IMPROVEMENTS IN THE. CONSTRUCTION OF HUBS OR AXLE BOXES FOR LOOSE PULLIES OR WHEELS
Year: 1874

page_text: LETTERS PATENT to Charles Eugene Barber, of Berlin, in the Kingdom
of Prussia, Merchant, for the Invention of "IMPROVEMENTS IN THE.
CONSTRUCTION OF HUBS OR AXLE BOXES FOR LOOSE PULLIES OR WHEELS."
A communication from abroad by Wellsly W. Crane, of Auburn, in
the State of New York, United States of America.
Sealed the 29th December 1874, and dated the 4th July 1874.
PROVISIONAL SPECIFICATION left by the said Charles Eugene Barber
at the Office of the Commissioners of Patents, with his Petition,"
on the 4th July 1874.
I, CHARLES EUGENE BARBER, of Berlin, in the Kingdom of Prussia,
Merchant, do hereby declare the nature of the said Invention for.
•
"IMPROVEMENTS IN THE CONSTRUCTION OF HUBS OR AXLE BOXES FOR LOOSE PULLIES.
OR WHEELS," to be as follows:-
. The object of the present Invention is to avoid the necessity of
frequently lubricating the rubbing surfaces of loose pullies or wheels.
which rotate loosely on shafts or axles. To this end the hub of the
pulley or wheel is made hollow, so that it may enclose an internal hub:

page_text: through which the journal of the shaft passes. As the inner hub is made
of smaller diameter than the internal diameter of the outer hub there
will be a vacant space between them. This forms a reservoir for the oil
or lubricating material, which is supplied through holes made in the
hub, and provided with oil-tight screwed stoppers. The ends of the outer
hub are closed in by circular cap pieces, and the central hole through
which the shaft passes is turned down internally to a feather edge in
order to prevent the oil from escaping. At one or two places in the
inner hub holes are made for the oil to pass through to the shaft inside
as the pulley and shaft revolve. The inner and outer hubs are made in
two separate pieces and fitted together, and the end caps may be fixed
in place by screws or otherwise; or the whole hub may be cast in one
piece. When the hubs of pullies are constructed in this manner, and.
are properly supplied with oil, they will run for a considerable time
without further attention so far as lubrication is concerned.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
**filed by the said Charles Eugene Barber in the Great Seal Patent
Office on the 4th January 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHARLES
EUGENE BARBER, of Berlin, in the Kingdom of Prussia, Merchant, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fourth day of July, in the year
of our Lord One thousand eight hundred and seventy-four, in the
thirty-eighth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said Charles Eugene Barber, Her
special licence that I, the said Charles Eugene Barber, my executors,
administrators, and assigns, or such others as I, the said Charles Eugene
Barber, 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,
ise, exercise, and vend, within the United Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention for
"IMPROVEMENTS IN THE CONSTRUCTION OF HUBS OR AXLE BOXES FOR LOOSE

page_text: PULLIES OR WHEELS," being a communication to me from abroad by
Wellsly W. Crane, of Auburn, in the State of New York, United
States of America, upon the condition (amongst others) that I, the said
Charles Eugene Barber, my executors or administrators, by an instru-
ment in writing under my, or their, or one of their hands and seals,
should particularly describe and ascertain the nature of the said -In-
vention, 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 Charles Eugene Barber; 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 Drawing hereunto
annexed, and to the letters and figures marked thereon (that is to
say):
The object of this Invention is to avoid the necessity for constant
attention to the lubrication of the rubbing surfaces of pullies and wheels
which are left free to rotate upon their shafts or axles. In order to attain
this object I convert the hub of the wheel or pulley into a lubricating
box, and by maintaining a supply of oil therein I ensure the running of
the wheel or pulley for a long period, without any attention thereto
being required.
In the accompanying Drawing the Invention is shewn as applied to a
loose band pulley, but it will be obvious that it is equally applicable to
intermediate gear wheels and other loose wheels.
Fig. 1 is a side elevation of the loose pulley formed according to my
Invention, and Fig. 2 is a cross section of the same.
A is a hub of the pulley, forming a lubricating box, the ends of which
are pierced to allow of the passage of the axle B through the hub. The
hub is cast with a short concentric cylindrical bearing C, which is con-
nected by radial arms D, D, to the outer portion A of the hub.
The openings in the hub by which the pulley is passed on to the shaft
are chamfered internally, as shewn at Fig. 2, and they are turned so as
to fit the shaft with exactness, and prevent so far as may be the escape
of oil from the hub or lubricating box.

page_text: An opening closed by a screw may be made in any convenient part of
the hub for supplying oil thereto.
Having now set forth the nature of the Invention of "Improvements
in the Construction of Hubs or Axle Boxes for Loose Pulleys or
Wheels," and explained the manner of carrying the same into effect,
I wish it to be understood that under the above in part recited Letters
Patent I claim, converting the hubs of loose pulleys or wheels into
lubricating boxes, in the manner and for the purpose above described.
In witness whereof, I, the said Charles Eugenè Barber, have here-
unto set my hand and seal, the Second day of January, in
the year of our Lord One thousand eight hundred and seventy-
five.
CHARLES EUGENE BARBER. (L.S.)