US667264A - Protractor. - Google Patents

Protractor. Download PDF

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Publication number
US667264A
US667264A US2033000A US1900020330A US667264A US 667264 A US667264 A US 667264A US 2033000 A US2033000 A US 2033000A US 1900020330 A US1900020330 A US 1900020330A US 667264 A US667264 A US 667264A
Authority
US
United States
Prior art keywords
arm
socket
protractor
bar
arms
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
US2033000A
Inventor
Frank Arther Tibbals
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US2033000A priority Critical patent/US667264A/en
Application granted granted Critical
Publication of US667264A publication Critical patent/US667264A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
    • H02G1/08—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle through tubing or conduit, e.g. rod or draw wire for pushing or pulling
    • H02G1/081—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle through tubing or conduit, e.g. rod or draw wire for pushing or pulling using pulling means at cable ends, e.g. pulling eyes or anchors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32254—Lockable at fixed position
    • Y10T403/32262—At selected angle

Definitions

  • n1 NORRIS Pzrzis co. mom-urns" wAsnmu mu, n. c
  • This invention relates to protractors and rulers; and it consists in the novel construction and combination of the parts hereinafter fully described and claimed.
  • Figure l is a plan View of the instrument.
  • Fig. 2 is a side view.
  • Fig. 3 is a cross-section taken on the line w x in Fig. 1.
  • A is one arm of the protractor or ruler, which is provided with a tubular socket B at one end, formed on a circular arc having its center at b, which is one end of the arm A.
  • O is the other arm of the protractor or ruler, which is provided with an oliiset bar 0, which is formed on the same circular arc as the socket B and which is slidable within it.
  • the bar 0 is offset at c from the under side of the arm 0, the two arms always lie in the same plane.
  • the bar 0 is provided with a numbered scale d, which indicates the angle at which the arm 0 is set.
  • Both arms A and O are provided with beveled ruling edges e.
  • the socket B has a cover-plate f, which is secured to it by rivets g, which pass through laterally projecting bosses g on the said socket and its cover.
  • G is a thumb screw or other approved clamping device for securing the bar in the socket, and thereby locking the said arms when set to any desired angle.

Description

No. 667,264. Patented Feb. 5, l90l. F. A. TIBBALS.
PROTRACTOR.
(Application filed June 14, 1900.)
(No Model.)
n1: NORRIS Pzrzis co. mom-urns" wAsnmu mu, n. c
UNITED STATES PATENT FFICE.
FRANK ARTHER TIBBALS, OF LYNN, MASSACHUSETTS.
PROTRACTO R.
SPECIFICATION forming' part of Letters Patent No. 667,264, dated February 5, 1901.
Application filed J 1116 14, 1900- To all whom it may concern:
Be it known that I, FRANK ARTHER TIB- BALS, a citizen of the United States, residing at Lynn, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Protractors; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.
This invention relates to protractors and rulers; and it consists in the novel construction and combination of the parts hereinafter fully described and claimed.
In the drawings, Figure l is a plan View of the instrument. Fig. 2 is a side view. Fig. 3 is a cross-section taken on the line w x in Fig. 1.
A is one arm of the protractor or ruler, which is provided with a tubular socket B at one end, formed on a circular arc having its center at b, which is one end of the arm A. O is the other arm of the protractor or ruler, which is provided with an oliiset bar 0, which is formed on the same circular arc as the socket B and which is slidable within it. One end of the arm Cis arranged at the point I), so that the arms may be set at any angle and will always converge to the point I). As
Serial No. 20,330. (No model.)
the bar 0 is offset at c from the under side of the arm 0, the two arms always lie in the same plane. The bar 0 is provided with a numbered scale d, which indicates the angle at which the arm 0 is set. Both arms A and O are provided with beveled ruling edges e.
The socket B has a cover-plate f, which is secured to it by rivets g, which pass through laterally projecting bosses g on the said socket and its cover.
G is a thumb screw or other approved clamping device for securing the bar in the socket, and thereby locking the said arms when set to any desired angle.
What I claim is The combination, with an arm provided with a tubular socket having a cover-plate secured to it on one side, said socket and plate having laterally-projecting bosses for the fastening devices; of an arm provided with a curved bar which is slidable in the said socket, substantially as setforth.
In testimony whereof I affix my signature in presence of two witnesses.
FRANK ARTHER TIBBALS.
Witnesses;
ALICE J. MURRAY, FRED. K. DAGGETT.
US2033000A 1900-06-14 1900-06-14 Protractor. Expired - Lifetime US667264A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US2033000A US667264A (en) 1900-06-14 1900-06-14 Protractor.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US2033000A US667264A (en) 1900-06-14 1900-06-14 Protractor.

Publications (1)

Publication Number Publication Date
US667264A true US667264A (en) 1901-02-05

Family

ID=2735820

Family Applications (1)

Application Number Title Priority Date Filing Date
US2033000A Expired - Lifetime US667264A (en) 1900-06-14 1900-06-14 Protractor.

Country Status (1)

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US (1) US667264A (en)

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