CERTAIN IMPROVE- MENTS IN PRINTING PRESSES
Year: 1817

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
CLYMER, late of Pennsylvania, but now of Cornhill, in the County of
Middlesex, Mechanic, send greeting.
WHEREAS His most Excellent Majesty King George the Third did,
5. by Lis Letters Patent under the Great Seal of the United Kingdom of
Great Britain and Ireland, bearing date at Westminster, the First day of
November, in the fifty-eighth year of His reign, give and grant unto me, tho
said George Clymer, my exors, adiñiors, and assigns, His special licence, full
power, sole privilege and authority, that 1, the said George Clymer, my exors,
adiñiors, and assigns, should and lawfully might, during the term of years
therein mentioned, make, use, exercise, and vend, within England, Wales,
and the Town of Berwick-upon-Tweed, my Invention of "CERTAIN IMPROVE-
MENTS IN PRINTING PRESSES;" in which said Letters Patent there is contained
a proviso that if I, the said George Clymer, shall not particularly describe
and 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 and
seal, and cause the same to be inrolled in His Majesty's High Court of
Chancery within six 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, shall utterly cease, determine, and
become void, as in and by the same, relation being thereunto had, may more
fully and at large appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
George Clymer, do hereby declare that the nature of my said Invention, and
in the manner in which the same is to be performed, are particularly described
and ascertained (that is to say):-

page_text: NOW KNOW YE, that in compliance with the said proviso, I, the said
George Clymer, do hereby declare that the nature of my said improve-
ments, and in the manner in which the same are to be carried into effect, are
fully shewn and described in the two Drawings affixed to this Specification,
and in the references thereto as follows, that is to say:-
In Drawing No. 1, Fig. I is a side view of the press; Fig. 2a front view
of the same; Fig. 3, part of the press frame on the opposite side to Fig. 1;
Fig. 4, an horizontal section of the press frame at the red dotted line in
Fig. 1, shewing the parts below the said line; Fig. 5, an horizontal view
of the press, the counterbalance weight S being omitted; Fig. 6, the under
side of the sliding carriage or table; Fig. 7, the side view of the same. The
same letters refer to the same parts of the press in all the Figures both of this
Drawing and of No. 2. A, A, &c., is the cast-iron frame of the press
standing upon its four legs; B, the first or great lever; C, the axis or fulcrum
upon which the great lever B moves; D, D, the two-connecting rods which
unite the great lever. B. with the second lever E; E, E, the second, lever
turning on an axis at F; G, the rod which connects the second lever. E
with the third lever or handle of the press H; H, the third lever or handle
turning on an axis at I; J,, the horizontal and vertical joints in the rol G
which connects: the second lever E with, the, third lever H or handlo of the
press. turning on an axis in the latter at K; L, the square upright bolt or
slider of the press connected with the first lever B by the pivot or trunnion M;
N, N, the two guides which keep the bolt L upright, and which are attached
by screws to the sides of the press frame A, A; O,. the platten which is hung
to the, lower end of the bolt L by the four adjusting, screws P, P, &c., The
lower end of the bolt L is made spherical, and acts upon a flat, plate on the
upper side, of the platten O; Q; the counterbalancing lever of the first or
great lever B and platten O turning upon pivots at R. which lie in two
semicylindrical grooves made in the top of the press frame. A, and carrying
upon it a sliding or adjusting weight S.; T, the link or bridle which. connects
the counterbalancing lever Q with the great lever B; its upper part is, made
cylindrical and turns in a semicylindrical, groove made. across, the end of
'the counterbalancing lever Q for that purpose, and it has a stem which, passes
through a hole in the end of the great lever B, under which, it is, secured, by a
screwed nut; U, U, a bar which is immoveably fixed, to the second lever. E by a
stem V, and carries a sliding counterbalancing weight W; X, the ribs resting on
the press frame A, A, which has two projecting parts on each side, and attached
by four screws. On these ribs the table Y slides, and they are supported a
their ends the farthest from the press frame on an iron pillar; Y, the sliding
carriage or table on which the form is placed, and which, is furnished, in the

page_text: usual manner with the tympans and frisket. On the under side of the table Y
are two ribs that extend almost the whole length of it, and form slides which
run on the raised flat surfaces in the oil reservoir that are cast in the upper
surfaces of the two ribs X, X, Fig. 4; Z, the winch and barrel or rounce
upon which the three girths or webs revolve to run the table Y into or out of
the press as usual. A cast-iron bar a, a, shewn in part and by dotted lines in
Fig. 2 behind the great leaver B, and seen in its place in Fig. 5, extends across
the
press frame A, A, to keep the parts from inclining towards cach other.
In Drawing No. 2, Fig. 1, B is the first or great lever viewed in front; c, the
hole through which the pin or bolt passes, on which it moves as a fulcrum ;
M, the end of the pivot or trunnion by which it is connected with the upper
end of the slides or bolt of the press L; d, the hole through which the pin
or bolt passes which unites the lever by means of the two connecting rods
D, D, with the second lever E; t, the hole through which the stem or shank
of the link or bridle T passes, which unites this lever with its counterbalancing
lever Q (scen in Drawing No. 1); over the hole c is shewn the crescent
edgewise (the front view of which is shewn in Drawing No. 1 at Fig. 3)
between the hours of which the longer arm of the counterbalancing lever
(Q, No. 1) rests when the platten O is elevated. Fig. 2, L is the square
slider or bolt of the press; m, m, are the couplings (shewn edgewise) on the
upper end of it, with two of the four screws and nuts, by means of which it is
connected with the two necks or pivots of the trunnion M of the first or great
lever B. Its rounded part below acts, as before described, upon the flat
plate o in the middle of upper side of the the platten of the press O. Fig. 3,
the upper side of one of the loose parts of the couplings m, with two square
holes in it for the shanks of the screws to pass through; Fig. 4, the upper end
of the slider or bolt L (shewn by the dotted lines), with the semicylindrical groove
across it, in which the pivot or trunnion M of the great lever B lies, and four
holes for the screws of two couplings m, m, to pass through. Fig 5, the under
side of one of the two loose parts of the couplings m, m, with a semicylindrical
groove in it; Fig. 6, a square flange at the lower end of the slider or bolt L
(shewn in section), with four holes in it for the four screws P, P, &c. to pass
through, which connect it with the platten O; Fig. 7, the bolt or slider (shewn
in the opposite direction to Figure 2), in which the couplings m, m, are
shewn in front with two of screws and one of the nuts which bind them
together, (the other nut being shewn at Fig. 8). The two guides N, N,
between which it slides, are also shewn, one of which is seen screwed to the
press frame A, A; D, one of the two connecting rods which, by means of
pius or bolts passing through its upper and lower holes d, d, unite the great

page_text: lever B with the second lever E. E, E, the second lever turning upon an
axis at F, and having the bar U, U, affixed to it at V by means of a square
stein passing through it, secured by a screw, and carrying a sliding counter-
balance weight W, which co-operates with the weight S to elevate the parts
that are depressed in producing the impression, and at j, a hole through which
a pin or bolt passes, which connects it with the third lever H which moves
upon the bolt I as a centre. To that side of the press frame A is also screwed
a bracket n, having a stop screw in it to adjust the power of the press, as
described hereafter. Fig. 9, D, D, the two connecting rods, through the
lower ends of which passes the pin or bolt d, d, which forms the axis of a
vertical joint with the second lever E, E, & having at their upper ends a
similar bolt or pin d, d, which forms a joint and connects them with the
great lever B. U, U, the counterbalance bar on which the weight W slides,
as described in Fig. 7; Fig. 10, O, the platten with its flat top o upon which
the rounded end of the bolt or slider of tho press L, Figs. 2 and 7, acts;
P, P, two of the four adjusting screws which unite it with the slider L. The
heads of these screws are hooked, and catch in recesses cast in the top of the
platten O for that purpose, the screws being prevented from coming out of
the recesses by the holes into which they fit in the flange (Fig. 6) at the
lower end of the slider or bolt L; Figs. 11 and 12 two of the nuts of the
screws P, P; Fig. 18, A, A, part of the press frame; N, N, the two guides
between which the slider L moves; O, the platten seen from above; P, P,
two of the four screws and nuts which connect it with the slider L; H, the
third lever or handle of the press turning on its fulcrum at I, and joined to
the second lever E by the rod G being screwed into the female screw, which
forms a part of the horizontal joint through which a pink passes to connect
it to the vertical joint j; g is a nut which binds the male and female screws
tight, and prevents them from wearing when in action; n is the stop screw;
Fig. 14, B, B, the under side of the great lever, shewing the pivot or trunnion
M which is cast with it, and to which the slider L is coupled. The dotted
lines at c shew the hole through which the pin or bolt passes, on which the
lever moves, and those at d the hole to receive the pin which connects it with
the two rods D, D. The square hole t is for the stem of the link or bridle T
to pass through. This press is made of cast and wrought iron, and derives its
power-multiplying principle from the component parts thereof being so shaped,
connected, combined, and arranged, that they are, by the moving power applied
to the handle of the press II, brought from the various angles of inclination
that they form between right angles when the press is at rest, to parallels and
right angles when the press is in action. The handle of. the press is.

page_text: brought into a right-angled position with the front of the press frame A, A,
as shown in Fig. 13 of Drawing No. 2, and another part of the third lever or
handle H with the connecting rod G is brought parallel with the front of the
press frame A, A, and thus brings the second lever E to a right angle with
the connecting rod G, and into contact with the adjusting scrow n, also the
rods D, D, into a situation nearly parallel to the lever E, and at right angles
with the first lever B. This is shewn, as far as concerns the connecting rods
D, D, and the second lever E, in Fig: 7 of Drawing No. 2. These said
Drawings Nos. 7 & 13 also shew by means of the dotted lines the situations
of these various parts when the press is at rest and the platten is raised. The
stop screw n, Fig. 13, is also shewn in contact with the lever H or handle
of the press by which the power or force of the press is in part regulated and
adjusted, so as to be adapted to print the smallest cards or the heaviest forms,
reducing the length of the connecting rod G by means of the screw which
unites it with the horizontal joint, also encrcases the power of the press, and
which continues to encrease until the centres of the two bolts d, d, which, as
aforesaid, connect the rods D, D, with the second lever E, and the first lever B
and the bolt j, which forms a part of the vertical joint j, are all brought into
a straight line with the axis of the bolt F, which is a fixed point; but the
heaviest forms do not require the axis of the bolt j to be brought nearer than
from two inches to one inch of the above position. The additional counter-
balancing weight W is brought into action when the other weight S is
rendered inactive by the centres of the bolts which unite the great lever B
with the second lever E, and the connecting rod G with the third lever or
handle of the press H being brought as aforesaid into a straight line; the
bar U, U, is then elevated, and the weight W acts with its greatest power to
raise those parts of the press which, as aforesaid, are depressed in producing
the impression. The press is drawn with all its parts complete, for the sake
of perspicuity, but I do not mean to claim as my Invention the platten O, the
sliding carriage Y with its tympans and frisket, nor the winch and barrel or
rounce Z on which the three girths or webs revolve, nor any other parts
thereof which are already in use; but I do hereby claim the new arrange-
ment and combination of those parts from which this press derives its superior
eflect.
In witness whereof, I, the said George Clymer, have hereunto set my
hand and scal, this Twenty-eighth day of April, in the year of our
Lol One thousand eight hundred and eighteen.
GEORGE (L.S.) CLYMER.

page_text: AND BE IT REMEMBERED, that on the Twenty-eighth day of April,
in the year of our Lord 1818, the aforesaid George Clymer came before our
said Lord the King in His Chancery, and acknowledged 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 for that purpose.
AND BE IT REMEMBERED, that on the Twenty-eighth day of April,
in the year of our Lord 1818, the aforesaid George Clymer came before our
said Lord the King in His Chancery, and acknowledged 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 for that purpose.
Inrolled the Twenty-eighth day of April, in the year of our Lord One
thousand eight hundred and eighteen.