Year: 1889

page_text: We, HERMANN Fingerhut and ERNST TIETZE, Engineers, of the City of Breslau
in the Kingdom of Prussia, German Empire, 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 :—
The drawings herewith represent a lace paper manufacturing machine, according to
my invention Fig. 1 being a front view, Fig. 2 an end view, Fig. 3 a side view, Fig. 4
a ground plan, and Fig. 5 a detail.
The engraved plate a. is placed on the lower arm of a jack or buck A Fig. 2 while
the upper arm of the same buck carries the slide way in which moves the sliding
The sliding carriage B receives
carriage B to which the rollers b, h, & k, are attached.
a back and forward movement from a crank or other suitable mechanism actuated by
hand or by power in the usual way.
The rollers b, h&k, are all fixed to the sliding carriage B in the same manner, so
that the following description of how the roller b is fixed applies equally to the two
others.
The spindle of roller b passes through a slit in the side walls of the carriage B and
carries at each end the bearing 61, to each of which is attached a plate spring 63, the
free ends of which rest on adjoint pieces of carriage B, so that the rollers are
supported by the plate springs b², only; on the middle part of roller b₁, lies a small
roller the pivots of which grip into vertical slits in the side walls of carriage B. The
purpose and object of such roller c is the following:
C,
-
Directly opposite to the engraved plate a, that is to say on the under side of the
upper arm of the buck A, between the slide ways for carriage B, a projection a¹ is

page_text: formed, the plane of which is parallel with, and of equal length to the engraved
portion of plate a. This latter can be so placed that it comes in the right position to
the said upper projection a.
When
When carriage B is in the position represented in Fig. 3. then roller b, supported
by the springs, is raised so far that it is just clear above the engraved plate a.
the carriage is moved from the right towards the left, then the small roller c, will in
due course push against the right edge of the projection a¹, and in being forced
underneath the plane of a', it communicates the pressure to roller 6, which is only
supported by the springs b³, causing it to be lowered on to the engraved plate a, with
which it will remain in contact until the roller c has finished its journey across the
plane of a and glides over the left edge thereof when the pressure exercised on
roller b is released and the springs supporting it, will cause the roller to be lifted
away from the plate the instant when the diameter of roller c passes over the edge of
plate a¹.
When the carriage passes back again a similar process takes place.
The rollers & make, during the forward and backward movement of the sliding
carriage, the like movement up and down as does the roller , inasmuch as the small
rollers and cause the rollers h & k respectively to be influenced by the
projection a¹.
The machine consequently operates and works in such a manner that as the sliding
carriage travels forward the roller / smooth-presses the paper placed on the engraved
plate a, the roller b cuts it out, and the roller k smoothens it after being cut out, while
when the carriage moves backwards the order is reversed, roller pressing the paper
before it is cut out by roller b, and roller h pressing it after. Consequently papers
may be cut out i.e. made into lace papers with the forward as well as with the
backward movement.
In order that roller 6 in its forward and backward journeys shall not always touch
the plate a with the same part of its surface the following arrangements have been
contrived.
The spindle of roller carries at its one end, (in Figure 2 the left end,) a fixed rack
wheel 6 with which is connected a loose toothed wheel f, provided with a pawl f',
which catches in the rack wheel 63 (see also Fig. 5). When the sliding carriage
travels forward and backward the toothed wheel is brought into contact first with one
and then with another of the racks g & g¹, of which the one is placed underneath;
the other above, the toothed rack wheel, both fastened in some manner to the buck A.
The length of the racks are such that the tooth wheel is only being turned when
the roller is not in contact with the engraved plate a.
The position of the racks and of the teeth of the rack wheel 63 as well as of the
pawl fare arranged in such a manner that when the cog wheel, as the carriage
travels forward, from right to left, is in contact with the lower rack the roller b is not
turned, inasmuch as the pawl f' slides on the rack wheel connected with the loose
cog wheel, whereas when the cog wheel on the same forward journey conies into
contact with the upper rack g¹, and consequently the opposite turning movement of
the cog wheel takes place so that the pawl catches, causing the roller to be turned
in the opposite direction to that in which it was turned in passing over the engraved
plate a. The roller is turned so much that when the sliding carriage travels back-
wards the roller does not touch plate a with the same part of its surface as in the
forward journey, and in the backward journey the roller is not turned by the overhead
rack g', but by the lower rack g. By this arrangement the roller U, is prevented
from being worn more in one part than in the other.
Above the roller b, fastened in the sliding carriage is a scraper d, which serves to
remove any paper and the like from the roller.
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. A machine for the making of lace papers in which the paper is cut by means of

page_text: a nxed, level plate a. and forward and backward moving rollers, arranged in such a
manner that they touch the plate only while travelling over the engraved portion.
2. In a machine for the inaking of lace papers the method of fixing the rollers in
springs and causing them to be pressed against the cutting plate by means of their
being guided by an elevation a corresponding in size with the engraved portion of
the plate.
Both substantially in the manner as and for the purposes described, and as shewn
in the drawings.