US422701A - Draftsman s rule - Google Patents

Draftsman s rule Download PDF

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US422701A
US422701A US422701DA US422701A US 422701 A US422701 A US 422701A US 422701D A US422701D A US 422701DA US 422701 A US422701 A US 422701A
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rule
rules
draftsman
longitudinal
draftsmans
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B3/00Measuring instruments characterised by the use of mechanical techniques
    • G01B3/02Rulers with scales or marks for direct reading
    • G01B3/04Rulers with scales or marks for direct reading rigid

Definitions

  • WITNESSES l/VVE/l /TUR XRXJTW. dim
  • This invention relates to improvements in the rules used by draftsmen, and especially to that class of rules known as fiat rules.
  • the object of our invention is to provide a new and improved rule which can easily be grasped, held, and shifted.
  • the invention consists in the flat rule provided on its upper surface with a longitudinal handle-ridge.
  • Figure 1 is a perspective view of our improved draftsmans rule.
  • Fig. 2 is a perspective view of a modified construction of the same. 7
  • the rule A which may be made of wood, ivory, hard rubber, or any other suitable sub stance, is provided along its edges with bev els a, upon which the scalesubdivisions are produced in the usual manner.
  • bev els a At the upper edge of each bevel a a longitudinal groove 1) is formed in the top of the rule, and between said grooves the raised longitudinal handle projection B is formed.
  • the 1011- gitudinal raised handle projection B can be made as. a separate dovetailed piece which can be inserted into a longitudinal dovetailed groove in the top of the rule.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Time Recorders, Dirve Recorders, Access Control (AREA)

Description

(NoModeL) I F. BENZINGER & H. HGRABAU. DRAFTSMANS RULE.
No. 422,701. Patented Mar. 4, 1890.
WITNESSES: l/VVE/l /TUR XRXJTW. dim
UNITED STATES PATENT OFFICE.
FREDERICK BENZINGER, OF NEW YORK, N. Y., AND HANS EDGAR GRAlBAU,
OF HOBOKEN, NElV JERSEY.
DRAFTSMANS RU LE.
SPECIFICATION forming part of Letters Patent No. 422,701, dated March 4, 1890. Application filed October 22, 1889. Serial No. 327,806. (No model.)
To all whom it may concern.-
Be it known that we, FREDERICK BENZING- ER, a citizen of the United States, and a resident of New York city, in the county and State of New York, and HANS EDGAR GRA- BAU, a German citizen, and a resident of Hoboken, in the county of Hudson, State of New Jersey, have invented certain new and useful Improvements in DraftsmansRules,of which the following is a specification.
This invention relates to improvements in the rules used by draftsmen, and especially to that class of rules known as fiat rules.
The fiat rules made heretofore were made flat on top and were beveled toward the side edges, and in order to lift them from the table, drawing-board, or paper it was necessary to insert the finger-nails under the edges of the rule, which made handling of the rule more or less inconvenient.
The object of our invention is to provide a new and improved rule which can easily be grasped, held, and shifted.
The invention consists in the flat rule provided on its upper surface with a longitudinal handle-ridge.
In the accompanying drawings, Figure 1 is a perspective view of our improved draftsmans rule. Fig. 2 is a perspective view of a modified construction of the same. 7
Similar letters of referenceindicate corresponding parts.
The rule A, which may be made of wood, ivory, hard rubber, or any other suitable sub stance, is provided along its edges with bev els a, upon which the scalesubdivisions are produced in the usual manner. At the upper edge of each bevel a a longitudinal groove 1) is formed in the top of the rule, and between said grooves the raised longitudinal handle projection B is formed.
As the rules of this kind require a greater thickness of material than the ordinary fiat rules, and much of this material will go to waste in forming the bevels a and b, the 1011- gitudinal raised handle projection B can be made as. a separate dovetailed piece which can be inserted into a longitudinal dovetailed groove in the top of the rule.
Having thus described our invention, we
claim as new and desire to secure by Letters Patent- 1. Aliat draftsmans rule provided with the side bevels a, the longitudinal grooves 5, adjacent to said bevels, and the raised handle projection B between said grooves b, substantially as set forth. 7
2. The combination,with a flat draftsmans rule, of a longitudinal, raised handle-piece dovetailed into the top of said rule, substantially as set forth. i
In testimony that we claim the foregoing as our invention we have signed our names in presence of two subscribing witnesses.
FRED. BENZINGER.
HANS EDGAR GRABAU.
Witnesses:
OSCARVF. GUNZ, W. REIMHERE.
US422701D Draftsman s rule Expired - Lifetime US422701A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2501550A (en) * 1946-09-04 1950-03-21 Irene G Tamagna Electrocardiogram reading device
US2507056A (en) * 1946-10-08 1950-05-09 Lawrence R Smith Paper hanger's tool
US2509559A (en) * 1948-04-28 1950-05-30 John D Cardinell Drafting instrument
US3178826A (en) * 1962-03-23 1965-04-20 Aison Arnold Straight edge
US3406456A (en) * 1967-05-12 1968-10-22 Qps Inc Guide for cutting paper and the like
US20020166250A1 (en) * 2001-05-10 2002-11-14 Jimenez Eduardo J. Straight edge to facilitate holding and measuring and to provide protection when cutting
US20040254546A1 (en) * 2001-11-06 2004-12-16 Lefebvre Marc Andre' Device for use in measuring and/or analysing at least one parameter of an external body portion
US20070011897A1 (en) * 2004-09-17 2007-01-18 Javier Verdura Ruler with inlay strip

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2501550A (en) * 1946-09-04 1950-03-21 Irene G Tamagna Electrocardiogram reading device
US2507056A (en) * 1946-10-08 1950-05-09 Lawrence R Smith Paper hanger's tool
US2509559A (en) * 1948-04-28 1950-05-30 John D Cardinell Drafting instrument
US3178826A (en) * 1962-03-23 1965-04-20 Aison Arnold Straight edge
US3406456A (en) * 1967-05-12 1968-10-22 Qps Inc Guide for cutting paper and the like
US20020166250A1 (en) * 2001-05-10 2002-11-14 Jimenez Eduardo J. Straight edge to facilitate holding and measuring and to provide protection when cutting
US6782629B2 (en) 2001-05-10 2004-08-31 The Stanley Works Straight edge to facilitate holding and measuring and to provide protection when cutting
US20040254546A1 (en) * 2001-11-06 2004-12-16 Lefebvre Marc Andre' Device for use in measuring and/or analysing at least one parameter of an external body portion
US8075483B2 (en) * 2001-11-06 2011-12-13 L'ORéAL S.A. Device for use in measuring and/or analysing at least one parameter of an external body portion
US20070011897A1 (en) * 2004-09-17 2007-01-18 Javier Verdura Ruler with inlay strip

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