Year: 1897

page_text: Date of Application, 25th Mar., 1897
Complete Specification Left, 22nd Dec., 1897-Accepted. 5th Feb., 1898
I, EDMOND PERDRIZET, of Bethoncourt (Dep. du Doubs), in the Republic of France,
Manufacturer, do hereby declare the nature of this invention to be as follows:-
The present invention relates to the construction of cycles and is characterised by
the use of tubes divided longitudinally, the two halves of each tube being connected
with each other and with the other parts of the framing by means of rings, collars or
the like. By the addition of stays (such as solid cylindrical rods) a rigid framing
is secured.
The object of this new construction is to enable the cycle to be taken to pieces and
to be fitted up again in a very simple and ready manner, to diminish the labour of
adjusting the parts and more particularly to avoid any soldering or brazed joints, which
advantage is of utmost importance in the manufacture of frames of cycles, say of
aluminium, which is very difficult to work and to solder.
In one form of the invention the frame consists of two tubes which are longitu-
dinally divided and connected at their ends by stays. The tube extending from the
front to the back is bifurcated towards the rear to receive the back-wheel, and the
end of each branch of the fork so formed is connected to a part secured on
the spindle of the back-wheel by means of nuts or otherwise. The two tubes are
connected by means of a ring or loop surrounding the seat tube and enclosed between
the two forked parts of the other tube, the stem of the loop having a recessed or
reduced portion, so that a ring may strongly compress the tube onto the stem of the
loop. At its upper end the tube extending from front to back is secured to a
shoulder or lug on a part carrying the front fork by means of a pin which passes
through both halves of the tube and the lug whilst over the whole a clamping ring is
slipped. The fitting of the seat tube on the crank-shaft bracket is effected in the
same manner as just described. At its upper end the tube is provided with hooks or
lugs against which rests a ring or collar which is provided with links or projections
through which are passed the rods constituting the stays connecting, on one hand,
the tube to the part on the spindle of the rear-wheel, and on the other hand, to the
front of the framing.
The front-fork is also constituted by a divided tube connected by collars, each of
said collars being provided with two lugs or ears through the front pair of which
passes the brake-rod and through the back pair a rod which also passes through two
holes in the part attached to the tube extending to the rear wheel. This rod thus
connects the front wheel to the back parts of the machine, the front part being
capable of turning about said rod.
The four stays are preferably double and may be passed through holes in the rings
or collars on the seat tube where they are bent and their ends fixed by means of
nuts on the connections at the ends of the other tube.
This arrangement enables the different parts of the cycle to be put together in a
very simple and rapid manner. It is only necessary to unscrew the four stay rods, to
slip down the movable collars and to remove the front pin, when the front fork will
become separated from the rest of the framing. The same operation is effected for

page_text: the seat tube as for the other tube and then all the different parts of the cycle wil
be separated. The reconstruction of the machine is extremely easy and there is no
necessity for soldering or brazing..
I, EDMOND PERDRIZET, of Bethoncourt (Dep. du Doubs), in the Republic of France,
Manufacturer, 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 present invention relates to the construction of cycles and is characterised by
the use of tubes divided longitudinally, the two halves of each tube being connected
with each other and with the other parts of the framing by means of rings, collars
or the like. By the addition of stays such as solid cylindrical rods a rigid framing
is secured.
The object of this new construction is to enable the cycle to be taken to pieces and
to be fitted up again in a very simple and ready manner, to diminish the labour of
adjusting the parts and more particularly to avoid any soldering or brazed joints,
which advantage is of utmost importance in the manufacture of cycles or frames of
cycles, say of aluminium', which is very difficult to work and to solder.
In the accompanying drawing
Figure 1 shows a bicycle frame constructed according to this invention.
Figure 2 is a plan of the tube A B in section.
Figure 3 is a section of the tube P.
Figures 4 and 5 are sections of the tube C D.
Figure 6 shows the attachment of the stays oo of the tube C D with the end of
the tube A B on the spindle of the back-wheel.
As can be seen from Figure 1 the frane consists of two tubes A B, C D which are
longitudinally divided and connected at their ends by stays o. The tube A B
extending from the front to back is bifurcated towards the rear to receive the back-
wheel, and the end of each branch of the fork so formed is connected to a part E
secured on the spindle of the back-wheel by means of nuts or otherwise Figure 6.
The two tubes A B C D are connected by means of a ring or loop F surrounding the
seat tube CD and enclosed between the two forked parts of the other tube A B the
stem of the loop F having a recessed or reduced portion, so that a ring G may
strongly compress the tube A B on to the stem of the loop F. At its upper end A
the tube A B extending from front to back is secured to a shoulder or lug K on a
part H (Figure 2) carrying the front fork by means of a pin L which passes through
both halves of the tube and the lug K whilst over the whole a clamping ring M is
slipped. The fitting of the seat tube CD on the crank-shaft bracket is effected in
the same manner as just described (see Figure 4). At its upper end 'D the tube CD
is provided with hooks or lugs against which rests a ring or collar N which is
provided with two links or projections through which are passed the rods O
constituting the stays connecting, on one hand, the tube C D to the part E on
the spindle of the rear wheel, and on the other hand, to the front of the
framing.

page_text: The front-fork is also constituted by a divided tube P connected by collars R and S
each of said collars being provided with two lugs or ears through the front pair of
which passes, the brake-rod, and through the back pair, a rod T which also passes
through two holes in the part H attached to the tube extending to the rear wheel.
This rod T thus connects the front wheel to the back parts of the machine, the front
part being capable of turning about said rod T.
The four stays O are preferably double, and may be passed through holes in the
rings or collars N N¹ on the seat tube where they are bent and their ends fixed by
means of nuts on the parts E and H.
This arrangement enables the different parts of the cycle to be put together in a
very simple and rapid manner. It is only necessary to unscrew the four stay rods O
to slip down the movable collars M and G and to remove the front pin L when the
front fork will become separated from the rest of the framing. The same operation
is effected for the seat tube C D as for the other tube A B and then all the different
part of the cycle will be separated. The reconstruction of the machine is extremely
easy and there is no necessity for soldering or brazing.
Having now particularly described and ascertained the nature of my said
invention and in what mauner the same is to be performed, I declare that
what I claim is :-
1. A cycle frame that may be taken to pieces and without soldered joints
characterised by the use of longitudinally divided tubes the two halves being
connected to each other and to the other parts of the cycle by collar or rings in
combination with stays formed of solid cylindrical or other shaped rods connecting
the ends of the tubes to form the frame substantially as described.
2. A cycle frame constituted by two longitudinally divided tubes arranged in the
form of an inclined cross, one tube being forked to receive the rear wheel and
attached to the front wheel fork connections at the other end, the other tube carrying
the seat and bottom bracket at its ends and passing through and connected to the
fork of the other tube the ends of the tubes or their connections being connected by
rods or stays, substantially as described.
3. A front fork for cycles consisting of a longitudinally divided tube the upper
parts of which are connected together by sockets, the lower parts being opened out
to form the fork for receiving the front wheel, substantially as described.
4. The combination and arrangement of parts constituting the complete cycle
framing substantially as described and illustrated in the accompanying drawings.
Dated this 20th day of December 1897.
BOULT & WADE,
Agents for the Applicant.