A NEW METHOD OF ORNAMENTING GLASS BY A COMPOSITION OF COLOURS OR MATERIALS IMPRINTED OR MADE UFON THE GLASS, BY MEANS OF COPPER OR OTHER PLATES AND WOODEN BLOCKS OR CUTTS
Year: 1781

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, HENRY
BAKER, of Liverpool, in the County of Lancaster, Enameller, sends greeting.
WHEREAS the said Henry Baker did, by his Petition, humbly represent
unto His present most Excellent Majesty King George the Third, that he, the
Petitioner, had, by great application and study, invented "A NEW METHOD OF
ORNAMENTING GLASS BY A COMPOSITION OF COLOURS OR MATERIALS IMPRINTED OR
MADE UFON THE GLASS, BY MEANS OF COPPER OR OTHER PLATES AND WOODEN BLOCKS
OR CUTTS," and which would be of public utility, and therefore the said
Petitioner prayed that His said Majesty would be pleased to grant unto him,
the said Petitioner, his executors, administrators, and assigns, His Royal
Letters Patent, under His Great Seal of Great Britain, for the sole
making and vending the said Invention within that part of Great Britain
called England, His Dominion of Wales, and Town of Berwick-upon-Tweed,
for the term of fourteen years; and His said Majesty, being willing to give
encouragement to all arts and inventions that might be for the public good,
was graciously pleased to condescend to the Petitioner's request, and did there-
fore, by His Royal Letters Patent, bearing date at Westminster, the Twenty-
fifth day of June, in the twenty-first year of His reign, of His especial grace,
certain knowledge; and meer motion, for Himself, His heirs and successors,
give and grant unto the said Henry Baker, his executors, administrators,
and assigns, his especial licence, full power, sole priviledge and authority,
that he, the said Henry Baker, his executors, administrators, and assigns,
and every of them, by himself and themselves, or by his and their deputy or
deputies, servants or agents, or such others as he, the said Henry Baker, his
executors, administrators, or assigns, should at any time agree with, and no

page_text: others, from time to time, and at all times thereafter, during the term of
years thereby expressed, should and lawfully might make, use, exercise, and
vend, his said Invention within that part of His Kingdom of Great Britain
called England, His Dominion of Wales, and Town of Berwick-upon-
Tweed, in such manner as to him, the said Henry Baker, his executors,
administrators, and assigns, or any of them, should in his or their discretions
seem meet; and that he, the said Henry Baker, his executors, administrators,
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, privi-
ledges, and advantages therein-before granted or mentioned to be granted
unto the said Henry Baker, his executors, administrators, 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
compleat and ended, according to the Statute in such case made and provided;
in which said Letters Patent is contained a proviso, that if the said Henry
*Baker should not particularly describe and ascertain the nature of his said
Invention, and in what manner the same was to be performed, by an instru-
ment in writing under his hand and seal, and cause the same to be inrolled
in His said Majesty's High Court of Chancery within four calendar months
'next and immediately after the date of the said Letters Patent, that then the
said 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 any wise notwithstanding, as in and by
the said Letters Patent, referrence being thereunto had, may more fully and
at large appear.
NOW KNOW YE, that in compliance with the said proviso, he, the said
Henry Baker, doth hereby describe and ascertain the nature of the said
Invention, and in what manner the same is to be performed, as follows, that
is to say:
The first process, or preparation of ingredients for ink No. 1: Take one
gallon and half of linseed oil, one pound of umber burnt, and half a pound of
amber. Boil these till of a proper consistence. This preparation must be
thinned for use with oil of turpentine. No. 2, essential oil or balsam of amber.
3, Venice turpentine. 4, for colours, gold dissolved in aqua regia, and precipi-
tated with tin. No. 5, silver dissolved in aqua fortis. No. 6, tin calcined to
ashes. No. 7, copper calcined. No. 8, copperas or vitriol of iron calcined.
No. 9, white lead. No 10, borax. No. 11, cobalt. No. 12, flint calcined-and
ground. No. 13, antimony calcined. No. 14, umber calcined to blackness,

page_text: No 15, white flux composed of one part borax and two parts flint glass.
No. 16, yellow flux, composed of three parts white lead and one part flint
calcined.
Second process for compounding colours: Black for printing; A, three
ounces of Number 14 and one ounce of Number 10. Red (B), three ounces
of Number 16, and one ounce of Number 8. Purple (C), six ounces of
Number 16, and half an ounce of Number 4. Blue (D), one part of Number 11
and three parts Number 15. Orange (E), one part Number 8, one part
Number 13, and three parts Number 16. Dry black (F), one ounce of
Number 14, and half an ounce of Number 9 or 10. Green (G), one part
of Number 7, one part Number 12, and seven parts of Number 9. Yellow (H)
one part of Number 5, No. 6, or No. 13, and seven parts of Number 16.
Rose colour (I), one part of Number 4, and sixteen parts of Number 15...
Third process, or application of coloured impressions by means of copper
plates on glass, which plates may be either engraved, scraped, etched; or
otherwise wrought. (K) When the glass is cut to the size intended, bed it upon
a block with putty, then in a tea-cup mix one part of Number One with one
part Number Two well together; fill the copper plate with this ink; clean it
as the printers do, having prepared it as follows:-
Fourth process, or application of impression for colours on glass :-(L) Take
one pounds of isinglass, one pound of glue, melt these together in water over
the fire to such a consistence that when poured out upon a glass and cold, it
will leave it. Cutt off a piece the size of the copper plate, put it even upon
your plate, it being before charged with ink, and clean, press it equally hard
with a cushion of leather, then take it off and put it upon the glass intended
to be printed, and squeeze it on in the same manner; and so will the impres-
sion be made upon the glass; when, having the colours intended to usė ready,
dip a little cotton in them, and apply it to the impression on the glass, and it
will take a sufficient quantity for burning in such a furnace and such a degree
of heat as is necessary for such glass.
Fifth process, for application of impressions of colours on glass :-(M) Take
a sheet of thin paper,, and having dissolved some gum arabick in water,
spread it with a pencil on one side of the paper; let it dry; then take one part
of Number Two and one part of Number Three for ink; put the copper plate
on a charcoal fire or stove to warm, and into this ink put such a colour as
you please to print with, and rub it into the plate; and clean it well as printers
do. Then put the plate with a gummed paper on it through a rolling press;
take it off the plate and put it on the glass; rub it with flannel to fix it on
the glass, then soak it in water, and the whole impression will quit the paper,
and be left on the glass, which burn as above."

page_text: Sixth process, of applying impressions of colours on glass:-N, Take the
ink, K, Number One and Number Two mixed, filling the copper plate in the
usual manner with it, having papers steeped all night in water. Warm the
plate, and the paper being in proper order, put it on, and pass it through a
rolling press; then take off the paper and put it on the glass; put another
piece of dry paper on that, and with a steel burnisher rub it well equally; then
apply the cotton dipped in such colour as is chosen, as before at L.
Seventh process (0), another method of producing a different effect and
more expeditious:-Take a block of wood or plate of tin or any other metal,
cut or engraved, or otherwise wrought with any device. The ink ready pre-
pared, as at K or M, baving two bosses, such as the letter printers use, with
which charge the block or plate; then take off the impression with paper,
and put it on the glass in the manner as before directed. (Note.) If all the
variety of colours the antients used is wished, have a stencil cut, through
which introduce such colours as are desired after the manner of the paper
stainers.
In witness whereof, the said Henry Baker, hath hereto set his hand
and seal, the Thirteenth day of October, One thousand seven hundred
and eighty-one.
AND BE IT REMEMBRED, that on the Thirteenth day of October, in
the twenty-first year of the reign of His Majesty King George the Third,
the said Henry Baker came before the said Lord the King in His Chancery,
and acknowledged the Instrument aforesaid, and all and every thing
therein contained and specified, in form above written. And also the
Instrument aforesaid was stamped according to the tenor of the Statutes made
in the sixth year of the reign of the late King and Queen William and Mary
of England, and so forth, and in the seventeenth year of the reign of His
Majesty King George the Third.
Inrolled the Twentieth day of October, in the twenty-first year of the
reign of His Majesty King George the Third, and in the One
thousand seven hundred and eighty-one.
year