The times. [volume] (Washington [D.C.]) 1897-1901, 1901-03-14
A PATENT OFFICE EXHIBIT
A Great Showing to BE Made al
the Pan-American Exposition.
Il. IL. Withcrspoon's Report Contains
u List of the Sciences and Useful
Arts That VIII Be Represented
ActunI Machines Instead of Models

Arts That VIII Be Represented
a, Actual Machines Instead of Models.
! T. r Nitherspoon. Examiner of the
! Patent Office together with whom Wal
ter H. Chamberliu. Assistant Commission
err and Edward V Shepard. Chief Clerk.
| constitute the commission appointed by
! Commissioner Duell to collect and ar
/ range the Patent Office exhibit at the
| Pau-Amcrican Exposition, yesterday sent
the following report to Assistant Com
missioner Chlmberlin, describing the ex-
hibt
The Constitution provides that in or
/ der to promote the advancement of
/ science and the useful arts there may be
| secured to inventors or discoveries for
/ limited times. the exclusive rights to
/ their inventions or discoveries. and the
purpose of the Patent Office exhibit is to
convey to the public the Importance of
! our patert system, which has grown up
under laws made in accordance with this
! provision.
an order to do this. some of the latest
! advances in the various arts and sciences
I have been selected for illustration. and
! this exhibit as a whole will be made up
! of working machines belonging to the
| selected classes of invention. and of
! diagrams and explanatory cards briefly
explaining the salient principles involved
/ in each
Heretofore at various expostions it
was customary to show a large number
OF models. illustrating various arts: but
owing to the fact that such models are
| now more or less out of date. and are
| incapable of actual operation, this year
| it was decided to make the radical change
of operating as many actual machines as
possible, so that from these the public
! could realize the great additions to their
| comfort which they are receiving at the
| hands of the inventors OF this country.
Talking machines might be cited as
| one of the arts selected, and its exhibit
| tion will involve sectional models show
| ing on an enlarged scale the sound waves
constituting articulate speech, and full
sized machines in actual operation.
| Diagrams showing the difference between
| musical waves in the air and those Of
articulate speech will be provided, and
| cards explaining briefly the main points
displayed will be employed in connection
| Herewith. From the whole, Iayman in
few minutes will be able to get an ac-
curate idea of just how and why a
graphophone, gramophone. or a tele-
phone reprOduces articuiate speech
The photographic transmission of
| messages is another art selected which
will be illustrated by two working ma
chimes. These instruments in practice en-
able a man in Washington to write a
check, message, or a letter. and have IL
faithfully reproduced at distant city in
his own handwriting on similar machine.
At the exposition both the sending and
receiving machines will be near each other
and connected by miles of wire the WISH
tor may write what he pIeases with the
pencil of one machine and watch the
pencil of the other automatically copy his
own handwriting, through electric cur
rents sent along the wire connecting the
two instruments. Suitable explanations of
now aud why it operates will be supplied
In order to give the public an idea of
how pictures may be electrically repro
duced at distant points machines for ac-
comprising this purpose will be likewise
connected by miles of wire and photo
graphs placed in one will be reproduced
on the other, so that the whole operation
can be taken In a once. A sectional mod
Ell Of a carbOrundum furnace will show
just how this important abrasive material
is manufactured and lust what IL looks
like when the furnace is opened.
The earliest and latest improvements
IN harvesting machinery will be illustrated
oy suitable operating models. and in the
art Of printing the Linotype and Monotype
giving the public a comprehensive idea of
what they mean to our great daily papers
"A complete X-ray outfit will be in OPP
Grafton; an exhibit of high vacuum phe-
nomena, together with suitable diagrams
illustrating the principles and the very
recent discoveries connected with these
sun mysterious but now better known
rays, will be provided
An influence machine of the very lat
est pattern will be operated and its appli-
cation to therapeutics and other sciences
made clear.
The art of transmitting articulate
speech by means of the variations in a
beam of light reflected to a distant sta
ton VIII be illustrated by working
radiophone instrument. and its principIe
and mode of operation made clear
The manufacture Of printing paper by
the Sulphide process will be illustrated
10y beginning with the original wood and
showing each stage through the chips
the half stuff, the wet pulp and so on to
the finished product. a picture twelve
feet long Will illustrate a late pattern of
paper mill. and the whole operation made
so clear that it may be digested in a
short time.
In a similar manner the manufacture
of books and other articles from linen
fibre VIII be Illustrated. and also fine
collection Of tubes, washers. and pipe
connections made from Vulcanized fibre
will be displayed
The art of photo-lithography will be
clearly shown and explained. The art OF
mercerizing cotton will be illustrated
with samples and clear explanations.
"A cotton press producing round bales
of cotton will make clear this important
Improvement, and an inCandescent
burner. using a Welsbach manteI and
consuming oil, will make clear to people
who live in the country that they will
not need to have gas to light their
streets in order to get the benefit of the
best illumination.
y number of other useful and interest
ing arts, which could not well be shown
owing to the size of the mechanism. will
be illustrated as in operation on moving
picture machines; that is. the improved
way OF putting out fires along the river
front, adopted by the city of New York
and involving a freboat throwing its
powerful streams; an improved loom;
an automobile fire engine: an immense
snow pillow. clearing the way for fast
trains: hosting and conveying. as Illus
tratcd by the Brown device. pneumatic
tools. and the fip-fap' railroad ON
Coney Island.
'kromscops. invented by Mr.. Ives, of