Combined Rivet Making and Rivetting Machine or Accessory Tool to Enable Ordinary Rivetting Machines to Form the Rivet and Complete the Rivetting by the same Continuous Operation.
Year: 1888

page_text: Date of Application, 10th Dec., 1888
Complete Specification Left, 10th Sept., 1889-Accepted, 12th Oct.. 1839
PROVISIONAL SPECIFICATION.
Combined Rivet Making and Rivetting Machine or Accessory Tool
to Enable Ordinary Rivetting Machines to Form the Rivet and
Complete the Rivetting by the same Continuous Operation.
We JOSEPH TOWARD ELTRINGHAM, Iron Ship and Boiler Builder, and WILLIAM
KEEN, Boiler Works Manager, both of South Shields, in the County of Durham do
hereby declare the nature of this invention to be as follows :-
According to this invention the rivet is formed from a plain piece of the material to
be used as the rivet, of the required diameter and length, (inserted through the plates
to be rivetted) the first operation forming a head on the one end of the rivet and the
second and continuous operation closing the joint forming a head on the other end of
the rivet, and completing the operation of rivetting.
The "holding-up" tool has formed with, or fitted to it, a hydraulic, compressed air
or steam cylinder and ram, preferably of annular form, or a metallic or other elastic
spring (or springs) or a spring (or springs) and lever, which will oppose sufficient
resistance to cause the plain piece of the material used for the rivet to be squeezed
and set out to form a head on the rivet at one end, which is done by the first move-
ment of the moving "die "the "cup" in which forms the head of the rivet. The
pressure of the hydraulic compressed air or steam cylinder may be transmitted
through an intervening lever the cylinder being carried upon the pillar of the holding
up tool and this arrangement will in some cases, especially in existing rivetting
machines, be found preferable.
The further and continuous movement of the machine, overcoming the resistance
offered to the first movement by the water, air, steam. metallic or other elastic spring
(or springs) or spring (or springs) and lever forces the rivet, with the plates to be
rivetted, against the end of the "holding-up" tool, the "cup"
in which squeezes up
and forms the head on the other end of the rivet, and completes the operation of
rivetting.
33
The moving "die now being drawn back, the resisting force of water, air, steam,
metallic or other elastic spring (or springs), or spring (or springs) and lever, forces
back the plates into position for receiving and heading the next rivet.
Provision is made by washers placed behind the cup of the "holding-up" tool, or
rings round the ram of cylinder, or by different lengths of springs or springs or by
other means, so that the plain pieces of material to be used as the rivet inay be made
equidistant on either side of the plates to be rivetted, and allow for varying thicknesses
of plates and lengths of plain pieces of material used as the rivet.
According to this invention, the plain pieces of material to be used as the rivets, of
the required diameters, may be cut to the exact lengths required for varying.
thicknesses of plates, the rivet formed, and the rivetting completed by what is
practically one movement of the machine, performing two operations, one immediately
succeeding the other, and in the same period of time as is now required for rivetting
only.
We consider that hydraulic pressure will generally be preferable for the resisting
force, in forming the rivet head, which will be the accumulator pressure acting upon
an area of ram sufficient to form the head on a rivet of the largest size likely to be
required.
Dated this 10th
Danmhan 1000
J. T. ELTRINGHAM,
Per L. W.
WM. KEEN,
Per L. W.

page_text: COMPLETE SPECIFICATION.
Combined Rivet Making and Rivetting Machine or Accessory Tool
to Enable Ordinary Rivetting Machines to Form the Rivet and
Complete the Rivetting by the same Continuous Operation.
We, JOSEPH TOWARD ELTRINGHAM, Iron Ship and Boiler Builder, and WILLIAM
KEEN, Boiler Works Manager, both of South Shields in the County of Durham, do
hereby declare the nature of said invention and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement :-
According to this invention the rivet is formed from a plain piece of the material to
be used as the rivet, of the required diameter and length, (inserted through the plates
to be rivetted); the first part of the operation forming a head on the one end of the
rivet and the second part of the same continuous operation closing the joint forming a
head on the other end of the rivet, and completing the operation of rivetting.
The "holding-up" tool has forined with, or fitted to it, a hydraulic, compressed air
or steam cylinder and ram, preferably of annular form, or a metallic or other elastic
spring (or springs) or a spring (or springs) and lever, which will oppose sufficient
resistance to cause the plain piece of the material used for the rivet to be squeezed
and set out to form a head on the rivet at one end, which is done by the first move-
ment of the moving "die
the "
cup in which forms the head of the rivet. The
pressure of the hydraulic compressed air or steam cylinder may be transmitted through
an intervening lever the cylinder being carried upon the pillar of the holding up tool
and this arrangement will in some cases, especially in existing rivetting machines, be
found preferable.
وو
27
The further and continuous movement of the machine, overcoming the resistance
offered to the first movement by the water, air, steam, metallic or other elastic spring
(or springs) or spring (or springs) and lever, forces the rivet, with the plates to be
rivetted, against the end of the bolding-up" tool the "cup" in which squeezes up
and forms the head on the other end of the rivet, and completes the operation of
rivetting.
܂
The moving "die" now being drawn back, the resisting force of water, air, steam,
metallic or other elastic spring (or springs) acting direct or spring (or springs) acting
through a lever, forces back the plates into position for receiving and heading the next
rivet.
Provision is made by washers placed behind the cup of the "holding-up" tool, or
rings round the ram of cylinder, or by different lengths of spring or springs or by
other means, so that the plain pieces of material to be used for the rivet may be made
equidistant on either side of the plates to be rivetted, and allow for varying thicknesses
of plates and lengths of plain pieces of material used as the rivet.
According to this invention, the plain pieces of material to be used as the rivets, of
the required diameters, having been cut to the exact lengths required for varying
thicknesses of plates, the rivet is formed, and the rivetting completed by what is
practically one movement of the machine, performing two operations, one immediately
succeeding the other, and in the same period of time as is now required for rivetting
only.
We consider that hydraulic pressure will be preferable for the resisting force, in
forming the rivet head, which will be the accumulator pressure acting upon an area
of ram sufficient to oppose the requisite resistance to form the head on a rivet of the
largest size likely to be required.

page_text: to give the resistance necessary to form the head of the rivet by the first operation
but the pressure of steam, compressed air or gas or the resistance of springs may in
some cases be applied.
On sheet 1, Fig. 1 shews the machine having completed the first part of the
operation of forming the head on a rivet and on sheet 2, Fig. 2 shews the completion
of the second part of the operation of closing the rivet.
A is the main pillar of the rivetting machine, carrying the moving die B, and C is
the other pillar which carries the fixed die D around the outer end of which is the eye
of a lever E having its fulcrum at a point low down on the pillar ((not shewn on
drawings). F is a hydraulic cylinder bolted to the pillar Cfitted with a scrowed
cover G through which works the ram H packed with cupped leathers in the cylinder
and having its outer end abutting against the lever E. Water under pressure is
admitted to the cylinder by the pipe J to act upon the area of the ram H giving the
resistance necessary to form the head on the rivet "blank" by the moving die B, the
other end of the rivet blank resting in the cup of the fixed die D. The rivet head
being formed the further continuous movement of the moving die, overcoming the
resistance of the ram, forces the lever E back upon the fixed die D and the further
movement of the moving die completes the operation of closing the rivet the eye of
the lever continuing to press the plates together until the rivet is finally closed as
shewn by Fig. 2 sheet 2. The moving die being withdrawn the pressure behind the
ram forces the lever into position for the next rivet blank being inserted, the plates
having been adjusted, and the operations are repeated.
Adjustment may be provided for varying thicknesses of plates and lengths of rivet
blanks, by thickness washers W inserted either between the pillar C and the fixed
die D or in the annular space between the ran and the cylinder or between the face of
the ram and the lever, as indicated.
**
On sheet 3, Fig. 1 shews the machine fitted with an annular cylinder F formed upon
the outer end of a bolt K through the pillar C the centre part of the cylinder carrying the
fixed die and the annular portion of the trunk ram H packed with U leathers, and
working through the cylinder cover G. The operation of forming the head on the
rivet blank," as shewn on this figure just completed, and the further continuous
operation of closing up the rivet, as shewn on sheet 4 Fig. 2, are precisely the same
as previously described with reference to the lever machine. Adjustment may be
provided by thickness washers W inserted behind the fixed die D or in other suitable
position.
It will be seen that the lever arrangement of our invention shewn on Figs. 1 and 2
(sheets 1 and 2) can be readily adapted to existing rivetting machines and is also
specially applicable to rivetting the seams of modern high pressure steam boilers in
which the rivets are pitched with small spaces between as the eye of the lever keeps
clear of the rivet already closed.
The direct acting arrangement shewn on Figs. 1 and 2 (Sheets 3 and 4) is more
suitable for rivetting machines which are to be constructed, and especially for those
intended for rivets widely spaced, as in girder and similar work, where the pitch of
the rivets allows of the space required by the trunk ram working out of the annular
cylinder.
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:-
1st. In rivetting machines forming the rivet from a "blank" length of the material
and completing the rivetting by one continuous operation the first part of the operation
forining the head on the rivet and the second part of the same continuous operation
closing the rivet.
2nd. The application to rivetting machines of an accessory tool to enable ordinary
rivetting machines to form the rivet and complete the rivetting by one continuous
operation.

page_text: 3rd. The combined rivet making and rivetting machine comprising the various parts
arranged and operating direct as shewn by Figs. 1 and 2 Sheets 1 and 2 and operating
through a lever as shewn by Figs. 1 and 2 Sheets 3 and 4.
Dotad this 10th day of Sentember 1889
T. J. DANSON,
Per F. J. B.