IMPROVEMENTS IN APPARATUS
Year: 1882

page_text: LETTERS PATENT to John Fielding of the Atlas Works in the City of
Gloucester Engineer for an invention of "IMPROVEMENTS IN APPARATUS for
PROVISIONAL SPECIFICATION left by the said John Fielding at the Office
of the Commissioners of Patents on the 25th March 1882.
ss
JOHN FIELDING of the Atlas Works in the City of Gloucester Engineer
IMPROVEMENTS IN APPARATUS FOR SUSPENDING PORTABLE MACHINES FOR
PUNCHING, RIVETTING AND SUCH LIKE OPERATIONS"
My invention relates to apparatus for suspending portable machines employed
for punching rivetting and such like operations, the object which I have in view
being to obtain in a simple manner facilities for applying the tools of such machines
at various points and in various directions according to the work that they have
to perform. For this purpose, I fit on a trunnion on either side of the machine at
or near the centre of gravity a sleeve within which the trunnion can revolve, and
to the sleeve I joint by two parallel links like those of a parallel ruler, a bar pro-
jecting beyond the links a distance such that its end is nearly above the centre of
gravity of the machine. The machine being suspended by a swivel attached to
the end of this bar can be turned into various attitudes so that its tools can be
presented at any required point and in any required direction within the limits
permitted by the jointing. In cases where the machine is worked by hydraulic or
other fluid pressure, the fluid can be supplied through the trunnion, being conducted
thither along the bar and either of the links which may for that purpose be made
tubular.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Fielding in the Great Seal Patent Office on the
13th September 1882.
JOHN FIELDING of the Atlas Works in the City of Gloucester Engineer
IMPROVEMENTS IN APPARATUS FOR SUSPENDING PORTABLE MACHINES
PUNCHING, RIVETTING AND SUCH LIKE OPERATIONS
FOR
My invention relates to apparatus for suspending portable machines employed
for punching rivetting and such like operations, the object which I have in view
being to obtain in a simple manner facilities for applying the tools of such machines
at various points and in various directions according to the work that they have
to perform. For this purpose I fit on a trunnion on either side of the machine at
or near the centre of gravity a sleeve within which the trunnion can revolve, and
to the sleeve I joint by two parallel links like those of a parallel ruler, a bar
projecting beyond the links a distance such that its end is nearly above the centre
of gravity of the machine. The machine being suspended by a swivel attached to
the end of this bar can be turned into various attitudes so that its tools can be
presented at any required point and in any required direction within the limits
permitted by the jointing. In cases where the machine is worked by hydraulic or
other fluid pressure, the fluid can be supplied through the trunnion being conducted
thither along the bar and either of the links which may for that purpose be made
hulon
Fig 1 is a side view of a hydraulic punching or rivetting bear suspended
according to my invention. A trunnion A formed on the back of the frame nearly
in the line of the centre of gravity, is embraced by a sleeve B within which the
• trunnion is free to turn. The sleeve B is connected by two links CC (like those
of a parallel ruler) to a beam D, having at its end the suspension link E nearly in
the line of the centre of gravity. F is the valve box, and G part of the discharge
pipe and H part of the supply pipe for the working fluid. The dotted lines in
the figure indicate the extreme position to which the bear can be turned in the
plane of the figure. It can also be turned in any direction round the axis of the
trunnion A. Fig 2 shews another form of punching or rivetting machine with
the trunnion arranged at one side. The parts in this figure corresponding with
those in Fig 1 are marked by similar letters of reference. Fig 3 is a back view
of another form of machine having the pipe H for supplying the working fluid
following the course of the jointed links as shewn in the part front view Fig 4.
The passage from the pipe H to and through the trunnion A is shewn to an
enlarged scale at Fig 5, the trunnion being in this case an axis passing through
the body of the machine. The pipe H is connected to the beam D by joints h one
of which is shewn to an enlarged scale at Fig 6. In order to facilitate the turning
of the machine into different attitudes on the jointing of the links C C and to
retain it in its attitude, a worm gearing with a segment of a worin wheel may be
applied at K, so that by turning the worm in the one direction or the other, the
machine can be more or less inclined.
Having thus described the nature of my invention and in what manner the same
is to be performed, I claim :-
Suspending portable machines for punching, rivetting and such like operations

page_text: by a trunnion embraced by a sleeve which is connected by parallel links to a beam,
substantially as and for the purposes herein set forth.
In witness whereof I the said John Fielding have hereunto set my hand
and seal this Tenth day of August in the year of our Lord One thousand
eight hundred and eighty two.
JOHN FIELDING. (L.S.)