MAKING AND CONSTRUCTING TENTS, POLES, AND OTHER MACHINERY, SO AS TO EXPEL AND CARRY OFF NOXIOUS AND CONTAMINATED AIR BY A READIER AND MORE EFFECTUAL VENTILATION THAN CAN BE ACCOMPLISHED BY THE TENTS IN COMMON USE
Year: 1807

page_text: MABERLY'S
SPECIFICATION.
TO ALL TO WHOM THESE PRESENTS SHALL COME, JOHN MABERLY,
of Bedford Row, in the County of Middlesex, Gentleman, sends greeting.
WHEREAS His present Majesty, in and by His certain Letters Patent
under the Great Seal of the United Kingdom of Great Britain and Ireland,
bearing date at Westminster, the Seventh day of March, in the forty-seventh
year of His reign, did, of His especial grace, certain knowledge, and mere
motion, for Himself, His heirs and successors, give and grant unto me, the
said John Maberly, my exors, adiñiors, and assigns, especial licence, full power,
sole priviledge and authority, that I, the said John Maberly, my exors, admors,
and assigns, and every of them, by myself and themselves, or by my and their
deputy or deputies, servants or agents, or such others as I, the said John
Maberly, 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 Invention of "MAKING AND CONSTRUCTING TENTS, POLES, AND OTHER
MACHINERY, SO AS TO EXPEL AND CARRY OFF NOXIOUS AND CONTAMINATED AIR BY A
READIER AND MORE EFFECTUAL VENTILATION THAN CAN BE ACCOMPLISHED BY THE
TENTS IN COMMON USE," within that part of the United Kingdom of Great
Britain and Ireland called England, the Dominion of Wales, and Town of
Berwick-upon-Tweed, in such manner as to me, the said John Maberly, my
exors, aduiors, and assigns, or any of them, in my or their discretion, should
seem meet, and that I, the said John Maberly, my exors, adñiors, 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 hold, exercise, and enjoy the said license, powers, privileges,
and advantages therein-before granted, or mentioned to be granted, unto m

page_text: the said John Maberly, my exors, adiñiors, and assigns, for and during and unto
the full end and term of fourteen years from the date of the said Letters Patent
next and immediately ensuing, and fully to be complete and ended according to
the Statute in such case made and provided; in which said Letters Patent is
contained a proviso that the same should be void unless I, the said John
Maberly, should particularly describe and ascertain the nature of my said
Invention, and in what manner the same was to be performed, by an instru-
ment in writing under my hand and scal, and cause the same to be inrolled in
the High Court of Chancery, within one calendar month next and immediately
after the date of the said Letters Patent.
NOW KNOW YE, that I, the said John Maberly, in pursuance of the said
proviso in the said Letters Patent, do hereby describe and ascertain the nature
of my said Invention, and in what manner the same is to be performed, as
follows, that is to say :-
In the annexed Drawings the same letters denote the same things through-
out. A represents a cap or piece (made in preference of wood) of the form of
a vase, or of any other suitable figure, of which Fig. 1 represents an upright
section, and all the horizontal sections are circular. Fig. 4 represents the
largest horizontal section, which is at or near the bottom of the vase. At
D, D, &c. are perforations, which communicate obliquely with another central
perforation E, E, which is open at bottom, but does not proceed through the said
vase at top. At B, B, and C, C, are certain sloped or conical surfaces
surrounding the neck of the vase.
Fig. 2 represents, in a vertical section, the manner in which I fit up my tent
poles. The external dark line represents an hollow pipe or cylinder of plate iron
or other suitable metal, and the internal faintly shaded part represents a wooden
tube or pipe, bored not quite through at the bottom near N, where it is
secured in the said pipe or cylinder by a pin, or by any other proper fastening.
At II, H, are holes which pass through both the wood and the metal, and com-
municate with the interior space G; and the lower part I of the metallic
cylinder (where there is no lining of wood) is fastened by pins or otherwise
upon the part K of the tent pole K. L, Fig. 3.
Fig. 5 shews the upper part of a tent of the usual conical figure. The
canvas of the same is securely fastened upon the conical surface B, C, (Fig. 1)
of the neck of the vase, and a piece of leather M is firmly fixed below the
projecting part C, in order to cover and defend the place of junction from the
weather. The tent pole L being fixed in the socket I is introduced by its upper
part G into the cavity E, which is lined with metal where it bears against the
shoulder F, F, and supports the tent. Q, Q, represents part of the canvas,
which may be supposed to be continued to complete the tent. In the situation

page_text: here described it will be easily understood that the heated air within the tent
will rise to the vertex or most elevated part of the said tent, where it will pass
out through the holes H, H, and thro' E and D, D, into the open air, and that
by these means the ventilation will be promoted and kept up with more or less
rapidity, in proportion to the elevation of temperature, (that is to say,) in pro-
portion to the necessity which there may be that the tent should be ventilated.
And I do hereby further declare, that in some cases I find it desirable to
make, and I do accordingly make, my vase with a neck proceeding only to
C, C, and that I do in such cases fasten the tent cloth to a separate piece or
ring by itself, and the vase is not then attached or fixed to the cloth, as before.
And I do also fix or make a shoulder or pin or perturberance at or near P
upon the metallic pipe or cylinder, for the purpose of supporting the tent by
the said ring instead of against the face or shoulder F, F, as herein-before
first described.
And in the last described method of constructing and fitting up tents
according to my said Invention, the tent pole or poles is or are passed through
the said ring, and the vase or vases A, A, is or are put on afterwards. And,
further, that in the construction of officers' tents or such as are not conical, I
do pass the tent poles, fitted up as aforesaid and provided with the said
shoulder pin or protuberance at P, thro' two metallic rings which are severally
fixed and secured at the ends of the ridge pole.
In witness whereof, I, the said John Maberly, have hereunto set my
hand and seal, the Fourth day of April, in the forty-seventh year of
the reign of His Majesty George the Third, by the Grace of God of
the United Kingdom of Great Britain and Ireland King, Defender of
the Faith, and in the year of our Lord One thousand eight hundred