US1443694A - Device for operating hinged or similar members - Google Patents

Description

Jan. 30, 1923.

. 1,443,694 J. MCKECHNIE.

DEVICE FOR OPERATING HINGED 0R EMILAR MEMBl-RRS.

FILED FEB- 3, IQZQA Patented Jan. 30, 1923.

UNITED stares mm orri a JAMES MCKECHNIE, OE BARROW-IN-FURNESS, ENGLAND, ASSIGNOR T0 VICKERS LIMITED, OF WESTMINSTER, ENGLAND. 1

DEVICE FOR OPERATING HINGED OR SIMILAR MEMBERS. a

Application filed Februar 3,1920. Seria1'No.c3 56, 094.

such as a hinged cover is employed for closing in a-water-tight manner. the top of a funnel or an opening in the deck through WhlCll opening a telescopic funnel may pass or relatively to which opening a funnel maybe hinged, the said device being of the k nd comprising a shaft provided with an oscillatory radial vane or piston arranged within a cylinder and adapted to be operated by.

liquid under pressure admitted alternately between opposite faces of the piston and corresponding abutment pieces within the cylinder, thereby enabling the shaft to be moved angularly so as to actuate a member operatively connected thereto.

According to this invention the memberactuating shaft extends concentrically through the workin cylinderwhich has stufl- I ing boxes and glands at its opposite endsfor said shaft to pass through; within the-cylinder is an abutment piece extending across the space between said cylinder and shaft and the shaft carries the oscillatory vane or piston which also extends across said annular space. This oscillatory vane or piston is formed with inlet and exhaust ports and carries a valve for controlling said ports in such manner that a free flow of pressure fluid is permitted at the commencement of the operative movement of the vane or piston and a restricted flow of the exhaust at the termination of said operative movement. The said valve is preferably in the form of a spherical non-return valve which is actuated directly by the pressure fluid itself.

In order that the said invention may be clearly understood and readily carried into effect the same will now be described more fully with reference to the accompanying example ;illustrated by the drawings; in which; I I i i 1 q Figure 1 is a longitudinal vertical section of thesaid device and Figure" 2 is asection' X-X of Figure l.

a denotes the angularly movable or oscillatory shaft, to which the hinged member is fixed in any appropriate manner, the said shaft having'secured thereto the vane or pis ten 7) arranged to operate within thecylinder c in an a'nnular's pace (Z provided be-f tween the shaft andthe cylinder. Disposed within the said space and secured to the cylinder by means of screws 6 is a segmental member efprovided with faces 7, 9 (Figure 2) serving as abutments. The said shaft is adapted to be operated preferably through the medium of oil under pressure which is admitted through the port Z to the space between the abutment f'and the face it of the piston when the shaft is to be moved angularly in the direction of the arrow z'fwhile the port m is open to exhaust. [To effect the reverse movement of the piston oil under pressure is admitted through the port on to the space between the abutment g and the face 7' of the piston while the port Z is open to exhaust,- the shaft being thus caused to move angularlyin the direction of the arrow is. The said ports Z we are connected by appropriate piping provided with a controlvalve m arranged in such a manner. that each of the said ports Z, mcan serve alternately as aninlet and an exhaust port as 7 above stated according as the handle m of the control valve is placed in its full line position or its dotted line position. As the' weight of the hinged member to be operated by the shaft a may be considerable provision is made to check the momentum of the i I i ure 2, will be prevented by the non-return valve being held on its seating by the oil 100 abutment f when the piston is approaching the position represented by full lines in Fig-- taken on the line acting through the port 0 with the result that the said oil is only able to escape through the restricted passage or leakage port q. The motive fluid passage z-with \vhich'the various ports a 0 g" communicate is closed at its inner end by means of asc-rew As shown in Figure 1, the oscillatory shaft:-

a passes through the cylinder 0 which isprovided at the endsthereofwith stufiing boxes *1, s, and glands t, u, leather packing's being provided therein. The stutfing box 1 is formed in a cover 4 wliich'is adapted to be detached so as to permit ready access to the interior of the cylinder for inspection or re- VVhatI claim and desire to secure by liet ters Patent oi the United Statesisa-v l, A pressure fluid operating device consisting in the combination of 'aworking cylinder having at its-periphery two ports each serving alternately as an inlet and outlet port, an oscillatory power transmitting shaft concentric with the working cylinder; a valveless abutment piece in said cylinder 8X5 tending across the annular space between said cylinder and shaft an oscillatory vane or piston on said shaitalso extending across said annular space and having 'a motive fi'uid passage communicating Witha port at the periphery of the vane or piston'andwith two other ports on a face of the vane or piston and means whereby these last mentioned ports admit pressure fluid from the said pe-- ripheral port at the commencement of one stroke of the oscillatory vane: or piston but only one of them serves to exhaust pressure fluid; to said peripheralport during the completion of the other stroke of the oscillatory vane or piston.

2-.-A pressu're'fluid=-' operating device consisting in the combination of a working cylinder liavin g at its periphery two ports each serving alternately as an inlet and outlet stroke of'the'o'scillatory vane o'r piston but only the one of smaller arearisop'erative during the completion of the" other stroke of'said vane or iston; v

a In testimony whereoi, I ailixdnysignw time:

JAMES MoKECHNIE.

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