Improvements in Brazeless Frames suitable for Velocipedes, Motor Cars and similar purposes.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Brazeless Frames suitable for Velocipedes, Motor
Cars and similar purposes.
JOHN JAMES UNDERWOOD, 36, Wheeler Street, Birmingham, Cycle Enameller,
do hereby declare the nature of this invention to be as follows:-
The object of this invention is to contruct the frames of velocipedes, motor
cars and simular frames in such a method as will obviate the necessity for brazing
the joints together as usually adopted.
In carrying this invention into effect I construct the joints so that the tubes
cross each other at an angle, one of the tubes being grooved so as to be locked by
its companion tube in position. What are generally known as the top and
bottom head lugs of cycles are constructed with a large central hole through
which the front or head tube of the frame is passed, the lugs being secured into
position on the front tube by any convenient mechanical method, pins or screws
being, in some instances used for this purpose. On each side of the said front
tube is the top and bottom lugs sockets ears are provided which are bored to suit
the angle of the frame. In both of these side holes belonging to the top lug
there are fitted two tubes, which are preferably used instead of the one top tube
as usually employed also into the two holes on the bottom lugs are fitted the two
tubes which are preferably used instead of one tube as usual for the bottom bar
of frame. In this invention the two tubes which pass through the socket ears
of the top and bottom lugs are grooved to a radius to suit the diameter of the
front tube where they come into contact with the above mentioned front tube.
It will be readily seen when the tubes fitted into the socket ears and further
locked into position owing to the grooves through which the front tube is passed,
that they cannot be taken to pieces unless the front tube itself is removed. In
building up the frame what is known as the seat pillar lug is constructed in a
similar manner to the -top and bottom lugs above mentioned, the large central
hole in this case being used for the seat pillar or diagonal tube and the rear
ends of the top tubes are grooved in the same manner as above described in
connection with the front tube.
In constructing the bottom bracket the same principle is observed. The lower
end of the seat pillar or diagonal tube passes through a hole in the bottom
bracket, and on each side of this diagonal tube, and through the bottom bracket
above mentioned the holes for the chain stays are provided in such a position
that the tubes have to be grooved so as to allow the diagonal tube to pass through
and lock them in position as above described and also grooved in bottom bracket
above mentioned to allow a tubular liner which is passed through the large
central hole of bottom bracket to form a second lock to chain stays above
mentioned.
The rear ends of the two bottom tubes also pass into holes provided in the
bottom bracket in such a position that they come into contact with the chain
tays which lock them in position owing to these rear ends being similarly

page_text: grooved. The seat pillar or diagonal tube is held in position in the bottom
bracket by a tubular liner which is passed through the large central hole of the
bottom bracket and where this tubular liner comes into contact with the seat
pillar or diagonal tube, the later is grooved to allow it to be locked by the said
tubular liner.
To strengthen all tubes in lugs or holes above described a liner with a hole
or solid as prefared to allow a pin, nut or screw to pull or push the said liner
backwards & forwards as the case may be to make grooves made in the above
tubes smaller and so tighten it to its companion tube.
It is obvious that the top and bottom tubes instead of being made in pairs as
above described can be made single as is usual in cycle frames construction.
When only one tube is used it is necessary for it to be sufficiently large in
diameter to allow the central portion at the ends to be slotted out so as to per-
mit the front tube and also the seat pillar or diagonal tube to slide through for
the purpose of locking them in position.
Dated this 9th day of December 1898.
Improvements in Brazeless Frames suitable for Velocipedes, Motor
Cars and similar purposes.
JOHN JAMES UNDERWOOD, 36, Wheeler Street, Birmingham, Cycle Enameller,
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 this invention is to construct the frames of velocipedes motor
cars or similar purposes in such a method as will obviate the necessity of brazing
the joints together as usually adopted.
In carrying this invention into effect I construct the joints so that the tubes
cross each other at an angle one of the tubes being grooved so as to be locked
by its companion tube in position.
What are generally known as the top and bottom head lugs of cycles are con-
structed with a large central hole through which the front or head tube of the
frame is passed, the lugs being secured into position on the front tube by any
convenient mechanical method, pins or screws being, in some instances used for
this purpose. On each side of the said front tube in the top and bottom lugs,
socket ears are provided which are bored to suit the angle of the frame. In both
of these, side holes belonging to the top lug, there are fitted two tubes which
are prefarably used instead of the one top tube as usually employed, also into the
two holes on the bottom lug are fitted the two tubes which are preferably used
instead of one tube as usual for the bottom bar of frame. In this invention the
two tubes which pass through the socket ears of the top and bottom lugs are
grooved to a radius to suit the diameter of the front tube where they come into
contact with the above mentioned front tube. It will be readily seen when the
tubes are fitted into the socket ears and further locked into position owing to
the grooves through which the front tube is passed, that they cannot be taken
to pieces unless the front tube itself is removed. In building up the frame what
is known as the seat pillar lug is constructed in a similar manner to the top and
bottom lugs above mentioned, the large central hole in this case being used for

page_text: the seat pillar, or diagonal tube and the rear end of the top tubes are grooved in
the same manner as above described in connection with the front tube.
In constructing the bottom bracket the same principle is observed. The lower
end of the seat pillar or diagonal tube passes through a hole in the bottom bracket
and on each side of this diagonal tube and through the bracket above mentioned
the holes for the chain stays are provided in such a position that the tubes have
to be grooved so as to allow the diagonal tube to pass through and lock them in
position as above described and also grooved in bottom bracket above mentioned
to allow a tubular liner which is passed through the large central hole of bottom
bracket to form a second lock to chain stays above mentioned. The rear end
of the two bottom tubes also pass into holes provided in the bottom bracket in
such a position that they come into contact with the chain stays which lock them
The seat pillar
in position owing to these rear ends being similarly grooved.
or diagonal tube is held in position in the bottom bracket by a tubular liner
which is passed through the large central hole of the bracket and where this
tubular liner comes into contact with the seat pillar or diagonal tube the latter
is grooved to allow it to be locked by the said tubular liner.
To strengthen all tubes in lugs or holes above described a liner similarly
grooved as tubes above described with a hole in or solid as prefared to allow a
pin, nut, or screw to pull or push the said liner backwards or forwards as the
case may be to make grooves made in the above tubes smaller and so tighten it
to its companion tube. It is obvious that the top and bottom tubes instead of
being made in pairs as above described can be made single as is usual in cycle
frame construction. When only one tube is used it is necessary for it to be
sufficiently large in diameter to allow the central portion at the ends to be slotted
out so as to permit the front tube and also the seat pillar or diagonal tube to slide
through for the purpose of locking them in position.
The following description of the sheets of drawings Nos. 1 and 2 of the lugs
used with pieces of tubes in, will perhaps make the objects of my above inven-
tion more clear.
Fig 1. Side elevation of bottom bracket also side elevation of the liner for
strengthening the joints as above described.
Fig. 2. Front elevation of bottom bracket looking from the front or head
tube.
Fig. 3. Plan of bottom bracket looking from the rear end of frame.
Fig. 4. Side elevation of the seat pillar or diagonal tube lug.
Fig. 5. Plan of seat pillar or diagonal tube lug.
Fig. 6. Side elevation of the top front or head lug.
Fig. 7. Plan of top and bottom head lugs.
Fig 8. Side elevation of the bottom head lug.
and 2 into the holes O
Fig. 9. Side elevation of frame when built as above described.
Therefore it must readily be seen by fitting the tubes
and P bored out for them and grooved in the manner described above 1, in
Fig. 6, at the one end and m & n, in Fig. 4, at the other end they are locked in
position by the tube 5 being passed through the large central hole R in Fig. 6
on the one end and tube 6 into hole C in Fig. 4 on the other. Then tube 3 and 4
being passed into holes as above described U, T, Fig. 8 at the one end and a, b,
Fig. 1 at the other end are locked in position by tube 5 passing through hole S.
Fig. 8 on the one end and by tubes 7 and 8 passing through the holes a, and e,
Fig. 1 at the other end. The tubes 7 and 8 are locked in position by tube 6
is held in position by the tubular
passing through hole f, Fig. 1. The tube
liner 9 Fig. 1 above described passing through hole g, Fig. 1, it also forms
second lock to tubes 3, 4, 6, 7 and 8.
Thus it must be readily seen that to take any of the tubes out of their respective
5 positions you must first remove the companion tube which forms the lock to
thom

page_text: 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:-
-
1st. The method of constructing velocipedes motor cars, or similar frames with-
out brazing or soldering consisting of tubes intersecting and locking each other
in combination with "lugs" adapted to hold the said tubes in any determined
position substantially as described and illustrated by the accompanying drawings.
2nd. The method of constructing velocipedes motor cars and similar frame
work by means of lugs and tubes intersecting each other with the said lugs in
combination with screw locking liners substantially as described and illustrated
in Fig. 1 h, i, of the accompanying drawings.
Dated this 8th day of September 1899.