Improved Roller Bearing Gear Chain.
Year: 1898

page_text: Date of Application, 30th Dec., 1898-Accepted, 4th Mar., 1899
Improved Roller Bearing Gear Chain.
I, ROBERT KAISER, Manufacturer, of 48, Kampstrasse, Barmen, in the Empire
of Germany do hereby declare the nature of this invention and in what manner
the same 18 to be performed to be particularly described and ascertained in and
by the following statement,-
A well known disadvantage in connection with gear chains is that owing to the
friction and tension to which the pins or bolts are liable, they soon wear away.
This invention has for its object to provide a gear chain in which the friction
is greatly reduced; and consists in seating the pins or bolts in roller bearings,
which are formed by two bearing boxes rigidly connected together and cylindrical
rollers lying therein, the tensional action on the boxes which simultaneously effect
the connection of the separate pairs of plates being so transmitted that the interior
surfaces of the boxes are only exposed to roller friction.
In the accompanying drawing, the invention is illustrated in the simplest form
by way of example. Fig. 1 is a side view of two links of a chain, with roller
bearings constructed according to this invention
Fig 2 is a plan thereof
Fig. 18 a longitudinal section along the line A B in Fig. 2.
Fig 4 represents a double bearing box,
Fig. 5 a pin or bolt, and
Fig 6 a part elevation of a wheel employed in connection with this form of
chain
Between the plates a a' a double bearing box b b 18 arranged, which either
consists of two boxes rigidly connected together, or is made in one piece and
seives to receive the bearing rollers c c c etc, the number and diameter of which
may be as preferred and for the seating of the pin d between the rollers At the
same time the double bearing box serves as a connecting piece between the separate
paus of plates. The pin d is immovably connected with the plates a a¹ and either
riveted or pinned at the enda
The plates are widened at their ends correspondingly to the diameter of the
bearing boxes in order to prevent the bearing rollers from falling out
By the use of the double beaning box and the arrangement of the roller bearing
the effect is secured that the tensional action of the chain is transmitted to the
bearing boxes and that the friction of the inserted pins or bolts inside the boxes
18 considerably diminished, as such pins or bolts, as well as the interior walls of
the boxes, are only subjected to roller friction.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed I declare that what I
claim 19:
1 A gear chain, the distinguishing feature of which is that the tensional action
of the chain 18 transmitted to double bearing boxes arranged beween the plates
and that in
Consequence of the same haine in the form of molles harving tin the

page_text: inserted pins or bolts, these pins as well as the interior walls of the bearing boxes,
are only subjected to roller hiction.
2. The improved roller bearing gear chain substantially as described with refer-
ence to the drawings.
Dated this 29th day of December 1898.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, WC., Agents.