US1214018A - Latch mechanism for collapsible shelves and doors. - Google Patents

Latch mechanism for collapsible shelves and doors. Download PDF

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Publication number
US1214018A
US1214018A US1914852628A US1214018A US 1214018 A US1214018 A US 1214018A US 1914852628 A US1914852628 A US 1914852628A US 1214018 A US1214018 A US 1214018A
Authority
US
United States
Prior art keywords
pawl
sliding piece
movement
board
operative
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
Other languages
English (en)
Inventor
Camille De Vleeschouwer
Johannes Tacoma
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
Priority to US1914852628 priority Critical patent/US1214018A/en
Priority to DE1915289882D priority patent/DE289882C/de
Priority to FR479305A priority patent/FR479305A/fr
Priority to GB191510659D priority patent/GB191510659A/en
Priority to US83028A priority patent/US1223677A/en
Priority to CH75165A priority patent/CH75165A/de
Application granted granted Critical
Publication of US1214018A publication Critical patent/US1214018A/en
Priority to NL17284A priority patent/NL8023C/nl
Priority to GB249/21A priority patent/GB172234A/en
Priority to FR25890D priority patent/FR25890E/fr
Priority to DEV17088D priority patent/DE357913C/de
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
    • A47B21/00—Tables or desks for office equipment, e.g. typewriters, keyboards
    • A47B21/02—Tables or desks for office equipment, e.g. typewriters, keyboards with vertical adjustable parts
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B65/00—Locks or fastenings for special use
    • E05B65/0042—For refrigerators or cold rooms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A29/00—Cleaning or lubricating arrangements
    • F41A29/02—Scrapers or cleaning rods
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S292/00—Closure fasteners
    • Y10S292/04—Automatic release latches
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/54—Trippers

Definitions

  • rlhe present invention relates to latch mechanisms and particularly to mechanisms for automatically securing doors, collapsible shelves, typewriter-supporting boards for desks, and the like, when brought into a jnedetermined position.
  • the primary object of the invention is to provide'a latch mechanism which will automatically secure and sustain the supporting board ⁇ orV the like when it has been moved to a point jnst past its operative position and has then been returned to operative position, but which will release the supporting board when it has subsequently been moved away from its operative position in the same direction as in the first instance but to a greater extent, so that upon movement thereafter toward its inoperative position the board will be tree from obstruction by the latch mechanism.
  • Figure l is a perspective view of a portion of a typewriter cabinet or desk and a portion of the supporting board for a dis appearing typewriting machine, the board being shown partly in section and the improved latch mechanism being shown mounted upon the cabinet and operatively engaged with the supporting board, the board being at the limit of its initial movement past its operative position; and, Fig. 2 is a similar View, showing the relative positions of the different parts of the latch mechanism when 'the supporting board has been lowered into its operative position after the initial movement thereof, the limiting member being in its inoperative position, the locking pawl being iii-operative engagement with the supporting board, and the sliding piece carried by the locking pawl being locked in its retracted position.
  • rl ⁇ he lock mechanism is composed of the main parts A, B, C, D, E, F, and G. lOne of these devices is placed on the post 26 on each side of the case.
  • rthe sector A is pivotally mounted at al, its rotation being limited by the pin a3 and the slot a2.
  • a notch or groove a is provided into which the pin b1 of one arm ot' the bell crank lever Bj, which is pivotally mounted at b2, catches.
  • the second arm 3 of this lever B is conn'ected by means of a connecting rod C, to a sliding piece D, said rod C being connected to a side projection da of this sliding piece D.
  • the sliding piece D is guided by two pins el, e2 which engage the slots d1, Z2 respectively, so that the sliding piece D can move in a straight line relatively to the arm or locking pawl E, on which the pins e1 e2 are fastened.
  • T he sliding piece D moreover possesses at its lower end a hook or pawl d5.
  • the head (Z4 and the hook or pawl d5 of the sliding piece D are arranged in a straight line with the guiding slots d1, d2.
  • a lspiral spring d is attached to the side projection d3, which spring is fastened at its upper end to the locking pawl E at e3.
  • This locking paw] E pivots about the journal e* and is continuously drawn by a spiral spring e5 against the two pins (Il, g2, of the disk (l.
  • the upper portion otl the locking pawl E is provided with two straight bearing surfaces e", e7, which correspond to the pins g1, y2.
  • the turning of the locking pawl E is also limited by a slot c and a pin e8.
  • a spring-controlled pawil F is arranged, which, being subject to the pressure oi' the spring f2, tends to turn around the journal f1 in a counter clockwisedirec tion, being limited in this turning by a fixed stop ,'F.
  • the disk G which carries two pins (/1, ,f/t' is pivotally mounted on the fixed journal 1f/3 and said disk G is formed with a head g, which in the position of rest of the lock mechanism is situated above the head et' the sliding piece D.
  • the disk Gr is turned'back' vagain. toward the left by the action of the spring e5, transmitted by the bearing surfacet7 to the pin g2, so that the head g"l is below' the catch or stop 24.
  • the head g4 is turned downward bythe catch or stop ⁇ 24, the pin g1 through contact with the-bearing surface e swinging the arm vE out to such an extent that the hook Z5 is lifted out of the pawl F.
  • a supporting member mounted for movement between its inoperative and operative positions, and a latch for securing the said member in its operative position
  • a movable locking pawha sliding piece mounted upon the pawl for limited movement relative thereto
  • a movable limiting member adapted to normally project into the path or the supporting member at a position more re'- mote from the inoperative position of the supporting member than its operative position
  • a movable releasing device for the locking pawi disposed
  • a movable limiting member adapted normally to project into.,l the path of the supporting member at a position more remote from the inoperative position of the supporting member than its operative position, means for transmitting motion from the sliding piece of the pawl to the said limiting member "to render the latter inoperative upon movement of the said piece into retracted position, a movable releasing device fort-he locking pawl disposed normally so that it projects into the path of a part of the supporting member but is shielded from contact therewith by the limiting member when member, the said member when 1n operative position in engagement with the pawl being adapted to bear against the sliding piece to maintain the same in retracted position, a movable limiting member adapted normally to project into the path of thev supporting member at a position more remote from the inoperative position of
  • an article of furniture in combination, a supporting member mounted for movement between. its inoperative and operative positions, and a latch vfor securing the said member in its operative position comprising a movable locking pavvl, a sliding piece mounted upon the paWl for limited movement relative thereto, meansfor yieldably maintaining the sliding piece normally in operative position projecting from the pawl for contact with the supporting member, the said member when in operative position in engagement With the pawl being adapted to bear against the sliding piece to maintain the same in retracted position, a movable limiting member adapted normally to project into the path of the supporting member at a position more remote from the inoperative position of the supporting member than its operative position, means for transmitting -motion from the sliding piece of the pawl to the said limiting member to render the latter inoperative upon movement of the said piece into retracted position, a movable releasing device for the locking pawl disposed normally so that it projects into the path of a part of the supporting member but is shielde
  • the said piece being adapted to be moved out of engagement with the second pawl to be released upon movement of the first pawl into inoperative position.

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Casings For Electric Apparatus (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Closing And Opening Devices For Wings, And Checks For Wings (AREA)
  • Holders For Apparel And Elements Relating To Apparel (AREA)
US1914852628 1914-07-23 1914-07-23 Latch mechanism for collapsible shelves and doors. Expired - Lifetime US1214018A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
US1914852628 US1214018A (en) 1914-07-23 1914-07-23 Latch mechanism for collapsible shelves and doors.
DE1915289882D DE289882C (en(2012)) 1914-07-23 1915-07-10
FR479305A FR479305A (fr) 1914-07-23 1915-07-19 Pupitre avec machine à écrire pivotable placée sur le coté
GB191510659D GB191510659A (en) 1914-07-23 1915-07-22 Improvements in or connected with Desks or Cabinets for Disappearing Typewriting Machines.
US83028A US1223677A (en) 1914-07-23 1916-03-09 Desk or cabinet for disappearing type-writing machines.
CH75165A CH75165A (de) 1914-07-23 1916-11-11 Einrichtung zum Reinigen von Gewehr- und sonstigen Rohren unter Verwendung auf- und abrollbarer, biegsamer Zugorgane
NL17284A NL8023C (nl) 1914-07-23 1920-12-03 Lessenaar met ter zijde aangebrachte verplaatsbare schrijfmachines
GB249/21A GB172234A (en) 1914-07-23 1921-01-04 Improvements in or connected with desks or cabinets for disappearing typewriting machines
FR25890D FR25890E (fr) 1914-07-23 1921-12-28 Pupitre avec machine à écrire pivotable placée sur le côté
DEV17088D DE357913C (de) 1914-07-23 1921-12-29 Pult mit seitlich angeordneter, schwenkbar gelagerter Schreibmaschine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1914852628 US1214018A (en) 1914-07-23 1914-07-23 Latch mechanism for collapsible shelves and doors.

Publications (1)

Publication Number Publication Date
US1214018A true US1214018A (en) 1917-01-30

Family

ID=3281910

Family Applications (2)

Application Number Title Priority Date Filing Date
US1914852628 Expired - Lifetime US1214018A (en) 1914-07-23 1914-07-23 Latch mechanism for collapsible shelves and doors.
US83028A Expired - Lifetime US1223677A (en) 1914-07-23 1916-03-09 Desk or cabinet for disappearing type-writing machines.

Family Applications After (1)

Application Number Title Priority Date Filing Date
US83028A Expired - Lifetime US1223677A (en) 1914-07-23 1916-03-09 Desk or cabinet for disappearing type-writing machines.

Country Status (6)

Country Link
US (2) US1214018A (en(2012))
CH (1) CH75165A (en(2012))
DE (2) DE289882C (en(2012))
FR (2) FR479305A (en(2012))
GB (2) GB191510659A (en(2012))
NL (1) NL8023C (en(2012))

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2692749A (en) * 1952-06-30 1954-10-26 Utility Appliance Corp Latch mechanism for levers
US4570984A (en) * 1983-08-16 1986-02-18 Norman Russ Door hold
US20110131884A1 (en) * 2006-08-24 2011-06-09 Grass Gmbh & Co. Kg Opening device for furniture parts which are moveable relative to one another

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2543485A (en) * 1946-11-14 1951-02-27 Jamestown Mctal Equipment Comp Suspension for cabinet ironers
US2585566A (en) * 1947-10-27 1952-02-12 Lundstrom Carl Brynolf Typewriter cabinet

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2692749A (en) * 1952-06-30 1954-10-26 Utility Appliance Corp Latch mechanism for levers
US4570984A (en) * 1983-08-16 1986-02-18 Norman Russ Door hold
US20110131884A1 (en) * 2006-08-24 2011-06-09 Grass Gmbh & Co. Kg Opening device for furniture parts which are moveable relative to one another
US8282175B2 (en) * 2006-08-24 2012-10-09 Grass Gmbh & Co. Kg Opening device for furniture parts which are moveable relative to one another

Also Published As

Publication number Publication date
FR479305A (fr) 1916-03-15
DE357913C (de) 1922-09-02
CH75165A (de) 1917-06-16
DE289882C (en(2012)) 1916-01-25
GB172234A (en) 1921-12-08
NL8023C (nl) 1923-01-15
US1223677A (en) 1917-04-24
FR25890E (fr) 1923-06-22
GB191510659A (en) 1916-01-20

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