Improvement in Rag Engine Bottom or Bed Plates.
Year: 1899

page_text: Improvement in Rag Engine Bottom or Bed Plates.
I, JOHN WALTER HACKING, of the Carr Vale Works, Darwen, in the County
of Lancaster, Mechanical Engineer, do hereby declare the nature of this inven-
tion to be as follows: :―
My invention relates to the bottom or bed plates used in rag engines and
consists in an improved construction of the same.
My improvement consists in making the bars of the said plates both corru-
gated in edge view and reversible so that they can be used alternately as cutters
and dividers. For this purpose, all the bars are made of steel or other suitable
metal, and every alternate bar, say the 2nd, 4th, 6th, and so on, is drilled with
two bolt holes for each of the bolts holding the bars together, which bolt holes
are at the same distance from the bottom edge of the bars and some distance
apart in the longitudinal direction of the bars. The other bars, the 1st, 3rd, 5th
and so on, are likewise drilled with two bolt holes for each bolt, one of which
holes coincides with the holes in the even numbered bars, while the other is at the
same horizontal distance from the first as the second hole in the even numbered
bars but at a greater distance from the bottom edge.
At the start these odd numbered bars are made of greater depth than the even
numbered plates and when bolted together with them through the bolt holes
equidistant from the bottom stand up above them and form the cutters, the
other bars serving as dividers. When these cutters have been worn down to near
the top of the dividers, the bolts are drawn out and passed through the sets of
holes having different distances from the bottom, and the top edges of
numbered bars are thereby lifted above those of the odd numbered bars and
now serve as cutters, while the others form the dividers. When these cutters
are worn off, the bolts are returned to their original positions, whereby the odd
numbered plates are raised up above the others, and so on till the bars are
completely worn out.
even
In combination with this the well known advantage of having the edges of
the cutters inclined is obtained by corrugating the bars, by which the driving
of the ground stuff to the sides is also prevented.
Doted this w5th 2-
T
1000
Improvement in Rag Engine Bottom or Bed Plates.
I, JOHN WALTER HACKING, of the Carr Vale Works, Darwen, in the County
of Lancaster, Mechanical Engineer, do hereby declare the nature of this inven-
[Price 8d.1

page_text: tion 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 bottom or bed plates or blocks used in rag engines
and consists in an improved construction of the same.
On the drawing appended hereunto Figure 1 shows a plan and Fig. 2 an
end view of the plates bolted together, and Figures 3 and 4 side views of the
alternate bars composing the block of plates.
My improvement consists in making the bars of the said plates or blocks both
corrugated in edge view and reversible so that they can be used alternately as
cutters and dividers. For this purpose, all the bars are made of steel or other
suitable metal, and every alternate bar b say the 2nd, 4th, 6th and so on, is
drilled with two bolt holes c d Fig. 4 for each of the bolts e holding the bars
together, which bolt holes are at the same distance from the bottom edge of the
bars and some distance apart in the longitudinal direction of the bars. The
other bars a, the 1st, 3rd, 5th and so on, are likewise drilled with two bolt
holes f, h, for each bolt, one of which holes f coincides with the holes in the
even numbered bars, while the other his at the same horizontal distance from f
as the holes d are from the holes c in the bars b, but at a greater distance from
the bottom edge.
At the start the odd numbered bars a are made of greater depth than the
even numbered bars band when bolted together with them through the bolt
holes and equidistant from the bottom, stand up above them and form the
cutters, the other bars serving as dividers. When these cutters have been worn
down to near the top of the dividers, the bolts are drawn out and passed through
the sets of holes d'and h having different distances from the bottom, and the
top edges of even numbered bars 6 are thereby lifted above those of the odd
numbered bars a and now serve as cutters, while the others form the dividers.
When these cutters are worn off, the bolts are returned to their original posi-
tions, whereby the bars a are raised up again above the others, and so on till the
bars are completely worn out.
In combination with this advantage the well known advantage of having the
edges of the cutters inclined is obtained by corrugating the bars, whereby the
driving of the ground stuff to the sides is also prevented.
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. The construction of bottom or bed plates for rag engines substantially as
herein before described and illustrated by the drawings.
2. The formation of the bottom or bed plates of rag engines of corrugated
bars drilled alternately with two holes at the same distance from the bottom
and two holes at different distances from the bottom for each of the bolts holding
the wars together, substantially as and for the purposes hereinbefore described
and illustrated by the drawings.
Dated the 95th dor of Mar 1000
R. J. URQUHART, C.E.,
Chartered Patent Agent, Manchester & Liverpool.