CERTAIN ENGINES CALLED COACH SPRINGS, WHEREBY COACHES, CHARIOTS, BERLINS, CHAISES, MACHINES, AND CARRIAGES OF ALL KINDS MAY BE HUNG WITH THE UTMOST SAFETY, EASE, AND PLEASURE, TO THE PERSONS WHO RIDE IN THEM
Year: 1757

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
HARRISON, of Red Lyon Square, in the County of Middlesex, Watchmaker,
send greeting.
WHEREAS I, the said William Harrison, by my Petition, did humbly repre-
sent unto His Majesty that I had, with great labour, study, and expence, invented
and brought to perfection "CERTAIN ENGINES CALLED COACH SPRINGS, WHEREBY
COACHES, CHARIOTS, BERLINS, CHAISES, MACHINES, AND CARRIAGES OF ALL KINDS
MAY BE HUNG WITH THE UTMOST SAFETY, EASE, AND PLEASURE, TO THE PERSONS WHO
RIDE IN THEM," and by my said Petition did humbly pray His Majesty to
grant unto me His Royal priviledge and lycence for the sole use and property
of the said Invention; and whereas, in pursuance of the said Petition, His
Majesty, by His Royal Letters Patent, bearing date the Eleventh day of
November, in the thirty-first year of His reign, did give and grant unto me,
the said William Harrison, my executors, administrators, and assigns, His
especial lycence, full power, sole priviledge and authority, that I, the said
William Harrison, my executors, administrators, and assigns, should and
lawfully might, for the term of fourteen years, make, use, exercise, and vend
my said Invention within that part of His said Majesty's Kingdom of Great
Britain called England, His Dominion of. Wales, and Town of Berwick-
upon-Tweed, and His Plantations abroad, in such manner as to me, the said
William Harrison, my executors, administrators, or assigns, should seem
meet, and that I, the said William Harrison, my executors, administrators,
and assigns, should and lawfully might have and enjoy the whole profit,
benefit, comodity, and advantage from time to time coming, growing, accrue-

page_text: ing, and arising, by reason of the said Invention, for and during the said
term; in which said Letters Patent there is contained a provisoe obliging me,
the said William Harrison, to describe and ascertain the nature of the said
Invention, and in what manner the same is to be performed, by an instrument
in writing under my hand and seal, and to cause the same to be inrolled in
the High Court of Chancery within four calendar months next and imme-
diately after the date thereof.
NOW KNOW YE, that I, the said William Harrison, in complyance with
the said provisoe, do hereby declare that the nature of my said Invention, and
the manner in which the same is to be performed, is set forth and described in
a Draught or Plan, with the several explanations thereof, hereunto annexed.
In witness whereof, I, the said William Harrison, have hereunto, and to
the said Draught or Plan hereunto affixed, set my hand and seal, this
Eighteenth day of February, in the thirty-first year of the reign of His
said Majesty King George the Second, One thousand seven hundred
fifty-eight.
Inrolled the Twenty-fifth day of February, in the thirty-first year of
the reign of His Majesty King George the Second, 1758.

page_text: for the conveniency of pinning them to the frame b
b. One of the frames to which the ends of the Hoop springs are pinned
c. The bolt that prevents the springs from expanding beyond their proper
limits as also from snapping asunder
d. A check spring rivetted on the inside of each frame and thro' which
the bolt plays this spring by counteracting the motion of the hoop springs
breaks the force of any violent jolt of the Carriage.
e. A compleat Coach Spring at rest containing four Hoop Springs the ends
of which turn upon Pins rivetted at 1
The brace pin.
g. A compleat Coach Spring of another sort that is expanded when at
rest and closes by compression.
h.
i .h. The different parts of the compleat Coach Spring g to which
also the check spring d may be applied; and the Hoop spring k, shows the
form of the Hoop spring a, when in motion.
N. B. The number of Heep springs may be encreased by placing them
one within the other. or by the side of each other, or at right angles, according
to the weight of the Carriage, and may be made to turn each upon a
seperate Pin, or several upon the same pin.
William Harrison LS.)