Improvements in Bolt Belt Fasteners.
Year: 1898

page_text: Date of Application, 27th May, 1898
Complete Specification Left, 18th Feb., 1899-Accepted, 25th Mar.,
1899
Improvements in Bolt Belt Fasteners.
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:
con-
The primary object of this invention is to enable belt fasteners to be so
structed and used that they shall not be a source of danger in work through
engagement with the persons or clothing of work people and others.
In the type of fastener to which these improvements relate, there is a short bolt,
with or without a conical washer under the head, a pipe nut projecting into or
towards the belt and having a circular or non-circular flanged part, and a plate
through and upon which the nut and its flange fit.
According to my present improvements, I may make the plate single for a lap
joint, double for a narrow belt and butt joint, or multiple for wider belts either of
the lap joint or of the butt joint type. Around each bolt hole in the plate or plates
there is formed on the under side a concavity into which the substance of the belt
is forced in making the joint. On the upper surface of the plate or each plate there
is formed an annular groove concentric with the bolt hole into which groove the
flange of the nut may fit, and which will admit the ends of the key pins when the
nut is constructed to be rotated by a key having pins fitting into holes through
the nut flange. In the duplex type of fastener as constructed for butt joints,
I make gauge marks on each side of the plate to act as guides in making joints.
These gauge marks are arranged to come exactly over the joint. When the flange
of the nut is non-circular, it may be turned by a corresponding key and each key
may be constructed with a plurality of ends or parts to fit different sizes of nuts.
15
D 1000
Improvements in Bolt Belt Fasteners.
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
O the same is to be performed, to be particularly described and ascertained in and
by the following statement.

page_text: The primary object of this invention is to enable belt fasteners of the bolt type
to be so constructed and used that they shall not be a source of danger in work
through engagement with the persons or clothing of workpeople and others.
A belt fastener constructed according to these improvements consists of a short
bolt with or without a conical or cupped washer under the head, a nut provided
with a central screwed pipe or tubular part projecting into or towards the belt and
having a circular or non-circular flanged part, and a plate through and upon which
the nut and its flange fit.
According to the present improvements, the plate may be made single for a lap
joint, double ended for a butt joint in a narrow belt, or multiple for wider belts
either of the lap joint or of the butt joint type. Around each bolt hole in the plate
or plates there is formed on the under side a concavity into which the substance
of the belt is forced in making the joint. On the upper surface of the plate or of
each plate there is formed an annular groove concentric with the bolt hole into
which groove the flange of the nut may fit, and which will admit the ends of the
key pins when the nut is constructed to be rotated by a key having pins fitting
into holes through the nut flange. Instead of one groove only being formed to
admit both the flange of the nut and the key pins, separate grooves may be formed
for each. In the double ended type of fastener as constructed and used for butt
joints, central gauge marks may be formed or arranged to act as guides in inaking
joints. These gauge marks are arranged to come exactly over the joint.
When the flange of the nut is non-circular or is provided with a non-circular
part, the nut may be rotated by a correspondingly formed key or spanner, and
each key may be formed with a plurality of ends or openings to fit different sizes
of nuts.
In order that my invention may be more readily understood I have hereto
appended a sheet of drawings which illustrate different types of the improved
fasteners applied to different forms of joints. In referring to the drawings the same
letters of reference are used to indicate similar parts where they occur in the
different figures.
Figures 1 and 2 illustrate respectively in section and plan a single form of
fastener for use with a narrow lap joint. A and B are the ends of the belt: C is a
short bolt which passes through the overlapped ends of the belt and may or may
not have a washer placed under its head: D is a nut provided with a flange or
disc E and a central screwed tubular part of pipe F which engages with the
bolt C: and G is a plate formed with a concavity on its under side and arranged
between the nut D and the substance of the belt. On its upper or outer surface
the plate is formed with a concentric groove or recess into which the flange of the
nut tits, and which leaves a small space under the key holes H in the nut, so that
the pins J on the key K may be properly bottomed when the nut is being rotated.
A double ended key is shown in front elevation and partly in side elevation and
section in Figure 6.
Figures 3 and 4 represent also in section and plan respectively a double ended
plate for use with a narrow butt joint. Two of the concave and recessed plates G
are here shown cast or formed together, and are placed one on each side of the
joint. Each end of the plate is provided with a bolt and nut as hereinbefore
described and as illustrated. Projections L may be formed on the sides of the
fastener to assist in placing it centrally upon the ends of the belt.
In case a wide butt joint has to be formed several of these double ended plates
may be separately used and arranged across the belt at the joint, or several of them
may be formed in one multiple plate G as shown in Figure 5, which illustrates a
wide butt joint in elevation.
Similarly a wide lap joint may be formed by using several separate single plates
of the form illustrated in Figures 1 and 2, or by combining two or more such plates
into one multiple plate, and arranging the multiple plate across the joint.
As before described the upper surface of the plate may be formed with_two

page_text: grooves or recesses instead of one, so that one will receive the edge of the nut
Hange, and the other will form a space into which the key pins may project.
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. In a bolt belt fastener, a plate adapted to fit between the nut and the substance
of the belt and formed on its outer surface with a concentric groove or with
concentric grooves, for the reception of the nut flange and the key pins by means
of which the nut is rotated, formed and arranged substantially as hereinbefore
described and as illustrated by the accompanying drawings.
2. In a bolt belt fastener, a double ended plate formed with two holes each
surrounded by a concentric groove or grooves for the reception of the nut flange
and the key pins by means of which the nut is rotated, formed and arranged
substantially as hereinbefore described and as illustrated by the accompanying
drawings.
3. In a bolt belt fastener, a multiple plate formed with a plurality of bolt holes
around each of which is a concentric groove or grooves for the reception of the nut
and the key pins by means of which the nut is rotated substantially as herein before
described and as illustrated by the accompanying drawings.
4. A belt fastener consisting of a bolt with or without a washer under its head,
a nut provided a flange or disc and a screwed tubular part to engage with the bolt,
and a plate adapted to fit between the nut and the belt and formed on its outer
surface with a groove or grooves for the reception of the nut and the ends of the
key pins by means of which the nut is rotated, all constructed and arranged
substantially as herein before described and as illustrated by the accompanying
drawings.
'
5: In-a-belt-belt-fastener-for-use--with-butt-joints,-a-double-ended or multiple
plate-formed-or-provided-with-central-gauge-marks-or the like, substantially as and
for the-purpose hereinbefore-described-and-as-illustrated-by-the--accompanying
drawings.
-
Dated this 17th day of February A.D. 1899.
W. E. HEYS & SON,
Agents for the Applicant.