THE ELGIN NATIONAL WATCH COMPANY
OBSERVATORY STORY
A
small whitewashed and pumpkin-shaped domed building
sits perched upon
a hill. It once overlooked the expansive site of the
With no real national time standards and an increasing amount of railroad
traffic, the accuracy for correct time became much more significant.
Disastrous rear-end collisions occurred when the time interval between
trains had failed. Some individuals
soon linked these collisions with faulty chronometers the train's engineers were
carrying. The slightest speck of dust could have caused an error of a few
seconds to several minutes. An
error of this sort with the close schedule the trains had could only mean deadly
results.
It would not be until 1908 that the United States government came to
regard timing efficiency of such economic importance as to take a hand in its
management. It was President Theodore Roosevelt who directed the United
States Bureau of Standards to set up tests for watches.
The disclosed report showed that time controls in America were totally
inadequate and something had to be done about it.
Already at the forefront of watch manufacturing the Elgin National Watch
Company chose to build its own observatory.
This Observatory would further help to ensure the scientific accuracy of
its already famous timepieces.
The Elgin National Watch Company Observatory was placed into service in
1910 under the direction of William W. Payne.
Before this position with the company Payne was a professor at Goodsell
Observatory, Northfield, Minnesota, and founder of the POPULAR ASTRONOMY
magazine. The observatory's purpose was clear to observe and record precise time
from the stars and to transmit these measurements of time throughout the
factory. It was the only time observatory that was owned and
maintained by a watch manufacturer in the nation.
Because the Elgin company had decided to have the most perfect time
observatory in America, the site on which to locate it was quite a problem.
After a considerable amount of research a hill a few blocks east of the
main factory was chosen because of its gravel base.
The gravel would help to reduce the vibration of the Earth.
The Observatory was opened for business in February, 1910, and Professor
W. W. Payne was given to what amounted to a life long directorship of the
Observatory.
The building is unique in form, substantial in structure, attractive in
appearance and is fire proof in all areas for the protection of the instruments.
The dome is nearly a hemisphere in form with an opening in the
North-South direction (the meridian) three feet wide. This opening is covered by two steel shutters that weigh
about a half ton each. Yet, with
the crank and worm gear system that was manufactured by the machinist at the
watch factory it was said that the shutters open and close so easily that a boy
of six could do it.
The east part of the building has the clock vault below
the Observatory's dome. In the clock vault a series of fifty-seven light bulbs cover
the outer perimeter of this room. The
bulbs which contain carbon arc filaments are used to
maintain the constant 81 degree temperature within the
room. By using this system of lights year in and year out the temperature does
not vary more than two-tenths of one degree.
If fact the opening of the clock vault door or even heat from a human
body could have had a very noticeable effect on the temperature within this
room. The temperature is so critical because it is within this vault that the
two master clocks of the Observatory are found. Of the two clocks in the vault,
one is kept at what is known as sidereal "star" time, while the other
is kept at standard time. This is the time our watches would keep.
These clocks were also recognized by their production serial number.
The "star" time clock was known as No. 220 and the standard
time clock was referred to as No. 224. Both clocks are mounted to a concrete
pier that goes down sixty feet into a gravel
base. It is the gravel that
will reduce any inherit vibrations that may exist due to cars or trucks that
would be passing by the Observatory.
The Observatory was equipped with four Riefler astronomical clocks.
These clocks were recognized as the most accurate type of timepieces that
existed in 1910. The two clocks
found in the vault, No. 220 and No. 224, are hermetically sealed in a long glass
cylinder jar. This is done in order
to maintain partial pressure and thus eliminating barometric pressure
correction. The slightest change in
air pressure just as in air temperature could affect the rate at which the
clocks beat. The clocks were so
attuned that a change of one millimeter of air pressure would change the rate of
the clock by eighteen thousandths of a second in a twenty-four hour period. Air
could be introduced into or exhausted out of the clocks to slow down or increase
their rates, respectively.
Upstairs under the dome of the observatory, is the observation instrument
or the transit telescope. This
instrument which has a three inch objective lens was made by the Warner and
Swasey Company of Cleveland Ohio. Just
like the clocks the transit telescope, too, was mounted on a concrete pier
separate from any part of the building. The
telescope is set exactly north and south, as all time observations must be made
on the meridian. The meridian is an
imaginary north-south line.
In a room just off of the dome is the chronograph room.
Two more Riefler clocks are found mounted to yet another concrete pier.
Unlike the two clocks in the vault these two were cased within a swinging glass
door. and operated at room temperature and pressure.
Again, one clock, No. 237, would keep "star" time and the other
clock, No. 240, would keep standard time. These
two clocks were actually used as auxiliary clocks to the master clocks found in
the clock vault. The name of this
room, the chronograph room, came from a very important piece of equipment
located a bench within the room. The
chronograph is really better known as a "time recording machine."
This device would be hooked up to the "star" clock.
A cylindrical drum carries a record sheet and makes one complete
revolution in one minute. A
recording pen would leave ticks indicating each second of time of the clock. As the astronomer would be taking a reading from a star
through the transit telescope he would press a key that would send a pulse to
the chronograph. This would cause
the recording pen to make an irregular tick on the paper. The result would be a series of odd little tick marks in a
line that the pen traced on the paper of the recording drum.
The time, by the "star" clock, that the star crossed the
meridian was obtained by placing a graduated scale on the recording paper.
In this manner each tick mark is read and the average of ten marks is the
observed time by the clock when the star crossed the meridian.
The "correct" time, the actual time the star passes the
meridian, which has been observed and recorded for hundreds of years is then
compared to the "observed" time, the time the "star" clock
would keep. The difference between
the "star" time and the "correct" time is the amount of
error the "star" clock would display.
Ten or more stars would have to be observed on a clear night and the
average of the whole set is taken as the clock correction.
The correction had to be within one-hundredth of a second.
The clocks were rarely in error as much as ten-hundredths of a second.
As the years past it became apparent that the Elgin Observatory had such
popular appeal that the watch company started to use the building as their
central focus of advertising. At
the Century of Progress in Chicago in both 1933 and 1934, the gates of the
exposition were opened daily on the time determined at the Observatory.
In fact the Elgin National Watch Company pavilion was a replica of the
Observatory, but there was to be an even bigger role the Observatory would play
at the Fair.
The greatest single event on the Fair grounds was the turning on of all
the outdoor lighting. The Fair was
scheduled to open in 1932, but delays forced it to start in 1933.
1932 would be forty years since the opening of Chicago's last world's
fair the Columbian Fair in 1892. The
star Arcturus, an outstanding bright star, is forty light years in distance from
the Earth. This means that light
leave Arcturus in 1892 would reach Earth forty years later in 1932.
It was around this star that the lighting ceremony for the Fair would
center upon. Light emission from
the star were collected and the amplified into electric current. This current
was used to turn the lights on. This
was to be a one time event, but it was so successful the public wanted the
ceremony to repeat each night. The
Elgin Observatory agreed to take the ceremony over.
This also meant the collection of light from Arcturus would fall on the
shoulders of the Observatory. The
Elgin Observatory would continue to do the Arcturus ceremony every night
throughout the operation of the Fair. Needless
to say it was a terrific advertising gimmick for the Observatory as well as the
Elgin National Watch Company.
The Observatory clocks also supplied "ticker service" to many
companies. A large bronze clock
showing Elgin Observatory time was located on the street corner of the Pure Oil
Building in Chicago. Time was supplied to the Union Railroad Station in Chicago
for the starting of the first train on the New York Central Railroad when it
reduced its travel time between Chicago and New York from twenty four hours to
eighteen hours. The train was know
as the Twenty Century Limited. Ticker
service was supplied to various radio broadcast studios in Chicago so that the
correct Observatory time could be used during big band program. This was again
another way of advertising the Observatory as well as the product.
Perhaps the pinnacle of advertising came when all Lord and Lady Elgin
watches were tested for performance at the Observatory.
A special truck would bring thousands of these watch up from the factory
to be tested. Each watch would
leave bearing an Elgin Observatory certificate which would indicate perfection
of precision in timekeeping ability. They
were indeed "timed from the stars."
Gary L. Kutina
at the
Planetarium for school year 2006 - 2007.
Hope you enjoyed the story.
Questions
regarding the Observatory can be emailed to Gary L. Kutina.
The email address is gkutina@wideopenwest.com
(Above is the MARK HOUSE. This building contained a cement pier inside
along with an apparatus which produced an artificial star. Here the
astronomer
would point the Meridian Transit Telescope to focus and orientate the scope due
North)
BACK TO HOME PAGE