Improvements in Pedestal Gun Mountings.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Pedestal Gun Mountings.
We, Sm W. G. ARMSTRONG, WHITWORTH & Co. LIMITED, Manufacturing
Engineers, SIR ANDREW NOBLE, K.C.B., F.R.S., and RALPH THEW BRANKSTON,
Engineer, all of Elswick Works, Newcastle-on-Tyne, do hereby declare the
nature of this invention to be as follows; -
A lower
The object of this invention is to enable the balls of the ball bearing to be
readily removed from the side of the pedestal for examination or cleaning with-
out dismounting the gun or without having to obtain access from the deck below.
A flange is provided on the shank of the carriage above the lower hearing; this
flange is provided with a hardened steel ring upon which the balls bear.
hardened steel ring is also provided resting on the pedestal. One or more holes
are cut in the pedestal opposite the ball racer and are closed with solid plugs. A
lifting screw is provided at each side of the pedestal in order to lift the weight
of the gun and carriage off the balls. On removing a plug the balls that are
opposite the hole can be drawn out and the remainder can be forced out by in-
serting a piece of rope or other flexible material, into one end of the annular
space occupied by the balls, the whole of the balls will then drop out at the other
end.
The lower ball racer is arranged so that it can be revolved for examination by
means of tommy holes provided for the purpose.
Instead of lifting the gun and carriage off the balls by means of screws we may
use a toggle jointed lever and screw.
كيم
1
1000
G. ARMSTRONG, WHITWORTH & Co., LIMITED.
XX7

page_text: nature of this invention and in what manner the same is to be performed, to bo
particularly described and ascertained in and by the following statement:-
The object of this invention is to enable the balls of the ball bearing to be
readily removed from the side of the pedestal for examination or cleaning with-
out dismounting the gun or without having to obtain access from the deck below.
Figure 1 is an elevation partly in section of a gun mounting made according
to this invention. Figure 2 is an elevation at right angles to Figure 1 and
Figure 3 is a horizontal section on the line 3-3 Figures 1 and 2. Figure 4
shows a modification.
a is the gun and is the carriage.
A flange is provided on the shank of the carriage above the lower bearing;
this flange is provided with a hardened steel ring upon which the balls & bear.
A lower hardened steel ring e is also provided resting on the pedestal f. One or
inore holes are cut in the pedestal opposite the ball racer and are closed with solid
plugs g secured in place by screws . A lifting screw is provided at each side
of the pedestal in order to lift the weight of the gun and carriage off the balls.
On removing a plug the balls that are opposite the hole can be drawn out and
the remainder can be forced out by inserting a piece of rope or other flexible
material, into one end of the annular space occupied by the balls, the whole of
the balls will then drop out at the other end.
The lower ball racer is arranged so that it can be revolved for examination by
means of tommy holes e¹ provided for the purpose.
Instead of lifting the gun and carriage off the balls by means of screws we
may use a toggle jointed lever j and screw k as shown in Figure 4.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is:-
:-
1. The combination of the pedestal, the carriage, flanges on the pedestal and
carriage, the ring of balls between the flanges, a hole in the pedestal opposite
the ball racer and a plug closing the hole.
2. Pedestal gun mountings substantially as described and illustrated in the
drawings.