Improvements in the Construction of Rolls for the Manufacture of Iron or Steel Wedge Packing, such as is used in 'Shipbuilding, which Improvements are also applicable for, the Manufacture of Pricker Blades to be used for Stoking between the Bars of Steam-boiler Furnaces.
Year: 1889

page_text: Date of Application, 7th Oct., 1889
Complete Specification Left, 7th July, 1890-Accepted, 4th Oct., 1890
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Rolls for the Manufacture of
Iron or Steel Wedge Packing, such as is used in 'Shipbuilding,
which Improvements are also applicable for, the Manufacture
of Pricker Blades to be used for Stoking between the Bars of
Steam-boiler Furnaces.
I, WILLIAM ARMSTRONG, of 18 Cromwell Terrace, Belle Vue, West Hartlepool, in
the County of Durham, Blacksmith, do hereby declare the nature of this invention to
be as follows:-
11
My invention relates to the construction of rolls for the manufacture of iron or steel
wedge packing such as is used in shipbuilding or the like purposes, in which the said
packing is required to be single or double tapered with or without feather edges or
for the manufacture of pricker blades to be used for stoking between the bars of
steam boiler furnaces or for similarly constructed articles.
The object of my invention is to construct rolls which will produce the requisite
variety of shapes required in wedge packing used in shipbuilding or in pricker blades
and similar specially shaped articles, the said rolls being so constructed that a bar
of iron or steel on being passed through the rolls is rolled to the required shapes or
patterns and are nicked off clean to length. The time and labour occupied in such
operations when carried out according to my invention is greatly reduced as compared
with the present mode of manufacturing similar wedge shaped packing.
In carrying my invention into effect, I will first refer to rolls to be used in the
manufacture of wedge. packing which I construct in pairs which may be rotated by
the application of any suitable and available power. The bottom rolls in this case
preferably take the flat or level side of the wedge packing and the top rolls similarly
take the inclined or tapered side thereof. The bottom rolls are therefore made up of
a series of sections which are true circles of different diameters so as to form a series
of "gates" with the corresponding top roll sections. Bars of iron or steel on being
passed through the rolls are reduced to wedge packings of different dimensions and
shapes according to the formation of the various sections of the top roll.
Thus for instance to roll single tapered wedges the configuration of the roll section
is a spiral curve with its ends united by a straight line; the radial distance between
the two ends of this spiral curve, represents the thickness of the thick end of the
wedge. The abrupt termination of the spiral curve forms a sharp edge which nicks
off the wedge clean to length at the thin end; the greater the length in the periphery
of the roll section the longer the wedge. In order to produce double tapered wedges,
the configuration of the top roll section is that of an oval or approximate form, the
difference between the two axes of which corresponds to the thick part of the wedge;
to provide sharp edges to nick the wedges clean to length at each end; two V shaped
notches are formed at opposite parts of each roll section where the axis is longest.
The edges of the wedges can be feathered or not by bevelling the surface of the roll
sections or leaving it perfectly level.
If the wedges are to be tapered on both sides the bottom roll section must be the
same in the periphery as the top roll section and must also be bevelled in a manner
similar to the top roll section to produce a similar feather edge on the other side of
the wedge packing.
In constructing rolls for rolling the pricker blades used for stoking between the
bars of steam boiler furnaces which pricker blades are tapered and feathered on both
sides and furnished with a tongue or tenon also tapered on both sides by
which it is secured to the pricker bar. I. obtain the taper and feather edge
precisely by the same means as hereinbefore described with reference to a single
tapered and feather edged wedge except that the bottom roll section is similar to the
top roll section instead of being flat or level, but in order to enable the rolls to. also
[Pi]

page_text: roll out the tongue or tenon I groove out the periphery of the roll to a distance equal
to the length of the tongue and of the same width, the groove is also tapered to
correspond with the taper of the tongue or tenon and terminates abruptly by which
a sharp edge is furnished on either side of the groove which cuts the pricker blade at
the shoulders clean to length. The thin end of the blade is also nicked off to a point
instead of straight across owing to the surfaces of the roll sections being bevelled
instead of flat or level. It is obvious that the rolls may be constructer of other
configuration and grooved or otherwise shaped crosswise of the roll section in a variety
of ways without departing from the nature of my invention by which means other
specially formed articles may be similarly manufactured.
G. J. CLARKSON,
Stockton-on-Tees, Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in the Construction of Rolls for the Manufacture of
Iron or Steel Wedge Packing, such as is used in Shipbuilding,
which Improvements are also applicable for the Manufacture
of Pricker Blades to be used for Stoking between the Bars of
Steam-boiler Furnaces.
1, WILLIAM ARMSTRONG, of 18, Cromwell Terrace, Belle Vue, West Hartlepool, in
the County of Durham, Blacksmith, do hereby declare the nature of this invention
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 construction of rolls for the manufacture of iron or
steel wedge packing such as is used in shipbuilding or the like purposes, in which the
said packing is required to be single or double tapered with or without feather edges,
or for the manufacture of pricker blades to be used for stoking between the bars of
steam boiler furnaces or for similarly constructed articles.
The object of my invention is to construct rolls which will produce the requisite
variety of shapes required in wedge packing used in shipbuilding or in pricker blades
and similar specially shaped articles, the said rolls being so constructed that a bar of
iron or steel on being passed through the rolls is rolled to the required shapes or
patterns which are nicked off clean to length. The time and labour occupied in such
operations when carried out according to my invention is greatly reduced as compared
with the present mode of manufacturing similar wedge shaped packing.
In carrying my invention into effect I construct the rolls in pairs which may be
rotated by the application of any suitable and available power. The bottom rolls are
preferably true circles when the wedges have a flat side, but may be grooved and
tapered as required for the manufacture of feather edged wedges or pricker blades, so
that the bottom and top rolls form a series of "gates" through which are passed bars
of iron or steel.
And in order that my invention may be fully understood and readily carried into
effect I will now proceed to describe the same with reference to the accompanying
drawings, in which
Figure 1 illustrates in sectional elevation rolls constructed for rolling out single
and double tapered wedge packings, pricker blades, and other similar specially shaped
articles.
Figure 2 is a transverse section of a pair of rolls for rolling out single tapered
wedges taken on line W W of Figure 1.
Figures 3 and 4 are transverse sectional views of a pair of rolls for rolling out
double tapered wedges taken on line X X of Figure 1.
Figure 5 is a transverse section of a pair of rolls for rolling pricker blades taken on
line Y Y of Figure 1..
Figure 6 is a sectional view of the top roll taken on line Z Z of Figure 5; and
Figure.7 is a plan view showing the form of a pricker blade as manufactured
according to my invention.
IN

page_text: It will be readily understood that the particular arrangement of the rolls as
illustrated in Figure 1 is not essential to my invention, but has been selected in order
to include in one mill an illustration of the formation of the rolls to be employed in
manufacturing wedge packings and pricker blades of the shapes and patterns most in
use, and mills can be constructed with rolls to manufacture only single tapered wedge
packings, or only double tapered wedge packings, or only pricker blades, or be
otherwise arranged to suit a special purpose without departing from the nature of my
invention.
In order to produce single tapered wedges, the configuration of the top roll a in
Figures 1 and 2 is a spiral curve with its ends united by a straight line; the radial
distance between the two ends of the spiral curve represents the thick end of the wedge as
shown more particularly in Figure 2. The abrupt termination of the spiral curve
forms a sharp edge or notch a' which nicks off the wedge clean to length at the thin
end; the greater the length in the periphery of the roll section the longer the wedge,
and the less the radial distance between the ends of the curve the less the taper of the
wedge. In Figures 1, 3 and 4, which illustrate a pair of rolls for producing double
tapered wedges, the configuration of the top roll bis that of an oval or approximate
form, the difference between the two axes of which corresponds to the thick part of
the wedge, and in order to produce sharp edges to nick the wedges clean to length at
each end two V shaped notches are formed at opposite parts of each roll section
where the axis is longest. If desirable the edges of the wedges can be feathered by
bevelling the surface of the top roll as shown in roll c in Figure 1; or if the wedges
are to be feather edged with an equal taper on both sides, the bottom roll must be
the same in the periphery as the top roll as illustrated in rolls dd' in Figure 1.
Another formation of the rolls is illustrated in Figure 1, in which the top roll e and
bottom roll e¹ are correspondingly bevelled so as to produce a tapered wedge packing
of a triangular section.
Figures 1, 5 and 6 illustrate the construction of rolls for rolling the pricker bladesf
used for stoking between the bars of steam boiler furnaces, which pricker blades are
tapered on both sides and feathered on both edges and are furnished with a tongue or
tenon y also tapered on both sides by which it is secured to the pricker bar as
illustrated in Figure 7. I obtain the taper and feather edge precisely by the same means
as herein before described with reference to a single tapered and feather edged wedge by
constructing the bottom roll d¹ similar to the top roll d instead of being flat or level;
but in order to enable the rolls to also roll out the tongue or tenon 9 I groove out the
periphery of the top roll d to a distance equal to the length of the tongue and of the
same width, the groove is also tapered to correspond with the taper of the tongue or
tenon and terminates abruptly by which a sharp edge his furnished on either side of
the groove which cuts the pricker blade at the shoulder clean to length. The thin end
of the blade is also nicked off to a point instead of straight across owing to the bevelled
surfaces of the roll sections meeting at the required angle.
It is of course obvious that the rolls may be constructed of other configuration and
grooved or otherwise shaped crosswise of the roll in a variety of ways without departing
from the nature of my invention by which means other specially formed articles may
be similarly manufactured.
Having now particularly described and ascertained the nature of my said invention,
and in what manner the same is to be performed, 1 declare that what I claim is :-
:-
In the manufacture of iron or steel wedge, packing, pricker blades, and the like
specially shaped articles, the employment of specially constructed rolls for rolling the said
articles and nicking them off clean to length, substantially as and for the purpose as
hereinbefore described with reference to the accompanying drawings.
Dated this 5th day of July
SU
Uated this 5th day of July LOSU.
G. J. CLARKSON,
Stockton-on-Tees, Agent for the Applicant.