Ax ENTIRELY NEW METHOD OF MAKING SMALL PERSPECTIVE GLASSES, WITH MATHE- MATICAL & OTHER INSTRUMENTS AND TWEES IN ONE AND THE SAME CASE, BOTH- WITH AND WITHOUT MISCROCOPES OF MAGNIFYING GLASSES THEREIN, IN A VERY PORTABLE, NEAT, & ORNAMENTAL MANNER, WHICH, BY REASON OF THEIR SIXE, WOULD BE VERY CONVENIENT AND USEFULL TO HIS SAID MAJESTIE'S SUBJECTS, & IN MAKING OF WHICH GLASSES A CONSIDERABLE NUMBER OF OPTICIANS AND OTHER HANDICRAFT WORKMEN WOULD NECESSARILY BE EMPLOYED
Year: 1749

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
RIBRIGHT, of the Parish of Saint Lawrence Mildred, London, Optician, send
greeting.
WHEREAS His most Excellent Majesty King George the Second, by His
Letters Patent under the Great Seal of Great Britain, bearing date at West-
minster, the Seventh day of February, in the twenty-second year of His reign
(reciting that whereas I, the said Thomas Ribright, had, with great labour
and pains, and at a considerable expence, found out and invented "Ax
ENTIRELY NEW METHOD OF MAKING SMALL PERSPECTIVE GLASSES, WITH MATHE-
MATICAL & OTHER INSTRUMENTS AND TWEES IN ONE AND THE SAME CASE, BOTH-
WITH AND WITHOUT MISCROCOPES OF MAGNIFYING GLASSES THEREIN, IN A VERY
PORTABLE, NEAT, & ORNAMENTAL MANNER, WHICH, BY REASON OF THEIR SIXE,
WOULD BE VERY CONVENIENT AND USEFULL TO HIS SAID MAJESTIE'S SUBJECTS, & IN
MAKING OF WHICH GLASSES A CONSIDERABLE NUMBER OF OPTICIANS AND OTHER
HANDICRAFT WORKMEN WOULD NECESSARILY BE EMPLOYED"), did give and grant
unto me, the said Thomas Ribright, my executors, admors, and assigns, His
especial licence, full power, sole priviledge & authority, that I, the said
Thomas Ribright, my executors, admors, & assigns, & every of them, should
& lawfully might, for and during the term of fourteen years next ensuing the
date of the said Letters Patent, make, use, exercise, & vend my said Invention
within England, Wales, & Town of Berwick-upon-Tweed, in such manner
as to me, the said Thomas Ribright, my executors, admors, & assigns, or any
of them, should seem meet; in which said Letters Patent there is contained

page_text: a provisoc obliging me, the said Thomas Ribright, particularly to describe &
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 & seal, to be
inrolled in His said Majesty's High Court of Chancery within four calendar
months next and inediately ensuing the date of the same Letters Patent, as
in & by the said Letters Patent, relation being thereunto had, may more fully
and at large appear.
NOW KNOW YEE, that in complyance with the said proviso, I, the said
Thomas Ribright, do hereby declare that the said Invention doth consist of
the particulars and is to be performed in the manner described in the Plan
hereunto annexed, and the explanation thereof hereafter written (that is to
say):-
The outside case, and the severall parts thereof, and the instruments or
twees therein contained, are to be made of gold, silver, brass, steel, or any
other metal, or the whole or part of the outside case may be made or covered
with shagreen, fish skin, or leather, with rims & hinges of gold, silver, or
other metal, or may be sett or inlaid with pearl, jewels, or any sort of pre-
cious or curious stones. The Figure A, a, is the perspective glass as it is to
1 is an eye glass,
be seen thro', having both the sliders out or sett open.
& 2 is an object glass. b, b, are the heads in which the said glasses are sett
or fixed. C is the joynt or shutting of the case, which may be drawn out
at pleasure to adjust it to the sight. The Figure Q is the same case with the
object end open in its proper position when used for a miscrocope. The
Figure B, B, represents the body of the said case without the top, which
draws off at the said joynt or shutting C, shewing the spaces wherein the
instruments hereafter described or mentioned are to be contained or placed,
in the center whereof is the aperture of the eye stop, marked e, and in the
:bottom or lower end thereof is the said object glass. E is the neck of the
said case which the said top D slides upon. The Figure D represents the
top drawn off at the joint C aforesaid, wherein at the upper end thereof the
said eye glass is fixed. The instruments to be placed round the aperture
of the eye stop aforesaid are, F, a penknife; G, a six inch rule; H, a pair
of compasses or dividers; I, a pair of scissors; K, a pen & pencil; L, a
bodkin & ear picker; M, a pair of knippers with a file; all or any of which
said instruments, marked F, G, H, I, K, L, M, may be changed or omitted,
& mathematical or other instruments for twees are to be placed in their stead
at pleasure. N is the slider of the microscope, with three magnifiers fixed
therein, marked f, g, h. O is an instrument to fix objects upon to be viewed
thro' the microscope, being a pair of forceps at one end thereof, & a fork

page_text: at the other end thereof. P is the stem whereby it is to be set or fixed in
any of the four holes marked p, in the microscope Q. In using the said
Invention for a microscope, the object end of the said case is a lid, to be
opened with a hinge after the manner of a snuff box lid, as in the said
Figure Q On the inner side of the said lidd is fixed a silver concave
speculum, for reflecting light upon opake objects held in the forceps, or stuck
on the fork of the said instrument O, when fixed by the said stem in any of
the aforesaid holes p. r, r, is an oblong hole or slit in the case under the
said hinge, and in the said hole or slit is a small button that slides therein,
& being thrust upwards towards the said hinge, carries up the head S, T1, T2,
which said head, so carried up, being drawn from the said lidd, slides intirely
off together by means of the two springs t, t, fixed on each side of a dovetail,
which dovetail slides in a groove f, f, in the said case or Figure Q, and the
said head so sliding off together contains the parts represented by the
Figures S, T 1, & T 2. The Figure S screws off from T2 ats, the said T2
being only the reverse side of T1. The aforesaid bead b, in which the said
object glass is fixed as aforesaid, is to screwed off from the outside of the
said lidd, and the said peice S is to be screwed into the place of the said head
so to be screwed off. Into the slitt or groove 3, 3, in the said peice S, is to
be thrust the said slider N, containing the said three magnifiers, thro' either of
which said magnifiers is to be viewed any object held by the said forceps, or
stuck on the said fork, when placed by the said stem in either of the said
four holes p, the
the magnifier 9 being greater than the magnifier f, and lesser
than the magnifier h. The four spaces marked a in the said case or Figure Q,
are four little boxes or repositories for small objects, that the user of the said
Invention may chuse to preserve.
In witness whereof, I, the said Thomas Ribright, have hereunto sett my
hand and seal, the Thirtieth day of May, in the said twenty-second
year of the reign of His said Majesty King George the Second,
and in the year of our Lord One thousand seven hundred and forty-

page_text: AND BE IT REMEMBRED, that on the said Thirtieth day of May, the
aforesaid Thomas Ribright came before our Lord the King in His Chancery, and
acknowledged the aforesaid Writing, and all and every thing therein contained
and specified, in form above said. And also the said Writing was stamped
according to the Act of Parliament made in the sixth year of the reign of the
late King William and Queen Mary, and so forth.
Inrolled the said Thirtieth day of May, in the said twenty-second year of
the reign of His Majesty King George the Second.