An Instrument or Apparatus for Facilitating the Reading of Scales or Tables, and Scales or Tables for Use in Connection therewith.
Year: 1888

page_text: An Instrument or Apparatus for Facilitating the Reading of Scales
or Tables, and Scales or Tables for Use in Connection therewith.
I, HERBERT CHEESMAN, of the Hartlepool Ropery Company Limited, Hartlepool,
in the county of Durham, Manufacturer, do hereby declare the nature of this invention
to be as follows:-
My invention chiefly relates to an instrument or apparatus especially applicable
for use in connection with scales or tables for showing the working and breaking
strains of wire and other ropes of different sizes, their respective weights and other
particulars, and has for its chief object to provide means whereby all such particulars
relating to a rope of a given size may be ascertained at a glance. It is to be under-
stood however that my instrument is also applicable for use in connection with scales
or tables containing information relative to other articles or materials.
My improved instrument comprises a plate of sheet metal, cardboard or other
desirable material to one side of which is pivoted a disc also of sheet metal or other
suitable material.
In the portion of the said plate covered by the disc is formed a slit or opening and
upon the face of the disc adjacent to the plate is applied a scale, the marks or
indications upon which are placed in radial lines, so that, when the disc is turned, one
or other of the said lines of indications will appear through the said opening which is
so shaped as to show only one line of indications at a time.
All the particulars relating to a particular article or class of goods are placed in a
single line so that when the disc is turned to the required point all the information
contained by the table relating to the particular goods or articles referred to will be
exposed through the said opening.
If desired I can arrange all the information relating to particular goods or articles
in a diametric line in which case two slots or openings are formed in the plate on
opposite sides of the pivot.
The particulars which enable the different figures or other indication of a line or
column to be distinguished one from another are placed or marked at the sides of the

page_text: If only a single opening is formed in the plate, it is obvious that the disc may turn
entirely round, by means of a stud attached to its pivot. If, however, two openings
are formed the disc must not turn through more than half a revolution. In the
latter case the disc may, if desired, be operated by means of a knob or finger attached
thereto and projecting through a slot formed in the plate concentric with the pivot
of the disc.
The marks, for instance the figures representing different sizes of wire rope, may
be arranged in conjunction with the said concentric slot in such a manner that when
the said finger or knob is moved to point to a particular figure all the information
contained by the table relating to a rope of the size indicated will appear opposite to
the slot or slots in the plate.
I can if desired place the discs between two plates each of which may be provided
with one or more openings, and the disc may be provided with a scale or table on
each side.
1 1
G. F. REDFERN & Co..
4, South Street, Finsbury, London,
Agents for the Applicant.

page_text: An Instrument or Apparatus for Facilitating the Reading of Scales
or Tables, and Scales or Tables for Use in Connection therewith.
.1, HERBERT CHEESMAN, of the Hartlepool Ropery Company Limited, Hartlepool,
in the county of Durham, Manufacturer, 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 chiefly relates to an instrument or apparatus for use in connection
with scales or tables for showing the breaking strains of wire and other ropes
of different sizes, their respective weights and other particulars; and has for its
chief object to provide means whereby all such particulars relating to a rope of
a given size may be ascertained at a glance. It is to be understood however
that my instrument is also applicable for use in connection with scales or tables
containing information relative to other articles or materials.
In the accompanying drawing,
Figure 1 is an elevation of my improved instrument.
Figure 2 is a vertical section of the same; and,
Figure 3 is a view of a portion of the same detached.
My improved instrument comprises a sheet a of cardboard, metal or other
desirable material having within it a circular recess b, within which is pivoted a
disc c also of cardboard or other material.
In the portion of the said plate adjacent to the disc are formed slots or
openings d, d, d, on opposite sides of the plate, and upon the faces of the
disc are series of marks or indications placed in radial lines, as shown in Figure 3;
so that, when the disc is turned, the two diametrically opposite radial lines of
indications upon the two sides of the disc will appear through the openings d, d; d¹,
which are so shaped as to show only one line of indications at a time.
d'
All the particulars relating to a particular article or class of goods are placed
in a single line, so that when the disc is turned to the required point all the
information contained by the table relating to the particular goods or articles
referred to will be exposed through the said opening. As shown in the drawing
the scale is adapted to show on one side the breaking strains of round or compound
ropes made of wire of various tensile strains per square inch. In this case the
figures indicating various sizes of ropes are arranged around the margin of the
visible portion of the disc, as shown in Figure 3, and the various particulars
relating to the respective ropes are placed in adjacent radial columns. The other
side of the table may be marked for flat ropes. In Figure 1 the disc is
represented as being placed in such a position that the information relative to
three and five inch round and compound ropes respectively is visible through the
openings d, d¹.
The particulars which enable the different figures or other indication of the disc
to be distinguished one from another are placed or marked at the sides of the
openings on the sheet a.

page_text: It is obvious that instead of forming two openings in each side of the sheet a, either
one or any other suitable number of openings may be formed thereon; and also that
instead of placing the disc in a recess it can be simply pivoted to one side of the
sheet or card.
e, e are notches which are formed in the side of the plate a to enable the disc to be
rotated by the fingers.
If it is not necessary to turn the disc through more than half a revolution, which is
the case with the disc shewn, the said disc may be operated by means of a knob or
finger attached thereto and projecting through a slot formed in the plate concentric
with the pivot of the disc, as indicated by the dotted lines in Figure 1.
The marks, for instance, the figures representing different sizes of wire rope may
in this case be arranged in conjunction with the said concentric slot, in such a
manner that when the said finger or knob is moved to point to a particular figure all
the information contained by the table relating to a rope of the size indicated will
appear opposite to the slot or slots in the plate.
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. An instrument or apparatus for facilitating the reading of scales or tables,
comprising a plate or sheet and a disc pivoted thereto, the said disc having marked
or printed in radial or diametric lines upon its surface scales or tables adapted to be
read through one or more openings formed through the said plate or sheet,
substantially in the manner described.
2. The manufacture and use of the improved instrument or apparatus, substantially
as herein before described with reference to the accompanying drawing.
T
11
00 1 1
1000
G. F. REDFERN & Co.,
4, South Street, Finsbury, London,
Agents for the Applicant.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London,
Agents for the Applicant.