Improvements in Elevators and Carriers and Apparatus for Transmitting Motive Power.
Year: 1888

page_text: Date of Application, 15th Dec., 1888
Complete Specification Left, 16th Sept., 1889-Accepted, 19th Oct., 1889
PROVISIONAL SPECIFICATION.
Improvements in Elevators and Carriers and Apparatus for
Transmitting Motive Power.
I, JOHN JAMES STEVENSON of 11 Queen Victoria Street, in the City of London,
Engineer, do hereby declare the nature of this invention to be as follows
--
This invention has for its object improvements in elevators and carriers and
apparatus for transmitting motive power.
For these purposes I employ a band and a pulley one driving the other as is usual
in machinery.
The band however I make of strips or ribbons of steel or other metal in short
lengths connected the one to the other by clips passed over the ends which are bent to
a suitable form. The pulley is grooved on its face at suitable distances apart to
admit the clips upon the band so that the hand cannot slip on the face of the pulley.
The clip may be in the form of a cylindrical tube split longitudinally.
The ends of the metal strips may be shaped in various ways-they may be bent at
right angles to enter the clip together and then separated and turned back to fill the
interior of the clip. The ends may either terminate within the clip or they may be
led out again and made to lie flat heneath the strips of which they form part so as to
give additional strength at the joint. Or the two ends of the strips may be separated
on entering the clip and bent round and inwards towards each other to fill the interior
of the clip. Or in place of turning the ends inwards a key or filling piece may be
driven into the clip between the separated ends of the strip. The clips are readily
detachable for adjusting the length of the band.
The external form of the clip in place of being cylindrical may be thickened at the
base where it meets the band to give additional strength. The clip may also bu
formed exteriorly like the tooth of a rack and the band may then be arranged to work
with a toothed wheel or pinion to drive or be driven by the same. In some cases [
form the clips of hard wood approximately
from which two corners are removed by saw cuts.
form or say as rectangular blocks
These saw cuts extend somewhat beyond the line of intersection and form grooves
which serve to receive the bent ends of the metal strips. Each strip at the end is
doubled flat on itself and the extreme end is then bent out at right angles. When
the wooden clip is slidden on to the strips so bent the extreme ends enter the saw
cuts extending up into the tee head, whilst the double thicknesses are received into
the saw cuts in the stem of the tee beneath the head.
1. 14th dow of Doncmber 1848
COMPLETE SPECIFICATION.
Improvements in Elevators and Carriers and Apparatus for
Transmitting Motive Power.
I, JOHN JAMES STEVENSON of 11 Queen Victoria Street in the City of London
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:-
This Invention has for its object improvements in elevators and carriers and apparatus
for transmitting motive power.
For these purposes I employ a band and a pulley one driving the other as is usual

page_text: The band however I make of strips or ribbons of steel or other metal in short
lengths connected the one to the other by clips passed over the ends which are bent to
a suitable form. The pulley is grooved on its face at suitable distances apart to admit
the clips upon the band so that the band cannot slip on the face of the pulley. The
clip-may-be-in-the-form of a cylindrical tube split longitudinally.
The ends of the motal strips may be shaped in various ways they may be bout
at right angles to enter the clip together and then separated and turned back to fill
the interior of the clip. The ends may either terminate within the clip or they may
be led out again and made to lie flat beneath the strips of which they form part so
as to give adilitional strength at the joint. Or the two ends of the strips may be
separated on entering the clip and bent round and inwards towards each other to fill
the interior of the clip. Or in place of turning the ends inwards a key or filling
piece may be driven into the clip between the separated ends of the strip. The clips
are readily detachable for adjusting the length of the band.
The external form of the clip in place of being cylindrical may be thickened at the
base where it meets the band to give additional strength. The clip may also be
formed exteriorly like the tooth of a rack and the band may then be arranged to
work with a toothed wheel or pinion to drive or be driven by the same.
In order that my said invention may be fully understood and readily carried into
effect I will proceed to describe the drawings hereunto annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a longitudinal section showing the general arrangement of a band
carrier arranged in accordance with my invention.
Figure 2 is a transverse section of the same.
Figures 3 and 4 show to a larger scale the means which I prefer for connecting
the strips or ribbons of which the band is composed. These Figuros also show guido
blocks and guides which I employ in connection with the band.
Figures 5, 6, 7 and 8 show other ways in which the ends of the strips or ribbons
may be connected in accordance with my invention. A A A are the strips or ribbons
of metal, they are made in short lengths and bent at the ends. BBB are the clips
which are passed over the bent ends of the strips or ribbons and which serve to hold
them together. CC Care guide blocks which I apply to the clips; these are arranged
to run in stationary guides of trough iron D. E is one of the pulleys around which
the carrier band passes. The carrier band is endless and there is a pulley at each
end. The pulleys are grooved at E' E' to receive the clips B. F is the axis of the
pulley. By any convenient mechanism one or both of the pulley axes are driven, and
so movement at the desired speed is imparted to the band. The materials to be con-
veyed are deposited on to the band usually near one of its ends, and are conveyed by
the band to its extremity where they are delivered.
Figures 3 and 4 show the means which I prefer for connecting the strips or ribbons.
The end of each steel band is bent round and doubled upon itself and secured by
rivetting in the manner shown. The clip B which is a slit tube of wrought iron is
thrust endwise over adjacent bent ends so as to hold them together. The guide
blocks are clamped on the clips. As will be seen, this guide block is slotted at C³,
so that the two sides or jaws C2, C3, of the block are capable of yielding to the
pressure of the clamping bolt D. Thus the block can be passed freely on to the
clip B from one end and when it is in place tightened thereon by means of the nut
upon the bolt. These blocks, and the guides Don which they stand, support the
weight of the material carried upon the band. G G are half round wires which I
prefer to insert into the loops formed at the ends of the strips or ribbons, as is shown
in Figure 3.
In Figure 5 another method of connecting the ends of the strips or ribbons is
shown; it is similar to that already described except that the bent ends terminate
within the clip in place of being led out again through the longitudinal slit formed
in it. This joint is not so strong as that previously described.

page_text: Figure 6 shows the clip made in the form of the tooth of a gear wheel; this form
may in some cases with advantage ho given to the clip and the teeth in passing can
then be caused to give motion to a pinion in order to perform any light work
connected with the delivery of the material on to the band or its discharge
therefrom.
Figure 7 is another form in which a round wire is driven in between the bent
ends of the strip or ribbon so as to separate them within the clip.
Figure 8 shows a similar joint except that instead of a cylindrical pin one which
is triangular is employed.
The band may be mounted so that its surface inclines upwards at a considerable
elevation, and, when so arranged, it will serve to convey the material deposited on it
from a higher to a lower level. Within moderate limits the band may be employed
to transmit motive power, so that the pulley at one end of the band being driven, the
band itself imparts movement to the pulley at the further end and from this pulley
another band, it may be at right angles to the first, may be driven.
These band conveyors may be used to carry a great variety of materials as wheat,
coal, cement and the like and it matters little whether the material be in powder,
grains or lumps, or hot, cold, wet or sticky, and if required they can be worked in
water.
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. Apparatus substantially as herein described consisting of an endless band made
of strips or ribbons of steel or other metal in short lengths bent at the ends and con-
nected the one to the other by clips passed over the bent ends and grooved pulleys
mounted upon axes holding the band distended between them and one or both of them
suitably driven as herein set forth.
2. In apparatus substantially as herein described the use of strips or ribbons of
steel or other metal connected as is shown by Figures 3, 4, 5, 6, 7 and 8 of the
annexed drawings.
Dated this 14th day of September 1889.