US3099108A - Anchor for securing electrical fixtures and the like to concrete walls - Google Patents

Anchor for securing electrical fixtures and the like to concrete walls Download PDF

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Publication number
US3099108A
US3099108A US809668A US80966859A US3099108A US 3099108 A US3099108 A US 3099108A US 809668 A US809668 A US 809668A US 80966859 A US80966859 A US 80966859A US 3099108 A US3099108 A US 3099108A
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Prior art keywords
tube
anchor
concrete
spike
concrete walls
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US809668A
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William F Kalkbrenner
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
    • E04B1/4171—Nailable or non-threaded screwable elements
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
    • Y10S411/922—Nail, spike or tack having locking device
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S411/00—Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
    • Y10S411/923—Nail, spike or tack having specific head structure

Definitions

  • This invention is a novel form of anchor for attaching electrical fixtures to conc rete walls.
  • the anchor of the present invention comprises an elongated tube provided on its exterior with radially projecting ridges to preclude it from being withdrawn from hardened concrete in which it is embedded.
  • the tube is provided with an interior bore through which an attaching spike may be passed to secure it to the form.
  • the spike is provided at one end with a non-circular head from which is spaced a flange to close the corresponding end of the tube when the parts are assembled and adjacent the flange and within the confines of the tube said spike has a weakened portion so that the portion of the spike which extends into the form may be removed by twisting it free at the weakened portion after the form is removed.
  • the interior of the tube is so formed as to facilitate the threading into said tube of a self threading screw, used to secure an electrical fixture to the anchor after the concrete of the wall in which the anchor is embedded is set.
  • An important feature of this invention is the ease with which the requisite number of these anchors may be attached to the form prior to the pouring of the concrete.
  • FIG. 1 is a side elevation of the preferred form of tube portion of an anchor embodying the present invention.
  • FIG. 2 is a plan view of the tube portion shown in FIG. 1.
  • FIG. 3 shows the tube portion resting on a form.
  • FIG. 4 is a view of the spike adapted to be passed through the tube portion to secure it to the form.
  • FIG. 5 is a plan view of the spike.
  • FIG. 6 shows the tube portion secured to the form by the spike.
  • FIG. 7 shows the parts as they appear after the concrete has been poured and set and the form removed. This figure additionally shows a self threading screw to cooperate with the anchor for the securing of an electric fixture thereto.
  • FIG. 1 designates a hollow cylindrical tube. It is preferably made of some metal, e.g., aluminum, which may be readily tapped by a conventional self tapping screw.
  • the tube is provided on its exterior with crossing raised helical ridges 2, adapted to firmly grip the concrete to hold the tube in place after the concrete has set. These ridges preferably extend for the full length of the tube.
  • the interior passage or bore through the tube is preferably shaped as shown in FIG. 2 to provide annularly spaced apart projections, such as beads 3, which extend for the full length of the tube.
  • the purpose of these projections is to facilitate the entry of a self tapping screw 4, such as shown in FIG. 7.
  • a self tapping screw 4 such as shown in FIG. 7.
  • the spike; generally indicatedby the referencecharacter 5; is shown best in FIGS. l-w'a'ndfi. Its shank has two parts 6'-and7 axially connected to one another by'a weakened portion- 8; The lower end 'of'the part 6- is pointed as-at 9"and adjacent to the point are swedged and flattened fins 10.
  • the part7 of the' spike is provided at it'sfr'e end with a driving head *11 shown .asoval m nor-5, although it may be square or any other non-circular sh'a'pe which will preclude the rotation of the part 7 within the concrete after the concrete is set.
  • a driving head *11 shown .asoval m nor-5, although it may be square or any other non-circular sh'a'pe which will preclude the rotation of the part 7 within the concrete after the concrete is set.
  • Intermediate the head 11 and the weakened portion 8 is an integral circular sealing flange 12 of overall diameter greater than the inner diameter of the tube so that, when the spike is driven into the form, this flange will act as a closure for the upper end of the tube and thus preclude the entrance of concrete into the latter.
  • the anchor of this invention is used in the following manner.
  • the tube 1 is placed in perpendicular relation to and upon the form F at a predetermined location where the screw of an electric fixture is required.
  • the spike 5 is then passed downwardly through the tube and hammered into the form F until the flange 12 rests upon the end of the tube remote from the form, as shown in FIG. 6. Having thus mounted the anchor on the form, the concrete is poured and allowed to set sufliciently for the removal of the form.
  • the entire tube and the spike remain embedded in the concrete, but with the lower end of the spike projecting beyond the face of the concrete.
  • a wrench, plier or claw hammer may be employed to grip the shank portion 6 at the fins 10 land, by rotation of said portion 6, the latter may be twisted free of the part 7 at the weakened portion 8 to release said part 6.
  • the part 6 of the spike may be then withdrawn from the anchor either by hand or by claw hammer or pinch bar according to the tightness of said part within the anchor, leaving the anchor embedded in the concrete C as shown in FIG. 7.
  • the latter is brought into cooperative relation with these anchors and screws 4 passed through the fixtures and into the several tubes to mount the fixture in position on the wall or ceiling, as the case may be.
  • the anchor of this invention may be easily and quickly incorporated in concrete by unskilled operatives and serves as a convenient, strong and eflicient support for any reasonable load that may be imposed thereon.
  • An anchor comprising: an open ended elongated tube one end of which is adapted to be seated on a form, said tube being of exterior shape to preclude its rotation in and withdrawal from concrete in which it is adapted to be embedded and having in its interior inwardly extending bead projections, said tube being of sutficiently soft material to permit the tapping of said projections by a self tapping screw, and a spike having a shank extending through the tube and adapted to be driven into said form, said shank being provided at one end with a non-circular driving head to keep the spike from turning in the concrete and, spaced from said driving head, a radial sealing flange of a diameter :greater than the internal cross section of the tube and adapted to seal one end of said tube against the entrance of concrete when said shank is ex tending through and beyond the other end of the tube, said spike being provided between the sealing flange and its free end with a weakened section and also having near the latter end a portion of non-circular cross section which when rotated after

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)

Description

W. F. KALKBRENNER FOR SECURING ELECTRICAL F 3,099,108 IXTURES July 30, 1963 ANCHOR AND THE LIKE T Filed Apr 0 CONCRETE WAL i1 29, 1959 INVENTOR WILL/QM F KQLKBEEN/VEP BY cmwzm W ATTORNEY United States Patent 3,099,108 ANCHOR FOR SECURING ELECTRICAL THE T0 E CRE WALLS. F. Kalkbrenner, Mus'taito Road; Katonah, N. J Filedzarpi'":29;1959;S'er.11618955668 '4' -1 Claimr (Cl. '50- 7'1) This invention is a novel form of anchor for attaching electrical fixtures to conc rete walls. The object of the in jention to provide a relatively inexpensive, "easily mounted anchor and one which will "be highlfefliient in the carrying out of its intended purposes.
In its preferred practical form the anchor of the present invention comprises an elongated tube provided on its exterior with radially projecting ridges to preclude it from being withdrawn from hardened concrete in which it is embedded. The tube is provided with an interior bore through which an attaching spike may be passed to secure it to the form. The spike is provided at one end with a non-circular head from which is spaced a flange to close the corresponding end of the tube when the parts are assembled and adjacent the flange and within the confines of the tube said spike has a weakened portion so that the portion of the spike which extends into the form may be removed by twisting it free at the weakened portion after the form is removed. The interior of the tube is so formed as to facilitate the threading into said tube of a self threading screw, used to secure an electrical fixture to the anchor after the concrete of the wall in which the anchor is embedded is set.
An important feature of this invention is the ease with which the requisite number of these anchors may be attached to the form prior to the pouring of the concrete.
Features of the invention, other than those adverted to, will be apparent from the hereinafter detailed description and appended claims when read in conjunction with the accompanying drawing.
The accompanying drawing illustrates one practical embodiment of the invention, but the construction therein shown is to be understood as illustrative, only, and not as defining the limits of the invention.
FIG. 1 is a side elevation of the preferred form of tube portion of an anchor embodying the present invention.
FIG. 2 is a plan view of the tube portion shown in FIG. 1.
FIG. 3 shows the tube portion resting on a form.
FIG. 4 is a view of the spike adapted to be passed through the tube portion to secure it to the form.
FIG. 5 is a plan view of the spike.
FIG. 6 shows the tube portion secured to the form by the spike.
FIG. 7 shows the parts as they appear after the concrete has been poured and set and the form removed. This figure additionally shows a self threading screw to cooperate with the anchor for the securing of an electric fixture thereto.
Referring to the drawings 1 designates a hollow cylindrical tube. It is preferably made of some metal, e.g., aluminum, which may be readily tapped by a conventional self tapping screw. The tube is provided on its exterior with crossing raised helical ridges 2, adapted to firmly grip the concrete to hold the tube in place after the concrete has set. These ridges preferably extend for the full length of the tube.
The interior passage or bore through the tube is preferably shaped as shown in FIG. 2 to provide annularly spaced apart projections, such as beads 3, which extend for the full length of the tube. The purpose of these projections is to facilitate the entry of a self tapping screw 4, such as shown in FIG. 7. By their use, small 3,099,108 Patented July 30, 1963 particles of metal incident to the tapping operation of the screwwhen screwed-intothe constricted passage on the tube," will'dodgebetweenthe beads so-that the screw may be' more readily-inserted." "The spike; generally indicatedby the referencecharacter 5;is shown best in FIGS. l-w'a'ndfi. Its shank has two parts 6'-and7 axially connected to one another by'a weakened portion- 8; The lower end 'of'the part 6- is pointed as-at 9"and adjacent to the point are swedged and flattened fins 10.
The part7 of the' spike is provided at it'sfr'e end with a driving head *11 shown .asoval m nor-5, although it may be square or any other non-circular sh'a'pe which will preclude the rotation of the part 7 within the concrete after the concrete is set. Intermediate the head 11 and the weakened portion 8 is an integral circular sealing flange 12 of overall diameter greater than the inner diameter of the tube so that, when the spike is driven into the form, this flange will act as a closure for the upper end of the tube and thus preclude the entrance of concrete into the latter. The anchor of this invention is used in the following manner.
The tube 1 is placed in perpendicular relation to and upon the form F at a predetermined location where the screw of an electric fixture is required. The spike 5 is then passed downwardly through the tube and hammered into the form F until the flange 12 rests upon the end of the tube remote from the form, as shown in FIG. 6. Having thus mounted the anchor on the form, the concrete is poured and allowed to set sufliciently for the removal of the form.
When the form is removed, the entire tube and the spike remain embedded in the concrete, but with the lower end of the spike projecting beyond the face of the concrete. Since the part 7 of the shank is anchored within the concrete by the non-circular head, a wrench, plier or claw hammer may be employed to grip the shank portion 6 at the fins 10 land, by rotation of said portion 6, the latter may be twisted free of the part 7 at the weakened portion 8 to release said part 6. The part 6 of the spike may be then withdrawn from the anchor either by hand or by claw hammer or pinch bar according to the tightness of said part within the anchor, leaving the anchor embedded in the concrete C as shown in FIG. 7.
Having installed in the concrete the requisite number of anchors to support the predetermined electrical fixture, the latter is brought into cooperative relation with these anchors and screws 4 passed through the fixtures and into the several tubes to mount the fixture in position on the wall or ceiling, as the case may be.
It will thus be apparent that the anchor of this invention may be easily and quickly incorporated in concrete by unskilled operatives and serves as a convenient, strong and eflicient support for any reasonable load that may be imposed thereon.
The foregoing detailed description sets forth the invention in its preferred practical form, but the invention is to be understood as fully commensurate with the appended claim.
Having thus fully described the invention, what I claim as new and desire to secure by Letters Patent is:
An anchor comprising: an open ended elongated tube one end of which is adapted to be seated on a form, said tube being of exterior shape to preclude its rotation in and withdrawal from concrete in which it is adapted to be embedded and having in its interior inwardly extending bead projections, said tube being of sutficiently soft material to permit the tapping of said projections by a self tapping screw, and a spike having a shank extending through the tube and adapted to be driven into said form, said shank being provided at one end with a non-circular driving head to keep the spike from turning in the concrete and, spaced from said driving head, a radial sealing flange of a diameter :greater than the internal cross section of the tube and adapted to seal one end of said tube against the entrance of concrete when said shank is ex tending through and beyond the other end of the tube, said spike being provided between the sealing flange and its free end with a weakened section and also having near the latter end a portion of non-circular cross section which when rotated after the tube has been embedded in concrete and the form removed will sever that end portion of the spike at said weakened section.
References Cited in the file of this patent UNIT ED STATES PATENTS 1,463,863 Zents Aug. 7, 1923 France Feb. 24, 1930
US809668A 1959-04-29 1959-04-29 Anchor for securing electrical fixtures and the like to concrete walls Expired - Lifetime US3099108A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3289379A (en) * 1963-10-09 1966-12-06 John L Watts Hanger insert for prestressed concrete
US3509670A (en) * 1969-03-07 1970-05-05 Richmond Screw Anchor Co Inc Structural concrete insert or anchor
US3531068A (en) * 1967-07-29 1970-09-29 Artur Fischer Anchoring element
US4279190A (en) * 1979-07-05 1981-07-21 Hummel Philip H Break away nail
US4443980A (en) * 1981-03-19 1984-04-24 Pennsylvania Insert Corporation Pulling iron enclosure
US5226770A (en) * 1991-12-09 1993-07-13 Watson Richard J Pipe hanger nut assembly
US5971688A (en) * 1998-08-20 1999-10-26 Powernail Co. Fastener for laminate flooring
US20140331474A1 (en) * 2013-05-08 2014-11-13 Arthur R. Walters, JR. Fastening device for driving double-headed fasteners
US9624954B2 (en) 2014-12-17 2017-04-18 Powernail Company Plural tapered fastener with material receiving inward region

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1463863A (en) * 1920-04-27 1923-08-07 Raymond P Zents Concrete insert
US1573151A (en) * 1924-03-17 1926-02-16 Alvin S Fishel Socket for expansion-bolt shields
US1701095A (en) * 1927-04-08 1929-02-05 Pittsburgh Steel Co Wire-fastening device
US1718438A (en) * 1926-10-18 1929-06-25 Thomas W Ross Screw anchor
FR682969A (en) * 1928-10-18 1930-06-04 Rawlplug Co Ltd Wall stamps
GB455280A (en) * 1935-04-13 1936-10-13 John Joseph Rawlings Improvements relating to wall plugs
US2172553A (en) * 1939-09-12 tripp
US2218099A (en) * 1938-12-20 1940-10-15 Richmond Screw Anchor Co Inc Form tie
US2370174A (en) * 1940-10-26 1945-02-27 Carl A Kinninger Wall form tie
US2412307A (en) * 1945-01-08 1946-12-10 Tatsch Richard Reinforcing spacer
US2874603A (en) * 1956-05-25 1959-02-24 William A Boettcher Nail with frangible extension

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2172553A (en) * 1939-09-12 tripp
US1463863A (en) * 1920-04-27 1923-08-07 Raymond P Zents Concrete insert
US1573151A (en) * 1924-03-17 1926-02-16 Alvin S Fishel Socket for expansion-bolt shields
US1718438A (en) * 1926-10-18 1929-06-25 Thomas W Ross Screw anchor
US1701095A (en) * 1927-04-08 1929-02-05 Pittsburgh Steel Co Wire-fastening device
FR682969A (en) * 1928-10-18 1930-06-04 Rawlplug Co Ltd Wall stamps
GB455280A (en) * 1935-04-13 1936-10-13 John Joseph Rawlings Improvements relating to wall plugs
US2218099A (en) * 1938-12-20 1940-10-15 Richmond Screw Anchor Co Inc Form tie
US2370174A (en) * 1940-10-26 1945-02-27 Carl A Kinninger Wall form tie
US2412307A (en) * 1945-01-08 1946-12-10 Tatsch Richard Reinforcing spacer
US2874603A (en) * 1956-05-25 1959-02-24 William A Boettcher Nail with frangible extension

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3289379A (en) * 1963-10-09 1966-12-06 John L Watts Hanger insert for prestressed concrete
US3531068A (en) * 1967-07-29 1970-09-29 Artur Fischer Anchoring element
US3509670A (en) * 1969-03-07 1970-05-05 Richmond Screw Anchor Co Inc Structural concrete insert or anchor
US4279190A (en) * 1979-07-05 1981-07-21 Hummel Philip H Break away nail
US4443980A (en) * 1981-03-19 1984-04-24 Pennsylvania Insert Corporation Pulling iron enclosure
US5226770A (en) * 1991-12-09 1993-07-13 Watson Richard J Pipe hanger nut assembly
US5971688A (en) * 1998-08-20 1999-10-26 Powernail Co. Fastener for laminate flooring
US6139238A (en) * 1998-08-20 2000-10-31 Powernail Co. Fastener for laminate flooring
US20140331474A1 (en) * 2013-05-08 2014-11-13 Arthur R. Walters, JR. Fastening device for driving double-headed fasteners
US9573260B2 (en) * 2013-05-08 2017-02-21 Arthur R. Walters, JR. Fastening device for driving double-headed fasteners
US9624954B2 (en) 2014-12-17 2017-04-18 Powernail Company Plural tapered fastener with material receiving inward region

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