Improvements in Extension Tables.
Year: 1891

page_text: Date of Application, 20th Mar., 1891-Accept d. 25th Apr., 1891
COMPLETE SPECIFICATION.
Improvements in Extension Tables.
1. Joux ARTHUR BECKETT, of 12, Dale Street, Edgeley, Stockport, in the
County of Chester, Cabinet-maker, do hereby declare the nature of this invention,
and in what manner the same is to be performed. to be particularly described and
a-certained in and by the following statement :-
This invention relates to improvements in extension tables and has for its object
to provide means whereby the same can be extended in length in a more simple
and ready manner than heretofore has been the case, and whereby such as screw:,
or racks and pinions necessary in tele-copic tables are entirely dispensed with.
And in order that my invention may be more fully understood 1 have caused to
be appended hereunto one sheet of drawings marked with letters of reference
indicating like parts in the various figures.
Fig. 1 is a sectional side view at line A-B of Fig. 5, showing the table in its
normal condition, i.e. closed;
Fig. 2 is partly a sectional side view, also at line A-B of Fig. 5, and partly a
side elevation, showing the table extended;
Fig. 3 is a plan at a reduced scale showing the table extended;
Fig. 4 is partly a sectional side view at line C-D of Fig. 5, and partly a side
elevation showing the table in its normal condition, i.e. closed;
Fig. 5 is a plan of the table with the top leaf removed.
In carrying out my invention the improvements consist in the combination of
a vertically movable leaf a with two laterally sliding leaves b, the latter being
adapted to be concealed under the former when the table is in its normal condition
and to be drawn out sideways and placed against the ends of the lenf a, so as to
form an extension of the same.
This preferably carry out in the following manner
On the table frame I fix a central strip d, and on each side thereof I
arrange to slide in the table frame e a leaf, furnished respectively at the under
side with two inclined rails e, fitting into grooves ; & formed respectively in
the table frame c and the under side of the central strip d and having stops d'.
The central strip d and the leaves are covered by the top leaf a, having in
its centre attached a catch g and at each side thereof a guide pin 4, passing
through holes formed correspondingly in the central strip d. Underneath the
latter is fixed a spring bolt adapted to engage the catch I and thus lock
the leaves a && together to the table frame c. The said spring bolt I
operate from the outside of the table frame, by means of a knob, connected
to the spring bolt 4 by means of a wire i, or cord or chain. In a recess k
formed in the central strip d, I employ between the latter and the movable leaf a
around the catch a spiral spring, which has a tendency of raising the leaf a
into the position shown in dotted lines Figs. 2 & 4, the moment the spring bolt 41
is withdrawn. This permits of drawing from underneath the top leaf a, the
leaves, into the position shown in Figs. 2 & 3, which by reason of their
inclined rails are raised so as to be level with the top leaf a, when depressed
between the inner ends of the same and locked in its normal position by the spring
bolt and catch .
In lieu of employing a spring bolt and catch as described, the raising and
locking of the leaf a may be effected by means of a sliding bar or leavers and the
spring may be replaced by any other form of spring or springs employed in any
other convenient manner.

page_text: Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
"In extension tables,"
1st. The combination of a vertically movable leaf a with two laterally sliding 5
leaves, the latter being adapted to be concealed under the former when the table
is in its normal condition and to be withdrawn sideways and placed against the
ends of the leaf a to form an extension of the same, substantially as and for the
purpose specified.
2nd. The table leaf a being under the influence of a spring or springs and 1
having a catch, the latter being adapted to engage a spring bolt h¹ fixed to the
central strip and lock the leaves a &b to the table frame e and the former
to self-actingly raise the top leaf a to permit of withdrawing the leaves b,
substantially as and for the purpose specified.
Dated this 10th day of March 1801
F. BOSSHARDT & Co.,
4, Corporation Street, Manchester, Agents to Applicant.