Improvements in Belt Fasteners.
Year: 1892

page_text: Date of Application, 21st Dec., 1892
Complete Specification Left, 31st Aug., 1893-Accepted, 7th Oct., 1993
PROVISIONAL SPECIFICATION.
Improvements in Belt Fasteners.
I JAMES WALKER Commercial Traveller 748 Coventry Road Birmingham in
the County of Warwick do hereby declarc 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. 8488 dated 5th day of
May 1892. In these fasteners the belt is compressed between two corrugated, or
grooved plates, and a nut shaped to fit the transverse section of the side corruga-
tions of the top, or upper plates, or sections of the same, which are fully described
and drawn in my said Letters Patent No. 8488 before mentioned.
I form the under plate or section the same shape, only smaller, as the upper side
corrugation or groove, in which a countersink or hollow is formed to receive the
head of the bolt, or screw, which may be round, oval, square, or oblong square
shaped.
But, I prefer where practicable to use round solid headed bolts, or screws,
without teats, projections or notches as commonly used-but, if necessary to prevent
turning when screwing up the fasteners, teats, or notches, may be placed on the
section plates top, and bottom, or upon the bolt heads in suitable manner.
In some cases I should prefer to place rubber, leather, or other similar yielding
substances under the heads of the bolts, or screws to prevent turning, or oscillation,
and also to form a cushion to deaden the impact of the fasteners upon the faces of
the pulleys when the belts are in motion.
In use the fasteners will draw the belt together up into the side corrugations, or
grooved transverse channels of the upper plates, in one continuous line across the
whole face of the top side of the belt, equally in every part, forming a clearly
defined ridge from side to side which will provide such a good gripping surface as
will absolutely prevent the ends of the belt from drawing away from underneath
the top plates, and also prevent the straining, and breaking, of the bolts, or screws.
passed through the entire body of the joint so made.
The nut is formed on the under side or base, the same shape as the corrugation on
which it rests, so that when screwed down it locks itself by simply passing over the
centre of transverse part of the corrugation, or groove, and may be made with, or
without, a tube or shark at the base as would be most advantageous for each belt
joint.
Where the top plates previously described are not used, the sectional plates of
same shape may be used in rows, which would have practically the same effect in
securing two ends of a belt together as in lapped joints, and saddle back joints, as
when the top plates are used to form the butt joint previously described.
Dated this 20th day of December 1892.
JAMES WALKER.
COMPLETE SPECIFICATION.
Improvements in Belt Fasteners.
I, JAMES WA KER, Commercial Traveller, 748 Coventry Road, Birmingham
in the County of Warwick 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 and is a further developement of the belt
fastener invention described in the Specification No. 8488 dated May 5th 1892.

page_text: The essential feature of this later invention is the utilization of short concave
guttered or channeled plates on the upper side of belts, in conjunction with short
convex hollowed plates on the underside of belt, a bolt passing through the two
plates and through the belt; the tightening of the bolt compressing the belt into
the grooved upper plates and thus forming a corrugation on the belt at the juncture
of fastenment as hereinafter fully set forth.
I will now proceed to fully describe the nature of my invention in relation to the
drawings accompanying this Specification.
Fig. 1 represents a section of Figure 2 on the line A B.
Figure 2 represents a plan of Fig. 12.
Fig. 3 represents the connecting bolt and nut in elevation.
Fig. 4 represents a bossed nut in elevation.
Fig. 5 represents a plan of Fig. 3 exclusive of the nut.
Fig. 6 represents an elevation of under washer.
Fig. 7 represents a plan of the upper surface of Figure 6.
Fig. 8 represents a plan of the lower surface of Fig. 6.
Fig. 9 represents a plan of Figure 11.
Fig. 10 represents an elevation of Figure 9.
Fig. 11 represents an end elevation of top plate.
Figure 12 represents a side view shewing a belt secured together by means of
improved fasteners such belt resting on a pulley.
Fig. 13 represents a plan of Figure 14.
Fig. 14 represents the improved fasteners used to make a saddle back joint.
In carrying out my invention I provide a quantity of the guttered top-plates a
I next provide a quantity of the under washers 6 I next provide a quantity of
bolts c and also a quantity of nuts d. In making a lap joint I pass the upper end e
of belt over the lower end providing suitable holes to receive the bolts I next
connect the series of plates to the belt as shewn in plan at Figure 2 the spurs g in
the under washers gripping the belt and securing the underwashers in position
during the rotation of the nuts, the rotation of the outer nuts d compresses the
material constituting the belt into the concave part of upper washers a thus
formning a semicircular ridge or corrugation across the face of belt as shewn at j,
the ridges are not shewn fully drawn into the plates in Figure 12 such view being
provided to shew in an exaggerated manner the concave gutter m formed on the
underside of belt; the boss k is provided on the nut to take a bearing over the bolt
and so prevent the threads of the bolt rubbing against the sides of holes / in upper
washers such holes being made large enough to receive the outer surfaces of the
boss k.
The utilization of the improved guttered plates a in the making of belt joints,
forms the concave gutter or space m on the underside of belt, such concave part 4
being suitable to receive the under washers b and also the heads of the bolts a, the
bolt heads and the under washers being drawn into the concave gutter or space m
by the screwing up of the nuts d.
It will be apparent that the bolt heads will all miss the face of pulley over which
the belt works.
4
In using my improved fasteners to make a saddle-back or butt-joint I proceed in
the manner herein before described in reference to a lap joint excepting that a
saddle back part o is provided as shewn at Figure 14, the corrugations being
formed on the upper surface of the saddle back as clearly shewn at Figure 14.
The drawing Figure 13 shews the underside of belt, the gutters p being formed 5
by the tightening up of the nuts d².
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 :-
:-
1st. A belt fastener, consisting of a guttered top plate a, a convex bottom plate 5
or washer b a bolt and out a

page_text: 2nd. The making of a belt joint with outer convex corrugated surfaces, an l
inner corrugated concave surfaces, by means of guttered top plates and convex
bottom plates, the two ends of the belt being secured together between the top and
bottom plates as illustrated and described.
3rd. In a belt fastener the utilization of a top plate of any suitable dimensions,
such top plate being guttered to form an arch, the two side edge-faces of the arch
taking a bearing on the outer surface of belt, so that the material constituting the
helt can be drawn up into the plate gutter thus forming a ridge or corrugation on
the upper surface of belt.
Witness:
JAMES WALKER.
ALFRED WM. TURNER,
Patent Agent,
Cobden Buildings, Corporation Street, Birmingham.