A NEW OR IMPROVED PORTABLE FIELD FORGE
Year: 1882

page_text: LETTERS PATENT to Lorentz Albert Groth, K.,G., V., Civil Engineer and
Proprietor of the Scandinavian Patent Office under the Firm of L. A. Groth
& Co 30 Finsbury Pavement London E.C., for an invention of "A NEW
OR IMPROVED PORTABLE FIELD FORGE."-A communication from abroad by
PROVISIONAL SPECIFICATION left by the said Lorentz Albert Groth at
the Office of the Commissioners of Patents on the 27th March 1882..
LORENTZ ALBERT GROTH, K.G.V. Civil Engineer, and Proprietor of the
Scandinavian Patent Office, under the firm of L. A. Groth & Co; 30 Finsbury
Pavement, London. E.C. "A NEW OR IMPROVED PORTABLE FIELD FORGE
a communication from abroad by Albert F Hammel, of Copenhagen, in the
Kingdom of Denmak
The object of this invention is a forge, which combines lightness, with strength,
and general utility; and by its portability, is suitable for army and outdoor
purposes.
It is composed of two principle parts the forge hearth (connected with an inner
case), and the outer case. These cases, being made of sheet iron, are hollow and
slide within each other telescope wise. When required for use, the outer case forms
a base, while the inner case is supported at a convenient height by hand screws,
working in a slit cut for that purpose.
A rotary fan (working by an endless screw arrangement thus obviating the use
of bands or cords) is arranged on the side of the machine, to project a stream of air
under the forge hearth, and through a nozzle in its centre. The forge is also
provided with a wind guard, or screen, which can be adjusted to protect the tire
from wind from any quarter, in which it may be blowing. The lid of the outer
case, fixed on the inner case (when laid back and supported by two horizontal bars,
which can be drawn out) may be used as a tool tray.
:
When not in use the rotary fan is deposited in the bottom of the inner case, this
is lowered into the outer case; the wind guaid folded and placed inside, and the
lid screwed down it can then be carried as easily as an ordinary box.

page_text: 1
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Lorentz Albert Groth in the Great Seal Patent Office on the
27th September 1882.
LORENTZ ALBERT. GROTH K.G.V. Civil Engineer and Proprietor of the
Scandinavian Patent Office under the Firm of L. A. Groth & Co 30 Finsbury
Pavement London E.C. " A NEW
OR IMPROVED PORTABLE FIELD FORGE
"
A communication from abroad by Albert. F Hammel, Manufacturer at Copenhagen
in the Kingdom of Denmark
Fig 1 is a side view of the complete apparatus open and in working condition
Fig 2 is a plan and Fig 3 a front view of Fig 1. Fig 4 is a detail view in
vertical section of the driving wheel and rotary fan. Fig 5 a plan of Fig 4 and
Fig 6 a view of the apparatus closed and ready for transport.
Figs 1. 2. 3 and 6 are shown to 1/8 of natural size & Figs 4 & 5 to 1/4
This forge is composed of two principal parts the forge hearth m connected with
an inner case b and the outer case a. These cases being made of sheet iron are
hollow and slide within each other telescope wise. When required for use the
outer case a, forms a base while the inner case 6 is supported at a convenient height
by hand screws working in a slit cut for that purpose.
A rotary fan d working by an endless screw arrangement e (thus obviating the
use of chains bands or cords) is fixed on the side of the machine by a supporting
flange and a hand screw f to project a stream of air under the forge hearth m
and through a nozzle in its centre. A draw plate k is arranged beneath this nozzle
in order to remove any ashes &c that may have fallen through into the air
chamber.
The forge is also, provided with a folding wind guard or screen C which can be
adjusted to protect the fire from wind from any quarter in which it may be
blowing An hinged flap in this screen allows work to be done while the guard
encloses the fire.
The lid of the outer case i fixed on the inner case when laid back is supported
by two horizontal barsj (which can be drawn out) and may be used as a tool
tray.
When not in use the rotary fan and driving wheel is deposited in the bottom of
the outer case the inner case is lowered the wind guard folded and placed inside
and the lid screwed down, it can then be carried as easily as an ordinary box.
Having now described the nature of the said invention 'and the manner in which
the same is to or may be carried into effect I would have it understood that what
I claim is
First. The application of an endless screw arrangement to the driving wheel
and rotary fan by which the use of bands chains or cords is obviated.
Second. The arrangeinent of inner and outer cases of sheet iron constructed so
as to slide within each other telescope wise.
Third. The combination of the inner and outer cases the driving wheel and
rotary fan, the wind guard and the arrangements by which the lid may be used as
a tool tray the whole combined and operating substantially as hereindescribed and
illustrated in the drawings.
In witness whereof I the said Lorentz Albert Groth have hereunto set my
hand and seal this twenty sixth day of September in the year of Our
Lord one thousand eight hundred and eighty two.