US1049299A - Knockdown carpenter's square. - Google Patents

Knockdown carpenter's square. Download PDF

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Publication number
US1049299A
US1049299A US68113812A US1912681138A US1049299A US 1049299 A US1049299 A US 1049299A US 68113812 A US68113812 A US 68113812A US 1912681138 A US1912681138 A US 1912681138A US 1049299 A US1049299 A US 1049299A
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United States
Prior art keywords
blade
tongue
channel
edge
square
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Expired - Lifetime
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US68113812A
Inventor
Albert A Harvie
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Individual
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Individual
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Priority to US68113812A priority Critical patent/US1049299A/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like for external osteosynthesis, e.g. distractors, contractors
    • A61B17/64—Devices extending alongside the bones to be positioned
    • A61B17/6408—Devices not permitting mobility, e.g. fixed to bed, with or without means for traction or reduction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
    • B23B31/006—Conical shanks of tools
    • 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
    • Y10T403/59—Manually releaseable latch type
    • Y10T403/597—Swiveled bolt

Definitions

  • This invention relates to a knock-down carpenters square; that is to a carpenters square, in which the blade and tongue are made separate, but in which means are provided for joining them together and securing them at right angles to each other.
  • the application has particular reference to that class of knockdown.square, in which the tongue and blade each constitutes practically a straight piece of material, so that the two parts can be easily packed into a carpenters kit, and can be easily manufactured.
  • the present invention has reference particularly to the means for joining the tongue and blade together.
  • Figure l shows a face view of the corner of the square, the tongue and blade being locked together;
  • Fig. 2 shows a face view of the end of a tongue disengaged from the blade;
  • Fig. 3 shows a face view of the end of the blade disengaged from the tongue;
  • Fig. 4 is a section taken on the line 4 4 of Fig. 1, looking in the direction of the arrows;
  • Fig. 5 is a section taken on the line of Fig. l, also looking in the direction of the arrows.
  • the numeral 6 designates the blade of the square
  • the numeral 7 designates the tongue.
  • the locking member is applied to the tongue, and other elements being correspondingly formed. It will soon be apparent, however, that the arrangement might be reversed, and that it is not necessary that the locking member should be applied to the tongue.
  • Va channel 8 is formed across the blade, the same having its Specication of Letters Patent.
  • a notch 11 is cut in from the outer edge of the blade, the same having its edge 12 beveled at an acute angle to the channel of the blade.
  • the end portion 15 of the tongue is of proper size to seat nicely into the notch l1.
  • the edges 16 and 17 of the tongue should be beveled to seat accurately against the faces 9 and l0 of the channel in the blade, and to make tight contact with them before the faces of the channels in the tongue and blade come together. It is preferred also that the edge 18 of the blade should Vbe undercut slightly, the edge 19 of the tongue being cut at a similar angle.
  • I provide a locking device for holding the two elements together after the tongue has been hooked into the blade.
  • the preferred construction comprises a headed screw 20 threaded into the tongue, and having its head 21 of a size to overlie a portion of the blade. It is preferred that this head should be beveled, as shown in Fig. 5, so that by threading the screw tightly into place the elements will be drawn together, and at the same time there will be a tendency to force the blade sidewise so as to insure a tight contact between the edges 12 and 14.
  • a notch 22 should preferably be formed in the blade to receive the overlying portion of the screw. In order to permit the square to be knockeddown without having to completely Withdraw the screw, the head of the latter may be cut away in the portion 23, so that by rotating the screw into the position shown in Fig. 2, the blade can be unhooked from the tongue.
  • a knockdown carpenters square the combination of a blade having a channel extending across one of its faces, and having the side Walls of the channel outwardly beveled, and having the edge of the .channel beveled at an -aoute angle to the n face thereof, a tongue having a channel extending across the complementary face thereof, and having the edges o-f the tongue beveled to correspond to the side Walls of the channel of the blade, and having the edge of the'channel of the tongue undercut the edge of the channel of the means for locking the tongue and blade together adjacent one edge of the the tongue being of the channel of the blade that the edges of the tongue enthe' edges of the blade channel before faces of the channels come into conblade, and
  • a knock-down carpenters square the combination of a blade having a channel extending across one facey thereof, and having one edge of the blade beveled at an acute angle to the face of the channel therehaving a channel extending across the complementary face thereof, and

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biomedical Technology (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Mechanical Engineering (AREA)
  • Surgical Instruments (AREA)

Description

A. A. HARIE.
KNOGKDOWN GARPBNTEES SQUARE.
APPLICATION, FILED MAR.2. 1912.
Patented Dee. 31, 1912.
lililll lll-Wl 5 7 lllllll llilil'` rlx M'hesses:
lo rn ya ALBERT A. HARVIE, or OTTUMWA, IOWA.
KNOCKD OWN CARPENTER S S QUARE.
To all whom it may concern.:
Be it known that I, ALBERT A. HARVE, a citizen of the UnitedStates, residing at Ottumwa,rin the county of l/Vapello and State of Iowa,'have invented certain new and useful Improvements in Knockdown Carpenters Squares, of which the following is a specication. Y
This invention relates to a knock-down carpenters square; that is to a carpenters square, in which the blade and tongue are made separate, but in which means are provided for joining them together and securing them at right angles to each other.
The application has particular reference to that class of knockdown.square, in which the tongue and blade each constitutes practically a straight piece of material, so that the two parts can be easily packed into a carpenters kit, and can be easily manufactured.
The present inventionhas reference particularly to the means for joining the tongue and blade together. For this purpose, I desire to provide a locking arrangement, so that by tightening a single screw or nut the two elements will be rigidly joined together at exactly the proper angle.-
Other objects and uses will appear from a detailed description of the invention which consists in the features of construction and combination of parts hereinafter described and claimed.
In the drawing, Figure l shows a face view of the corner of the square, the tongue and blade being locked together; Fig. 2 shows a face view of the end of a tongue disengaged from the blade; Fig. 3 shows a face view of the end of the blade disengaged from the tongue; Fig. 4 is a section taken on the line 4 4 of Fig. 1, looking in the direction of the arrows; and Fig. 5 is a section taken on the line of Fig. l, also looking in the direction of the arrows.
In the drawings, the numeral 6 designates the blade of the square, and the numeral 7 designates the tongue. In the construction illustrated, I have shown the locking member as being applied to the tongue, and other elements being correspondingly formed. It will soon be apparent, however, that the arrangement might be reversed, and that it is not necessary that the locking member should be applied to the tongue. In the construction illustrated, Va channel 8 is formed across the blade, the same having its Specication of Letters Patent.
Application iield March 2, 1912. Serial No. 681,138.
Patented Dec. 31,1912.
side walls 9 and `10 beveled outwardly to receive the edges of the end of the tongue. A notch 11 is cut in from the outer edge of the blade, the same having its edge 12 beveled at an acute angle to the channel of the blade. There 1s provided a channel 13 across the face of the tongue, the edge 14C of said channel being undercut to match up with the edge l2 of the blade. The end portion 15 of the tongue is of proper size to seat nicely into the notch l1. The edges 16 and 17 of the tongue should be beveled to seat accurately against the faces 9 and l0 of the channel in the blade, and to make tight contact with them before the faces of the channels in the tongue and blade come together. It is preferred also that the edge 18 of the blade should Vbe undercut slightly, the edge 19 of the tongue being cut at a similar angle.
By forming the parts as above stated, and proportioning them .in substantially the vmanner stated, when the locking screw is tightened it will tend to wedge the blade over sidewise to bring its edge l2 tightly against the edge 14 ofthe tongue. Also by reason of the bevel on the head of the screw, the side of the blade adjacent the screw will be-down toward the tongue so as to seat the ` side walls 9 and 10 of the blade tightly and squarely against the edges 16 and 17 of the tongue.
I provide a locking device for holding the two elements together after the tongue has been hooked into the blade. The preferred construction, that illustrated, comprises a headed screw 20 threaded into the tongue, and having its head 21 of a size to overlie a portion of the blade. It is preferred that this head should be beveled, as shown in Fig. 5, so that by threading the screw tightly into place the elements will be drawn together, and at the same time there will be a tendency to force the blade sidewise so as to insure a tight contact between the edges 12 and 14. A notch 22 should preferably be formed in the blade to receive the overlying portion of the screw. In order to permit the square to be knockeddown without having to completely Withdraw the screw, the head of the latter may be cut away in the portion 23, so that by rotating the screw into the position shown in Fig. 2, the blade can be unhooked from the tongue.
As before stated, it is not necessary that the locking member should be applied to to engage the tongue, ment might in this case other Words, the tongue, and the element 7 the blade.
I claim: a
l 1. In a knockdown carpenters square, the combination of a blade having a channel extending across one of its faces, and having the side Walls of the channel outwardly beveled, and having the edge of the .channel beveled at an -aoute angle to the n face thereof, a tongue having a channel extending across the complementary face thereof, and having the edges o-f the tongue beveled to correspond to the side Walls of the channel of the blade, and having the edge of the'channel of the tongue undercut the edge of the channel of the means for locking the tongue and blade together adjacent one edge of the the tongue being of the channel of the blade that the edges of the tongue enthe' edges of the blade channel before faces of the channels come into conblade, and
channel of the tongue, such Width With respect to gage the tact, substantially as described.
' 2. In a knock-down carpenters square, the combination of a blade having a channel extending across one facey thereof, and having one edge of the blade beveled at an acute angle to the face of the channel therehaving a channel extending across the complementary face thereof, and
of, a tongue Copies of this patent may be obtained for as it is obvious that the arrange-y be reversed, the locking member being appliedy to. the blade. InV the element 6 might be called having one edge Vof said channel undercut "to Aengage the acute edge of the blade, and a headed screw onV the tongue having the head thereof overlying the adjacent edge of the blade and adapted When threaded 'cinto place to draw the tongue and blade together and the acute edgethereof into rm engagement vWith the undercutedge of the tongue channel, substantially as described.
3. In a knockdovvn carpenters square, the combination of a'blade having a chanan acute angle to the face of the channel thereof, a tongue having a channel extending across the complementary face thereof, and having one edge of the channel of the ALBERT A. Haavm.
Witnesses EMMET A. WORK, E. J. WORK.
ve cents each, by addressing the Commissioner of Patents,
Washington, D. C.
force the blade sidewise to bring nel extending across one face thereof, and having one edge of the blade extending at tongue undercut to engage the acute edge
US68113812A 1912-03-02 1912-03-02 Knockdown carpenter's square. Expired - Lifetime US1049299A (en)

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US68113812A US1049299A (en) 1912-03-02 1912-03-02 Knockdown carpenter's square.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4367970A (en) * 1979-10-05 1983-01-11 Franz Louis J Die insert lock screws

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4367970A (en) * 1979-10-05 1983-01-11 Franz Louis J Die insert lock screws

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