INSTRUMENT FOR ISOLATING ROWS OF PRINTED MATTER FOR READING

• US 3,739,739 A
• Filed: 08/24/1972
• Issued: 06/19/1973
• Est. Priority Date: 08/24/1972
• Status: Expired due to Term

• Current Assignee: Roy J. Brase
• Original Assignee: Roy J. Brase
• Inventors: Brase, Roy J.
• Primary Examiner(s): Capozi, Louis J.
• Application Number:
  US05/283,276
• Time in Patent Office: 299 Days
• Field of Search: 116/114,119,135 35/2 40/352 281/42,45 283/65
• US Class Current: 116/240
• CPC Class Codes: B42D 9/008 Devices for indicating a spot on a sheet B42D9/001 takes precedence

Abstract

An instrument for use in quickly and accurately isolating each of separate straight lines of printed symbols such as letters or numerals or both, and increasing their clarity for reading in which a pair of parallel, spaced strips or lines midway between the opposite planar sides of flexible transparent material is positioned to define an elongated, clear, colorless, transparent band in the strip between said lines within which the printed symbols of one of said lines of printing are isolated for reading when said instrument is laid flat on the sheet with the line of printed symbols to be examined positioned between said straight lines of said pair.

Claims

1. An instrument for use in isolating any one row of symbols from other rows thereof imprinted on a planar sheet with said rows equally spaced from each other in parallel side-by-side relation comprising:

a. a strip of flexible, transparent material of uniform thickness having a first straight edge extending longitudinally thereof and planar opposite surfaces;

b. said strip having a straight, clear band parallel with and spaced from said one edge of a width slightly greater than the maximum height of the symbols of said rows and less than the distance between alternate rows for observation of one of said rows through said band when said strip is positioned flat on such sheet with a row of said symbols below said band;

c. said strip including one continuous portion thereof respectively extendinG between said band and said one edge and a second continuous portion extending away from said band at the side thereof opposite said one edge;

d. a planar, transparent, light, uniform tint spaced between and parallel with said planar opposite surfaces within and substantially coextensive with said areas distinguishing said band from the said areas; and

e. a pair of parallel stripes spaced within said strip and respectively positioned along opposite longitudinally extending edges of said band, said stripes being of a deep value relative to the value of said tints to define junctures between said tint and said band, whereby any one of said rows of symbols when positioned below said band will be clearly visually isolated from adjacent bands while the symbols in the adjacent bands may be read when said strip is positioned flat on said strip with a row of said symbols below said band.

2. In an instrument as defined in claim 1:

f. said stripes being of equal width and which width is a relatively small fractional part of the width of said band; and

g. said first portion being relatively narrow to facilitate locating the row of symbols to be positioned below said band; and

h. said second portion being substantially wider than said first portion to provide a finger engaging surface for moving said strip on said sheet transversely of said rows free from interference with the sight of the operator.

3. In an instrument as defined in claim 2:

i. said strip having a second straight edge parallel with and opposite to said first edge;

j. a second clear band in said strip spaced from said second edge approximately the same distance said first mentioned band is spaced from said first edge;

k. said tint in said second portion extending substantially to one edge of said band and a corresponding tint being within said strip between said second band and said second edge;

l. said second band being double the width of said first band to enable isolating any one of conventional double-spaced rows of conventionally printed symbols when one of such rows is positioned below said second band;

m. a pair of parallel stripes spaced within said strip respectively positioned along opposite longitudinally extending edges of said band, said stripes having substantially the same value and width as the value and width of said first mentioned stripes.

4. In an instrument as defined in claim 1:

a. the tinting within said portions and said stripes being midway between the planar sides of said strip whereby a row of symbols when positioned below said band will be viewed with equal clarity irrespective of which of said opposite planar surfaces is against said sheet.