Year: 1887

page_text: Date of Application, 13th Aug., 1887
Complete Left, 9th May, 1888
Complete Accepted, 15th June, 1888
ISAAC JACKSON Saddler &c. 2 High Street East, Glossop, Derbyshire, do hereby
declare the nature of this invention to be as follows:-
This invention relates to the means of connecting the ends of driving Belts of
any description, and these improvements have for their object to provide a simple, and
durable connection for either a lapped, saddle back or endless jumped joint, being
specially adapted for Woven, and India Rubber Belting.
This invention consists in attaching a Bolt or Bolts with two specially made counter-
sunk Washers in any shape, (" but we prefer them oval or Lemon shape,") through
the splicing or double of the Belt either in a lapped, saddle back, or endless jumped
joint, or connection.
The Countersunk Washer which we place on the driving side of the Belt is made
rather thinner and lighter than the one on the top or outside, it is hollowed or counter-
sunk in such a manner that the head of the Bolt fits perfectly flat in the hollow or
countersink; the edge or rim of the Washer is made flat all round, being bevelled
on the edge, the countersink only being in the centre, through being so it allows the
Washer to imbed itself level in the body of the Belt, the hole cut through the
Washer to admit of the shoulder of the Bolt is cut from the rounded, and not from
the hollowed side, in a slanting direction, and is made oval or lemon shaped,
the shoulder of the Bolt is also made oval or lemon shaped, which prevents the
Bolt turning round when being screwed up, the hole in this Washer being cut from
the rounded side in a slanting direction, and being rather larger on the side against
the Belt, it allows the Bolt head to work smoothly, or to slightly give or rock when
bending over the pulley or drum; which would not be the case if the hole was cut
straight, as it would then work stiff or rigid. The oval hole in the Washer is cut
contrary way to the lemon shape of the Washer itself, through being so it materially
assists the slight moving or oscellation of the Bolt, and consequently it allows the top
splice or saddle back to give when passing or bending over the pulley, this loose Bolt,
or shank overcoming the rigid connections which are produced by using ordinary
straight Bolts.
The Countersunk or raised Washer which is placed on the top side of the Belt is
scarcely hollowed as much as the one on the driving side, this Washer is made larger

page_text: having a good flat rim all round, this Washer is placed with the flat side against the
Belt, the reason for this being to provide room in the raised hollow for the substance
of Belting which is pushed up by the hollowed washer on the bottom to fill up and
imbed itself in the raised hollow of the Washer on the top.
These two Special Washers, form a thorough oilet hole connection being thoroughly
solid without either breaking or cracking the Belt between the Washers or in the
least breaking the edges of the hole which the Bolt goes through.
The Bolt which connects or binds the two countersunk Washers is made with a
round shank, an oval shoulder and a lemon shaped or oval head, this Bolt is inserted
through the Washers and Belt as explained before, and tightly screwed up, when
done so it forms the best and most durable connection for Woven Belts, I have seen
during my long experience.
We also claim the right to insert a cotter, instead of a nut, through the shank of
the Bolt, the length of the Bolt between the head and the hole for the cotter, is made
exactly the length of two thicknesses of Belting, or longer, or shorter, as found most
practicable, the Bolt to be made any shape in the shank with any shape of cotter.
For Electric or Fan where terrific speed, and evenness of driving are required, we
place or jump the two ends of the Belt together in an upright position and insert
Washers and Bolts as required, which are attached in every respect through the double
Belt, as in the lapped or saddle back joint, with this exception, we alter the shape of
the Washers making them round at the top, and raising a flange on the bottom, this
flange acting as a preventative to cutting the Belt when on the stretch as the Belt
lies perfectly flat against the flange or flanges, between the edges of the Belt which
stand upright when on the stretch, we place a piece of Leather or rubber so as to
make a perfectly even surface, and a perfect endless connection without the least
jump.
The main improvements in this invention and the reason of its superiority over
other Bolt Fasteners, consist in the Special Washer on the driving side, against which
the head of the Bolt works, the looseness of the Bolt when working, produced by
the special hole & form of the Bolt shoulder and Washer, and the solid unbroken
oilet hole connection which is formed by the two washers and Bolt combined.
Dated this 11th dan s A 1007

page_text: Improved Bolt Fastener for Connecting Driving Belts and Bands.
I, ISAAC JACKSON 2 High Street East, Glossop in the County of Derby Saddler,
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 apparatus for connecting together the ends of driving
bands or belts, and its objects are, to improve and simplify such joints or connections,
and to render them more durable.
The fastener constructed according to these Improvements consists of two plates
or washers, a bolt, and a nut or a cotter. Each washer or plate is stamped or pressed
so that it is concave on one side and convex on the other. In making a joint a hole
is made through the double belt; and the washers are placed with the convex side of
one and the concave side of the other next to the opposite surfaces of the belt.
bolt is then passed through the hole and the washers, and the whole is screwed up or
secured by a cotter.
The
By this means the two washers are drawn together and that portion of the belt
between them is forced out of line with the rest of the belt and enters the concave
washer. An improved grip is thus obtained, the strain being distributed over the
area of the washers. The washer with the convex gripping surface next to the belt,
hereinafter called the convex washer, is the one which passes next to the pulley wher
applied to a lapped joint, and contains within its concavity the head of the bolt,
which lies level with the driving surface of the belt. To allow the bolt to oscillate
or rock slightly when passing round the pulley, the hole.through the convex washer
may be made taper so that its diameter next to the belt is larger than its diameter
next to the bolt head. To prevent the bolt turning during screwing up the unscrewed
part of the shank of the bolt and the hole through the convex washer are made non
circular, and, by preference, oval. The concave washer is larger than the other and is
provided with a flat rim all round and is scarcely hollowed so much as the conver
washer.
In the case of a "jumped joint" that is to say a joint in which the ends of the belt
are bent approximately at right angles to the rest of the belt and laid face to face,
the bottom edges of the two washers are bent backwards or flanged, so that there is
no tendency to cut or otherwise injure the belt at the bend. Instead of using a nut,
a cotter may be inserted through the bolt which may then be made with a round
or other shaped shank.

page_text: I may also substitute for the convex and concave washers two trough shaped or
approximately semi-tubular plates, the concave side of one and the convex side of the
other being as before the belt gripping surfaces.
<
And in order that my said Invention may be more clearly understood I have
hereunto appended a sheet of drawings to which reference is hereinafter made, similar
letters being used to indicate similar parts where they occur in different figures.
Fig. 1. illustrates the form of fastener used for a lapped joint," and Fig. 2, is a
plan of the concave-washer or plate employed. Fig. 3 shews the fastener used for
making a "jumped" joint; Fig. 4, shows the concave washer used in this type of
joint, and Fig. 5, is a section through the bolt C Fig. 3, and shews the convex-washer
perforated with an oval hole through which passes the oval shank of the bolt to
prevent the bolt turning in the washer. Figs. 6 and 7 are views of the curved or
trough shaped plates flanged for use in a jumped" joint. In all these views A
represents the convex washer or plate, B the concave washer, C the bolt, and D
the nut.
"
The head E of the bolt lies flush within the hollow side of the concave washer.
K, Figs. 1 and 2 is the flat rim surrounding the concave washer so as to prevent
cutting of the belt.
Figs. 8 and 9 are respectively an elevation and a section of a "lapped" joint made
by means of my improved fastener. As before, A is the convex washer; B the concave
washer C the bolt, and D the nut. F and G are the two ends of the belt. The hole
through A is tapered, and is larger on the side next to the belt F than it is on the
side next to the bolt head E. By this means the bolt C is allowed to rock or move
slightly out of its normal position as the joint passes round the pulley. The same
result may be attained by making the under surface of the bolt head of slightly less
curvature than the plate with which it is in contact, either in conjunction with the
tapered, hole or by itself.
Fig. 10 is an elevation of a "jumped" joint, the plates used being those shewn in Figs 6
and 7. F and G are the ends of the belt and are bent approximately at right angles to
the rest of the belt and parallel to each other. The plates A and B are then placed one
on each side of the joint and screwed up, suitable holes for the passage of the bolts having
previously been formed. All danger of cutting the belt at the bends is obviated by the
flanged lower edges of the plates A B. His a piece of felt or similar suitable
material inserted between the ends F and G so as to form a continuous driving
surface by means of its lower edge. Fig. 11 is a section either of the joint shewn in
Fig. 10 or of a joint made by the plates shewn in Figs. 3, 4, and 5. As before A is
the convex washer, B the concave washer, C the bolt, D the nut, E the bolt head,
F and G the ends of the belt, and H the interposed piece of felt or other material.
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) A bolt fastener for connecting the ends of driving bands or belts consisting of a
bolt, a cupped or curved washer having the convex side towards the belt, a second
cupped or curved washer having its concave side towards the belt, and a nut or
cotter; substantially as and for the purpose set forth and illustrated by the annexed
drawings.
(2) In a bolt fastener for connecting the ends of driving bands or belts vertically
by means of a bolt two cupped or curved washers and a nut or cotter; flanging the
lower ends of the washers; substantially as and for the purpose set forth and as
illustrated by the appended drawings.
(3) In a bolt fastener for connecting the ends of driving bands or belts by means
of a bolt, two cupped or curved washers and a nut or cotter; a bolt having a non
circular and preferable oval stem in combination with a similarly shaped hole in the
washer next to the bolt head; substantially as hereinbefore described.
(4) In a bolt fastener for connecting the ends of driving bands or belts by means

page_text: of a bolt two washers and a nut or cotter ; cupped or curved washers, of which one
washer is arranged with its convex surface next to the belt while the other washer is
arranged with its concave surface to the belt; substantially as described and as
illustrated by the appended drawings.
(5) In a bolt fastener for connecting the ends of driving belts or bands by means
of a bolt two washers and a nut or cotter; a cupped or curved washer, the concave
side of which is placed against the belt and which is formed or provided with a flat
surrounding rim substantially as and for the purpose set forth and as illustrated by the
accompanying drawings.
Dated this 20th day of Februar An 1000
WILLIAM E. HEYS,
Agent for the Applicant.