US1268711A - T-square. - Google Patents

T-square. Download PDF

Info

Publication number
US1268711A
US1268711A US17093317A US17093317A US1268711A US 1268711 A US1268711 A US 1268711A US 17093317 A US17093317 A US 17093317A US 17093317 A US17093317 A US 17093317A US 1268711 A US1268711 A US 1268711A
Authority
US
United States
Prior art keywords
blade
head
square
slot
bolt
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
US17093317A
Inventor
Daniel Griffiths
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 US17093317A priority Critical patent/US1268711A/en
Application granted granted Critical
Publication of US1268711A publication Critical patent/US1268711A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • B43L7/02—T-squares and other similar squares

Definitions

  • This invention relates to a T-square and has for its primary object to provide a device of this character b means of which lines can be drawn at di erent angles.
  • An object of the invention is the novel manner of connecting the blade to the head whereby upon reversing the blade connection with the head the blade may be rigidly connected to the head or connected thereto for pivotal movements.
  • Figure 1 is a top plan view of the T-square.
  • Figs. 2 and 3 are sectional views on the 7 line w-a of Fig. 1 showing the two positions of the blade.
  • Figs. 4 and 5 are detailed views of a modified .form of the invention.
  • the numeral 1 designates the head of the T-square formed centrally with a slot 2 shown in this particular instance as rectangular in shape, although various other shaped slots may be used.
  • the blade 3 upon one side is formed with a rib 4, snugly received in the recess when the blade is to be rigidly secured to the head.
  • the head and blade may be made of a light metal such as alumiwidth of the slot it will be seen that when the blade is reversed as shown in Fig. 3 the blade is free to have pivotal movements relative to the head.
  • Figs. 4 and 5 I have shown the blade 6 so constructed that it will be only necessary to loosen the thumb bolt when reversing the blade and to accomplish this result the blade is formed with a passage 7 for receiving the shank of the bolt and depressions 8 for receiving the head of the bolt. As this passage is open at the adjacent end of the blade it will be seen that by slightly loosening the nut the blade will be free to 0 slide from under the head of the bolt.
  • T-square comprising a head having a slot a blade of a width greater than the width of the slot and having centrally located upon one side a rib of a width equal to the width of slot and adapted to be seated 7B in said slot in a predetermined position of the blade and a securing element passing through the blade, rib and head.

Landscapes

  • Scissors And Nippers (AREA)

Description

u. GRl FFITHS.
I-SQUARE. IAPPUGATION FILED MAY 25. 1912.
1,28,711 Patented Junm, 191s.
.fLs
WITNESS TED s'rATEs T-SQUARE.
Specification of Letters Patent.
Patented June a, 191.
Application filed May 25, 1917. Serial No. 170,938.
To all whom it may concern:
' Be it known that I, DANIEL GRIFFITHS, a
citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented new and useful Improvements in T-Squares, of
which the following is a specification.
This invention relates to a T-square and has for its primary object to provide a device of this character b means of which lines can be drawn at di erent angles.
An object of the invention is the novel manner of connecting the blade to the head whereby upon reversing the blade connection with the head the blade may be rigidly connected to the head or connected thereto for pivotal movements.
With these and other objects in view the invention will be better understood from the following detail description taken in connection with the accompanying drawing wherein:
Figure 1 is a top plan view of the T-square. Figs. 2 and 3 are sectional views on the 7 line w-a of Fig. 1 showing the two positions of the blade.
Figs. 4 and 5 are detailed views of a modified .form of the invention.
Again referring to the drawing the numeral 1 designates the head of the T-square formed centrally with a slot 2 shown in this particular instance as rectangular in shape, although various other shaped slots may be used. The blade 3 upon one side is formed with a rib 4, snugly received in the recess when the blade is to be rigidly secured to the head. At this point I wish to call attention to the fact that the head and blade may be made of a light metal such as alumiwidth of the slot it will be seen that when the blade is reversed as shown in Fig. 3 the blade is free to have pivotal movements relative to the head.
In Figs. 4 and 5 I have shown the blade 6 so constructed that it will be only necessary to loosen the thumb bolt when reversing the blade and to accomplish this result the blade is formed with a passage 7 for receiving the shank of the bolt and depressions 8 for receiving the head of the bolt. As this passage is open at the adjacent end of the blade it will be seen that by slightly loosening the nut the blade will be free to 0 slide from under the head of the bolt.
From the foregoing description taken in connection with the accompanying drawing it should be apparent that I provide a device that is admirably adapted for the pur- 5 pose in View in which the parts are substantially constructed and that may be men ufactured and sold at a comparatively low cost.
What I claim is: T-square comprising a head having a slot a blade of a width greater than the width of the slot and having centrally located upon one side a rib of a width equal to the width of slot and adapted to be seated 7B in said slot in a predetermined position of the blade and a securing element passing through the blade, rib and head.
In testimony whereof I afiix my signature.
DANIEL GRIFFITHS.
(topics o1 this patent may be obtained to! live cents each, by addressing the "commissioner of Retentn.
Washington, D. 0."
US17093317A 1917-05-25 1917-05-25 T-square. Expired - Lifetime US1268711A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US17093317A US1268711A (en) 1917-05-25 1917-05-25 T-square.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17093317A US1268711A (en) 1917-05-25 1917-05-25 T-square.

Publications (1)

Publication Number Publication Date
US1268711A true US1268711A (en) 1918-06-04

Family

ID=3336350

Family Applications (1)

Application Number Title Priority Date Filing Date
US17093317A Expired - Lifetime US1268711A (en) 1917-05-25 1917-05-25 T-square.

Country Status (1)

Country Link
US (1) US1268711A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4525933A (en) * 1983-04-11 1985-07-02 Patterson Richard M Adjustable T-square
US5675901A (en) * 1995-08-29 1997-10-14 Young; James D. Segmented, combination level and square having a rotating joint
US20070017108A1 (en) * 2005-07-22 2007-01-25 Hanson Craig A Telescoping T-square

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4525933A (en) * 1983-04-11 1985-07-02 Patterson Richard M Adjustable T-square
US5675901A (en) * 1995-08-29 1997-10-14 Young; James D. Segmented, combination level and square having a rotating joint
WO1998045126A1 (en) * 1995-08-29 1998-10-15 Young James D A segmented, combination level and square having a rotating joint
US20070017108A1 (en) * 2005-07-22 2007-01-25 Hanson Craig A Telescoping T-square
US7204031B2 (en) 2005-07-22 2007-04-17 Hanson Craig A Telescoping T-square

Similar Documents

Publication Publication Date Title
US1268711A (en) T-square.
US512086A (en) Pliers
US1160920A (en) Tool.
US1233212A (en) Brush-holder.
US1109444A (en) Attachment for rulers.
US1230901A (en) Adjustable t-square.
US1201342A (en) Drafting instrument.
US1157514A (en) Combination-tool for carpenters' use.
US911791A (en) Handle attachment.
US600389A (en) Screw-clamp
US1436848A (en) Dividers
US795145A (en) Draftsman's triangle.
US615806A (en) Bevel-square
US994570A (en) Combined protractor and t-square.
US570767A (en) Protractor
US874653A (en) Square.
US1023738A (en) Adjustable-arm protractor.
US1131962A (en) Draftsman's triangle.
US1222525A (en) Instrument.
US535223A (en) Measuring and drawing instrument
US504341A (en) Combined rule
US797804A (en) Tool-holder.
US968958A (en) Folding square.
US1061423A (en) Carpenter's square.
US677995A (en) Pencil-holder attachment for dividers.