An Improved Belt Fastener.
Year: 1893

page_text: Date of Application, 5th Jan., 1893
Complete Specification Left, 29th Sept., 1893-Accepted, 18th Nov., 1893
PROVISIONAL SPECIFICATION.
An Improved Belt Fastener.
I, PIERRE PAILLOUX-MICHEL of Moulins in the Department of Allier in the
Republic of France, Leather Merchant, do hereby declare the nature of this inven-
tion to be as follows:-
This invention relates to belts or straps used for the transmission of power and
for like purposes.
It consists of a slightly curved plate in which are holes to receive small bolts and
nuts which pass through the plate and the end of the strap. The holes in the
plate are so formed as to prevent rotation of the bolts. This can be effected in
several ways, by varying the outline of the hole and forming, beneath the head of
the bolt a projecting collar, or a spur which resembles the hole, or engages there-
with, so as to lock the bolt.
A tubular screwed nut with a broad head, engages with the screwed pin of the
bolt. This nut has by preference two nicks or holes to receive the two points of a
driving key or turnscrew.
My belt fastener is attached to the ends of the belt by bringing the said_ends
together in a butt joint, and placing the plate across the line of junction. Holes
corresponding with the holes in the plate are then cut in the belt, and the bolts
and nuts are inserted and screwed tightly together by means of the turnscrew
described.
My invention is characterised by ease in application, great strength and efficiency,
and moderate cost. It can be made in any suitable size and of any suitable
material.
Dated this 5th day of January 1893.
S. S. BROMHEAD,
97, Newgate Street, E.C., Agent for Applicant.
COMPLETE SPECIFICATION.
An Improved Belt Fastener.
I, PIERRE PAILLOUX-MICHEL of Moulins in the Department of Allier, in the
Republic of France, Leather Merchant, 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 an improved method of joining belts or straps used for
the transmission of power and for like purposes.
It consists of slightly curved metal plates, and of small screw-rivets or bolts
with their shanks screwed, and of tubular nuts with countersunk heads, which
engage with the said bolts and both of which pass through the belt and plate and
secure the belt to the said plate or plates.
I will now describe the invention with reference to the accompanying drawings,
in which
Fig. 1 shows an elevation of one of the bolts with a projecting stud beneath
the head, and also a plan view of the bolt looking at the underside of the head.
Fig. 2 shows a corresponding elevation and plan of the tubular nut. B is the
head of the bolt. 6 is a projecting stud on the collar e under the head, and C is
the pin or screw.
Fig. 3, is a plan taken beneath the head of two other forms of bolt. In one of
these the collar c is square, and in the other triangular, and may be of any other

page_text: design; the object being that the collar shall engage with a similar shaped hole in
the metal plate, and be prevented from turning round and working loose with the
vibration of the strap.
Fig. 4 shows a plate with holes D cut to engage with the bolt shewn in Fig. 1.
Fig. 5 shows the same plate with the bolts B in position. The notches indicate 5
the line where the ends of the strap meet. The section E' shows the arch or curve
of the plate.
Fig. 6 shows the underside of a similar plate, with the heads of the tubular
nuts F in position as they appear when screwed on to the bolt-pins C. The
notches fare for screwing up or unscrewing by the forked turnscrew shown 1
in Fig. 13.
Figs. 7 and 8 show plates with circular holes without notches.
Figs. 9 and 10 show smaller single plates similar to 7 and 8 as regards the
bolt holes.
Fig. 11 shows a single plate with the bolt pins cast on the plate, or attached. 1
thereto.
Fig. 12 shows a sectional side elevation of the plate shown in Fig. 11, fixed to
the ends of a belt.
: .
B is the head of the bolt.
b is the projecting stud underneath the head of bolt.
C is the bolt pin.
c is the collar under the head of B.
D is the hole in the plate to receive the bolt.
E is the plate. El is a section-shewing-arch-of plate.
ff are the notches in the head of the tubular nut F.
Fis the hollow nut.
G is the tool for screwing up the nuts.
.H is the belt or strap.
My improved belt-fastener is used in the manner following. The ends of the
belt are brought together in a butt joint, and the plate or plates are placed across
the line of junction. The bolt holes are marked on the belt and the belt is punched
or pierced to receive the bolts, which are then placed through the plates and belts.
The tubular nuts are then screwed on the bolts by means of the turnscrew shown
in Fig. 13.
In the arrangement shown in Figs. 7 and 8 the collar c is dispensed with and
the fixing is effected by merely screwing up the tubular nut, which draws the
bolt into the centre of the aperture.
The third arrangement is that shown in Figs. 11 and 12 which consists of a
malleable cast iron plate with projecting pins which are screwed to engage with
the tubular nuts F. The fixing is the same as in the case just described.
My improved fasteners can be made in various sizes. and of any suitable
material.
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
A belt fastener consisting of an arched metal plate having fixed projecting
screws or holes fitted with loose bolts; such bolts being with or without projecting
studs and collars of any suitable shape, for engaging with holes of similar con-
figuration in said plates; said screws or bolts having loose tubular nuts with
annular notched heads, as herein described and set forth.
Dated this 29th day of September 1.893
S. S. BROMHEAD,
97, Newgate Street, London, E.C., Patent Agent.