GB271930A - Improvements in pneumatic despatch apparatus - Google Patents

Improvements in pneumatic despatch apparatus

Info

Publication number
GB271930A
GB271930A GB289626A GB289626A GB271930A GB 271930 A GB271930 A GB 271930A GB 289626 A GB289626 A GB 289626A GB 289626 A GB289626 A GB 289626A GB 271930 A GB271930 A GB 271930A
Authority
GB
United Kingdom
Prior art keywords
valve
tube
piston
cylinder
tubes
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
GB289626A
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.)
STURTEVANT ENG CO Ltd
STURTEVANT ENGINEERING COMPANY Ltd
Original Assignee
STURTEVANT ENG CO Ltd
STURTEVANT ENGINEERING 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 STURTEVANT ENG CO Ltd, STURTEVANT ENGINEERING COMPANY Ltd filed Critical STURTEVANT ENG CO Ltd
Priority to GB289626A priority Critical patent/GB271930A/en
Publication of GB271930A publication Critical patent/GB271930A/en
Application status is Expired legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G51/00Conveying articles through pipes or tubes by fluid flow or pressure; Conveying articles over a flat surface, e.g. the base of a trough, by jets located in the surface
    • B65G51/04Conveying the articles in carriers having a cross-section approximating that of the pipe or tube; Tube mail systems
    • B65G51/08Controlling or conditioning the operating medium
    • B65G51/16Controlling or conditioning the operating medium varying, e.g. starting or stopping, gas pressure or flow

Abstract

271,930. Sturtevant Engineering Co., Ltd., and Backhouse, E. Feb. 1, 1926. Pneumatic dispatch apparatus. - Means for automatically reducing or stopping the flow of air through, a pneumatic dispatch system when no transmission is being effected comprise a cylinder 5 communicating with the dispatch tube 4 through a port 9, and fitted at its lower end with a hinged valve 6 adapted to be opened by gravity when no carrier is in the tube 4. A valve 11. sleeved on an axial tube 12 in the cylinder 5. carries a disc 10 at its lower end, and when air admitted by the opened valve 6 raises the disc 10, the valve 11 is adapted to cover ports 13 in the tube 12 and shut off communication between the tube 4 and the upper side of an annular piston 14 fitting in the cylinder 5. The upper part of the cylinder 5 is connected through an adjustable bleed-valve 17 with a suction-pipe 19, so that when the parts 13 are closed the piston 14 rises at a. rate determined by the setting of the valve 17. Near the top of its stroke, the piston 14 engages a cross-bar 20 fixed on a rod in the tube. 12 and attached to the valve 6, which is thus closed. The sleeve valve 11 then falls to open the ports 13 and allow the piston 14 to fall. A disc 31 on the sleeve 11 fits in an inverted dash-pot 30, so that the sleeve. 11 shall not fall during the time for which the flow of air is interrupted in the tube. 4 by the discharge of a carrier, although the longer time required for inserting another carrier in the tube 4 allows the sleeve 11 to fall and reset the control mechanism. In pneumatic tubes of great length, the time during which the piston 14 rises may be extended by an auxiliary piston attached to the lower end of the control cylinder valve rod and working in an oil dash-pot. In a modified construction, adapted to link up two tubes 4 and admit air to the tube in use, the open end of the control cylinder is connected to the tubes by a two-way box, on the underside of which are arranged side by side the inlets for the carriers. Ports inside the box connect the tubes with the air supply, and a swing flap valve, operated by a forked lever carried on a vertical spindle, is adapted to close one or other of the ports, the forked lever being actuated by projections on the hinged closing doors of the tubes. The flap valve is biassed to either side of the centre line so that it will remain on its seat when thrown over.
GB289626A 1926-02-01 1926-02-01 Improvements in pneumatic despatch apparatus Expired GB271930A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB289626A GB271930A (en) 1926-02-01 1926-02-01 Improvements in pneumatic despatch apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB289626A GB271930A (en) 1926-02-01 1926-02-01 Improvements in pneumatic despatch apparatus

Publications (1)

Publication Number Publication Date
GB271930A true GB271930A (en) 1927-06-01

Family

ID=9748051

Family Applications (1)

Application Number Title Priority Date Filing Date
GB289626A Expired GB271930A (en) 1926-02-01 1926-02-01 Improvements in pneumatic despatch apparatus

Country Status (1)

Country Link
GB (1) GB271930A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016112148A1 (en) * 2015-01-09 2016-07-14 Maguire Stephen B Air flow limiter with closed / open sensing
US9550635B2 (en) 2014-02-20 2017-01-24 Stephen B. Maguire Air flow limiter with closed/open sensing
US9550636B2 (en) 2014-02-20 2017-01-24 Stephen B. Maguire Method and apparatus for resin delivery with adjustable air flow limiter
US9604793B2 (en) 2014-02-20 2017-03-28 Maguire Products, Inc. Resin delivery system with air flow regulator
US9937651B2 (en) 2014-02-20 2018-04-10 Novatec, Inc. Resin delivery apparatus and method with plural air flow limiters
US10131506B2 (en) 2014-12-09 2018-11-20 Maguire Products, Inc. Selective matrix conveyance apparatus and methods for granular resin material
US10138076B2 (en) 2015-02-25 2018-11-27 Stephen B. Maguire Method for resin delivery including metering introduction of external air to maintain desired vacuum level
US10144598B2 (en) 2014-02-20 2018-12-04 Novatec, Inc. Variable frequency drive combined with flow limiter set for limiting flow to selected level above design choice
US10175701B2 (en) 2014-02-20 2019-01-08 Stephen B. Maguire Air flow regulator with detector and method for regulating air flow
US10179696B2 (en) 2015-01-27 2019-01-15 Novatec, Inc. Variable opening slide gate for regulating material flow into airstream
US10179708B2 (en) 2014-02-20 2019-01-15 Maguire Products, Inc. Granular material delivery system with air flow limiter
US10280015B2 (en) 2014-02-20 2019-05-07 Stephen B. Maguire Method for adjustably restricting air flow and apparatus therefor
US10414083B2 (en) 2014-02-20 2019-09-17 Novatec, Inc. Multiple sensor resin delivery optimizing vacuum pump operation

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10179708B2 (en) 2014-02-20 2019-01-15 Maguire Products, Inc. Granular material delivery system with air flow limiter
US9550635B2 (en) 2014-02-20 2017-01-24 Stephen B. Maguire Air flow limiter with closed/open sensing
US9550636B2 (en) 2014-02-20 2017-01-24 Stephen B. Maguire Method and apparatus for resin delivery with adjustable air flow limiter
US9604793B2 (en) 2014-02-20 2017-03-28 Maguire Products, Inc. Resin delivery system with air flow regulator
US9937651B2 (en) 2014-02-20 2018-04-10 Novatec, Inc. Resin delivery apparatus and method with plural air flow limiters
US10414083B2 (en) 2014-02-20 2019-09-17 Novatec, Inc. Multiple sensor resin delivery optimizing vacuum pump operation
US10144598B2 (en) 2014-02-20 2018-12-04 Novatec, Inc. Variable frequency drive combined with flow limiter set for limiting flow to selected level above design choice
US10175701B2 (en) 2014-02-20 2019-01-08 Stephen B. Maguire Air flow regulator with detector and method for regulating air flow
US10280015B2 (en) 2014-02-20 2019-05-07 Stephen B. Maguire Method for adjustably restricting air flow and apparatus therefor
US10131506B2 (en) 2014-12-09 2018-11-20 Maguire Products, Inc. Selective matrix conveyance apparatus and methods for granular resin material
WO2016112148A1 (en) * 2015-01-09 2016-07-14 Maguire Stephen B Air flow limiter with closed / open sensing
US10179696B2 (en) 2015-01-27 2019-01-15 Novatec, Inc. Variable opening slide gate for regulating material flow into airstream
US10138076B2 (en) 2015-02-25 2018-11-27 Stephen B. Maguire Method for resin delivery including metering introduction of external air to maintain desired vacuum level

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