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81. 发明专利

GB785830A Improvements in or relating to agricultural machines 未知
公开(公告)号：GB785830A
公开(公告)日：1957-11-06
申请号：GB270355
申请日：1955-01-28
申请人： WILLIAM THOMAS TEAGLE
IPC分类号： A01C17/00
摘要： 785,830. Seed or fertilizer distributers. TEAGLE, W. T. Jan. 23, 1956 [Jan. 28, 1955], No. 2703/55. Class 6(1). A machine such as a seed or fertilizer distributer which is carried on the hydraulic lift linkage 4 of a tractor and which has a belt and pulley system for transmitting drive from a power shaft 17 on the tractor to a rotary device such as the distributer 7 on the machine, is provided with resiliently mounted idler pulleys 20 for guiding the bolt 18 round a pulley 37 and clamping means for clamping the belt 18 to the pulleys 20 to form a bight 23 in the belt for engagement with the pulley 37 when the machine is raised to its working position and for causing disengagement of the belt 18 and the pulley 37 when the machine is moved to a position of rest on the ground. Fig. 4 shows the machine in a position of rest with the belt clamped by means of a device 31 adjustably mounted on an arm 36 mounted on a member 24 pivoted in the frame 9 of the machine. The pulleys 20 are mounted on arms 23 pivoted on the member 24 and urged into contact with the device 31 by springs 32. When the machine is in the raised position and the belt 18 is coupled on the pulley 37 the arms 23 are in contact with adjustable stops 38, the belt being tensioned by springs 28 which allow limited movement of the member 24. The invention may be applied to a machine for cutting weeds or grass on which a rotary cutter is supported by a frame for rotation about a vertical axis. In such application the arrangement is reversed so that the belt is coupled to the pulley when the machine is in a lowered working position and uncoupled when the machine is raised by the lift linkage. Specification 785,829 is referred to, and Specification 747,274 is referred to in the Provisional Specification.

82. 发明专利

GB777495A Improvements in shock-absorbing air cushions 未知
公开(公告)号：GB777495A
公开(公告)日：1957-06-26
申请号：GB3523354
申请日：1954-12-06
申请人： GQ PARACHUTE COMP LTD , JOHN ROTHWELL MITCHELL , WILLIAM THOMAS ROLLINGS
IPC分类号： B64D1/14 , F16F9/04
摘要： 777,495. Shock absorbing air cushions. G. Q. PARACHUTE CO., Ltd., MITCHELL, J. R., and ROLLINGS, W. T. Dec. 5, 1955 [Dec. 6, 1954], No. 35233/54. Class 108(3). A shock-absorbing air cushion for a load (not shown) falling to the ground, comprises at least one surface having sufficient porosity to permit escape of air under slight cushion internal air pressure, and at least one outlet valve 36, or like opening, for escape of air under a higher cushion pressure. As shown, the cushion is formed from top and bottom panels and side walls, all of canvas, .which thus constitutes the porous surfaces. The cushion is divided by internal canvas diaphragms, Fig. 1 (not shown) into six compartments, each having a respective inlet valve 31, and respective outlet valves 36, Figs. 4 and 5, Each valve 31 comprises a respective opening 34 in the canvas base and a canvas flap valve member 31a reinforced by a vulcaned fibre panel. Cross bracing tapes 35 are stretched across the openings 34 beneath which a plywood frame 12 is retained by canvas pockets 13-16. The outlet valves 36 comprise an opening 36a and a flap 38 of similar construction to the flaps 31a of the inlet valves 31. The flaps 38 are adapted to be closed under slight internal cushion pressure. Under high internal pressure, following impact of the cushion with the ground, the flap 38 is blown through the opening 36a to cause a more rapid deflation of the cushion. On descent of the cushion, escape of air through the porous surfaces is made up by entry of air through the inlet valves 31. A plurality of cushions may be secured together by lacing.

83. 发明专利

GB763598A Improvements in sound recording and reproducing systems 未知
公开(公告)号：GB763598A
公开(公告)日：1956-12-12
申请号：GB1403253
申请日：1953-05-19
申请人： FREDERICK WILLIAM THOMAS SHORT
IPC分类号： G11B15/02
摘要： 763,598. Centralized dictation systems. SHORTER, F. W. T. May 19, 1954 [May 19, 1953], No. 14032/53. Class 40 (4). In a system wherein remote stations which are electrically connected to the central apparatus through relays controlled by switches from the stations are enabled to make, and play-back recordings, a selector mechanism is locked against operation from other stations when one station is actively connected to the recording apparatus and play-back to a user is limited to his own recording. Operation of the " Unit on " button, Fig. 2, operates relay 11 to drive the selector motor by increasing the voltage supplied thereto from transformer t, to the position allotted to the user where relay 10 is energized to release relay 11. The open contacts of relay 10 in the circuit of relay 11 provide the lock-out facility and lamp a indicates to the user that he has control. Power is conveyed to the user station over line B 1 and is applied to control master relays 1, 2 and 3 to record, rewind, and play, by the appropriate mechanically locking push-button. The operation of a push-button releases any previously locked button. Rewinding over lead F4 is prevented when a user first takes control since the operation of the rewind button would energize relay 9 over the mechanically-operated contacts 13a to open the circuit of the rewind relay 2. Mechanical contacts 13a are closed when the timing device is reset by the previous user. Open contacts 13b, also on the timing device, prevent the playing back of existing recording on the tape. Operation of the " record " button energizes relay 1 and switches the amplifier for use in the required direction, relay 1 operating relay 5 to drive the motor in the desired direction. Interlocking contacts on relay 1 prevent simultaneous actuation of the other master relays and relay 5 energizes various mechanical circuits, i.e. the brake lifting solenoid on the dictaphone apparatus. Transcribing stations described with reference to Fig. 3 (not shown) have unlimited winding facilities in both directions and may read all recordings. Fast forward running is provided by an additional button. Specification 744,259, [Group XXXVIII], is referred to.

84. 发明专利

GB762873A Improvements in torque conversion and transmission apparatus 未知
公开(公告)号：GB762873A
公开(公告)日：1956-12-05
申请号：GB2552653
申请日：1953-09-15
申请人： JAMES ALBERT CAVANAGH , HENRY WILLIAM THOMAS IRELAND
发明人： LANGFORD LOUIS
IPC分类号： F16H47/12

85. 发明专利

GB762047A Foldable pushchairs 未知
公开(公告)号：GB762047A
公开(公告)日：1956-11-21
申请号：GB2330354
申请日：1954-08-11
申请人： CLIFFORD WILLIAM THOMAS JENKIN , THOMAS HENRY JENKINS
IPC分类号： A47D1/06 , A63H3/52
摘要： 762,047. Push chairs. JENKINS, C. W. T. and JENKINS, T. H. May 25, 1955 [Aug. 11, 1954], No. 23303/54. Class 108(1). A push chair which may be folded by pivoting a handle 17 about a point 18 to collapse pivoted frame links 10, 11, 13, and 16 may be held locked in the extended position by a pair of links 23, 25 on each side. In this position the links are overset and rest against stops formed by sleeves surrounding the pivots 15. To collapse the chair, the link 23, which is U-shaped and extends across the back to form a link of the other link pair, is raised to move the aligned pivots 24 upwardly and bring the links to an underset position shown dotted, thus permitting the handle 17 to pivot. Specification 762,065 is referred to.

86. 发明专利

GB758876A Improvements relating to collapsible tube holders 未知
公开(公告)号：GB758876A
公开(公告)日：1956-10-10
申请号：GB1453454
申请日：1954-05-18
申请人： WILLIAM THOMAS TURNER
IPC分类号： B65D35/28

87. 发明专利

GB738245A Improvements in or relating to ventilation devices 未知
公开(公告)号：GB738245A
公开(公告)日：1955-10-12
申请号：GB2906553
申请日：1953-10-21
申请人： WILLIAM THOMAS SCOTT
IPC分类号： F24F7/00
摘要： 738,245. Ventilators. SCOTT, W. T. Oct. 20, 1954 [Oct. 21, 1953], No. 29065/53. Class 137. A detachable fitting for controlling the flow of air through an air brick ventilator B comprises a backplate A which is clamped tightly over the outer face of the ventilator by hookshaped bolts F and is provided with a rectangular opening C of a size sufficient to allow the entry of enough air to ventilate the room, triangular brackets D, having stops D 1 projecting inwardly from their sloping front edges, being arranged at each side of the opening C to accommodate a flap E which, in the event of a strong wind, is blown inwardly to close the opening C. A packing H prevents the ingress of air between the rear surface of the back plate A and the surface surrounding the ventilator. Pads made e.g. of rubber may be provided either on the edges of the flap E, or alternatively on the stops D 1 of the triangular brackets D. The flap E may be hinged to the back plate A at its lower edge if required. In a modification the flap E is hinged along the outer edge of the top plate of a box-like member which is open at the front and at the bottom and is arranged over the opening C.

88. 发明专利

GB705399A Improvements in or relating to hay sweeps 未知
公开(公告)号：GB705399A
公开(公告)日：1954-03-10
申请号：GB853051
申请日：1951-04-12
申请人： WILLIAM THOMAS THOMPSON , THOMAS ALDERSON , JOHN FRANCIS THOMPSON
IPC分类号： A01D87/08
摘要： 705,399. Hay-sweeps. THOMPSON, W. T., ALDERSON, T., and THOMPSON, J. F. April 15, 1952 [April 12, 1951], No. 8530/51. Class 6 (3). [Also in Group XXX] A tractor-pushed hay-sweep has metal tines I each with an upstanding longitudinal reinforcing rib 3 which engages a slot 6 in each of two transverse frame bars 4, 5, separate plates 7 being provided for removably securing the tines in place. At the outer end, the rib is tapered off and the tine is shaped and curved upwardly. The end portions 9 of the frame bars may be hinged at 10 to swing upwardly to lessen width for travelling or to provide a sweep of scoop form. The sweep is mounted on the tractor by a hinge bar 13 allowing free rise and fall during working or to permit raising by winding gear or the power lift on the tractor.

89. 发明专利

GB691437A Improvements in display, advertising and like devices 未知
公开(公告)号：GB691437A
公开(公告)日：1953-05-13
申请号：GB1021651
申请日：1951-05-01
申请人： WILLIAM THOMAS MARCHMENT
IPC分类号： G09F13/00
摘要： 691,437. Thermal switches. MARCHMENT, W. T. April 22, 1952 [May 1, 1951], No. 10216/51. Class 38 (v) [Also in Groups XVIII and XL (a)] A sign (see Group XVIII) is intermittently actuated by a bimetallic strip 12, Fig. 1, which is heated by current from a transformer 11 and which engages a fork connected to an arm 16 and so rocks the arm between two stable positions. A mercury switch 13 which is connected in series with the current supply from the transformer is mounted on the arm 16 and so makes and breaks the circuit as the arm is rocked. In a modification, the bimetallic strip may form part of the sign and operates the mercury switch through a system of levers. In another construction, Fig. 7, a sign which includes two bimetallic strips 60, 61 is intermittently operated by a switch which comprises a shoe 67 and a member 66. When these are in contact with each other as shown, current is supplied to the bimetallic members 60, 61 and these tend to bend. This is resisted by the engagement of the shoe 67 with a non-metallic detent 69. When the pressure in the strips 60, 61 becomes great enough the shoe is snapped over the detent and breaks the circuit. The shoe then returns to its initial position this being aided by the back of the detent which is sloping. In a modification, movement of the shoe is resisted by a permanent magnet instead of a detent.

90. 发明专利

GB687800A Improvements in or relating to grinding machines for sharpening blades of knives or the like 未知
公开(公告)号：GB687800A
公开(公告)日：1953-02-18
申请号：GB2875050
申请日：1950-11-24
申请人： OLIVER ENGINEERING SURREY LTD , WILLIAM THOMAS OLIVER
IPC分类号： B24B3/54
摘要： 687,800. Sharpening knife blades. OLIVER ENGINEERING (SURREY), Ltd., and OLIVER, W. T. Nov. 26, 1951 [Nov. 24, 1950], No. 28750/50. Class 60. A grinding machine for sharpening blades of knives or the like has a main casting 1 housing an electric motor which drives directly or through gearing a driving shaft mounted in bearings' on the casting. The driving shaft has keyed thereto a double V-pulley connected by an open belt and a crossed belt to V-pulleys on driven shafts which carry y grinding wheels 12, 12 1 , 13, 13 1 . The grinding wheels are enclosed by shrouds 14, 15 secured to the casting. The belting is located outside the casting 1 and is enclosed by a casing secured to the casting and having ventilating holes; a cover 18 with ventilating holes 19 is secured to the other end of the casting 1.

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