An Improved Joint.
Year: 1889

page_text: Date of Application, 6th Mar., 1889
Complete Specification Left, 17th Sept., 1889-Accepted, 25th Jan., 1890
PROVISIONAL SPECIFICATION.
An Improved Joint.
We GEORGE JOHN DUVAL of 29 Denbigh Street, Bordesley Green Birmingham,
Brass Founder's pattern maker and TOM HOLLAND LAWTON Brighton Villas, Victoria
Road Small Heath Birmingham, Managing clerk, both in the County of Warwick do
hereby declare the nature of this invention to be as follows :-
This invention consists in an improved method of making joints suitable for use
in connecting together metal rods and tubes and also suitable for use in the make
up of all kinds of articles where a joint is utilized.
We make our improved joint in the following manner
We pierce or cut out a blank of suitable configuration to form one half of the joint
we next by suitable tools bend over the blank in such a manner as to fold two
radial faces or flanges parallel to each other these faces or flanges are pierced
transversely with holes coincident with each other the remaining part of the blank
is folded into any convenient shape to pass inside a tube or over a tube or rod which
tube or rod may be of any desired transverse section the shank end may in some
cases be folded in such a manner as to form a flange at any desired angle with the
axis of the holes pierced through the cheeks.
The blank folded in the manner herein before described will hereinafter be referred
to as the half joint.
We provide two folded half joints the faces of the first half joint would be compressed
together untill the transverse measurement from the outside of one face of such half
joint to the outside of the other face of such half joint would equal the inside
measurement between the inside faces of the second half joint.
It will now be readily understood that the first half-joint can be sliden into or
between the second half-joint.
We provide a washer or short length of tube-forming a stretcher washer-the
stretcher washer is placed between the internal faces of the first half joint and is
made of such length as to press the outer faces of the first half joint evenly against
the faces of the second half joint.
We next provide an axial tube the external diameter of which will correspond with
the transverse holes pierced through each cheek of each half joint the length of the
axial tube will be equal to the distance across or through the two half joints placed
together in position as herein before described we thread the axial tube through one
outside cheek of the second half joint thence through the cheek of the first half
joint thence through the stretcher washer thence through the other cheek of first
half joint and out at the second cheek of the second half joint the axial tube so
threaded or introduced would be expanded slightly on both outer ends so as to prevent
the axial tube from moving.
We have now described the method of making our improved joint the piercing,
folding, and compressing will be done by suitable tools in conjunction with suitable
stamps or presses.
Our improved joint so made is a complete article in itself and can be connected to
and utilized with all kinds of articles where a joint is required each shank end of
the joint can be connected where required by suitable mechanical means.
Dated this 5th day of March 1889.
ALFRED WILLIAM TURNER,
Cobden Buildings, Corporation Street, Birmingham, Agent for the Applicants.

page_text: COMPLETE
SPECIFICATION.
An Improved Joint.
We GEORGE JOHN DUVAL of 39 Denbigh Street, Bordesley Green Birmingham,
Brass Founder's Pattern Maker and Tom HOLLAND LAWTON, Brighton Villas,
Victoria Road, Small Heath Birmingham, Managing clerk, both in the County of
Warwick 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 consists in an improved method of making joints suitable for use
in connecting together metal rods and tubes and also suitable for use in the make up
of all kinds of aricles where a joint is utilized.
We make our improved joint in the following manner.
We pierce or cut out a blank of suitable configuration to form one half of the
joint we next by suitable tools bend over the blank in such a manner as to fold two
radial faces or flanges parallel to each other these faces or flanges are pierced
transversely with holes coincident with each other the remaining part of the blank
is folded into any convenient shape to pass inside a tube or over a tube or rod which
tube or rod may be of any desired transverse section the shank end may in some
cases be folded in such a manner as to form a flange at one desired angle with the
axis of the holes pierced through the cheeks.
The blank folded in the manner herein before described will hereinafter be referred
to as the half joint.
We provide two folded half joints the faces of the first half joint would be com-
pressed together until the transverse measurement from the outside of one face of such
half joint to the outside of the other face of such half joint would equal the inside
measurement between the inside faces of the second half joint.
It will now be readily understood that the first half joint can be sliden into or
between the second half joint.
We provide a washer or short length of tube forming a stretcher washer the
stretcher washer is placed between the internal faces of the first half joint & is made
of such length as to press the outer faces of the first half joint evenly against the
faces of the second half joint.
We next provide an axial tube the external diameter of which will correspond with
the transverse holes pierced through each cheeks of each half joint the length of the
axial tubo will be equal to the distance across through the two half joints placed
together in position as herein before described we thread the axial tube through one
outside cheek of the second half joint thence through the cheek of the first half
joint thence through the stretcher washer thence through the other cheek of first half
joint and out at the second cheek of the second half joint the axial tube so threaded
or introduced would be expanded slightly on both outer ends so as to prevent the
axial tube from moving.
We have now described the method of making our improved joint the piercing
folding and compressing will be done by suitable tools in conjunction with suitable
stamps or presses.
Our improved joint so made is a complete article in itself and can be connected to,
and utilized will all kinds of articles where a joint is required each shank end of the
joint can be connected where required by suitable mechanical means.
We will now proceed to describe with reference to the accompanying drawings
the manner in which our invention is constructed and used.
Figure 1 represents a side elevation of our improved joint.
Figure 2 represents a plan of Figure 1 viewed from the under side.
Fig. 3 represents the left hand half of the joint.
Fig. 4 represents the right hand half of the joint.
Fig. 5 represents the stretcher washer and axial tube.
In carrying out our invention we provide a sheet metal blank of suitable thickness

page_text: and then by means of suitable tools form the blank into the half joint represented
at Figure 3 the cheeks of this half joint are compressed near each other in the
manner represented at a a¹ Figure 2.
We next provide a second half joint as represented at Figure 4 the cheeks b b of
the second half joint bear (on their internal faces) against the outer faces of the
cheeks a a of first half joint as represented at Figure 2.
We next provide a stretcher-washer and place it between the internal faces of the
first half joint as represented at Figure 2 transverse holes d are pierced through the
four cheeks of the joint, the internal diameter of the stretcher-washer c corresponding
with holes d.
We next provide a solid axial pin, or its equivalent the axial tube e the external
diameter of the axial pin or axial tube corresponds with the internal diameter of the
holes d formed in the cheeks of the half joints. We thread the axial pin or axial tube
through the cheeks of each half joint and also through the stretcher washer, we then
slightly expand the outer ends of the axial tube at f and thus complete the joint,
when using a solid axial pin we should provide a headed pin and expand or rivet the
shank end of such pin.
We have now described the method of making our improved joint.
Our improved joint so made is a complete article in itself and can be connected
to, and utilized with, all kinds of articles where a joint is required each shank end g
of the joint can be connected by suitable mechanical means to rods or tubes forming
parts of the article to which it is intended to attach our improved joint or the blank
may be made of such dimensions as to form beyond the joint any required part of
any article; with the distinct understanding that our invention consists in the joint
and not in the article attached to or projecting beyond the joint.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed I declare that what
we claim is
1st. The making of a joint in the manner illustrated and described.
2nd. The using of joints made in the manner illustrated and described.
ALFRED WILLIAM TURNER,
Cobden Buildings, Corporation Street, Birmingham, Agent for the Applicants.