Improved Gear Chain.
Year: 1899

page_text: Date of Application, 30th Dec., 1899-Accepted, 31st Mar., 1900
Improved Gear Chain.
1, ROBERT KAISER, Engineer;; of 46, Kampstrasse, Barmen, in the Empire of
Germany, 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
he following statement:-
A serious disadvantage in flat link chains is that the bolts or pins are "very
quickly worn away, owing to the edges of the different plates cutting into the
pins, or to the pins being worn away through the direct friction of the bushes
seated on them.
The object of this invention is to obviate such disadvantages by arranging
roller bearings between the pins and the movable parts of the chain.
Two forms of the invention, given as examples, are illustrated in the accom-
panying drawing, in which:-
:-
Fig. 1 represents one of these forms in horizontal section, the chain links
being seated on roller bearings immediately surrounding the bolts.
Fig. 2 is a similar view of the same form of the invention with casings for
protecting the bolts against the action of the chain wheel teeth.
Figs. 3 and 4 are side views of the forms illustrated in Figs. 1 and 2.
Fig. 5 is a horizontal section of another form of the invention with steel
coupling sleeves for connecting the chain links.
Fig. illustrates the same form of the invention with casings for protecting
the steel coupling sleeves against the action of the chain wheel teeth.
Figs. 7 and 8 are side views of the same.
The construction according to Figs. 1 and 3 is as follows:-
Plates in any number as preferred, are firmly connected with the pins a,
the ends of the plates being cut away as shown.
Link plates are pushed on to the bolts,
i, and for
between the plates
securing the bolts against direct friction, rollers are arranged between the
bolts and the plates e.
The construction according to Figs. 5 to 7 is as follows:-
Plates f f in any preferred number are firmly connected with the cylindrical
inse the ends of which are squared.
Steel casings g are pushed on to the bolts e. These serve as bearers for the
chain-links, which are pushed tightly on to the steel casings and may be in
any number as preferred. Between the steel casings g and the bolts e rollers i are
arranged in order to reduce the friction. These rollers are of the same length
as the steel casings.
In the form illustrated in Figs. 2, 4, 6 and 8 a sleeve k is arranged for protecting
the bolts a and the steel casings and rollers are provided between the
sleeve and the bolts and steel casings g.
By means of the construction herein described, the disadvantages of the
well-known Gall's chains which are due to the serious wear and tear, are entirely
removed, as roller bearings are arranged between all the parts where there is
Luiation

page_text: Having now particularly described and-ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:
1. Flat link gear chain the distinguishing feature of which is that the movable
chain links are seated on the bolts by means of roller bearings.
2. Flat link gear chain the distinguishing feature of which is that the movable
chain links are pushed on to bushes, which are seated on the bolts by means
of roller bearings.
3. Flat link gear chain according to Claims 1 and 2, the distinguishing feature
of which is the arrangement of protecting sleeves or casings, mounted on the
bolts or on the bushes, by means of roller bearings.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C.,
Agents.