Improvements relating to Machines for Making Heads for Casks or Barrels.
Year: 1895

page_text: Date of Application, 25th Nov., 1895-Accepted, 28th Dec., 1895
COMPLETE SPECIFICATION.
Improvements relating to Machines for Making Heads for Casks or
Barrels.
I, GOTTHARD RETTIG, of 12 Kungsträdgårdsgatan, Stockholm, Sweden,
Consul-General, 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 :-
The present invention relates to a lathe or heading-machine for producing
finished cask-heads or barrel-heads from wooden blanks.
My improved machine is illustrated in the accompanying drawing, in which :-
Figure 1 is a front elevation, partially in section, the blank being represented in
its position before starting the machine;
Figure 2 illustrates the machine in front elevation showing the position of the
various parts after the blank has been clamped in position,
Figure 3 illustrates the position of the same parts after the turning of the blank
is completed ;
Figure 4 is a section on the line -x, Figure 1 and
Figures 5 and 6 are detail-views illustrating the turning tool and planing cutter.
The two head-stocks B, C resting on the bed A are each fitted with a revolving
spindle b, c, which is movable axially, the said spindles being provided at their
adjacent ends with discs and g respectively. To the spindle 6 there is also rigidly
attached a friction-wheel m, and on the same spindle is mounted a loose belt-
pulley R, to which power is transmitted from the driving motor. In the part of
the bed situated between the head-stocks, there is an opening or gap D com-
municating with a trough or passage E through which the shavings from the blanks
are carried off. Above the opening just mentioned is arranged a casing u for
preventing the material cut off from being thrown out of the machine. The outer
end of the spindle c is connected by means of levers f; c and rods b', d', to a
counterweighted treadle a in such a manner that it will be moved inwardly when the
treadle is depressed. As previously stated, the other spindle b is also movable
axially, being pressed inward by means of a weighted lever a¹.
Outside each of the discs g, h there is placed a tool-rest p, p', movable longi-
tudinally relatively to the bed A. and carrying both a turning tool q, ql and a
planing or chamfering cutter z, Figure 6. The tool-rest P is connected to a lever o
in such a manner that it will be moved towards the middle of the lathe when the
lever is swung down from the position shown in Figure 2 to that indicated in
Figure 3, and the tool-rest p¹ is so arranged that it will at the same time be pushed
inward towards the middle of the lathe. This may be accomplished by means of
a lever v the free end of which is located in the path of the lever o, the said
lever v being secured to a shaft v', to which there is also attached a weighted
arm which projects from the said shaft in the opposite direction and is connected
to the tool-rest p by means of a link v, guided by a pivoted rod vlll.
to
The blank y is inserted in a frame or support k, located close to the disc g; the
treadle a is then depressed thus causing the spindle c together with the disc
move towards the disc h, the blank, as a result, being removed from the support k
and clamped between the two discs g, h. On continued depression of the treadle,
he spindles, together with the discs and the blank, are moved still further, until the
wheel m comes in contact with the revolving belt-pulley R, the discs g, h and the
blank between them being thereby caused to revolve. The lever o being now

page_text: swung down will cause the tool-rests p, pl with the turning-tools q, q' and the
planing cutters 2 to be carried from both sides against the blank and to turn and
chamfer off the latter so as to form a finished cask-head or barrel head. When
this operation is completed, the lever o is raised, the tool-rests are consequently
separated and, if the treadle a is now released, the spindles b, c together with the
discs h, g and the work will resume their original positions, as shown in Figure 1,
the finished head may subsequently be removed from the machine. To prevent
the blank from slipping during the turning operation, the disc g may be provided
with projecting points which are pressed into the wooden blank, but are after-
wards extracted when the blank after being operated upon is returned to the
support k.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. The combination, in a heading-machine, of two revolving spindles movable
axially in their respective head-stocks and provided at their adjacent ends with
discs for clamping the work, one of the said spindles also carrying a loose belt-
pulley and a fixed friction-wheel adjacent thereto, and two tool-rests arranged
outside the said dises and provided with means for moving them simultaneously
either towards or away from the work, substantially as hereinbefore described.
2. The combination, with the tool-rests, of a device for moving the same
towards or away from each other, consisting of a double-armed lever connected
to one of the tool-rests and acting, when depressed, upon another lever connected
to the other tool-rest by means of a link which acquires a sidewise motion when
lifted, substantially as described.
3. The improved heading-machine constructed substantially as described with
reference to the accompanying drawing and operating as, and for the purposes,
above specified.
Dated this 25th day of Newzomho: 1005
D. YOUNG & Co.,
11 & 12 Southampton Buildings, London, W.C.,
Agents for the Applicant.