Year: 1889

page_text: I, ADOLF POTTER, manufacturer of Andernach on the Rhine, in the Country of the
Rhine, Germany 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 :-
My improvements in stave cutting machines consist in the use of a curved cutter
fixed to a revolving cylinder in such a manner, that the knife lies radial and
longitudinally slanting to the axis of the cylinders The block is held against the
cylinder by means of levers and by each revolution of the cylinder and with it the
knife a stave will be cut off and removed from the machine. By this means a great
deal of labour will be saved as the only manual labour required will be that which is
necessary to place the blocks to be cut into staves successively on to the machine
In order to make my invention more clear I refer to the accompanying drawings in
which similar letters denote similar parts throughout the several views.
Fig. 1 shows a longitudinal section through the machine.
Fig 2 shows a vertical cross section through the same.
Fig. 3 shows a cross section of the cylinder and cutter drawn to a larger scale.
The two discs K and K are keyed to the driving shaft W and form the ends to
which the iron plate cylinder C is fixed. The cutter, lying radial and longitudinally
slanting to the axis of the evlinder, is fixed at each end to the discs K K¹. The
cylinder C is not perfectly cylindrical but, as will be seen from fig. 3, at that point
where the cutter lies, becomes smaller in diameter, so as to allow the stave being cut
to pass freely behind the knife without getting jammed. On the shaft to which has its
bearings in the under part of the machine frame are keyed the lever arms A A A A
and the pulley T to which the weight G is attached, and lever arm h
The arms A A A A are for the purpose of holding the block to be cut into staves
continually against the cylinder C and this is attained by the action of the weight G
over the pulley T The lever arm h is for pulling the arms A A A A backwards when
a new block is to be cnt np.
There is also another shaft which has its bearings in the under part of the machine
frame and to which are keyed the driving pinion Z and sheave pulley S. The driving
pinion Z gears into the cog wheel Z' on the cylinder shaft W and the sheave pulley
is connected by a belt with the main driving shaft

page_text: The table tt for holding the block of wood to be cut into staves is carried by the
brackets c c¹ fixed to the machine frame
To work the machine it is only necessary to set the same in connection with the
main driving shaft, to draw the lever arm h backwards whereby the arms AAA A
will be brought away from the cylinder, then to lay the block to be cut up on to the
table and to let the arm go when the block will be held close to the cylinder by the
arms A A A A acted on by the weight G. With every revolution of the cylinder one
stave will be cut off from the block. In this manner about 60 to 80 staves can be cut
per minute.
The great advantages of this machine over others for the same purpose are the
simplicity and durability of its construction and the effective and economical manner
of its working.
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.) In machines, for cutting staves for casks the combination of the cutter M with
a cylinder having its mantle hollowed out in that part where the knife lies, for the
purpose and in the manner, substantially as described.
2.) In machines for cutting staves for casks the combination of the cutter M, the
cylinder C, lever arms A A A A, pulley T and weight G with the table ttt, in the
manner and for the purpose, substantially as described.
RAYNER & CASSELL,
37, Chancery Lane, London,
Agents for the Applicant.