US1888740A - Automatically extensible and collapsible tray - Google Patents

Automatically extensible and collapsible tray Download PDF

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Publication number
US1888740A
US1888740A US507204A US50720431A US1888740A US 1888740 A US1888740 A US 1888740A US 507204 A US507204 A US 507204A US 50720431 A US50720431 A US 50720431A US 1888740 A US1888740 A US 1888740A
Authority
US
United States
Prior art keywords
tray
tubes
legs
collapsible tray
shore
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
US507204A
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English (en)
Inventor
Schauman Karl Osten
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US1888740A publication Critical patent/US1888740A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B3/00—Folding or stowable tables
    • A47B3/08—Folding or stowable tables with legs pivoted to top or underframe
    • A47B3/091—Folding or stowable tables with legs pivoted to top or underframe with struts supporting the legs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B3/00—Folding or stowable tables
    • A47B3/02—Folding or stowable tables with foldable cross legs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B3/00—Folding or stowable tables
    • A47B3/08—Folding or stowable tables with legs pivoted to top or underframe
    • A47B3/0809—Folding or stowable tables with legs pivoted to top or underframe with elastic locking means
    • A47B3/0815—Folding or stowable tables with legs pivoted to top or underframe with elastic locking means the resilient force of the elastic locking means acting in a direction perpendicular to the axis of rotation of the leg
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47G—HOUSEHOLD OR TABLE EQUIPMENT
    • A47G23/00—Other table equipment
    • A47G23/06—Serving trays

Definitions

  • This invention relates to apparatus for forming, concrete floor molds, and particularly to temporary supportssor shores on which the moldsare supported.
  • I g It is frequently desirable to construot one portion of a floor of a thicker slab of concrete than another portion where the thickportion i is" required. to carry a heavier load than the other part.
  • the forms for the mold forthe thick slab are assembled in a lower plane than those for, the thin-slab, with a substantially vertical wall between thein the idifierencexin thickness between the two slabs being varied according tothe dif Schloe in the; loads to be carried thereon.
  • the principal object of this invention is the provision of;a shore which isisiinple in construction, efficient in use, and adapted to support thefloor forms on oneside ata higher. level than those on the other side.
  • f i Another object ofthe, invention is the pro: vision'of a shore ofthis kind adaptedto su port the floor forms on onefside in a higher plane than thoseon-the other side, said shore being adjustable to vary the-verticahdistance' between saidplanes. f I
  • V the invention sag provision of a shoreadapted to support a plurality of floor forms at their; corners,fsaid,
  • FIG. 1 is afmgmentar plan view of afloor mold illustrating 'one embodiment "of the invention
  • Fig.2 is a fragmentary, vertical seotionlof thesame, taken substantially on line2 2 of arrows at said line.”
  • shore being adjustable to support one of said 1 p r p ,1 are substantiallyrectangular 'pr squareT-in f form, and-arebutaway aethei corners to fit r 1930; (Serial no 435,450; a Fig 1 and looking i arrows at saldline s Fig. 3 isase'otion on line line and. showing one of the floor forins "de taehed; I
  • Fig. 4 is-a si F ig. 5 isan elevation of the other side of the shore shown in'Fig fi-; i
  • Fig. 6'' is a i perspective viewjof an "ad able earriershown in Fi gQ ljl I (F g.7 is aperspective viewo-f another sh'o e shown in Y I Fig.8 is apl'an view of the-same; "Fig, 9 isa perspective view; of -a;carrier shown in Fig. '8- 7 i looking in the direction ofthearrowat'sai' i Fig. 10 isa frontelevation of I modified form of tlie'shore shown in Fig'f l-i 1 I Figffl'l is asideeleva'tion ofthefs'aniejgf,
  • Fig. 12 is a plan View of theS ll m howing v a'fragnientof a-filoor forrnsupportedthereon and another detaehed therefrom, and
  • FIG. 13 is a sectiontaken ion line, 12;-:12of
  • Fig. 1 is a perspective view of the tray
  • Fig. 2 is a perspective view of the tray extended
  • Fig. 4 is a section on line 4 4.of Fig. 3
  • Fig. 5 is a section similar to 4 with the legs beginning to descend
  • Fig. 6 is a section of tray and table-fully opened.
  • the tray-top a is bordered by downwardly depending rimsaflthus providing a h0l-' low space on the underside of the tray.
  • metal or like brackets b Arranged at each. corner of the tray and with- 33 in the rim a are metal or like brackets b which are spaced away from the rim a as shown in Fig. 3 and are provided with keyhole slots 6 (see Fig. 4.)
  • pivot 35 spindles a the ends of which are located in the slots b suitable rollers or the like 0 being provided.
  • the spindles a carry at or near their centers hand-loops 0 and the rim A a of the tray is cut away at its ends as at a in order that the hands may be readily placed under the trayto grip the handloops 0
  • the spindles 0 can be caused to recede from one another along the slots 5 against the action of tension springs 72. which are arranged one along each long side of the tray and which are secured at their ends to the ends of the spindles 0 (see Fig. 4).
  • the centerpoints Kg of the tension springs h are secured as at is to the sides of the tray.
  • The' tubes cl are telescopically arranged within further tubes 5 which are pivotedas atc at their upper ends to the down-turned ends of brackets f mounted along the sides of an-iundershelf g.
  • Means are provided to prevent the complete withdrawal of the tubes d from the tubes e,.said means comprising end to a pin 6 near the lower end of the tube 6' and at its upper end is provided with a head Z2 arranged within the tube d, this head l in conjunction with the inturnedend d of the tubed serving the purposeabove re-
  • the parts of the device are arranged and operated in the following manner: as a tray, the undershelf g is accommodated in the hollow recess on the underside of the tray top a and in close proximityto the same (see Fig.
  • the height of the tray a' may be adjusted to suit essar'yto place the hands'under the rim and to pull the hand-loops 0
  • the tubes d can be telescoped-into the tubes 0' by pressure onthe tray a.
  • the tubes (Z havebeen fully telescoped into the tubes 0 so that the shelf g is arranged in close proximity with the un derside of the tray top, the-handles0 may be released when the springs it will act to swing the tubes 6 up under the tray top and to maintain the same in the raised position asshown in Fig.
  • a combined serving tray and table as setforth in claim 1 in whichrthe legs comprise upper and lower telescopic sections and in which the spreaderelement is 'pivotally connected to the upper ends of the lower leg sections.
  • a combined serving tray and table as set forth-in'claim 1 inwhich the pivotal connections between the legs and the rods are located atthefree-ends of angle members which extend first'laterallyfrom the, upper ends of the legs and then downwardly in spaced relation to the legs to permit the members to which the spreader elementis pivoted to be.

Landscapes

  • Tables And Desks Characterized By Structural Shape (AREA)
  • Handcart (AREA)
US507204A 1930-09-15 1931-01-07 Automatically extensible and collapsible tray Expired - Lifetime US1888740A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1888740X 1930-09-15

Publications (1)

Publication Number Publication Date
US1888740A true US1888740A (en) 1932-11-22

Family

ID=10892860

Family Applications (1)

Application Number Title Priority Date Filing Date
US507204A Expired - Lifetime US1888740A (en) 1930-09-15 1931-01-07 Automatically extensible and collapsible tray

Country Status (4)

Country Link
US (1) US1888740A (fr)
BE (1) BE377744A (fr)
DE (1) DE557034C (fr)
FR (1) FR712366A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2922529A (en) * 1957-08-01 1960-01-26 Harold M Culbertson Camp stove attached table
US3661100A (en) * 1968-09-05 1972-05-09 American Air Filter Co Folding table

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5490467A (en) * 1994-12-23 1996-02-13 Howe Furniture Corporation Folding table mechanism

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2922529A (en) * 1957-08-01 1960-01-26 Harold M Culbertson Camp stove attached table
US3661100A (en) * 1968-09-05 1972-05-09 American Air Filter Co Folding table

Also Published As

Publication number Publication date
BE377744A (fr)
FR712366A (fr) 1931-10-15
DE557034C (de) 1932-08-18

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