Rule and compass device

Claim 1

A device comprising an elongated rule body, two relatively adjustable compass points carried by said body, a first slide element carrying one of said points and mounted by said body for sliding movement therealong and toward and away from the other of said points to vary the distance between the points; an elongated second slide element mounted by said body for longitudinal sliding movement relative thereto, and logarithmic slide rule scales on said body and said second slide element readable against one another to make a slide rule calculation, said second slide element having an elongated relatively narrow first portion slidably received within a guideway in said body, and an enlarged head portion carried by said narrower portion at a location beyond an end of said guideway and having a width greater than the narrower portion, said body having a straight edge along one side thereof with scale markings and adapted to be used in drawing a straight line, and said enlarged portion of the second slide element having a straight edge disposed perpendicular to said straight edge of the body and perpendicular to the direction of sliding movement of said slide elements and having scale markings.

Claim 2

A device comprising an elongated rule body, two relatively adjustable compass points carried by said body, a first slide element carrying one of said points and mounted by said body for sliding movement therealong and toward and away from the other of said points to vary the distance between the points; an elongated second slide element mounted by said body for longitudinal sliding movement relative thereto, and logarithmic slide rule scales on said body and said second slide element readable against one another to make a slide rule calculation, said second slide element having an elongated relatively narrow first portion slidably received within a guideway in said body, and an enlarged head portion carried by said narrower portion at a location beyond an end of said guideway and having a width greater than the narrower portion, said body having a straight edge along one side thereof with scale markings and adapted to be used in drawing a straight line, and said enlarged portion of the second slide element having a straight edge disposed perpendicular to said straight edge of the body and perpendicular to the direction of sliding movement of said slide elements and having scale markings.

Claim 3

A device comprising a body, means for mounting two compass points to said body for relative adjusting movement to draw or measure a circle having a radius corresponding to the distance between said points, said means including a slide element mounted to said body for relative sliding movement therealong and carrying one of said points to adjust the distance between it and the other point, a scale carried by said body having angle markings which indicate for a particular size circle the size of angle marked off on the circumference of said circle by said two points, additional scales on said body indicating the area of a circle having a radius or diameter corresponding to the spacing between said compass points at different settings thereof and indicating the circumference of a circle having such a radius, said body having a guideway slidably receiving said slide element, an elongated second slide element mounted slidably within said guideway, coacting logarithmic slide rule scales on said body and said second slide element, said compass point mounting means including a third slide element mounted slidably about and to said body and carrying said other compass point, said third slide element having a hairline indicator marking coacting with said slide rule scales, said second slide element having an enlargement extending beyond said guideway and said body and shaped to detachably carry said third slide element in an inactive position thereof, said body having a straight edge extending parallel to said guideway, and said enlargement having a straight edge extending perpendicular to said first mentioned straight edge and perpendicular to the guideway.

Claim 4

A device comprising a body, means for mounting two compass points to said body for relative adjusting movement to draw or measure a circle having a radius corresponding to the distance between said points, said means including a slide element mounted to said body for relative sliding movement therealong and carrying one of said points to adjust the distance between it and the other point, a scale carried by said body having angle markings which indicate for a particular size circle the size of angle marked off on the circumference of said circle by said two points, additional scales on said body indicating the area of a circle having a radius or diameter corresponding to the spacing between said compass points at different settings thereof and indicating the circumference of a circle having such a radius, said body having a guideway slidably receiving said slide element, an elongated second slide element mounted slidably within said guideway, coacting logarithmic slide rule scales on said body and said second slide element, said compass point mounting means including a third slide element mounted slidably about and to said body and carrying said other compass point, said third slide element having a hairline indicator marking coacting with said slide rule scales, said second slide element having an enlargement extending beyond said guideway and said body and shaped to detachably carry said third slide element in an inactive position thereof, said body having a straight edge extending parallel to said guideway, and said enlargement having a straight edge extending perpendicular to said first mentioned straight edge and perpendicular to the guideway.

Claim 5

A device comprising an elongated rule body, two relatively adjustable compass points carried by said body, a first slide element carrying one of said points and mounted by said body for sliding movement therealong and toward and away from the other of said points to vary the distance between the points; an elongated second slide element mounted by said body for longitudinal sliding movement relative thereto, logarithmic slide rule scales on said body and said second slide element readable against one another to make a slide rule calculation, a slide rule indicator element mountable slidably on said body for shifting movement therealong and having a marking simultaneously coacting with said slide rule scales on both said body and said second slide element, and means for attaching said indicator element in a predetermined inactive position to said second slide element.

Claim 6

A device comprising an elongated rule body, two relatively adjustable compass points carried by said body, a first slide element carrying one of said points and mounted by said body for sliding movement therealong and toward and away from the other of said points to vary the distance between the points; an elongated second slide element mounted by said body for longitudinal sliding movement relative thereto, logarithmic slide rule scales on said body and said second slide element readable against one another to make a slide rule calculation, a slide rule indicator element mountable slidably on said body for shifting movement therealong and having a marking simultaneously coacting with said slide rule scales on both said body and said second slide element, and means for attaching said indicator element in a predetermined inactive position to said second slide element.

Claim 10

A device comprising an elongated rule body containing an elongated guideway extending along a predetermined axis longitudinally within the body, an elongated slide stick mounted slidably within said guideway for longitudinal movement parallel to said axis, logarithmic slide rule scales on said body and said slide stick readable against one another to make a slide rule calculation, a cursor disposed about said body and stick and mounted to the body for longitudinal sliding movement therealong parallel to said axis and relative to both the body and stick, said cursor having a reference line disposed transversely of said axis and readable simultaneously against aligned portions of said logarithmic scales on both the body and stick, a first compass point carried by said cursor for sliding movement therewith, a second compass point which may be spaced from said first point longitudinally of said axis and coacting with said first point to enable use of said device as an adjustable beam compass and an additional slide element mounted by said body for slid movement therealong parallel to said axis and relative to both said slide stick and cursor and carrying said second compass point for adjusting movement therewith.

Claim 11

A device comprising an elongated rule body containing an elongated guideway extending along a predetermined axis longitudinally within the body, an elongated slide stick mounted slidably within said guideway for longitudinal movement parallel to said axis, logarithmic slide rule scales on said body and said slide stick readable against one another to make a slide rule calculation, a cursor disposed about said body and stick and mounted to the body for longitudinal sliding movement therealong parallel to said axis and relative to both the body and stick, said cursor having a reference line disposed transversely of said axis and readable simultaneously against aligned portions of said logarithmic scales on both the body and stick, a first compass point carried by said cursor for sliding movement therewith, a second compass point which may be spaced from said first point longitudinally of said axis and coacting with said first point to enable use of said device as an adjustable beam compass and an additional slide element mounted by said body for slid movement therealong parallel to said axis and relative to both said slide stick and cursor and carrying said second compass point for adjusting movement therewith.

Claim 14

A device comprising an elongated rule body containing an elongated guideway extending along a predetermined axis longitudinally within the body, an elongated slide stick mounted slidably within said guideway for longitudinal movement parallel to said axis, logarithmic slide rule scales on said body and said slide stick readable against one another to make a slide rule calculation, a cursor disposed about said body and stick and mounted to the body for longitudinal sliding movement therealong parallel to said axis and relative to both the body and stick, said cursor having a reference line disposed transversely of said axis and readable simultaneously against aligned portions of said logarithmic scales on both the body and stick, an enlargement carried by said slide stick beyond said body and having an external size larger than said guideway and similar to that of said body, said cursor being slidable axially off of said body and to an inactive position about said enlargement.

Claim 15

A device comprising an elongated rule body containing an elongated guideway extending along a predetermined axis longitudinally within the body, an elongated slide stick mounted slidably within said guideway for longitudinal movement parallel to said axis, logarithmic slide rule scales on said body and said slide stick readable against one another to make a slide rule calculation, a cursor disposed about said body and stick and mounted to the body for longitudinal sliding movement therealong parallel to said axis and relative to both the body and stick, said cursor having a reference line disposed transversely of said axis and readable simultaneously against aligned portions of said logarithmic scales on both the body and stick, an enlargement carried by said slide stick beyond said body and having an external size larger than said guideway and similar to that of said body, said cursor being slidable axially off of said body and to an inactive position about said enlargement.

Claim 17

A device comprising an elongated rule body containing an elongated guideway extending along a predetermined axis longitudinally within the body, an elongated slide stick mounted slidably within said guideway for longitudinal movement parallel to said axis, logarithmic slide rule scales on said body and said slide stick readable against one another to make a slide rule calculation, a cursor disposed about said body and stick and mounted to the body for longitudinal sliding movement therealong parallel to said axis and relative to both the body and stick, said cursor having a reference line disposed transversely of said axis and readable simultaneously against aligned portions of said logarithmic scales on both the body and stick, a first compass point carried by said cursor for sliding movement therewith, a second compass point which may be spaced from said first point longitudinally of said axis and coacting with said first point to enable use of said device as an adjustable beam compass, and means for attaching said cursor in a predetermined inactive position to said slide stick.

Claim 18

A device comprising an elongated rule body containing an elongated guideway extending along a predetermined axis longitudinally within the body, an elongated slide stick mounted slidably within said guideway for longitudinal movement parallel to said axis, logarithmic slide rule scales on said body and said slide stick readable against one another to make a slide rule calculation, a cursor disposed about said body and stick and mounted to the body for longitudinal sliding movement therealong parallel to said axis and relative to both the body and stick, said cursor having a reference line disposed transversely of said axis and readable simultaneously against aligned portions of said logarithmic scales on both the body and stick, a first compass point carried by said cursor for sliding movement therewith, a second compass point which may be spaced from said first point longitudinally of said axis and coacting with said first point to enable use of said device as an adjustable beam compass, and means for attaching said cursor in a predetermined inactive position to said slide stick.

Claim 19

A device comprising an elongated rule body containing an elongated guideway extending along a predetermined axis longitudinally within the body, an elongated slide stick mounted slidably within said guideway for longitudinal movement parallel to said axis, logarithmic slide rule scales on said body and said slide stick readable against one another to make a slide rule calculation, a cursor disposed about said body and stick and mounted to the body for longitudinal sliding movement therealong parallel to said axis and relative to both the body and stick, said cursor having a reference line disposed transversely of said axis and readable simultaneously against aligned portions of said logarithmic scales on both the body and stick, a first compass point carried by said cursor for sliding movement therewith, a second compass point wHich may be spaced from said first point longitudinally of said axis and coacting with said first point to enable use of said device as an adjustable beam compass, and an enlargement carried by said slide stick beyond said body and having a width greater than that of said stick and corresponding generally to that of said body and onto which said cursor is slidably movable from the body in a predetermined inactive position.

Claim 20

A device comprising an elongated rule body containing an elongated guideway extending along a predetermined axis longitudinally within the body, an elongated slide stick mounted slidably within said guideway for longitudinal movement parallel to said axis, logarithmic slide rule scales on said body and said slide stick readable against one another to make a slide rule calculation, a cursor disposed about said body and stick and mounted to the body for longitudinal sliding movement therealong parallel to said axis and relative to both the body and stick, said cursor having a reference line disposed transversely of said axis and readable simultaneously against aligned portions of said logarithmic scales on both the body and stick, a first compass point carried by said cursor for sliding movement therewith, a second compass point wHich may be spaced from said first point longitudinally of said axis and coacting with said first point to enable use of said device as an adjustable beam compass, and an enlargement carried by said slide stick beyond said body and having a width greater than that of said stick and corresponding generally to that of said body and onto which said cursor is slidably movable from the body in a predetermined inactive position.

Claim 22

A device comprising an elongated rule body containing an elongated guideway extending along a predetermined axis longitudinally within the body, an elongated slide stick mounted slidably within said guideway for longitudinal movement parallel to said axis, logarithmic slide rule scales on said body and said slide stick readable against one another to make a slide rule calculation, a cursor disposed about said body and stick and mounted to the body for longitudinal sliding movement therealong parallel to said axis and relative to both the body and stick, said cursor having a reference line disposed transversely of said axis and readable simultaneously against aligned portions of said logarithmic scales on both the body and stick, a first compass point carried by said cursor for sliding movement therewith, a second compass point which may be spaced from said first point longitudinally of said axis and coacting with said first point to enable use of said device as an adjustable beam compass, and detent means for releasably retaining said slide stick in a predetermined position relative to said body.

Claim 23

A device comprising an elongated rule body containing an elongated guideway extending along a predetermined axis longitudinally within the body, an elongated slide stick mounted slidably within said guideway for longitudinal movement parallel to said axis, logarithmic slide rule scales on said body and said slide stick readable against one another to make a slide rule calculation, a cursor disposed about said body and stick and mounted to the body for longitudinal sliding movement therealong parallel to said axis and relative to both the body and stick, said cursor having a reference line disposed transversely of said axis and readable simultaneously against aligned portions of said logarithmic scales on both the body and stick, a first compass point carried by said cursor for sliding movement therewith, a second compass point which may be spaced from said first point longitudinally of said axis and coacting with said first point to enable use of said device as an adjustable beam compass, and detent means for releasably retaining said slide stick in a predetermined position relative to said body.

Claim 24

A device comprising an elongated rule body containing an elongated guideway extending along a predetermined axis longitudinally within the body, an elongated slide stick mounted slidably within said guideway for longitudinal movement parallel to said axis, logarithmic slide rule scales on said body and said slide stick readable against one another to make a slide rule calculation, a cursor disposed about said body and stick and mounted to the body for longitudinal sliding movement therealong parallel to said axis and relative to both the body and stick, said cursor having a reference line disposed transversely of said axis and readable simultaneously against aligned portions of said logarithmic scales on both the body and stick, a first compass point carried by said cursor for sliding movement therewith, a second compass point which may be spaced from said first point longitudinally of said axis and coacting with said first point to enable use of said device as an adjustable beam compass, and an additional slide element mounted slidably in said guideway beyond said slide stick and carrying said second compass point.

Claim 25

A device comprising an elongated rule body containing an elongated guideway extending along a predetermined axis longitudinally within the body, an elongated slide stick mounted slidably within said guideway for longitudinal movement parallel to said axis, logarithmic slide rule scales on said body and said slide stick readable against one another to make a slide rule calculation, a cursor disposed about said body and stick and mounted to the body for longitudinal sliding movement therealong parallel to said axis and relative to both the body and stick, said cursor having a reference line disposed transversely of said axis and readable simultaneously against aligned portions of said logarithmic scales on both the body and stick, a first compass point carried by said cursor for sliding movement therewith, a second compass point which may be spaced from said first point longitudinally of said axis and coacting with said first point to enable use of said device as an adjustable beam compass, and an additional slide element mounted slidably in said guideway beyond said slide stick and carrying said second compass point.