Improvements in Belt Fasteners.
Year: 1889

page_text: Date of Application (in United Kingdom), 16th Oct., 1889
Complete Specification Left, 16th Oct., 1889-Accepted, 23rd Nov., 1889
COMPLETE SPECIFICATION.
Improvements in Belt Fasteners.
I, WILLIAM HENRY BRISTOL, of 402 Garden Street, Hoboken, in the County of
Hudson, and State of New-Jersey, in the United States of America, Mechanical
Engineer, 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 :-
My invention relates to improvements in metallic belt fasteners, and especially to
that class of fasteners having continuous bodies with projecting spurs or teeth.
Primarily, the object of my invention is the production of a metallic fastener of the
above described character, which shall possess sufficient flexibility to accommodate
itself to the twist of the belt. In addition to this, I desire to produce a fastener
which can be manufactured with increased economy, both in material and in time.
With the above objects in view, my invention consists essentially in a metallic belt
fastener having projecting spurs alternating on opposite sides of the body thereof, the
recesses between the spurs being extended to form a continuous zigzag or sinuous
body, whereby the said body is rendered flexible and the fastener will accommodate
itself to changes of form in the belt.
In the accompanying drawings:-
Figure 1 represents a face view of a blank as cut preparatory to striking up the
spurs.
Figure 2 represents a section of the sheet from which the blanks are cut, the broken
lines representing the successive blanks.
Figure 3 is a perspective view of a completed blank.
Figure 4 is a sectional elevation showing the spurs driven through a belt.
Figure 5 is a similar view showing the spurs clinched.
Similar letters indicate corresponding parts throughout the several views.
In these drawings, referring at present to figures 3, 4 and 5, the letter a designates
the body of the fastener, and b, b, are the spurs alternating on opposite sides of the
body. The recesses between the spurs are extended into the body of the fastener to
form a continuous zig-zag or sinuous body with spurs projecting from the outer
angles or bends thereof, the spurs being bent at approximately right angles to said
body and properly pointed, so that they can be readily driven through the belt. The
spurs are clinched in the usual manner.
In practice I prefer to make the fastener of sheet steel, but it can be made from
any other material possessing the requisite degree of tenacity. It will be readily
understood that this zig-zag or recessed form of the body of the fastener renders it
flexible as a whole, and therefore the fastener can bend or twist to accommodate
itself to the twist of the belt, or to the curvature of the latter caused by coning the
pulleys.
In the manufacture of my improved fastener, I punch or otherwise form a blank of
sheet metal (figure 1) having spurs alternating on opposite sides and angular recesses
between the spurs, the inner ends of the recesses of one side projecting beyond the
inner ends of the recesses of the opposite side. This form of blank can be successively

page_text: punched from a strip or sheet of metal without waste, since the recesses formed in one
side of one blank, leave metal for the spurs of the next succeeding blank..
It is not necessary however that the inner ends of the angular recesses overlap each
other, but of course by causing the same to overlap, greater economy in material is
accomplished, and a more flexible body is obtained.
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
As an improved article of manufacture, an elastic belt-fastener formed of metal into
a continuous zigzag or sinuous body having spurs alternating on opposite sides of a
longitudinal centre line, said spurs being bent so as to extend at right angles or in
parallel planes all in the same direction as set forth.
101
ACORDO way
ԱՆՆՄԱՆ 1009.
WILLIAM HENRY BRISTOL.
By Harris & Mills,
23, Southampton Buildings, London, Agents.