Improvements in Apparatus or Appliances for Crushing, Grinding, Triturating, Disintegrating, Reducing, or Preparing Fibrous Materials, or Mineral, Chemical, Oleaginous, or other Substances.
Year: 1886

page_text: Date of Application, 18th Nov., 1886.
Complete Left, 25th July, 1887.
Complete Accepted, 30th Aug., 1887.
Improvements in Apparatus or Appliances for Crushing, Grinding,
Triturating, Disintegrating, Reducing, or Preparing Fibrous
Materials, or Mineral, Chemical, Oleaginous, or other Substances.
I THOMAS ROUTLEDGE of Ford Works Sunderland in the County of Durham Paper
Manufacturer do hereby declare the nature of this invention to be as follows:-
This Invention has for its object to provide in apparatus employed for crushing
grinding triturating disintegrating reducing or preparing materials or substances,
appliances by which are obviated disadvantages which attend the use of ordinary
grinding triturating or disintegrating surfaces which constructed according to this
Invention may be kept in good condition without requiring the adjusting dressing or
sharpening which in many cases is necessitated with ordinary surfaces as now
employed.
According to this Invention the surfaces between which the crushing grinding
triturating or reducing is effected or one of such surfaces are or is formed of blades
plates or portions of hard material alternating with portions of softer material; for
example a hard metal alternating with a softer metal or with wood so that the softer
material will wear down below the harder material presenting a corrugated or uneven
surface by which the reducing or preparing action will be much facilitated.
Dated this 18th day of November 1886
J. HENRY JOHNSON,
47, Lincoln's Inn Fields, London, W.C.

page_text: Improvements in Apparatus or Appliances for Crushing, Grinding,
Triturating, Disintegrating, Reducing, or Preparing Fibrous
Materials, or Mineral, Chemical, Oleaginous, or other Substances.
1
I THOMAS ROUTLEDGE of Ford Works, Sunderland in the County of Durham
Paper Manufacturer do hereby declare the nature of this Invention which has been
communicated to me from abroad by Auguste Abadie of Angoulême in the Republic
of France Engineer and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement :-
This Invention has for its object to provide in apparatus employed for crushing
grinding, triturating, disintegrating reducing or preparing materials or substances,
applyances by which are obviated disadvantages which attend the use of ordinary
grinding triturating or disintegrating surfaces, which when constructed according to
this Invention may be kept in good condition without requiring the adjusting dressing
or sharpening which in many cases is necessitated with ordinary surfaces as now
employed.
According to this Invention the surfaces between which the crushing grinding
triturating or reducing is effected, or one of such surfaces are or is formed of blades
plates or portions of hard material alternating with portions of softer material for
example a hard metal alternating with a softer material such for example as wood,
tin, lead or zinc so that the softer material will wear down below the harder material
presenting a corrugated or uneven surface by which the reducing or preparing action
will be much facilitated.
And in order that the said Invention may be fully understood I shall now proceed
more particularly to describe the same and for that purpose will refer as an example
to the application of the Invention to the bed plate of edge runners employed for
pulping broke" papers and other fibrous material for paper making or to rollers or
surfaces used for preparing or treating fibrous substances generally.
66
Figure 1 is a vertical section and Figure 2 is a plan of the first mentioned
application from which the general application of the Invention will be understood, bare
ribs arranged as shewn in Figure 2 forming a number of compartments c these ribs
may be either fixed or moveable. In each of the compartments c are introduced a
number of blades d of metal or other hard material shewn as being straight and
continuous or unbroken in their length. The spaces between the blades d are filled
with strips or other forms of wood or metal or material softer than the material of the
blades d. The blades d may be the same width throughout as shewn on the left hand
side of Figure 1 or they may have distance pieces formed at their lower parts to
keep them in position as shewn at the right hand side of Figure 1 and in Figure 3
the spaces at being filled in with the softer material.
The surfaces formed as described will be effective for a long time without the
necessity for dressing or sharpening, which is necessary with the stone bed or

page_text: surfaces, and a further beneficial result is the facility with which the metal ribs and
blades of the bed plate or surface can be raised in case of wearing, this being a far
simpler operation than that of sharpening dressing or changing a stone bed or surface,
and finally the above described bed plate or surface with metal blades produces a fine
silky fibre in any case, and when employed for triturating mechanical or chemical
wood Pulps Esparto, straw, or cellulose in any form, or "broke" papers, produces an
opaque greasy and homogenous pulp which works well on the paper machine.
Having now particularly described and ascertained the nature of this Invention
and in what manner the same may be performed I declare that what I claim is :-
First In apparatus or appliances for crushing grinding triturating disintegrating
reducing or preparing fibrous materials or mineral chemical oleagineous or other
substances the construction of one both or all of the operating surfaces of blades
plates or portions of hard material alternating with softer material substantially as and
for the purposes hereinbefore described.
Second In apparatus or appliances for crushing grinding triturating disintegrating
reducing or preparing fibrous materials or mineral chemical oleagineous or other
substances the construction of one or both of the operating surfaces or the bed plate
of straight and continuous hard blades or plates without break in their length
alternating with softer material substantially as and for the purposes hereinbefore
described.
Third The construction of operating surface or surfaces or the bed plate for the
purposes described consisting of hard material alternating with softer material and
arranged as hereinbefore described and illustrated in the accompanying drawings.
Dated this 25th day of July 1887