IMPROVE- MENTS IN APPARATUS FOR BREAKING OR CRUSHING ORES OR OTHER HARD SUBSTANCES
Year: 1884

page_text: I THOMAS ARCHER Junior of Dunston Engine Works Gateshead on Tyne
Engineer do hereby declare the nature of my said Invention for "IMPROVE-
MENTS IN APPARATUS FOR BREAKING OR CRUSHING ORES OR OTHER HARD
SUBSTANCES" to be as follows:―
My invention relates to the class of breakers or crushers wherein a moveable jaw
is vibrated in proximity to a fixed jaw for the purpose of crushing the substances
fed between them-According to my Invention I suspend the moveable jaw upon
an axis so that it can be vibrated thereon which vibration is effected by a lever
mounted upon an axis at one end and at or towards the other end bearing upon a
cam surface (with any suitable number of "rises") carried by the main shaft of
the machine the part of the said lever bearing upon the said cam surface being
preferably provided with a removeable wearing part or with an antifriction rolling
surface A toggle or thrust piece is interposed between the back of the moveable
jaw and the front of the said lever to convey motion from the lever to the said jaw.
The return motion of the moveable jaw is ensured by a rod, and springs in the
ordinary way but in order to prevent the nuts at the end of the rod (by which
nuts the springs are secured thereon) working loose I use a weighted lever or handle
or its equivalent attached to the nuts or one of them so that the weight thereof
keeps the nut or nuts from turning and working loose. The adjustment of the jaws
for working can be readily effected by inserting different thicknesses of "liners"
at the back of the removeable wearing part which bears on the cam or behind the
removeable crushing surface of the fixed jaws.
J. HENRY JOHNSON,
47, Lincoln's Inn Fields, London, W.C.,
Agent for the said Thomas Archer, Junior,

page_text: I, THOMAS ARCHER Junior of Dunston Engine Works Gateshead-on-Tyne
Engineer do hereby declare the nature of my invention for "IMPROVEMENTS
IN APPARATUS FOR BREAKING OR CRUSHING ORES OR OTHER HARD SUBSTANCES
"
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 the class of breakers or crushers wherein a moveable jaw
is vibrated in proximity to a fixed jaw for the purpose of crushing the substances
fed between the said jaws. I will describe my Invention with reference to the
accompanying drawing wherein Figure 1 is a side view partly in section and
Figure 2 is a transverse section on the line A. B. Figure 1 of a machine con-
structed according to my Invention. Figure 3 shews a modification as hereinafter
described. The framing C of the machine may be of any suitable character and
in it is supported the fixed jaw D The moveable jaw E is suspended upon an axis
or trunnions e in the framing C so that the said jaw E can be vibrated on the said
axis or Trunnions, the said vibration being effected by a lever F mounted at one
end upon an axis carried by the framing of the machine the other end of the said
lever bearing upon a cam or eccentric surface G carried by the main shaft H of
the machine The said cam surface is shewn in the drawing as being formed with
two rises so as to operate the lever twice during each revolution of the shaft H
but the said cam surface may have one rise only or more than two rises if desired-
The part of the lever F which bears upon the cam G is preferably provided with
a removeable wearing part f2 as shewn in figure 1 or with an antifriction roller
surface fs as shewn in Figure 3. A toggle or thrust piece I is interposed between
the back of the moveable jaw E and the front of the lever F to convey motion
from the lever F to the jaw E The return motion of the said jaw E is ensured
by a rod j and springs k in the ordinary way, but in order to prevent the nuts / at
the end of the rod j (by which nuts the springs & are secured on the said rod)
from working loose, I use a weighted lever or handle or its equivalent attached
to the nuts or one of them (as illustrated for example at m) so that the weight of
the said lever or handle or the like keeps the nut or nuts from turning and working
loose The adjustment of the jaws for working can be readily effected by inserting
different thicknesses of "liners" at the back of the removeable wearing part f³
which bears on the cam or behind the removeable wearing surfaces of the fixed
or moveable jaws.
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
First. In apparatus for breaking or crushing ores or other hard substances, the
combination with the jaws, between which the substances are crushed, of a lever
acted upon by a cam or eccentric surface, and operating the moveable jaw through

page_text: the intervention of a toggle substantially as hereinbefore described and illustrated
by the accompanying drawings.
Second. The arrangement and combination of parts constituting the apparatus
for breaking or crushing ores or other hard substances substantially as hereinbefore
described and illustrated in the accompanying drawings.
Dated this 13th day of February 1885
THOMAS ARCHER, JUNE.