Improvements in Link Belting.
Year: 1893

page_text: Date of Application, 11th Oct., 1893
Complete Specification Left, 10th Feb., 1894-Accepted, 10th Mar., 1894
PROVISIONAL SPECIFICATION.
Improvements in Link Belting.
I, JOHN DENISON WALTON of 48, St. Enoch Square, Glasgow, Lanarkshire,
North Britain, Machinery Agent, do hereby declare the nature of this invention to
be as follows:-
This invention relates to improvements in link belting, particularly leather link
belting. I stamp out the centre portion of each of the links so as to produce an
oblong slot or hole. Into the said slot I insert a flat metallic hoop or link preferably
of steel or brass and preferably seamless. The sides or top and bottom of the links
are preferably made slightly concave or convex that is to say bulging in towards or
out from the centre of the link. Instead of the breadth of the links being of a flat
surface it may be concave or convex in addition to the same formation being given
to the length of the links. The said construction of the links of the belt gives
elasticity without allowing the belt to stretch that is to say to become loose. Any
equivalent construction may be given to the links to give elasticity.
Dated this 10th day of October 1893.
JOHNSONS,
115, St. Vincent Street, Glasgow, Petitioner's Agents.
COMPLETE SPECIFICATION.
Improvements in Link Belting.
I, JOHN DENISON WALTON, of 48 St. Enoch Square, Glasgow, in the County
of Lanark, North Britain, Machinery Agent, 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 improvements in link belting, particularly leather link
belting, and has for one of its objects to give the belt elasticity without allowing
the belt to wear loose. This I effect by the insertion of a steel or other
metal link within the centre portion of each or of two or more of the leather links,
in the manner shown in the accompanying drawing.
Figure 1 is a perspective plan.
Figure 2 a sectional plan through a pair of leather links.
The metal link a which is inserted within the centre portion of a pair of the
leather links as shown, is preferably formed from a seamless tube and flattened
as shown, the ends of the metal link receiving the transverse pins c by means of
which the links are bound together so as to form a flexible linked belt.
As shown in the drawing the upper and underside of the metal link is slightly
collapsed which said construction renders the said metal link slightly clastic
lengthways so that the whole belt readily gives out or contracts as required, so as
to prevent the belt being run unnecessarily tight or wearing loose. The hole in
the leather link for the reception of the metal link is preferably slightly contracted
toward the centre of its length in order to correspond with the probable normal
shape that the metal link a will assume when the belt is in use but always allowing
a certain space between the metal link and the leather link for the expansion of the
former.
Instead of the breadth of the metal link being of a flat surface it may be
concave or convex in addition to the same formation being given to the length
of the links, so as to strengthen the link or give further elasticity to it.

page_text: In accordance with my improved belt, in working over pulleys of moderate size
the hinge movement is practically nil, and thus the wear on links is inappreciable.
In the case of ordinary link belting the eyes close on the pins, but not so the
steel links, which work easily, avoiding loss of power through stiffness. Also, in
accordance with my improved belt both sides of the belt being always taut, due to
the positive pull continuously exerted by the spring action of the links, a larger arc
of the periphery is embraced, giving greater frictional contact, and, consequently
greater transmitting power.
Also the tension can be well regulated the greatest or gentlest force applied.
Belts being usually run unnecessarily tight, entails great loss of power by
excessive friction, and strain on journals and bearings, and necessitates more
frequent lubrication and renewal. Also by my improvements, smooth driving is
ensured all jerks and impulses being taken up by the links, and given off smoothly
and evenly. The belt can be run in the dampest or hottest places. It is not
affected by changes of atmosphere.
;
The leather links at the outside edges of the belt need not be provided with the
metal links, as shown in Figure 1.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I would observe in conclusion
that I do not limit myself to the precise arrangements herein before described and
illustrated, for example any equivalent formation may be given to the metal links
for the purpose of giving the required elasticity, for example the curvature may
be of an opposite kind to that shown in the drawings that is to say it may be
outwards instead of inwards,-convex instead of concave.
Also instead of a metal link being embedded within a pair of the leather links,
I may embed it within a single leather link or within more than two leather
links.
My improvements are also applicable to link belting of any analogous material to
leather; but what I claim is :-
1. The improvements in link driving belts substantially as described and shown
in the accompanying drawings.
2. The metal linke a substantially as and for the purposes herein before described
and shown in the accompanying drawings.
Dated this 8th day of February 1894.
JOHNSONS,
115, St. Vincent Street, Glasgow, Applicant's Agents.