Improvements in Machinery for Making Envelopes.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Machinery for Making Envelopes.
I, CHARLES DENTON ABEL, of Birkbeck Bank Chambers, Southampton Build-
ings, in the County of London, Consulting Engineer and Chartered Patent
Agent, do hereby declare the nature of this invention (as communicated to me
from abroad by the Firm of Gebrüder Tellschow, of 27, Grünauer Strasse,
Berlin, Germany, Manufacturers), to be as follows:
This invention relates to an improved construction of machinery for making
envelopes in which the mechanism for gumming the blanks and feeding them
to the folding mechanism is arranged to operate with a circular motion.
In machines of this kind as heretofore constructed several pairs of gummers
are carried by a disc which rises and falls with a vertical shaft to which it is
fixed, so that all the gummers rise and fall simultaneously. As however only
two pairs of gummers are in operation at the same time, namely the one pair
for gumming and lifting off the paper, and the second for delivering the paper
to the folding mechanism, the other two pairs are uselessly raised and lowered.
An arrangement has already been proposed whereby the pairs of gummers
can be raised and lowered independently of each other, but for this purpose,
mechanisms are employed that are too complicated to insure a reliable working.
In these cases a cam fixed to a vertical shaft is provided with surfaces such that
by its rotation it effects the raising and lowering of the gummer pairs that
slide between guides.
The cam serves as a path for rollers carried by the gummer arms.
According to the present invention a construction is employed in which a
perfectly level path is provided for the rollers of the gummer arms, as I will
describe with reference to the accompanying drawings in which Fig. 1 shews
the arrangement of the gummer arms in vertical section, and Fig. 2 is a plan
of the same.
To a vertical shaft a is fixed at the upper end a crosshead 6 which carries
the four sliding blocks d for the gummer arms gggg in four vertical guides c.
The guide blocks d move in the guides upon vertical rods e which are fixed to
the crosshead 6 at the lower ends. The guide blocks together with the
gummers are pressed downwards by means of springs f mounted on the rods e.
On the inner side of the blocks are mounted rollers which run on the
horizontal circular path which is rigidly fixed to the framing of the machine,
it has a sector-like separate part which can be raised and lowered, so that
when it is raised it is flush with the other part and the path presents a con-
tinuous level circular surface, while when is lowered, the corresponding part
of the path is at a lower level than the other part. The moveable part 2 of
the path is of such a size that two guide rollers h can be situated upon it at
the same time, that is to say, when two rollers are situated at the same time
on the moveable part 2 and this is lowered, the rollers with the guide blocks d
follow such motion in descending together with the gummer arms.
The action is as follows::
Assuming the part 2 of the path to be in the raised position level with the

page_text: parti, thus forming a perfectly level circular path, and also assuming that
the rollers of the gummer arms g¹ g² are situated upon the part as shewn
at Fig. 2, then if this part be lowered by means of an excentric or equivalent
device on the main shaft of the machine, acting upon the rod fixed to ¹,
the gummer arms g¹ g² will also be lowered into the positions I and II.
The gummer arm gl in position I is applied to the pile of envelope blanks in
order to seize a blank with its gummed under surface (the blank being indicated
by dotted lines in Fig. 2) while the gummer arm g² in position II delivers the
sheet previously moved into this position from position I, to the folding
mechanism. After this action of the gummer arms in the lowered position, the
part is raised, whereupon the crosshead is turned one quarter round.
By this motion the gummer is brought from position II to position III while
the gummer at IV is brought to position I. Gummer g will then be situated
at II while g will be at I. Gummer g' then delivers the blank it holds to the
folding mechanism on the following lowering of the part ¹, while g seizes the
next sheet on the pile of blanks.
Thus at each partial rotation of the cross head the lowering of two gummers
or pairs of gummers is effected.
Also, each gummer or pair of gummers is twice lowered; first in the position I
and the second time in position II.
The gummers in the positions III and IV do not participate in the up and
down motion of those in the positions I and II. By this means a very quiet
working of the machine is insured.
The raising and lowering of the part of the path is effected at the proper
moments by an excentric or other device on the main shaft as above stated.
In the arrangement shewn at Fig. 2, each guide block d only carries a single
gummer arm. This arrangement is employed when the open flap of the envelope
has been previously gummed, or when only one part of the envelope requires
to be gummed, as in the case of wrappers for printed matter.
The single gummer arm serves for gumming the lower or closed flap of
envelopes. If at the same time the upper or open flap requires to be gummed,
each guide block d is provided with two gummer arms that are situated opposite
cach other.
Instead of arranging the crosshead 6 with four blocks d with gummer arms,
there may be only two, or three, or more than four.
In any case, the section
of the roller path is arranged to carry two rollers,
that rise and fall with the section.
Dated this 19th day of October 1898.
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Machinery for Making Envelopes.
I, CHARLES DENTON ABEL, of Birkbeck Bank Chambers, Southampton Build-
ings, in the County of London, Consulting Engineer and Chartered Patent
Agent, do hereby declare the nature of this invention (as communicated to me
from abroad by the Firm of Gebrüder Tellschow, of 27, Grünauer Strasse,
Berlin, Germany, Manufacturers), and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:-
This invention relates to an improved construction of machinery for making

page_text: envelopes in which the mechanism for gumming the blanks and feeding them
to the folding mechanism is arranged to operate with a circular motion.
In machines of this kind as heretofore constructed several pairs of gummers
are carried by a disc which rises and falls with a vertical shaft to which it is
fixed, so that all the gummers rise and fall simultaneously. As however only
two pairs of gummers are in operation at the same time, namely the one pair
for gumming and lifting off the paper, and the second for delivering the paper
to the folding mechanism, the other two pairs are uselessly raised and lowered.
An arrangement has already been proposed whereby the pairs of gummers
can be raised and lowered independently of each other, but for this purpose,
mechanisms are employed that are too complicated to insure a reliable working.
In these cases a cam fixed to a vertical shaft is provided with surfaces such that
by its rotation it effects the raising and lowering of the gummer pairs that
slide between guides.
The cam serves as a path for rollers carried by the gummer arms.
According to the present invention a construction is employed in which a
perfectly level path is provided for the rollers of the gummer arms, as I will
describe with reference to the drawings accompanying my Provisional Specifica-
tion in which Fig. 1 shews the arrangement of the gummer arms in vertical
section, and Fig. 2 is a plan of the same.
To a vertical shaft a is fixed at the upper end a crosshead b which carries
the four sliding blocks for the gummer arms g¹ g² g³g in four vertical guides c.
The guide blocks move in the guides upon vertical rods e which are fixed to
the crosshead at the lower ends. The guide blocks d together with the
gummers are pressed downwards by means of springs f mounted on the rods e.
On the inner side of the blocks are mounted rollers h which run on the
horizontal circular path which is rigidly fixed to the framing of the machine,
it has a sector-like separate part which can be raised and lowered, so that
when it is raised it is flush with the other part and the path presents a con-
tinuous level circular surface, while when is lowered, the corresponding part
of the path is at a lower level than the other part. The moveable part of
the path is of such a size that two guide rollers h can be situated upon it at
the same time, that is to say, when two rollers are situated at the same time
on the moveable part and this is lowered the rollers with the guide blocks d
follow such motion in descending together with the gummer arms.
The action is as follows:-
:-
Assuming the part of the path to be in the raised position level with the
part i, thus forming a perfectly level circular path, and also assuming that
the rollers of the gummer arms g¹ g² are situated upon the part ¹ as shewn
at Fig. 2, then if this part be lowered by means of an excentric or equivalent
device on the main shaft of the machine, acting upon the rod fixed to ¹,
the gummer arms will also be lowered into the positions I and II.
The gummer arm in position I is applied to the pile of envelope blanks in
order to seize a blank with its gummed under surface (the blank being indicated
by dotted lines in Fig. 2) while the gummer arm g2 in position II delivers the
sheet previously moved into this position from position I, to the folding
mechanism. After this action of the gummer arms in the lowered position, the
part is raised, whereupon the crosshead is turned one quarter round.
By this motion the gummer is brought from position II to position III while
the gummer at IV is brought to position I. Gummer will then be situated
at II while g will be at I. Gummer g¹ then delivers the blank it holds to the
folding mechanism on the following lowering of the part ¹, while seizes the
next sheet on the pile of blanks.
Thus at each partial rotation of the cross head the lowering of two gummers
or pairs of gummers is effected.
Also, each gummer or pair of gummers is twice lowered; first in the position I
and the second time in position II.

page_text: The gummers in the positions III and IV do not participate in the up and
down motion of those in the positions I and II. By this means a very quiet
working of the machine is insured.
The raising and lowering of the part of the path is effected at the proper
moments by an excentric or other device on the main shaft as above stated.
In the arrangement shewn at Fig. 2, each guide block only carries a single
gummer arm. This arrangement employed when the open flap of the envelope
has been previously gummed, or when only one part of the envelope requires
to be gummed, as in the case of wrappers for printed matter.
The single gummer arm serves for gumming the lower or closed flap of
envelopes. If at the same time the upper or open flap requires to be gummed,
each guide block d is provided with two gummer arms that are situated opposite
each other.
Instead of arranging the crosshead 6 with four blocks d with gummer arms,
there may be only two, or three, or more than four.
In any case, the section
of the roller path is arranged to carry two rollers,
that rise and fall with the section.
Having now particularly described and ascertained the nature of this
invention, and in what manner the same is to be performed, I declare that what
I claim is:-
-
In letter envelope machines, in which the gummer makes a rotary movement
for the purpose of feeding the paper from the pile of paper to the folding
apparatus, the construction of the path i for the rollers of the guide blocks d
that carry the gumming arms, with a segment ¹ moved up and down, so that
the gumming arms that have their rollers situated on this segment are simul-
taneously raised and lowered for the purpose of lifting the paper from the pile
and delivering it to the folding apparatus.
Dated this 28th day of July 1899.
ABEL & IMRAY
Agents for the Applicant.