Improvements in Time Fuses.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Time Fuses.
We, Sir W. G. ARMSTRONG, WHITWORTH AND COMPANY, LIMITED, Manu-
facturing Engineers, SIR ANDREW NOBLE, K.C.B., F.R S., and GEORGE STUART,
Engineer, all of Elswick Works, Newcastle-upon-Tyne, do hereby declare the
nature of this invention to be as follows:-
This invention has for its object a readier and more certain means of revolving
the graduated ring so as to adjust the division required with precision and
despatch.
To obtain this result we groove the stem of the body so as to form a pinion
and we fix on the ring a wheel of such a diameter that it will gear into the teeth
of the pinion and internal teeth cut in the dome. The result of this gear is
that, to rotate the composition ring; we have to rotate the dome, which owing
to the differential gear above described gives more power and delicacy in setting.
We are also able to tighten the nut to a greater extent, thereby avoiding the
necessity of slackening and tightening the nut. We replace the usual hexagon
nut screw cap with a milled edge, the dome is also milled to give grip to the
hand when setting.
The advantages gained by this arrangement are:-
Increased delicacy in setting; increased power in rotating the ring and that
no key is required for tightening the nut.
Dotad thin Oth dave
1000
Improvements in Time Fuses.
We, Sir W. G. ARMSTRONG, WHITWORTH AND COMPANY, LIMITED, Manu-
facturing Engineers, SIR ANDREW NOBLE, K.C.B., F.R.S., and GEORGE STUART,
Engineer, all of Elswick Works, Newcastle-upon-Tyne, 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 the following statement:-
-
This invention has for its object a readier and more certain means of revolving

page_text: the graduated ring so as to adjust the division required with precision and
despatch.
To obtain this result we groove the stem of the body so as to form a pinion
and we fix on the ring a wheel of such a diameter that it will gear into the teeth
of the pinion and internal teeth cut in the dome. The result of this gear is
that, to rotate the composition ring, we have to rotate the dome, which owing
to the differential gear above described gives more power and delicacy in setting.
We are also able to tighten the nut to a greater extent thereby avoiding the
necessity of slackening and tightening the nut. We replace the usual hexagon
nut by a screw cap with a milled edge, the dome is also milled to give grip to the
hand when setting.
The advantages gained by this arrangement are:-
Increased delicacy in setting: increased power in rotating the ring and that
no key is required for tightening the nut.
Figure 1 is a side view of the fuse and Figures 2 and 3 are sections on the
lines 22 and 3-3 Figure 1.
A is the stem, B the dome, C the wheel and D the milled nut.
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 wheel and the teeth on the stem and dome sub-
stantially as described and illustrated in the drawings.
2. The combination of the dome and the milled nut substantially as described.
and illustrated in the drawings.
3. Time fuses substantially as described and illustrated in the drawings.
Dated this 18th day of Tulu 1900