying the shaft forward during the return stroke of the
rod.
By means of this Invention the physical force is more advantageously
adapted to overcome the resistance than by the usual crank or winch
handle, the power being applied as in rowing.
I wish to observe that my improved apparatus may be applied for
turning grindstones, propelling carriages and boats, and to every
description of machines where manual labour is employed as the motive
power.
Having thus stated the nature of my Invention, and described a con-
venient mode of annlving and constructing the same I wish it to ba

page_text: understood that I do not intend to limit myself to the details given,
and that I claim the improved apparatus for giving rotary motion to
shafts by manual labour as shewn and described.
In witness whereof, I, the said George William Doeg, have
hereto set my hand and seal, this Twenty-ninth day of August,
One thousand cight hundred and seventy-one.
GEORGE W. DOEG. (L.S.)