US989400A - Bolt-anchor. - Google Patents

Bolt-anchor. Download PDF

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Publication number
US989400A
US989400A US56864910A US1910568649A US989400A US 989400 A US989400 A US 989400A US 56864910 A US56864910 A US 56864910A US 1910568649 A US1910568649 A US 1910568649A US 989400 A US989400 A US 989400A
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Prior art keywords
bore
bolt
anchor
cylindrical
triangular
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US56864910A
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John Edward Ogden
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    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
    • F16B37/041—Releasable devices
    • F16B37/043—Releasable devices with snap action

Definitions

  • My invention relates to improvements in bolt anchors of the character employed as a means for securing objects to stone or brick walls or the like in which the material of which they are composed is not adapted to directly receive threaded bolts, and my invention relates particularly to that class of bolt anchor formed of comparatively soft metal such as lead or lead composition in which an unthreaded bore is employed, the bolt employed therewith being adapted to force a thread therein as it is forced into the anchor while simultaneously expanding the walls of the anchor to force the same into intimate contact with the walls of the hole in which it is received. 7
  • My invention consists in improvements in the form, shape, and configuration of the interior bore of soft metal anchors of the foregoing description, wherein a better hold is afiorded for the bolt and the surfaces are presented in the best form to the threaded portions of the bolt to themselves receive thread impressions.
  • My invention consists, first, in forming the bore in part cylindrical and in part polygonal, the former merging into the latter; second, in forming the bore either in whole or in part triangular in cross section.
  • the bore merges from a triangular form in cross section to a cylindrical form, but so far as I am aware it is broadly new to make the bore triangular in cross section either in whole or in part.
  • Figure 1 is a view in central longitudinal section through an anchor constructed in accordance with my invention, the bore thereof being in part cylindrical and in part triangular.
  • Fig. 2 is an end view of the same looking toward the inner end.
  • Fig. 3 is a view in longitudinal section through an anchor, the inner bore of which is triangular 1n cross section throughout the entire length, the said bore being tapered from one end to the other.
  • Fig. a is an end View of the same looking toward the inner end of the anchor.
  • Fig. 5 is a similar View to Fig. 4: except that the sectional area of the bore is uniform throughout.
  • Fig. 6 is an end view of the same.
  • Fig. 1 is a view in central longitudinal section through an anchor constructed in accordance with my invention, the bore thereof being in part cylindrical and in part triangular.
  • Fig. 2 is an end view of the same looking toward the inner end.
  • Fig. 3 is a view in longitudinal section through an anchor, the inner bore of which is triangular 1
  • FIG. 7 is a view in central longitudinal section through an anchor in which a portion of the bore is cylindrical and the remainder is hexagonal in transverse section.
  • Fig. 8 is an end view of the same looking toward the inner end of the anchor.
  • Fig. 9 is an end View of the same looking toward. the outer end of the anchor.
  • the same comprises a shell having a longitudinal bore therethrough, the portion nearer the outer end being cylindrical as at 10, and the remaining portion being triangular in transverse section as at 11.
  • the triangular portion of the bore is gradually reduced from the outer toward the inner end and the size of the triangle is such that a circumscribed circle would be greater than the diameter of the portion 10, while an inscribed circle would be less.
  • a bolt is inserted in the cylindrical portion 10 the same not only forms a means by which the end of the bolt will be guided toward the polygonal portion, but by reason of the fact that the cylindrical portion merges into the polygonal portion it will actually form a means by which the threads may be gradually started at the approach end of the polygonal portion.
  • the portion other than the cylindrical portion of the bore may be of various polygonal forms in transverse section, and in Figs. 7 8, and 9 I have shown the same as hexagonal in form.
  • the triangular form of bore is the best form for the shells, for many reasons, in that it presents the fewest number of sides possible where every side is utilized; it presents a threepoint form of support for the bolt such as best tends to centralize the bolt and keep it from drifting; and large clearance spaces are formed between the surfaces which engage the bolt, into which metal, cut away by the action of the bolt, may be received, thereby preventing it from filling the bore, jamming the bolt and causing the threads formed in the shell to be mutilated, scored, or stripped.
  • Fig. 3 I have shown a shell in which the bore is of triangular form throughout, the same being slightly tapered from end to end, while in Fig. 5 I have shown a form in which the bore is triangular in cross section but of the same size from end to end.
  • a bolt anchor comprising an expansible shell provided with a longitudinal bore the walls of which are arranged for direct coaction with a threaded bolt, a portion of the said bore being substantially cylindrical and the remaining portion thereof being polygonal in cross section, the two portions merging the one into the other.
  • a bolt anchor comprising an expansible shell provided with a longitudinal bore the walls of which are arranged for direct coaction with a threaded bolt, a portion of the bore being substantially cylindrical and the remaining portion thereof being polygonal in cross section, the polygonal portion being of gradually reduced diameter from the point where it connects with the cylindrical portion toward the opposite end of the shell, the said cylindrical and polygonal portions merging the one into the other.
  • a bolt anchor comprising an expansible shell provided with a longitudinal bore the walls of which are arranged for direct coaction with a threaded bolt, a portion of the said bore being substantially cylindrical and the remaining portion thereof being triangular in cross section, the two portions merging the one into the other.
  • a bolt anchor comprising an expansible shell provided with a longitudinal bore the walls of which are arranged for direct coaction with a threaded bolt, a portion of the said bore being substantially cylindrical and the remaining portion thereof being triangular in cross section, the triangular portion being of gradually reduced diameter from the point where it connects with the cylindrical portion toward the opposite end of the shell, the said cylindrical and triangular portions merging the one into the other.
  • a bolt anchor comprising an expansible shell provided with a longitudinal bore the walls of which are arranged for direct coaction with a threaded bolt, a portion of the said bore being substantially cylindrical and the remaining portion thereof being polygonal in cross section, the two portions merging the one into the other, the cross sectional area of the polygonal portion of the bore being such that an inscribed circle is of smaller diameter than the diameter of the cylindrical portion of the bore and the diameter of a circumscribed circle is greater than the diameter of the said cylindrical port-ion.
  • a bolt anchor comprising an expansible shell provided with a longitudinal bore the walls of which are arranged for direct coaction with a threaded bolt, a portion of the said bore being substantially cylindrical and the remaining portion thereof being polygonal in cross section, the polygonal portion being of gradually reduced diameter from the point where it connects with the cylindrical portion toward the opposite end of the shell, the said cylindrical and polygonal portions merging the one into the other, the cross sectional area of the polygonal portion at its point of greatest size being such that the diameter of an inscribed circle will be less than the diameter of the cylindrical portion of the bore and the diameter of a circumscribed circle will be greater than the diameter of the said cylindrical portion.
  • a bolt anchor comprising an expansible shell provided with a longitudinal bore the walls of which are arranged for direct coaction with a threaded bolt, a portion of the said bore being substantially cylindrical and the remaining portion thereof being triangular in cross section, the two portions merging the one into the other, the cross sectional area. of the triangular portion of the bore being such that the diameter of an inscribed circle will be less than the diameter of the cylindrical portion of the bore and the diameter of a circumscribed circle will be greater than the diameter of the said cylindrical portion of the bore.
  • a bolt anchor comprising an expansible shell provided with a longitudinal bore the walls of which are arranged for direct coaction with a threaded bolt, a portion of the said bore being substantially cylindrical and the remaining portion thereof being triangular in cross section, the triangular portion being of gradually reduced diameter from the point where it connects with the cylindrical portion toward the opposite end of the shell, the said cylindrical and triangular portions merging the one into the other, the cross sectional area of the triangular portion of the bore at its point of greatest area being such that the diameter of an inscribed circle will be less than the diam-eter of the cylindrical portion of the bore and the diameter of a circumscribed circle will be greater than the diameter of the said cylindrical portion of the bore.

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  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
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Description

J. E. OGDEN.
BOLT ANCHOR. APPLICATION FILED JUNE 24, 1910.
989,400, Patented Apr. 11-, 1911.
:42 TTORNEY I-NVENTOR ii .lQ.
JOHN EDWARD OGDEN, 0F BROOKLYN, NEW YORK.
BOLT-ANCHOR.
Specification of Letters Patent.
Patented Apr. 11, 1911.
Application filed June 24, 1910. Serial No. 568,649.
' To all whom it may concern:
Be it known that I, JOHN EDWARD OGDEN, a citizen of the United States of America, and a resident of the borough of Brooklyn, county of Kings, and State of New York, have invented certain new and useful Improvements in Bolt-Anchors, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof.
My invention relates to improvements in bolt anchors of the character employed as a means for securing objects to stone or brick walls or the like in which the material of which they are composed is not adapted to directly receive threaded bolts, and my invention relates particularly to that class of bolt anchor formed of comparatively soft metal such as lead or lead composition in which an unthreaded bore is employed, the bolt employed therewith being adapted to force a thread therein as it is forced into the anchor while simultaneously expanding the walls of the anchor to force the same into intimate contact with the walls of the hole in which it is received. 7
My invention consists in improvements in the form, shape, and configuration of the interior bore of soft metal anchors of the foregoing description, wherein a better hold is afiorded for the bolt and the surfaces are presented in the best form to the threaded portions of the bolt to themselves receive thread impressions.
My invention consists, first, in forming the bore in part cylindrical and in part polygonal, the former merging into the latter; second, in forming the bore either in whole or in part triangular in cross section. Preferably the bore merges from a triangular form in cross section to a cylindrical form, but so far as I am aware it is broadly new to make the bore triangular in cross section either in whole or in part.
In order that my invention'may be thoroughly understood, I will now proceed to describe certain embodiments thereof, having reference to the accompanying drawings illustrating the same, and will then pointout the novel features in claims.
In the drawings: Figure 1 is a view in central longitudinal section through an anchor constructed in accordance with my invention, the bore thereof being in part cylindrical and in part triangular. Fig. 2 is an end view of the same looking toward the inner end. Fig. 3 is a view in longitudinal section through an anchor, the inner bore of which is triangular 1n cross section throughout the entire length, the said bore being tapered from one end to the other. Fig. a is an end View of the same looking toward the inner end of the anchor. Fig. 5 is a similar View to Fig. 4: except that the sectional area of the bore is uniform throughout. Fig. 6 is an end view of the same. Fig. 7 is a view in central longitudinal section through an anchor in which a portion of the bore is cylindrical and the remainder is hexagonal in transverse section. Fig. 8 is an end view of the same looking toward the inner end of the anchor. Fig. 9 is an end View of the same looking toward. the outer end of the anchor.
Referring first of all to the anchor shown in Figs. 1 and 2, the same comprises a shell having a longitudinal bore therethrough, the portion nearer the outer end being cylindrical as at 10, and the remaining portion being triangular in transverse section as at 11. The triangular portion of the bore is gradually reduced from the outer toward the inner end and the size of the triangle is such that a circumscribed circle would be greater than the diameter of the portion 10, while an inscribed circle would be less. hen a bolt is inserted in the cylindrical portion 10 the same not only forms a means by which the end of the bolt will be guided toward the polygonal portion, but by reason of the fact that the cylindrical portion merges into the polygonal portion it will actually form a means by which the threads may be gradually started at the approach end of the polygonal portion. So far as this feature of my invention is concerned the portion other than the cylindrical portion of the bore may be of various polygonal forms in transverse section, and in Figs. 7 8, and 9 I have shown the same as hexagonal in form. I have found, however, that the triangular form of bore is the best form for the shells, for many reasons, in that it presents the fewest number of sides possible where every side is utilized; it presents a threepoint form of support for the bolt such as best tends to centralize the bolt and keep it from drifting; and large clearance spaces are formed between the surfaces which engage the bolt, into which metal, cut away by the action of the bolt, may be received, thereby preventing it from filling the bore, jamming the bolt and causing the threads formed in the shell to be mutilated, scored, or stripped.
In Fig. 3 I have shown a shell in which the bore is of triangular form throughout, the same being slightly tapered from end to end, while in Fig. 5 I have shown a form in which the bore is triangular in cross section but of the same size from end to end.
\Vhat I claim is:
1. A bolt anchor comprising an expansible shell provided with a longitudinal bore the walls of which are arranged for direct coaction with a threaded bolt, a portion of the said bore being substantially cylindrical and the remaining portion thereof being polygonal in cross section, the two portions merging the one into the other.
2. A bolt anchor comprising an expansible shell provided with a longitudinal bore the walls of which are arranged for direct coaction with a threaded bolt, a portion of the bore being substantially cylindrical and the remaining portion thereof being polygonal in cross section, the polygonal portion being of gradually reduced diameter from the point where it connects with the cylindrical portion toward the opposite end of the shell, the said cylindrical and polygonal portions merging the one into the other.
3. A bolt anchor comprising an expansible shell provided with a longitudinal bore the walls of which are arranged for direct coaction with a threaded bolt, a portion of the said bore being substantially cylindrical and the remaining portion thereof being triangular in cross section, the two portions merging the one into the other.
4. A bolt anchor comprising an expansible shell provided with a longitudinal bore the walls of which are arranged for direct coaction with a threaded bolt, a portion of the said bore being substantially cylindrical and the remaining portion thereof being triangular in cross section, the triangular portion being of gradually reduced diameter from the point where it connects with the cylindrical portion toward the opposite end of the shell, the said cylindrical and triangular portions merging the one into the other.
5. A bolt anchor comprising an expansible shell provided with a longitudinal bore the walls of which are arranged for direct coaction with a threaded bolt, a portion of the said bore being substantially cylindrical and the remaining portion thereof being polygonal in cross section, the two portions merging the one into the other, the cross sectional area of the polygonal portion of the bore being such that an inscribed circle is of smaller diameter than the diameter of the cylindrical portion of the bore and the diameter of a circumscribed circle is greater than the diameter of the said cylindrical port-ion.
A bolt anchor comprising an expansible shell provided with a longitudinal bore the walls of which are arranged for direct coaction with a threaded bolt, a portion of the said bore being substantially cylindrical and the remaining portion thereof being polygonal in cross section, the polygonal portion being of gradually reduced diameter from the point where it connects with the cylindrical portion toward the opposite end of the shell, the said cylindrical and polygonal portions merging the one into the other, the cross sectional area of the polygonal portion at its point of greatest size being such that the diameter of an inscribed circle will be less than the diameter of the cylindrical portion of the bore and the diameter of a circumscribed circle will be greater than the diameter of the said cylindrical portion.
7. A bolt anchor comprising an expansible shell provided with a longitudinal bore the walls of which are arranged for direct coaction with a threaded bolt, a portion of the said bore being substantially cylindrical and the remaining portion thereof being triangular in cross section, the two portions merging the one into the other, the cross sectional area. of the triangular portion of the bore being such that the diameter of an inscribed circle will be less than the diameter of the cylindrical portion of the bore and the diameter of a circumscribed circle will be greater than the diameter of the said cylindrical portion of the bore. k
8. A bolt anchor comprising an expansible shell provided with a longitudinal bore the walls of which are arranged for direct coaction with a threaded bolt, a portion of the said bore being substantially cylindrical and the remaining portion thereof being triangular in cross section, the triangular portion being of gradually reduced diameter from the point where it connects with the cylindrical portion toward the opposite end of the shell, the said cylindrical and triangular portions merging the one into the other, the cross sectional area of the triangular portion of the bore at its point of greatest area being such that the diameter of an inscribed circle will be less than the diam-eter of the cylindrical portion of the bore and the diameter of a circumscribed circle will be greater than the diameter of the said cylindrical portion of the bore.
JOHN EDWARD OGDEN.
Vitnesses:
JAooB ISLER, CHAS. V. HEMSTREET.
Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,
Washington, D. 0. i V
US56864910A 1910-06-24 1910-06-24 Bolt-anchor. Expired - Lifetime US989400A (en)

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