Improvements in Fastenings for Driving Belts and the like.
Year: 1890

page_text: Date of Application, 10th Sept., 1890
Complete Specification Left. 4th June. 1891-Accepted. 15th Aug.. 1891
PROVISIONAL SPECIFICATION.
Improvements in Fastenings for Driving Belts and the like.
HENRY ALEXANDER Primrose Street Alloa Superintendent of Wood Working
Machinery do hereby declare the nature of this invention to be as follows:-
That it has for its object the securing of the joinings of leather or other belting
by screws which require no nuts or sockets. Its novelty consists in that by using a
special screw made of either iron, copper, brass or other metal, it joins and fastens
the ends or other parts of belting securely.
The specialty in the screw being that it is cut close to the neck on a cylindrical
core and may be either with or without taper but with a perforating point.
The special point and idea of my invention being to supersede and replace the
present mode in which belting is joined, instead of lacing or rivetting to join piece
to piece by screws.
Dated this Wifth day of Santember 1890
COMPLETE SPECIFICATION.
Improvements in Fastenings for Driving Belts and the like.
I, HENRY ALEXANDER of Primrose Street, Alloa, North Britain Superintendent
of Saw Mill Machinery 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 :-
That it has for its object the securing of the joinings of leather or other belting
by screws which require no nuts or sockets. Its novelty consists in that by useing
a special screw made of iron, copper, brass or other metal it joins and fastens the
ends or other parts of belting securely. The speciality in the screws being that
they are cut close to the neck on a cylindrical core and may be either with or
without taper, but with a tapering point.
The special point and idea of my invention being to supersede and replace the
present mode in which belting is joined. Instead of lacing or riveting, to join
piece to piece by screws on both sides of the joining.
In order that my invention may be more properly understood and readily carried
into effect have hereunto appended one explanatory sheet of drawings, in the
several figures of which, corresponding parts are marked with the same letters of
reference.
Figure 1 is a plan, Figure 2 is a longitudinal section taken on the line x, y,
Figure 1, of a joint or fastening of a portion of leather or other analogous belting
made in accordance with, and constituting, my invention, and Figures 3 and 4
illustrate two kinds of screws of special construction to be used in connection there-
with, and hereinafter more fully described.
A, represents an upper piece of one end of a driving belt, and B, the lower piece
of the same belt. The two said pieces respectively being chamfered as is usually
done to form a joint, and being brought together are held securely in that position
by screw nails.
C, represents the screw nails (of which there are six in number) which enter
from the top of the upper piece A, and pass through the lower piece B, clamping
them, so far, rigidly together.
D, represent the same number of screw nails which enter from the bottom of the
lower piece B, and pass upward through the aforesaid upper piece A. By this
'

page_text: means of equally distributing the screw nails along the joint a connection is formed
stronger, and more durable than what has hitherto been attained. And it will be
obvious, by using screw nails (constructed according to my invention, and illustrated
in Figures 3 and 4 of the drawings) which have a deep thread, and threaded up to
the conical head of the screw, or nearly so, the greatest tenacity is obtained und
which I have found in practice to remain unimpaired even when the conical heads
have been worn away.
The tapering points of the screw nails C, and D, after being screwed home are
filed or otherwise cut off as shewn at Figure 2.
It is herein explained that I do not confine myself to the precise mode of dis-
tributing the screws in the upper and lower pieces of belting, as shewn, to the
exclusion of other and similar modes which may be suggested by the exigencies of
divers cases.
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 improvements in fastenings for driving belts and the like, the use and
employment of screw nails constructed with such depth of thread and so threaded
that the gentest tenneity is obtained substantially as herein described.
2. In improvements in fastenings for driving belts and the like, the distributing
of the screw nails on both sides of the splice, seam or joint so as to obtain an equal
tenacity substantially as hereinbefore described and shewn on the accompanying
sheet of drawings.
Dated this 2nd day of June 1891.