Improvements in Riveting Apparatus.
Year: 1899

page_text: Improvements in Riveting Apparatus.
I, JAMES MACEWAN Ross, of the Firm of R. G. Ross and Son, Engineers, Green-
head Works, Glasgow, in the County of Lanark, do hereby declare the nature of
this invention to be as follows:-
This invention relates to riveting apparatus in which the riveting tool is
guided around a central fixed point and it has for its object to provide simple and
improved means for carrying the riveter and for feeding it to operate on the work.
The frame which is commonly provided for carrying or holding up the work
has attached to it a dome-shaped guide in the form of a segment of a hollow
sphere having its centre at the point around which the tool is intended to operate
on the rivet, the said guide being formed preferably by plates having between
them a
guide way or space wherein is fitted to move freely around the centre a
domed or correspondingly shaped guide piece having a central screw-threaded
boss or eye whereinto is screwed the tool holding end of the riveter. The riveter
is preferably of the class described in the Specification of my Patent No. 16355
of 1892, which operates by percussive action but it may consist of a miniature
steam hammer secured to the movable part of the domed guide, so that the hammer
or riveting tool is directed towards the centre of the rivet. The riveter is thus
arranged to strike the rivet centrally in order to stave up its end and by striking
a rapid succession of blows around the central point to form a head upon the
rivet which is of uniform shape.
The feeding forward of the tool as the work proceeds is effected either by turn-
ing the tool holder within the screw-threaded boss of the guide, or by turning a
hand wheel formed or fitted on the guide which serves as a nut upon the tool
holder. Or the riveter or the dome to which it is fitted may be constructed with
a pneumatic feeding arrangement such as is described in the Specification of my
Patent No. 6105 of 1894. In this latter case a helical or other spring may be
interposed between the riveter and the dome to keep the machine away from the
work when the tool is not working.
Air or other fluid is admitted to operate the riveter preferably through a handle
fitted to the end of the machine and which may also form an admission valve.
In order to lessen the lateral or circular movement of the riveter the tool may
be made with a concave acting face.
Tated thin 90th dow of At 1900

page_text: I, JAMES MACEWAN Ross, of the Firm of R. G. Ross and Son, Engineers, Green-
head Works, Glasgow, in the County of Lanark, 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 relates to riveting apparatus in which the riveting tool is guided
around a central fixed point and it has for its object to provide simple and improved
means for carrying the riveter and for feeding it to operate on the work.
The invention is illustrated by the accompanying drawings, Fig. 1 being a
longitudinal vertical section of the riveting apparatus in which a riveter operat-
ing by percussive action is employed, and Fig. 2 an end view of the hollow seg-
mental sphere in which the forward end of the riveter cylinder is guided. Fig. 3
is an elevation and Fig. + an end view of the riveting apparatus, in which the
riveter consists of a miniature steam hammer, the apparatus being shown in posi-
tion at work upon a stay of the fire box of a locomotive. Fig. 5 is a detail view
hereinafter referred to.
The frame A, shewn at Fig. 3, which is commonly provided for carrying or
holding the tool up to the work has attached to it a dome-shaped guide B in the
form of a segment of a hollow sphere having its centre at the point around which
the tool C of the riveter, shewn at Figs. 1 and 2, is intended to operate on the
rivet, the said guide B being formed preferably by plates having between them
a guide way or space B wherein is fitted to move freely around the centre with-
out the use of guide bolts, a domed or correspondingly shaped movable guide
pie e E, which may have a central screw-threaded boss or eye, as shewn at Fig. 5.
wl reinto is screwed the tool holding end of the riveter cylinder 1); or said
movable guide piece E may be formed integral with the cylinder, as shewn at
Figs. 1 and 3.
The riveter is preferably, as shewn at Fig. 1, of the class described in the
Specification of my Patent No. 16355 of 1892, which operates by percussive action
but it may consist of a miniature steam hammer G, as shewn at Fig. 3, secured to
or formed integral with the movable part E of the domed guide, so that the ham-
mer, or riveting tool C, is directed towards the centre of the rivet. The riveter
is thus arranged to strike the rivet centrally in order to stave up its end and by
striking a rapid succession of blows around the central point to form a head upon
the rivet which is of uniform shape.
The feeding forward of the tool C as the work proceeds is effected either by
turning the tool holding end of the cylinder D) within the screw-threaded boss
of the guide E, as shewn at Fig. 5, or by turning a hand wheel H formed or fitted
on the boss of the guide E, as shewn in dotted lines on Fig. 5, to feed the riveter
and tool forward, or by turning a screwed sleeve fitted in the boss of the
guide E, said sleeve serving as a nut upon the tool holder C. Or the riveter or
the dome to which it is fitted may, as in the example shewn at Fig. 1, be con-
structed with a pneumatic feeding arrangement such as is described in the
Specification of my Patent No. 6105 of 1894, the admitted air acting constantly
behind the inner cylinder D' to keep it up to its work, and the air entering the
liner acting upon the piston D³ periodically. In this latter case a helical or
other spring may be interposed between the riveter and the dome, or between the
tool holder on the outer cylinder D', to keep the machine or the tool holder away
from the work when the tool is not working.

page_text: Air or other fluid is admitted to operate the riveter preferably through a handle
fitted to the end of the machine and which may also form an admission valve.
In order to lessen the lateral or circular movement of the riveter, the tool may
be made, as shewn at Fig. 3, with a concave acting face.
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―
1. Improved riveting apparatus, the parts of which are constructed combined
and arranged to be operated, substantially as described.
2. The combination with a percussive riveter, of a movable domed guide com-
posed of a segment of a sphere formed integral with or threaded upon the tool
holding end of the riveter cylinder, and a similarly shaped guide way in which
the guide is adapted to move, this latter guideway being secured upon the usual
stationary frame for holding the tool up to its work, substantially as described.
3. In riveting apparatus of the kind set forth, the improved means described
under several modifications for feeding forward the tool.
Dated this 28th day of V 1000
WALLACE FAIRWEATHER,
Of the Firm of Cruikshank & Fairweather,
Chartered Patent Agents,
62, Saint Vincent Street, Glasgow, Agent for the Applicant.