baber/WOPTO huggingface dataset:
Patent GB-1395752-A (GB)
Title: Oxcillating conveyor
IPC: B65G27/22
Filed: 1972-02-11
Abstract: 1395752 Reciprocating conveyers DAVID BROWN GEAR INDUSTRIES Ltd 7 Feb 1973 [11 Feb 1972] 6434/72 Heading B8A A conveyer comprising a tray 10 suspended on chains (not shown) is oscillated by a fluid pressure cylinder 11 with its piston-rod 17 connected by means of a rubber bush 19 to a buffer 20 secured to the tray 10. The buffer 20 terminates in a stop-plate 21 and co-operates with another stop-plate 22 adjustably mounted on a fixed box 15 and provided with a rubber pad 23. Compressed air is supplied to and exhausted from the cylinder 11, also mounted on the box 15, through conduits 36, 38 under the control of a solenoid-operated spool valve (24), Fig. 4 (not shown), actuated by a timer (42). The buffer 20 contacts the stop-plate 22 before the full return swing is complete so that material or objects on the tray 10 move along the tray 10 under their own momemtum. As shown, the cylinder is double-acting, but it may be single-acting and may also be hydraulically, instead of pneumatically, operated.
Patent GB-1222941-A (GB)
Title: Process for manufacturing synthetic white oils
Inventor: MUTHS ROBERT
IPC: C10G69/12
Filed: 1969-02-06
Abstract: 1,222,941. Hydrogenating polypropylene. ESSO STANDARD SOC. ANON. FRANCAISE. 6 Feb., 1969 [14 Feb., 1968], No. 6439/69. Heading C5E. White mineral oils are prepared by polymerizing propylene in the presence of BF 3  catalyst and catalytically hydrogenating the liquid polypropylene obtained. Preferably the liquid polypropylene has a MW of 100-600 and a boiling range 300-500‹ C. The hydrogenation catalyst may be Ni or a platinum group metal.
Patent GB-567241-A (GB)
Title: Improvements in or relating to mobile floor type charging machines
IPC: B62D5/24
Filed: 1943-04-22
Abstract: 567,241. Steering gears for furnace charging machines. WELLMAN SMITH OWEN ENGINEERING CORPORATION, Ltd., and KAY, I. April 22, 1943, No. 6513. [Class 135] A mobile floor-type charging machine for furnaces, forging manipulator or like machine, comprising in combination two running wheels at the front, a castor mounted on a revoluble vertical shaft at the rear, hydraulic means engaged with the shaft to turn the castor, a steering wheel or the like and a control valve for the hydraulic means operatively connected to the steering wheel and to said shaft so that movement of the steering wheel moves the valve in one direction to cause turning of the castor and movement of such shaft during said turning of the castor returns the valve to its neutral position. As shown in the Figures, the castor comprises a pair of adjacent wheels mounted on a vertical shaft rotated by a pair of opposed pistons acting through a rack and pinion. A toothed wheel 40 loosely mounted on the vertical shaft is coupled through a pinion 41 and reduction gearing with the vertical shaft and carries an eccentric pin coupled by a link 38 with an arm 36 on a shaft 37. The lower end of this shaft has an arm 35 connected by a link 34 with a floating lever 9 connected at the other end by a link 31 with a toothed segment co-operating with a pinion rotatable by the steering wheel 13. An intermediate point of the lever 9 is coupled to the spindle 7 of the control valve 4. This valve comprises spaced lands 5, 5 of the same width as the ports 6 which are connected by pipes 21 with the power cylinders. The valve casing is connected to a pressure supply pipe 19 and to an exhaust pipe 20, the valve member being provided with passages 22 to permit exhaust from the end of the casing opposite the exhaust pipe. In a modification, one end of the floating lever is coupled to the steering wheel and the other end to the control valve, while an intermediate port is coupled by a flexible cable to a pulley on the castor shaft. The cable is maintained under tension by a tension spring.
Patent GB-491535-A (GB)
Title: Improvements in or relating to valve systems for use in water treatment plant
IPC: C02F1/42
Filed: 1937-03-05
Abstract: 491,535. Valve systems for water-treatment plant; softening water; electric motor control systems. UNITED WATER SOFTENERS, Ltd. (Permutit Co.) March 5, 1937, No. 6637. [A Specification was laid open to inspection under Sect. 91 of the Acts, March 4. 1938.] [Class 135] [Also in Groups I and XXXVII] A valve system for controlling the operation of a water-treatment plant which requires periodical reconditioning, for example, a zeolite water softener, comprises a number of fluid-pressure operated valves 1 ... 5, Fig. 1, each of which is controlled by a pilot valve P<1> ... P<5> actuated by an electric motor 59, Fig. 7. The circuits of the motors 59 are controlled by an intermittently moving master control motor 102 which drives a multiple switch C<1> ... C<5>, a rotary circuit breaker 100 for its own circuit, and a resetting switch 101. The operation of the motor and the time of operation of the various processes of softening, draining, backflushing, regenerating and rinsing are controlled respectively by a meter switch 107 operated by a flow meter 106, a softener float switch 108, a wash timer 109, a brine tank float switch 110 and a rinse timer 111. These devices operate on completion of the respective process to close the circuit of the motor 102 which then rotates switch arms 119, 123, 127, 129 and 132 in the circuits of the motors of the pilot valves P<1> ... P<5> into the position to effect the operation of the valves for the next process. The moving of the switch arm 112 of the motor circuit breaker 100 from one contact to another stops the motor in each new position. The meter switch 107, the wash timer 109 and the rinse timer 111 comprise cam operated switches, the cams being driven in the first case by the meter and in the other two cases by motors 162 and 181 respectively through one-way driving devices. These cams are reset after actuation by resetting motors 148, 168 and 187 which are set in motion by the resetting switch 101 at certain positions of the motor 102. A timing switch or means responsive to the quality of the softened water may be used to switch on the motor 102 to initiate the regeneration cycle instead of the flow meter 106 or this may be done manually as required. British Specification 437,856, [Group I], and U.S.A. Specification 1,443,892 are referred to.
Patent GB-561452-A (GB)
Title: Improvements relating to carriage bolts
IPC: F16B23/00
Filed: 1943-04-27
Abstract: 561,452. Carriage bolts. FLEETWOOD, H. C. April 27, 1943, No. 6655. [Class, 89 (i)] Heads of carriage bolts are provided with square, triangular or oval recesses as shown in dotted lines to assist in holding the bolts during tightening of the nuts.
Patent GB-1534821-A (GB)
Title: Dental chairs or like patient supporting devices
IPC: A61G15/10
Filed: 1977-02-17
Abstract: 1534821 Dental chairs R E CAWLEY 17 Feb 1977 [19 April 1976] 06665/77 Headings A4J and A4M A dental chair with a legrest 14 and a backrest 13 pivotally connected to a seat 11 is covered with a plurality of selectively inflatable bladders to vary the surface contour of the chair to suit varying sized patients, the backrest 13 including a first bladder 37 extending transversely adjacent the bottom edge of the backrest 13, a second bladder 39 extending centrally and longitudinally of the backrest 13 and a pair of bladders 38 disposed one on each side of the second bladder 39 adjacent the top of the backrest 13. The seat 11 is covered by a plurality of selectively inflated transverse bladders 31-35 disposed side by side. The legrest 14 carries two transverse bladders 27, 28 adjacent its top edge and a further bladder 29 adjacent its bottom edge. A headrest 47 is carried by a support 48 which is slidably guided in a slot 50 in the backrest 13 and lockable in desired position by a lever actuated cam 51. The headrest includes four pads 68-71 surrounding a square central pad 79 and hinged at their straight inner edges 75-78 to the support. The pads 75-78 overlie selectively inflatable bladders 54, 55, 58, 59 disposed in recesses 61-64 in the support 48 whereby inflation of any one bladder which cause its association pads to swing outwardly and displace the patients head. Inflation and deflation of all of the bladders of the chair may be under the control of an automatic system. The backrest 13 and legrest are adjustably and simultaneously inclinable by a shaft 17 displaceable by a drive unit 16, the shaft 17 being pivotally connected at one end 18 to an arm 19 attached to the backrest 13 and at the other end carrying a wheel 21 bearing on the underside of the legrest 14. Armrests 82, 83 may be pivoted upwardly to an out of use position to facilitate access to the seat 11. The backrest includes side supports 41, 42 which may be pivoted outwardly about a pivot pin 43 and serve as armrests when the chair is adjusted to support a patient in a supine position.
Patent GB-994960-A (GB)
Title: Coal gathering gear and a method of operating the same
Inventor: DOPPE HANS
IPC: E21C35/20
Filed: 1964-02-18
Abstract: 994,960. Mineral-mining installations. BERGWERKSGESELLSCHAFT HIBERNIA, A.G. Feb. 18, 1964, No. 6666/64. Heading E1F. [Also in Division B8] Means, preferably in a mining installation, for loading material onto a conveyer 2 from a surface over which the conveyer 2 is snaked comprises a series of universally flexibly interconnected loading ramps 5 which are drawn along the side of the conveyer as the conveyer is advanced. Two specific constructions of the ramps and guidance thereof with the conveyer are described.
Patent GB-622070-A (GB)
Title: Improvements in and relating to trowelling and other surface treating machines
IPC: E04F21/24
Filed: 1947-03-10
Abstract: 622,070. Road-levelling machines. MASTER VIBRATOR CO., and MASTER ELECTRIC CO. March 10, 1947, No. 6697. Convention date, July 6, 1946. [Class 107] [Also in Group XXIII] A road surface levelling machine comprises a rotary base 1 which supports a plurality of radially directed sweeps 2 so mounted that the angle of inclination of each sweep to the working surface may be varied. A motor 5 mounted on a gear housing 4 drives the shaft 11 of the base through a belt-driven pulley 8 and worm gearing 15, 16, rotation of the gear casing being prevented by a handle 9 on which the engine controls 10 are mounted. The shaft 18 of each sweep is supported in bearings 17, 171 formed in the rotary base and this shaft is bifurcated at 19 to enable two surface plates 20 to be secured thereto. The outer ends of the plates 20 are spaced apart by a U-shaped plate 22 which has provided therein a keyhole slot 23 to receive a stud 24 secured to a guard-ring 3. The sweeps may be simultaneously tilted with respect to the working surface by rock arms 27 secured to each shaft 18 co-operating with a spider 25 that is caused to rotate about the shaft 11 by a bell-crank lever 29 and a screwed rod 28. The sweeps 2 may be completely rotated to present a fresh plate to the working surface.
Patent GB-803443-A (GB)
Title: Improvements in or relating to speed-governed engines
IPC: F02D9/00
Filed: 1956-03-02
Abstract: 803,443. Fluid-pressure servomotor control systems. THORNER, R. H. March 2, 1956, No. 6715/56. Class 135. A speed governor for an engine driving means to generate an air pressure responsive to speed comprises substantially frictionless air pressure responsive means actuating substantially frictionless valve means which controls a servomotor acting on speed-regulating means of the engine. In an embodiment, the engine is a two-stroke Diesel having a blower 15 supplying charging air to a box 16 surrounding the cylinder 10 and speed regulation is effected by adjustment of the rack 26 of the fuel-injection pump 25. The pressure in the box 16 is transmitted through a conduit 73 to a chamber 72 where it acts on a flexible diaphragm 70 connected with a control valve member 42 for a spring-loaded servo-piston 62 connected to the rack 26. A loading spring 76 for the diaphragm 70 is adjustable by a screw 84 to vary the governor setting. The valve member 42, which is supported by a pair of leaf springs 50, 51, is of shuttle type, controlling simultaneously an inlet port 41 from an oil pump 30 and an exhaust port 40 having extension 35 to the engine sump. The pressure in the chamber 33, and consequently in the right-hand end of a cylinder containing the piston 62, is thus varied in response to variations of engine charging pressure. In a modification, a passage is led from the conduit 73 to the valve member 42 so that the servo-piston 62 is actuated by the pressure of the charging air rather than by that of the oil pump 30. Compensation for variations of ambient air temperature may be effected by constituting one of the leaf springs for supporting the valve member 42 as a bimetallic strip. Alternatively, or in addition, the valve member 42 may be subject to the compensating effect of an evacuated or partially gas-filled bellows which is exposed to the ambient atmosphere.
Patent GB-541236-A (GB)
Title: Improvements in or relating to a.c. electric circuit-breakers of the gas-blast type
IPC: H01H33/58
Filed: 1940-04-15
Abstract: 541,236. Gas-blast switches. REYROLLE & CO., Ltd., A., and AMER, D. F. April 15, 1940, No. 6775. [Class 38 (v)] The arc formed between arcing-contacts B<SP>1</SP> C<SP>1</SP> is blown by an external blast, through an insulating nozzle F<SP>1</SP> on an insulator E- which, may be grooved and is carried, with clearance, in a lateral projection D of the insulating housing A, so as to provide a long leakage path between the nozzle and the contacts in a region shielded from the arc-heat and supplied with clean gas. A metal casing A<SP>1</SP>, D<SP>1</SP> and metal lining A<SP>2</SP> are provided. The movable contact C normally bridges the arcing-contacts but the contact C<SP>1</SP> may be movable with the contact C to provide a pre-determined short gap, an isolating break being provided (not shown). The lower part of the nozzle F<SP>1</SP> may be of metal and provided with a cross bar parallel to the arc thus serving as an auxiliary arcing contact as described in Specification 541,235, Fig. 2 (not shown). In Fig. 3, the fixed contact G is carried on spider G<SP>1</SP> in a metal or insulating shell H and on one side of an insulator J provided with an apertured metal or insulating member K. The outer surface of J may be smooth or grooved, as at J<SP>1</SP> to provide a long leakage path within a short axial length. The movable contact L is lowered by gas-pressure or mechanically. Specification 536,451 also is referred to. The Provisional Specification refers also to a blast of gas produced by the arc from solid material.
Patent GB-1193163-A (GB)
Title: Improvements relating to Static Inverter Circuits
Inventor: PEDDER DONALD AUSTIN GRANT
IPC: H02M7/515
Filed: 1967-02-13
Abstract: 1,193,163. D.C. to A.C. converters. INDUSTRIAL INSTRUMENTS Ltd. 9 April, 1968 [13 Feb., 1967], No. 6785/67. Heading H2F. In a 3 phase static invertor, as shown, Fig. 1, after an initial starting period the charging and discharging of commutation capacitors takes place through the load, to substantially reduce energy loss. In operation, initially, thyristors 1, 2, 5, 6, 11 and 12 are gated to conduct simultaneously and supply the load (the conduction periods being indicated in Fig. 2, relative to secondary firing pulses for the commutation of conducting thyristors and which are applied to turn ON thyristors 9 and 10 during this period). Thyristor 10 is fired at the instant indicated so that point R is connected to the negative supply line. Thus commutation capacitors C2, C3 are charged through 5, 10, 11, 12 and 1, 10, 11, 12 respectively, points P, Q becoming positive with respect to R, by a voltage equal to the supply voltage. Subsequently Th9 receives a drive pulse and connects C3, C2 to the positive supply line so that thyristors 1 and 5 are reverse biased and turn off. Load current now flows via 9, C3, 2, load, 11, 12 and via 9, C2, 6, load, 11, 12, in the interval between switching off 1 and 5 and the new conduction period. The current flow through C2, C3, during this commutation interval, falls as each capacitor is first discharged and recharged in opposite directions. Thyristors 2, 6, 11, 12 cease to conduct when the current falls below a holding value. At the start of the next conduction period after commutation is complete, thyristors 1, 2, 7, 8, 11, 12 are gated and turn on. Two sets of thyristors connected to the negative line are now conducting and the next commutation will involve the negative side thyristors, the procedure similar to the above being repeated.
Patent GB-114359-A (GB)
Title: Improvements in Steel Furnaces.
IPC: C21D9/00
Filed: 1917-05-14
Abstract: 114,359. Richmond Gas Stove & Meter Co., and Thompson, J. May 14, 1917. Metal - heating furnaces.-A gasheated furnace for heating small articles, such as steel cutlers &c. previous to hardening, has s tangentialiy arranged heating flame ports or conductors 15 at the upper and lower parts of the heating- chamber. The lower burner is directed upwardly and the upper one downwardly, so that the two flames take helical courses towards one another, the waste gases escaping through an aperture in the vertically-sliding charging-door 6. A tubular work stand is fitted in the middle of the floor of the heating chamber, being provided with a changeable block or plug 22. The furnace may be closed at the top by a movable cover.
Patent GB-539318-A (GB)
Title: Improvements in and connected with mountings for pilot or indicator lights
IPC: F21S8/02
Filed: 1940-04-18
Abstract: 539,318. Lamps &c. attaching. CRABTREE & CO., Ltd., J. A., McLOUGHLIN, H. F., and HILL, W. E. April 18, 1940, No. 6988. [Class 75 (iii)] [Also in Group XXV] Means for securing a lampholder or other electrical accessory or appliance to a panel or like supporting structure comprises a sleeve b adapted for insertion in a hole in the panel from the front and formed with diametrically opposite rectangular openings e in which are mounted screwed rods f carrying nuts g formed with projections k. When the rods f are turned in one direction the projections k swing outwards and are raised to grip the panel. Reversal of the movement causes the projections k to turn into the openings e and enables the sleeves to be withdrawn. The nuts g are formed with incisions l<SP>1</SP> so as to grip the rods f resiliently. An internally threaded flange c at the front of the sleeve receives a coloured indicating lens d.
Patent GB-1182420-A (GB)
Title: A Binder for the production of Fibre-Based Products
Inventor: DALIBOR HORST
IPC: C08L61/20
Filed: 1967-02-14
Abstract: 1,182,420. Aqueous synthetic resin binder compositions. BECK KOLLER & CO. (ENGLAND) Ltd. 14 Feb., 1967 [14 Sept., 1966], No. 6988/67. Heading C3R. [Also in Division D1] . A binder for fibre-based products consists of an aqueous solution of (a) 90 to 99.9% (by wt. solids) of a water-soluble phenol-aldehyde resole or aminoplast resin and (b) 0.01 to 10% of a water-soluble ammonium or amine salt of a copolymer of 6 to 30 wt. per cent acrylic, methacrylic or crotonic acid and correspondingly 70 to 94% of an ester CH 2 =CR.COOR 1  where R is H or CH 3  and R 1  is methyl to butyl, isobutyl, hexyl, octyl, 2-ethylhexyl, decyl or dodecyl. Specified aminoplasts are aldehyde condensates with urea, thiourea, ethylene or propylene urea, dicyandiamide, guanidine or melamine. The resin may be etherified. Fibre-based products.-The binder may be used to make webs, non-woven fabrics, mats, sheeting or tubular shells or inorganic and/or organic fibres, e.g. of silica, silicon carbide, metal, animal hair or nylon. In the examples a non- woven mineral fibre cloth of thickness 50 mm. and unit weight 50 kg/m.<SP>3</SP> is impregnated by spraying, dried and baked for 10 minutes at 180‹ C. and conditioned for 5 days at 20‹ C. and 65% relative humidity. Reference has been directed by the Comptroller to Specification 1,066,042.
Patent GB-1317869-A (GB)
Title: Device for converting an input voltage into an output signal current or vice versa
IPC: H03F3/343
Filed: 1972-02-16
Abstract: 1317869 Auto voltage & current regulation  PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 16 Feb 1972 [19 Feb 1971] 7147/72 Heading G3X [Also in Divisions G4 and H3] A device for the substantially distortion-free conversion of an input voltage into an output current or vice-versa comprises a first and a  second control input and an output for the current or voltage, the first control input being connected to the control electrode of an input transistor which further has a first and a second main electrode between which its main current path extends, which second main electrode also forms a second control input, and is characterised in that a high impedance current supply source is connected in the circuit between the first main electrode and a constant potential supply point whilst furthermore this main electrode is connected via a current feedback path to the control electrode of a first transistor the main current path of which is connected in the circuit between the second main electrode of the input transistor and another constant potential supply point, the output of the device being a point of the latter circuit or of the current feedback path. The specification describes a number of embodiments which primarily comprise distortion-free amplifiers [Figs. 1-8, (not shown); see Divisions H3-5]. In an embodiment comprising a constant-current source, the base of the input transistor T o  is biased from a polentiometer comprising resistors R1, R2 and temperature-compensating diode D1, while its collector is connected to the positive supply point U b <SP>+</SP> via a constant-current device in the form of transistor T3. The first transistor comprises transistor T 1 , the constant output current being produced at to emitter, while transistor T 2 , the base of which is connected to the emitter of transistor T o  but is otherwise left floating, provides the current feedback path. An additional transistor T2' may be used to provide a current source, comprising its collector.
Patent GB-499079-A (GB)
Title: Improvements in or relating to electro-magnetic interrupters or vibrators
IPC: H01H51/34
Filed: 1938-03-07
Abstract: 499,079. Electromagnetic interrupters; switch cases. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. March 7, 1938, No. 7156. Convention date, March 9, 1937. [Class 38 (v)] A vibrator 1 for the transformation of direct or alternating current and which may be used for example for motor-car wireless receivers is suspended by springs 4, 10 in an air-filled casing 2 which is sealed by muffling material such as rubber 12 so as to be as airtight as possible. The arrangement avoids the radiation of rustling noises. The casing 2 may be secured in a second casing 3 hermetically sealed by the same rubber cap 12, intermediate layers 8, 9 of felt or rubber being arranged as shown.
Patent GB-318648-A (GB)
Title: Improvements in centrifugal steam separators for water cooling systems for internal combustion engines
IPC: F01P3/22
Filed: 1928-03-08
Abstract: 318,648. Ellor, J. E. March 8, 1928. Density separators. - A steam and water separator used in the cooling system of an internal-combustion engine has a rotating bowl h in a fixed casing; the bowl is provided with a narrow annular outlet which is sealed by the discharging water against the escape of steam. The casing is cast in three parts e, f, g, the steam discharge pipe g<1> forming part of the casting g. The casting f has an inverted funnel shape and forms one side of the outlet from the bowl h, the other being formed by an annular member h<1> attached to the bowl. Vanes h<2> are arranged in the bowl and enter the space between the pipe g<1> and the member f. The mixture is supplied through the helical channel g<2> to the bowl. This mixture may rotate the bowl, or external means may be employed. The separated water rises up the bowl wall, passes through the annular outlet and falls into the volute gutter e<1>. The steam passes out through the pipe g<1>. When the apparatus is used with the cooling system of an internal combustion engine, the steam passes to the radiator and the water is returned to the jacket; a circulating pump can be included in the water path between the separator and the jacket.