US3449882A - Reinforcing rod spacer - Google Patents

Reinforcing rod spacer Download PDF

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Publication number
US3449882A
US3449882A US633096A US3449882DA US3449882A US 3449882 A US3449882 A US 3449882A US 633096 A US633096 A US 633096A US 3449882D A US3449882D A US 3449882DA US 3449882 A US3449882 A US 3449882A
Authority
US
United States
Prior art keywords
rod
spacer
rods
chair
seat
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
US633096A
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English (en)
Inventor
Walter Ott
Edwin J Bigglestone
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.)
EDWIN J BIGGLESTONE
Original Assignee
EDWIN J BIGGLESTONE
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 EDWIN J BIGGLESTONE filed Critical EDWIN J BIGGLESTONE
Application granted granted Critical
Publication of US3449882A publication Critical patent/US3449882A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/20—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups of material other than metal or with only additional metal parts, e.g. concrete or plastics spacers with metal binding wires

Definitions

  • a chair spacer for accommodating rods of differing diameters for use in moulds is described.
  • the spacer is made of a resilient material and includes one portion which accepts rods of smaller diameter between a pair of finger members, and a second portion for retaining rods of larger diameter between the noses of a pair of linear arms.
  • This invention relates to a spacer or chair for the support and location of reinforcing rods for use particularly in moulded material. It has particular reference to the use in conjunction with reinforced concrete.
  • More recently metallic chairs or spacers have been used for supporting and standing off rods which must be spaced from the surfaces of the formwork so that when the concrete hardens the rods will have proper bonding and be protected from the weather.
  • Such spacers receive their respective rods which are retained by bending of parts of the spacer.
  • Other spacers are of a plastic in which the rod can sit, and within which it can be retained by wiring the rod onto the seat of the spacer.
  • Still other spacers are of plastic which is distorted to embrace the rod for which it is designed.
  • FIGURE 1 shows a side view of a spacer constructed in accordance with the teaching of the invention
  • FIGURE 2 shows a plan view of the device of FIG- URE 1 from above
  • FIGURE 3 shows a plan view of FIGURE 1 from below
  • FIGURE 4 shows the position taken up by a rod of one size when employed with the spacer of the invention
  • FIGURE 5 shows the position of a rod of a second size in the spacer.
  • the spacer chair comprises a base support part 1 and an upper rod encompassing part 2.
  • the base 1 comprises a pair of wing leg supports 5 extending in a direction transverse to the plane of FIGURE 1 (see FIGURES 2 and 3) for a seat 6.
  • Beneath the seat 6 additional support is formed by a web 7 which terminates in cross foot rail 8 in the same plane as the foot edge 9 of the wing legs S.
  • the web 7 is reinforced by the raising of shoulders 10 adjacently above the cross foot rail 8.
  • the seat 6 is shaped to define a V shaped crotch portion 15 with a fiat bottom shelf 14 and which is bounded by two resilient linear arms 16 rising from and integral with the seat 6.
  • the arms 16 each carry an inwardly extending nose 17.
  • the arms also includes downwardly extending fingers 18 which project inwardly and are spaced from one another at a distance somewhat less than that between the tips 19 of the noses 17.
  • the spacer is moulded of a resilient plastic material for preference, and may consist of nylon, ABS, polypropylene or polyethylene for example. Other similar tough resilient plastics may be employed depending upon the cost and availability.
  • FIGURE 4 the function of the spacer when accepting a small reinforcing rod 25 can be seen,
  • the rod 25 is entered into the upper portion 2 by passing it through the space 26 between the tips 19 of the nose portions 17.
  • the gap between the ends 27 of the fingers 18 is two small for the rod 25 to pass through freely, but the fingers are displaced downwards until they retract sufficiently to allow the rod to pass.
  • the rod finally comes to rest on the fiat bottom shelf 14 in the lower part of the crotch portion 15 being held in position by the tips 27 of the fingers 18.
  • the rod can not pass through the space 26 but deflects the noses 17 out of position by forcing back the arms 16 from the broken lined to the full lined position (FIGURE 5).
  • the fingers 18 which are much more flexible than the noses 17 and are bent downwards to allow the reinforcing rod 30 to be accommodated further up the crotch portion 15 against the fingers 18.
  • the actual position occupied by the rod 30 will of course depend upon its diameter.
  • the spacer is supplied with fingers 18 removed during manufacturing.
  • the rod deflects the noses 17 out of position and finds a final position in the V, dependent upon the size of the rod, 4but invariably resting on flat bottom 14.
  • the wing legs 5 are particularly valuable in giving strong broad feet to the structure so that there is little tendency to be canted or overturned when gripping a rod, and should the chair become displaced either longitudinally or axially of the rod.
  • the web 7 serves to tie the two wing legs 5 together so that they can not be splayed outwards (in the view of FIGURE 1) when carrying a heavy rod.
  • the shoulders 10 help this strengthening and further prevent any buckling of the web under heavy load or side pressure.
  • a chair spacer formed of a resilient material for accommodating rods from a range of differing diameters which comprises, a seat, a pair of triangular wing legs for said seat extending outwardly and downwardly from said seat, a web extending transversely between said legs and 3 beneath said seat, a pair of linear arms extending upwards and outwardly from said seat to define a crotch portion therebetween, a pair of inwardly directed nose members at the extremities of said arms, and a locating pair of defiectable inwardly directed finger members mounted on said arms and intermediate between said crotch and said nose portions, the clearance between the ends of said finger members being less than that between the tips of said nose members for locating rods of smaller diameter beneath said finger members and in said crotch portion and rods of larger diameter between said finger members and beneath said nose portions.
  • a chair as defined in claim 1 wherein said material is selected from the group consisting of nylon, ABS, polypropylene and polyethylene.
  • a chair as defined in claim 1 including a shoulder defined in said web and extending between said wing legs.
  • a chair as defined in claim 3 said web extending in a downward direction from said shoulder and forming a cross foot rail for said chair.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)
US633096A 1967-03-15 1967-04-24 Reinforcing rod spacer Expired - Lifetime US3449882A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA985282 1967-03-15

Publications (1)

Publication Number Publication Date
US3449882A true US3449882A (en) 1969-06-17

Family

ID=4142844

Family Applications (1)

Application Number Title Priority Date Filing Date
US633096A Expired - Lifetime US3449882A (en) 1967-03-15 1967-04-24 Reinforcing rod spacer

Country Status (3)

Country Link
US (1) US3449882A (de)
DE (1) DE1659192A1 (de)
GB (1) GB1155898A (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3673753A (en) * 1970-03-20 1972-07-04 George C Anderson Support device for concrete reinforcing bars
FR2121365A1 (de) * 1971-01-06 1972-08-25 Colombier Marc
US3694989A (en) * 1969-01-16 1972-10-03 Celmac Plasclip Ltd Support spacers for concrete reinforcement rods
US3916593A (en) * 1971-03-02 1975-11-04 Mats Folke Skold Spacer clip for joining and supporting crosswisely extending reinforcing bars
US4503649A (en) * 1981-05-14 1985-03-12 Joseph Sciortino Modular block structures for breakwaters, harbor dams and the like
US6557317B2 (en) * 2001-06-29 2003-05-06 Felix L. Sorkin Concrete reinforcing bar support
WO2004018773A2 (en) * 2002-08-21 2004-03-04 Trangsrud Julian P Gace spacer
US6732484B1 (en) 2002-12-05 2004-05-11 Bar-Lift, Inc. Chair support for metal reinforcements
US20050108976A1 (en) * 2003-11-26 2005-05-26 Trangsrud Julian P. Rebar spacer
US20080028717A1 (en) * 2006-08-01 2008-02-07 Sorkin Felix L Concrete reinforcing bar support with bar retainer members
US20160040442A1 (en) * 2014-08-07 2016-02-11 Hawkeye Concrete Products Co. Concrete products locking cage spacer

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2182077A (en) * 1985-10-24 1987-05-07 Wu Shean Shiun Concrete reinforcement supporting pad
FR2648523B3 (fr) * 1989-06-16 1991-09-13 Prunier Jean Dispositif de calage de fixation
GB201018830D0 (en) * 2010-11-08 2010-12-22 Glass Gareth K Anode assembly

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3209509A (en) * 1961-12-05 1965-10-05 Universal Builders Supply Co I Devices for concrete reinforcement
CH402358A (de) * 1963-07-16 1965-11-15 J Morf Hans Abstandhalter für Betoneisenstäbe
GB1033841A (en) * 1964-05-15 1966-06-22 Keith William Oliver Improvements in or relating to distance pieces for concrete reinforcing rods
US3290842A (en) * 1963-12-02 1966-12-13 Aberg Anders Bertil Distance piece for concretereinforcing rods
US3292335A (en) * 1963-03-20 1966-12-20 Stober Wilhelm Unitary, flexible spacers for concrete reinforcement
US3325959A (en) * 1964-05-04 1967-06-20 Torp Alf Chair supports for building constructions
US3348347A (en) * 1963-11-21 1967-10-24 Berry Ferdinand William Synthetic plastic spacer for concrete reinforcements

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3209509A (en) * 1961-12-05 1965-10-05 Universal Builders Supply Co I Devices for concrete reinforcement
US3292335A (en) * 1963-03-20 1966-12-20 Stober Wilhelm Unitary, flexible spacers for concrete reinforcement
CH402358A (de) * 1963-07-16 1965-11-15 J Morf Hans Abstandhalter für Betoneisenstäbe
US3348347A (en) * 1963-11-21 1967-10-24 Berry Ferdinand William Synthetic plastic spacer for concrete reinforcements
US3290842A (en) * 1963-12-02 1966-12-13 Aberg Anders Bertil Distance piece for concretereinforcing rods
US3325959A (en) * 1964-05-04 1967-06-20 Torp Alf Chair supports for building constructions
GB1033841A (en) * 1964-05-15 1966-06-22 Keith William Oliver Improvements in or relating to distance pieces for concrete reinforcing rods

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3694989A (en) * 1969-01-16 1972-10-03 Celmac Plasclip Ltd Support spacers for concrete reinforcement rods
US3673753A (en) * 1970-03-20 1972-07-04 George C Anderson Support device for concrete reinforcing bars
FR2121365A1 (de) * 1971-01-06 1972-08-25 Colombier Marc
US3916593A (en) * 1971-03-02 1975-11-04 Mats Folke Skold Spacer clip for joining and supporting crosswisely extending reinforcing bars
US4503649A (en) * 1981-05-14 1985-03-12 Joseph Sciortino Modular block structures for breakwaters, harbor dams and the like
US6557317B2 (en) * 2001-06-29 2003-05-06 Felix L. Sorkin Concrete reinforcing bar support
US6684595B1 (en) * 2001-06-29 2004-02-03 Felix L. Sorkin Intersectional reinforcing bar support
US6684594B1 (en) * 2001-06-29 2004-02-03 Felix L. Sorkin Intersectional reinforcing bar support
WO2004018773A2 (en) * 2002-08-21 2004-03-04 Trangsrud Julian P Gace spacer
WO2004018773A3 (en) * 2002-08-21 2004-05-27 Julian P Trangsrud Gace spacer
US6732484B1 (en) 2002-12-05 2004-05-11 Bar-Lift, Inc. Chair support for metal reinforcements
US20050108976A1 (en) * 2003-11-26 2005-05-26 Trangsrud Julian P. Rebar spacer
US7328538B2 (en) * 2003-11-26 2008-02-12 Trangsrud Julian P Rebar spacer
US20080028717A1 (en) * 2006-08-01 2008-02-07 Sorkin Felix L Concrete reinforcing bar support with bar retainer members
US7506482B2 (en) * 2006-08-01 2009-03-24 Sorkin Felix L Concrete reinforcing bar support with bar retainer members
US20160040442A1 (en) * 2014-08-07 2016-02-11 Hawkeye Concrete Products Co. Concrete products locking cage spacer
US9745752B2 (en) * 2014-08-07 2017-08-29 Hawkeyepedershaab Concrete Technologies, Inc. Concrete products locking cage spacer

Also Published As

Publication number Publication date
GB1155898A (en) 1969-06-25
DE1659192A1 (de) 1970-12-23

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