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US3222030A - Floor structure elevating device - Google Patents

Floor structure elevating device Download PDF

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Publication number
US3222030A
US3222030A US383537A US38353764A US3222030A US 3222030 A US3222030 A US 3222030A US 383537 A US383537 A US 383537A US 38353764 A US38353764 A US 38353764A US 3222030 A US3222030 A US 3222030A
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United States
Prior art keywords
plate
inturned flanges
framing members
floor
lugs
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Expired - Lifetime
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US383537A
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William J Thorpe
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Unistrut Corp
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Unistrut Corp
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/024—Sectional false floors, e.g. computer floors
    • E04F15/02447—Supporting structures
    • E04F15/02452—Details of junctions between the supporting structures and the panels or a panel-supporting framework

Definitions

  • the present invention relates to elevated floor structures and more particularly to an improved means of providing a gridwork of framing members in an elevated position.
  • elevated and supplemental floor structures The recent increase in the use of computer and data processing equipment as well as similar heavy electronic equipment has greatly increased the use of elevated and supplemental floor structures.
  • the primary purpose of such a supplemental floor is to provide space between the floors for the complex power and transmission cables necessary for such equipment.
  • Such a supplemental floor structure must meet at least three major requirements. It must be capable of supporting heavy, unequally distributed weight loads. It must maintain absolute level floor conditions to insure proper equipment operation. And it must permit ready accessibility for servicing and rearrangement of the equipment. Provision for such a supplemental floor structure generally is made by providing an auxiliary gridwork of framing members supported on leveling jacks above the normal building floor and by the provision of rigidly structured, removable panels carried by the gridwork.
  • the present invention provides an improved elevated floor structure combination which includes leveling jacks and channel shaped structural members which form a supporting gridwork for carrying the removable panel members.
  • the leveling jack is provided with a supporting plate having a plurality of upwardly extending ears or lugs.
  • the channel shaped struts are arranged and supported on the supporting plate in a level, abutting relationship.
  • The'ears or lugs of the floor leveling jacks extend upwardly into the channels provided in the framing members and engage above inturned flanges provided in the framing members to securely lock the framing members against the face of the supporting plate.
  • FIG. 1 is a perspective view of an improved floor leveling jack and framing structure gridwork combination of the present invention
  • FIG. 2 is an exploded perspective view of the floor leveling jack illustrated in FIG. 1 and with the framing members removed,
  • FIG. 3 is an enlarged vertical sectional view taken substantially on line 3-3 of FIG. 1, and
  • FIG. 4 is a fragmentary detailed showing in dashed lines how a framing member first is set on the floor leveling jack of the present invention and in solid lines how it is locked thereto.
  • a preferred floor leveling jack is therein illustrated as comprising a framing member supporting plate 5 having perimetrically-integrated, locking lugs or ears 6.
  • the plate 5 is preferably secured to a bolt 7 mounting a nut 8 for telescopical adjustment on a post 9 fixed to a position base plate 10.
  • the supporting plate 5 is preferably provided with a planar horizontally extending supporting surface and is preferably constructed of a square section of heavy gage steel, perimetrical portions of which are struck up from the supporting surface to form the lugs or ears 6.
  • the lugs or ears 6 are preferably located substantially medially of each plate edge and extend above the supporting surface of the plate approximately one-half of an inch.
  • the opposite lateral edges of the lugs or ears 6 are formed with recesses 11 as best seen in FIG. 4.
  • the framing members 14 are each preferably in the form of elongated channel members having a pair of elongated parallel walls 13 joined by an elongated connecting section 17.
  • the free longitudinal edge of each of the walls 14 is bent inwardly to form short sections 16 substantially normal to the respective parallel walls 13 and substantially parallel to the section 17.
  • the free edges of the section 16 are preferably bent inwardly as at 12 to define flange portions 18.
  • the flange portions 18 are substantially parallel with the walls 13.
  • the framing members 14 are adapted to be carried on the supporting plate 5 with the surface of the sections 16 in engagement with and supported by the plate 5.
  • the ears or lugs 6 are dimensioned such that upon movement of the framing members 14 from the position shown in dashed lines in FIG. 4 to the position shown in solid lines the flange portions 18 of the framing members 14 engage beneath the outwardly extending portions of the lugs or ears 6 formed by the recesses 11 so that the framing members are securely locked to the supporting plate 5 of the floor-leveling jack.
  • a plurality of framing member 14 are securely locked to the supporting plate 5 in abutting relationship to provide a planar gridwork for supporting removable panels (not shown).
  • a nut 19 is secured to the underface of the plate 5.
  • the bolt 7 is screwed into the nut 19 and mounts the nut 8 for contactive positioning on the post 9 with the bolt 7 telescoped into the post 9.
  • the post 9 is preferably a short section of fairly heavy gage steel tubing bonded at the one end to the base plate 10 substantially centrally thereof.
  • the inside diameter of post 9 is enough larger than the outside diameter of the bolt 7 to permit the latter to easily telescope into the post 9.
  • the framing members 14 of the kind herein illustrated and described are preferably laid out on a building floor where the electronic equipment is to be installed for operation.
  • the floor leveling jacks then are assembled and set in place and the nut 8 adjusted to so dispose the plates that when the framing members 14 are secured in place the framework for the supplemental floor will be spaced the desired distance from the building floor.
  • the leveling jacks generally will be approximately 2 or 3 feet apart to accommodate the gridwork to the conventional panels especially structured for supplemental floors of this kind.
  • the longer framing members 14 will be set along a series of jacks with the inwardly turned flange portions 18 of the framing members 14 resting on the top rounded end of diametrically opposed lugs or ears 6 on the respective plates 5 as shown in dashed outline in FIG. 4.
  • a blow of a mallet on the framing member 14, directly over each plate 5, will spread the framing member walls 13 to displace the flange portions 18 at the point of contact with the corner of the lugs or ears 6, just enough to force the flange portions 18 down into the lug recesses 11 as shown in full outline in FIG. 4.
  • the short cross framing members 14 then may be set on one of the free lugs 6 of adjacent jacks and forced into locking engagement with the supporting plate 5 as wasdone with the longest framing members 14.
  • said plate having a plurality of lugs formed of portions struck upwardly from said plate and extending upwardly from said surface and into said recess, each of said lugs being provided with upper lateral outwardly extending portions dimensioned to embracively engage said free edges of said inturned flanges and to urge said inturned flanges against said surface of said plate,
  • a floor leveling jack and framing member combination comprising (a) a framing member supporting plate having a planar surface for supporting at least two of said framing members in a coplanar and abutting positioning,
  • said framing members each having a pair of longitudinally extending coplanar inturned flanges, the free edges of said inturned flanges being turned inwardly at substantially right angles to said inturned flanges to define a longitudinal recess therebetween,

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Floor Finish (AREA)

Description

Dec. 7, 1965 w. J. THORPE 3,222,030
FLOOR STRUCTURE ELEVATING DEVICE Filed June 22, 1964 I N VENTOR.
WILLIAM J. THORPE United States Patent 3,222,030 FLOOR STRUCTURE ELEVATING DE 16E William J. Thorpe, Dearborn, Mich, assignor to Unistrut Corporation, Wayne, Mich, a corporation of Michigan Filed June 22, 1964, Ser. No. 383,537 3 Claims. (Cl. 254-100) The present application is a continuation-in-part of my co-pending application Ser. No. 187,389 filed April 13, 1962 and now abandoned.
The present invention relates to elevated floor structures and more particularly to an improved means of providing a gridwork of framing members in an elevated position. The recent increase in the use of computer and data processing equipment as well as similar heavy electronic equipment has greatly increased the use of elevated and supplemental floor structures. The primary purpose of such a supplemental floor is to provide space between the floors for the complex power and transmission cables necessary for such equipment. Such a supplemental floor structure must meet at least three major requirements. It must be capable of supporting heavy, unequally distributed weight loads. It must maintain absolute level floor conditions to insure proper equipment operation. And it must permit ready accessibility for servicing and rearrangement of the equipment. Provision for such a supplemental floor structure generally is made by providing an auxiliary gridwork of framing members supported on leveling jacks above the normal building floor and by the provision of rigidly structured, removable panels carried by the gridwork.
It is apparent that to meet the first two of these requirements it is necessary to provide a means for securely locking the framing members making up the gridwork to the leveling jacks so that the supplemental flooring cannot be pulled away from the leveling jacks by remotely positioning heavy equipment to produce an unlevel floor. In addition to these requirements it is desirable that the means for securing the framing members to the leveling jacks be such that only a minimum of tools and skills are required to erect the flooring structure.
The present invention provides an improved elevated floor structure combination which includes leveling jacks and channel shaped structural members which form a supporting gridwork for carrying the removable panel members. The leveling jack is provided with a supporting plate having a plurality of upwardly extending ears or lugs. The channel shaped struts are arranged and supported on the supporting plate in a level, abutting relationship. The'ears or lugs of the floor leveling jacks extend upwardly into the channels provided in the framing members and engage above inturned flanges provided in the framing members to securely lock the framing members against the face of the supporting plate.
It is an object then of the present invention to improve elevated floor structures by providing an improved floor leveling jack and structural framing member combination assembled to provide a panel carrying gridwork to support heavy, unequally distributed weight loads and to maintain absolute level floor conditions.
It is another object of the present invention to prevent heavy unequally distributed weight loads on an elevated floor structure from pulling the gridwork forming framing members from the floor leveling jacks of such a structure by providing an improved means for securely locking the framing members to the supporting plate of the floor leveling jack.
It is still another object of the present invention to facilitate the erection and assembly of elevated floor structures by providing a floor leveling jack and fram- 3,222,030 Patented Dec. 7, 1965 ing structure gridwork combination in which a minimum of tools and skills are required to securely lock the jacks to the framing structure.
Still further objects and advantages of the present invention will readily occur to one skilled in the art to which the invention pertains upon reference to the following drawings in which like reference characters refer to like parts throughout the several views and in which,
FIG. 1 is a perspective view of an improved floor leveling jack and framing structure gridwork combination of the present invention,
FIG. 2 is an exploded perspective view of the floor leveling jack illustrated in FIG. 1 and with the framing members removed,
FIG. 3 is an enlarged vertical sectional view taken substantially on line 3-3 of FIG. 1, and
FIG. 4 is a fragmentary detailed showing in dashed lines how a framing member first is set on the floor leveling jack of the present invention and in solid lines how it is locked thereto.
Now referring to the drawing for a more detailed description of the present invention a preferred floor leveling jack is therein illustrated as comprising a framing member supporting plate 5 having perimetrically-integrated, locking lugs or ears 6. The plate 5 is preferably secured to a bolt 7 mounting a nut 8 for telescopical adjustment on a post 9 fixed to a position base plate 10.
The supporting plate 5 is preferably provided with a planar horizontally extending supporting surface and is preferably constructed of a square section of heavy gage steel, perimetrical portions of which are struck up from the supporting surface to form the lugs or ears 6. The lugs or ears 6 are preferably located substantially medially of each plate edge and extend above the supporting surface of the plate approximately one-half of an inch. The opposite lateral edges of the lugs or ears 6 are formed with recesses 11 as best seen in FIG. 4.
The framing members 14 are each preferably in the form of elongated channel members having a pair of elongated parallel walls 13 joined by an elongated connecting section 17. The free longitudinal edge of each of the walls 14 is bent inwardly to form short sections 16 substantially normal to the respective parallel walls 13 and substantially parallel to the section 17. The free edges of the section 16 are preferably bent inwardly as at 12 to define flange portions 18. The flange portions 18 are substantially parallel with the walls 13.
As best illustrated in FIG. 4 the framing members 14 are adapted to be carried on the supporting plate 5 with the surface of the sections 16 in engagement with and supported by the plate 5. The ears or lugs 6 are dimensioned such that upon movement of the framing members 14 from the position shown in dashed lines in FIG. 4 to the position shown in solid lines the flange portions 18 of the framing members 14 engage beneath the outwardly extending portions of the lugs or ears 6 formed by the recesses 11 so that the framing members are securely locked to the supporting plate 5 of the floor-leveling jack. In this way, as illustrated in FIG. 1, a plurality of framing member 14 are securely locked to the supporting plate 5 in abutting relationship to provide a planar gridwork for supporting removable panels (not shown).
A nut 19 is secured to the underface of the plate 5. The bolt 7 is screwed into the nut 19 and mounts the nut 8 for contactive positioning on the post 9 with the bolt 7 telescoped into the post 9. The post 9 is preferably a short section of fairly heavy gage steel tubing bonded at the one end to the base plate 10 substantially centrally thereof. The inside diameter of post 9 is enough larger than the outside diameter of the bolt 7 to permit the latter to easily telescope into the post 9.
In assembling and erecting the gridwork for the elevated floor structure of the present invention the framing members 14 of the kind herein illustrated and described are preferably laid out on a building floor where the electronic equipment is to be installed for operation. The floor leveling jacks then are assembled and set in place and the nut 8 adjusted to so dispose the plates that when the framing members 14 are secured in place the framework for the supplemental floor will be spaced the desired distance from the building floor. The leveling jacks generally will be approximately 2 or 3 feet apart to accommodate the gridwork to the conventional panels especially structured for supplemental floors of this kind.
Once the jacks have been properly located, the longer framing members 14 will be set along a series of jacks with the inwardly turned flange portions 18 of the framing members 14 resting on the top rounded end of diametrically opposed lugs or ears 6 on the respective plates 5 as shown in dashed outline in FIG. 4. A blow of a mallet on the framing member 14, directly over each plate 5, will spread the framing member walls 13 to displace the flange portions 18 at the point of contact with the corner of the lugs or ears 6, just enough to force the flange portions 18 down into the lug recesses 11 as shown in full outline in FIG. 4.
The longer runs of the framing members 14 being secured in place on the plates 5 of a series of jacks, the short cross framing members 14 then may be set on one of the free lugs 6 of adjacent jacks and forced into locking engagement with the supporting plate 5 as wasdone with the longest framing members 14.
In due course, the nut 8 on the respective jacks will be turned to bring the framework into perfect level for the subsequent setting of the floor panels and eventual installation of the electronic equipment.
It is apparent that an elevated floor structure has been provided which can be readily assembled with a minimum of tools and skills. Because the framing members 14 are securely locked to the support plate 5 by the lugs or ears 6, unequally distributed equipment cannot pull the framing members 14 upwardly away from the support plate 5 and thereby produce an unlevel floor condition. Further, since the framing members 14 are carried in a planar abutting relationship on the upper surface of the support plate 5 the provision of floor panels above the gridwork formed by the framing members 14 will provide a planar floor which can be readily adjusted by the leveling jacks to produce absolute level conditions.
It is also apparent that although I have described but a single embodiment of my invention many changes and modifications can be made therein without departing from the spirit of the invention as expressed by the appended claims.
I claim:
1. In combination (a) a pair of channel shaped framing members each having a pair of longitudinally extending coplanar inturned flanges, the free edges of said inturned flanges being turned inwardly at substantially right angles to said inturned flanges to define a longitudinal recess therebetween,
(b) a plate having a planar surface for supporting said framing members in abutting and substantially coplanar position,
(c) said plate having a plurality of lugs formed of portions struck upwardly from said plate and extending upwardly from said surface and into said recess, each of said lugs being provided with upper lateral outwardly extending portions dimensioned to embracively engage said free edges of said inturned flanges and to urge said inturned flanges against said surface of said plate,
(d) a positioning base plate, and
(e) a threaded bolt and nut connection interposed between said plates to aflect their vertical relationship.
2. A floor leveling jack and framing member combination comprising (a) a framing member supporting plate having a planar surface for supporting at least two of said framing members in a coplanar and abutting positioning,
(b) said framing members each having a pair of longitudinally extending coplanar inturned flanges, the free edges of said inturned flanges being turned inwardly at substantially right angles to said inturned flanges to define a longitudinal recess therebetween,
(c) means formed of portions struck upwardly from said plate and extending upwardly from said surface and into said recess, said struck upwardly portions being provided with upper lateral outwardly extending portions dimensioned to embracively engage said free edges of said inturned flanges and to urge said inturned flanges against said surface of said plate, and
' (d)1means for adjusting the vertical position of said p ate.
3. The combination as defined in claim 2 and in which said last mentioned means comprises (a) a positioning base plate, and
(b) a threaded bolt and nut connection interposed between said plates to effect their vertical spaced relationship.
References Cited by the Examiner is UNITED STATES PATENTS 2,495,870 1/1950 Soukup 24-204 X 3,150,748 9/1964 Liskey 18934 FOREIGN PATENTS 1,290,765 3/1962 France.
WILLIAM FELDMAN, Primary Examiner. MILTON S. MEHR, Examiner,

Claims (1)

1. IN COMBINATION (A) A PAIR OF CHANNEL SHAPED FRAMING MEMBERS EACH HAVING A PAIR OF LONGITUDINALLY EXTENDING COPLANAR INTURNED FLANGES, THE FREE EDGES OF SAID INTURNED FLANGES BEING TURNED INWARDLY AT SUBSTANTIALLY RIGHT ANGLES TO SAID INTURNED FLANGES TO DEFINE A LONGITUDINAL RECESS THEREBETWEEN, (B) A PLATE HAVING A PLANAR SURFACE FOR SUPPORTING SAID FRAMING MEMBERS IN ABUTTING AND SUBSTANTIALLY COPLANAR POSITION, (C) SAID PLATE HAVING A PLURALITY OF LUGS FORMED OF PORTIONS STRUCK UPWARDLY FROM SAID PLATE AND EXTENDING UPWARDLY FROM SAID SURFACE AND INTO SAID RECESS, EACH OF SAID LUGS BEING PROVIDED WITH UPPER LATERAL OUTWARDLY EXTENDING PORTIONS DIMENSIONED TO EMBRACIVELY ENGAGE SAID FREE EDGES OF SAID INTURNED FLANGES AND TO URGE SAID INTURNED FLANGES AGAINST SAID SURFACE OF SAID PLATE, (D) A POSITIONING BASE PLATE, AND (E) A THREADED BOLT AND NUT CONNECTION INTERPOSED BETWEEN SAID PLATES TO AFFECT THEIR VERTICAL RELATIONSHIP.
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