Improvements appertaining to Extension Tables.
Year: 1898

page_text: Date of Application, 7th Apr., 1898-Accepted, 14th May, 1898
COMPLETE SPECIFICATION.
Improvements appertaining to Extension Tables.
I, JOHN KIRKMAN, of 6; Fleet Street, Bolton, in the County of Lancaster, 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 ascertained in and by
the following statement :-
That is to say;-it relates to that class or kind of extension tables wherein the
extending parts when not in use are slided from each side of the table beneath the
central or principal top-part of said table, and my invention has for its object
the production of said top-parts (both the principal and the others) by following
such a method of construction as will prevent the wood, out of which they are
made or constructed, from cracking, splitting or warping.
In the accompanying sheet of drawings;-Fig. 1 is an end elevation of a table
constructed in accordance with my invention.
Fig. 2 is a view of said table as seen from above.
Fig. 3 is a sectional side elevation of the table with the top parts withdrawn or
brought into position to form the extended table.
Fig. 4 is a sectional view enlarged scale showing the method of construction
followed in the production of the top-parts as hereinafter described.
In carrying my invention into effect I make. the several pieces of wood
or boards out of which the top-parts a b c are produced to fit each other,
however, instead of these boards being held together by being glued
or otherwise rigidly secured to the end binding pieces df, these latter are
grooved to receive the projecting tongues g of said boards (see Fig. 4), and the
lower parts h of these binding pieces df are made to extend sufficiently beneath
same to enable the insertion of screws k (or pegs, nails or other like fixing devices
or means) therein to pass therethrough to enter into the boards forming the
parts abc thus to secure one part to the other, while the openings in the binding
pieces df through which said screws k pass are suitably slotted (see w Fig. 4^) to
allow said fixing screws k to move laterally therein to meet the requirements of the
boards as these latter shrink or expand as is well understood. By which means
any one board in said top-parts a b c is enabled or permitted to move to
accommodate the expanding or contracting of any other of said boards as
circumstances may necessitate so that the cracking or splitting of these is
avoided.
Again the extending edges of the pieces df keep the overhanging top-piece (as
that at a Fig. 4) clear of that slided beneath it so that a perfectly free course m is
afforded for the passage of a current of air beneath or between them thus the
atmosphere will act equally thereon on both sides of the boards by which means all
warping tendencies are counteracted.

page_text: 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 tables of the class described the method of constructing and securing the
end binding pieces substantially as herein specified.
2. In the production of extension tables, top-parts constructed substantially as
herein set forth.
Dated this 6th day of April 1898,
J. KIRKMAN..
Per Samuel Hey,
Agent.