NEW-INVENTED PERAMBULATOR OR MEASURING WHEEL OF THIRTY-ONE INCHES AND AN HALF DIAMETER, WITH A BAR FIXED IN THE CENTER, AND THREE OR FOUR HANDS TO DENOTE POLES, FURLONGS, AND MILES, TO AN EXACTNESS OF FIVE INCHES, AND THE WHOLE ENCLOSED IN A WALKING STICK AS A PORTABLE INSTRUMENT FIT FOR GENTLEMEN AND LADIES TO MEASURE ROADS OR LANDS
Year: 1765

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ISAAC
FENN, of Swallow Street, near Hanover Square, in the County of Middlesex,
send greeting.
WHEREAS His most Excellent Majesty King George the Third, by His
Royal Letters Patent under the Great Seal of Great Britain, bearing date on
or about the Fifteenth day of July, One thousand seven hundred and sixty-
five, in the fifth year of the reign of His said Majesty, did give and grant
unto me, the said Isaac Fenn, His especial licence, full power, sole priviledge
and authority, that I, the said Isaac Fenn, my exors, adñiors, and assigns,
should and lawfully might, during the term therein expressed, make, use, exer-
cise, and vend, throughout that part of His Majesty's Kingdom of Great Britain
called England, His Dominion of Wales, and Town of Berwick-upon-Tweed,
my NEW-INVENTED PERAMBULATOR OR MEASURING WHEEL OF THIRTY-ONE INCHES
AND AN HALF DIAMETER, WITH A BAR FIXED IN THE CENTER, AND THREE OR FOUR
HANDS TO DENOTE POLES, FURLONGS, AND MILES, TO AN EXACTNESS OF FIVE INCHES,
AND THE WHOLE ENCLOSED IN A WALKING STICK AS A PORTABLE INSTRUMENT FIT
FOR GENTLEMEN AND LADIES TO MEASURE ROADS OR LANDS;" in which said recited
Letters Patent there is contained a provisoe obliging me, the said Isaac Fenn,
by writing under my hand and seal, to cause a description of my said Inven-
tion, and in what manner the same is to be performed, to be inrolled in His
Majesty's High Court of Chancery within four calender months from the date
of the said Letters Patent, as in and by the said Letters Patent, relation being
thereunto had, may more fully and at large appear.

page_text: NOW KNOW YE, that in compliance with the said proviso, I, the said
Isaac Fenn, do hereby declare, that my said new-invented perambulator or
measuring wheel is made and used in the manner following (that is to
say)-
The first motion is a wheel of thirty-one inches and an half diameter, or a
half pole wheel circumference, which the hoop fixes together with studs and
holes. The next is four or eight cross barrs, that fixes to the hoop with
springs. This said wheel runs on the ground; and in the box is a pinion, one
end whereof goes through the center of the said wheel, and with a nutt screws
on fast. The other side the said pinion is of six, which commands a wheel of
twelve; in the said wheel of twelve is a pinion of five, which commands a
wheel of twenty-five; in the said wheel of twenty-five is a pinion of five,
which commands a wheel of forty; in the said wheel of forty is a pinion of
six, which commands a wheel of twenty-four; in the said wheel of twenty-
four is a pinion of eight, which commands a wheel of sixteen, which in one
box makes a revolution of one mile; also in the wheel sixteen is added a
pinion of eight, which commands a second wheel of sixteen; in the said wheel
of sixteen is a pinion of six, which commands the last wheel of twenty-four,
which makes a full revolution of eight miles in the second box. And either of
these two revolutions to answer the aforesaid wheel that runs on the ground,
and also with a walking stick to guide the saine when made use of, and when
not made use of, the machine to take apart and put into a walking stick of
five feet long, or a common length that a gentleman likes to walk with. And
also of the box movement, by leaving out the first pinion of six, and the first
wheel of twelve, and the second pinion five, and the second wheel twenty-five,
and in the place of twenty-five a wheel of sixteen and a wheel of fifteen, and
a pinion of eight to command the aforesaid wheels, which, being added to the
other wheel, makes the said movement to work in a chair by a verge or
pendelum, or spring, to work the same as an inclosed perambulator in a chair,
and as an inclosed perambulator in a walking stick. Also the
division of the plates, as in the margin hereof, by three or four
seperate hands to denote poles, furlongs, and miles, to the
Jongest denomination, and to the shortest the fortieth part of a
pole, which is about five inches. Also, the smallest box is one inch wide, one
inch and half long, and one inch in depth. Also, the box from that size
to be round or square to twelve inches wide, and depth in proportion, and to
contain the same division on the plate. Also, the said box or case may be
made of gold, silver, or brass, or any other mettals or materials, being no
alteration to the aforesaid works. Also, the aforesaid wheels, pinions, and

page_text: frame, or any matters joyned in the said Invention, may be made
steel. I also explain the number of teeth that are cut in the
pinions of my said Invention; first, the different number of teeth
N
+0
8
02
S
in the pinions are six, five, eight; also in the
wheels, is twelve, fifteen, sixteen, twenty-four,
twenty-five, forty. And also may be added
to the aforesaid works a division of the com-
pass and needle, to denote the distance of the
north and south pole, also drawn in the mar-
gin hereof. And also to the aforesaid works
may be added a bell to give warning or strike
at the several distances of polls. furlongs, and
miles.
tness whereof, I, the said Isaac Fenn, have hereunto set my hand
seal, this Seventh day of November, in the sixth year of the
n of our Sovereign Lord George the Third, by the grace of God
Great Britain, France, and Ireland King, Defender of the Faith,
so forth, and in the year of our Lord One thousand seven hundred
sixty-five.
JAMS RISBEE.
AND BE IT REMEMBERED, that on the Seventh day of November, in
the year of our Lord One thousand seven hundred and sixty-five, the aforesaid
Isaac Fenn came before our said Lord the King in his Chancery, and ac-
knowledged 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 in the sixth year of
the reign of the late King and Queen William and Mary of England, and so
forth.
Inrolled the Seventh day of November, in the year of our Lord One
thousand seven hundred and sixty-five.