US3568803A - Extending device for setting in motion a lift-booth in case of an electric breakdown - Google Patents

Extending device for setting in motion a lift-booth in case of an electric breakdown Download PDF

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Publication number
US3568803A
US3568803A US780608A US3568803DA US3568803A US 3568803 A US3568803 A US 3568803A US 780608 A US780608 A US 780608A US 3568803D A US3568803D A US 3568803DA US 3568803 A US3568803 A US 3568803A
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United States
Prior art keywords
jack
booth
lever
safety
extending
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Expired - Lifetime
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US780608A
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English (en)
Inventor
Jacques Leon Alexandre See
Alain Albert Louis Houille
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/027—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions to permit passengers to leave an elevator car in case of failure, e.g. moving the car to a reference floor or unlocking the door

Definitions

  • the device for Semn g m motion a lift-booth 1n giggw CASE OF AN ELECTRIC case of an electrical breakdown comprises extending connect- 10 Cl 5 D ing means interposed between the booth and the suspension aims rawmg cable thereof, the weight of said booth being used as a source [52] US. Cl 187/1, of energy for working said means so as to cause their extension 187/18, 187/69, 187/71 in an adjustable measure.
  • the present invention relates to a device allowing to ⁇ set in motion a lift-booth in case of a breakdown in the electric feeding of a lift. Actually, it occurs frequently, that in case of such an unexpected breakdown the lift is remaining between two stories.
  • the device of the invention is essentially characterized in that the booth is dissociated from the suspension cable or in other words that extending link means are interposed between said booth and said cable so to allow in a given extend, corresponding for example to the height separating two or even three successive stories, to make moving downwards said booth in such an extend and that is made by using the weight of the booth as a motor agent.
  • the device of the invention may be placed either on new booths which have'not yet been mounted or on booths already in place. It may actually be easily adapted on any booth and that for a moderate cost. Moreover, the device of the invention is of a great security of working and a total safety.
  • Another advantage of the device according to the invention lies in the fact it does not need any other source of energy so that it is entirely independent. Moreover, when it has been used, it may be bring back in its first waiting position without be necessary to have any material or any tools. Moreover, resetting the device of the invention is ensured by means proper to the lift equipment when the current is reestablished.
  • a device for setting in motion a lift-booth in case of an electrical breakdown where it is interposed between said booth and the suspension cable thereof, extending connecting means, and where the weight of said booth is used as a source of energy for working said means so as to cause their extension in an adjustable measure.
  • FIG. 1 is a diagrammatic plan view of the extending device for supporting a lift according to the invention.
  • FlG. 2 is a plan view similar to FIG. 1 illustrating a characteristic position of the device of FIG. 1.
  • H6. 3 is a cross section, roughly viewed according to line Ill-ill of FIG. 1.
  • FIG. 4 is a cross section similar to FIG. 3 showing a variant.
  • P16. 5 is a partial diagrammatic plan view showing a further expansion of the invention.
  • reference numeral 1 designates a lift-booth diagrammatically represented.
  • This booth is connected at its upper part to one pin or pins 2 for articulation of the foot of small connecting rods 3, 4 whose heads are articulated by pins 5, 6 to connecting rods 7, 8, which are articulated each other at their median part on a pin 9, said connecting rods 7, 8 being, moreover, articulated, in case of need, to other similar connecting rods in order to constitute an accordion pleated mounting comprising, at its end part, connecting rods 10, 11 connected to their ends by a pin 12 to which is fixed the cable 13 supporting the booth 1.
  • At least the pins 5, 6 connecting the small connecting rods 3, 3 to the connecting rods 7, 8 are connected each other by a hydraulic jack 14, the pin 5 supporting for example, the body of the jack 14 while the pin 6 supports the rod 15 of said jack.
  • FIGS. 3 and 4 show that the above-described levers may be realized in various ways. Actually, according to FIG. 3, it is shown that two sets A, B of identical levers are provided and that the jack 14 is placed between said two sets of levers A, B.
  • a safety device is then constituted, as shown in FIG. 5, by a locking lever 16 articulated on the pin 2 and provided, in its upper part, with a cut 17 for fitting the upper pin 12 connecting the small connecting rods 10, ll.
  • the height of the cut 17 is bigger than the diameter of the pin 12 so that said pin does not normally bear on the lining 17a of said out.
  • the jack 14 be maintained under pressure, thus allowing to be aware of its good state of working when the device is not used.
  • the pivotally mounted locking lever 16 is maintained in its position called safety position represented in full line, by a jack 18 articulated by the body in 19, for example, on the top of the booth I, and in 20 by the rod 21 on a lever 16.
  • the rod 21 presents a rather big diameter and is connected to a piston 22 which may slide in the jack 18 in which it limits two chambers 23 and 24
  • the chamber 23 is constantly connected to the inside of the jack 14 by a duct 25 and this chamber is also connected, by a duct 26 to one of the inputs of a distributor 27 whose slide-valve 28 presents at least two ducts 29 and 30.
  • Chamber 24 of jack 18 is connected by a duct 31 to a second input of the distributor 27, the output of which communicates by a duct 32 with a tank 33 filled with a liquid preferably maintained under pressure by means of a pneumatic chamber 34.
  • a duct 35 is also provided connected to duct 31 and communicating with the inside of jack 18 by an aperture which is normally closed by the piston 22 when the lever 16 is in the locking position.
  • the distribution 27 is acted in order to bring the duct 30 of its slide valve in coincidence with duct 31 and with duct 32 leading to the tank 33 for the liquid.
  • the pressure falls in chamber 24 and consequently, becomes lower than the pressure in chamber 23 as said chamber is connected to the inside of the jack 14 under pressure.
  • the piston 22 slides according to the arrow f and disengage the lever 16 to bring it in a position 16a for which the pin 12 is free.
  • this movement of the jack 18 does necessitates only a very small amount of liquid because of the very small volume of the chamber 23.
  • the jack 14 does not still allow to the accordion pleated device to extend appreciably, the disengagement of lever 16 intervening in any case before the pin 12 will come in contact with the lining 17a of cut 17.
  • the above-described displacement of piston 22 of the jack 18 has for effect to uncover the aperture making chamber 23 communicating with duct 35 connected to duct 31 and, consequently, by the distributor 27 to the tank 33.
  • the liquid may flow from jack 24 to chamber 23 and from said chamber by the duct 35 and duct 31 up to the tank.
  • the extending accordion pleated device may therefore extend and meanwhile the liquid is stored in the tank 33 under a pressure progressively increasing.
  • the invention is not limited to. the embodiments, represented and described in detail as various modifications may be applied to it without going outside the scope of the invention.
  • jack 14 orjacks 14 and 14 may operate the extending device on other place than hereinbefore described and, samely, devices drawing attention on the good state of working may be annexed to the device.
  • the tank 33 for the liquid may be made by a jack disposed beneath the booth in order than said jack be extended downwards when the extending device is used. In that case the mobile part of said jack comes in contact with the bottom of the shaft of the lift when current is reestablished and that it is proceeded with resetting the device at its first state.
  • the weight of the booth being then exerted on the jack causes decanting of the liquid to the jack 18 then to the jack 14 as hereinbefore described.
  • a device for controllably lowering a cable-suspended liftbooth to a desired level in case of a breakdown of the means normally employed for raising and lowering said booth comprising: a set of articulated levers forming a longitudinally extensible lazy tongs structure having articulation pins interconnecting said links at laterally opposed locations, said lazy tongs structure being interposed and extending longitudinally between said booth and the cable from which said booth is normally suspended, a normally extended fluid pressure jack connecting said laterally opposed locations, whereby normally to maintain said lazy tongs structure in a longitudinally contracted position, a distributor for said jack located in said booth whereby the person in said booth may controllably release fluid from said jack to extend said lazy tongs and lower said booth to a desired level.
  • a device wherein said jack is fixed by its body to one of the articulation pins of the levers, and by its rod to one of the other articulation pins.
  • a device according to claim 1 wherein two acks are provided to be placed on both sides of the set of articulated levers.
  • a device wherein two sets of articulated levers are parallely provided and the jack is placed between the two sets.
  • said safety device works hydraulically and comprises a pivotally mounted lever presenting a protrusion in order to cover a pin to which the suspension cable is fixed, said lever being controlled by a jack mounted in series with the jack limiting the speed of displacement of the accordion pleated articulated levers.
  • the jack controlling the lever is double-acting and comprises a piston, the sides of which present different active areas, the two chambers of said jack being hydraulically connected when the extending device is not in use, so that the pressure prevailing in the jack associated to the extending device is applied permanently in the two chambers of the jack controlling the lever in order to maintain an effective safety.
  • draining of the jack associated with the extending device is produced by means of the safety jack whose piston discloses an aperture when the safety lever is displaced of a sufficient extend.
  • draining of the jack associated with the extending device as well as draining of the safety jack are made in a tank forming hydraulic accumulator and comprising a charge of gas under pressure.
  • a device wherein the tank is made under the shape of a jack disposed beneath the lift-booth.

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  • Types And Forms Of Lifts (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
US780608A 1967-12-01 1968-12-02 Extending device for setting in motion a lift-booth in case of an electric breakdown Expired - Lifetime US3568803A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR130593 1967-12-01

Publications (1)

Publication Number Publication Date
US3568803A true US3568803A (en) 1971-03-09

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ID=8642612

Family Applications (1)

Application Number Title Priority Date Filing Date
US780608A Expired - Lifetime US3568803A (en) 1967-12-01 1968-12-02 Extending device for setting in motion a lift-booth in case of an electric breakdown

Country Status (5)

Country Link
US (1) US3568803A (ja)
CH (1) CH484822A (ja)
DE (1) DE1812210A1 (ja)
FR (1) FR1558398A (ja)
GB (1) GB1248417A (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0396490A1 (en) * 1989-04-19 1990-11-07 Apostolos Dogoritis Mechanism of removing an elevator cabin in case of a cutting off of the supply of the electricity
US20050217955A1 (en) * 2004-04-01 2005-10-06 Minor Ray C Pole vibration damping assembly and method
US20130105512A1 (en) * 2010-07-16 2013-05-02 Mcgill Technology Limited Dispensing apparatus

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2234904C3 (de) * 1972-07-15 1982-01-14 Grigoleit, Günter, 3501 Ahnatal Sicherheitsvorrichtung für Personen- und Lastenaufzüge
DE2738051A1 (de) * 1977-08-24 1979-03-01 Guenter Grigoleit Sicherheitsvorrichtung fuer personen- und lastenaufzuege
DE3306672C1 (de) * 1983-02-25 1984-03-29 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 4200 Oberhausen Hubeinrichtung zur Entlastung der Förderseile bei der Bergbauschachtförderung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US827109A (en) * 1905-03-10 1906-07-31 Albert J Myer Elevator.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US827109A (en) * 1905-03-10 1906-07-31 Albert J Myer Elevator.

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0396490A1 (en) * 1989-04-19 1990-11-07 Apostolos Dogoritis Mechanism of removing an elevator cabin in case of a cutting off of the supply of the electricity
US20050217955A1 (en) * 2004-04-01 2005-10-06 Minor Ray C Pole vibration damping assembly and method
US7232017B2 (en) 2004-04-01 2007-06-19 Kearney-National Inc. Pole vibration damping assembly and method
US20130105512A1 (en) * 2010-07-16 2013-05-02 Mcgill Technology Limited Dispensing apparatus
US9439446B2 (en) 2010-07-16 2016-09-13 Mcgill Technology Limited Dispensing apparatus
US9737084B2 (en) 2010-07-16 2017-08-22 Mcgill Technology Limited Dispensing apparatus

Also Published As

Publication number Publication date
DE1812210A1 (de) 1969-06-19
CH484822A (fr) 1970-01-31
FR1558398A (ja) 1969-02-28
GB1248417A (en) 1971-10-06

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