US3469164A - Hoist pushbutton control - Google Patents

Hoist pushbutton control Download PDF

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Publication number
US3469164A
US3469164A US525236A US3469164DA US3469164A US 3469164 A US3469164 A US 3469164A US 525236 A US525236 A US 525236A US 3469164D A US3469164D A US 3469164DA US 3469164 A US3469164 A US 3469164A
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US
United States
Prior art keywords
control
pushbutton
hoist
cam
button
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
US525236A
Other languages
English (en)
Inventor
John P Truemper
Aubrey H Smith
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.)
Yale Industrial Products Inc
Original Assignee
Eaton Yale and Towne Inc
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 Eaton Yale and Towne Inc filed Critical Eaton Yale and Towne Inc
Application granted granted Critical
Publication of US3469164A publication Critical patent/US3469164A/en
Assigned to YALE INDUSTRIAL PRODUCTS, INC., A CORP OF DE reassignment YALE INDUSTRIAL PRODUCTS, INC., A CORP OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: EATON CORPORATION, AN OH CORP.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/02—Bases, casings, or covers
    • H01H9/0214—Hand-held casings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/52—Details of compartments for driving engines or motors or of operator's stands or cabins
    • B66C13/54—Operator's stands or cabins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/18—Power-operated hoists
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C2700/00—Cranes
    • B66C2700/08—Electrical assemblies or electrical control devices for cranes, winches, capstans or electrical hoists
    • B66C2700/085—Control actuators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D2700/00—Capstans, winches or hoists
    • B66D2700/02—Hoists or accessories for hoists
    • B66D2700/026—Pulleys, sheaves, pulley blocks or their mounting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/72—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard wherein the switch has means for limiting the number of operating members that can concurrently be in the actuated position
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0066—Auxiliary contact devices

Definitions

  • a switch is moved by the interlock cam so as to actuate a directional control circuit when the cam is moved by either button.
  • Each pushbutton has a stem connected to a movable core of a ⁇ variable transformer that forms a part of a speed control circuit. The switch having actuated a directional circuit, further depressing movement of the button will vary the current in the speed circuit.
  • Our invention relates to a novel pushbutton operated control that is particularly adapted for controlling speed and direction circuits on a variable speed hoist.
  • each pushbutton will ⁇ rnove a switch to -a corresponding direction control position. Further depressing movement of the pushbutton will operate a variable current regulating device that is adapted to control a speed circuit on the hoist, but the' switch will not move beyond the control positonin which it was first placed by the button.
  • a variable current regulating device that will contribute infinite speed control while requiring no sliding'contacts.
  • That device may be a variice able transformer that is so connected to a pushbutton as to vary its current output as the button is depressed. The pushbutton first will actuate a switch that will control the direction in which the speed control is applied.
  • FIGURE l shows an electric hoist that is equipped with our novel pushbutton operated control.
  • FIGURE 2 shows a cross-section of our control, taken on the line 2-2i11 FIGURE 3.
  • FIGURE 3 is a longitudinal section showing parts of our invention.
  • FIGURE 4 shows diagrammatically how our control may be utilized.
  • FIGURE 1 of the drawing we show our novel ibushbutton control 10 connected through a exible cable 11 to an electric hoist 12 of a usual type.
  • the hoist 12 has a motor 13 that will operate a drum 14 so as to wind va rope 15 on which is a load hook 16', and there is a suspension hook 17 through which the hoist 12 is supported.
  • hoist housing enclose parts of the motor control circuits and the hoist mechanism, not shown. Further details of the hoist 12 are not important to an understanding of our invention, and it is merely necessary to know here that our novel pushbutton control 10 will act through wires in the fiexible cable 11 to operate motor control circuits on the hoist 12.
  • the novel control 10 of our invention includes a pair of pushbuttons 20, 21, well shown in FIGURE 3, having stems 22, 23 that are mounted to slide in openings in a casing 24.
  • a coil spring 25 presses each button 20, 21 in an outward direction, normally holding the button in a neutral position in which a lug 26 on each stem 22, 23 is against an inner surface of casing 24.
  • an interlock cam 27 is mounted for sliding movement in openings that are formed in transverse wall portions 28 on the casing 24, the cam 27 having tapered end portions 29 for coacting with surfaces on the pushbutton stems 22, 23.
  • the cam ends 29 are so formed that each pushbutton 20, 21 will act during a first part of its depressing movement to slide interlock cam 27 in one direction or the other, causing the cam to lock the other pushbutton in neutral position.
  • the pushbutton that slides the cam can be further depressed through a considerable distance, but when so depressed will cause no further movement of cam 27 because a side surface of the button stem will merely hold the cam in locking position.
  • Our control further includes a three-position switch 30, FIGURE 3, that will be operated by the interlock cam 27.
  • switch 30 is mounted between the wall portions 28 on casing 24, and has a spring contact finger 31 engaging a recess in the cam 27.
  • the Wsitch 30 has further contact fingers 32, 33.
  • the first contact finger 31 will be in open circuit relation to fingers 32, 33, and will act by its spring pressure to hold interlock cam 27 in neutral position.
  • cam 27 slides due to a depressing movement of either pushbutton 20, 21, that cam will move the contact finger 31 into circuit closing position relatively to a corresponding finger 33 or 32. It will thus be seen that interlock cam 27 upon moving to lock a pushbutton will be effective for closing a particular circuit.
  • the switch 30 will remain in that position and will have no further movement when there is a further depressing movement of the pushbutton that has moved cam 27.
  • each transformer 34, 35 has an axially extending core opening 38 that is in aligned relation to a corresponding pushbutton 20, 21. While not seen in FIGURE 3, each transformer 34, 35 includes a primary winding 39 and a secondary winding 40 as shown diagrammatically in FIGURE 4. On each pushbutton stem 22, 23 is a slug 41 that forms a movable core for the corresponding transformer 34, 35.
  • each core 41 is attached to its pushbutton stem through a screw member 42 on which the core can be rotated to change its longitudinal position relatively to the stem.
  • the casing 24 is formed with openings 43 through which a tool may be inserted into engagement with a slot 43a in either core 41.
  • each transformer 34, 35 will produce an output that is at a minimum while the corresponding pushbutton 20, 21 is in neutral position and until that button has been depressed sufficiently to cause switch 30 to actuate a circuit.
  • transformer cores 41 can be adjusted on the screw members 42, it will be possible to set as may be desired the amount of transformer output that will be effective at the time when switch 30I closes a circuit.
  • each transformer 34, 35 may be effective for applying infinite speed control to a motor speed circuit that is responsive to a varying current.
  • FIGURE 4 we have shown the circuits diagrammatically in FIGURE 4. Of course, there will be a suitable source of power 44 that will energize the transformer primary windings 39. The secondary winding 40 of each transformer 34, 35 will be connected to a speed control circuit 45 for the hoist motor 13, and switch 30 will be connected to lifting and lowering control circuits 46.
  • casing 24 may be secured through screws 50 to a bracket 51 and a plate 52, that extend about the pushbutton stems 22, 23 and the springs 25.
  • the plate 52 may in turn be secured through screws 53, FIGURE 2, to a portion 54 of an outer housing that is indicated generally by the numeral 55.
  • Housing portion 54 has openings for pushbuttons 20, 21, and a flexible gasket 56 extends between plate 52 and buttons 20, 21 to protect the interior of our control against the entrance of dirt.
  • the housing portion 54 will be secured by suitable means to a housing portion 57 that is formed with a tubular extension 58 to which the flexible control cable 11 is attached.
  • the-cable 11 includes a series of wires, some of which are indicated at 59, extending from the windings of transformers 34, 35 and the fingers of switch 30 to the control circuits 45, 46 and source of power 44 on the hoist 12.
  • FIGURE 2 further shows a wire 60 ⁇ supporting a strain relief bracket 61 that engages the housing portion 57.
  • the novel pushbutton control of our invention will enable the operator of a variable speed hoist to have extremely effective control over the operation of the hoist motor.
  • the operator actually may apply infinite speed control, and the pushbuttons will be interlocked so that there need be no relay or other additional means to prevent conflicting operation of the control circuits.
  • our variable speed control will require no sliding electric contacts of any kind, and that it will need little or no attention for repairs after it is placed in use. While achieving these things, we are able nevertheless to make our control quite small, and it actually is possible to install our control in standard pushbutton control housings that are in use today. We believe, therefore, that the very considerable value of our novel pushbutton control will be understood, and that the merits of our invention will be fully appreciated by those persons who are skilled in the art.
  • a pushbutton operated control for an electric hoist, said control having a housing, a lifting control pushbutton -and a lowering control pushbutton individually mounted for depressing movement relatively to a particular side of the housing, each pushbutton having a stem moving in a linear direction in the housing when the button is depressed from a neutral position
  • interlocking means moved by each pushbutton stem during a first part of the depressing movement of its button whereby to lock the opposed button in neutral position
  • a plurality of electric current regulating devices each operable for effecting a varying current control
  • each of the pushbutton stems being connected to a separate one of said current regulating devices so as to operate that device while the corresponding pushbutton is depressed varying distances
  • a switch having contacts normally in a neutral position and movable to an actuated position, and a portion of said interlocking means coacting with said switch to move its contacts to actuated position when said interlocking means move to lock a pushbutton
  • each current regulating device is a variable transformer mounted on said housing land having a core connected to a pushbutton stem so as to be moved by a pushbutton for varying the output of said transformer.
  • interlocking means include an interlock cam mounted to slide in a transverse direction on the housing, a surface on one pushbutton stem coacting with an end of said cam for sliding said cam, and said switch including a series of contact fingers one of which engages said cam, so that said cam will move said one contact finger alternately into contact with each of two other fingers when alternate pushbuttons are depressed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Push-Button Switches (AREA)
  • Mechanical Control Devices (AREA)
  • Switches With Compound Operations (AREA)
  • Mechanisms For Operating Contacts (AREA)
US525236A 1966-02-04 1966-02-04 Hoist pushbutton control Expired - Lifetime US3469164A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US52523666A 1966-02-04 1966-02-04

Publications (1)

Publication Number Publication Date
US3469164A true US3469164A (en) 1969-09-23

Family

ID=24092458

Family Applications (1)

Application Number Title Priority Date Filing Date
US525236A Expired - Lifetime US3469164A (en) 1966-02-04 1966-02-04 Hoist pushbutton control

Country Status (4)

Country Link
US (1) US3469164A (fr)
DE (1) DE1456457A1 (fr)
FR (1) FR1500603A (fr)
GB (1) GB1149258A (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3675097A (en) * 1970-06-24 1972-07-04 Parks Cramer Co Remote crane motor control with variable direction and speed of movement
US3755725A (en) * 1972-02-03 1973-08-28 American Chain & Cable Co Variable speed load balancer
US4204142A (en) * 1977-12-27 1980-05-20 Scruggs David M Hoist motor control system
US4316130A (en) * 1979-05-29 1982-02-16 Kollmorgen Technologies Corporation Pneumatic device to control the speed of an electric motor
WO2003095352A1 (fr) * 2002-05-08 2003-11-20 The Stanley Works Procedes et appareil de manipulation de charges utiles lourdes au moyen de dispositifs d'assistance intelligents
US6878889B1 (en) 2002-07-15 2005-04-12 Richard R. Horst Garage door opener security device
EP1641006A1 (fr) * 2004-07-28 2006-03-29 Emas Elektroteknik Makina Sanayi Ve Ticaret A.S. Nouveauté dans un appareillage de commande de grue
US20110066335A1 (en) * 2008-05-13 2011-03-17 Kito Corporation Traveling crane operation control apparatus and method
US20130105749A1 (en) * 2011-10-27 2013-05-02 Eurocopter Control means for a lifter device, hoist apparatus, and an aircraft
CN105084214A (zh) * 2010-07-02 2015-11-25 株式会社五合 操作装置以及具备该操作装置的移动装置

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2218635B1 (fr) * 1973-02-19 1976-06-11 Chainette M Bernard Et Fils At
FR2430078A1 (fr) * 1978-06-27 1980-01-25 Telemecanique Electrique Boite pendante pour la commande de mouvements croises d'une machine
DE2926111A1 (de) * 1979-06-28 1981-01-08 Scintilla Ag Elektrohandwerkzeug
JPH0688219B2 (ja) * 1987-10-02 1994-11-09 株式会社日立製作所 可搬式教示装置
DE4229673C1 (fr) * 1992-09-03 1993-08-19 Mannesmann Ag, 4000 Duesseldorf, De
DE4234542A1 (de) * 1992-10-14 1994-04-21 Buehne Werner Abus Kg Hängetaster
DE4412557C3 (de) * 1994-04-11 2001-06-13 Mannesmann Ag Schaltgerät für Handbetätigung und die Umwandlung eines Betätigungsweges in ein elektrisches Signal
FR3055424B1 (fr) 2016-08-23 2019-01-25 Thales Methode de traitement d'un signal issu d'un lidar coherent et systeme lidar associe
FR3099587B1 (fr) 2019-07-31 2021-08-27 Thales Sa Methode d'imagerie par un lidar coherent et lidar associe

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2572295A (en) * 1947-03-20 1951-10-23 Ritter Co Inc Controller for electric systems
US3312122A (en) * 1964-05-25 1967-04-04 Westinghouse Electric Corp Mechanical interlock
US3313877A (en) * 1964-07-10 1967-04-11 Walter G Finch Electronic organ keying device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2572295A (en) * 1947-03-20 1951-10-23 Ritter Co Inc Controller for electric systems
US3312122A (en) * 1964-05-25 1967-04-04 Westinghouse Electric Corp Mechanical interlock
US3313877A (en) * 1964-07-10 1967-04-11 Walter G Finch Electronic organ keying device

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3675097A (en) * 1970-06-24 1972-07-04 Parks Cramer Co Remote crane motor control with variable direction and speed of movement
US3755725A (en) * 1972-02-03 1973-08-28 American Chain & Cable Co Variable speed load balancer
US4204142A (en) * 1977-12-27 1980-05-20 Scruggs David M Hoist motor control system
US4316130A (en) * 1979-05-29 1982-02-16 Kollmorgen Technologies Corporation Pneumatic device to control the speed of an electric motor
US7185774B2 (en) 2002-05-08 2007-03-06 The Stanley Works Methods and apparatus for manipulation of heavy payloads with intelligent assist devices
WO2003095352A1 (fr) * 2002-05-08 2003-11-20 The Stanley Works Procedes et appareil de manipulation de charges utiles lourdes au moyen de dispositifs d'assistance intelligents
US20040026349A1 (en) * 2002-05-08 2004-02-12 The Stanley Works Methods and apparatus for manipulation of heavy payloads with intelligent assist devices
US6878889B1 (en) 2002-07-15 2005-04-12 Richard R. Horst Garage door opener security device
EP1641006A1 (fr) * 2004-07-28 2006-03-29 Emas Elektroteknik Makina Sanayi Ve Ticaret A.S. Nouveauté dans un appareillage de commande de grue
US20110066335A1 (en) * 2008-05-13 2011-03-17 Kito Corporation Traveling crane operation control apparatus and method
US8660759B2 (en) * 2008-05-13 2014-02-25 Kito Corporation Traveling crane operation control apparatus and method
CN105084214A (zh) * 2010-07-02 2015-11-25 株式会社五合 操作装置以及具备该操作装置的移动装置
CN105084214B (zh) * 2010-07-02 2017-07-28 株式会社五合 操作装置以及具备该操作装置的移动装置
US20130105749A1 (en) * 2011-10-27 2013-05-02 Eurocopter Control means for a lifter device, hoist apparatus, and an aircraft
US8925901B2 (en) * 2011-10-27 2015-01-06 Airbus Helicopters Control means for a lifter device, hoist apparatus, and an aircraft

Also Published As

Publication number Publication date
FR1500603A (fr) 1967-11-03
GB1149258A (en) 1969-04-23
DE1456457A1 (de) 1969-06-19

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Date Code Title Description
AS Assignment

Owner name: YALE INDUSTRIAL PRODUCTS, INC., A CORP OF DE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:EATON CORPORATION, AN OH CORP.;REEL/FRAME:004254/0553

Effective date: 19831230