IMPROVEMENTS IN THE CONSTRUCTION AND MANUFACTURE UNDED FRAMES OF COLLIERY CORVES AND WAGONS
Year: 1882

page_text: LETTERS PATENT to Robert Hadfield of Sheffield in the County of York
for an invention of "IMPROVEMENTS IN THE CONSTRUCTION AND MANUFACTURE
UNDED FRAMES OF COLLIERY CORVES AND WAGONS"
OF THE WHWIN
גום
PROVISIONAL SPECIFICATION left by the said Robert Hadfield at the
Office of the Commissioners of Patents on the 5th April 1882.
ROBERT HADFIELD of Sheffield in the County of York "IMPROVEMENTS IN THE
CONSTRUCTION AND MANUFACTURE OF THE WHEEL OR UNDER FRAMES OF COLLIERY
CORVES AND WAGONS
و"
This Invention has for its object improvements in the construction and
manufacture of the wheel or under frames of colliery corves and wagons used for
carrying coals, clay-sand, ores and other materials.
In order to carry out my invention I cast such wheel or under frame in steel or
malleable iron in a single casting complete at one operation.
Such frame when so cast partly acts as its own draw bar as by simply
attaching a short bolt and shackle to each end thereof it constitutes a complete
draw bar.
Around the top of such frame I cast a suitable flange which not only imparts
additional strength thereto but also allows of the wagon body being attached by
bolts or rivets or in any other convenient manner. Such wagon body I construct
preferably of steel or iron plates or it may be made of wood and built up in the
ordinary manner and fitted with live spring or dead wood buffers.
From the improved construction of such under or wheel frame I am enabled to
dispense altogether with the ordinary pedestals by simply dropping small bearings
in the hollow part of the frame immediately above the axle neck-Such bearings
can when worn out be easily renewed in a few minutes.
My improved under frame is practically indestructible as it is made without
either welds, joints, bolts, or rivets all which gradually work loose and cause great
trouble and annoyance.

page_text: Another feature of my invention is that when casting my improved under or
wheel frame I form suitable grease boxes in the hollow part of the said frame
exactly over the neck of the axle bearing where lubrication is required and thus
render the same a self oiling corve or wagon frame I also leave the axle quite
free and exposed at the bearings so that if preferred it may readily be lubricated
either by hand or machine in the usual way.
Another advantage arising from the improved construction of such under frame
is that it serves as a guard for the axle which when placed in the hollow underside
of such frame is effectually protected thereby thus totally obviating the liability
to injury to which the axles of the colliery corves are particularly subject owing
to their continually being bent and broken by coming in contact with coal ore and
other substances getting on and between the rails as my improved frame is not
only impervious to injury from any such obstacles but it will also strike off and
remove any such obstructions from the roadway thus preventing all possibility of
injury to the axle.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Robert Hadfield in the Great Seal Patent Office on the 4th October
1882.
ROBERT HADFIELD of Sheffield in the county of York "IMPROVEMENTS IN THE
CONSTRUCTION AND MANUFACTURE OF THE WHEEL OR UNDER-FRAMES OF COLLIERY
CORVES AND WAGONS."
"
This Invention has for its object improvements in the construction and
manufacture of the wheel or underframes of colliery corves and wagons used for
carrying coals, clay, sand, ores and other materials.
In order to carry out my invention I cast such wheel or under frame, in steel or
malleable iron in a single casting complete at one operation.
Such frame when so cast partly acts as its own draw bar as by simply
attaching a short bolt and shackle to each end thereof it constitutes a complete
draw bar.
Around the top of such frame I cast a suitable flange which not only imparts
additional strength thereto but also allows of the wagon body being attached by
bolts or rivets or in any other convenient manner. Such wagon body I
construct preferably of steel or iron plates and it may be made of wood and
built up
in the ordinary manner and fitted with live spring or dead wood
buffers.
From the improved construction of such under or wheel frame I am enabled to
dispense altogether with the ordinary pedestals by simply dropping small bearings
in the hollow part of the frame immediately above the axle neck. Such bearings
can when worn out be easily renewed in a few minutes.
My improved underframe is practically indestructible as it is made without
either welds, joints, bolts or rivets all which gradually work loose and cause great
trouble and annoyance.
Another feature of my invention is that when casting my improved under or
wheel frame I form suitable grease boxes in the hollow part of the said frame
exactly over the neck of the axle bearings where lubrication is required and thus
render the same a self oiling corve or wagon frame.
I also leave the axle quite free and exposed at the bearings so that if preferred
it may readily be lubricated either by hand or machine in the usual way.
Another advantage arising from the improved construction of such under frame
is that it serves as a guard for the axle which when placed in the hollow underside
of such frame is effectually protected thereby thus totally obviating the liability
to injury to which the axles of colliery corves are particularly subject owing to
their continually being bent and broken by coming in contact with coal ore and
other substances getting on and between the rails as my improved frame is not
only impervious to injury from any such obstacles but it will also strike off and
remove any such obstructions from the roadway thus preventing all possibility of
injury to the axle.
And in order that my said invention may be better understood and readily
carried into effect I will now proceed to describe the drawings hereunto annexed.
Figure 1 of such drawings represents a view in end elevation.
Figure 2 shews a plan view of the bottom and
Figure 3 shews a view in sectional end elevation of a colliery corve or wagon
having my improvements applied thereto.
A A Figures 1, 2 and 3 is the underframe consisting of one complete casting
having buffer boxes B, B, recesses for brasses C C and strap guards D D and grease
boxes E E.
'

page_text: The brasses and strap guards being the only loose parts, my improved under
frame can be readily fitted and the body either bolted or rivetted on.
Wheel or
under frames of colliery corves or wagons when constructed according to my
improved principles possess the following important advantages vist.
Firstly Great strength combined with extreme lightness.
Secondly My improved under frame is also a self oiling corve or wagon frame
the grease boxes being formed in the hollow part of the frame exactly over the
necks of the axle bearings as herein before described.
Thirdly-Owing to its improved construction I am able to entirely dispense with
the usual pedestals by simply dropping four small bearings in the hollow part of
the said under frame immediately above the axle neck.
Fourthly. The centre part of my improved under frame forms its own draw bar
by simply affixing a short bolt and shackle thereto at each end..
Fifthly. It affords complete and effectual protection to the axle from injury
owing to such axle being placed in the hollow space provided therefor in my
said improved under frame thereby avoiding the great trouble inconvenience
and annoyance usually experienced and arising from injury to and breakage of
axles.
Having thus particularly described and ascertained the nature of my said
invention and the manner of carrying the same into effect I would here observe
that I do not confine myself to the exact or particular forms herein described and
shewn as my said improved under frame can be adapted to suit flat bottomed
circular or other forms of corves or wagons now in use as may be required.
What I claim and desire to secure as novel and of my invention is
Firstly. The improved method of manufacturing the wheel or under frames of
colliery corves or wagons by casting the same in steel or malleable iron complete at
a single operation substantially as hereinbefore described and shewn.
Secondly. The improved construction and method of fitting such wheel or
under franes when so manufactured substantially as hereinbefore described
and shewn whereby I obtain the various important advantages hereinbefore
enumerated.
In witness whereof I the said Robert Hadfield have hereunto set my hand
and seal this Fourth day of October in the Year of Our Lord One
thousand eight hundred and eighty two.