An Improvement in Holders for Chalks and other Writing and Drawing Materials.
Year: 1896

page_text: Date of Application, 14th Sept., 1896
Complete Specification Left, 2nd June, 1897--Accepted, 17th July, 1897
An Improvement in Holders for Chalks and other Writing and
Drawing Materials.
I, JOHN OPIE (Schoolmaster) Trelissick Road Hayle Cornwall do hereby declare
the nature of this invention to be as follows:-
This invention relates principally to a holder for Chalks of the tapering kind
used in Writing and Drawing on Black Boards, but is also applicable to other
Writing and Drawing Materials.
A tubular Case of metal, or metal suitably lined, is made in two parts
longitudinally, hinged to each other at a short distance from the hinder end, and
having a spring acting on two of its opposite sides. The spring may be placed
either before or behind the hinged joint and will be in tension or compression
accordingly. The case is square or polygonal in Cross-section. The pin-holes at
the joint are elongated in a direction along the cross-section of the holder, and the
front end of the holder has each of its arrises cut and the remaining material of the
sides sprung inwards.
The combination of parts described above provides :-
i a ready means of allowing the chalk to be inserted, advanced or withdrawn,
the front end opening on the application of pressure at the hinder end.
ii a sufficient grip between the chalk, and the inside of the holder owing to the
numerous points where the chalk and the material of the holder are in contact.
In the Drawing:
Fig. 1 and Fig. 2 are longitudinal views.
Fig. 3 is a section through the body of the holder.
Fig. 4 is a section through the hinged joint.
Sp is the spring referred to.
Ch is the chalk.
Cl, E and E, are a clip and screw-eyes respectively for attaching the holder to
the easel when not in use.
Dated this 12th day of September 1896.
COMPLETE SPECIFICATION.
An Improvement in Holders for Chalks and other Writing and
Drawing Materials.
I, JOHN OPIE Trelissick Road Hayle Cornwall (Schoolmaster) 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 a holder for Chalks and other Writing and Drawing
CD: 071

page_text: Materials. A tubular case of metal, or of metal suitably lined, is made in two
parts longitudinally, hinged to each other at a short distance from the hinder end,
having a spring acting upon two of its inner opposite sides. The pin-holes at the
joint are elongated along a Cross-section of the holder, and the front end of the
holder is tapered somewhat. The pin may be dispensed with if desired. This
construction provides
i. A means of allowing the chalk to be inserted, advanced or withdrawn, the
front end opening on the application of pressure at the hinder end.
ii. A sufficient grip between the chalk and the inside of the holder, owing to the
numerous points where the holder and the chalk are in contact.
In the accompanying Drawing:-
Fig. is a longitudinal view.
Fig. II is a longitudinal view with the parts separated.
Fig. III is a Cross-section of the several parts which are shown in Fig I connected
by rivets.
Fig. IV shows a cross-section through the hinged joint.
Sp is the spring, Ch is the chalk, P is the pin, Cl, E and E are a clip and
screw-eye for attaching the holder to the easel when not in use.
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,
In holders for chalks, and the like, a tubular case divided longitudinally, hinged
and connected with a spring, capable of receiving and holding the Chalk, substantially
as described.
T
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