A Hollow Screw as a Means for Oiling and for Securing Adjustable Back Revolving Collars of Axle Boxes.
Year: 1888

page_text: Date of Application, 4th Aug., 1838
Complete Specification Left, 6th May, 1889
Complete Specification Accepted, 8th June, 1889
A Hollow Screw as a Means for Oiling and for Securing Adjustable
Back Revolving Collars of Axle Boxes.
I, EBENEZER PARTRIDGE, of Litho Villa, Poplar Avenue, Edgbaston, Birmingham,
Founder and Manufacturer do hereby declare the nature of this invention to be
as follows:-
This invention relates to a novel manner of making the screw pin by which an
adjustable revolving back collar of an axle can be affixed, said screw being hollow to
enable it to be used as a means for feeding oil to the inner chamber of an axle box.
The invention is based upon a previous patent granted to me on the 28th September
1885 No. 11539.
For the purpose of my present invention, I make the entrance of the hollow screw
of square or triangular shape to enable it to be turned by a correspondingly shaped
key and I recess the lump of the axle box into which the screw is inserted, in such
a manner that the screw has to be set flush with the lump and when the back
revolving collar is adjusted, the screw by a reverse turning by the key has its head
brought into the notch of the collar which is opposite to it. The hollow serves for
feeding oil to the axle box from its inner end.
By this invention, I dispense with the sliding plate P the guide pin Q and the
screw pin V described in the Specification of my Patent above referred to.
Dated this 4th 1... CA 1000
H. GARDNER,
166, Fleet Street, London,
Agent for the said Ebenezer Partridge.

page_text: Back Revolving Collars of Axle Boxes.
I EBENEZER PARTRIDGE of Poplar Avenue, Edgbaston, Birmingham, Founder and
Manufacturer, do hereby declare the nature of my said 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 a novel manner of making the screw pin by which
revolving back collar of an axle can be affixed and made adjustable, said screw
being hollow to enable it to be used as a means for feeding oil to the inner chamber
of an axle box.
The invention is based upon a previous patent granted to me on the 28th
September 1885 No. 11539.-
For the purpose of my present invention I make the entrance of the hollow screw
of square or triangular shape to enable it to be turned by a correspondingly shaped
key and I recess the lump or lug of the axle box into which the screw head can be
inserted in such a manner that the screw has to be set flush with the lump and when
the back revolving collar is adjusted, the screw by a reverse turning by the key has
its head brought into the notch of the collar which is opposite to it. The hollow
screw serves for feeding oil to the axle box from its inner end.
My invention can be clearly understood by reference to the annexed drawings.
Figure 1 is a sectional view of an axle box, back collar and hollow screw for oiling
purposes the axle itself being in elevation.
Figure 2 is a perspective elevation of an axle box, back collar and square of axle
the head of the hollow screw being shown in one of the notches of the back collar, in
other words, the position the hollow screw occupies for fixing the back collar such as
when a vehicle is running.
Figure 3 is a detached perspective view of the back collar.
Figure 4 is a perspective view of a shield which passes over and protects the
cottar pin in its place and the back collar from dirt when the vehicle is running.
Figure 5 is a perspective view of the axle box with the shield in position and
enclosing the back collar and also the otherwise exposed part of the hollow screw seen
in Figure 2.
Figures 6 and 7 are face and side views of a spanner with one end prepared for
screwing up or unscrewing the hollow screw, the other face of it having studs for
screwing up or unscrewing the back collar.
In the positions indicated at Figures 1 and 2 the hollow screw A with its
triangular opening for insertion of key which is the essential part of my present
invention is fitted in the lump or lug B of the axle box the aperture through the
screw A being for the purpose of feeding oil into the inner chamber C of the axle
box D for lubricating purposes.
E is the back collar provided on its exterior rim with a series of notches F F in its
circumference into one of which notches after the back collar E is adjusted the head G
of the hollow screw A can engage to prevent the back collar E turning or moving
until the head G of the hollow screw A has been turned forward and occupy a
position in the recess H of the lump B provided for it, its front edge being then flush

page_text: with the face of the lump and into which position the head G of the hollow screw A
is arranged previously to the adjustment of the back collar E against the leather
washer I which abuts against the collar J of the axle K another leather washer I
being on the other side of the collar J.
The notches F F are all of the same size surrounding the adjustable back collar so
that the head G of the hollow screw can when moved back engage in either of said
notches which correspond to the position necessary for the screw to enter.
The head G of the hollow screw A is shown at figure 2 of the drawing with a
triangular opening L but it may be of square or other shape and to enable said
screw A to be turned I provide a triangular shaped stud M on one face of a spanner N
as at Figure 7.
The head G of the hollow screw A has two holes formed in it for the reception of a
cottar pin P which prevents the hollow screw turning during the motion of a vehicle
to which the invention is fitted whereby the hollow screw is locked.
The back face of the back collar E has a couple of holes Q as seen at Figures 12
and 5 into which the studs R, R, of the spanner N can engage when adjustment is
required and the back collar has to be turned which can only be effected when the
head G of the hollow screw A is within the opening H of the lump or lug B.
The hollow screw and the back collar shown in Figure 2 in the position they
respectively occupy are exposed to dirt, 1 therefore employ a ring shield S for
covering up the notches F and also attach thereon a hood T for covering up the head
of the screw A as more particularly seen at Figure 5, the hood serving also to prevent
the cottar pin P working loose when in place in the screw head G.
This ring shield is secured in position by a small screw U which takes into the back
collar but it may have a spring taking into a hole and having sufficient pressure to
hold the ring shield in place.
I provide the inside of the hood with a projecting button V which may be of the
same metal as the shield, or formed from the shield by indenting it, or I fix a rubber
or leather plug in lieu thereof, which when the shield is in position over the back
collar and screw head, shuts up the hole in the screw A and prevents a back flow of
oil should the axle box be under the axle when fitted to a wheel.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
1. The manufacture and employment of a hollow screw in an axle box, as an oil
feeder to said axlo box and as an improved means for securing, a back collar having
indents in outer half of front rimmed part for adjustment in place as described and
substantially as shown in the annexed drawings.
2. In combination with a hollow screw having a triangular or square opening (to
enable it to be turned) and an enlarged head, the notched rimmed back collar, and
the shield for protecting said screw head, and cottar pin, also back collar, as described
and substantially as shown by the annexed drawings.