US934260A - Combination center-square. - Google Patents

Combination center-square. Download PDF

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Publication number
US934260A
US934260A US47039609A US1909470396A US934260A US 934260 A US934260 A US 934260A US 47039609 A US47039609 A US 47039609A US 1909470396 A US1909470396 A US 1909470396A US 934260 A US934260 A US 934260A
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apertures
blade
pins
edge
head
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US47039609A
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Peter Hall Allison
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L7/00—Straightedges
    • B43L7/10—Plural straightedges relatively movable
    • B43L7/12—Square and pivoted straightedges

Definitions

  • the instrument is provided with a blade and a head thereon, having apertures disposed on opposite sides of a line coinciding with the inner edge of the blade, and removable pins for engagement with the said apertures to bring the pins and the edge of the blade in desired relative positions.
  • Figure 1 is a perspective view of the improvement
  • Fig. 2 is a plan View of the same, parts being in section, and showing the instrument as applied for centering a round piece of work
  • Fig. 3 is a cross section of the same on the line 3-3 of Fig. 2 and showing the instrument applied to a piece of work of small diameter
  • Fig. 4 is a plan view of the improvement and showing the various angles that can be accurately laid out by the use of the instrument.
  • the blade A of the measuring instrument terminates at one end in a head B extending on opposite sides of the inner edge A. of the blade A, as plainly shown in the drawings.
  • the head B is provided with pairs of apertures O, G and C C of which the apertures C, O are disposed equidistant on opposite sides of a line coinciding with the inner edge A, and the apertures C G are similarly disposed equidistant on opposite sides of the inner edge A, but the apertures C, C are nearer together than the apertures C C
  • An auxiliary aperture (1* is also arranged on the head B a distance forward of the aperture C
  • the apertures O, C are adapted to be engaged by removable head pins D, D, and similar pins D D Specification of Letters Patent.
  • y are adapted to be engaged with the apertures C C and any one of the pins may be insorted in the aperture C. 1
  • the two pins D D and the instrument is applied to the work E, so that the pins D 1) engage the peripheral face of the work E and the blade A extends across the end to be centered.
  • lines are drawn along the edge A across the end of the work E, and the intersection of the lines indicates the center of the wor E.
  • the arrangement of the apertures C, C, C and C with respect to the edge A is such that a line drawn through the centers of the openings 0, C will form upon the side adjacent to the opening C an angle of 15 with the edge, while on the opposite side the angle will be 135.
  • the arrangement of the openings G, C with respect to the edge is the same.
  • the arrangement of the opening C and the opening G with respect to the edge is such that a line drawn through the centers of C, C will make an angle of 30 with the edge on the side toward the opening C,
  • the measuring instrument shown and described is very simple and durable in c011- struction, and by the use of the removable pins in the several apertures the instrument can be readily used for accurately determining the center of round work, for laying out angles and for using the instrument as a square, depth gage, scale and the like.
  • the lines shown in Fig. 4, extending outside of the instrument and marked 45, are lines that may be laid out by the instrument relative to an arbitrary line which may be considered as the base.
  • a measuring instrument comprising a head and a blade havinga straight edge and extending from the head, said head having detachable pins connected therewith and ar ranged in pairs, the members of each pair being arranged upon opposite sides of the straight edge of the blade and at equal dis tances therefrom, and in such manner that the lines connecting the centers of the members of a pair will intersect the edge at a right angle.
  • a measuring instrument comprising a blade, a head on one end of the said blade and having pairs of apertures, the apertures of each pair being spaced equidistant on opposite sides of a line coinciding with the illner edge of the said blade, and pins for rethe said apertures.
  • a measuring instrument comprising a blade, a head 011 one end of the said blade and having pairs of apertures, the apertures of each pair being spaced equidistant on opposite sides of a line coinciding with the inner edge of the said blade, the distances between the apertures of the said pairs of apertures varying for larger and smaller work, and pins for removable engagement with the said apertures.
  • a measuring instrument comprising a blade, a head on one end of the said blade and having pairs of apertures, the apertures of each pair being spaced equidistant on opposite sides of a line coinciding with the inner edge of the said blade, the said head also having an auxiliary aperture, and pins for removable engagement with the said apertures.
  • a measuring instrument comprising a head and a blade having a straight edge and extending from the head, the head having a series of openings upon each side of the straight edge, the individual members of which are arranged at different distances from the edge, the arrangement of the members of the series on one side being symmetrical with the arrangement of the series of the members on the other side, and a pair of pins for engaging the openings.

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  • A Measuring Device Byusing Mechanical Method (AREA)

Description

P. H. ALLISON.
COMBINATION CENTER SQUARE. APPLICATION I'ILBD JAN. 2, 1909.
Patehted Sept. 14,1909.
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UNITED STATES PATENT onnicn.
COMBINATION CENTER-SQUARE Application filed January 2, 1909.
ing the center of round'work, for laying out angles and for use as a T-square, depth gage and scale.
For the purpose mentioned the instrument is provided with a blade and a head thereon, having apertures disposed on opposite sides of a line coinciding with the inner edge of the blade, and removable pins for engagement with the said apertures to bring the pins and the edge of the blade in desired relative positions.
A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in which similar characters of reference indi-. cate corresponding parts in all the views.
Figure 1 is a perspective view of the improvement; Fig. 2 is a plan View of the same, parts being in section, and showing the instrument as applied for centering a round piece of work; Fig. 3 is a cross section of the same on the line 3-3 of Fig. 2 and showing the instrument applied to a piece of work of small diameter; and Fig. 4: is a plan view of the improvement and showing the various angles that can be accurately laid out by the use of the instrument.
The blade A of the measuring instrument terminates at one end in a head B extending on opposite sides of the inner edge A. of the blade A, as plainly shown in the drawings. The head B is provided with pairs of apertures O, G and C C of which the apertures C, O are disposed equidistant on opposite sides of a line coinciding with the inner edge A, and the apertures C G are similarly disposed equidistant on opposite sides of the inner edge A, but the apertures C, C are nearer together than the apertures C C An auxiliary aperture (1* is also arranged on the head B a distance forward of the aperture C The apertures O, C are adapted to be engaged by removable head pins D, D, and similar pins D D Specification of Letters Patent.
Patented Sept. 14, 1909.
Serial No. 470,396.
y are adapted to be engaged with the apertures C C and any one of the pins may be insorted in the aperture C. 1 Now when it is desired to find the center of a round piece of work E of large diameter, as shown in Fig. 2, then use is made of the two pins D D and the instrument is applied to the work E, so that the pins D 1) engage the peripheral face of the work E and the blade A extends across the end to be centered. Now lines are drawn along the edge A across the end of the work E, and the intersection of the lines indicates the center of the wor E.
When it is desired to find the center of a small piece of work E use is made of the pins 1), D in the same manner as above described relative to the work E and the pins D D By using the pins D, D for instance, while the other pins D, D are removed, an angle of 45 may be drawn relative to the edge against which the said pins D and D abut, and angles of and 30 may be drawn by inserting the pin D in the aperture 0* and using this pin D in connection with the pin D inserted in the aperture C. In a like manner an angle of 60 may be drawn by the use of pins in the apertures C and C, it being understood that the angles are drawn along the inner edge A of the blade A.
It will be understood that the arrangement of the apertures C, C, C and C with respect to the edge A is such that a line drawn through the centers of the openings 0, C will form upon the side adjacent to the opening C an angle of 15 with the edge, while on the opposite side the angle will be 135. The arrangement of the openings G, C with respect to the edge is the same. The arrangement of the opening C and the opening G with respect to the edge is such that a line drawn through the centers of C, C will make an angle of 30 with the edge on the side toward the opening C,
. movable engagement with The measuring instrument shown and described is very simple and durable in c011- struction, and by the use of the removable pins in the several apertures the instrument can be readily used for accurately determining the center of round work, for laying out angles and for using the instrument as a square, depth gage, scale and the like.
The lines shown in Fig. 4, extending outside of the instrument and marked 45, are lines that may be laid out by the instrument relative to an arbitrary line which may be considered as the base.
Having thus described my invention, I claim as new and desire to secure by Letters Patent:
1. A measuring instrument comprising a head and a blade havinga straight edge and extending from the head, said head having detachable pins connected therewith and ar ranged in pairs, the members of each pair being arranged upon opposite sides of the straight edge of the blade and at equal dis tances therefrom, and in such manner that the lines connecting the centers of the members of a pair will intersect the edge at a right angle.
2. A measuring instrument comprising a blade, a head on one end of the said blade and having pairs of apertures, the apertures of each pair being spaced equidistant on opposite sides of a line coinciding with the illner edge of the said blade, and pins for rethe said apertures.
3. A measuring instrument comprising a blade, a head 011 one end of the said blade and having pairs of apertures, the apertures of each pair being spaced equidistant on opposite sides of a line coinciding with the inner edge of the said blade, the distances between the apertures of the said pairs of apertures varying for larger and smaller work, and pins for removable engagement with the said apertures.
at. A measuring instrument comprising a blade, a head on one end of the said blade and having pairs of apertures, the apertures of each pair being spaced equidistant on opposite sides of a line coinciding with the inner edge of the said blade, the said head also having an auxiliary aperture, and pins for removable engagement with the said apertures.
5. A measuring instrument comprising a head and a blade having a straight edge and extending from the head, the head having a series of openings upon each side of the straight edge, the individual members of which are arranged at different distances from the edge, the arrangement of the members of the series on one side being symmetrical with the arrangement of the series of the members on the other side, and a pair of pins for engaging the openings.
In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
Witnesses: 4
EDWARD W. MORGAN, DANIEL McDoUeALL.
US47039609A 1909-01-02 1909-01-02 Combination center-square. Expired - Lifetime US934260A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2611185A (en) * 1950-03-21 1952-09-23 Julius C Thursack Mechanic's shop work layout tool of the head and pivoted blade type
US2643462A (en) * 1952-01-08 1953-06-30 Garon Tobias Balance assembly gauge
US2776493A (en) * 1953-08-03 1957-01-08 Harold L Jerand Floor covering mechanic's tool
US2981004A (en) * 1959-03-16 1961-04-25 George E Edlund Draftsman's perspective instrument
US4506451A (en) * 1983-11-17 1985-03-26 Hiltz Paul J Multi-functional square and angle marking tool having extendable stops

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2611185A (en) * 1950-03-21 1952-09-23 Julius C Thursack Mechanic's shop work layout tool of the head and pivoted blade type
US2643462A (en) * 1952-01-08 1953-06-30 Garon Tobias Balance assembly gauge
US2776493A (en) * 1953-08-03 1957-01-08 Harold L Jerand Floor covering mechanic's tool
US2981004A (en) * 1959-03-16 1961-04-25 George E Edlund Draftsman's perspective instrument
US4506451A (en) * 1983-11-17 1985-03-26 Hiltz Paul J Multi-functional square and angle marking tool having extendable stops

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