An Improvement in Bearings for Tramway Trucks and other Vehicles.
Year: 1894

page_text: Date of Application, 22nd May, 1894th
Complete Specification Left, 12th Feb., 1895-Accepted, 16th Mar.,
1895.
"
PROVISIONAL SPECIFICATION.
An Improvement in Bearings for Tramway Trucks and other
Vehicles..
WALLIS & STEEVENS LIMITED North Hants Iron Works, Basingstoke, Hants,
Engineers, do, hereby declare the nature of this invention to be as follows:-
It relates to an improved construction of bearings for tramway trucks, and.
similar waggons and carriages providing means for the protection of the bearing
surfaces from damage by sand and other injurious substances and affording: a
convenient means of lubrication. This present invention is an improvement on the.
invention contained in a Patent No. 4708 A.D. 1893 granted to Arthur Herbert
Wallis for "An improvement in bearings for tramway trucks." Whereas in that
Patent two bearings were provided for and other improvements, this present inven-
tion provides for one, or, more bearings. being carried the whole length, or part
only of the spindle working in the same and the employment of one oil chamber.
only with one, or more lubricating, pads, or wieks. This oil chamber may be
placed centrally under the bearing, or partly, or wholly to one side, but: so that
the lubricant fed on to the axle by the pad, or wicks may pass along the spindle
and effectually lubricate the bearing surface, or surfaces. The bottom part of the
oil chamber of suitable section is so arranged that the lubricant after circulating
through the bearing drains back to the point at which the wicks first fed it on to
the spindle. In connection with this improved bearing we construct the bearing
and connecting parts in two, or more parts and use similar methods for connection,
means of keeping out dust, &c., as in the before mentioned Patent No. 4708,
A.D. 1893.
Doted this Olot dou of Mar 1801
For WALLIS & STEEVENS, LIMITED,
JOHN ERNEST WALLIS, Secretary:
"
COMPLETE SPECIFICATION.
An Improvement in Bearings for Tramway Trucks and other
Vehicles.
WALLIS & STEEVENS LIMITED North Hants Iron Works, Basingstoke,
Engineers, (a communication from A. H. Wallis, South African Republic) 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 an improved construction of bearings for tramway
trucks, wagons and carriages providing means for the protection of the bearing
Búrfaces from damage by sand or other injurious substances and affording a
convenient means of lubrication. This invention is an improvement on a Patent
granted to Arthur Herbert Wallis for "An improvement in bearings for tramway
We construct one, or more
trucks" dated March 4th 1893 and numbered 4708.
bearings which we place on the axle between the two wheels and these are

page_text: connected by means of a tube of any suitable section so that the bearing or
bearings are only left open at the outer ends. We construct two sliding pieces
which we fit in grooves formed at the outer ends of the bearings and these sliding
pieces have circular holes through them through which the axle passes these holes
being either made to fit the axle or to fit on the bosses of the wheels which may be
made.wide enough for the purpose. As a most convenient means of lubrication
we provide a chamber below the axle provided with a suitable opening for the
admission of lubricant which opening can be closed by a plug, or cover.
On the
lower side of the axle we place a lubricating pad with wicks arranged to hang
down or be fixed down into the lubricant and we hold the lubricating pad in
position by means of a spring. The lubricator may be placed at any point on the
axle, but preferably in the centre which is as it is shown on the accompanying
drawings. The bearing may be made to run the whole length of the axle as shown
at Fig. 1 or may have the bearing surface at the ends only as shown in Fig. 2.
The lubricant fed on to the axle by the lubricating pad works itself along the axle
throughout the length of the bearing or bearings. The connecting tube is con-
structed so that the lubricant dripping from the bearing or bearings drains back to
the lubricator chamber. For the surer conveyance of the lubricant when two
bearings are used and the distance from the lubricating pad is great we make a
groove or grooves in the axle itself or connect the bearings by a narrow piece
which may be straight as shown at Fig. 4 or curved as shown at Fig. 5. This
conducts the lubricant the same as if it were a continuous bearing from end to end.
To facilitate the removal of the bearings when required and when both wheels are
firmly attached to the axle we construct the bearing or bearings and the tube
connecting it or them in two parts, one part being that which comes above the
centre of the axle and the other part that which comes below and we provide
suitable means for attaching the two parts together. This is more particularly
described by reference to the drawings on Sheets Nos. 1. 2 and 3.
Fig. 1. is a vertical longitudinal section showing a single bearing.
Fig. 2. is a vertical longitudinal section with two bearings.
Fig. 3. is a vertical transverse section on the line X Y. of Fig. 1.
Fig. 4 shows in part the bearings, axle, &c., as on Fig. 2. but with the bearings
connected by a straight connecting piece.
Fig. 5. shows the same as Fig. 4. but with a curved connecting piece.
Fig. 6. shows a vertical transverse section of Fig. 4. through the line X1 Y
A represents the axle and B B wheels attached to it having bosses C. C.
attached. D is a casting in which the bearing J is formed & E a casting in
which the oil reservoir is formed the two castings being jointed together on the
centre line F. by the lugs and bolts & thus forming a tube connecting the two
ends of the bearing or bearings together. H. H are slides fitting on to the
bosses C. C. the joints being fitted with pieces of leather fibre or other suitable
material I. I. as shown, or in any other suitable manner. These slides may be
wholly of fibre, or wood if preferred. K. K. are covers carried across the top
aud down the sides of the slides H and also continued to cover the slides in at the
outer sides but having holes for the bosses C. C. to pass through. L is a lubricating
pad with wicks attached hanging down or fixed down into the oil reservoir the
pad being held in position by the spring M. N is the oil reservoir connected to
the ends of the bearing by the passages (. O. P is an opening through which the
lubricant is inserted which may be closed by a lid or plug. Fig. 2. shows the same
arrangement as Figs. 1 and 3 but with bearings at the ends only and not carried
the whole length of the spindle. Fig. 4. shows part the same as Fig. 2. but with
the bearings connected together by a straight piece. A. is the axle D. is the
casting in which the bearings J. J. are formed. R is the piece connecting the two
bearings J. J. together. Fig. 5. is the saine as Fig. 4. but with a curved piece R
connecting the bearings J. J. In Fig. 6. A is the axle D part casting in which
the bearings are formed and R the piece connecting the bearings. In working
the bearings are efficiently lubricated by the lubricating pad working in the

page_text: ordinary manner and sand and other injurious substances are excluded from the
bearings by the tube connecting the ends of the bearing or bearings together and
also by the slides at the outer ends. The following points are self evident that
instead of employing two castings D. & E. bolted together they may be constructed
together in one casting when desired, or made in more than two parts that the
slides H instead of fitting on the bosses of the wheels could fit on to the axle
instead.
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 :-
First. The construction of a tube connecting two bearings or the extremities of
one bearing which are or is lubricated by one self acting lubricator substantially as
described.
Second. The construction of a tube connecting two bearings or the extremities
of one bearing which is lubricated by one self acting lubricator with slides at their
outer ends for the purpose and substantially in the manner described.
Third. The construction of an oil reservoir with passages so that the lubricant
from the bearings drains back into the reservoir substantially as described.
Fourth. The connecting together of two bearings used with one lubricator by a
strip for conducting the lubricant substantially as described.
Dated this 11th day of February.1895.
For WALLIS & STEEVENS, LIMITED,
JOHN ERNEST WALLIS, Secretary.
For WALLIS & STEEVENS, LIMITED,
JOHN ERNEST WALLIS, Secretary.