US3227391A - Steel tape measure - Google Patents

Steel tape measure Download PDF

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Publication number
US3227391A
US3227391A US370181A US37018164A US3227391A US 3227391 A US3227391 A US 3227391A US 370181 A US370181 A US 370181A US 37018164 A US37018164 A US 37018164A US 3227391 A US3227391 A US 3227391A
Authority
US
United States
Prior art keywords
casing
bar
tape
parts
spring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US370181A
Other languages
English (en)
Inventor
Quenot Michel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Quenot et Cie SARL
Original Assignee
Quenot et Cie SARL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Quenot et Cie SARL filed Critical Quenot et Cie SARL
Application granted granted Critical
Publication of US3227391A publication Critical patent/US3227391A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00—Measuring instruments characterised by the use of mechanical techniques
    • G01B3/10—Measuring tapes
    • G01B3/1005—Means for controlling winding or unwinding of tapes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00—Measuring instruments characterised by the use of mechanical techniques
    • G01B3/10—Measuring tapes
    • G01B3/1041—Measuring tapes characterised by casings
    • G01B3/1046—Details of external structure thereof, e.g. shapes for ensuring firmer hold
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00—Measuring instruments characterised by the use of mechanical techniques
    • G01B3/10—Measuring tapes
    • G01B3/1005—Means for controlling winding or unwinding of tapes
    • G01B3/1007—Means for locking
    • G01B2003/1017—Means for locking acting on the whole coil
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00—Measuring instruments characterised by the use of mechanical techniques
    • G01B3/10—Measuring tapes
    • G01B3/1005—Means for controlling winding or unwinding of tapes
    • G01B2003/1033—Means for activating the locking, braking or releasing of the tape, e.g. buttons
    • G01B2003/1038—Means for activating the locking, braking or releasing of the tape, e.g. buttons by translatory motion operation

Definitions

  • Winding systems for line-measuring steel tapes constituted by an open casing insidewhich is wound ayielding steel tape and including a braking bar, are incorthe oldest pocket tape measures on the market.
  • such arrangements were generally constituted by an open casing of nickel-coated steel, including at the center of its bottom a convex section to which is secured removably a head holding in position against the action of a spring blade, two ends of the two parts of a transverse bar, the two other ends of which are folded over the upper peripheral edge of the casing, so as to form a brake for the latter.
  • the ends of the spring blade are secured to both parts of the bar so as to hold them in contact with the casing.
  • a yielding steel tape, wound inside the casing, may be drawn out of the latter through a pressure exerted jointly on the two nickel-coated steel parts of the bar, so as to release the braking of thecylindrical casing and to allow it to pivot around the head and around the stationary bar,under the action of the elastic tape which has a tendency to be projected outwardly.
  • the present invention has for its object to remove these drawbacks.
  • a winding system for a tape measure constituted by an open casing, a tape wound inside said casing and means for braking the movements of the casing.
  • casing is made of steel and its inner peripheral surface is lined by a sheath of plastic material folded outwardly to either side the outer peripheral lateral surface of the cas1ng.
  • the medial part of the pivotal connection between the two parts of the transverse bar carries a tenon rigidly secured to one of said parts and adapted to be fitted through the central opening of the convex section of the casing, so as to pivotally secure the latter with reference to the bar.
  • FIG. 1 is a plan view of said embodiment.
  • FIG. 2 is a cross-section through line IIII of FIG. 1.
  • the arrangement illustrated includes a casing 1, the upper part of which is open and of which the bottom includes a raised convex section 2 provided with a central opening 3.
  • the inner peripheral surface 4 of said casing is lined with nylon at 5, said lining being folded over the peripheral edge 6 of the casing so as to form an upper annular ridge 7.
  • a steel tape 8, the cross-section of which is transversely concave, is simply wound inside the casing, without being attached thereto.
  • the casing is pivotally carried on the tenon 9 rigid with a transverse nylon bar made of two parts 10 and 11, pivotally secured around a transverse pivot 12.
  • the parts 10 and 11 of the bar have a generally triangular shape, and are pivotally connected with each other through said pivot 12 at their inner apex, while their outer apices terminate with lugs, respectively 13 and 14, which are folded at right angles over the edge 7 of the casing.
  • In the cooperating surfaces 15 and 16 of the parts Iii and 11 are formed symmetrical recesses 17 and 18 inside which is housed a coil spring 19.
  • the casing 1 is held on the tenon 9 of the bar through a circlips 20 engaging a groove 21 in the tenon in contacting relationship with a washer 22 while the downwardly facing surfaces of the parts 19 and 11 bear against the upper edge '7 of the casing under the action of the pressure exerted bythe spring 19 on said parts pivotally carried by the pivot 12 so as to space them apart.
  • the bar and the casing are thus braked with reference to each other.
  • the arrangement is held between the users thumb and forefinger which engage on either side the outer slighter concave surfaces of the lugs 13 and 14.
  • the pressure of the spring 19 is sufficient for holding the two parts of the bar apart. If now the thumb and the forefinger exert a pressure in opposite directions as illustrated by the arrows A, the two parts of the bar are urged towards each other in antagonism with the spring so that the casing is no longer subjected to the braking exerted on it previously by said parts of the bar.
  • the tape the material forming which and the convex shape of which ensure its plastic linear release, is projected outwardly, whereas the casing pivots freely around the tenon 9. By reducing the pressure exerted on the bar, the braking action is resumed.
  • the spontaneous projection of the tape out of the casing is thus furthered by the very favorable frictional coefficient between the steel measuring tape and the nylon sheath lining the casing as well as the nylon bar.
  • the pressure required for braking is on the other hand limited by the favorable leverage between the pivotal axis of the parts of the bar and the points of application of the forces exerted by the spring, the braking remaining eflicient.
  • a tape-measure of the type comprising an open casing with an upstanding circularperipheral flange and a 'centrallyper-forated bottom, a measuring metal-tape coiled inside said casing without being attached thereto, a twopart transverse bar the outer ends of which are folled downwardly against the casing flange, and adapted to resiliently lock said tape with respect to said casing, a pressure exerted on both outer ends of said bar unlocking said casing and permitting the release of said tape from the center of the coil outwardly through the open end of said casing, the combination of a lining of plastic material covering the inner surface of said flange and extending over the upper edge of the latter, said transverse bar being of plastic material and its two parts being pivotally interconnected, the inner end of each part of said bar being provided with a recess facing the recess in the other part, a spring-means being fitted inside both recesses to urge the two parts of the bar apart, in order to' brake the relative ang

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Tape Measures (AREA)
US370181A 1964-02-25 1964-05-26 Steel tape measure Expired - Lifetime US3227391A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR965126A FR1394930A (fr) 1964-02-25 1964-02-25 Dispositif d'enroulement d'un ruban souple en acier pour mesures linéaires

Publications (1)

Publication Number Publication Date
US3227391A true US3227391A (en) 1966-01-04

Family

ID=8824041

Family Applications (1)

Application Number Title Priority Date Filing Date
US370181A Expired - Lifetime US3227391A (en) 1964-02-25 1964-05-26 Steel tape measure

Country Status (4)

Country Link
US (1) US3227391A (fr)
CH (1) CH399747A (fr)
DE (2) DE1448403B2 (fr)
FR (1) FR1394930A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4155168A (en) * 1978-02-10 1979-05-22 Fairfield Sailing Supplies, Inc. Power extended tape measure
US4531688A (en) * 1983-09-12 1985-07-30 Sears, Roebuck & Co. Coilable device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1799094A (en) * 1928-10-05 1931-03-31 Hiram A Farrand Inc Means for controlling resilient rules
US1799044A (en) * 1929-07-05 1931-03-31 Hiram A Farrand Inc Means for controlling resilient rules
US2599320A (en) * 1950-07-29 1952-06-03 William F Dart Measuring tape and case therefor
US2720365A (en) * 1952-08-22 1955-10-11 Everett J Kovalchik Fishing reel
US3078058A (en) * 1959-06-15 1963-02-19 Justus Roe And Sons Inc Tape measure
US3095159A (en) * 1961-12-29 1963-06-25 Ethicon Inc Surgical dispenser

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1799094A (en) * 1928-10-05 1931-03-31 Hiram A Farrand Inc Means for controlling resilient rules
US1799044A (en) * 1929-07-05 1931-03-31 Hiram A Farrand Inc Means for controlling resilient rules
US2599320A (en) * 1950-07-29 1952-06-03 William F Dart Measuring tape and case therefor
US2720365A (en) * 1952-08-22 1955-10-11 Everett J Kovalchik Fishing reel
US3078058A (en) * 1959-06-15 1963-02-19 Justus Roe And Sons Inc Tape measure
US3095159A (en) * 1961-12-29 1963-06-25 Ethicon Inc Surgical dispenser

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4155168A (en) * 1978-02-10 1979-05-22 Fairfield Sailing Supplies, Inc. Power extended tape measure
US4531688A (en) * 1983-09-12 1985-07-30 Sears, Roebuck & Co. Coilable device

Also Published As

Publication number Publication date
DE1900378U (de) 1964-09-10
DE1448403B2 (de) 1969-10-09
DE1448403A1 (de) 1969-01-30
FR1394930A (fr) 1965-04-09
CH399747A (fr) 1965-09-30

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