Improvements in Apparatus for Lifting or Handling Crucibles, Melting Pots, and other Vessels.
Year: 1886

page_text: Improvements in Apparatus for Lifting or Handling Crucibles,
Melting Pots, and other Vessels.
I LOUIS THEODOR KARRAS of No 20 Falken Strasse in the City of Dresden,
Saxony, Germany, Mechanic, do hereby declare the nature of my Invention for
"IMPROVEMENTS IN APPARATUS FOR LIFTING OR HANDLING CRUCIBLES MELTING
POTS AND OTHER VESSELS" and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:—
My invention relates to improvements in pot lifters or apparatus for lifting or
handling pots, smelting vessels, crucibles or other vessels in heated state without
injury or inconvenience to the operator. In order to effect this purpose I employ
an instrument constructed on the principle of a pair of tongs or shears the arms of
which are at the end provided with suitable claws corresponding to the form of the
handle of the vessel whilst the other ends are provided with suitable handles. The
arms are held open by means of an appropriate spring wound or bent around
the axis or pivot of the instrument and pressing with its ends against the arms or
legs carrying the handles. To the axis or pivot of the said instrument I also apply
two stays or arms which run in downward inclined position towards the vessel to
be lifted from the fire so as to hold the same in correct position.
A bell shaped protector can be placed over the instrument so as to protect the
hands of the operator from the heat radiating from the hot vessel.
This pot lifter can be applied to great advantage in technical establishments,
iron foundries, chemical and other factories as the same prevents the hands of the
operator from being scalded by any matter boiling over in the aforementioned bell
shaped protector.
Figure 1 is a side elevation of my improved pot lifter with smelting pot and the
stays e supporting the said pot.
Figure 2 is a view of the lower side of the instrument or pot lifter with the
washer and bolt head for holding the spring and the stays removed.
Figure 3 is a side elevation of my improved instrument or pot lifter with bell
shaped protector g.
a a are the two longer arms or grippers with the claws b which can be made of
one piece with the said arms or be attached to the same in appropriate manner and
preferably of such form that they correspond with the form of the handle to the
vessel to be held by the same-cc are the handles of the pot lifter. d is the axis
or pivot around which the handles and arms of the said pot lifter turn.

page_text: e e are two stays which are made from one piece of metal and stationary as shown
in the accompanying drawings.
The said stays e are held rigidly in position by means of two bolts which are at
the one end fixed in a heart or other piece of metal h and at the other end in the
stays e e-In this case I prefer to bend up the one end or side of the sheet metal
so that the same acts as support or handle for the hand protector which can be
held rigidly attached to the said holder by means of suitable screws.
Or if it is desired to employ my improved pot lifter for pots of various dimen-
sions the said stays can be made adjustable in which case the holder / would be
superfluous and the stays adjusted to each other by means of a suitable screw rod
or its equivalent.
fis a spring which is laid around the axis or pivot d in such manner that the
ends of the same press against the inner surface of the handles c so as to hold the
latter apart.
g is a bell mouthed protector which is attached to the holder h or held in other
suitable manner and serves to protect the hands of the operator against the
radiating heat or splashes of heated matter. h is a piece of sheet metal which is
fitted to the bolt axis or pivot d, serves to receive the bolts i for holding the stays e
and is provided with an inclined upwards projecting part as shown in Figure 1
which can be employed as bearing for the bell mouthed haud protector.
The stays e can be made adjustable so as to enable my improved pot lifter to be
used for pots or other similar vessels of various sizes.
Having now particularly described invention and in what manner the same is to
be performed, I declare that what I claim is
In a pot lifter or instrument for handling pots, crucibles and other vessels, the
combination of the arms or legs a a the claws b, handles c and bell mouthed hand
protector g with the stays e e substantially as described in the foregoing specification
and shown in the accompanying drawings.
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TOLL
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T1900