An Improved Drum for Working Dredger Buckets, Elevator Chains, and the like.
Year: 1895

page_text: Date of Application, 19th Oct., 1895-Accepted, 23rd Nov., 1895
An Improved Drum for Working Dredger Buckets, Elevator Chains,
and the like.
I, JOHN ARTHUR SANER, of Highfield, Northwich, in the County of Chester,
ABSOO. Mem. Inst. C.E., 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 reference to drums or tumblers for working dredger buckets,
elevators, hoists, and other like apparatus; and has more particularly for its object
to render the cost of construction less than that of those ordinarily employed, and
to facilitate the repair and maintenance of them.
My invention will be described with reference to the drawings hereto
annexed, which shew an elevator drum of a bucket dredger provided with my
improvements.
Figure 1 shews the drum in front olevation, and partly in section; and, Figure 2
shows it in end view, partly sectional.
Referring to these drawings, a is the body of an elevator drum, this part being
preferably of cast iron and of hollow construction as shewn. b is the shaft on
which the body a is secured. o are rings, preferably of hard metal, as steel, at
either end of the drum, on which the bucket chains, links, or the like, bear and
work. The outside of these rings, iu tho example shewn, is pentangular, the sides
of which are even with the rest of the drum; but inside they are of circular form,
and they fit over corresponding circular neck portions a' of the drum a. These
necks a, and the inner surfaces of the rings o are truly turned, and adapted to fit
on one another; and the rings are fastened upon the necks a' by keys d.
The body a, as shewn in the drawings, is made in halves, and these halves are
provided at each end with recesses or counter-sinks e, through which fastening
bolts will pass.
To assist the fastening of the rings e upon the necks a¹, they may be shrunk on
in addition to being keyed as described.
By this construction of drum or tumbler, only such portions of it which take the
wear need renewing when worn; that is, the body does not require renewal, but
only the end rings or bands; and if these be of best quality of steal or other
durable and wear resisting metal, a long life of these parts is provided or afforded;
whilst the whole tumbler being largely composed of the cheaper metal, as cast
iron, the result is that the cheaper construction of tumbler or drum is provided.
But even in the case of the rings or bands being of cast iron, the renewal of these
parts only, when worn, afforda economy in the upkeep of the machinery.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
The improved bucket dredger elevator drum, or like 'drum, herein described,
consisting of the body a, and the steel or like metal rings o at either end;
substantially as set forth, and as shewn in the drawings hereto annexed.
Dated this 17th day of October 1895.
CHEESBROUGH & ROYSTON,
16 Water Street, Liverpool, Applicant's Patent Agents.