Improvements in or relating to Brazeless Joints for Velocipede Frames and other Structures.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in or relating to Brazeless Joints for Velocipede
Frames and other Structures.
I, GEORGE PILKINGTON, of Earlsdon Cycle Works, Earlsdon, Coventry, War-
wickshire, Manager, do hereby declare the nature of this invention to be as
follows:-
My invention relates to brazeless joints for velocipede frames and other struc-
tures consisting of tubes or rods united by lugs.
In constructing a joint according to my invention I bore the back portion of the
lug preferably parallel and a close sliding fit for the end of the tube or rod. I
make the mouth of the lug taper, expanding outwards, and tap it with a suitable
screw thread. At a suitable distance from the extremity of the tube or rod I
prefer to provide an external collar, though this is not absolutely essential. In
the case of a tube the collar may be raised from the body thereof by an expander.
On to the tube behind the collar (if any) I slide a parallel bored split sleeve.
The said sleeve is tapered and screw threaded on one end of the exterior, which
is thereby adapted to engage with the tapped mouth of the lug. The sleeve is
provided with flats or other means whereby it may be gripped and rotated.
To secure the parts together, the end of the tube or rod is thrust into the lug
The
and the taper end of the sleeve entered in the taper mouth of the lug.
sleeve is then screwed in, and the tapering of the parts causes the sleeve to con-
tract more and more firmly on the tube or rod and to react more and more
firmly outwards against the lug. If the tube or rod be provided with a collar,
the end of the sleeve bears against the said collar and carries the tube or rod
inwards as it (the said sleeve) is screwed into the lug.
A rivet or screw peg passing through the lug into the tube or rod, or other
means may be employed to prevent temporarily or otherwise; the rod or tube
rotating in the lug. When light tubes are employed I prefer to support them by
plugs or liners inserted in the ends. The mouth of the lug may be strengthened
by an external band or rib.
1000
G. DOUGLAS LEECHMAN,
18, Hertford Street, Coventry,
75, Chancery Lane, London, W.C., and
9, Exchange Chambers, New Street, Birmingham,
Patent Agent for the Applicant.

page_text: Improvements in or relating to Brazeless Joints for Velocipede
Frames and other Structures.
I, GEORGE PILKINGTON, of Earlsdon Cycle Works, Earlsdon, Coventry, War-
wickshire, Manager, 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;-
My invention relates to brazeless joints for velocipede frames and other struc-
tures consisting of tubes or rods united by lugs.
In the accompanying drawings,
Fig. I is a plan of the parts comprised in one form of joint constructed accord-
ing to my invention and Fig. II is a vertical longitudinal section of the said
parts in place.
Figs. III and IV are similar views of a modified joint.
Like numerals refer to like parts in all the figures."
In constructing a joint according to my invention as illustrated by
Figs. I and II, I bore the back portion 2 of the lug 3 preferably parallel and a
close sliding fit for the end of the tube 4. I make the mouth 5 of the lug taper,
expanding outwards, and tap it with a suitable screw thread. On to the tube I
slide a parallel bored split sleeve 6. The said sleeve is tapered and screw threaded
on one end (7) of the exterior, and is thereby adapted to engage with the tapped
mouth 5 of the lug. The sleeve is provided with flats 12 or other suitable means
whereby it may be gripped and rotated.
To secure the parts together, the end of the tube 4 is thrust into the lug 3
and the taper end 7 of the sleeve 6 entered into the taper mouth of the lug.
The sleeve is then screwed in and the tapering of the parts causes the sleeve to
contract more and more firmly on to the tube and to react more and more firmly
outwards against the lug.
means.
In the modified construction illustrated by Figs. III and IV the tube 4 is
provided with a collar 8. This collar may be raised from the body of the tube
by an expander; or may be formed thereon or attached thereto by any suitable
The sleeve Gis placed on the tube 4 behind the collar 8 so that the end
of the sleeve bears against the said collar 6 and carries the tube 4 inwards as it
(the said sleeve) is screwed into the lug. If there be a collar on each end of
the tube, it is usually more convenient to fit the sleeves 6 in place before forming
or attaching the collars.
A rivet or screw peg 9 passing through the lug 3 into the tube 4, or other
means may be employed to prevent, temporarily or otherwise, the tube rotating
in the lug.
It will be apparent that the invention is equally applicable to solid rods as
to tubes. Collars may be formed on or attached to such rods by forging, machin-
ing, rivetting or any other suitable means. When light tubes are employed I
prefer to support them by plugs or liners 10 inserted in the ends. The mouth
of the lug may be strengthened by an external band or rib 11 as shown.
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. In a velocipede frame or other structure consisting of tubes or rods united
by lugs, constructing one or more of the joints by forming the mouth of the lug
taper, expanding outwards; tapping the mouth of the said lug; providing the

page_text: tube or rod with a free, parallel bored, split sleeve, having one end suitably
tapered and screw threaded; inserting the end of the tube or rod in the lug, and
screwing the said split sleeve into the mouth of the lug, substantially as set forth.
2. In a velocipede frame or other structure consisting of tubes or rods united
by lugs, constructing one or more of the joints by forming the mouth of the lug
taper, expanding outwards; tapping the mouth of the said lug; providing the
tube or rod with a collar, and with a free, parallel bored, split sleeve having one
end suitably tapered and screw threaded and adapted to bear against the back
of the said collar; inserting the end of the tube or rod in the lug, and screwing
the said split sleeve into the mouth of the lug, substantially as set forth.
3. In a joint of the kind referred to in the preceding claiming clauses the
employment of a rivet, screw peg, or the like to prevent the tube or rod rotating
in the lug, substantially as set forth.
4. In a velocipede frame or other structure consisting of tubes or rods united
by lugs, the combination of,-a lug having a tapered and tapped mouth, a split
sleeve having one end exteriorly tapered and screw threaded, and a tube or rod
provided or not provided with an external collar, all constructed, arranged and
adapted to operate substantially as and for the purpose set forth.
5. A brazeless joint for velocipede frames and other structures consisting of
tubes or rods united by lugs, constructed substantially as herein described with
reference to Figs. I and II of the accompanying drawings.
6. A brazeless joint for velocipede frames and other structures consisting of
tubes or rods united by lugs, constructed substantially as herein described with
reference to Figs. III and IV of the accompanying drawings.
Dated this 2ord day of May 1898.
G. DOUGLAS LEECHMAN,
18, Hertford Street, Coventry,
75, Chancery Lane, London, W.C., and
9, Exchange Chambers, New Street, Birmingham,
Patent Agent for the Applicant.