Improvements in Fasteners for Driving Belts.
Year: 1891

page_text: Date of Application, 14th Nov., 1891
Complete Specification Left, 18th July, 1892-Accepted, 27th Aug., 1892
PROVISIONAL SPECIFICATION.
Improvements in Fasteners for Driving 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 fasteners which are employed in making joints and
connections in driving belts.
In making such joints it is usual to employ screws or bolts on each side of the
joint connected across the top of the belt by straps duplex washers and the like.
Such a means for connecting the bolts and screws is described in the Specification
of Letters Patent granted to me No. 20050 dated the 5th December A.D. 1890.
According to my present improvements I materially strengthen and simplify
such fasteners by forming the opposed bolts or screws upon or securing them to,
a strap chain or plate which connects the bases of the screws or bolts together
across the joint.
When these connected bolts or screws are employed in combination with cupped
nuts or washers on the face of the belt as described in my former Specification,
I may if desired form domed or similar protuberances around the bases of the
bolts or screws for the purpose of pressing the substance of the belt into the cupped
parts of the nuts washers or plates.
The means for connecting the bolts or screws on the face of the belt may be the
duplex washers described in my former Specification, or it may be any suitable
plate or plates having holes formed therein for the passage of the points of the
screws or bolts. I prefer however that the under parts of the top plates shall be
cupped around the bolts and that the cups around each pair of bolt or screw holes
shall be connected by a groove or channel in such a manner that when the fastener
is tightened, the substance of the belt shall be forced up into the cupped and
channelled parts of the top plate or plates.
Dated this 13th day of November A.D. 1891.
WILLIAM E. HEYS,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Fasteners for Driving 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 fasteners which are employed in making joints and
connections in driving belts.
In making such joints, screws or bolts are sometimes employed in such a manner
that the screws or bolts pass through the substance of the belt upon opposite sides
of the joint, and are connected across the top by straps, duplex washers, and the
like. Such bolts and screws and the means for connecting them are described
in the Specification of Letters Patent granted to me No. 20050 dated the
9th December A.D. 1890.
According to my present improvements, I materially strengthen and simplify
such fasteners by forming the opposed bolts or screws upon, or securing them to, a
strap, link, or plate, which connects the bases of the screws or bolts together across
the joint.

page_text: I will particularly describe my improvements with reference to the accompanying
drawings, in which,
Figure 1 represents in elevation, a pair of the connected screws;
Figure 2, a plan and elevation of a modified form of the connected screws; and
Figure 3 a longitudinal section through a joint made with the type of connected
screws illustrated by Figure 1.
In the form illustrated by Figure 1, the ends of a suitable length of wire are
screwed, and the screwed ends A are then turned about parallel with each other,
as shewn. It will generally be found to be an advantage to flatten that part of the
wire B which is not screwed and which lies between the parallel parts.
When the connected bolts or screws AA are to be employed in combination
with cupped nuts or cupped washers on the face of the belt, as described in my
former Specification, I may, if desired, form domed conical or similar pro-
tuberances around the bases of the screws, as shewn at C C Figure 2. These
enlarged parts serve to press the substance of the belt into the cupped parts
of the nuts washers or plates.
As shewn in Figure 2, the connected screws have the equivalent of conical
heads, C C, and the bases of these heads are formed upon or secured to the plate
or connecting part B.
Figure 3 illustrates how the connected screws may be applied in making a
joint. D D are the ends of the belt which make a butt joint at E, in the
middle of the fastener: F F are nuts, and G is a cupped plate connecting the
upper ends of the screws above the joint. Both the nuts and the cupped plate
are the same as described in my former Specification. In substitution for the
cupped plate G, I may employ a Hat plate, or any other suitable device, or in some
cases I may omit it altogether, using only the nuts. It is preferred however in all
cases to employ a plate or means for connecting the ends of the screws above the
belt because of the greater strength and security thus ensured.
The upper plate G, as shewn by Figure 3, has a single cupped or dished part,
but if the form of connected screws shewn by Figure 2 be used, or any similar form,
I'may form two cups in the upper plate, and connect these two cupped parts by a
channel or recess as in my former invention, the two cupped parts being respectively
around the holes through which the ends of the screws pass. By this arrangement,
when the fastener is tightened, the substance of the belt will be forced upwards
into the cupped part or parts, and the strain will be to a great extent thrown
upon the top plate, thus relieving the screws.
I have described my invention as applied to two connected screws only, but I
desire it to be understood that I do not limit myself to this number nor to the
described means for connecting them. For example, four, six, or a greater.
number of screws may be formed upon or secured to a single connecting plate
or device, arranged in such a manner that equal numbers of the screws are upon
each side of the joint to be made with the fastener.
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 belt fasteners of the type hereinbefore referred to, connecting the bases
of the opposed bolts or screws, substantially as and by the means and for the
purpose set forth, and as illustrated by the accompanying drawings.
2. In a belt fastener, the combination and arrangement with an upper connecting
plate or washer, of two or more connected bolts or screws, substantially as herein-
before described and as illustrated by the accompanying drawings.
Dated this 16th day of Jule A D 1005
WILLIAM E. HEYS,
Agent for the Applicant.