US2985447A - Locking and operating mechanism for a closure - Google Patents

Locking and operating mechanism for a closure Download PDF

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Publication number
US2985447A
US2985447A US71392658A US2985447A US 2985447 A US2985447 A US 2985447A US 71392658 A US71392658 A US 71392658A US 2985447 A US2985447 A US 2985447A
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United States
Prior art keywords
chain
locking
spring
pulling member
operating mechanism
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
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Inventor
Braskamp Willem Hendrik
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.)
Industriele Onderneming WH Braskamp NV
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Industriele Onderneming WH Braskamp NV
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Filing date
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Publication of US2985447A publication Critical patent/US2985447A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/12—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit being adapted for mounting in apertures
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F11/00—Man-operated mechanisms for operating wings, including those which also operate the fastening
    • E05F11/02—Man-operated mechanisms for operating wings, including those which also operate the fastening for wings in general, e.g. fanlights
    • E05F11/04—Man-operated mechanisms for operating wings, including those which also operate the fastening for wings in general, e.g. fanlights with cords, chains or cables
    • E05F11/06—Man-operated mechanisms for operating wings, including those which also operate the fastening for wings in general, e.g. fanlights with cords, chains or cables in guide-channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/64—Mounting; Assembling; Disassembling of axial pumps
    • F04D29/644—Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps
    • F04D29/646—Mounting or removal of fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/1426—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F7/007—Ventilation with forced flow
    • F24F7/013—Ventilation with forced flow using wall or window fans, displacing air through the wall or window
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Type of wing
    • E05Y2900/146—Shutters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/1426—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means
    • F24F2013/1453—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means with cables, e.g. bowden cables
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/1426—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means
    • F24F2013/146—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means with springs
    • 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
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/39—Cord and rope holders
    • Y10T24/3902—Chain
    • 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
    • Y10T292/28—Extension link
    • Y10T292/283—Chain

Definitions

  • the invention relates to a locking and operating mechanism for a flap, shutter, window, venetian blind or similar device operated by means of a flexible pulling member, the movement in one direction of said device being obtained by means of a spring or by its own weight while the movement in the opposite direction takes place by means of the pulling member.
  • Such mechanisms are used for flap windows, venetian blinds, ventilating flaps, shutters for window-ventilators and the like and in their most simple and most occurring form are formed by a cord, a cable or a chain, which has to be wrapped around a hook or has to be secured to a hook or nail by means of rings to fasten the device to be operated in a certain position.
  • the reliability of such a mechanism of course depends on the handiness of the operating person or of the condition of the hook or the like.
  • Purpose of the invention is the provision of a simple mechanism which always operates reliable and is easy to handle.
  • this purpose is obtained due to the fact that the pulling member extends through a pipe mounted adjacent to the device to be operated and adapted to rotate about its own axis, that pipe being bent downwards on the operating side and having a transverse groove in which engages a spring pressed strip, the width of which being greater than the length of the groove whereas that portion of the pulling member extending through the pipe has been provided with thickenings adapted to pass through the pipe but not underneath the strip extending into the groove.
  • the pulling member preferably is formed by a chain of spherical or similar elements.
  • the locking is obtained by means of the strip extending into the groove of the pipe said strip arresting the thickenings of the pulling member, which locking, however, may be raised easily by laterally pulling the pulling member such that the pipe is rotated as result of which the strip is lifted by the edge of the groove.
  • This strip extending into the groove may be formed by a leaf spring which is the most cheap and simple solution, whereas further the end of the strip or leaf spring cooperating with the pulling member may be bevelled somewhat for instance bent obliquely such that the thickenings of the pulling member may be drawn underneath it in one direction whereas a movement in opposite direction is prevented.
  • This has the advantage that on pulling the pulling member the pipe needs not to be rotated to raise the locking since the strip or leaf spring may ride over the thickenings.
  • shutter may be brought in a more or less closed position 70 by pulling the pulling member, in which position the shutter always will be arrested whereas lateral pullingv of the pulling member to raise the locking is sufficient to again open the shutter by letting run out the pulling member in said lateral position.
  • Figure 1 shows in cross-section a window ventilator with the locking device according to the invention.
  • Figure 2 is a view on the back side of the lower portion of the ventilator according to Figure l.
  • the window ventilator shown in the drawing consists of a motor 1 having a fan 2 said motor being secured in a housing 4 by means of a bracket 3, that housing 4 being secured in the glass pane 6.
  • This housing 4 is provided with a cover 7 pivotally secured to the housing at 8, a spring 9 being provided which urges the cover 7 in the open position.
  • pulling member 11 has been connected extending through a pipe 12 mounted for rotation about its own axis in the housing 4.
  • the pipe has been provided with a groove 13 extending unto the half of the thickness of the pipe, a leaf spring 14 engaging that groove and having a width such that the spring engages the edges of the pipe at the end of the groove.
  • the pulling member 11 is formed by a chain of spherical elements and the end of the spring 14 always extends between two balls of the chain. Due to this the chain is locked and consequently the cover 7. If in the open position of the cover 7 the chain 11 is pulled down that chain moves underneath the end of the spring thereby continuously raising the spring 14 until one stops pulling after which the chain is again locked by spring 14. If it is desired to open the cover 7 by means of the spring 9, the pulling member 11 is pulled laterally as indicated in Figure 2 as a result of which the end of the spring 14 is raised by the edge of the groove 13 and moved out of engagement with the balls of the chain due to which the pulling member may move in opposite direction.
  • a flap operating mechanism comprising a chain coupled to said flap, said chain including a plurality of connected links, a tubular guide slidably accommodating said chain whereby the chain is eifective to position said flap, said guide being provided with an aperture exposing said chain, spring means extendible through said aperture for engaging the chain and rendering the latter immobile, said spring means having a substantially fixed position relative to said guide, and support means rotatably supporting said guide to align and displace said aperture selectively relative to said spring means to render the latter respectively elfective and inetfective to engage said chain, said guide including a radial extension through which said chain extends, said chain bearing laterally against said extension to rotate said guide.
  • said spring means is a leaf spring having a free end adapted for engaging said chain.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Blinds (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Description

May 23, 1961 w. H. BRAsKAM 2,985,447
LOCKING AND OPERATING MECHANISM FOR A CLOSURE Y Filed Feb. 7, 1958 2 SHeets-Sheet 1 y 23, 1961 w. H. BRASKAMP 2,985,447
LOCKING AND OPERATING MECHANISM FOR A CLOSURE Filed Feb. 7, 1958 2 Sheets-Sheet 2 United States Patent LOCKING AND OPERATING MECHANISM FOR A CLOSURE Willem Hendrik 'Braskamp, Voorburg, Netherlands, assignor to N. Indnstriele Onderneming W. H. Braskamp, Rejswijk, Netherlands, a corporation of the Netherlands Filed Feb. 7, 1958, Ser. No. 713,926
Claims priority, application Netherlands Sept. 28, 1957 3 Claims. (Cl. 268-74) The invention relates to a locking and operating mechanism for a flap, shutter, window, venetian blind or similar device operated by means of a flexible pulling member, the movement in one direction of said device being obtained by means of a spring or by its own weight while the movement in the opposite direction takes place by means of the pulling member. Such mechanisms are used for flap windows, venetian blinds, ventilating flaps, shutters for window-ventilators and the like and in their most simple and most occurring form are formed by a cord, a cable or a chain, which has to be wrapped around a hook or has to be secured to a hook or nail by means of rings to fasten the device to be operated in a certain position. The reliability of such a mechanism of course depends on the handiness of the operating person or of the condition of the hook or the like.
Purpose of the invention is the provision of a simple mechanism which always operates reliable and is easy to handle.
According to the invention this purpose is obtained due to the fact that the pulling member extends through a pipe mounted adjacent to the device to be operated and adapted to rotate about its own axis, that pipe being bent downwards on the operating side and having a transverse groove in which engages a spring pressed strip, the width of which being greater than the length of the groove whereas that portion of the pulling member extending through the pipe has been provided with thickenings adapted to pass through the pipe but not underneath the strip extending into the groove. The pulling member preferably is formed by a chain of spherical or similar elements.
Due to that construction of the locking and operating mechanism hooks or the like for securing the pulling member has become superfluous. The locking is obtained by means of the strip extending into the groove of the pipe said strip arresting the thickenings of the pulling member, which locking, however, may be raised easily by laterally pulling the pulling member such that the pipe is rotated as result of which the strip is lifted by the edge of the groove.
This strip extending into the groove may be formed by a leaf spring which is the most cheap and simple solution, whereas further the end of the strip or leaf spring cooperating with the pulling member may be bevelled somewhat for instance bent obliquely such that the thickenings of the pulling member may be drawn underneath it in one direction whereas a movement in opposite direction is prevented. This has the advantage that on pulling the pulling member the pipe needs not to be rotated to raise the locking since the strip or leaf spring may ride over the thickenings.
If the mechanism is used with a shutter which is maintained in the open position by means of a spring, the
shutter may be brought in a more or less closed position 70 by pulling the pulling member, in which position the shutter always will be arrested whereas lateral pullingv of the pulling member to raise the locking is sufficient to again open the shutter by letting run out the pulling member in said lateral position.
The invention will be further elucidated with reference to the drawing in which the invention has been applied to a window-ventilator.
Figure 1 shows in cross-section a window ventilator with the locking device according to the invention.
Figure 2 is a view on the back side of the lower portion of the ventilator according to Figure l.
The window ventilator shown in the drawing consists of a motor 1 having a fan 2 said motor being secured in a housing 4 by means of a bracket 3, that housing 4 being secured in the glass pane 6. This housing 4 is provided with a cover 7 pivotally secured to the housing at 8, a spring 9 being provided which urges the cover 7 in the open position. At the lower end of the cover at 10 a. pulling member 11 has been connected extending through a pipe 12 mounted for rotation about its own axis in the housing 4. Almost in the middle the pipe has been provided with a groove 13 extending unto the half of the thickness of the pipe, a leaf spring 14 engaging that groove and having a width such that the spring engages the edges of the pipe at the end of the groove. The pulling member 11 is formed by a chain of spherical elements and the end of the spring 14 always extends between two balls of the chain. Due to this the chain is locked and consequently the cover 7. If in the open position of the cover 7 the chain 11 is pulled down that chain moves underneath the end of the spring thereby continuously raising the spring 14 until one stops pulling after which the chain is again locked by spring 14. If it is desired to open the cover 7 by means of the spring 9, the pulling member 11 is pulled laterally as indicated in Figure 2 as a result of which the end of the spring 14 is raised by the edge of the groove 13 and moved out of engagement with the balls of the chain due to which the pulling member may move in opposite direction.
What I claim is:
l. A flap operating mechanism comprising a chain coupled to said flap, said chain including a plurality of connected links, a tubular guide slidably accommodating said chain whereby the chain is eifective to position said flap, said guide being provided with an aperture exposing said chain, spring means extendible through said aperture for engaging the chain and rendering the latter immobile, said spring means having a substantially fixed position relative to said guide, and support means rotatably supporting said guide to align and displace said aperture selectively relative to said spring means to render the latter respectively elfective and inetfective to engage said chain, said guide including a radial extension through which said chain extends, said chain bearing laterally against said extension to rotate said guide.
2. A mechanism as claimed in claim 1, wherein said spring means is a leaf spring having a free end adapted for engaging said chain.
3. A mechanism as claimed in claim 2, wherein the end of the spring adapted for engagement with said chain is beveled.
References Cited in the file of this patent UNITED STATES PATENTS Sweden Jan. 27, 1953
US71392658 1957-09-28 1958-02-07 Locking and operating mechanism for a closure Expired - Lifetime US2985447A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL221185 1957-09-28

Publications (1)

Publication Number Publication Date
US2985447A true US2985447A (en) 1961-05-23

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ID=19750994

Family Applications (1)

Application Number Title Priority Date Filing Date
US71392658 Expired - Lifetime US2985447A (en) 1957-09-28 1958-02-07 Locking and operating mechanism for a closure

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US (1) US2985447A (en)
CH (1) CH366352A (en)
DE (1) DE1077563B (en)
FR (1) FR1201522A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3182370A (en) * 1962-08-24 1965-05-11 Braskamp W H Nv Locking device for a pull chain
US4815530A (en) * 1987-03-10 1989-03-28 Kool Kap Corp. Kool kap
US9091455B1 (en) * 2011-10-12 2015-07-28 Jan B. Coster Swamp cooler blower fan hole cover
US20220163231A1 (en) * 2018-10-31 2022-05-26 Robert Scott KELLY Fabric cover with air permeable panels

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1952707A (en) * 1932-05-27 1934-03-27 Uni Flo Grille Corp Wall register and grille support
US2454794A (en) * 1945-07-31 1948-11-30 Hakanson Alfred Sash holder

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US977291A (en) * 1910-04-02 1910-11-29 Alexander Fromhold Transom-lifter, &c.
US2560840A (en) * 1950-01-26 1951-07-17 Sr Donald R Barnes Means for mounting and operating the slats in venetian blinds

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1952707A (en) * 1932-05-27 1934-03-27 Uni Flo Grille Corp Wall register and grille support
US2454794A (en) * 1945-07-31 1948-11-30 Hakanson Alfred Sash holder

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3182370A (en) * 1962-08-24 1965-05-11 Braskamp W H Nv Locking device for a pull chain
US4815530A (en) * 1987-03-10 1989-03-28 Kool Kap Corp. Kool kap
US9091455B1 (en) * 2011-10-12 2015-07-28 Jan B. Coster Swamp cooler blower fan hole cover
US20220163231A1 (en) * 2018-10-31 2022-05-26 Robert Scott KELLY Fabric cover with air permeable panels
US11703251B2 (en) * 2018-10-31 2023-07-18 Robert Scott KELLY Fabric cover with air permeable panels

Also Published As

Publication number Publication date
DE1077563B (en) 1960-03-10
CH366352A (en) 1962-12-31
FR1201522A (en) 1959-12-30

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