US1703499A - Collapsible building form - Google Patents

Collapsible building form Download PDF

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Publication number
US1703499A
US1703499A US251434A US25143428A US1703499A US 1703499 A US1703499 A US 1703499A US 251434 A US251434 A US 251434A US 25143428 A US25143428 A US 25143428A US 1703499 A US1703499 A US 1703499A
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plates
links
rod
collapsible
building form
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US251434A
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Edward B Selway
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G15/00Forms or shutterings for making openings, cavities, slits, or channels
    • E04G15/06Forms or shutterings for making openings, cavities, slits, or channels for cavities or channels in walls of floors, e.g. for making chimneys
    • E04G15/063Re-usable forms
    • E04G15/065Re-usable forms with mechanical means to modify the section

Definitions

  • EDWARD B sELwAY, or LEETSDALE, PENNSYLVANIA.
  • This invention relates to forms designed to be used in connection with the building of concrete floors, walls and roofs,.and particularly to a collapsible core or form designed to be used in forming hollow concretewalls,
  • the general object of thG-HIVGDUOH is to provide a form which'may bereadily re,
  • Figure 2 is a fragmentary elevation of the top ofthe form and studs
  • Figure 3 is a vertical sectional view of the form
  • Figure 1 is a transverse section on the line 44 of Figure 1;
  • Figure 5 is a fragmentary section on the line 55 of Figure 3;
  • Figure 6 is a fragmentary horizontalsee' tion takenfat one end of the form showing the form expanded;
  • the form comprises four steel plates 10, each having. at one endv the flange 11 extending at right angles to the corresponding plate 10.
  • Two of the plates are used for one side of the [form and two forthe other side and. the plates of each pair overlap, as shown in Figure 1, while the flanges of the plates overlap.
  • the plates 10 are each provided upon its inner face with an outwardly projecting stud bolt 12 having A further object is to provide a concrete a nut 13, the heads of these stud bolts being inserted in countersunk washers '14, the
  • Extending vertically of each form are length equal to or greater than the forms, and plvotally engaged with each collapsing rod are the links 16, these links 16 in turn.
  • Each rod 15 carries the outwardly projectmg bolt 17 upon which the inner ends of the links 16' are'pivoted, and eaehof these bolts carries the nut 18 and a washer 19 surrounding the head of the bolt,the washer and the bolt being welded to the correspondmg rod 15.
  • Stops 20 act to limit the downward movement of the links 16 so that when the links are forced downward to their full extent they Wlll' be in an approximately horizontal position and the sections of the form will be expanded to the fullest extent Obviously, when the rods 15 are drawnupward, the sections will be longitudinally contracted. r
  • binding bar-S 21 are disposed between one pair of plates 10 and the oppositepair of plates,..these binding bars extendlng in a diagonal direction. As illustrated, these binding bars engage atone end with the bolts 12 and are held by the nuts 13, While at. the other end they. engage 'Withthe bolts 17 of the opposite rod 15. .Thuslt is obviousmthat. when the rods 15 are pulled upward,they will not only act to these bars 21 will act to pull the sections toward each other so as to decrease the width of the form.
  • the free ends of thelinks 22 are pivotally connected to a rod 24:.
  • a stop 25 is mounted upon the flange 11 of the opposed plate 10 which limits the downward movement of the rod 24 to a position where-the links 22 are in a'horizontal position.
  • the links 22 acting through the rollers 23 will force the. sections of the form apart so as to increasethe width of v elements away from each other comprising links pivoted to one plate and having rollers engaging with the opposite plate, and means for shifting said links from or to a horizontal position.
  • a collapsible form for concrete including oppositely disposed, parallel form elements, means for spacing said elements from each other, means for longitudinally expanding or contracting said elen'ients or transversely expanding or contracting said elements, and guide bars mounted upon the elements on each face thereof toward the upper end, each guide bar having outwardly deflected portions adapted to ride over the studding.
  • a collapsible form for concrete including oppositely disposed, parallel form elements, each comprising two overlapping plates, each plate having an inwardly extending flange, the flange of any one plate overlapping the flange of an opposite plate on the same side, a vertically movable rod associated with each pair of'plates, links 'pivotally connecting said rod to the plates of the same pair, diagonally extending loraces pivoted to said rod and extending,

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Moulds, Cores, Or Mandrels (AREA)

Description

Feb. 26, 1 929.
1,703,499 E. B. SELWAY COLLAPSIBLE .BUILDING FORM Filed Feb. 2, 1928 2 Shets-Sheet 1 J" v I I l N ll 1 gwoentoo E E.B. SeZu/-ay Feb. 26, 1929. 1,703,499
E. B. SELWAY GOLLAPSIBLE BUILDING FORM Filed Feb. 2, 1928 2 Sheets-Sheet 2 Q wa Patented Feb. 26, 1929.
PATENT LOFFICE.)
EDWARD B, sELwAY, or LEETSDALE, PENNSYLVANIA. f
COLLAPSIBLE BUILDING Form.
Application filed February 2,1928. Serial No. 251,434.
This invention relates to forms designed to be used in connection with the building of concrete floors, walls and roofs,.and particularly to a collapsible core or form designed to be used in forming hollow concretewalls,
' the two collapsing rods which have a roofs or floors.
The general object of thG-HIVGDUOH is to provide a form which'may bereadily re,
moved after the concrete has been cast and 10 set.
proved form and of the previously eon- I structed subjacent wall, the studs being in section;
Figure 2 is a fragmentary elevation of the top ofthe form and studs; 7
Figure 3 is a vertical sectional view of the form; r I
Figure 1 is a transverse section on the line 44 of Figure 1; Figure 5 is a fragmentary section on the line 55 of Figure 3;
Figure 6 is a fragmentary horizontalsee' tion takenfat one end of the form showing the form expanded;
0 Referring to these drawings, it will be,
seen from Figure 1 that the form comprises four steel plates 10, each having. at one endv the flange 11 extending at right angles to the corresponding plate 10. Two of the plates are used for one side of the [form and two forthe other side and. the plates of each pair overlap, as shown inFigure 1, while the flanges of the plates overlap. Thus the plates may be shifted longitudinally upon 0 each other and laterally upon each other to thus not only shorten the form but contract it in width so that the form, after it has been used as a core, may be readily collapsed and removed from within the wall. The plates 10 are each provided upon its inner face with an outwardly projecting stud bolt 12 having A further object is to provide a concrete a nut 13, the heads of these stud bolts being inserted in countersunk washers '14, the
washers and the bolts being welded to or otherwise engaged with the plates.
Extending vertically of each form are length equal to or greater than the forms, and plvotally engaged with each collapsing rod are the links 16, these links 16 in turn.
being pivotally engaged with the bolts 12. Each rod 15 carries the outwardly projectmg bolt 17 upon which the inner ends of the links 16' are'pivoted, and eaehof these bolts carries the nut 18 and a washer 19 surrounding the head of the bolt,the washer and the bolt being welded to the correspondmg rod 15. Stops 20 act to limit the downward movement of the links 16 so that when the links are forced downward to their full extent they Wlll' be in an approximately horizontal position and the sections of the form will be expanded to the fullest extent Obviously, whenthe rods 15 are drawnupward, the sections will be longitudinally contracted. r
Preferably binding bar-S 21 are disposed between one pair of plates 10 and the oppositepair of plates,..these binding bars extendlng in a diagonal direction. As illustrated, these binding bars engage atone end with the bolts 12 and are held by the nuts 13, While at. the other end they. engage 'Withthe bolts 17 of the opposite rod 15. .Thuslt is obviousmthat. when the rods 15 are pulled upward,they will not only act to these bars 21 will act to pull the sections toward each other so as to decrease the width of the form.
F orv the purpose .of urging the form to ts full width and holding it fully expanded against the pressure of material, I mount. upon "the end flange 11 of one of the plates 10 of each pair of plates a plurality of links 22, each carrying a roller 23 at one contract the sections toward each other but.
end, which roller bears against the opposed plate, as shown in Figure 1. The free ends of thelinks 22 are pivotally connected to a rod 24:. A stop 25 is mounted upon the flange 11 of the opposed plate 10 which limits the downward movement of the rod 24 to a position where-the links 22 are in a'horizontal position. When the rods 24: are depressed, the links 22 acting through the rollers 23 will force the. sections of the form apart so as to increasethe width of v elements away from each other comprising links pivoted to one plate and having rollers engaging with the opposite plate, and means for shifting said links from or to a horizontal position.
5. A collapsible form for concrete including oppositely disposed, parallel form elements, means for spacing said elements from each other, means for longitudinally expanding or contracting said elen'ients or transversely expanding or contracting said elements, and guide bars mounted upon the elements on each face thereof toward the upper end, each guide bar having outwardly deflected portions adapted to ride over the studding.
6, A collapsible form for concrete including oppositely disposed, parallel form elements, each comprising two overlapping plates, each plate having an inwardly extending flange, the flange of any one plate overlapping the flange of an opposite plate on the same side, a vertically movable rod associated with each pair of'plates, links 'pivotally connecting said rod to the plates of the same pair, diagonally extending loraces pivoted to said rod and extending,
diagonally across to the diagonally opposite .plate and pivotally engaged therewith, and
EDWARD B. SELWAY.
US251434A 1928-02-02 1928-02-02 Collapsible building form Expired - Lifetime US1703499A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3574905A (en) * 1967-01-16 1971-04-13 Kao Jing Hong Device for successively building concrete structures

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3574905A (en) * 1967-01-16 1971-04-13 Kao Jing Hong Device for successively building concrete structures

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