US3829053A - Tripod supporting a framing table for concrete works - Google Patents

Tripod supporting a framing table for concrete works Download PDF

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Publication number
US3829053A
US3829053A US00286961A US28696172A US3829053A US 3829053 A US3829053 A US 3829053A US 00286961 A US00286961 A US 00286961A US 28696172 A US28696172 A US 28696172A US 3829053 A US3829053 A US 3829053A
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US
United States
Prior art keywords
jack
frame
vertical
tripod
support members
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
US00286961A
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English (en)
Inventor
J Bournazel
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.)
IND DU MATERIEL INDUMAT SOC PO
SOC POUR L IND DU MATERIEL INDUMAT FR
Original Assignee
IND DU MATERIEL INDUMAT SOC PO
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 IND DU MATERIEL INDUMAT SOC PO filed Critical IND DU MATERIEL INDUMAT SOC PO
Application granted granted Critical
Publication of US3829053A publication Critical patent/US3829053A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
    • E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
    • E04G11/48—Supporting structures for shutterings or frames for floors or roofs

Definitions

  • U S Cl 248/354 S A jack comprises an inverted tripod divided substan- [511 RC1. "F16! 13/00 tially in half in two portions of Substantially equal [58] Field 254/86 H height, the lower portion including a jack structure of small compass.
  • the disadvantage of the known embodiments consists of the complexity of the strutting which requires a lot of material and of which the placing and removal require skilled work-men. Besides, it is practically impossible to pass under the framing.
  • This invention copes with the above mentioned disadvantages, by providing an inverted tripod jack for supporting the framing, and of which the placing and removal quickly can be made, while having a small bearing portion on the ground.
  • FIG. I is a side elevational view of a tripod jack according to the invention.
  • FIG. 2 is a top view of the tripod jack of FIG. 1;
  • FIG. 3 is a plan view of the joint, taken along line III- III of FIG. 1;
  • FIG. 4 is an enlarged cross-section view taken along line IVIV of FIG. 1, and
  • FIG. 5 is an enlarged cross-section view of a variant of FIG. 4.
  • the tripod jack supporting a framing is composed of three rigid tubes, 1, 2, 3; the tubes 2 and 3 being disposed in substantially vertical planes, perpendicularly intersecting within tube 1 so that tube 3 is behind tube 1 and not shown in FIG. 1.
  • Tube 1 is vertical and tubes 2 and 3 are oblique or angularly disposed relative to tube 1 and they are joined through welding at the lower ends thereof to a polygonal plate 4.
  • the center of plate 4 comprises an internally threaded bore aligned with the tube 1.
  • the threaded bore adjustably receives a threaded rod 5 with fast pitch and threadably supporting a wing nut 6 having a plurality of wings 7.
  • the lower end of the threaded rod 5 is secured to a plate 8 for bearing on the ground.
  • FIG. 4 shows means for securing the tripod jack to v the transverse beam of a framing table.
  • Said means essentially are constituted by a U-shaped bracket 21 which straddles the transverse beam 24 of a framing and of which the two branches 21a and 21b are traversed by a threaded rod 22 with fast pitch, supporting at each of the two ends thereof a nut 23.
  • This U-shaped bracket 21 is supported on another U-shaped bracket 25 which relatively is turned by carries a bolt 26 for connection with the plates 18 and 20.
  • the tightening of the two fixing devices as above described is made by means of eyelet-nuts 30 which does not require any elaborate tools.
  • the jack in accordance with the invention it is divided at substantially half-height of the tripod and the two portions provided with a hinged joint enabling-folding of the lower portion of said tripod on the upper portion and to maintain it into said position by means of small chains 31, 32 with hooks 33, 34.
  • Said joint is shown in detail in FIG. 3 the three main tubes 1, 2, 3 of the tripod into two substantially equal half portions and having fixed on the ends of each half portion an L-shaped plate 35, 36 connecting the ends of tubes 1, 2 and I, 3.
  • the plates 35, 36 are connected together by one of two hinges 37, 38. According to the position of the spindle 39 of the hinge 38, the lower portion of the tripod can rotate in either way.
  • the locking of the joint is made by means of two bolts 40 and 41.
  • the invention thus creates a tripod jack supporting a framing for concrete works, the placing of which being very quickly made due to its simple fixing to the transverse and longitudinal beams of the framing and due to the easy adjustment of the height by means of the threaded rod or jack.
  • the framing has to be moved at the same level during works, just the jacks have to be loosened whereby the rollers bear on the ground said rollers having been previously set at the desired height and the framing table can be rolled along to the place designated for its reutilization.
  • the operation consisting of removing the whole framing, it frequently happens that said operation meets with some difficulties due to the presence of window basements or small walls.
  • tripods made according to the invention said difficulties are easily overcome due to the fact that the lower portion of the tripod can be folded back in the desired direction on the upper portion and be maintained into that position by the small chains.
  • the desired bearing surface four, six or more tripods are utilized. Due to the fact that the bearing surface on the ground of said tripods is relatively small, it is not difficult to manouver under the framing.
  • a jack comprising an inverted tripod frame including a substantially vertical support member and two angularly disposed upwardly extending support members having their lower ends rigidly fixed with the lower end portion of said vertical member, the upper ends of said members being rigidly secured to a load bearing member, jack means cooperative with the lower end of said frame for varying selectively the vertical location of said load bearing member, said frame being severed in termediate its length into two portions each having a bearing element secured to the ends of said support members, and hinge means connecting said bearing el ements to enable engagement between said bearing elements to position the portions of said support members in alignment and permit swinging of one frame portion jacks to constitute a composite assembly of jacks.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
US00286961A 1972-06-01 1972-09-07 Tripod supporting a framing table for concrete works Expired - Lifetime US3829053A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7219719A FR2188646A5 (enrdf_load_stackoverflow) 1972-06-01 1972-06-01

Publications (1)

Publication Number Publication Date
US3829053A true US3829053A (en) 1974-08-13

Family

ID=9099523

Family Applications (1)

Application Number Title Priority Date Filing Date
US00286961A Expired - Lifetime US3829053A (en) 1972-06-01 1972-09-07 Tripod supporting a framing table for concrete works

Country Status (10)

Country Link
US (1) US3829053A (enrdf_load_stackoverflow)
BE (1) BE796285A (enrdf_load_stackoverflow)
CA (1) CA970539A (enrdf_load_stackoverflow)
CH (1) CH571138A5 (enrdf_load_stackoverflow)
DE (2) DE7310674U (enrdf_load_stackoverflow)
FR (1) FR2188646A5 (enrdf_load_stackoverflow)
GB (1) GB1395654A (enrdf_load_stackoverflow)
IT (1) IT983669B (enrdf_load_stackoverflow)
LU (1) LU67154A1 (enrdf_load_stackoverflow)
NL (1) NL7307616A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130264452A1 (en) * 2012-04-10 2013-10-10 Peter Vanagan Fly form table with adjustable legs

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE32695E (en) * 1979-04-12 1988-06-14 Dasi Industries, Inc. Method and apparatus for treating fluent materials
US4591463A (en) * 1979-10-10 1986-05-27 Dasi Industries, Inc. Method and apparatus for treating liquid materials
US4419301A (en) 1979-10-10 1983-12-06 Dasi Industries, Inc. Method and apparatus for treating fluent materials
DE3014212A1 (de) * 1980-04-14 1981-10-15 Plettac Gmbh Stahlbau Und Gesenkschmiede, 5970 Plettenberg Baugeruest, insbesondere fahrgeruest
AU578176B2 (en) * 1986-02-20 1988-10-13 Speedy Gantry Hire Pty. Ltd. Modular gantry assemblies providing temporary pedestrian thoroughfares
DE9300735U1 (de) * 1993-01-21 1994-05-26 NOE-Schaltechnik Georg Meyer-Keller GmbH + Co, 73079 Süßen Decken-Klapptisch

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1259120A (en) * 1917-04-09 1918-03-12 John A Martin Tractor-trailer attachment.
US3096065A (en) * 1962-01-30 1963-07-02 Clede A Horn Trailer stabilizer
US3448998A (en) * 1967-01-18 1969-06-10 Strick Corp Foldable storable landing gear
US3655161A (en) * 1970-05-05 1972-04-11 John A Schueler Post shore
US3667730A (en) * 1970-05-08 1972-06-06 Alan F Kollmar Quick action jack
US3713259A (en) * 1971-04-16 1973-01-30 G Tkach Combination anchor and support utilized to secure a mobile home to an underlying foundation

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1259120A (en) * 1917-04-09 1918-03-12 John A Martin Tractor-trailer attachment.
US3096065A (en) * 1962-01-30 1963-07-02 Clede A Horn Trailer stabilizer
US3448998A (en) * 1967-01-18 1969-06-10 Strick Corp Foldable storable landing gear
US3655161A (en) * 1970-05-05 1972-04-11 John A Schueler Post shore
US3667730A (en) * 1970-05-08 1972-06-06 Alan F Kollmar Quick action jack
US3713259A (en) * 1971-04-16 1973-01-30 G Tkach Combination anchor and support utilized to secure a mobile home to an underlying foundation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130264452A1 (en) * 2012-04-10 2013-10-10 Peter Vanagan Fly form table with adjustable legs

Also Published As

Publication number Publication date
LU67154A1 (enrdf_load_stackoverflow) 1973-05-22
FR2188646A5 (enrdf_load_stackoverflow) 1974-01-18
CA970539A (en) 1975-07-08
IT983669B (it) 1974-11-11
GB1395654A (en) 1975-05-29
DE7310674U (de) 1977-03-03
DE2314023A1 (de) 1973-12-06
CH571138A5 (enrdf_load_stackoverflow) 1975-12-31
NL7307616A (enrdf_load_stackoverflow) 1973-12-04
BE796285A (fr) 1973-07-02

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