mprovements in Machines for Bevelling or Cutting Leather or other Straps, Belts, and the like.
Year: 1895

page_text: Date of Application, 29th Nov., 1895-Accepted, 4th Jan.,
1896
"
LUMIDELE DE PRETTUATION.
mprovements in Machines for Bevelling or Cutting Leather or other
Straps, Belts, and the like.
I WILHELM KAULHAUSEN, Machine Manufacturer of Aachen in the Empire
of Germany, 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 invention relates to a machine designed for bevelling or cutting off obliquely
the ends of leather or other straps or driving belts principally with a view of being
able to put the straps upon one another in connecting several layers without
increase of thickness.
The method of working of the machine is essentially as follows:-
On the rails of a movable inclined table, capable of being displaced by means
of a toothed bar, lies a roller capable of being displaced only in the vertical
direction. Over this roller a knife is held fast; between these parts the strap,
clamped at the other end of the table, is led through and pressed down by a roller
above the former roller. When the table is moved in its length direction by a
hand crank or other device, the strap moved together with the table will be
bevelled off corresponding to the inclination of the table, as the roller bearing the.
strap rises on the rails of the oblique table and the knife remains stationary.
Moreover a device is added which cuts off the extreme end of the strap in the form
of a curve.
In the accompanying drawings,
C
On Sheet 1, Fig. 1. shows a longitudinal section of the machine; Fig. 2 a cross
section on line, a of Fig. 1; Figs. 3 and 4 show the devices for regulating the
position of the table.
On Sheet 2, Fig. 5 is a plan and Fig. 6 a horizontal section on line y, y, of
Fig. 1. Figs. 7 to 14 are detail views of parts of the machine.
The two side frames of cast iron 1 and 2 are connected by stay-rods 3 and have
each on its inner side a horizontal guide 4 in which the movable table 5 slides.
The table is moved by means of the pinion 8 on the shaft 6 of the fly-wheel 7
which pinion gears into the rack 9 arranged on the underside of the table. Above
the table 5 lies another table 10 which is connected to the former so as to follow
its motion. It is borne at its one end by a screw-spindle 12 engaging in a nut 11
under the table 5 and can be moved up or down by the hand-wheel 13.
The other end of the table 10 is borne in the following way :-Two bearings 14
(see also Sheet 2, Figs. 9, 10 and 11 in detail) are held by the lugs 15 on the table 5,
so that they cannot be displaced (Figs. 1 and 4) and they carry the shaft 16 which
is provided at two places, symmetrically situated with grooves forming eccentric.
wrists 17. These wrists are surrounded by two axle bearings 18, displaceably fixed
on the under side of the table 10. By turning the axle 16 by means of a square
key, the upper table is lifted and in order to mark the degree of lift, divisions are
arranged on the front side of one of the bearings 14. The position thus given to
the axle is maintained by means of a gripping block 19 at the middle (Fig. 1) with
screw 20 for forcing it against the axle 16. The table 10 has at its sides two
elevated rails 21 on which moves the cutting roller 22 or its bearing rollers 23;
the cutting roller is borne by the frames 1 and 2 in such a way as to be capable
of moving only in a perpendicular direction; over this cutting roll is the pressing
The
roll 24 which lies in the lever 25 and is pressed downwards by the same.

page_text: lever swings round the shaft 26 and is drawn downwards by the spring 27. Aside
of the pressing roll 24 and the cutting roll 22 the knife 28 is carried by the side
frames of the machine. It is evident from the arrangement described that when,
by turning the fly-wheel 7, the tables 5 and 10 are moved, the strap or belt 30
clamped to the table 10 at 29 is drawn through between the cutting and the
pressing rolls. In this operation, however, by means of the oblique inclination
and the consequent wedge effect of the table 10, the cutting roll lying on it is
pressed upwards and in consequence also the strap. The pressing roll recedes and
the strap as it is cut is brought upward so that it is cut obliquely. In order to
round off the end of the strap, curved noses 31 are connected by pins to the side of
the rails 21 of the table 10 (see Figs. 1 to 4 and 12). This piece consists
essentially of an angular piece of metal the upper face of which is rounded off
concavely, while its perpendicular leg when the nose is reversed on its pin into
its operative position, rests on the bearing 14 of the axle 16. The rotation of the
cutting roll 22 and of the pressing roll 24 is effected by the toothed wheel 32 on
the shaft 6 of the fly-wheel driving the large toothed wheel 33 on the shaft 34,
from which, by means of pinions, the cutting roll 22 is directly driven while the
pressing roll 24 is driven by means of the pinions on the shaft 26. At the termi-
nation of the movement of the table the cutting roll rises on the curved side of
the nose 31 and cuts the extremity of the strap in a form corresponding to this
curve.
On Sheet 2 separate representations of these parts are given namely Figs. 7 and 8
show the eccentric axle 16, Figs. 9, 10 and 11 the bearing 14; Fig. 12 the nose 31
and Figs. 13 and 14 the lever 25.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what 1
claim is.
(1.) A machine for bevelling or cutting obliquely (sharpening) leather or other
straps or belts having a driving cutting roll 22 which by means of rollers 23 runs.
on the lateral rails 21 of an upper table 10 which can be regulated in its angular
position by means of an eccentric axle 16, 17.
.
(2.) In the machine above described the device for rounding off the ends of belts
or straps consisting of the nose 31 on the rails 21 and adapted to be reversed to
rest upon the axle bearing 16 on the curved upper surface (side) of which nose the
cutting roll 22 rises as set forth.
Dated this 29th day of November 1895.
HERBERT HADDAN & Co.,
18 Buckingham Street, Strand, London, W.C., Agents to Applicant.