An Extensible Table.
Year: 1891

page_text: Date of Application, 30th Apr., 1891-Accepted, 20th June, 1891
COMPLETE SPECIFICATION.
An Extensible Table.
I, CARL OBERLÄNDER of Stettin-Gruenhof in the Empire of Germany, Master
Joiner, 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 :-
This invention relates to an extensible table in which two or more leaves may be
inserted, or withdrawn at will, at each end in order to lengthen the table. In the
former case the arrangement is such that by pulling a handle fixed below the end
leaf, this leaf can be withdrawn from the table frame, and placed beneath the others,
and by pushing the said handle this leaf can be returned to its place on the frame.
This handle is arranged so that it can be shifted to a small extent and is connected
by means of a rod to a cam of peculiar shape, so that by pushing steadily
the first extensible leaf, the leaf next to it is raised by means of the raising device
hereafter described so that the leaf or leaves in before the raised leaf may be
pushed under it. When the leaves are required to be drawn up from beneath, leaf
holders or grippers having the shape of hooks come into operation and carry away
with them the leaves to be reinstated.
In the accompanying drawings
Fig. 1 is a longitudinal section of the table from the right hand side of which the
leaves have been extended.
Fig. 2 is an underside view of the table.
Figs. 3 to 5 are side views of the leaves showing the raising device for the
same.
Figs. 6 and 7 are also side views of the leaves showing likewise the raising
device for the same.
Fig. 8 is a cross section of the table.
Fig. 9 shows on an enlarged scale a folding foot fixed to the lowermost leaf, and
Figs. 10 and 11 show also on an enlarged scale the device for raising the
leaves.
A' is the top or upper plate of the table which cannot be withdrawn but may be
slightly moved up and down. A² and A³ are the movable leaves having bevelled
edges (Figs. 1 and 9) B is the double guide which moves upon the fixed ledges b,
while the guiding piece 61, fixed to the leaf As slides in the lateral parts a, a, of
the guide B. The support c, fixed to the latter guide carries the leaf 'A'
(Fig. 1).
The leaf A is fixed to the guide B by means of the angle iron d. The leaf A*
carries an edge piece or bar e, against which bear the folding feet C,; the latter
can be folded down and are connected to a cross beam C¹ which is fixed to the
bar e, by means of a hinge c', (Fig. 9). The feet C are held in their horizontal
position by hooks i, which are kept in a downward position by the springs. The
hooks i engage with the hooks k, countersunk in the beam C, D, is a support for
the leaves and consists of a hook v, (Figs. 6 and 7) fixed to the leaf A' and of
another hook hinged at n' to the leaf A³ and pressed upward by the spring r.
the device for raising the leaves; it is fixed to the last leaf A³ and comprises a cam
or lever g, hinged at g¹ to the inner end of the leaf A³ and the shape of which is
clearly shown in Figs. 10 and 11. The rod fis articulated to the pivot g² and passes
through the edge piece or bar e, (Fig. 1) being terminated with a handle f
(Figs. 1. 3. 4. 5). The bent spring h, shown in Fig. 11 is screwed to the inner end
of the leaf A².
E, is
When it is desired to extend or lengthen the table the handle f', of the raising
device is pulled whereby the leaf A³, is drawn, the projection 2, (Figs. 2. 3) of
the rod fheing now placed against the odes nisce

page_text: ng
and
As the hook n, of the leaf holder is placed before the hook v, (Fig. 7) the
plate A², is drawn in consequence of the pull applied on the leaf A³, until it is fully
extended, when at this moment the leaf A', is laid upon the hinged hook
presses the same by overcoming the pressure of the spring r, so that the hook n, is
freed from the hook v, and the leaf A³ alone is moved forward until fully extended
(Fig. 6).
As the leaf A2, is moved forward, the guide B, connected by the angle iron d, to
the leaf A2 is moved with it while sliding on the ledge . As soon as the leaf A²,
has reached the end of its stroke, the cross-bar ', comes out of the guide B. The
pull on the rod f, has caused the cam g, of the leaf-holder E, to asssume the position
shown in Fig. 10, that is to say the projection 3, of this cam has moved downwards,
so that all the leaves A', A2, A3, assume now a horizontal position. The leaves at
the other end of the table are subsequently extended in a similar manner.
By pressing the knob e³, (Fig. 9) the hook i, is raised and releases the hook k
and thereby the feet C, which drop down, whereupon the second hook k¹, assumes
the position shown in dotted lines in front of the hook 2, thus prevents the said feet
from extending too far out.
When the leaves are required to be pushed back home, the feet C, are folded up
in a horizontal position until the hook i, engages again with the hook k. The
handle f, is then pushed inwardly whereby the rod f, of the cam g, (Fig. 10)
assumes the position shewn in dotted lines, the projection g³, of the cam raises the
leaf A², until by applying a strong pressure upon the handle f' the leaf A³, is made
to slide against the bevelled edge of the leaf A2, and disappear thereunder.
When the leaf A³, is fully under the leaf A2, (Fig. 11) the lifting cam 9, arrives
below the spring , so that by pressing again upon the handle f¹, the projection g³, of
the said cam raises the spring h, and with it the leaf A', whereupon the leaves A²,
and A³, are pushed in the manner above described under the uppermost leaf A¹.
The other part of the table, the leaf holder and the guides automatically return as
will be easily understood to their normal position.
By extending the mechanism, a greater number of leaves may be used.
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. An extensible table characterized by the leaf raising device E, for automatically
lifting the movable leaves, when the table is contracted consisting of a cam g, fixed
to the lowermost leaf A and connected to the actuating rod f, furnished with a
handle f, this cam operating the raising of the leaves by means of its projection g³,
as herein explained and set forth.
2. An extensible table of the class claimed above in which the extension of the
leaves is supported by the leaf holder D, consisting of the hook v, fixed to the
leaf A, and of the articulated hook n, fixed to the leaf A³, and raised by the
spring r, as herein explained and set forth.
Dated this 30th day of Anril 1891
S. S. BROMHEAD,
97, Newgate Street, London, E.C., Patent Agent.