Improvements in Electrical Apparatus for Recording the Time of Working of Machines and for like purposes.
Year: 1899

page_text: Date of Application, 15th Feb., 1899
Complete Specification Left, 10th Nov., 1899-Accepted, 3rd Feb., 1900
Improvements in Electrical Apparatus for Recording the Time of
Working of Machines and for like purposes.
I, JOHN HENRY BARKER, of 26, Park Parade, Cambridge, Electrical Engineer,
do hereby declare the nature of this invention to be as follows:
My invention relates to recording apparatus, for use more especially in electrical
stations. It has for its object the recording of the output of the station, the
load on the various machines, and the other log sheet information in such a
manner that after the information has been put down it cannot subsequently
be tampered with by the attendants; and to enable the neglect of the attendant
to put in the information at the proper time to be detected.
My invention consists in mounting the log sheet on a clock drum, or a drum
driven from the station or other standard clock, and in mounting such drum in a
case with a glass front such glass front being provided with an opening along a
narrow space on the drum, so that the various log sheet information may be
recorded on it.
It further consists in providing a set of electro-magnets operating pens so as
to produce records on one part of the log sheet. Each of these electro-magnets
is placed in shunt on the circuit of one of the station generating machines, or in
any other such manner that it is energised only when its own particular machine
is running.
In carrying my invention into effect according to one modification, I provide
a drum driven by a clock, and adapted to carry mounted on it the log sheet.
This drum I place in a suitable case provided with a front preferably of glass.
Along the length of the drum I provide a narrow opening in the glass front.
This narrow opening only extends along part of the length of the drum. The
other part of the drum is also covered with a glass front, but it has no opening
in it.
Opposite this part a set of pens are mounted, each adapted to be operated by
an electro-magnet. Each of the electro-magnets is in circuit with and energiseil
by one of the station generators, so that when this generator is started, and
supplying current to the mains, the armature of the electro-magnet is attracted,
and thereby its pen is pressed on the log sheet on the drum. A record is thereby
made of the time during which that particular generator has been running and
also of the time at which the generator was started, and when it stopped. The
electro-magnets which operate the pens may be of any suitable character, depending
on the kind of circuits for which they are intended, that is, for alternating or
continuous current. The log sheet is provided with spaces, each about the
width of the slit in the front case, and each of these spaces represents a half
hour interval. The clock shifts the log sheet from one space to another during
each half hour, and the station attendant marks in each space in the respective
columns the information desired to be recorded about the station circuits, such,
for instance, as the output in ampéres on each particular circuit of the station

page_text: switch-board, and the numbers of the particular generators which are supplying
these circuits individually and adds his own initials.
My improved apparatus may be used in transformer or other sub stations, and
may be used to record there the information required with reference to the
individual transformers or other current supplying apparatus in such sub-stations,
and the circuits of the electro-magnets may be connected to the several trans-
formers so that they will record the time at which each transformer was put in
circuit, and the length of time it remained in circuit.
Various other modifications may be made without departing from my invention.
It will be seen that my invention prevents the attendants interfering with
the records, after the half hour or other suitable interval has been completed.
It will be obvious that the drum might be made to operate intermittently
and to move through the whole space corresponding to the half hour interval,
on the completion of such interval, and remain locked, without moving, during
the next half hour interval, then being moved automatically again on the
completion of that interval, so that the drum would be always locked except
when being shifted from one space to the next.
The case of the instrument is of course kept locked, so that the attendants
cannot tamper with it.
MARKS & CLERK,
18, Southampton Buildings, London, W.C.,
13, Temple Street Birmingham, and
25, Cross Street, Manchester, Agents.
t
Improvements in Electrical Apparatus for Recording the Time of
Working of Machines and for like purposes.
I, JOHN HENRY BARKER, of 26, Park Parade, Cambridge, Engineer, 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:
My invention relates to recording apparatus for use more especially in electrical
stations. It has for its object the recording of the output of the station, the
load on the various machines, and the other log sheet information in such a
manner that after the information has been put down, it cannot subsequently
be tampered with by the attendants; and to enable the neglect of the attendant
to put in the information at the proper time to be detected.
My invention consists in mounting the log sheet on a clock drum, or a drum
driven from the station or other standard clock and in mounting such drum in a
case with a glass front, such glass front being provided with an opening along a
narrow space on the drum, so that the various log sheet information may be
recorded on it.
It further consists in providing a set of electro-magnets operating pens so as
to produce records on one part of the log sheet. Each of these electro-magnets
is placed in shunt on the circuit of one of the station generating machines, or in
any other such manner that it is energised only when its own particular machine
is running.
Referring now to the accompanying drawings which illustrate my invention:
Figure 1 is a front elevation of one modification of my invention.
Figure 2 is an end elevation with the side of the case removed.

page_text: Figure 3 is a partial section on the line A B of Figure 1.
The
The drum a is mounted on a shaft b supported on the brackets and c¹. The
drum contains clockwork which is wound up in the usual manner by inserting
a key in the hole d and making it actuate the square ended spindle e.
paper log sheet g is rather longer than the periphery of the drum and is attached
to the latter in the ordinary manner by means of the spring clip f. The front
of the case consists of two sheets of glass and of which the latter has a slit
extending its whole breadth, and just in front of the middle of the drum which
at this place almost touches the glass. Under the sheet of glass h are mounted
a number of pens m actuated by electro-magnets n.
Each of these electro-magnets
is in circuit with, and energised by, one of the station generators so that, when
this generator is started and supplying current to the mains the armature of
the electro-magnet is attracted and thereby its pen is pressed on the log sheet
on the drum. The terminal screws for the attachment of the wires from the
generators are shown at o. A record is thus made of the time during which
any particular generator has been running and also of the times at which the
generator was started and stopped. The electro-magnets may be of any suitable
character, depending on the kind of circuits for which they are intended, that
is, for alternating or continuous current. The log sheet is ruled longitudinally
into columns and is also divided transversely into spaces each space being about
the width of the slit in the front case and each representing half an hour or
other suitable interval of time. During this interval of time the clock-work
shifts the log sheet from one space to another and the station attendant marks
in each space in the respective columns the information desired to be recorded
about the station circuits, such for instance as the output in amperes on each
particular circuit of the station switch-board and the numbers of the particular
generators which are supplying these circuits; he also adds his own initials.
My improved apparatus may be used in transformer or other sub stations, and
may be used to record there the information required with reference to the
individual transformers or other current supplying apparatus in such sub-stations,
and the circuits of the electro-magnets may be connected to the several trans-
formers so that they will record the time at which each was put in circuit and
the length of the time it remained in circuit.
Various other modifications may be made without departing from my invention.
It will be seen that my invention prevents the attendants interfering with
the records after the half hour or other suitable interval has been completed..
Moreover it will be obvious that the drum might be made to operate intermit-
tently, and to move through the whole space corresponding to the half hour interval
on the completion of such interval and remain locked, without moving, during
the next half hour interval, then being moved automatically again on the
completion of that period so that the drum would be always locked except when
being shifted from one space to the next. It will also be obvious that the log
sheet might be unwound from one drum and wound on to another so as to have
a continuous record of working for several days. Or, without departing from my
invention, two drums might be used-one to move a log sheet for receiving the
automatic record from the pens m and the other to move a log sheet to receive
the hand-written record through the slit 7.
The case of the instrument is of course kept locked, so that the attendants
cannot tamper with it.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is
1. An electrical recording apparatus substantially as described with reference
to the accompanying drawings.
2. Recording the times and periods of working of electric generators or other
current supplying apparatus by means of pens marking on a travelling log sheet

page_text: and electrically controlled by the said apparatus, substantially as described with
reference to the accompanying drawings.
3. In an electrical recording apparatus the employment of a number of pens
actuated by electro-magnets which are energised by current from electric
generators or other current supplying apparatus which pens record on a travelling
log sheet the times and periods of working of the said current supplying apparatus
substantially as and for the purpose described with reference to the accompanying
drawings.
embe
33.
MARKS & CLERK,
18, Southampton Buildings, London, W.C.,
13, Temple Street Birmingham, and
25, Cross Street, Manchester, Agents.
Dateu
in day 01 Oember 1033.
MARKS & CLERK,
18, Southampton Buildings, London, W.C.,
13, Temple Street Birmingham, and
25, Cross Street, Manchester, Agents.