A METHOD OF MAKING OR MANUFACTURING MALLEABLE CAST METAL SHOES FOR DRAFT AND RIDING HORSES AND OTHER ANIMAIS UPON A NEW AND IMPROVED PLAN OR PRINCIPLE
Year: 1822

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
BARNARD WILLIAMSON DUDLEY, of King Street, in the Parish of Saint Anne,
Westminster, in the County of Middlesex, Mechanist, send greeting.
WHEREAS by Letters Patent under the Great Seal of Great Britain,
bearing date at Westminster, the Sixteenth day of December, in the Third
year of the reign of His most Excellent Majesty King George the Fourth,
after reciting (amongst other things), that I had by my petition humbly
represented to His said Majesty that I, after considerable application and
expence, had invented and found out "A METHOD OF MAKING OR MANUFACTURING
MALLEABLE CAST METAL SHOES FOR DRAFT AND RIDING HORSES AND OTHER ANIMAIS
UPON A NEW AND IMPROVED PLAN OR PRINCIPLE," His said Majesty, of His
especial grace, certain knowledge, and mere mention, for Himself, His heirs
and successors, did give and grant unto me, my exors, admors, and assigns,
His especial licence, full power, sole privilege and authority, that I, my exors,
adiňors, and assigns, and every of them, by myself or themselves, or by my and
their deputy or deputies, servants or agents, or such others as I, my exors,
adiñors, or assigns, should at any time agree with, and no others, from time
to time and at all times thereafter during the term of years therein expressed,
should and lawfully might make, use, exercise, and vend my said Invention
within that part of the United Kingdom of Great Britain and Ireland called
England, the Dominion of Wales, and Town of Berwick-upon-Tweed, and also
in all His said Majesty's Colonies and Plantations abroad, in such manner
as to me, my exors, admiors, and assigns, or any of them, should in my or

page_text: their discretions seem meet, and that I, my exors, adññors, and assigns, should
and lawfully might have and enjoy the whole profit, benefit, commodity, and
advantage from time to time coming, growing, accruing, and arising by reason
of the said Invention, for and during the term of years therein mentioned, to
have, hold, exercise, and enjoy the said licence, powers, privileges, and advan-
tage therein-before granted or mentioned to be granted unto me, my exors,
adiiors, and assigns, for and during and unto the full end and term of fourteen
years from the day of the date of the said Letters Patent now in recital, next and
immediately ensuing and fully to be complete and ended, according to the Statute
in such case made and provided; and the said Letters Patent now in recital
contains a proviso; that if I should not particularly describe and ascertain the
nature of my said Invention, and in what manner the same is to be performed,
by an instrument in writing under my hand and seal, and cause the same to
be inrolled in His said Majesty's High Court of Chancery within six calendar
months next and immediately after the date of such Letters Patent, that then
the same Letters Patent, and all liberties and advantages whatsoever thereby
granted, should utterly cease, determine, and become void, anything therein-
before contained to the contrary thereof in anywise notwithstanding, as by the
said Letters Patent, on reference thereto, will more fully and at large appear.
NOW KNOW YE, that in compliance with the said "proviso, I, the said
Thomas Barnard Williamson Dudley, do by this present instrument in writing
under my hand and seal, declare, describe, and ascertain the nature of my
said Invention, and in what manner the same is to be performed; and for the
better illustration of such part of my Invention as cannot be clearly manifested
or shewn by any other means, I have annexed a Drawing representing a con-
cave shoe that may be worn by horses and other animals, and various sections
thereof.
And, first, I cause my malleable cast metal shoes for draft and riding horses
and other animals to be cast of the best charcoal pig iron, and I afterwards
decarbonate or toughen such shoes by exposing them to a high red heat in
closed vessels in contact with substances having an affinity for carbon, such
as iron filings, the black oxide of iron, or the scales from a smith's forge, the
red hæmatite or ore of iron, and other similar substances, for from twenty-
four hours to three weeks according to the greater or lesser thickness or sub-
stance of the said shoes, when they will have acquired the necessary degree of
malleability and have become exceedingly. tough instead of being brittle and
liable to break as they were before being subjected to the above decarbonating
process.
I do not, however, intend hereby to claim the Invention of decarbonating

page_text: cast iron in order to render it malleable, such a practice having been long in
use, but malleable cast metal not having hitherto, as I believe, been applied to
the purpose of manufacturing horseshoes or shoes for any other animals for
public use by any other person than myself, I claim as the Invention thereof
the sole privilege of making and manufacturing for my own profit, cast metal
shoes for draft and riding horses and other animals during the term in the
before-recited Letters Patent mentioned.
It has frequently been attempted to make horseshoes by other means than
forging, such as stamping them red hot and so forth, but I believe without
the advantages expected to be derived therefrom being realized; it is, however,
exceedingly desirable to form horseshoes and shoes for other animals of the
most approved shapes, in a more ready manner than can be done by the usual
methods, and nothing can be more convenient than casting them, as all the
forms given to the models at a very considerable expense can thus be given
to the castings with the utmost facility. I can, for instance, afford to manu-
facture and sell at a reasonable price the improved concave shoes recommended
by Mr. Joseph Goodwin, late veterinary surgeon to His Majesty, in his treatise
on shoeing horses, which shoes, on account of the great expense of making
them, have not hitherto come into that general use which their superior
advantages over others, by reason of their shape or form, justly entitle them
to; I do not, however, claim the said improved concave shoes as my Inven-
tion. I have also been enabled to introduce an additional improvement upon
the said concave shoes (capable of being applied to any other shoes having a
concave under surface), which I shall explain by a reference to the Drawing
hereunto annexed as aforesaid (that is to say)
Figure 1 of the said Drawing represents the shoe recommended by Mr.
Goodwin as above, viewed on its upper side; Figure 2, a view of the under
side of the shoe. A, A, in Figure 2, is a raised border, or cord, or ledge
running along the inside rim or rib of the shoe, and the use of it is not only
to strengthen the inner. rim or web, but likewise to prevent any flint, gravel,
stone, and so forth, which may come in contact with the shoe, from being
thrust or forced upon the sole of the foot. Its situation in use is best seen
in the cross section, Figure 3, which is taken at the dotted line B, B, in
Figure 2, and whereby its use in stopping the above-mentioned or any other
matters or substances so as to prevent them from gliding up the inclined plane
of the under side of the shoe is evident. I have given a rounded or convex
shape to the said border, or cord, or ledge A, A, but any other shape or form
capable of producing the same effects may be employed, and I particularly
claim such border, or cord, or ledge, (which is the additional improvement

page_text: upon the concave shoes before referred to) as my Invention. Figure 4 is a
section of the shoe taken at the dotted line C, C, in Figure 2, and, as well as
Figure 5, which is an outward edge view of the shoe, shews the manner in
which the toe of the shoe rises or curves from the straight line D in both those
Figures. Figure 6 is a front view of the shoe; and Figure 7, a hind view of
it, from all of which Figures the exact shapes given to the different parts of
a concave shoe (my raised border, or cord, or ledge not being applicable to any
other than concave shoes) may be seen; but as the reasons given for the
adoption of these particulars shapes are already published in the before men-
tioned treatise, and such shapes do not constitute any part of my Invention,
it is unnecessary to particularize them here.
To prevent doubt or misapprehension, I declare that my claim under the
before-recited Letters Patent is only two-fold.
First, to the exclusive right of making and manufacturing malleable cast
metal shoes for draft and riding horses and other animals, as aforesaid.
And, secondly, to the exclusive right of making and manufacturing such
raised border, or cord, or ledge, as herein-before mentioned or referred to,
which border, or cord, or ledge I propose to put upon any shoe having a con-
cave under surface, whether such shoe rises or curves at the toe thereof, or be
made straight, or be otherwise varied in its shape or form from the shoe repre-
sented on the Drawing, such Drawing representing a concave shoe merely.to
enable me to shew how the border, or cord, or ledge which I have invented is
to be applied or used. I deem it proper to observe that my malleable cast
metal shoes, made or manufactured as aforesaid, are capable of receiving any
alteration whatever that may be required in their size or form, by being pre-
viously subjected to the usual fire of a smith or farrier at what is well known
by the name of red or blood heat, but not at white or welding heat, which
should be avoided.
In witness whereof, I, the said Thomas Barnard Williamson Dudley,
have hereunto set my hand and seal, this Twelfth day of June, in
the year of our Lord One thousand eight hundred and twenty-three.
Sigued, sealed, and delivered by the within-
named Thomas Barnard Williamson
Dudley, in the presence of
T. B. W. DUDLEY. (L.S.)

page_text: AND BE IT REMEMBERED, that on the Twelfth day of June, in the
year of our Lord 1823, the aforesaid Thomas Barnard Williamson Dudley
came before our said Lord the King in His Chancery, and acknowledged the
Specification 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.
Inselled the Twelfth dor of Tune in the roar of our Lord One thousand