Year: 1888

page_text: 1, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co., Patent Agents,
Southampton Buildings, in the County of Middlesex, do hereby declare the nature
of this invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
This invention relates to that class of printing presses in which the impressions are
made upon a continuous web, which may afterwards be cut and folded in any suitable
manner.
One object of the present invention is to provide a simple device for reversing the
movement of the continuous web, after it has been printed on one side, in order that
it may be again subjected to the action of the printing mechanism and printed on the
other side or "perfected."
Another object of the said invention is to provide a device for this purpose in which
the blank or imprinted surface only, of the web, shall be subjected to contact and in
which the friction of the travelling strip shall be reduced to the minimum, thereby
wholly obviating the danger of offset from the printed surface, and the risk of tearing
the paper through rapid travel of the web.
A further object of the invention is to provide an extremely simple, adjustable and
comparatively inexpensive device capable of attachinent, without change, to any form
of printing press in which continuous web printing is practicable, and adapted to turn
or reverse the direction of movement of the paper as it comes from the printing
mechanism, without subjecting the printed surface to contact of any kind.
The invention consists in the several novel features of construction and new
combinations of parts hereinafter fully set forth.
In the accompanying drawings.
Figure 1 is a side elevation partly in section, of a portion of a printing mechanism

page_text: Figure 2 is a plan of the parts shown in Figure 1.
Figure 3 is a detail perspective view illustrating my invention.
Figure 4 is a view showing a modification; and
Figure 5 is a view of a further modification.
In the said drawings the reference numeral 1 denotes the mechanism for continuous
web printing which may be of any suitable form and which for the sake of convenience
is shown as a single bed and a single impression cylinder. The web is shown as
taken from a roll 2, whence it passes between the bed and the cylinder, a binding
roll 3, being employed to hold the web against the surface of the cylinder and give
sufficient frictional contact to prevent slipping and cause the web to be presented
smoothly to the type.
Upon the other side of the impression cylinder I mount a suitable support 4,
which in this instance is a T-piece of metal, bolted to the press. The arm 5, of
this support is slotted as shown at 6, Figures 1 and 2, and in the slot is mounted
a bracket 7, fastened at any suitable point by a set screw 8.
Upon the bracket 7 is pivotally mounted a plate 9, baving a curved slot 10,
through which passes a set screw 11, tapped into the bracket.
Upon the upper end of the plate 9, is rigidly mounted the turning or reversing
device 12, baving substantially the form shown in Figures 1 and 3, flattened
upon one side and having the flattened side prolonged and provided with a curve 13.
This device is mounted upon the plate 9, its fulcrumed side being downward or
adjacent to the plate, and its base adjacent to the impression cylinder. The flattened
side of the reversing device forms an angle with the plate, viewed in side elevation,
but this arrangement is not absolutely essential provided that the adjustment is such
that a line drawn tangent to the lower side of the impression cylinder shall coincide
substantially with the flattened side of the cone, as shown in Figure 1.
The web passing from the delivery roll 2, is carried over the tension and binding
roll 3, thence under the impression cylinder. From this point it rises to the
flattened surface of the turning and reversing device 12, on one side thereof, winds
over the upper surface thereof and down under the other side of the flattened
portion, whence it passes over the impression cylinder and is carried under the
same to print, the other side. It will be seen from Figures 2 and 3, that the web
passes first under one end of the impression cylinder, and upon its return under
the other end. But it is evident that the web may be returned and printed by any
other suitable mechanism. In the drawings I have indicated a form of press in which
book printing may be accomplished, two pages of the book being printed on one side
of the web, which, upon its return, is perfected by the impression of the two remaining
pages on the reverse side, and directly opposite those first printed. In order to
provide for proper register, the reversing device 12, is rendered adjustable by means
of the bracket 7, moving in the slot 6. The pivotal adjustment of the plate 9, is to
permit the operator to bring the flattened side into line with a tangent to the cylinder,
whenever the bracket 7 is adjusted toward or from the printing mechanism.
In Figures and. 5 I have shown modified' forms of the same invention, Figure 4
being essentially the same as Figure 3, save that the flattened side of the cone is
divided and the two parts bent up into parallelism, thereby bringing the two portions
of the web into the same line and completely turning it. This form may be used
upon a, color press or upon a perfecting press where a type cylinder is arranged between
two impression cylinders, one above and one below the same.
Figure 5 also shows a device in which the paper is turned and brought back in the
same line. In both Figures 4 and 5 the turner is formed from a strip of sheet metal.
In Figure 4, this strip,is first turned at two points 14, at right angles to itself, thereby
bringing the ends 14 into parallelism and' into substantially the same plane. It is
then curved at 15, intermediate of these ends, until the ends 14, are brought into
parallel planes one above the other.
In Figure 5, the strip is simply twisted, twice, and beyond the second twist is bent
upon itself and brought back beneath the twists. In all the forms shown and parti
cularly in Figure 5, the metal assumes the natural position, the strip being simply

page_text: twisted and bent and following in each portion the course naturally pursued by a
paper strip to which the twist is applied. The web, therefore, in following the strip
moves in its natural curves and as long as it is guided to and from the metal with
tolerable accuracy, it will run smoothly and truly and with little friction.
It will be noted that the web may, if desired, be taken from the turning device at
different points and carried away at various angles. For example, in Figure 4, the
paper may leave the turning device at the curve 15, and be carried straight down-
ward. Or it may be carried completely around the curve 15, and leave the metal at
the point where it reaches the second curve 14, being carried away horizontally and
at right angles to the ends 14.
I make the cone shown in Figures 1 to 3, of sheet metal for the sake of lightness,
though it may be made of any other material and be solid.
It will readily be seen that each form shown is or may be constructed by simply
bringing the ends of a strip of metal around in the same direction and into close
juxtaposition.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed as communicated to me
by my foreign correspondent I declare that what I claim is :-
First. In a printing press the turning and reversing device, the same consisting of
a strip of sheet metal, having its ends bent or curved into the same direction and
brought into close juxtaposition the metal being allowed to assume its natural curves,
substantially as described.
Second. In a printing press, the combination with the printing mechanism, of a
web reversing device consisting of a strip of sheet metal bent or curved between its
ends to bring them into the same direction, substantially as described.
Third. In a printing press, the combination with the printing mechanism, of a web
turning and reversing device consisting of a strip of sheet metal curved or bent
between its ends to bring the latter into parallelism and invert the surface of said
strip, substantially as described.
Fourth. The combination with a printing mechanism, of a web reversing device,
consisting of a strip of sheet metal having its ends curved into parallelism, thereby
presenting a substantially conical form between the ends, and mounted upon a longi-
tudinal and pivotal adjustable support, substantially as described.
Fifth. The combination with a printing mechanism, of a web turning and reversing
device consisting of a strip or sheet of metal having its ends bent or curved into
parallelism and curved or bent through an arc of 180 degrees between the parallel
ends to bring the intermediate portion of the strip into two parallel portions at right
angles with the parallel ends, substantially as described.
1000
Dated uns day or may
1034
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.