Improvements in the Method of and Devices for Joining Together the Ends of Driving and similar Belts.
Year: 1899

page_text: Date of Application, 19th July, 1899
Complete Specification Left, 19th Apr.. 1900-Accepted, 2nd June, 1900
PROVISIONAL SPECIFICATION.
Improvements in the Method of and Devices for Joining Together the
Ends of Driving and similar Belts.
I, ISAAC JACKSON, of Glossop, in the County of Derby, Belt Fastener Manu-
facturer, do hereby declare the nature of this invention to be as follows:-
This invention relates to the method of and devices for joining together the
ends of driving and similar belts.
In carrying these improvements into effect the belt ends which are to be
joined have placed upon them a plate or plates through which is or are passed
a screw or screws furnished with a thread or threads capable of screwing into
and engaging with the substance of the belt. In general the plate or plates
is or are recessed or concave on the face or faces next to the belt, so that the
belt may be drawn up into and be partly contained within the plate or plates.
In a joint in which the ends of the belt are simply laid against one another.
that is in a butt joint, one or more of the plates is or are laid across the joining
line.
Each end of each plate is perforated for the passage of the screw which
is screwed into the substance of the belt. One or more screws may be passed
through each plate end.
In a lap joint in which one end of the belt is laid upon the other a simple
dished or concave disc is placed upon the joint and one or more of the screws are
passed through suitable perforations in it and engage with both ends of the
belt. Instead of the single disc described a number of such discs may be employed.
In dovetail, intersecting, and similar broken joints the plates may be laid
across as described for a butt joint and be similarly secured in place, and in this
case if desired the plates may be flat instead of recessed or dished.
The inner faces of the plates, especially when for use with butt or like joints
may be formed or provided with spikes, teeth or their equivalents which
enter the belt, or the plates may be formed with fine perforations through which
small pins may be passed.
If desired the screws may be of a sufficient length to pass completely through
the belt and engage with discs, strips or plates of leather, vulcanised fibre or
other suitable material laid on the under side of the belt, or with metallic washers
or nuts.
In ply belt butt joints the plies at the ends to be joined may be separated and
a flat or other plate or plates may be laid within the plies so as to be contained
within the material of the belt. Screws are then passed through perforations
in the plate or plates. In other belts than ply belts the ends may be slit for
the reception of the joining plate which is then retained in place by means of
screws screwing into the belt.
The screws employed resemble wood screws but may conveniently be formed
with a deeper thread, and the edges of the threads may be serrated or notched so
as to prevent easy withdrawal.
The plates herein before described may be substituted by wire links or the

page_text: like the ends of which are bent or formed into eyes. These links may be of
circular, half round or any other desired cross section and are laid across the
joint in the same manner as the plates, and the eyes at their ends serve for the
passage of the screws.
W. E. HEYS & SON,
Agents for the Applicant.
Improvements in the Method of and Devices for Joining Together the
Ends of Driving and similar Belts.
I, ISAAC JACKSON, of Glossop, in the County of Derby, Belt Fastener Manu-
facturer, 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:-
This invention relates to the method of and devices for joining together the
ends of driving and similar belts.
"
In carrying these improvements into effect, the belt ends which are to be
joined, have arranged upon or within them, one or more plates or links, through
which and the substance of the belt, gimlet pointed screws similar to ordinary
coach" and wood screws are passed. When plates are used, these are
generally cupped with their concavity or concavities next to the belt so that the
material of the belt may be drawn up or forced into the concavity, as is at present
practised.
I will describe my present improvements with reference to the accompanying
drawings in which:-
Figures 1 and 2, represent plans of joints formed with cupped plate fasteners:
Figures 3 and 4, longitudinal sections of a butt and lap joint fastening
respectively:
Figures and 6, plans and longitudinal sections of modified forms of the joint
and fasteners respectively:
Figure 7, a longitudinal section of a fastening with a contained plate or link:
Figure 8, an elevation of a fastening screw: and
Figure 9, a plan and section of a modified form of the fastener.
In the case of a butt joint, Figures 1, 2, 3, 5, 6, and 7, the fastening device
consists of one or more plates or links P, the number being determined principally
by the width of the belt. Each plate or link is provided near its opposed ends
with a hole or eye for the passage of a screw S, the threads of which bite into
the substance of the belt B B', thus securely and firmly connecting the belt ends
to the plates or links. As in the case of wood screws, it is useful to make holes
in the belt with a gimlet or awl to facilitate the entry of the screws. In applying
the fastener, it is laid longitudinally and symmetrically across the joint on the
upper side of the belt, and the screws are then firmly inserted. As shewn by
Figures 1, 2 and 3, the plates P, are both curved and cupped: as indicated by
Figure 2, and shewn in Figure 3, the fastening is re-inforced by spikes or
teeth T, on the under side of the fastener. These enter the substance of the
belt and increase the hold of the plates very materially. Similar teeth may be
used on the undersides of the fasteners shewn by Figures 4 and 5, and on one
or both sides of that shewn by Figure 7.
In the case of a lap joint, Figure 4, the plates P, are either circular, and one
or more of them may be used according to the width of the belt: or, they may

page_text: have any suitable length shorter than the width of the belt, be laid longitudinally
with the joint, and be secured by two or more screws passing therethrough and
through both the thicknesses of the belt. In any case, it is advantageous that
the underside of the plates should be concave, and, if they be provided with
teeth, that these teeth should be long enough to penetrate the lower end of the
belt B. In all cases where teeth are used, they may be cast or formed integrally
with the plates or links, or they may consist of short wire nails or the like,
driven through holes formed in the plates.
With dovetailed or intersecting joints (Figure 5), the fasteners are used as
for ordinary butt joints, but in this case they may be shorter and flatter. In
either form of butt or similar joint, the screws S may pass entirely through the
substance of the belt and into a leather safe" or connecting strip C, which
also re-inforces the joint.
In multiple ply belt butt joints, the plies at the ends of the belt may be
separated, and the plate or link, or the plates or links, may be inserted therein
and screws be passed through all, as shewn by Figure 7. In belts of suitable
thickness, other than multiple ply, the ends of the belt may be slit, and the
plates be inserted in the slits and secured in like manner.
In belts which do not carry a very heavy load, the wire links shewn by Figure 5
may be substituted for the plates shewn by the other figures. These links P
have eyes formed in their ends through which the screws are passed.
Instead of forming the teeth as hereinbefore described, on the plates or by
nails or the like passing through them, they may be formed upon washers arranged
between the plates or links and the substance of the belt or may consist of wire
nails or the like passing through such washers into the belt.
In the modification illustrated by Figure 9, the holes in the plates P, are made
taper, with their larger diameters outwards, and are filled with taper plugs of
leather, wood, vulcanised fibre or the like. The screws S, instead of being
inserted from above the fastener, are inserted from below the belt and enter
the plugs, as indicated. The taper form of the plugs ensures, when the screws
are driven firmly home, that the plates shall be securely held upon the belts,
and that they cannot be drawn through the holes in the direction of the belt
by the action of the screws.
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. The herein before described method of jointing the ends of driving and
similar belts, which consists in arranging one or more connecting plates above
or within the joint and in attaching the plates or links to the belt by means of
gimlet pointed screws, substantially as described with reference to the accompany-
ing drawings.
2. In cupped or dished belt fasteners of the type described, constructing the
cupped plates or cupped washers used therewith, with teeth projecting therefrom
so as to penetrate the substance of the belt, substantially as hereinbefore described
with reference to the accompanying drawings.
3. Cupped or dished belt fasteners provided with teeth penetrating the sub-
stance of the belt, and attached thereto by wood screws or screws similar
thereto, constructed and arranged substantially as herein before described with
reference to Figures 2, 3 and 9, of the accompanying drawings.
4. Belt fasteners consisting of wire links attached to the belt by "wood" or
similar screws, constructed and arranged substantially as hereinbefore described
with reference to Figure 6 of the accompanying drawings.
5. Belt fasteners consisting of plates or links, inserted into the substance of
the ends of the belts and secured thereto by means of "wood" or similar screws,
substantially as hereinbefore described with reference to Figure 7 of the accom-
panying drawings.

page_text: 6. As a means for reinforcing belt fasteners of the type set forth, a strip of
leather arranged below the joint and secured thereto by the described screws,
substantially as herein before set forth with reference to the accompanying
drawings.
101
1
P
11000