CERTAIN IMPROVEMENTS IN MACHINERY OR APPARATUS APPLICABLE TO LITHOGRAPHIC AND OTHER PRINTING
Year: 1831

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ADOLPHE
JACQUESSON, of Leicester Square, in the County of Middlesex, Esquire, send
greeting.
WHEREAS His present most Excellent Majesty King William the Fourth,
by His Letters Patent under the Great Seal of Great Britain, bearing date at
Westminster, the Sixth day of July, One thousand eight hundred and thirty-
one, in the second year of His reign, did, for Himself, His heirs and successors,
give and grant unto me, the said Adolphe Jacquesson, His especial licence,
sole privilege and authority, that I, the said Adolphe Jacquesson, my exors,
adziors, and assigns, or such others as I, the said Adolphe Jacquesson, my
exors, admors, or assigns, should at any time agree with, and no others, from
time to time and at all times during the term of years therein expressed,
should and lawfully might make, use, exercise, and vend, within England,
Wales, and the Town of Berwick-upon-Tweed, the Invention of "CERTAIN
IMPROVEMENTS IN MACHINERY OR APPARATUS APPLICABLE TO LITHOGRAPHIC AND
OTHER PRINTING," communicated to me by a certain foreigner residing abroad;
in which said Letters Patent is contained a proviso, that I, the said Adolphe
Jacquesson, shall cause a particular description of the nature of the said
Invention, and in what manner the same is to be performed, to be inrolled in
His said Majesty's High Court of Chancery within six calendar months next
and immediately after the date of the said in part recited Letters Patent, as in

page_text: for the wheels (10, 10, &c.), and consequently the table which carries the
stone or other surface to be printed from. The table (7, 8,) may either
be formed of separate parts or in one casting. (12, 12,) is a rack, affixed on
one side of the table (7, 8,) and by means of the toothed wheel (18), affixed
on the same axes as the toothed wheel (6); the table is moved backwards and
forwards under the printing cylinder. (14, 14,) are framings affixed on the
framings 1, 1, &c., on each side of the machine, by means of screw bolts and
nuts, as represented in the Drawings. (15, 15,) are the bearings of the axis
of the crank handle (16). On the axis (16) there is a pinion (17) affixed,
which drives the toothed wheel (6).. The impression in this machine is given
by means of a cylinder, which I prefer to be cast of cast iron, accurately
turned on its surface, yet the same may be made of any other suitable
material. The axes of the printing cylinder (18) turn in bearings or brasses
on each side of the machine, such brasses or bearings being carried by the
iron straps or loops (29), similarly formed to a stirrup. These straps
(29) are raised or lowered by means of the screws (29), acted on by their
respective nuts (29), and thus the space between the cylinder (18) and the
table (7, 8,) is regulated to accommodate the same to the thickness of the
stone or other surface fixed on the table (7, 8). When the machine is to be
used for printing from a stone having only writing thereon, or when printing
from a form of type, in which so much care is not requisite, and where quick
printing is required, an endless printing blanket or felting (27, 27,) is used.
This endless blanket or felting passes under the printing cylinder (18) and
over the roller (24), the axes of which roller (24) turn in slits or gaps (23) on
each side of the machine, as shown in the Drawing; and the roller (24) is
adjusted by means of the adjusting screws (25, 25,) which support the axes of
that roller (24). The roller (24) is caused to turn by means of the strarts
(26, 26,) which are actuated by means of the printing cylinder (18), and the
printing blanket or felting is kept distended by means of the two rollers (20, 20,)
which are carried in the forked frame (19, 19). The upper parts of the
frames (19) pass through the cross bracing or framing (21, 21,) and are per-
mitted to slide up and down, and they are retained in any position by the
adjusting screws (n, n). It will be seen that the small rollers (20, 20,) turn
on axes in holes drilled in the lower ends of the forked framings (19, 19).
On one of the axes of the roller (5) there is a toothed wheel (28) affixed,
which takes into and drives an intermediate toothed wheel (a), the axis of
which intermediate toothod wheel is affixed in a curved slot formed in the
side framing, by which means this intermediate wheel may be made to accom-
modate the variation of distances between the toothed wheel (28) and the

page_text: toothed wheel (6), which latter is affixed on one of the axes of the printing
cylinder, (18), and that cylinder is driven by the motion given to the roller (5),
such motion being communicated from the toothed wheel (28) to the inter-
mediate toothed wheel (a), and thence to the wheel (b). Pressure is com-
nicated to the printing cylinder (18) by means of levers and weights in the
following manner :-(30, 30,) are two iron loops, which act on the upper
brasses on the axes of the printing cylinder (18); these loops (30, 30,) arc
pressed downwards by means of the levers (34), which pass through the slits or
holes (32), formed in the lower parts of adjusting screws (31, 31). Each
of the levers (34) has a fulcrum (33,) affixed on each side of the machine,
and they are further supported by means of the plates (33), fixed on the side
framings (1, 1,) of the machine. (36, 36,) is another lever, having its fulcrum
at (36), carried by the projecting part of the framing (4); this lever (36) is
brought to act on the ends of the levers (34, 34,) by means of the cross rod or
bar (35), which rests on the ends of the levers (34, 34,) as is clearly shown in
the Drawing. (37) is a weight, and according to the pressure required, the
weight (37) may be moved nearer to or farther from the fulcrum (36), for
the purpose of decreasing or increasing the pressure to the printing cylinder
(18). I would observe, that when quick printing is required, a smaller toothed
wheel (6) may be placed on the axis of the roller (5), but where large and
fine prints are to be taken, then a larger wheel (6) is to be used. The
object of thus changing the wheel (6) is, that when quick printing is
intended, it is desirable to make as many revolutions of the printing cylinder
with as few revolutions of the crank handle; but, on the contrary, when large
and fine prints are to be taken, then a slow motion is desirable, with consider-
able pressure. And I would further observe, that when fine prints are being
taken from off lithographic stones, or from copper or other plates, then, in place
of using the endless blanket or felting, or other printing fabric, I make use of
one or more sheets of smoothly pressed pasteboard, laid on the top of the paper
which is to receive the impression. In using the machine, I carefully fix the
stone or surfaco to be printed from on the table (7, 8), taking care that the
printing surface is truly parallel with the printing cylinder. I then, by hand,
place a sheet of paper on the printing surface, and when the endless printing
blanket is used no sheet of pasteboard is required. The table is then run under
the printing cylinder, and the impression given, which is to be removed, and
another sheet of paper placed on the printing surface, and the table is to be
run back under the printing cylinder.
Having now described the nature of the Invention, and the manner in
which the same is to be performed and carried into effect, I would have it

page_text: understood that I lay no claim to any of the various parts separately; but I do
laim as the Invention the combining of the various parts in the manner above
lescribed.
In witness whereof, I, the said Adolphe Jacquesson, have hereunto set
my hand and seal, this Sixth day of January, in the second year of
the reign of our Sovereign Lord William the Fourth, and in the year
of our Lord One thousand eight hundred and thirty-two.
Inrolled the Sixth day of January, in the year of our Lord One
thousand eight hundred and thirty-two.