IMPROVEMENTS IN WHEEL GEAR FOR WORKING SIGHT BARS FOR GUNS AND FOR ELEVATING GEAR' FOR GUN CARRIAGES AND FOR TRAINING AND OTHER. WINCH GEAR FOR GUN. CT TO AND DE ATRODY"
Year: 1883

page_text: LETTERS PATENT to Charles Henry Murray of the City and County of,
Newcastle-upon-Tyne Engineer. for an Invention of "IMPROVEMENTS IN
WHEEL GEAR FOR WORKING SIGHT BARS FOR GUNS AND FOR ELEVATING GEAR'
FOR GUN CARRIAGES AND FOR TRAINING AND OTHER. WINCH GEAR FOR GUN.
CT TO AND DE ATRODY"
PROVISIONAL SPECIFICATION left by the said Charles Henry. Murray at
the Office of the Commissioners of Patents on the 17th May: 1883..
CHARLES HENRY MURRAY of the City and County of Newcastle-upon Tyne
Engineer. "IMPROVEMENTS IN WHEEL GEAR FOR WORKING SIGHT BARS FOR GUNS
AND FOR ELEVATING GEAR FOR GUN CARRIAGES AND FOR TRAINING AND OTHER
WINCH GEAR FOR GUN SLIDES AND PLATFORMS.' "
This invention has for its object improvements in wheel gear for working sight
bars for guns and for elevating gear for gun carriages and for training and other
winch gear for gun slides and platforms.
For working the sight bars of guns the sight bar is arranged to be raised and
lowered by a pinion gearing into rack teeth formed in the bar.
Fast on the axis of the pinion is a toothed wheel. By the side of this wheel
and concentric with it is a wheel fixed to the socket through which the sight bar
works and having more or less teeth than the other wheel.
A broad planet wheel is made to gear into the concentric wheels. The planet
wheel is carried by and within a casing which encloses the two concentric wheels
and which by a crank handle projecting from it or otherwise can be revolved
around their axis. The axis of the pinion which gears with the rack on the sight
bar can in this way be slowly 'revolved and made to lift or lower the sight bar.
The advantage derived from this arrangement is that a fine movement of the
sight bar can be obtained-also that it is unnecessary to clamp the sight bar in
the socket or secure it in any other way from descending as the gear will not
move backwards.
For elevating gear the usual pinion which gears into the elevating arc on the
gun has a toothed wheel fast upon its axis and side by side with this toothed
•

page_text: wheel and concentric with it is a second toothed wheel having more or less teeth
and made in one with the bush through which the axis of the above mentioned
pinion works and fixed to the carriage cheek. A broad planet wheel gears with
the two concentric wheels and is carried by and within a casing which also encloses
the two concentric wheels. The casing can by a crank handle upon it or other-
wise be revolved around the axis of the toothed wheels and so a slow revolving
motion can be given to the pinion which gears with the elevating arc of the gun.
In place of the planet wheel being one broad wheel it might be in two divisions
one gearing with one wheel and the other with. the other-in this case the two
divisions might be of different diameter and the division which gears with one
wheel be made with more or less teeth than the division which gears with the
other wheel so as to still further vary the range of possible changes in the amount
of multiplying power obtainable by the system of gear.
For training gear a similar arrangement of wheel gear is employed for revolving
the spindle required to be driven. One wheel the non-revolving one being fixed to
any portion of the gun slide or platform as found 'convenient and the other fixed on
to the spindle. The planet wheel in this case I make in two divisions and one
division I make capable of sliding endwise along its axis so that it can either be
moved up to and made to engage with the other division or can be moved away
from this division and made to engage with and lock itself to the casing. If the
casing be then revolved the spindle will make one' turn for each revolution of the
casing whilst if on the contrary, the two divisions of the planet wheel are locked
together the desired amount of multiplying power is obtained.
To move the one division of the planet wheel away from the other I use a screw
nut outside the casing the nut screws onto a screw thread on the exterior of the
axis of the moveable division of the planet wheel. This axis is hollow and the axis
of the other division of the wheel passes through it. A collar on the end of this
inner axis keeps the nut from moving endwise in one direction and the side of the
casing keeps it from moving in the opposite direction.
The advantages claimed for this system are that when the gun slide is mounted
on a level ships deck and the work required to be done is small, the system can be.
made direct acting, and that when on the other hand the ship is rolling and much
work has to be done in training additional multiplying power can be obtained at a
moments notice, the gear having the advantage in the latter case that it will not
run backwards.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Charles Henry Murray in the Great Seal Patent Office on the
17th November 1883.
CHARLES HENRY MURRAY of the City and County of Newcastle upon Tyne
Engineer "IMPROVEMENTS IN WHEEL GEAR FOR WORKING SIGHT BARS FOR GUNS
AND FOR ELEVATING GEAR FOR GUN CARRIAGES AND FOR TRAINING AND OTHER
WINCH GEAR FOR GUN SLIDES AND PLATFORMS
"
This Invention bas for its object improvements in wheel gear for working sight
bars for guns and for elevating gear for gun carriages and for training and other
winch gear for gun slides and platforms.
· Figure 1 is a side, elevation partly in section and Figure 2 is a front elevation
with parts removed showing my improved method of arranging and actuating the
sight bars of guns.
For working the sight bars of guns the sight bar a is arranged to be raised and.
lowered by a pinion 6 gearing into rack teeth formed in the bar.
Fast on the axis of the pinion b is a toothed wheel c. By the side of this wheel
and concentric with it is a wheel & fixed to the socket through which the sight bar
works and having more or less teeth, than the other wheel.
A broad planet wheel eis made to gear into the two concentric wheels. The
planet wheel is carried by and within a casing f which encloses the two concentric
wheels and which by a crank handle projecting from it or otherwise can be
revolved around their axis. The axis of the pinion which gears with the rack on
the sight bar can in this way be slowly revolved and made to lift or lower the
sight bar.
The advantage derived from this arrangement is that a fine movement of the
sight bar can be obtained-also that it is unnecessary to clamp the sight bar in the
socket or secure it in any other way from descending as the gear will not move
backwards.
Figure 3 is a front elevation partly in section and Figure 4 is a longitudinal
section showing my improved method of arranging elevating gear.
For elevating gear the usual pinion g which gears into the elevating are on the
gun has a toothed wheel h fast upon its axis and side by side with this toothed
wheel and concentric with it is a second toothed wheel i having more or less teeth
and made in one with the bush through which the axis of the above mentioned
pinion works and fixed to the carriage cheek. A broad planet wheel / gears with
the two concentric wheels and is carried by and within a casing which also
encloses the two concentric wheels. The casing can by a crank handle upon it or
otherwise be revolved around the axis of the toothed wheels and so a slow
revolving motion can be given to the pinion which gears with the elevating, are of
the gun
In place of the planet wheel being one broad wheel it might be in two divisions
one gearing with one wheel and the other with the other in this case the two
divisions might be of different diameter and the division which gears with one
wheel be made with more or less teeth than the division which gears with the
other wheel so as to still further vary the range of possible changes in the amount
of multiplying power obtainable by the system of gear..
For training gear a similar arrangement of wheel gear is employed for revolving
the spindle required to be driven.
'
Figure 5 is a front elevation partly in section and Figure 6 is a side elevation
partly in section showing my improved method of arranging training gear,
T

page_text: One wheel the non-revolving one m is fixed to any portion of the gun slide or
platform as found convenient and the other wheel n is fixed on to the spindle.
The planet wheel in this case I make in two divisions o¹ and o2 and one division o'
I make capable of sliding endwise along its axis so that it can either be moved up
to and made to engage by clutching projections with the other division o² or can
be moved away from this division and made by like projections to engage with
and lock itself to the casing p. If the casing be then revolved the spindle will
make one turn for each revolution of the casing whilst if on the contrary the two
divisions of the planet wheel are locked together the desired amount of multiplying
power is obtained.
To move the one, division of the planet, wheel away from the other I use a screw
nut.q outside the casing, the nut screws onto a screw thread on the exterior of the
axis of the moveable division o¹ of the planet wheel. This axis is hollow and the.
axis of the other division o2 of the wheel passes through it. A collar o+ on the
end of this .inner axis keeps the nut from moving endwise in one direction and the
side of the casing keeps it from moving in the opposite direction..
The advantages claimed for this system are that when the gun slide is mounted
on a level ships deck and the work required to be done is small, the system can be
made direct acting, and that when on the other hand the ship is rolling and much
work has to be done in training additional multiplying power can be obtained at a-
moments notice, the gear. having the advantage in the latter case that it will-not
run backwards.
Having thus described the nature of my said Invention and the manner of
performing the same I would have it understood that I claim :-.
First. The gear for actuating the sight bars of guns consisting of a rack on the
sight bar and a pinion engaging therewith, a wheel fast on the axis of the pinion
another fixed wheel with a different number. of teeth and a planet wheel engaging
with both the other wheels and capable of being moved. around their axis substan-.
tially as described.
•
Second. The gear for actuating the sight bars of guns substantially as described
and represented in the annexed Drawings.
Third. The elevating, gear, consisting of a toothed wheel on the axis of the
pinion engaging with the elevating arc, a second fixed toothed wheel, having more
or less teeth and a planet wheel or wheels engaging with both and contained in a
casing which can be revolved about the axis of the pinion and wheels substantially
as described..
Fourth. The elevating gear substantially as described and represented in the
annexed Drawings..
Fifth. The training gear consisting of a toothed wheel on the axis of the training
pinion, a second fixed wheel having more or less teeth and a planet wheel engaging
with both; such planet wheel being contained in a casing which can be revolved
about the axis of the pinion and wheels substantially as described..
Sixth. In the, said training gear, the planet wheel in two divisions of which.
one can be moved end wise by a screw. and nut and so made. to engage either with
the other division or with the revolving casing substantially as described.
こ 4
In witness whereof I the said Charles Henry Murray have hereunto set my
hand and seal this tenth day of November in the year of our Lord One thousand
eight hundred and eighty three.