An Improved Conveyor Chain.
Year: 1895

page_text: Date of Application, 21st Dec., 1895
Complete Specification Left, 18th Sept., 1896-Accepted, 24th Oct.,
1896
An Improved Conveyor Chain.
We, HENRY HACK, M.I.C.E., of the City Gas Works, Saltley, Engineer, and
THOMAS PIGGOTT AND COMPANY LIMITED, of Spring Hill, Engineers, all in
the City of Birmingham, do hereby declare the nature of this invention to be as
follows:-
Our invention relates to conveyor chains, and our object is to produce a chain of
greater accessibility and durability than is at present in use.
Our invention consists in a new arrangement of wearing parts of conveyor
chains, and further in a combined conveyor pan and chain..
In carrying our invention into effect according to one modification, we cast a
cast malleable iron pan in one with the chain part, the said chain part being cast
beneath each pan. The chain part of each pan consists of two longitudinal pieces
terminating in bored facings or eyes. At one end of the chain part, the opposing
working faces are made sufficiently narrow to fit within the opposing working faces
of the other end of the next link. Each pan thus shows in bottom plan a wide
end of the link, and a narrow-end. Through each narrow end we pass a hard steel
bush or case-hardened bush. Each bush firmly connects the two opposing sides of
the narrow end of the link, leaving between the inner sides of the link ends a
Each narrow
space sufficiently wide to pass over the sprocket or chain wheel.
end of the chain part is slipped within the wider ends of the next link, and is
connected to the wider end by a bolt or pin passed through the bush, and the wider
and narrower ends of the links in line with each other.
By this device the bush is exposed underneath, and is free to gear into the
sprocket wells or hollows of the sprocket or chain driving wheel. The bolt or
pin is fastened in any convenient manner, and in some cases the roller is substituted
for the bush.
The conveyor pans are caused to lap over at the points of junction above the
connecting bolts or pins, in order to prevent the substances conveyed from falling
through. The bush may either be firmly fastened, or it may be arranged to act as
a roller rolling upon the pin.
It is to be understood that the invention consists partly in the new arrangement
of conveyor chain link and bush or roller, and partly in the combination of the
conveyor pan, and chain, but the invention may be applied without casting
the conveyor pan in one-with the chain.
Our combined conveyor chain and pan may be used for conveying coal, cold or
hot coke, or for any other purpose for which a conveyor is required.

page_text: An Improved Conveyor Chain.
We, HENRY HAck, M.I.C.E., of the City Gas Works, Saltley, Engineer, and
THOMAS PIGGOTT AND COMPANY LIMITED, of Spring Hill, Engineers, all in
the City of Birmingham, 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 :-
Our invention relates to conveyor or elevator chains, and our object is to
produce a chain of greater accessibility and durability than is at present
in use.
Our invention consists in a new arrangement of wearing parts of conveyor
chains, and further in a combined conveyor pan and chain.
In carrying our invention into effect in one convenient manner we cast or forge
the pan in one with the chain part, the said chain part being cast beneath each
pan. The chain part of each pan consists of two longitudinal pieces terminating
in bored facings or eyes. At one end of the chain part the opposing working
faces are made sufficiently narrow to fit within the opposing working faces of the
other end of the next link. Each pan thus shows in bottom plan a wide end of
the link, and a narrow end. Through each narrow end we pass a hard steel bush
or case-hardened bush. Each bush firmly connects the two opposing sides of the
narrow end of the link, leaving between the inner sides of the link ends a space
sufficiently wide to pass over the sprocket or chain wheel. Each narrow end of
the chain part is slipped within the wider ends of the next link, and is connected
to the wider end by a bolt or pin passed through the bush, and the wider and
narrower ends of the links in line with each other.
.
By this device the bush is exposed underneath, and is free to gear into the
sprocket wells or hollows of the sprocket or chain driving wheel. The bolt or
pin is fastened in any convenient manner, and in some cases a roller is substituted
for the bush.
The conveyor pans are caused to lap over at the points of junction above the
connecting bolts or pins, in order to prevent the substance conveyed from falling
through. The bush may either be firmly fastened, or it may be arranged to act
as a roller rolling upon the pin.
It is to be understood that the invention consists partly in the new arrangement
of conveyor chain link and bush or roller, and partly in the combination of the
conveyor pan and chain, but the invention may be applied without casting the
conveyor pan in one with the chain.
Our combined .conveyor chain and pan may be used for conveying coal, cold or
hot coke, or for any other purpose for which a conveyor is required.
1
In the accompanying sheet of explanatory drawings to be hereinafter referred
'to, we illustrate links and pans constructed in accordance with our invention,
Figure 1 being a transverse section, Figure 2 an inverted plan, and Figure 3 a side
elevation.
The same reference letters in the different views indicate the same parts.
Each chain link consists of side bars such as A A cast or forged on the pan B,
and having bushes or liners C inserted within their ends. The bushes are partly
circular and partly rectangular in section and the holes in the side bars are made
to correspond therewith, the rectangular parts preventing any turning of the
bushes within the bars. Side or end movement of the bushes within the bars
is prevented by the adjacent bars of the next link and by the connecting pin D,
such pin having a rectangular head at one end fitting into a corresponding recess on
the outside of the link, and a split pin at the opposite end as illustrated.. The

page_text: teeth of the chain wheel work against the revolving bush or roller E which we
mount upon the central portion of the pin D.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is :-
1. A conveyor and elevator pan and link combined in one piece for working on
or over chain or sprocket wheels substantially as described and as illustrated.
2. The combination of the bushes C, the connecting pin D, and roller E of a chain,
substantially as and for the purposes described and as illustrated.
3. The improved construction of a conveyor or elevator chaiu having removable
wearing portions arranged substantially as and for the purposes described.
Dated this 17th day of September 1896.
MARKS & CLERK,
18 Southampton Buildings, London, W.C., and
13 Temple Street, Birmingham, Agents for the Applicants.