A Connecting Device for Boards, or for Plates or Slabs of Paper Material, Metal, and the like.
Year: 1895

page_text: Date of Application, 15th Aug., 1895-Accepted, 21st Sept., 1895
COMPLETE SPECIFICATION.
A Connecting Device for Boards, or for Plates or Slabs of Paper
Material, Metal, and the like.
I, JOHAN ARADI, of Prakfali, Hungary, 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 :-
The connecting together of boards or of plates or sheets of metal,
and the like is mostly effected by means of nails, screws, tongues, or glueing, which
paper material
various means render it difficult to separate the parts from each other again, and
such separation can seldom be effected without injury. There exist however many
cases (such as for transportable huts) in which it is desirable to connect together
boards, sheets or plates of the above mentioned kind in such manner that they can
be readily and rapidly separated again without damage to the material, and be as
rapidly re-connected.
The present invention relates to a connecting device that possesses the above
mentioned properties, and it consists in attaching to the edges of the boards or
plates angle irons which are pressed firmly together by means of tubular springs
which are slid over them.
The accompanying drawing shews at Fig. 1 the cross section of a connecting
device constructed according to my invention; Fig. 2 is a separate view of the
tubular spring employed therefor.
As will be seen the edges of the boards or plates a, a, which butt against each
other have fixed thereon on each side, an angle iron b, the limbs of which are by
preference made to form an acute angle with each other as shewn.
A spring c, which is of the form of a slit tube, is slid over the projecting limbs
of the two opposite angle irons, and thereby presses the boards or plates firmly
together.
The spring is constructed of a tube, preferably of metal, such as steel, iron,
which has a longitudinal slit c. This slit c¹ can be made slightly undulating as
shewn.
This tubular spring c, when making the connection of the boards &c., is
slid end wise on to the angle irons, whereby the two sides of the spring will be
pressed somewhat apart and will thus be made to exercise a strong pressure upon
the angle irons.
For separating the connection the spring c is forced off the angle irons
longitudinally, whereupon the boards or plates can be detached from each other.
For uniting together two plates at an angle to each other, a single tubular
spring c can be employed in the manner shewn at Fig. 1.
The above described connecting device is also applicable for roof coverings in
which these are made of material in the form of slabs or plates.
Instead of fixing angle irons on the plates or slabs, the edges of these can be
bent up or moulded so as to form equivalent projecting parts, when they are of a
material that permits of this.
Having now particularly described and ascertained the nature of this inven-
ion and in what manner the same is to be performed, I declare that what I
laim is :-
:-
A device for rapidly connecting and disconnecting boards, plates, slabs and the
like consisting of angle irons b attached to the edges thereof, or of bent-un or

page_text: moulded projections on such edges and of a tubular spring c having a longitudinal
slit c', that is slid longitudinally over the angle irons or projections, substantially as
described.
1002
ABEL & IMRAY,
Agents for the Applicant.