mprovements in Machines for Gumming the Flaps of Envelopes and Postal Wrappers, and for Colouring or Bordering Envelopes, Note Paper, and the like.
Year: 1899

page_text: Date of Application, 4th Dec., 1899-Accepted, 24th mar.,
COMPLETE SPECIFICATION.
mprovements in Machines for Gumming the Flaps of Envelopes and
Postal Wrappers, and for Colouring or Bordering Envelopes, Note
Paper, and the like.
I, ROBERT ERNST FISCHER, of Barmen, Germany, 3, Wertherhofstrasse, Manu-
acturer, do hereby declare the nature of this invention and in what manner the
ame is to be performed, to be particularly described and ascertained in and by the
ollowing statement:-
This invention relates to an improved machine for gumming the sealing flaps
of envelopes, postal wrappers or for colouring or bordering envelopes note paper
and the like. The improved machine has reference to that class of gumming
machines in which the spacing or fanning out of the blanks is effected by hand
and not mechanically. The improvements consist in arranging the feeding tape
carrying the blanks to the gumming or bordering contrivance separate from the
drum receiving the gummed envelopes and delivering them to the travelling tapes
for drying.
My invention further on consists in providing means by which said drum
rotates faster than said feeding tape in order to space or fan out the blanks
mechanically already gummed so that no glueing together or soiling of the blanks
by each other can take place.
My invention further provides a special starting and stopping device for the
gumming contrivance as well as for the feeding tape so that the working of the
machine can be better controlled and its attending is facilitated.
The annexed sheet of drawings represents my invention.
Figure 1 is a side elevation of the main part of the improved gumming
machine.
Figure 2 is a plan of the same.
Figures 3 and 4 are details.
1 is the main shaft set in motion by a pulley 2 and transmitting power to
shaft 5 by means of chain gearing 3, 4. On shaft 5 is seated a drum 6 which
rotates with the suitable speed. To shaft 1 is keyed a sprocket wheel 7 which
drives by means of a chain 9 a sprocket wheel 8 keyed on a shaft 10. Said shaft
has a sprocket wheel 11 which drives by means of a chain 12 the sprocket
O wheels 13, 14, 15 keyed to the shafts 16, 17, 18 of the guide rollers 19, 20 and 21.
22 is a feeding tape on which the blanks are spaced or fanned out by hand with
carried near to the drum 6 where
the help of a suitable implement. Said tape
it is guided back round a roller 23 and over the rollers 21, 20, 19 in corrugations
A roller 24 is arranged for stretching the tape for which purpose its shaft 20
35 is suspended in rods 27 which are connected with a slide 28 guided in suitabl
brackets 29. Said slide may be raised or lowered by screws 30 and consequentl
the tape 22 may be loosened or stretched, whilst its travelling motion is effecte
by the rollers 19, 20, 21 revolving all in the same direction. The driving mean
of said tape 22 are proportioned in such a manner that the tape travels somewh
40 slower than the drum 6 revolves. The effect of this arrangement is that the blank
after being gummed or bordered and delivered to the drum 6 where they are seize

page_text: by the endless tapes 34, 35 are spaced or fanned out mechanically so that no
glueing together or colouring of the blanks can take place.
Figure 3 shows the blanks as fanned out by hand and gummed or bordered on
the tape 22, Figure 4 shows the blanks spaced or fanned out some more so that a
free space is formed between the gummed portion and the edge of the following
blank for the purpose described before.
The gumming or bordering contrivance consists of the rollers 31, 32, 33 the
first being preferably a brush roller and arranged to be lifted from the blanks and
held in this position. Likewise arranged is also the the transmitting roller 32 the
pivots of which are borne excentrically in the framing 49 so that by means of a
handle 49 said roller may be also lifted from its fellow rollers. The roller 33
receives the gum or colour by means of a tube 51 flattened at one end and having
connection with a gum or colour reservoir. Below said roller 33 is arranged a
reservoir 52 for overflowing colour or gum. The said rollers are mounted in a
frame 49 which is pivotally secured to the shaft 47 of roller 33. A U-shaped
rod 54 attached to said franie 49 and provided with a weight 50 serves to keep the
frame in a balanced out position.
The gumming or bordering contrivance and the driving means of the feeding
tape receives each a special starting and stopping device independant from each
other so that the feeding tape may be set in and out of motion without regard
to the gumming or bordering device and vice versa. This is done in the following
manner:
The shaft 10 imparts motion to the shaft 47 of roller 33 by means of sprocket
wheel 41 and 47 fixed on said shafts and a chain 48. The hub of wheel 41 forms
part of a clutch 42 the corresponding portion of which is secured to a double armed
lever 43. This lever is seized by a rod 44, said rod is connected with an
angle lever 45, its pivot being suitably guided has a handle 46 for operating the
device.
In a similar manner the hub of wheel 11 which imparts motion to the
rollers 19, 20, 21 of the tape 22 is formed to a clutch 36, the movable part of
which having connection to a lever 37 which is operated by a handle 40 and
intermediate connecting means, the angle lever 39 and a connecting rod 38.
The drum 6 can be set out of motion together with the machine.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
1) In a gumming or bordering machine for envelopes postal wrappers and the
like of the class described in the preamble of the specification the arrangement
of the feeding tape 22 being guided back in front of the guiding drum 6 over a
roller 23 and in corrugations over rollers 19, 20, 21 said tape being stretched by a
roller 24 adapted to be raised or lowered and receives a travelling motion which
is slower than the revolving motion of the drum as illustrated and for the purpose
set forth.
2). In a gumming or bordering machine for envelopes postal wrappers and the
like of the class described in the preamble of the specification the arrangement and
use of a starting and stopping device for the gumming or bordering contrivance
and of a starting and stopping device for the feeding tape both devices being
independant from each other as illustrated and for the purpose set forth.
Dated this 30th day of November 1899.