IMPROVEMENTS IN ELEVATORS
Year: 1877

page_text: LETTERS PATENT to William Eddington and Sylvanus Eddington, both of
Chelmsford, in the County of Essex, for the Invention of "IMPROVEMENTS IN
ELEVATORS."
Sealed the 14th May 1878, and dated the 30th November 1877.
PROVISIONAL SPECIFICATION left by the said William Eddington and
Sylvanus Eddington at the Office of the Commissioners of Patents on the
30th November 1877.
WILLIAM EDDINGTON and SYLVANUS EDDINGTON, both of Chelmsford, in the
County of Essex. "IMPROVEMENTS IN ELEVATORS."
Our Invention relates to improvements in bucket and other endless chain elevators,
and consists, first, in attaching the buckets or their equivalent to a single chain
placed centrally behind them, or otherwise, instead of two chains, one at each side,
as hitherto.
The chain may have links like those of a common chain, in which case the buckets
would be fixed to two studs or projections forged on certain of the links placed at
suitable intervals in the chain.
Instead of common chain, we may employ a chain having large open links of
nearly square form and of greater width than the buckets which are attached to
the top and bottom cross bars of the links. These links would be connected
together by pairs of links of ordinary form, one at each side, and the chain would
run upon double instead of single chain wheels or drums.
When a pitch chain is employed, the buckets would be attached to the joint pins
or rivets of the links, and in this case it is preferred to employ the buckets in pairs,
one at either side of the chain, and attached to extensions of the pins which project
a sufficient distance at either side of the chain to carry the buckets.

page_text: the said William Eddington and Sylvanus Eddington in the Great Seal
Patent Office on the 30th May 1878.
WILLIAM EDDINGTON and SYLVANUS EDDINGTON, both of Chelmsford, in the
County of Essex. "IMPROVEMENTS IN ELEVATORS."
Our Invention relates to improvements in bucket and other endless chain elevators,
and consists in attaching the buckets or their equivalent to a single chain placed
centrally behind or between them, as herein-after described, instead of two chains,
one at each side, as hitherto.
When the chain is placed between the buckets, the latter would be in pairs, one
at either side of the chain
The chain may have links like those of a common chain, in which case the buckets
would be fixed to two studs or projections forged or cast on certain of the links
placed at suitable intervals in the chain
In order that our Invention may be more readily understood, we have illustrated
it in the accompanying Drawings, and will proceed to describe it more in detail
with reference thereto
Figure 1 is a front elevation, and Figure 2 a side elevation of part of an endless
chain bucket elevator with a single chain having links of the common form
A is the chain placed centrally behind the buckets B which are connected each
to a single link by two studs or brackets a forged or cast on each link intended to
carry a bucket. These studs a terminate each in a T head, to which the bucket is
bolted or rivetted, as shown in Figures 3 and 4, or instead of the T head, the ends
of the studs may have a screw thread cut on them and pass through holes in the
back of the bucket and be secured by a nut inside. The studs stand out far
enough to carry the buckets B clear of the chain wheel or drum C which is of the
ordinary form.
Figures 3 and 4 represent a similar chain, except that only those links to which
buckets are attached are welded, the others being left unclosed.
Figures 5 and 6 represent side and front elevations of a similar elevator, also with
a single central chain. In this case the alternate links A. are of rectangular form,
made of round iron or steel, welded or not, whilst the remaining links A' are made
of flat bar iron or steel and are merely bent over without being closed or welded
Such of the links A' as are intended to carry the buckets B have their ends
extended and bent round of the form shown at a¹, for rivetting or bolting the buckets
thereto, as shown In this case, C is a sprocket wheel with double teeth, between
which the links A¹ lie.
Figures 7 and 8 represent side and front elevations of another arrangement in
which the buckets are in pairs with the chain between them. The chain is con-
structed as in Figures 5 and 6, the links to which the buckets are attached having
two pairs of T headed studs a forged or cast on them and projecting on opposite
sides of the links, as shown, sufficiently to carry the buckets clear of the wheel C.
By using chain with links of the form shown, and not pitch chains with rivetted
links of the ordinary pattern, the cost of the elevator is very much reduced
Having described the nature of the Invention and the manner of performing the
same, we declare that what we claim as our Invention to be protected by the herein-
before in part recited Letters Patent is,-
First. The construction of elevators with a single endless chain having links of
the ordinary forms shown placed centrally behind the buckets which are attached
thereto by studs or projections formed on the links, substantially as herein described
and shown in Figures 1, 2, 3, 4, 5, and 6 of the Drawings.
Second. The construction of elevators with the buckets placed in pairs on either

page_text: side of a single chain, substantially as herein described and shown in Figures 7 and 8
of the Drawings.
In witness whereof, I, the said William Eddington, have hereunto set my hand
and seal, this Twenty-eighth day of May, in the year of our Lord One
thousand eight hundred and seventy-eight.
WILLIAM EDDINGTON (L.S.)