Improvements in and relating to Bolting Apparatus.
Year: 1896

page_text: Date of Application, 5th Nov., 1896-Accepted, 20th Mar., 1897
COMPLETE SPECIFICATION.
Improvements in and relating to Bolting Apparatus.
1, HERBERT JOHN HADDAN of the Firm of Herbert Haddan & Co. Patent
Agents, of 18, Buckingham Street, Strand, W.C. London Civil Engineer do
hereby declare the nature of this invention a communication to me from abroad
by Tomas Samora y Abelló of 6, Fuente San Miguel, Barcelona, in the Kingdom
of Spain, 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 improvements in bolting apparatus, and consists in
arranging the sieves so that during their work they describe trajectories in closed
curves traced in planes perpendicular to the planes of the sieves.
The position form and dimensions of these sieves may vary according to the
quantity and quality of the materials to be worked and the conditions with which
the work is to be effected. These sieves can be placed horizontally or incline.l.
and more or less separated one from the other. They carry all the accessories
necessary for performing their work for instance the partitions indispensable for
the working of the operations, the distributors etc.
In the annexed drawings is shown the bolting apparatus which may have
however different forms without varying substantially the machine.
Fig. 1 is a longitudinal view.
Fig. 2 is a front view.
Fig. 3 is a vertical projection showing the disposition of the sieves.
Fig. 4 is a plan of Fig. 3.
Fig. 5 is a detail of the mechanism, intended to beat the sieve cloth in order to
eliminate the materials which are worked and adhere on the said cloth and thus
hinder the work.
The bolter consists of a solid framing O in which is disposed a cross bar () :
carrying excentric mechanisms A operated by a rotary axle B on which are fixed
one or two fly wheels. In the drawing is shown one of these fly wheels A. The
ring of the said eccentrics A remains fixed in the under part of the box C which
carries the sieves as shown at M.
In II are arranged the sleeves intended to introduce the material which is to be
sifted.
The opposite part or the other extremity of the box which supports the sieves is
suspended by means of the tension rods F G the upper part of which carries a
loop traversed by a ring fixed on the upper framing of the machine: the other
extremity G carries a ring which turns freely on an axle fixed in the sieve box.
This arrangement has the advantage of avoiding the proppings which are often
used in old machines and which, instead of the drawing rods carry a double
mechanism of eccentrics similar to the mechanism A.
The sifted materials leave through the sleeves N.
As it happens very often that one wants to take one of the upper or under sieves.
away during work, the inventor uses a new device by means of which he avoids
taking the upper sieves away when one has to take off one placed underneath.
This device consists in arranging them in the form of slides in the general.
framing and constituting thus a kind of cupboard with corresponding doors; by
opening the latter one can take the desired sieve away by pulling and making it.
11

page_text: slide in its corresponding slide. This arrangement is shown in Figs. 3 and 4.
TTT are the slides with notches and M are the sieves which must slide in the
said notches.
This special arrangement of the sieves can be modified by arranging the
slides so that the sieves can be taken off from the front or the back or by the
other side.
The inclination of the drawing suspension rod F G can vary according to
necessity as well as the height of the sieve box where it is attached to the said
drawing rod.
The drawing rod F G might be replaced by a strap or other appropriate
arrangement.
In the under part of each sieve and with the object of avoiding the obstruction
of the sieve cloths, is arranged a beating apparatus, shown in Fig. in detail and
marked H Fig. 1. This mechanism consists simply of a crank axle R R with two
trunnions which can turn freely in their supports R' R' which are fixed on the
frames S S in the under part of each sieve.
By the movement of the sieves during work the crank R takes a free movement
of rotation and as the length of the crank is so calculated that the distance
between the axles and the under planes of the sieves is greater, the knee arbor
beats continually the bottom of the latter or beats rulers in wood or any other
material placed over the cloth in order to protect it.
Having now particularly described and ascertained the nature of this inven
tion and in what manner the same is to be performed I declare that what I
claim is :-
(1.) The improved bolting apparatus in which by means of eccentric mechanism
or a crank axle combined with a suspensory mechanism or with a double set of
eccentrics, movement of the sieves under curved trajectories are obtained.
(2.) The arrangement for sliding the sieves in and out thus enabling the under
sieves to be taken out of the machine without taking away the upper sieves.
(3.) The mechanism consisting of a crank which by means of the movement of
the sieves beats the bottom of the latter on rulers placed above for protecting the
cloths all substantially as illustrated and described.
Dated this 5th day of November 1896