Improvements in and relating to Machines for Printing Envelopes, Envelope Blanks, and the like.
Year: 1896

page_text: Date of Application, 6th June, 1896--Accepted, 8th Aug., 1896
COMPLETE SPECIFICATION.
Improvements in and relating to Machines for Printing Envelopes,
Envelope Blanks, and the like.
We JULIUS LIEBHARDT and ERNST FISCHER of the City of Barmen, Rhenish
Prussia, Germany 3 Wertherhofstrasse do hereby declare the nature of this inven-
tion 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 such mechanisms which are adapted to feed the printing
machine with envelopes, envelope blanks and the like and turn them out of the same,
when being printed.
On the accompanying drawings our invention is illustrated by different views and
sections.
In the said drawings the reference numeral 1 indicates a fast and loose pulley
(Figs. 1 and 5) which are set in motion by any suitable gear, a clutch 2 communi-
cates power to the main shaft 3 which by means of a crank located on the other
side of the machine may be also set in motion by hand.
On same side to the shaft 3 is keyed a toothed wheel 4 gearing with two inter-
mediate wheels 5 and 6 and driving thus the printing cylinder and the ink apparatus
(Figs. 2 and 3). Into the wheel 6 mesh the wheels 8 and 10.
Now wheel 10 turns a small wheel 12 situated below it upon a pin fixed to the
framing of the machine, with said wheel 12 is connected a chain wheel 13
transmitting motion by means of an endless chain 15 and a corresponding chain
wheel to the outer feed roller 14. Around said roller and an inner guide roller 17
is put a broad transporting band 16 serving to bring the blanks falling upon it from
the machine to a distributing apparatus 18 from which they are taken away for
further working in the folding machine.
.
By means of said wheel 5 the two metallic ink rollers 30, 32 are being turned
(Figs. 4, 13 and 15) which are provided with ink in the following manner :
Upon shaft 9 of the form cylinder 9 is arranged a crank 19 imparting an inter-
mittent motion to the ductor roller 23 by means of a bar 20, a crank 21 the latter
being loosely held on its shaft and of a ratchet and pawl mechanism 22 of known
construction; with the nave of crank 21 is connected an excentric disk 24 which
engages in proper time with the friction roller 25 of an angle lever 26 carrying the
lift roller 27, said lever 26 being caused to move to and fro between the first ink
roller 23 and the soft transmitting roller 28 by means of disk 24 and the weight of
the free falling lift roller 27 the latter touching thus alternately both rollers and
transmitting ink from one to another. The roller 28 imparts the ink to the metal
roller 30 by means of a roller 29, the first 30 being made to rotate continuously by
wheel 5 and is also caused to move to and fro.
From 30 the ink will be fed to 31 and from 31 to 32; 30 and 32 are turned by
the toothed wheel 5, 29 and 31 by friction; from the metal roller 32 ink will be
transmitted to the to and fro moved rollers of soft material 33 and 34; the reference
numerals 35, 36 indicate simple rubbing rollers which lay loosely upon the metal
and other rollers respectively.
In order to actuate the rollers 30, 33 and 34 we proceed as follows:
On shaft 9 of the form cylinder is situated a small chain wheel 65 (Figs. 2 and 4)
from which a chain 67 is carried over guide rollers 66 to a chain wheel 68 which is
lodged underneath the framing on a short shaft which is provided beyond the
framing with a disk 69. This disk is fitted with a projection that engages with a

page_text: By this means it is possible to vary the working of the nipper within certain,
limits for large and small blanks.
According to this operation the pressing apparatus for the blanks is also made
variable by means of the arrangement shown in Figs. 22, 23 ani 28.
Aside of the excentric disk 80 are located on shaft 11" adjustable against each
other the disks 127 and 127; a slot 128 and a bolt running through the disks are
provided to turn 127 with respect to 127 whereby the acting piece of the
circumference may be lengthened or shortened and thus the roller 129 which is.
supported at the same time by both disks is causel to remain in contact with said
disk a longer or shorter time, consequently thereto the strippers 130 sitting on the
quadratic shait 131 and being influenced by 127, 127 are also pressed a longer or
shorter time against the circumference of the printing cylin.ler according to the
length of the blank to be printed.
We will now explain the arrangement for taking the printed envelopes or
envelope blanks with security from the cylinder and to prevent the falling do wa
of them with the wrong side; the printed side must come to lay overheid, the-
blank therefore turned.
To the form cylinder shaft 9 is keyed a cam disk 110" that works upon au angle.
lever 111 (Figs. 1, 3, 4, and 11) and turns it partially, the free end of this lever is
counected by a bar 112 to a bellows 113 which thus will be alternately pressed
together by said lever whilst it will be opened by weight, the wind thus obtained
will be blown out of the bellows by a pipe and a flat mouthpiece 114 against the
circumference of the printing cylinder 11, now the wind blows the blank which
hangs with one end at the cylinder away and turns it as is shown at W Fig. 4 at the
same time in such a way that it comes to lay with the printed side above on the
transporting band 16.
To allow the wind to work on a broader or smaller surface of the printing.
cylinder according to the breadth of the blanks the wind pipe is provided with an
adjustable mouth piece Fig. 29. It consists of a middle and two side portions, the
latter may be shifted on the pipe 115 by a socket y. Into the front end of the pipe
are cut slots 118 and now it will be easy understood that when the arms 117
are brought in contact with said slots the wind will blow through the free
portions 116, 117 that however through one of them alone or through two when the
socket with the arms 117 is accordingly shifted on the pipe by the bar X.
Having now fully described our invention and in what manner the same is to be
performed we declare that what we claim is :
1. The combination, in a machine for printing envelopes envelope blanks and the
like of a mechanism to feed said blanks to the machine and turn them out when being
printed consisting generally of adjustable needles moving to and fro on the printing
table, of a drilled through bar (88) running across the table and being provided
with linked arms (90, 91) which are fitted with needles to forwardly shift the
blanks whilst correspondingly arranged needles (101) stop the blanks to get their
right position; of an excentric (92) on shaft (11) and lever and bar connection
serving to lift said needles and allow the blank to be shifted to the nipper (110) of
the printing cylinder (11), said nipper may be made adjustable to a longer and
shorter time hold the blanks on the circumference of the printing cylinder by
means of a quadrantic lever (105, 107), cam rings (120, 120°), (123, 123") and a
presser (130) with excentric disk (127, 127"); of a bellows having the business to
take the blank from the printing cylinder and throw it upon the transporting band,
substantially as described and for the purpose set forth.
2. In a machine for printing envelopes, envelope blanks and the like the
combination of a nipper being arranged variable for the blank to be printed
consisting of a box (120) with cam (120°) aud arm (121) situated adjustable on the
printing cylinder shaft, of a ring (123) with cam (123) and arm (124) and parts
being arranged on box (120); of bars (122, 125) which are connected to