Year: 1899

page_text: We, GEORGE THOMAS SMITH and WILLIAM GARDNER, Milling Engineers, both
of Bristol Road, Gloucester, in the County of Gloucester, do hereby declare the
nature of this invention to be as follows:-
The object of this invention is to provide simple means for driving two parts
of a machine in opposite directions or at different speeds from a single shaft.
For this purpose a driving shaft is arranged at right angles to the two parts
to be driven and is actuated in any suitable manner. This cross shaft carries
two bevel pinions. One of the parts to be driven occupies a central position
in relation to the second part, the latter being arranged concentrically to the
first which it surrounds and preferably forming a sleeve constituting a bearing
in which such first part revolves. The central part carries a bevel wheel or
pinion gearing with one of those on the cross driving shaft, while the second
concentric part carries another wheel or pinion gearing with the other pinion
on such cross driving shaft.
If the driving pinions are arranged both on the same side of the centre of
the parts to be driven the latter will be caused to revolve both in the same direc-
tion, whereas if one driving pinion is on one side and the other on the opposite
side of such centre such parts will be driven in opposite directions, while by
suitable proportioning the relative diameters of the whole of the wheels or
pinions the actuated parts may be respectively driven at any desired speeds. The
wheel or pinion on the outer part may if necessary or desired be shaped so as
to extend upwards and surround that on the central part in order to enable it
to gear with its driving wheel or pinion on the cross shaft.
It is preferred to make either the driving wheel or pinion in each case of iron
and the wheel or pinion it engages of brass with teeth formed of compressed
leather, or vice versa, but it will be readily understood that such wheels or
pinions may be made of any other material or materials most suited to the
requirements of the machine or parts in connection with which same are to be
employed.
Dated this 15th day of February 1899.

page_text: 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:
The object of this invention is to provide simple means for driving two parts
of a machine in opposite directions or at different speeds from a single shaft.
The accompanying drawing is a horizontal section of the gearing we employ
for this purpose.
In carrying out our invention a driving shaft 78 is arranged at right angles
to the two parts 79, 80, to be driven, and is actuated in any suitable manner.
This cross shaft 78 carries two bevel pinions 81, 82. One (79) of the parts to
be driven occupies a central position in relation to the second part 80, the latter
being arranged concentrically to the first which it surrounds and preferably
forming a sleeve constituting a bearing in which such first part revolves. The
central part 79 carries a bevel wheel or pinion 83 gearing with the bevel pinion 81
on the cross driving shaft 78, while the second concentric part 80 carries another
wheel or pinion 84 gearing with the other pinion 82 on such cross driving shaft.
If the driving pinions 81 and 82 are arranged as shown in the drawing both on
the same side of the centre of the parts 79 and 80 to be driven the latter will
be caused to revolve both in the same direction, whereas if one driving pinion
is on one side and the other on the opposite side of such centre such parts will
be driven in opposite directions, while by suitably proportioning the relative
diameters of the whole of the wheels or pinions the actuated parts may be res-
pectively driven at any desired speeds. The wheel or pinion 84 on the outer
part 80 may if necessary or desired be shaped as shown so as to extend upwards
and surround the wheel or pinion 83 on the central part 79 in order to enable
it to gear with its driving wheel or pinion 82 on the cross shaft 78.
It is preferred as shown to make either the driving wheel or pinion in each
case of iron and the wheel or pinion it engages of brass with teeth formed of
compressed leather, or vice versa, but it will be readily understood that such
wheels or pinions may be made of any other material or materials most suited
to the requirements of the machine or parts in connection with which same
are to be employed.
Having now particularly described and ascertained the nature of our said in-
vention, and in what manner the same is to be performed, we declare that what
we claim is:-
The improved toothed gear driving mechanism comprising a driving shaft
carrying two bevel wheels or pinions arranged either on the same side or on
opposite sides of the centre of two concentric parts to be driven either in oppo-
site directions or at different speeds, and each of which parts carries a bevel
wheel or pinion gearing respectively with one of the bevel wheels or pinions
carried by the driving shaft, substantially as described and as shown in the
accompanying drawings.
D2191 1. of Natambar 1800