Improvements in Means or Apparatus for Indicating Standard Time.
Year: 1889

page_text: Date of Application, 8th May, 1889
Complete Specification Left, 6th Mar., 1890-Accepted, 12th Apr., 1890
PROVISIONAL SPECIFICATION.
Improvements in Means or Apparatus for Indicating Standard Time.
I JOHN MARSHALL SPINK of the firm of Spink & Son of 2 Gracechurch Street in
the City of London, Clock and Watch Makers and Goldsmiths, do hereby declare the
nature of this invention to be as follows:-
The object of the invention is to provide simple and effectual means for indicating
at frequent or short intervals standard time exactly, so that a passer by such indicator
may at any minute in the day be able to set his own time indicator with exactitude
without having need to await say the hour when as in clocks synchronised by means
of the London General Post Office, current correction is indicated.
In carrying out my invention I employ a time keeper which I arrange to be
regulated by means of an electrically operated means of adjustment to the exact
indication of the standard clock. This secondary time keeper by means of a contact
making and breaking wheel say a wheel in ordinary train fitted with pins, blocks or
other pulsation creating parts acting on the electrical connections of a battery or
source of electrical energy supplying means for moving the armature or equivalent
part to which is connected a racking arm working a ratchet or toothed wheel so that
the pulsatory movements of the secondary clock are conveyed to this arm and thence
to the wheel actuated by it and by a train of wheel work to the dial hands so that by
a suitable hand or indicator the movements of the time indicator or standard time
are shewn by "dead beat" motions at say half minute intervals These movements if
at intervals of sixty seconds, thirty seconds or other interval apart determined upon,
will enable adjustment of other time keepers to be readily effected by passers by.
The positive movement by the electrically operated arm of the toothed wheel may
be substituted by a release motion of a weight or spring impelled train or this con-
veyance of pulsatory motion to give the half minute motions to the hands may be
effected in equivalent manner.
In addition to the successive or step by step motions of the half minute hand I also
have a vibrating indicator which indicates preferably on a separate dial or compartment
of a dial by its motion the pulsations of current operating the time indicator.
D
يم
1
1000
WM. BROOKES & SON,
55 & 56. Chancery Lane, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Means or Apparatus for Indicating Standard Time.
I JOHN MARSHALL SPINK of the firm of Spink & Son of 2 Gracechurch Street in
the City of London, Clock and Watch Makers and Goldsmiths, 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
--
The object of the invention is to provide simple and effectual means for indicating at
frequent or short intervals standard time exactly, so that a passer by such indicator may
at any minute in the day be able to set his own time indicator with exactitude without
having need to await say the hour when as in clocks synchronised by means of the
London General Post Office current correction is indicated.
In carrying out my invention I employ a time keeper which I arrange to be
regulated by means of an electrically operated means of adjustment to the exact
indication of the standard clock This secondary time keeper by means of a contact
making and breaking wheel, say a wheel in ordinary train fitted with pins, blocks or
other pulsation creating parts acting on the electrical connections of a battery or

page_text: source of electrical energy supplying means for moving the armature or equivalent
part to which is connected a racking arm working a ratchet or toothed wheel so that
the pulsatory movements of the secondary.clock are conveyed to this arm and hence
to the wheel actuated by it and by a train of wheel-work to the dial hands so that by
a suitable hand or indicator the movements of the time indicator or standard time
are shown by "dead beat" motions at say half minute intervals. These movements
if at intervals of sixty seconds, thirty seconds or other interval apart determined upon,
will enable idjustment of other time keepers to be readily effected by passers by.
The positive movement by the electrically operated arm of the toothed wheel may
be substituted by a release motion of a weight or spring impelled train, or this
conveyance of pulsatory motion to give the half minute motions to the hands may be
effected in equivalent manner.
In addition to the successive or step by step motions of the half minute hand I also
have a vibrating indicator which indicates, preferably on a separate dial or compart-
ment of a dial, by its motion the pulsations of current operating the time indicator
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a side view, Figure 2 is a rear view and Figure 3 18 a detail of a
portion of the movement of a standard clock, the vibrations of the pendulum of which
are designed to be conveyed to the secondary clock indicated by succeeding Figures
by means of pulsations of electrical current carried by means of electrical conductors.
In Figure 1 the plate A¹ has been removed.
Figure 4 is a front view, Figure 5 is a rear view, Figure 6 is a plan view
shewing the solenoid, and Figure 7 is a like view with the solenoid and its supports
removed.
In Figure 4 the dial plate and other parts are removed, to clear the drawing, and
only so much of the movement is indicated as will serve to make the application of
the invention clear.
A A¹ is the framing of the standard movement. a a are the pallets on the arbor a¹,
on which is also mounted the crutch a' and fork a' for engaging the pendulum, not
shewn 6 is the escape wheel, mounted on the same arbor as its pinion b' engaged by
the wheel 6' which again is mounted on the same arbor as its pinion 6, engaged by
the wheel mounted on the same arbor with the pinion 6', engaged by the great
wheel 6, driven by the barrel 67. On the same arbor as the pinion b¹ is mounted the
disc c, in which are cut the two notches c c. As this disc o is rotated by the release
of the escape wheel b, one or other of these notches & comes under the little blade or
projection standing out from the pendent arm d, suspended from a point at d², and
that blade-drops-into either-notch so-presented, and the pendent arm d falling into the
perpendicular, from which it had previously been kept by the surface of the disc c, a
spur of that arm comes against a pin d which is in electrical connection with the
source of electrical energy and the secondary clock by means of the leads d' d'. At
each return vibration of the pendulum with the crutch a' and fork a³, the pendent
arm dis again moved, by the pendulum striking the pin d, (mounted thereon and
formed of bone or other insulating material), taking the plate d¹ out of the notch c¹
and again breaking the contact of the part d with the part d'. These pulsations of
current are conveyed by the leads d', d to the circuit and thereby, to the
magnets ď.
The end do of the armature centred at d" is drawn towards, the
magnets, and the end d carrying the hinged arm dis, lifted and in-rising engages
one of the teeth of the wheel e rotating that wheel one. step or tooth, when it is
squared by the spring e¹. On the cessation of the pulsation of current the end, d
returns and the arm d" is again drawn down, ready for the next pulsation and the
next movement of the armature to be imparted to the wheelie. These motions to the
wheel e are by pinion e³, mounted on the same axis, conveyed to the wheel.*; by
that wheel to the wheel e; by that wheel to the pinione mounted on the same
axis, by which again the motion is transmitted to the wheel e, and, thus to the
hands.

page_text: fis a solenoid which is acted upon by the pulsations of current which draw within
it the core piece f¹, mounted on the axial pin f, which also carries the pointer f³,
which pointer traverses across the indicating plate fat each pulsation of current and
movement of the secondary clock.
The part d is made of bone or other insulating material.
The parts coming in contact at d³ d³, may be formed of platinum or other highly
conducting material, and the pin d³ is insulated from its support. The part dis
likewise insulated. The solenoid fis also mounted in insulating material.
When the invention is applied to a ship's standard chronometer, in order to adapt
it to convey indications of standard time to other movements throughout the vessel, it
will be necessary in order to give the indications every second, as in such case would
be desirable, to provide the disc or wheel c with a sufficient number of notches to give
it the corresponding number of movements in the minute.
Having now particularly described and ascertained the nature of my said Inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
In apparatus for indicating standard time the combination or arrangement of parts
for transmitting from a standard clock or other time keeper to one or more subsidiary
time indicators at convenient intervals by pulsations of electrical energy, movements
in accord with the movements of the standard clock or other time keeper substantially
as and for the purposes herein before set forth.
Dated the th
1000
་
WM. BROOKES & SON,
55 & 56, Chancery Lane, London, Agents for the Applicant.