IMPROVED ADDADAMING FOR INDICATING TIME IN DIFFERENT LOCALITIES OR POSITIONS. APPARATUS FOR INDICATING Time in Different LocalITIES OR POSITIONS.
Year: 1875

page_text: LETTERS PATENT to Carl Leonard Herman Lammers, of Gosforth, in
the County of Northumberland, for the Invention of "IMPROVED
ADDADAMING FOR INDICATING TIME IN DIFFERENT LOCALITIES OR POSITIONS.
APPARATUS FOR INDICATING Time in Different LocalITIES OR POSITIONS.“
PROVISIONAL SPECIFICATION left by the said Carl Leonard Herman
Lammers at the Office of the Commissioners of Patents, with his
Petition, on the 14th August 1875.
I, CARL LEONARD HERMAN LAMMERS, of Gosforth, in the County of
Northumberland, do hereby declare the nature of the said Invention
for "IMPROVED APPARATUS FOR INDICATING TIME IN DIFFERENT LOCALITIES OR
POSITIONS," to be as follows:-
-
My Invention relates to means of indicating correct Greenwich mean,
siderial, or other time on any number of dials situated in different
positions or localities, the hands on all the dials being operated from one
main or central clock. To this end on, say, the minute hand arbor of
the main or central clock I key a band pulley, which pulley carries an

page_text: endless cord, band, or its equivalent, which also passes round another
pulley of equal diameter to the first one. This pulley may be on the
minute hand axis of one of the above-mentioned dials (which I term
time indicators), or it may be merely an intermediate pulley by which any
desired number of endless cords or bands are operated, the said endless
bands leading in any direction required, and each passing over a similar
pulley on the axis of the hand of each of the time indicators above
referred to.
Other intermediate pulleys and bands or spur gearing may be provided
when required to transmit the motion in certain directions.
I prefer to employ round cord for the endless bands working in V
shaped grooves in the pulleys, the bands being further provided with
teeth or projections at equal distances apart, which take into corre-
sponding indentations or notches in the peripheries of the pulleys, but
the form of the bands and pulleys may be varied according to circum-
stances. The endless bands will further be enclosed in tubular casings
of any convenient form to preserve them from external influences.
The hands of the time indicators above referred to are geared together
by a train of wheels and pinions to transmit the proper relative speed to
the two hands, the going mechanism and maintaining power being dis-
pensed with.
h
m
To show siderial time the indicator on which it is desired to show
siderial time is made so much smaller as to indicate 24 3 56.5555 of
time in 24 hours of mean time.
I also propose to apply the same system of endless bands to the
striking part of the main clock to transmit motion to hammers striking
bells on the time indicators.
SPECIFICATION in pursuance of the conditions of the Letters Patent
filed by the said Carl Leonard Herman Lammers in the Great Seal
Patent Office on the 14th February 1876.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fourteenth day of August, in the year of
our Lord One thousand eight hundred and seventy-five, in the thirty-
ninth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Carl Leonard Herman Lammers, Her
special licence, that I, the said Carl Leonard Herman Lammers, my
executors, administrators, and assigns, or such others as I, the said
Carl Leonard Herman Lammers, my executors, administrators, and
assigns, should at any time agree with, and no others, from time to
time, and at all times thereafter during the term therein expressed,
should and lawfully might make, use, exercise, and vend, within the
United Kingdom of Great Britain and Ireland, the Channel Islands, and
Isle of Man, an Invention for "IMPROVED APPARATUS FOR INDICATING TIME IN
DIFFERENT LOCALITIES OR POSITIONS," upon the condition (amongst others)
that I, the said Carl Leonard Herman Lammers, my executors or admini-
strators, by an instrument in writing under my, or their, or one of
their hands and seals, should particularly describe and ascertain the
nature of the said Invention, and in what manner the same was to
be performed, and cause the same to be filed in the Great Seal Patent
Office within six calendar months next and immediately after the date
of the said Letters Patent.
NOW KNOW YE, that I, the said Carl Leonard Herman Lammers, do
hereby declare the nature of the said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained
in and by the following statement, reference being had to the accom-
panying Sheet of Drawings, and to the letters and figures marked thercon,
that is to say :-
My Invention relates to means of indicating correct Greenwich mean,
siderial, or other time on any number of dials, hereafter distinguished
by the name of time indicators, situated in different positions or localities
(as, for instance, in different parts of a building or in different streets of
a town), the hands of all the time indicators being operated from one
main or central clock. The hands of the time indicators will therefore
move synchronously with those of the main clock, whereby greater
5 uniformity is obtained than if so many separate clocks were used; and
I am enabled to dispense with the weight or mainspring, the train
of wheels, the escapement, and the balance or pendulum in all the time
indicators, which merely consist each of a dial with hour and minute

page_text: ""
hands geared together by the ordinary
"dial work or motion wheels,
and actuated from the main clock in the following manner:-On, say,
the centre wheel arbor of the main clock I key a band pulley, upon
which runs an endless cord, band, or its equivalent, which also passes
round another pulley of equal diameter to the first one. This second
pulley may be on the minute hand axis of one of the time indicators, or
it may be merely an intermediate pulley on an axis on which are keyed
any required number of other pulleys, from which any desired number
of time indicators may be actuated by endless cords or bands leading
in any direction required, and each passing over a similar pulley on the
minute hand axis of a time indicator.
Other intermediate pulleys, bands, and gearing may be provided when
required to transmit the motion in certain directions according to the
position of the time indicators relatively to the main clock.
I may employ round cord for the endless bands working in V shaped 1
grooves in the pulleys, which would have two or three indentations or
notches in their peripheries, there being at equal distances along the
cords or bands corresponding projections or rings which engage in the
indentations or notches; or the bands may be flat with holes in them to
take on to pins around the circumference of the pulleys, which in this 2
case would have a flat groove. Or the flat band may have projections
on the inner surface which take into notches, as in the former case, but
the form of the bands and pulleys may be varied according to cir-
cumstances. The endless bands will further be enclosed in tubular
casings of any convenient form to preserve them from external 2
influences.
To show siderial time the indicator on which it is docived to hom

page_text: For convenience I have shown the bell mechanism separate from the
indicator dial, but it may be mounted on the same frame.
Figure 4 is similar to Figure 3, except that the cord or band from the
great wheel runs on an intermediate pulley turning on the axis j,
whence motion is conveyed by other bands or cords to the dial work and
bell mechanism.
As before mentioned the endless bands or cords are carried through
tubes (which it is unnecessary to show in the Drawing) to protect
them.
Figure 5 shows the transmission of motion frome one band to one or
more other bands at right angles to the first. n are band pulleys like
those before described, fast on tubular axes, turning on studs at right
angles to one another, there being one pulley on one axis and two or
more on the other. These tubular axes are geared together by bevelled
spur wheels, as shown.
Having described the nature of my Invention, and the manner of
performing the same, I declare that what I claim as my Invention to be
protected by the herein-before in part recited Letters Patent is, the com-
bination with one main clock of a number of time indicators, such as
herein described, located in different places, and operated by endless
bands or cords from the main clock, substantially as and for the purpose
herein specified.
In witness whereof, I, the said Carl Leonard Herman Lammers,
have to this my Specification set my hand and scal, this
Eleventh day of February, in the year of our Lord One thousand
eight hundred and seventy-six.
CARL LEONARD HERMAN LAMMERS. (L.S.)