Improvements in Driving Belt-fasteners.
Year: 1888

page_text: Improvements in Driving Belt-fasteners.
I, MORITZ SEEBOLD of 36, Rounnandantenstr. at Berlin in the Kingdom of
Prussia, German Empire, Engineer, 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 improved driving belt-fastener consists in two hooked catches or fasteners,
fastening in each other, capable of being moved to a limited angle on one side,
as fully described in the following specification, and shown in the accompanying
drawings.
The improvement consists in the peculiar manner in which the two halves of the
fastener combine or hook in each other, and is accomplished by the employment
of two fasteners, which can only move to a certain extent in an outward direction,
one fastened to each end of the belt, without the aid of rivets or screws, as in the
usual method. It forms a better and safer fastening and also more easily unfastened,
than other belt fasteners.
Fig. 1 to 6 show the arrangement of the improved belt fastener.
The old belt fasteners which are hinged at the middle, can move to any angle with
each other, but as the belt, when running, swings to and fro, not only do the flaps or
tongues alter their positions by every movement, but the fastening pins receive a
shock every time that the belt swings, and so loosened.
In order to guard against this loosening and shaking, rivets or screws passing
through the belt must be used and the ill effect of the rivet or screw heads running
against the pulley is unavoidable, and consequently the rattling noise and the slipping
of the belts. By the improved fastener, the disadvantage of the rivet heads or screws
coming through, is avoided and nevertheless, the loosening of the fastenings of the

page_text: catches or fasteners is impossible, since the moving of the two halves of the belt.
fastener, on the belt itself, or on each other is prevented and the fastener, when
passing over a pulley adjusts itself to the diameter of same.
This is accomplished by the bounded movement of the hinged tongues in an outward
direction; this hounded movement is obtained by the form of joints, bearing surfaces
(which regulate the amount the binders move), as hinges for the two halves of the
fastener or binder. The contact points, or surfaces, must not lie in a straight line
with each other, but at an angle, as seen in figs. 146. a bare the two halves of the
belt fastener or binder, each being provided with projections e c, and the ends formed
in a hooked manner, as shown at hh'; both halves have one or more slits, which in
the half a extend right out to the end of h, but in the other half b, they only reach to
about a half of the length of the binder; the ribs s s' are formed differently in each
half, the ribs is narrower than the head h, while s¹ is made conical in its depth, with
the furrow formed in it; the hook-formed heads fasten in these furrows with
their side projections. These projections i¹are saw-like on their undersides, and
so formed, that the underside o o' lies on the upper side 3 of the half b.
In the same manner the under surface o² 3 of the hooked head lies on the upper
side of the half a. These slant surfaces o o' 02 03 form the contact surfaces
between the two halves ab besides these is the small projection, which fastens
into the recess r.
The jointing and working of this belt fastener is as follows:
Place half over the parts h h of the half a; fig. 3 shows the position of the
fasteners before joining the heads / come through the slits in and when they
project over the ribs sa slight sideward movement is given to the fastener a and the
belt stretched, so that the projection comes into the recess at 7, and the fastener
assumes the position as shown in figs. 1 & 2:
An accidental unfastening of these fasteners a b when they are fastened to the
belt, by means of the pins e c, is impossible, for the tension on the belt holds the
heads against each other. The projection prevents a side motion, from a
towards b, as well as the parts ii which fasten in the furrows n n.
The belt-fastener when running in a straight line has the position as shown in
fig. 1.
The surface flies fast against the surface o² 0³, and f³ against o o¹. By means of
these slanting surfaces o o¹ and o² 3, the fasteners a bare held securely together, they
can only move in the one way, so that when the belt swings inwards, as shown by the
arrow a in fig. 1, no shock is conveyed to the fastenings, and consequently loosening
of the fastenings; at the same time, if the belt swings outwards, the fasteners do not
move together; As the surface f¹ is at such an angle with o2 o³, and f³ with o 0',
even the loosest belt would not swing so much, as to make the angle R R' sumaller
than . If this is the case, the fastener a oscillates towards b in an outward
direction round the centre, and consequently the possibility of the loosening of the
pins c c. But the new arrangement allows no oscillating of the belt fastener in an
outward direction, and no shock comes on the pins cc; but if the fastener runs over
the pulley, it may oscillate in an inward direction and so suit itself to every diameter;
when running on the pulleys, the loosening of the fastener need not be feared.
It is clear, that it is only necessary to hold the fasteners fast; when running free
between the pulleys, so that it cannot alter its position, and it is not necessary to place
the fasteners ab at a given angle, but they can also be placed in a straight line; but
then the pins c c must be placed at an angle to the fasteners.
Having now fully 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). The combination of a binder a with a binder b, and one or more projections, at
the outside of one or both binders, which lie against the corresponding binder, for
the purpose of preventing the bending of the binders in an outward direction for the
purpose as described.

page_text: 2). The combination of a binder a with a binder b, and with the heads h h' which
form together the bearing surfaces o 01 02 0³, and hooks for the purpose as specified.
3). The combination of a binder a with a binder b, and with the heads h h³ which
form together the bearing surfaces o o'o o³ and hooks, and with the side-projections i
of the head h, with the furrows n of the ribs s¹ for the purpose as described.
4). The combination of a binder a with a binder b, and with the heads h h¹, which
form together the bearing surfaces o o¹ o² 0, and hooks and with the side-projections i
and the projection of the head h, with the furrows n of the ribs s¹, and recess » of
the head h, for the purpose as described.
Datal this 1st of Wheory 1888
A. KUHNT & R. DEISSLER,
Berlin. C. Germany, Alexanderstr.,
Attorneys.