Year: 1886

page_text: I GEORGE FREDERICK REDFERN, of the General Patent Office, N° 4, South
Street, Finsbury in the county of Middlesex, Patent Agent do hereby declare the
nature of this invention (a communication from abroad by Carl Klammt of Stettin
Engineer and Brierck and Hubner of Mannheim Machine makers both in the
Empire of Germany) 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 the construction of an improved portable stone breaking
machine and in order to enable the invention to be fully understood I will describe.
the same by reference to the accompanying drawing in which figure 1 represents
a side elevation, figure 2 an end elevation and figure 3 a plan of a portable stone
breaking machine constructed according to this invention.
The improved machine serves for the manufacture of metal or stones for roads,
railways and other similar purposes and possesses the advantage over stone
breaking machines as heretofore constructed that not only the stone breaker but
also the sorting and delivering apparatus connected therewith are portable, these
apparatuses being mounted together upon a carriage frame or truck so that they
can be driven from one stone heap to the other by a portable steam engine, whilst
they are actuated by a belt passing over the fly wheel of the said engine.
In ordinary portable stone breaking machines the sorting sieve has to be
mounted each time it is required for use and owing to its being placed below
the casing of the crusher the stones do not fall directly upon a truck or cart but
have to be thrown thereon by means of a shovel. Moreover the stone breakers
generally in use can only be fed by hand which is a great defect as heavy stones
have sometimes to be raised to a great height.
The said defects are obviated by this improved machine which is constructed as
follows:-
Upon a strong iron carriage frame or truck a, provided with broad wheels b,
and a brake c, is mounted a stone breaking machine d. The latter is fed with

page_text: stones of large size by means of a steel wire travelling band e, provided with cross
rails screwed thereon. The stones are simply placed upon this band e, and fed by
the latter into the stone breaking machine. Below and at the side of the said
machine is placed the bucket box or receiver h, of an elevator i, into which the
broken material falls as it comes from the stone breaking machine. This elevator i,
serves to raise the broken stones and to throw them into a shoot (not shewn in
the drawing) which conveys them into a sieve or sorter k, of peculiar construction.
This sieve is composed of several perforated and circular sieve plates k¹, k, k
over which are fixed non perforated sheet metal plates 11, 111, 11, also circular.
The broken stones or metal fall in the direction of the arrow. o, figure. 2 upon the
sieve plate k¹, the perforations of which are the smallest, from which the material
is conveyed onto the sheet metal plate l¹, whence it passes in the direction of the
arrow, through an iron shoot (not shewn in the drawing) and finally falls into a
truck or cart placed below the said shoot. The coarser metal falls through the
perforations of the sieve plate k¹¹, onto the circular sheet iron plate ", and travels
in the direction of the arrow 2 through a lateral tube or shoot and finally falls into
another truck or cart placed below the said shoot. The coarsest metal falls onto
the sieve plate ¹¹, and then onto the sheet metal plate 1, whence it is conveyed
in the direction of the arrow through a shoot (not shewn in the drawing) to a
truck or cart placed below the said shoot. The material which is too coarse to
pass through the last named sieve falls in the direction of the arrow 4, as will be
easily seen, onto the travelling band e, which conveys it back to the stone breaking
machine d, in order to be further broken.
The stones are thus broken in an entirely automatic manner, the large stones
having only to be placed upon the travelling band while the broken metal is
delivered and classified as follows:-
1. Dust.
2. Fine metal and
3. Coarse metal which are forthwith conveyed to the trucks or carts arranged in
their respective places.
4. Material which is too coarse for use and which is returned automatically to
the stone breaking machine.
The circular sheet metal plates (1, 111, 1111, are necessary in order to convey the
broken metal away sideways so that it shall reach the trucks or carts which can
only be placed as above mentioned and so that it shall not fall upon the travelling
band which is arranged below the sieve.
Motion is communicated by the belt of the portable engine which actuates the
machine, this belt driving the stone breaker by means of the pulley m. On one
side of the stone breaker shaft is arranged a chain friction wheel n, which
communicates motion to a shaft o. The latter carries on one side a toothed
wheel p, which gears with another toothed wheel r, mounted upon the shaft
the elevator.
of
Motion is communicated to the sieve by means of chain wheels 8, and t, while
the travelling band e, is actuated by chain wheels v, and w.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
1. A portable stone breaking machine consisting of a stone breaker, a travelling
band which serves to convey to the stone breaker the stones thrown or fed thereon,
an elevator which lifts the broken stone up to a sorting sieve and a conical
rotating sorting sieve (from which the stones fall directly into a truck or cart) the
said parts being mounted upon a frame carried on wheels substantially as herein-
before described.
2. In a stone breaking machine the herein described arrangement of travelling
band, consisting of a steel wire band e, provided with cross rails screwed thereon
in such a manner that the stones fed onto the lower end thereof are conveyed to

page_text: the stone breaker substantially as herein before described and represented in the
accompanying drawing.
3. In a stone breaking machine the herein described arrangement of conical
sorting sieve placed at a suitable height and consisting of curved perforated sieve
plates k; k, l, which are surrounded by curved non-perforated plates the whole
being mounted upon a shaft x, figure 2 for the purpose of shaking the stones out
of the sorting sieve so as to enable them to reach the trucks or carts employed to
transport them substantially as hereinbefore described and represented in the
accompanying drawing.