Year: 1899

page_text: JOSHUA MARTIN, Joiner, 77, Cottage Grove, Clapham, S.W., do hereby declare
the nature of this invention to be as follows:-
This bracket can be made in hard wood or metal and is made with two wedges
to fit into a groove with cross-bar connected to carry shelf on one wedge and
the other wedge attached so as to allow for working with hole in the centre of
the two wedges to insert key to tighten or slack. It is perfectly adjustable and
easy to move up or down and instantly fixed. It is specially suitable for book-
shelves or shop-fittings either for light or heavy weights and I claim it to be
superior to anything of its kind that I have seen.
JOSHUA MARTIN, Joiner, 77 (95), Cottage Grove, Bedford Road, Clapham, 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:-
66
The object of this invention is to provide a shelf-support" simple in
construction yet strong & durable & one that will permit of absolute adjustment
so that the shelves may be easily & quickly adjusted to and fixed in any desired
position and which shall at the same time be so arranged that it will neither
occupy any of the book space nor present any projecting surface that would tend
to injure or deface the binding or leaves of the books.
The present invention relates to improvements in brackets for the support of
bookshelves and such like, the bracket being adapted to be used in a groove in
an upright, and being fixed in the required position by the pressure of its outer
edges against the opposite edges of the "grove."
"
33
This invention can be made in wood or metal. It consists of two "wedges'
one of them carrying a cross piece" sufficiently long to firmly support the whole
end of the "shelf," and a "key" by means of which the two wedges are actuated
when in position for use.
Fig. I gives front view of the "wedges" (A, B) when placed together ready
to put into the groove of the upright. The dotted lines represent the "inner"
edges of the wedges in contact with each other almost throughout except where

page_text: "
the "key hole" (a b) is formed. (The " cross-piece" is here omitted for sim-
plicity and clearness of description.)
"
Fig. II shows the relative positions of tho "wedges" after they have been placed
in the groove & there actuated by the "key." The action is this:-Wedge "A"
is forced upward, wedge "B" is forced downward, the width between their
"
outer edges increases till the bracket becomes "fixed" or "locked."
Fig. III shows the wedges as they appear when "locked" in the " groove,"
and the position & indicated length of the "cross-piece" (gh) which is to carry
the shelf. This "oross-piece" is fixed to, or (in case of metal) cast as part of
wedge "B." It is of course fixed at right angles to the front side of the wedge,
and is sufficiently wide and thick to carry the shelf and its contents. (It needs
no separate drawing.) Reference to this figure will show that when in use the
two wedges are kept from vertically falling apart ("A" from "B") by the
shape of their edges at e d, e f, whilst the shelf resting upon the "cross-piece'
prevents "A" & "B" falling out of the groove laterally.
"
Fig. IV is a front (and back) view of the "key." When the "key" is used the
projections (, m) fit respectively into the parts a &b of the "key hole"; and
these projections are so made that when the "key" is inserted the "shoulders"
(o, p) of it press against the faces of the wedges which are thereby pressed
well "home" into the bed of the groove.
Having now particularly described & ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:
I. An adjustable shelf bracket, consisting of two wedges each of them con-
taining half a "key hole," and one of them carrying a "cross-piece, substantially
as herein described.
II. A "key" adapted to actuate the said two wedges, constructed substantially
as herein deomiked
Dated this 16th day of December 1899.