A NEW OR IMPROVED APPLICATION OF MACHINERY OR APPARATUS FOR PROPELLING CANOES AND SMALL BOATS GENERALLY
Year: 1872

page_text: LETTERS PATENT to John George Pembery, of Carlisle Street,
Lambeth, in the County of Surrey, Boat Builder, for the Inven-
tion of "A NEW OR IMPROVED APPLICATION OF MACHINERY OR APPARATUS
FOR PROPELLING CANOES AND SMALL BOATS GENERALLY."
PROVISIONAL SPECIFICATION left by the said John George Pembery
at the Office of the Commissioners of Patents, with his Petition, on
the 4th April 1872.
I, JOHN GEORGE PEMBERY, of Carlisle Street, Lambeth, in the County
of Surrey, Boat Builder, do hereby declare the nature of the said Inven-
tion for "A NEW OR IMPROVED APPLICATION OF MACHINERY OR APPARATUS FOR
PROPELLING CANOES AND SMALL BOATS GENERALLY," to be as follows:-
My Invention relates to an application of the screw propeller to the
propulsion of canoes and other small boats in such a manner that the
canoe or other boat may be easily and rapidly propelled by the feet or by
the hands of the person or persons occupying the canoe or boat.

page_text: The combination of machinery or apparatus by which I effect my
object will be best understood by reference to the accompanying Sheet
of Drawing, upon which Fig. 1 is a sectional elevation of a canoe
embodying my Invention, and Fig. 2 a top plan view of same.
a, screw; b, screw shaft supported upon bearings fixed at intervals on
the bottom of the canoe; c, bevel pinion on main shaft; d, bevel
wheel set on crank shaft e, and gearing with bevel pinion c; f, f¹, con-
necting rods attached by one end to the cranks e¹, e¹¹, and by the
other end to the footboards or slides g, g¹, sliding in the grooved
supports h, h, h¹, h¹; i, i¹, levers connected by rods k, k¹, with foot-
boards g, g¹, to be used to relieve the feet when tired. These levers will
be made to unship when not required. 7, seat for person occupying the
boat.
The action is as follows:-The crank shaft e is made to revolve by
the to-and-fro movement given to the footboards g, g¹, by the feet of the
person seated in the canoe acting directly on the footboards, or by the
hands acting upon the footboards by the levers i, 2, and connecting
rods k, k¹. The shaft e in revolving carries with it the toothed wheel d,
which gearing with the pinion c turns the shaft b, and sets the screw
at work.
It will be evident that by lengthening the longitudinal shaft 6 more
than one crank shaft e may be used, and the boat be propelled in a
similar manner by several persons.
In applying my Invention to deep boats I propose to divide the screw
shaft as illustrated, Fig. 3, the lower part 6 running along near the
bottom, and actuated by the upper part b¹ by means of the toothed
gearing m, n.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fourth day of April, in the year of
our Lord One thousand eight hundred and seventy-two, in the thirty-
fifth year of Her reign, did, for Herself, Her heirs and successors,
5 give and grant unto me, the said John George Pembery, Her special
licence that I, the said John George Pembery, my executors, admini-
strators, and assigns, or such others as I, the said John George Pembery,
my executors, administrators, and assigns, should at any time agree
with, and no others, from time to time and at all times thereafter
O 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 "A
NEW OR IMPROVED APPLICATION OF MACHINERY OR APPARATUS FOR PROPELLING
CANOES AND SMALL BOATS GENERALLY," upon the condition (amongst others)
5 that I, the said John George Pembery, 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
O calendar months next and immediately after the date of the said Letters
.Patent.
NOW KNOW YE, that I, the said John George Pembery, 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
5 by the following statement, reference being had to the accompanying
: Sheet of Drawing and to the figures and letters of reference placed
thereon:-
My Invention relates to an application of the screw propeller to the
propulsion of canoes and other small boats in such a manner that the
canoe or other boat may be easily and rapidly propelled by the feet or by
the hands of the person or persons occupying the canoe or boat.
The combination of machinery or apparatus by which I effect my
object will be best understood by reference to the accompanying Sheet
of Drawing, upon which Figure 1 is a sectional elevation of a canoe
5 embodying my Invention; and Figure 2 a top plan view of same.
+
a, screw; b, screw shaft supported on bearings fixed at intervals on
the bottom of the canoe; c, bevel pinion on main shaft; d, bevel

page_text: wheel set on crank shaft e, and gearing with bevel pinion c; f, f1 con-
necting rods attached by one end to the cranks e¹, e", and by the
other end to the footboards or slidės 9, g¹³, sliding in the grooved
supports h, h, h¹, h¹; i, ¹, levers connected by rods k, k¹, with foot-
boards g, g', to be used to relieve the feet when tired. These levers will
be made to unship when not required. 1, seat for person occupying the
boat.
The action is as follows:-The crank shaft e is made to revolve by
the to-and-fro movement given to the footboards g, g¹, by the feet of the
person seated in the canoe acting directly on the footboards, or by the
hands acting upon the footboards by the levers i, i¹, and connecting
rods k, k¹. The shaft e in revolving carries with it the toothed wheel d,
which gearing with the pinion c turns the shaft b, and sets the screw
at work.
It will be evident that by lengthening the longitudinal shaft 6 more
than one crank shaft e may be used, and the boat be propelled in a
similar manner by several persons.
For applying my Invention to deep boats I propose to divide the
screw shaft, as illustrated, Fig. 3, the lower part 6 running along near
the bottom and actuated by the upper part 6 by means of the toothed
gearing m, n.
Having now described and ascertained the nature of my said Inven-
tion, and in what manner the same is to be performed, I would have it
understood that I do not limit myself to the use of any particular metal
or material in the construction of the various parts of my apparatus, but a
use such metal or material as I may find to combine the greatest amount
of strength and lightness; nor do I confine myself to any relative
dimensions of parts, nor to the precise details herein set forth, as such
might be varied while retaining the essential characteristics of my
Invention; and that what I claim as secured to me by the herein-before
in part recited Letters Patent is,―
Firstly. The combination of the footboards or slides g, g', with, the
grooved supports h, h, h¹, h¹, and with the cranked shaft e, substantially
as and for the purpose herein-before set forth.
Secondly. The combination with the footboards or slides g, g¹, of the
levers i, ¹, substantially as and for the purpose herein-before. set forth.

page_text: Thirdly. The division of the screw shaft, substantially as and for the
purpose herein-before set forth.
In witness whereof, I, the said John George Pembery, have here-
unto set my hand and seal, this Third day of October, in the year
of our Lord One thousand eight hundred and seventy-two.