mprovements in Folding machines.
Year: 1898

page_text: Date of Application, 13th Dec., 1898-Accepted, 4th Mar., 1899
mprovements in Folding machines.
I, FREDRICK HJALMAR WENDT, of 816, French Street, in the City of Erie, and
State of Pennsylvania, United States of America, Machinist, 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 double folding machines and consists in certain
improvements in the construction thereof, as will be hereinafter fully described
and pointed out in the claims.
The invention is illustrated in the accompanying drawings, as follows:-
Fig. 1, shows a section on the line 1-1 in Figures 2 and 3.
Fig. 2, shows a plan view, the top (not shown) being removed to better show
construction.
Fig. 3, shows a section on the line 3-3 in Figures 1 and 2 a part being broken
away to a section on the line 31-31 in said figures.
A, marks the sides of the frame and A¹ the cross pieces of the frame.
The first fold rolls comprise the roll B of ordinary construction and a com-
panion roll formed of the longitudinally movable members B B and fixed
roll B³, all arranged on a shaft, 133. The movable rolls, B₁ B' are provided with
a spline, 63, and groove mechanism which locks them against rotation on the
shaft, B3, and allows their free longitudinal movement on said shaft. The rolls
are provided with the gears B B4, one on the shaft, B³, and the other on the
roll, B, to compel them to move in unison. A drive shaft, F, is journaled in the
frame under the folding roll, B. A drive pulley, F1, is mounted on this shaft,
and a gear, F, meshes a gear, B³, on the shaft carrying the roll, B, so that the
roll B, is driven from the shaft F.
The roll, B2, is provided with an annular groove, b¹, into which runs a slitter
roll, c, which is mounted on the shaft, C. The shaft, C, is journaled in the
frame and a bracket, C2, secured to one of the cross pieces. It has a gear, C³,
which meshes a gear, B, and causes the rotation of the shaft, C.
As the paper passes through the first fold rolls, it is deflected as commonly
by tapes (not shown) which start and carry the paper through the slitter and
over the second fold rolls DD, one set at each side of the machine. The slitter
having separated the paper, the duplicate folding mechanisms at each side of
the machine each take a sheet and fold it, independently of the duplicate
mechanism at the opposite side of the machine. The shaft, D8, of one of each
pair of rolls, D. has mounted on its end a gear, D³, which meshes a gear, f, on
the shaft, F. The gear, f, has a grooved hub, and is secured to the shaft, F, by
a spline and groove mechanism, so that it is locked against rotation on the shaft,
but is free to move longitudinally thereon. Each mechanism is provided with
the usual starter, D'. This starter is carried by the arms, D* D*, which are carried
by a shaft, D5, mounted in the frame. An arm, D. extends from the shaft, D³,
and is provided at its end with a roller, D. A shaft, G, journaled in the
frame, and has mounted upon it, two cams, G¹, of considerable length. The

page_text: roller, D7, is arranged to ride the cam, G, and the cam is so shaped as to give
to the starter, D', the desired starting movement. A gear, G2, on the end of the
shaft, G, meshes with a gear, f³, on the shaft, F, by means of which the shaft, G,
driven.
In order that different sizes of sheets may be folded through their center at
the second fold, the second fold rolls, DD, with their starters, D', are mounted
in sliding boxes, 12, which allows these rolls with attendant mechanism to be
shifted to and from the center of the machine as the size of the sheet requires.
The cams, G, are sufficiently long to present a cam surface to the roller, D7, in
all positions.
The sliding boxes are arranged on the cross pieces A¹, in guides, aa, and the
boxes extend through slots, a¹, in the cross pieces, and are provided with the
racks, d, on their lower edges. Gears, d, carried by the shafts, d, mesh the
racks, D. The shafts, d, are journaled on the frame, and are operated by means
of a hand wheel, d³.
The paper passing from the second fold rolls is deflected by tapes (not shown)
as commonly and are carried over the third fold rolls, E E, through which it is
run. There may be subsequent folds if desired. The rolls, EE, are journaled
in cross pieces E¹.
In order that wrinkling at the third fold may be prevented, I pass the sheet
through a perforator before passing it through the second fold rolls. The perfor-
ator consists of the perforating wheel, c', groove, 3, and is mounted on the
shaft, C, and locked against rotative movement thereon by the spline, c. It is
free to move longitudinally on the shaft, C, however. A bracket, d, having
the fork, which engages the grooved sleeve, 2, is attached to and carried
with the sliding box, D. The perforating wheel, c¹, is therefore moved with the
rolls, DD, so that it is always in register with the folding line of the rolls. This
brings the perforated line on the sheet at the fold as desired, and provides for
the perforation of different sizes of sheets. The bracket, de, is also provided with
a fork, 8, which engages the grooved hub of the gear, f. This mechanism
moves the gear, f, with the sliding boxes so that it is kept in mesh with the
gear, D.
The roll, B, is provided with the annular groove, b, into which the perforating
wheel, c, runs. In order that this groove may be kept in register with the per-
forating wheel in its various positions, a bracket, , attached to the sliding
box, D3, is provided, and this bracket has a forked end, , which engages the
roll, B, by means of a groove, 63, so that the roll, B¹, is moved with the sliding
box, D2, and the perforating wheel.
If desired, the sheets may be passed through the first fold rolls without making
a fold. In this case what I term the second fold roll will, in reality, be the first
fold. The perforation would in this case also be effective for the object sought,
but not so necessary.
Having now particularly described and ascertained the nature of my inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
1. In a folding machine, the combination with a set of adjustable folding
rolls; of a perforator; and means for automatically adjusting said perforator
with each adjustment of said folding rolls to maintain it in register with the
folding line of said rolls.
2. In a
folding machine, the combination with the folding rolls, DD; of the
sliding boxes carrying said rolls; a shaft, C; a perforating wheel mounted on
said shaft and arranged to be movable longitudinally thereon; and means carried
by said sliding box for moving said perforating wheel longitudinally on the
shaft.
3. In a folding machine, the combination with the folding rolls, DD; of the
sliding boxes carrying said rolls; a shaft, C; a perforating wheel mounted on

page_text: said shaft and arranged to be movable longitudinally thereon; means carried
by said sliding box for moving said perforating wheel longitudinally on the
shaft; a shaft, B3; roll; B', mounted on said shaft, 133 and arranged to be
movable longitudinally thereon; and being provided with an annular groove, b,
in which the perforator runs and means carried by said sliding box for moving
said roll longitudinally with the perforating wheel.
4. In a double folding machine, the combination with a centrally located
slitter; two sets of folding rolls, one each side of the slitter and adjustable to
and from the slitter; of a perforator for each set of folding rolls; and means
for automatically adjusting said perforators with each adjustment of said folding
rolls to maintain them in register with the folding line of said rolls.
5. In a double folding machine, the combination with two sets of folding rolls
oppositely placed; and sliding boxes carrying said rolls which are adjustable
to and from each other; of a shaft, C; slitter, c, mounted on said shaft; longi-
tudinally movable perforating wheels, cl, also mounted thereon; and means for
moving said perforating wheels with said sliding boxes.
6. In a double folding machine, the combination with two sets of folding rolls
oppositely placed; and sliding boxes carrying said rolls which are adjustable to
and from each other; of a shaft, C; longitudinally movable perforating
wheels, c, mounted on said shaft; means for moving said perforating wheels
with said sliding boxes; a shaft, B; longitudinally movable rolls, B', on said
shaft provided with the annular grooves, b, in which run the perforating wheels;
and means for moving said rolls, B₁ with the said sliding boxes.
Dated this 13th day of December 1898.
FELL & JAMES,
Agents for the Applicant.