Improvements in Tripod Stands.
Year: 1890

page_text: Date of Application, 10th Sept., 1890
Complete Specification Left, 10th June, 1891-Accepted, 11th July, 1891
PROVISIONAL SPECIFICATION.
Improvements in Tripod Stands.
I, ELIZABETH THOMSON of 2 Florentine Gardens, Hillhead, in the County of
Lanark, North Britain, Artist do hereby declare the nature of this invention to
be as follows: :-
This invention relates to an improved stand and is specially applicable to cameras
or sketching easels. The advantages are lightness, compactness and the ease with
which the length of the legs can be adjusted.
The stand consists of a tripod with legs elongating by sliding motion for easy
adjustment for height of camera or for uneven ground. When adjusted to the
proper length the sliding motion is prevented by wedge joints. The legs are shaped
so that the tripod shall fold up compactly and be convenient for carrying. The
camera is to be attached to the top of the tripod by the ordinary screw method or
by means of a ball and socket joint with clamping screw. The ball and socket joint.
gives freedom for easily levelling the camera. For the sketching easel the ball
and socket joint is arranged for carrying the support for the artist's canvas so as to
allow the canvas to be readily adjusted to any convenient position.
Dated this 9th day of September 1890.
BOTTOMLEY & LIDDLE,
154, St. Vincent Street, Glasgow, Applicant's Agents.
COMPLETE SPECIFICATION.
Improvements in Tripod Stands.
I, ELIZABETH THOMSON, of 2 Florentine Gardens Hillhead, Glasgow, in the
County of Lanark North Britain, Artist, 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 :-
My invention relates to an improved stand and is specially applicable to cameras
or sketching easels. The advantages are lightness, compactness, and the case with
which the length of the legs can be adjusted.
The stand consists of a tripod with legs elongating by sliding motion for easy
adjustment, for height of camera, or for uneven ground. When adjusted to the
proper length the sliding motion is prevented by wedge joints. The legs are
shaped so that the tripod shall fold up compactly and be convenient for carrying.
The camera is to be attached to the top of the tripod by the ordinary screw method,
or by means of a ball-and-socket joint with clamping screw. The ball-and-socket
joint gives freedom for easily levelling the camera. For the sketching easel the
ball and socket is arranged for carrying the support for the artist's canvas so as to
allow the canvas to be readily adjusted to any convenient position.
In order that my invention may be properly understood and readily carried into
effect I have hereunto appended two explanatory sheets of drawings, in the several
figures of which corresponding parts are marked with the same letters of reference.
Figure 1 is the tripod arranged for carrying a sketching easel.
Figure 2 shows the tripod for cameras folded up for carrying; and
Figure 3 is an enlarged section of part of one of the legs.
Each leg is made up of two pieces of wood a b. Each piece has a flat side, and
the two pieces forming one leg are placed with the flat sides together. There are
two metal bands c and d on each leg; one band c being screwed to one piece a,
while the other band d is screwed to the other piece b. These bands keep the two
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page_text: pieces together, and form guides in which they can be moved for lengthening or
shortening the legs. When the legs have been adjusted to any particular length
the sliding motion is prevented by the wedges e, shown more fully at Figure 3.
The wedges have metal pieces at the top e, which project out. through slots formed
in the top in tal piece is allow of the welges being pushed ho ne so as to jam the
two pieces firmly together and prevent sliding motion. The flat side of one of the
pieces a forming the log and the side of the wedge in contact with it should be
roughened while the other side of the wedge and the bevelled face at top of the
piece in contact with it should be smoother in order that the weight of the
camera te. may always tend to push the wedge in more firmly. The legs are
Linged to a top piece, the hinges being made so as to allow of the legs opening ont
a definite amount. The frame for carrying the easel or the camera may be attached
to the top of the tripod by a ball-and-socket joint. This is shown at Figure 1 for
the casel; but if the stand is intended for a camera the neck carrying the ball
would be made straight instead of bent as shown on the drawing. The camera may
be attached to the top of the stand by a screw in the ordinary method.
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 :-
The improved tripod stand having legs which are lengthened or shortened by
sliding motion and fixed in any required position by means of wedges, substantially
as described.
Datei this Rth dos T
BOTTOMLEY & LIDDLE,
154, St. Vincent Street, Glasgow, Applicant's Agents.