GB923724A - Improvements in and relating to suction lifting equipment - Google Patents

Improvements in and relating to suction lifting equipment

Info

Publication number
GB923724A
GB923724A GB3678659A GB3678659A GB923724A GB 923724 A GB923724 A GB 923724A GB 3678659 A GB3678659 A GB 3678659A GB 3678659 A GB3678659 A GB 3678659A GB 923724 A GB923724 A GB 923724A
Authority
GB
United Kingdom
Prior art keywords
pads
valve
vacuum
suction
pressure
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
Application number
GB3678659A
Inventor
Henry Jackson Stretton
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.)
GD Peters and Company Ltd
Original Assignee
GD Peters and Company Ltd
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 GD Peters and Company Ltd filed Critical GD Peters and Company Ltd
Priority to GB3678659A priority Critical patent/GB923724A/en
Publication of GB923724A publication Critical patent/GB923724A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/02—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by suction means
    • B66C1/0237—Multiple lifting units; More than one suction area
    • B66C1/0243—Separate cups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/02—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by suction means
    • B66C1/0212—Circular shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/02—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by suction means
    • B66C1/0218—Safety measures, e.g. sensors, duplicate functions

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Abstract

923,724. Suction lifting devices. G. D. PETERS & CO. Ltd. Oct. 31, 1960 [Oct. 29, 1959], No. 36786/59. Class 78 (4). In a suction lifting apparatus the vacuum in the pads 3 is released by a valve 21 which opens in response to differential air pressure produced when the pads are disconnected from a vacuum reservoir 11. The pads are connected to the reservoir 11 by an electromagnetically operated valve 19 controlled by push-buttons 32. When the valve member 27 is in its upper position the reservoir 11 is connected to pads 3 through pipes 17a, 17, 23 and 5. A constriction 24 in the pipe 23 produces a drop in pressure in a chamber 14 which moves a diaphragm 16 and the valve 21 upwards to allow suction to develop in the pads 3. Once the valve 21 is closed it is held closed by reduced pressure in a chamber 15. To release the vacuum, the valve member 27 is moved to the position shown to connect the pipe 17 to atmosphere through a pipe and filter 29, 30. This causes an increase in pressure in the chamber 14 which moves the diaphragm 16 and the valve 21 downwards, thus admitting air to the suction pads. The opening movement of the valve 21 is aided by gravity. A micro-switch 31 actuated by the valve 21 ensures that a motor 10 runs continuously to maintain a vacuum when an article is being lifted. At other times a pressureresponsive switch 25 controls the motor 10. When the vacuum in the suction pads reaches a value at which the load may be lifted in safety, a pressure-responsive switch 35 extinguishes a red light and lights a green one. The constriction 24 by preventing a sudden change in the vacuum pressure when suction is first applied to the pads ensures that the green light will not light up prematurely. To prevent rotation during lifting, the whole apparatus is suspended from a hoist mechanism by a rope which passes under two horizontallyspaced pulleys mounted thereon. The apparatus can be steered during lifting by a handle 42. Specifications 830,393, 830,394 and 876,370 are referred to.
GB3678659A 1959-10-29 1959-10-29 Improvements in and relating to suction lifting equipment Expired GB923724A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3678659A GB923724A (en) 1959-10-29 1959-10-29 Improvements in and relating to suction lifting equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3678659A GB923724A (en) 1959-10-29 1959-10-29 Improvements in and relating to suction lifting equipment

Publications (1)

Publication Number Publication Date
GB923724A true GB923724A (en) 1963-04-18

Family

ID=10391176

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3678659A Expired GB923724A (en) 1959-10-29 1959-10-29 Improvements in and relating to suction lifting equipment

Country Status (1)

Country Link
GB (1) GB923724A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3782560A (en) * 1971-11-19 1974-01-01 Eastman Kodak Co Labelling machine with pneumatic monitor
US4557659A (en) * 1982-09-14 1985-12-10 M. Scaglia S.P.A. Device for supporting and handling loads by means of vacuum operated suction pads
EP0220407A1 (en) * 1985-08-30 1987-05-06 Carmen Neider Suction gripping device
US5310232A (en) * 1990-09-26 1994-05-10 Bartholomy & Co. Vacuum lifter
EP1232990A2 (en) * 2001-02-15 2002-08-21 Trumpf Sachsen GmbH Individual control for suction gripper in a loading device with a plurality of suction grippers

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3782560A (en) * 1971-11-19 1974-01-01 Eastman Kodak Co Labelling machine with pneumatic monitor
US4557659A (en) * 1982-09-14 1985-12-10 M. Scaglia S.P.A. Device for supporting and handling loads by means of vacuum operated suction pads
EP0220407A1 (en) * 1985-08-30 1987-05-06 Carmen Neider Suction gripping device
US5310232A (en) * 1990-09-26 1994-05-10 Bartholomy & Co. Vacuum lifter
EP1232990A2 (en) * 2001-02-15 2002-08-21 Trumpf Sachsen GmbH Individual control for suction gripper in a loading device with a plurality of suction grippers
EP1232990A3 (en) * 2001-02-15 2005-10-26 Trumpf Sachsen GmbH Individual control for suction gripper in a loading device with a plurality of suction grippers

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