Improvements in Chain Conveyors.
Year: 1893

page_text: Date of Application, 15th June, 1893-Accepted, 29th July, 1893
COMPLETE SPECIFICATION.
Improvements in Chain Conveyors.
I, MATTHEW HENRY LARMUTH of Todleben Iron Works, Cross Lane Salford
in the County of Lancaster, Engineer, do hereby declare the nature of this inven-
tion, 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 chain conveyors in which the material to be conveyed is
scraped or pushed along the bottom of a cast iron or other trough by means of
scrapers attached to a travelling chain, and consists in an improved arrangement or
construction of said conveyors by means of which the material to be conveyed is
partly supported or carried by the scrapers, the object of my invention being to
reduce the friction of said material on the bottom of the trough and to save wear
and to economize the motive power required to drive the conveyor.
My improvements are particularly illustrated on the accompanying sheet of
drawings, on which
Fig. 1, shows a side view of the improved scraper and chain with the trough in
section.
Fig. 2, a plan of the same.
Fig. 3, a cross section on line x y of Figs. 1 and 2.
Fig. 4, a side view with the trough in section and
Fig. 5, a plan of the improved conveyor showing the general arrangement of the
same on a reduced scale.
In carrying out my invention I arrange a chain of the double flat link or ladder
type in a position at a right angle to that generally used, by placing the chain-
pulleys KK horizontally upon vertical shafts, which position imparts rigidity to
the chain in a vertical direction and enables it partly to support its own weight
and to resist vertical bending strains. In every alternate double link I preferably
make the lower link A broader than the rest of the chain links and bolt by bolts a
or otherwise attach to or form with the same in one piece a bracket or wing
attachment B provided with a curved face C to which is bolted by bolts bor
otherwise fixed a thin scraper or carrier D. This scraper is curved to such a radius
or curve that the material to be conveyed will partly rise or mount on the scraper
and thus be partly supported or carried by it and partly be scraped along the
bottom of the trough, but that in no wise any impediment will be caused to its
discharge when the material is to be delivered through the opening or openings in
the bottom of the trough. I also arrange a bar or axle E which is fixed in the
boss F, cast or formed on the ring bracket B, and provided at each end G G with
a preferably flanged wheel H, mounted on pivots formed on said axle, which wheels
roll on the top edges of the trough J and keep the scrapers off the bottom of the
trough and support the weight of the chain and scrapers. L is the hopper for
supplying the conveyor with the material to be forwarded. As already mentioned,
the link A may be cast or formed in one solid piece with the wing bracket B or the
latter may be bolted thereto as shewn on the drawings or rivetted thereto.
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 chain conveyors the arrangement of horizontal chain pulleys on vertical
shafts and double flat link chain to which scrapers are attached, substantially as
hereinbefore described and illustrated.
2. In chain conveyors the arrangement of curved wing brackets B and curved
scrapers or carriers D substantially as and for the purpose set forth.

page_text: 3. The general arrangement of a chain conveyor or combination of the parts
thereof substantially as hereinbefore described and illustrated by the drawings.
Dated the 14th day of June 1893.
R. J. URQUHART,
57, Barton Arcade, Manchester, and 5, Clayton Square, Liverpool,
Consulting Engineer and Patent Agent.