An Improved Device for Inserting Balls in the Bearings of Wheels or the like, and for Placing Wheels with Loose Balls in their Bear- ings on Horizontal Axles.
Year: 1898

page_text: Date of Application, 24th June, 1898-Accepted, 30th July, 1898
COMPLETE SPECIFICATION.
An Improved Device for Inserting Balls in the Bearings of Wheels or
the like, and for Placing Wheels with Loose Balls in their Bear-
ings on Horizontal Axles.
I, MARIUS HOGREFE, of 11, Laederstraede, Copenhagen, in the Kingdom of
Denmark, Wholesale Merchant, 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;-
-
The object of the present invention is to provide an improved device facilitating
the insertion of balls in the bearings of wheels or the like and whereby it will
be possible to place wheels with ball-bearings, in which the balls are lying loose,
on horizontal axles.
In the accompanying drawings Figure 1 shews a longitudinal section through
the nave of a wheel of the afore-mentioned kind with the device inserted.
Figure 2 shews the axle upon which the wheel is to be placed, and
Figure 3 is a longitudinal section through the nave of a wheel illustrating how
the balls are inserted into their respective grooves.
The device consists of a cylindrical tube or rod one extremity of which is
formed pointed like a cone which may be incurved as shewn in the drawing, whilst
the other end is provided with a screw-threaded hole or recess i¹ corresponding to
the screwed projecting part of the axle a which screwed portion when the rod
is removed serves for fixing the wheel-cap.
The outer diameter of the tube or rod h is made exactly the same as the diameter
of the axle a.
The nave o in Figure 1 is shewn provided with three grooves for example
for receiving the balls q but the number of the grooves is immaterial.
Such a nave cannot be placed directly on the axle a as it would not be possible
to get the balls into their respective grooves and remain there, unless the balls
were supported from the inside.
The apparatus or device his used for facilitating the insertion of the balls into
their bearings and for affording the necessary temporary support to the balls. The
operation of inserting the balls in position and placing the wheel on the axle-arm
is effected as follows:-
After the wheel o has been placed horizontally as shewn in Figure 3 the device h
with its conical extremity uppermost is introduced from underneath into the cylin-
drical aperture of the nave o of the wheel and pushed upwards, until the cone is
level with the lowest of the grooves p. The necessary number of balls q are then
filled into the cylindrical aperture and will slide down along the conical head of
the device h forming a ring round the same. By now pushing the device upwards
the balls will be forced to the sides and take up their positions in the grooves.
The device h is then pushed further upwards, until its conical head is level with
the next groove, whereupon the balls for this groove are placed in position in the
same manner as before, and so on until all the grooves have been filled with balls.
This operation is illustrated in Figure 3 where the device is shewn in position for
placing the balls in the second of the grooves.

page_text: As long as the device remains in the nave o of the wheel the balls cannot fall
out, and the wheel may therefore be turned so as to assume a vertical position
and carried in front of the axle, upon which it has to be placed.
The part of the tube or rod h is now screwed on to the projection of the axle
and as the outside diameters of the rod h and the axle are identical, the wheel can
now be readily pushed over on to the said axle without it being possible for the
balls to come out of their grooves. The wheel is now in its proper position and
the device may be removed.
Or the axle arm a may be recessed and screw threaded internally, a corresponding
screwed projection being provided on the rod h for fitting therein, whilst the wheel
is being pushed from the part hon to the axle a. Or the recess at the extremity
of the axle may be made conical so as to fit the conical head of the rod device.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, I declare that what I claim is;-
1. The improved device, consisting of a cylindrical rod or tube formed conical
at one end and having an outside diameter corresponding to the diameter of the
wheel axle with means for temporarily fitting the rod or tube to the aforesaid
axle substantially as and for the purposes described.
2. In the device as claimed in the preceding claim, the arrangement of a screw-
threaded hole at one of its extremities for the purpose of attaching the said device
to the projection on the wheel axle substantially as described.
Dated this 24th day of June 1898.
JOHNSONS & WILLCOX,
47, Lincoln's Inn Fields, London, W.C., Agents.