Improvements in Wheel Hubs.
Year: 1895

page_text: Date of Application, 10th Oct., 1895-Accepted, 16th Nov., 1895
COMPLETE SPECIFICATION.
Improvements in Wheel Hubs.
I, JOHN HENRY HARTMAN, of Germantown, in the County of Columbia, and
State of New York, United States of America, Inventor, 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:―
This invention relates to wheels, and particularly to such as we use on carriages,
wagons, trucks and similar vehicles; and the object thereof is to provide means for
securing the wheel to the axle or spindle, and to prevent the wheel from coming off
of said spindle or axle in the operation of the vehicle; and with this and other
objects in view the invention consists in the construction, combination and
arrangement of parts hereinafter described and claimed.
The invention is fully disclosed in the following Specification of which the
accompanying drawings form a part in which ;-
Fig. 1 is a longitudinal section of the hub of a wheel, also showing my improved
means for securing the wheel to the spindle, in section.
Fig. 2 a similar view with only a portion shown in the section; and,
Fig. 3, a side view of the wheel, or an end view of the hub.
In the practice of my invention, I employ a wheel provided with the usual hub A,
through the longitudinal center of which passes the tubular casing B, which is
adapted to serve as a box or housing for the spindle C, of the axle D.
The outer end of the hub A, is provided with the usual band E, and the central
portion of the outer end of the hub is provided with a circular chamber or cavity F,
into and through which the outer end of the spindle C, projects.
The outer end of the spindle C, is reduced in size, or provided with an
extension G, and said extension is provided with a right screw thread, and mounted
thereon is a cap H, which is correspondingly screw threaded.
The cap H, is provided at its inner end with an outwardly directed rim h, on
which is formed an inwardly directed annular flange which is adapted to surround
the outer end of the tubular casing B, as is clearly shown in Figs. 1 and 2, and
between the outer end of said tubular casing B, and the rim of the head H, is a
ring K, of any desired packing material.
The extension G of the spindle C is provided with a central bore g, the inner
surface of which is provided with a left screw thread or a thread which is the
reverse of that on the outer surface of said extension and passing through the end
of said cap H and into said central bore is a correspondingly screw threaded bolt L
provided with a head M and on which is mounted a disk, or circular plate N, which
is substantially of the same diameter as the inner diameter of the band E on the
outer end of the hub A.
The operation will be readily understood from the foregoing description when
taken in connection with the accompanying drawing. The hub A, can never
become accidentally detached from the spindle C, for the reason that by reason of
the reverse threads formed on the outer surface of the extension G, of the spindle C,
and in the inner surface of the central bore thereof, the said cap G, can never turn
or work loose, it being securely held in place by means of the screw threaded bolt L,
said screw threaded bolt being also held in place by said cap and the only way that
that cap can be removed from the spindle C, is to first remove the bolt L, by means
of a wrench applied to the head M thereof.
It will also be seen that by means of the plate or disk N, all dirt and other
substances are prevented from entering around the cap G, or into the space occupied

page_text: thereby, and it will thus be seen that I accomplish the object of my invention, by
means of the device which is similar in construction and operation, and one which is
comparatively inexpensive.
My invention is not limited to the exact form, construction and arrangement of
parts shown and described and I therefore reserve the right to make all such
alterations therein and modifications thereof, as fairly come within the scope of the
invention.
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. The means for securing the hub of a wheel to a spindle, comprising a scrow
threaded cap mounted on a screw threaded extension of said spindle said extension
being also provided with a central bore having a screw thread formed therein which
is the reverse of that formed on the outer surface thereof, and a screw threaded
bolt passing through said cap into said central screw threaded bore, substantially
as shown and described.
2. The means for securing the hub of a wheel to a spindle, comprising a scrow
threaded cap mounted on a screw threaded extension of said spindle said extension
being also provided with a central bore having a screw thread formed therein
which is the reverse of that formed on the outer surface thereof, and a screw
threaded bolt passing through said cap into said central screw threaded bore, and n
plate or disk mounted on said bolt substantially as shown and described.
3. The means for securing the hub of a wheel to a spindle, berein shown and
described, which consists of a screw threaded cap as G, adapted to be connected
with a screw threaded section of the spindle, said cap being provided at its innor
end with an annular rim on the inner side of which is formed an annular, inwardly
directed flange, and the extension of said spindle being provided with a central bore,
having a screw thread formed therein the reverse of that on the outer surface
thereof, and a screw threaded bolt, which passes through the head of said cap and
into said bore substantially as shown and described.
4. The combination with the hub of a wheel, within which is placed a tubular
casing as B and an outer end of which is provided with a band as E, and a circular
chamber as formed therein, of a cap as H adapted to be mounted on a screw
threaded bolt as L which is adapted to enter a central bore formed in the end of the
extension of the spindle, the screw thread of said bolt being the reverse of that
formed on the said cap, and a disk or plate as N mounted on said holt substantially
as shown and described.
Date this 10th day of October 1805
WHEATLEY & MACKENZIE,
40 Chancery Lane, London, W.C., Agents.