Improvements in Ball Castors, which are also applicable as Ball Bearings for Sliding Doors and other Heavy Structures.
Year: 1896

page_text: Date of Application, 8th Oct., 1896-Accepted, 28th Nov., 1896
COMPLETE SPECIFICATION.
Improvements in Ball Castors, which are also applicable as Ball
Bearings for Sliding Doors and other Heavy Structures.
We, WHEELER ROSE COLLINS and WILLIAM ADOLPH SCHORR, both of
1320 17th Street, in the City of Denver and State of Colorado, United States of
America, Gentlemen, 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 :-
Our invention relates to improvements in ball castors and consists of the features.
hereinafter described and claimed, all of which will be fully understood by
reference to the accompanying drawing in which is illustrated an embodiment
thereof.
In this drawing
Fig.
is a vertical section taken through the device shown attached or in.
position for use.
Fig. 2 is an underneath view of the device in detail.
Fig. 3 is a similar view with the bottom plate and the large ball removed.
Fig. 4 is a sectional view illustrating another form of construction.
Figs. 5 and 6 are top and bottom views respectively of the same form, shown in-
detail.
Similar reference characters indicate corresponding parts in these views..
Referring first to Figs. 1, 2 and 3, the numeral 5 designates an inverted
cylindrical cup having a horizontal flange 5. In this cup are placed the small.
balls 6, which engage the upper part of the large ball 7. This large ball projects
from the cup and engages the floor or other surface, upon which the article or
structure rests, to which the ball castor is applied. This ball 7 is held in place by
a plate 8 apertured to allow it to protrude. This plate engages the ball slightly
below the center, and consequently retains it in place. The plate 8 is secured to
the flange 5 by rivets 9, or other suitable fastening devices. The leg 10, to which.
the ball castor is applied as shown in the drawing, is recessed to receive the cup 5.
The castor is secured to the leg 10 by means of screws 12 or other suitable.
fastening devices inserted in co-inciding apertures formed in the plate 8 and the
flange 5. These screws 12 enter the leg and are of sufficient length to hold the
castor securely in place. The vertical wall of the cup occupies a position at right
angles to the bottom. Hence, the balls 6 engage the said wall at two points only.
In the form of construction shown in Figs. 4, 5 and 6, let the reference
character 5 designate the inverted cup, whose bottom is closed by a plate 8ª
having a projection 8 engaging a recess formed in the leg 10. This cup has
horizontal flanges 5d having apertures co-inciding with other apertures formed in
the plate 8. The device is secured to the leg 10 by suitable fastening devices 12.
which pass through apertures formed in the flange 5d and the plate 8 and project
into the leg 10. In this form of construction the cup projects below the leg 10.
and it engages the ball 7 just below the center, whereby the said ball is securely
held in place.
This invention can be employed in all relations where castors or rolling supports
of any kind are needed. It may be attached to sliding doors, either at the top or-
bottom or both; it may also be used on safes and other heavy structures, and on.
cars and other vehicles which run upon a metal track.

page_text: Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is:
As an improved article of manufacture, a ball castor comprising an inverted
cup, a number of small balls located therein, and a large ball whose lower portion
protrudes therefrom, while its upper portion engages the small balls, and suitable
means for fastening the castor in place, substantially as described.
Dated this 2nd day of September 1896.
WHEELER ROSE COLLINS.
WILLIAM ADOLPH SCHORR.