Coilable rule and replacement cartridge therefor
AssigneeStanley-Mabo S.A.
InventorLouis Scandella
Life of this patent
Estimating the term…
Abstract
This coilable rule and its replacement cartridge comprise a tape mounted in a cartridge adapted to be detachably mounted in turn in a casing. The cartridge constitutes an integral unit and consists of a central post rigid with a lateral flange and of a spool comprising a lateral flange adapted to pivot about the central post. The lateral flange of the central post is formed integrally with an element for retaining the inner end of the tape on the spool, and this element extends over the outer peripheral wall of the spool, from which it is spaced, and is parallel to the central post. Lug means are also provided for holding the cartridge against rotation in the casing.
Claims20
A coilable-rule linear measuring instrument with a coiled return spring, comprising a cartridge detachably mounted in a casing provided with a tape outlet slot, said cartridge having mounted therein a tape provided with a hook at its outer end, said cartridge having a central post having one end rigid with a lateral flange and a spool having a lateral flange formed with a central aperture and adapted to pivot about said central post, said spool further having a peripheral wall provided with generally annular side flanges between which the measuring tape is wound on said outer peripheral wall;
- a tape return spring mounted in an annular chamber defined by said central post and said peripheral wall, said peripheral wall having an aperture through which said spring is connected to said tape, said cartridge including an element for retaining the free end of said tape on said spool, whereby said cartridge constitutes a compact unit, said retaining element being formed integrally with said lateral flange rigid with said central post, the end of said central post which is opposite said lateral flange projecting externally from the lateral flange of said spool, said central post lateral flange being provided with at least one radial holding lug, said cartridge being slidably fitted in said casing, said casing including a one-piece case having a groove formed in one of its main sidewalls, said groove extending at a right angle to the open side of said casing and being adapted to be engaged by said central post and to constitute a recess engageable thereby, the opposite main sidewall being provided with a hollow portion engaged by said at least one radial lug for positioning and holding against movement said lateral flange rigid with said central post in said casing, said casing further including a cover for closing said case.
A coilable-rule linear measuring instrument with a coiled return spring, which comprises a cartridge detachably mounted in a casing formed with a tape outlet slot and with an aperture on one of its minor sides adjacent said slot, said cartridge having mounted therein a coilable measuring tape provided with a hook at its outer end, said cartridge having a central post rigid with a lateral flange at one end, and a spool comprising a lateral flange pivoting about said central post and an outer peripheral wall provided with annular side flanges between which said tape is wound on said outer peripheral wall of said spool, a tape return spring mounted in an annular chamber defined by said central post and said outer peripheral wall, said peripheral wall having an aperture through which said return spring is connected to said tape, said cartridge including an element for retaining the free end of said tape on said spool, said cartridge constituting an integral unit and said retaining element being formed integrally with said central post lateral flange and being rigidly connected to a locking lever provided with a control knob accessible through said casing aperture, the sub-assembly consisting of said locking lever, retaining element, lateral flange and central post being movable angularly within said casing from a position in which said locking lever is inoperative to a position in which said locking lever is adapted to lock said tape against the other minor side of said casing which is adjacent said tape outlet slot.
A coilable-rule linear measuring instrument with a coiled return spring comprising a cartridge adapted to be detachably mounted in a casing formed with a tape outlet slot said cartridge including a tape provided with a hook at its outer end, said cartridge having a central post rigid with a lateral flange at one end and a spool comprising a lateral flange adapted to pivot about said central post and an outer peripheral wall provided with annular side flanges between which said tape is wound on said outer peripheral wall of said spool, a tape return spring mounted in an annular chamber defined by said central post and said outer peripheral wall, said peripheral wall being provided with an aperture through which said spring is connected to said tape, said cartridge including an element for retaining the free end of said tape on said spool, said cartridge constituting a compact unit, said retaining element being formed integrally with said lateral flange rigid with said central post and formed with an outer peripheral wall surrounding said peripheral wall of said spool, said outer peripheral wall of said retaining element having an aperture to permit the passage of said tape therethrough, one edge of said aperture constituting said retaining element.
A coilable-rule linear measuring instrument with a coiled return spring comprising a cartridge adapted to be detachably mounted in a casing formed with a tape outlet slot, said cartridge including a tape provided with a hook at is outer end, said cartridge having a central post rigid with a lateral flange at one end, a spool comprising a lateral flange adapted to pivot about said central post and an outer peripheral wall provided with annular side flanges between which said tape is wound on said outer peripheral wall of said spool, a tape return spring being mounted in an annular chamber defined by said central post and said outer peripheral wall, said cartridge including an element for retaining the free end of said tape on said spool, said cartridge constituting a compact unit, said retaining element being formed integrally with said lateral flange rigid with said central post, said retaining element rigid with said central post having a notch formed therein and retaining lugs formed on the outer end of the return spring, the outer peripheral wall of said spool having a pair of apertures formed therein through which said return spring and said tape are interconnected.
Dependencies are inferred from the claim text.