DISCLAIMER, AND MEMO- RANDUM OF ALTERATION
Year: 1829

page_text: GALLOWAY'S SPECIFICATION, DISCLAIMER, AND MEMO-
RANDUM OF ALTERATION.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ELIJAH
GALLOWAY, of King Street, in the Borough of Southwark, Engineer, send
greeting.
WHEREAS His most Excellent Majesty King George the Fourth, by His
Letters Patent under the Great Seal of Great Britain, bearing date at West-
minster, the Second day of July, in the tenth year of His reign, did, for
Himself, His heirs and successors, give and grant unto me, the said Elijah
Galloway, His especial licence that I, the said Elijah Galloway, my executors,
administrators, and assigns, or such others as I, the said Elijah Galloway, my
executors, administrators, and assigns, should at any 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, Wales, and the Town of Berwick-upon-Tweed, and also in all
His Majesty's Colonies and Plantations abroad, my Invention of "CERTAIN
IMPROVEMENTS IN STEAM ENGINES, AND IN MACHINERY FOR PROPELLING VESSELS,
WHICH IMPROVEMENTS ARE APPLICABLE TO OTHER PURPOSES;" in which said Letters
Patent there is contained a proviso obliging me, the said Elijah Galloway,
by an instrument in writing under my hand and seal, particularly to describe
and ascertain the nature of my said Invention, and in what manner the
same is to be performed, and to cause the same to be inrolled in His
Majesty's High Court of Chancery within six calendar months next and im-
mediately after the date of the said 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 Elijah
Galloway, do hereby declare that the nature of my said Invention consists,―
First, in an improvement of the steam engine, whereby I am enabled to
obtain a rotatory motion from the alternating action of the axis of a piston,
which piston makes about three fourths of a revolution within the steam cylinder;
And, secondly, in an improvement on paddle wheels for propelling vessels,
whereby the float boards or paddles are made to enter and come out of the
water in positions' the best adapted, as far as experiments have determined
the angle, for giving full effect to the power applied. .
And in further compliance with the said proviso, I, the said Elijah Galloway,
do hereby describe the manner in which my said Invention is to be performed,
by the following description thereof, reference being had to the Drawing here-
unto annexed, and to the figures and letters marked thereon, that is to say:-
DESCRIPTION OF THE DRAWING.
In the part marked Drawing A, Figure 1 is an end view of a steam
engine with my improvement applied, the piston of which performs about
three fourths of a revolution; 'Figure 2 shews a side view of the engine; and
Figure 8, a cross section of the steam cylinder, shewing the piston and the
steam passages. I will here observe, that I only represent as much of the
steam engine in the Drawing as is necessary for the purpose of explaining
how my improvement is to be applied, and no particular description will
be necessary of those parts which are well known to engineers. In all the
Figures the same letters of reference indicate similar parts of the machinery,
and the parts which constitute my improvement are tinted with blue and
yellow. a, the crank fixed on to the shaft, which carries the fly-wheel; b; the
connecting rod, which is connected to the crank a by the pin c, and to a
lever d by the pin e, which said lever d is fixed to the crank pin g by which
the lever d receives its backward and forward motion by the alternating
rotative motion of the axis f; in the lever d is a mortice h, into which mortice
a bearing i is fitted; on which the lever d slides, and which is for the purpose
of guiding the lever d; and thereby causing the end of the connecting rod
to perform the curve shewn by the dotted red line; j is a pin passing through
the framework of the engine, the point of which enters into and supports the
bearing i, yet allowing it to turn and accomodate itself to the different posi
tions which the lever d takes in being moved by the axis of the piston.
Now it will be evident that, if the piston be moved by the steam from m to n
in the direction of the arrow in Figure 3, which motion is hereafter more par-
ticualrly described, the end g of the lever d will be carried round to the position
1

page_text: shewn by the dotted red lines in Figure 1, which will be about three fourths
of a circle,.and the cranke.a will, by the intervention of the connecting rod b,
have performed the revolution of about, half a circle, as indicated by the
dotted lines from o to p, and the momentum obtained in the fly-wheel will
carry it somewhat, further,. and the return stroke of the piston from n to m, in
Figure 3, will cause the crank a to perform the remainder of the revolution
from p to o. Although I have described the sliding lever d as having a
mortice in it, and sliding on the bearing.i, it is evident that the same effect.
may be produced in various ways; for instance, instead of a mortice. there may
be a raised tenon, formed on the lever d, and a grooved piece substituted for.
the bearing i, or there may be a friction roller in place of the bearing i, or any
other similar mechanical contrivance, my improvement consisting in obtain-
ing a rotatory motion. from the.axis of a piston in a steam engine, (which piston
makes something.less than a revolution in the cylinder,) by means of a sliding.
lever in the manner above described.. The manner in which the motion is
given to the piston.is shewn in Figure 3. A cock (as shewn at Figure 5) is
placed at ; the steam comes in at w, and, passing round the cock and along the
passage z, enters the cylinder at m, and the piston is turned in the direction of
the arrow.towards n, the position of the cock being changed by the apparatus
shewn at.X, in Figure 2, (so that. the aperture o, shewn in Fig. 3 as coin-
ciding with 2, is made to coincide with 1); the steam is admitted through the
passage.v.and. enters the cylinder at n, the waste steam in both cases escaping
through. o, x, y, (see Figures. 3 and 5). Figure 4 represents another modifi-
cation, where the sliding motion and the lever d are done away with, and
the mechanism g, k, e, substituted; a crank (similar to that described as
attached to the axis f, in. Figures 1 and 2, connected at g with the mechanism,
being made to perform about three fourths of a revolution, and a radius j, k,
by vibrating upon the fixed pin at j, together cause the extremity e of the
mechanism to describe the curve shewn by a dotted red line, which motion, by
means of a connecting rod attached at e, would produce rotatory movement
in the crank a in Figures 1 and 2. .
Having now described that part of my invention which relates to steam
engines, I will proceed to that which relates to paddle wheels or machinery
for propelling vessels.
DESCRIPTION OF THAT PART OF THE DRAWING MARKED DRAWING B.
Figure 1 represents a section of a paddle wheel constructed according to
my improvement; Figure 2, an end view; and Figure 3 shows one of the
side framings of the wheel; the same letters of reference indicating similar

page_text: parts in all the Figures. a, b, c, d, and e, the float boards or paddles, which are
fixed by straps and screw bolts or by any other suitable means to bent stems
marked f, which stems are shewn separately in Figure 4, g, h, i, j, and k,.
are connecting rods, attached at one of their ends by pins or bolts : to the
bent stems f, of the float boards, and the other ends of all these rods, excepting
9, are attached to the disc A by pins or bolts S, as shewn in Figure 5.
The disc A is made to revolve on the crank B; C is the framing; D are the
radiating arms of the wheel; t are the axes, (which carry the stems of the
float boards, and which connect the two sides of the framing of the wheel,)
shown separately with their screws and nuts V in Figure 4. E1 and E2 are
the naves or bosses, to which the radiating arms are fixed by screw bolts
or by any other suitable means. The crank B is represented separately at
Figure 6, and it will be seen that it is fixed in the outer bearing F, and is
prevented from turning therein by the adjusting screws x, or by keys, or by
both. The outer nave plate or boss E 2, Figure 2, revolves round the party,
Figure 6, which forms its axis. G is the shaft which communicates rotatory
motion from the engine, and which shaft G is made fast to the inner nave
plate or boss E 1, Figure 2, and thus the wheel is made to revolve indepen-
dent of the crank, the part being merely a bearing and not a fixture.
Now it will be evident from the above description, that, on turning the
wheel in the direction of the arrow, Figure 1, the paddle or float board d will
be carried forward to nearly the position of e. It will be seen that the lever g
is made fast to the disc A, and does not turn on a pin, as is the case with the
others, consequently the advancing of d to the position of 'e will turn the
disc A, and with it the other levers h, i, j, and k, which, together with the
revolving of the wheel, will cause each of the paddles or float boards suc-
cessively to take the position shown by d, and all the other positions shown
in the Drawing.
It is only necessary further to add, that the improvement in the steam
engine is applicable to engines for driving machinery on land and for raising
water, as well as for marine purposes, and that the improvement in the
paddle wheel may be applied to undershot water wheels as well as for
propelling vessels.
Now whereas I claim as my Invention,―
First, as regards my improvement in steam engines, the obtaining of
a rotatory motion from an alternate motion of the piston by means of the
lever d, the mortice h, and the pin or bearing i, or by means of the mechanism
or combination of levers shown at Fig. 4;
And, secondly, as regards my improvements on machinery for propelling

page_text: vessels, the mode herein-before described of giving the required anglo to
the paddles by means of the rods g, h, i, j, and k, the bent stems marked f,
the disc A, and the crank B.
And such my improvements being, to the best of my knowledge and belief,
entirely new, and never before used within that part of His said Majesty's
United Kingdom of Great Britain and Ireland called England, His said Domi-
nion of Wales, or Town of Berwick-upon-Tweed, nor in any of His said Majesty's
Colonies or Plantations abroad, I do hereby declare this to be my Specifi-
cation of the same; and that I do verily believe that this my said Specification
doth comply in all respects fully and without reserve or disguise with the proviso
in the said herein-before in part recited Leters Patent contained, wherefore I
do hereby claim to maintain exclusive right and privilege to my said Invention.
In witness whereof, I, the said Elijah Galloway, have hereunto set my
hand and seal, the Twenty-third day of December, in the year of our
Lord One thousand eight hundred and twenty-nine.
ELIJAH (L.s.) GALLOWAY.
AND BE IT REMEMBERED, that on the Twenty-third day of December,
in the year of our Lord 1829, the aforesaid Elijah Galloway came before our
said Lord the King in His Chancery, and acknowledged the Specification
o aforesaid, 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 Second day of January, in the year of our Lord One thou-
sand eight hundred and thirty.

page_text: DISCLAIMER.
In the Matter of a Patent granted to Elijah Galloway, of King Street,
_ in the Borough of Southwark, Engineer, for the sole making, using,
exercising, and vending of his Invention of "Certain Improvements
in Steam Engines, and in Machinery for Propelling Vessels, which
Improvements are applicable to other Purposes," bearing date at
Westminster, the Second day of July, in the tenth year of the
reign of His late Majesty King George the Fourth. To which said
Patent the said Elijah Galloway did enrol a Specification; and the
said Letters Patent, and all interest therein, have been assigned to
and are now vested in James Lancaster Lucena, of the Middle
Temple, in the City of London, Barrister-at-Law, who has granted
to William Morgan, of Minerva Cottage, New Cross, in the County
of Surrey, Engineer, his exors, admors, and assigns, license to use
and practice, for his and their benefit, the said Patent Invention
during the remainder of the term granted by the said Letters Patent,
rendering to the said James Lancaster Lucena certain sums of
money or reservations.
CLAIMER to be entered by the said James Lancaster Lucena, assignee of
the said Patent, and the said William Morgan, the possessor of the said
License, with the Clerk of the Patents of England, pursuant to an Act
passed in the fifth and sixth year of the reign of His late Majesty King
William the Fourth, entituled. "An Act to amend the Law touching
Letters Patent for Inventions."
..
Whereas the said Elijah Galloway, in the said Specification, described his
ention as consisting, first, in an improvement the steam engine, whereby
was enabled to obtain a rotatory motion from the alternating action of the
of a piston, which piston makes about three fourths of a revolution
ain the steam cylinder; and, secondly, in an improvement on paddle
eels for propelling vessels, whereby the float boards or paddles are made
nter and come out of the water in positions the best adapted, as far as ex-
ments have determined the angle, for giving full effect to the power applied:
And whereas the said Invention, as relating to steam engines, has been
med and adjudged not to be useful, and the validity of the said Patent
been or may be thereby affected:
nd whereas the said James Lancaster Lucena and William Morgan have
nor hath either of them hitherto used for other purposes than that of pro-
ng vessels the said Invention as relating to machinery for propelling vessels:

page_text: We do; therefore, disclaim so much of the title of the said Invention of
the said Eljiah Galloway, and of the Specification thereof, as relates to his
improvement in steam engines, and also so much of the title of the said Inven-
tion as is contained in the words "which improvements are applicable to other
purposes," and so much of the said Specification as relates to such other
purposes.
In witness whereof, we, the said James Lancaster Lucena-and William
Morgan, have hereunto set our hands, this Fifteenth day of Decem-
ber, One thousand eight hundred and thirty-eight
To the Clerk of the Patents of England.
JAMES L. LUCENA.
... WILLIAM MORGAN.
This is to certify, that James Lancaster Lucena and William Morgan,
above named, have applied to me for leave to enter with you the above written
Disclaimer of part of the Specification of a certain Invention for which Letters
Patent were duly granted to the above-named Elijah Galloway, under the
Great Seal, dated the Second day of July, in the tenth year of the reign of
His late Majesty King George the Fourth, and the Specification of which
was inrolled on the Second day of January following; and ou considering of the
said application, I directed them to advertize their said Disclaimer in the
"London Gazette" and in the "Times" and "Morning Chronicle" news-
papers, and such advertisements have been duly made in the said "Morning
Chronicle" and in the "Times" on the 22d day of October last past, and
also in the "London Gazette" on the 23d day of the said month of October, and
no valid objection having been made to the said application, I have accordingly
granted leave to the said James Lancaster Lucena and William Morgan to file
their said Disclaimer, pursuant to the Statute passed in the 6th year of His
late Majesty, entitled "An Act to amend the Law touching Letters Patent
for Inventions"
!

page_text: In the Matter of a Patent granted to Elijah Galloway, of King Street, in
the Borough of Southwark, Engineer, for the sole making, using,
exercising, and vending of his Invention of "Certain Improvements
in Steam Engines, and in Machinery for Propelling Vessels, which
Improvements are applicable to other Purposes," bearing date at
Westminster, the Second day of July in the tenth year of the reign
of His late Majesty King George the Fourth. To which said
Patent the said Elijah Galloway inrolled a Specification; and
the said Letters Patent, and all Interest therein, have been assigned
to and are now vested in James Lancaster Lucena, of the
Middle Temple, in the City of London, Barrister-at-Law, who has
granted to William Morgan, of Minerva Cottage, New Cross, in the
County of Surrey, Engineer, his exors, admors, and assigns, license
to-use and practice, for his and their benefit, the said Patent Invention
during the remainder of the term granted by the said Letters
Patent, rendering to the said James Lancaster Lucena certain sums
of money or reservations.
MORANDUM of Alteration to be entered by the said James Lancaster
Lucena, assignee of the said Patent, and the said William Morgan, the
possessor of the said Licence, with the Clerk of the Patents of England,
pursuant to an Act passed in the fifth and sixth years of the reign of his
late Majesty King William the Fourth, intituled "An Act to amend the
Law touching Letters Patent for Inventions."
Whereas the said Elijah Galloway in the said Specification declared that the
ure of his Invention consisted, first, in an improvement of the steam engine,
ereby he was enabled to obtain a rotatory motion from the alternating action
the axis of a piston, which piston makes about three fourths of a revolution
hin the steam cylinder; and; secondly, in an improvement on paddle
eels for propelling vessels, whereby the float boards or paddles are made to
er and come out of the water in positions the best adapted, as far as experi-
nts have determined the angle, for giving full effect to the power applied.
And whereas it being conceived that the said Specification, so far as relates
the improvement in paddle wheels or machinery for propelling vessels, may be
dered more generally easy of comprehension, we, in order to effectuate that ob-
t, are desirous of entering a Memorandum of Alteration in the said Specifica-

page_text: tion, containing the following additional explanation:-The mode of adjusting
the eccentricity, so as to obtain the different angles which may be necessary or
required, will be sufficiently obvious to mechanical and scientific persons.
The accompanying Diagram more distinctly explains it. Draw a line to repre-
sent the float (d) at the required angle, entering the water; another line to
represent the float at the required angle, quitting the water; and a third line
to represent the float at the lowest point under the centre where the float
ought to be vertical or nearly so; those three positions give the centre of
eccentricity by a well-known mathematical proposition, for the extremities
of the bent stems (f) will be points in the excentric circle, and from those
points the centre may immediately be found. The lengths of the rods also
will be obtained by drawing lines from the points where the end of each
stem f touches the excentric circle to its pin joint in the disc A, and thus
a construction may be made for any required case, as will appear in the Figure
or Drawing C. G is the centre of the main shaft; O, M, is a line repre-
senting the float entering the water; O, Q, is bent stem; P, N, is a line
representing the float quitting the water; P, R, its bent stem; F, J, is a line
representing the, float vertical at the lowest point, or immediately under the
centre G; F, L, its bent stem; then Q, L, R, are points in the excentric
circle from which X the centre may be found by well-known mathematical
methods, and giving to the centre the practical size which its required strength
may render necessary; X, L, is the fixed rod; and s, H, s I, &c. are the
other rods.
In witness whereof, we, the said James Lancaster Lucena and William
Morgan, have hereunto set our hands, this Fifteenth day of December,
JAMES L. LUCENA.
WILLIAM MORGAN.
To the Clerk of the Patents of England.
WILLIAM MORGAN.
This is to certify, that James Lancaster Lucena and William Morgan, above
named, have applied to me for leave to enter with you the above-written Memo-
randums of Alteration of part of the Specification of a certain Invention, for which
Letters Patent were duly granted to the above-named Elijah Galloway under
the Great Seal, dated the Second day of July, in the tenth year of the reign
of His late Majesty King George the Fourth, and the Specification of which
was inrolled on the Second day of January following; and on considering of
the said application, I directed them to advertize their said Memorandums
of Alteration in the "London Gazette and in the Times and Morning

page_text: Chronicle.newspapers," and such advertizements have been duly made in the
said Morning Chronicle, and in the Times on the 22nd day of October
last past, and, also in the London Gazette on the 23rd day of the said month
of October, and no valid objection having been made to the said application,
I have: accordingly granted leave to the said James Lancaster Lucena and
William Morgan to file their said Memorandums of Alteration, pursuant to
the Statute passed in the sixth year of His late Majesty, entitled "An Act to
amend the Law touching Letters Patent for Inventions."
Lincoln's Inn,
17th December 1888.
R. M. ROLFE.
AND BE IT REMEMBERED, that on the Seventeenth day of December,
in the year of our Lord 1888, the aforesaid James Lancaster Lucena. and
William Morgan came before our said Lady the Queen in Her Chancery,
and acknowledged the Disclaimer aforesaid, and all and every thing therein
contained and specified, in form above written. And also the Disclaimer
aforesaid was stamped according to the tenor of the Statute made for that
purpose.
Inrolled the Eighteenth day of December, in the year of our Lord One
thousand eight hundred and thirty-eight.