Improvements in and connected with Belt Fasteners.
Year: 1890

page_text: Date of Application, 9th Dec., 1890
Complete Specification Left, 9th Sept., 189! -Accepted, 10th Oct., 1891
PROVISIONAL SPECIFICATION.
Improvements in and connected with Belt Fasteners.
I, ISAAC JACKSON of High Street Glossop in the County of Derby, Manufac-
turer of Belt Fasteners, do hereby declare the nature of this invention to be as
follows:-
This invention relates to belt fasteners of the type or character described in the
Specification of Letters Patent granted to me No. 11,065 dated the 13th day of
In these
August A.D. 1887 and No. 19,913 dated the 11th day of December 1889.
fasteners the belt is compressed between two cupped parts, as for example between
two cupped washers or between a cupped bolt head and a cupped nut so that the
belt or the layers of belt is or are drawn by the fastener out of the level or plane
in which it or they would naturally lay.
According to my present improvements, I form the upper or outer part of the
fastener with two or four or more cupped parts through each of which a bolt or
screw is passed from the under side of the belt.
The bolt, the washer (if used), and the nut, may be constructed as represented
by the drawings appended to my former Specifications, but I prefer to form the
head of the screw conical and to cut two nicks in opposite diameters of the head.
In the washer which fits upon the screw head I form two nibs or projections which
fit within the nicks in the head of the screw, and I also form two teeth (or more if
desired) on the washer to engage with the material of the belt.
In use, the fastener is arranged so that the two ends of the belt make a butt
joint along the centre of the fastener, which on being tightened up grips both ends
equally.
I prefer to employ a cover piece or "safe" which is arranged above the butt
joint and below the upper part of the fastener, so that in case the fastener should
by any chance be broken, the safe will still form an effective connection. The
safes may be sent out ready for use with the holes for the passage of the screws
punched in them and they will thus form templates for forming the screw holes in
the ends of the belts.
The fasteners constructed according to these improvements may advantageously
and conveniently be used to repair belts which are torn or similarly injured, the
fastener being arranged so that the screws come through opposite sides of the
injured part.
Dated this 8th day of December A.D. 1890.
WILLIAM E. HEYS,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in and connected with Belt Fasteners.
1, ISAAC JACKSON of High Street Glossop in the County of Lancaster, Manufac-
turer of Belt Fasteners, 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 belt fasteners of the type or character described in the
Specifications of. Letters Patent granted to me No. 11065 dated the 13th day of
August A.D. 1887 and No. 19913 dated the 11th day of December A.D. 1889.
In these fasteners the belt is compressed between two cupped parts, as for example,
between two cupped washers or between a coned or domed bolt head and a cupped

page_text: washers D are placed in the positions they are to occupy, and they are pressed upon
the belt so that their fangs I engage with the texture of the belt. The screws are next
passed through the washer, the belt, and the safe, and the nicks in their heads
engaged with the nibs in the washers. As the washers are prevented from turning
by their teeth engaging with the belt, and as the nicks in the screw heads engage
with the nibs in the washers, it is evident that while they are in position, the screws
cannot be turned, and that the nuts may be screwed up to tighten the fastener
without any further precaution being taken to prevent the rotation of the screw
with the nut.
When all the screws have been placed in the ends of the belt, the upper part G
of the fastener is placed over the joint, with the ends of the screws projecting
through the holes therein.
For the
The screw holes are formed one in the centre of each cupped part, and the hole
is sufficiently large to permit the passage of the tubular part of the nut.
same purpose, the holes in the safe, or, when the safe is not used, the holes in the
ends of the belt, are also generally enlarged, at least in their upper parts.
The upper part of the fastener having been placed over the screw ends upon the
joint, the nuts are placed thereon and tightened, by which action the substance of
the belt, or of the belt and safe, is forced up by the heads of the screws into the
cupped parts of the upper part G as shewn by Figures 2, 5, and 11. By this means
the tensile strain is borne by the material of the belt principally, and not by the
screws and fasteners alone.
In case of the accidental fracture of the upper part G of the fastener, the safe
will continue to effectually connect the ends of the belt, until the part G can be
replaced, and it is for this reason that the safe is preferred to be used.
The nuts are formed as represented in the drawings with two flats on their sides
to enable them to be engaged by a spanner or key; otherwise, they are rounded or
domed to prevent their catching the hands or clothing of the attendants. The
provision of the tubular part below the head of the nut enables a shorter screw to
be used and considerably reduces the thickness from front to back of the fastener,
which is an object of considerable importance, as reducing the total projection of
the fastener from the normal surface of the belt.
When a four-screw fastener is used as represented by Figures 4, 5, and 6, two of
the screws are arranged respectively on opposite sides of the joint, and two of them
pass through the line of the joint. To enable a better grip on the ends of the belt
to be obtained by the parts of the fastener over the joint line, it is preferred to form
the washers and the cupped upper parts of the fasteners oval in plan as shewn in
the figures; and, because it is inconvenient to have different shapes of fasteners in the
same size, I prefer to form all the washers and all the cupped parts of the fasteners
similarly oval in plan. In the case of a torn or similarly injured belt, the fasteners
In such a case,
it
may advantageously be used for repairs as shewn by Figure 8.
is only necessary to make holes on each side of the tear, and connect the ends as for
a joint.
When the fasteners have to be used with crossed belts, or with cambered or
rounded pulleys, I use a number of the duplex fasteners as represented by
Figures 1 and 7, that is to say, fasteners with two bolts only, instead of the form
indicated in Figure 4, or fasteners having more than two cupped parts in the upper
plate G, which are suitable for straight drives with straight faced pulleys.
By means of these fasteners, short lengths of belt may be conveniently joined
together so as to form a continuous working belt.
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. In a belt fastener of the type hereinbefore described, an upper plate having
two or more cupped parts, constructed and arranged substantially as set forth and
as illustrated by the accompanying drawings.

page_text: 2. A belt fastener consisting of an upper plate having two or more cupped parts,
two or more cupped washers having teeth formed on their inner faces and projections
on their outer faces, two or more screws having recesses engaging the projections
on the washers, and a nut for each screw; constructed and arranged substantially
as hereinbefore described with reference to the accompanying drawings.
3. A belt fastener consisting of an upper plate having two or more cupped parts,
a similar number of screws having teeth formed on the inner faces of their heads,
and a nut for each screw; constructed and arranged substantially as hereinbefore
described with reference to the accompanying drawings.
4. In a belt fastener, the combination and arrangement with a cupped washer
having teeth formed on its inner surface and projections on its outer surface, of a
screw having nicks formed in its head capable of engaging with the projections on
the washer; substantially as herein before described with reference to the accom-
panying drawings.
5. In a belt fastener of the type hereinbefore described, and in which the two
ends of the belt form a butt joint, a "safe" having holes formed therein for the
passage of the screws, the holes being so arranged that the safe may be used as a
template; substantially as set forth with reference to the accompanying drawings.
Dated this 7th day of September A.D. 1891.
WILLIAM E. HEYS,
Agent for the Applicant.