US3742609A - Measuring instrument - Google Patents

Measuring instrument Download PDF

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Publication number
US3742609A
US3742609A US00140454A US3742609DA US3742609A US 3742609 A US3742609 A US 3742609A US 00140454 A US00140454 A US 00140454A US 3742609D A US3742609D A US 3742609DA US 3742609 A US3742609 A US 3742609A
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US
United States
Prior art keywords
pole
rack
strip
slide block
instrument according
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
US00140454A
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English (en)
Inventor
J Jeannet
J Leuba
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.)
Tesa SARL
Original Assignee
Tesa 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 Tesa SARL filed Critical Tesa SARL
Application granted granted Critical
Publication of US3742609A publication Critical patent/US3742609A/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
    • G01B3/20—Slide gauges

Definitions

  • ABSTRACT A measuring instrument comprising a pole or body portion including a rack recessed in a slot in one edge of the body.
  • the rack is protected by a flexible strip secured at one end to a tensioning spring.
  • a slide block is manually moved along the pole and includes a pinion which meshes with the rack.
  • the flexible strip is diverted around the pinion by two guide pins.
  • measuring instruments such as for example sliding calipers or marking gauges wherein a pole carries a rack which measures with one or more gears controlling the displacements of indicating means, said gears as well as said indicating means being fixed to a slide block which is movable along said pole.
  • These instruments generally permit a very accurate reading, however, this reading is dependent on the good state of the gearing of the rack which can be damaged by shocks or foreign bodies which may be introduced between the teeth and those of the guide gears of the indicating means.
  • the present invention has for its object a measuring instrument comprising a pole with a rack meshing with at least one gear controlling the displacements of indicating means, the gearing and indicating means being fixed to a slide block movable along the pole, and a flexible protective strip covering the rack characterized in that the protective strip is fixed to the pole on either side of the ends of the rack and slides in the slide block where it is separate from the rack close to the gear.
  • FIG. 1 is a profile view partially'in cross section
  • FIG. 2 is a section along the lines A-Aof FIG. 1.
  • the measuring instrument shown is a sliding caliper comprising a pole 1 having at one of its ends measuring tips 2.
  • the body of the pole 1 is hollowed out along its lower face by means of a groove 3 wherein is located, in known manner, a rack 4.
  • a movable slide block 5 carrying measuring tips 6 and comprising indicating means 7 which are driven by a series of gears 8 meshing with the rack 4.
  • the control of the indicating means 7 can be effected in any appropriate known manner and is not described.
  • Strip 9 extends over the gearing of rack 4 and its surface opposite to that which is applied to the gearing of rack 4 is located in the plane of the lower face of pole l.
  • Strip 9 passes into slide block 5 and the shoulders 14 and 15, which support the latter against the lower face of pole 1, maintain said strip tightly applied against the gearing of rack 4 in the groove 3 of pole 1.
  • strip 9 passes over two guide pins 16 and 17 arranged close to the gears 8 and intended to separate the strip 9 from rack 4 to give free passage to said gears 8.
  • the sliding caliper described is of simple and ecconomic construction because it does not require delicate machining or any special design of the pole or slide block. As the strip is fixed and only runs along the pole surface it is relatively short and there is no need to provide return mechanisms. The attachment of the strip to the ends of the groove containing the rack is simple and its guidance in the slide block only causes slightly deformations which can cause neither fatigue nor rupture. I
  • the strip 9 can be of metal, for example steel, or of. a non metallic material, such as for example a plastics material.
  • the guide pins 16 and 17 can be fixed or rotary and it is possible to replace them by any other adequate combination of pins or rollers arranged on the same side or on both sides of the strip or even by a support ramp of appropriate shape.
  • the measuring instrument according to the invention could also be a marking gauge or any other instrument comprising of a rack engaging with one or more gears controlling the displacements of indicating means, the gears and indicating means being fixed to a slide block which is movable along the pole.
  • a measuring instrument comprising; a pole for slidably supporting a slide block, said pole formed with a longitudinal slot; a rack positioned within the slot and secured thereto; at least one pinion rotatably mounted on the slide block and meshing with the rack; a flexible protective strip also positioned within the slot with its ends secured to the pole and covering the rack on both sides of the slide block; and deflection means inside the block for moving the flexible strip away from the rack and around the pinion when the slide block is moved along the pole.
  • deflection means inside the block include two support shoulders slidably engaging the edge of the pole adjoining the slot, said shoulders forming a deflection means for the flexible strip.
  • a measuring instrument comprising a pole for slidably supporting a slide block, said pole formed with a longitudinal slot; a rack positioned within the slot and secured thereto; at least one pinion rotatably mounted on the slide block and meshing with the rack; a flexible protective strip also positioned within the slot with its ends secured to the pole on both sides of the ends of the rack and covering the rack on both sides of the slide block; resilient means on said strip to subject same to an elastic tension action to automatically compensate for any variation in the length thereof; and deflection means inside the block for moving the strip away from the rack and around the pinion when the slide block is moved along the pole.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length-Measuring Instruments Using Mechanical Means (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
  • Transmission Devices (AREA)
US00140454A 1970-05-20 1971-05-05 Measuring instrument Expired - Lifetime US3742609A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH743670A CH510865A (fr) 1970-05-20 1970-05-20 Instrument de mesure

Publications (1)

Publication Number Publication Date
US3742609A true US3742609A (en) 1973-07-03

Family

ID=4325094

Family Applications (1)

Application Number Title Priority Date Filing Date
US00140454A Expired - Lifetime US3742609A (en) 1970-05-20 1971-05-05 Measuring instrument

Country Status (9)

Country Link
US (1) US3742609A (es)
AT (1) AT300392B (es)
BR (1) BR7102577D0 (es)
CH (1) CH510865A (es)
DE (1) DE2119504A1 (es)
ES (1) ES202413Y (es)
FR (1) FR2089644A5 (es)
GB (1) GB1333668A (es)
NL (1) NL7106804A (es)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4386470A (en) * 1979-07-20 1983-06-07 Perry David L E Drafting apparatus
US4477726A (en) * 1980-10-14 1984-10-16 Johannes Heidenhain Gmbh Position measuring apparatus utilizing flexible steel band containing grid divisions
US4551919A (en) * 1982-10-27 1985-11-12 Mitutoyo Mfg. Co., Ltd. Measuring instrument
US4552483A (en) * 1983-09-06 1985-11-12 Koh-I-Noor Rapidograph, Inc. Device for covering an oblong opening in a housing
US20030019702A1 (en) * 2001-07-26 2003-01-30 Daimlerchrysler Ag. Device for activating a parking brake
US20080173156A1 (en) * 2007-01-18 2008-07-24 May Randall L Drum rim gap or space dimension gauge
US20140150274A1 (en) * 2012-12-04 2014-06-05 Mitutoyo Corporation Electronic Caliper Configured to Generate Power for Measurement Operations
US9021715B2 (en) 2012-12-04 2015-05-05 Mitutoyo Corporation Electronic caliper configured to generate power for measurement operations
US20150276366A1 (en) * 2014-03-31 2015-10-01 Mitutoyo Corporation Flexible mount for coupling force actuator to caliper jaw
US9347757B2 (en) 2014-02-28 2016-05-24 Mitutoyo Corporation Wheel assembly for moving caliper jaw with repeatable force
US9417094B2 (en) 2014-02-28 2016-08-16 Mitutoyo Corporation Displacement sensor for force indicating caliper
US9612099B2 (en) 2015-03-10 2017-04-04 Mitutoyo Corporation Compliant thumb wheel assembly coupled to a caliper jaw

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2306653B (en) * 1995-10-23 1999-12-15 Finsbury Surgical tool

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1101096B (de) * 1958-03-05 1961-03-02 Wagner & Co Werkzeugmaschinenf Abdeckung fuer leistenfoermige Teile an Werkzeugmaschinen, wie Fuehrungsleisten, Vorschubzahn-stangen, Massstaebe od. dgl.
CH466588A (de) * 1967-12-12 1968-12-15 Meyer Hans Schiebelehre
US3447244A (en) * 1967-08-07 1969-06-03 Jule A Scholl Caliper

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1101096B (de) * 1958-03-05 1961-03-02 Wagner & Co Werkzeugmaschinenf Abdeckung fuer leistenfoermige Teile an Werkzeugmaschinen, wie Fuehrungsleisten, Vorschubzahn-stangen, Massstaebe od. dgl.
US3447244A (en) * 1967-08-07 1969-06-03 Jule A Scholl Caliper
CH466588A (de) * 1967-12-12 1968-12-15 Meyer Hans Schiebelehre

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4386470A (en) * 1979-07-20 1983-06-07 Perry David L E Drafting apparatus
US4477726A (en) * 1980-10-14 1984-10-16 Johannes Heidenhain Gmbh Position measuring apparatus utilizing flexible steel band containing grid divisions
EP0049743B1 (de) * 1980-10-14 1985-07-17 Dr. Johannes Heidenhain GmbH Positionsmesseinrichtung
US4551919A (en) * 1982-10-27 1985-11-12 Mitutoyo Mfg. Co., Ltd. Measuring instrument
US4552483A (en) * 1983-09-06 1985-11-12 Koh-I-Noor Rapidograph, Inc. Device for covering an oblong opening in a housing
US20030019702A1 (en) * 2001-07-26 2003-01-30 Daimlerchrysler Ag. Device for activating a parking brake
US20080173156A1 (en) * 2007-01-18 2008-07-24 May Randall L Drum rim gap or space dimension gauge
US7511210B2 (en) * 2007-01-18 2009-03-31 May Randall L Drum rim gap or space dimension gauge
US20140150274A1 (en) * 2012-12-04 2014-06-05 Mitutoyo Corporation Electronic Caliper Configured to Generate Power for Measurement Operations
US8931185B2 (en) * 2012-12-04 2015-01-13 Mitutoyo Corporation Electronic caliper configured to generate power for measurement operations
US9021715B2 (en) 2012-12-04 2015-05-05 Mitutoyo Corporation Electronic caliper configured to generate power for measurement operations
US9347757B2 (en) 2014-02-28 2016-05-24 Mitutoyo Corporation Wheel assembly for moving caliper jaw with repeatable force
US9417094B2 (en) 2014-02-28 2016-08-16 Mitutoyo Corporation Displacement sensor for force indicating caliper
US20150276366A1 (en) * 2014-03-31 2015-10-01 Mitutoyo Corporation Flexible mount for coupling force actuator to caliper jaw
US9267779B2 (en) * 2014-03-31 2016-02-23 Mitutoyo Corporation Flexible mount for coupling force actuator to caliper jaw
US9612099B2 (en) 2015-03-10 2017-04-04 Mitutoyo Corporation Compliant thumb wheel assembly coupled to a caliper jaw

Also Published As

Publication number Publication date
AT300392B (de) 1972-07-25
FR2089644A5 (es) 1972-01-07
GB1333668A (en) 1973-10-10
CH510865A (fr) 1971-07-31
ES202413Y (es) 1976-03-01
BR7102577D0 (pt) 1973-04-10
NL7106804A (es) 1971-11-23
ES202413U (es) 1975-11-16
DE2119504A1 (de) 1971-11-25

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