Improvements in the Method of and Apparatus for Bending Straw- boards, Pasteboard, and the like to an Acute or other Angle without previous Scoring.
Year: 1892

page_text: Date of Application, 23rd Dec., 1892-Accepted, 18th Feb., 1893
COMPLETE SPECIFICATION.
Improvements in the Method of and Apparatus for Bending Straw-
boards, Pasteboard, and the like to an Acute or other Angle
without previous Scoring.
I, TEODOR REMUS, of Dresden, in the Empire of Germany, and of Tabernacle
Street, in the City of London, and Kingdom of Great Britain, Manufacturer,
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 refers to improvements in the invention described in my British
Patent dated June 28th 1892. No. 12043.
In order to strengthen the joint of the supporting plates in apparatus for bending
cardboard, strawboard &c. to acute and other angles without previous scoring or
incising an open joint is used according to this invention instead of the closed
hinge-like joint described in my said Patent.
Such open joint or pan joints may be constructed in several ways-Either the
plates 6 have one joint pan in common, 61 Fig. 1, or a separate pan b¹ is provided
for each as seen in Fig. 2. In either case springs d carry the joint-pans b¹, and
this permits the downward movement of the plates into the position shown in dotted
lines in the drawings when the plates 6 pass into the dotted angular position shewn
in the drawings for pinching the boards.
The modified form of bending device illustrated in Figs. 3 and 4 of the accom-
accompanying drawings allows the board to be gathered or puckered without
bending.
•
In this case the bars f Figs. 3 and 4 are fitted into a groove e¹ in the plunger e.
The springs 9 previously provided between tongue e¹ and bars f. Figs. 1 and 2. are
now placed between the bars f. for a like purpose.
Instead of the screws f¹ shewn in Figs. 1 and 2 a bar f¹ Figs. 3. 4 and 5
extending entirely along the groove e' is provided and to this the bars fare hinged
and it is in turn secured to the plunger e by suitable means say by studs engaging
with slot holes on the plunger front.
The plate a forming the lower part of the apparatus has a groove a¹ and in that
a bar a is provided upon which the plates bb are mounted edge-on, under the same
are the springs d for supporting the plates.
This modification operates as follows:-
When the plunger e descends upon the cardboard p inserted for the purpose of
being operated upon, the cardboard will first check the progress of the bars f.
Upon further descent of the plunger the springs f as well as springs d are
compressed, this causes the edges of the bars f. to be slightly forced into the card-
board p.
At the same time as the springs f' and d are compressed the bars f. will (by the
action of the plunger) be caused to approach one another and the bars b are forced
together by the adjoining edges of the part a. This contrary motion is larger for
the bars f. than for the plates 6 6 and the former will force together the parts of
the cardboard between them whilst the pressure of the springs increases (see
Fig. 5) and thus produce a gathering' or "stowing" or "puckering" of the
inner layers of card-board without any considerable bend at the line of such
gathering."
€6
"
To prevent downward bending of the cardboard during the gathering operation,
a tongue 6 is provided between the bars b. b. It has been found that the gathering
or puckering of the board takes place more readily when the rounded edge of this

page_text: tongue projects slightly above the surface of the plates b, so that a trifling
upward curve of the part to be gathered is produced.
23
It will be similarly advantageous to provide such tongue projecting above the
plates in apparatus in which the board is "puckered and bent at the same
time and the tongue may be an independent bar as in Fig. 5. or it may be formed
in one of the plates b.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The construction and arrangement of the hinged supporting plates bb and of
the pan joints for the same as described and shown in the drawings.
"
66
2. The arrangement of the bars ff. moving in a groove e¹ of the plunger and of
the plates bbvertically (or edge on) in a groove a' for the purpose of allowing
the board to be "gathered
puckered" or "stowed as set forth and shewn.
3. The use of a tongue or of a raised edge on one of the plates b. for the
purpose of facilitating the simultaneous bending and "gathering" or "puckering"
of the board.
Dated this 23rd day of December 1892.
"
NEWNHAM BROWNE,
Agent for the Applicant.