baber/WOPTO huggingface dataset:
Patent GB-1508799-A (GB)
Title: Light emissive semiconductor device
IPC: H01S5/00
Filed: 1974-09-26
Abstract: 1508799 Semiconductor lasers STANDARD TELEPHONES & CABLES Ltd 18 Sept 1975 [26 Sept 1974] 41896/74 Headings H1C and H1K A light-emitting semiconductor device, e.g. a double heterostructure laser, formed of a group III-V compound contains a group III or a group V substituent of significantly different atomic radius than that of the substituted element and in a concentration of not more than 5 atomic per cent. An active laser region 3 is sandwiched between a plurality of GaAs layers 1-5 formed by liquid phase epitaxy and containing varying amounts of A1. The substituent may be In, Sb, P, B, N, Tl or Bi and is also added at least to the layers 2, 4 flanking the active layer 3. The substituent acts to pin dislocations in the crystal lattice, and the doping concentration is such that all the layers 1-5 have the same lattice constant. This may be achieved by using two substituents, being respectively a group III and a group V element and having respectively a larger and a smaller atomic radius than the substituted element.
Patent GB-1522618-A (GB)
Title: Solar cells
IPC: H01L31/05
Filed: 1975-09-29
Abstract: 1522618 Solar cells FERRANTI Ltd 29 Sept 1975 [27 Sept 1974] 41997/74 Heading H1K [Also in Division H2] A support for an array of solar cells 10, Fig. 2, comprises a pattern of conductors 11 on a flexible insulating substrate 12, wherein minor portions 22, 24 of the conductors and the substrate are partially punched out, bent over, and bonded to contacts 14 on the faces 13 of the cells 10 on which radiation is to be incident, and other portions 27 of the conductors 11 are bonded to contacts 16 on the other faces 15 of the cells 10 to connect them in series. The conductors 11 and the substrate 12 may be respectively copper and a polyimide, and terminals may be provided at the ends of columns of cells 10 in the same manner as the interconnections between the cells. In another embodiment four adjacent cells 40, Fig. 5, are connected, two series-connected pairs in parallel, by conductors 41 on a polyimide sheet 12, each conductor 41 having two punched-out portions 22 that are bent over and bonded to the contacts 14 on the light-receiving surfaces of the cells 40. The cells 40 may be covered by glass plates 50 which have a transparent tin oxide coating provided with tin oxide terminal pads 51 which are connected together to drain away any charges that may accumulate. This interconnection may be made by a second pattern of conductors 52 which has punched-out and bent-over portions 53 similar to the portions 22. The conductor patterns 41, 52 may be covered by an insulating sheet which has apertures exposing only the tips of the punched-out portions 22, 53 so as to reduce the probability of short-circuits occurring.  Reference has been directed by the Comptroller to Specification 1,246,837.
Patent GB-970419-A (GB)
Title: Control means for concrete laying machines
IPC: E01C19/48
Filed: 1960-12-06
Abstract: 970,419. Casting kerbs and pipes in situ. A. H. CHENEY. Dec. 6, 1960 [Dec. 11, 1959], No. 42012/60. Heading E1S. Concrete kerbs and pipes are laid by a wheeled machine the forward motion of which to leave the kerbs &c. in position, is controlled by the pressure in the concrete being laid. The track wheels 30 of the machine are driven by a motor 26 the throttle of which is controlled by a slave cylinder 17 and controlled by a master cylinder 16 connected to parallel pivoted links 12 supporting the motor driven worm 5 which drives the concrete through a former 2 which forms the kerb &c. The piston of the slave cylinder 17 is loaded by a spring 20 to maintain a pressure of 60 1bs. to the square inch on the worm 5. The motor 26 is hydraulic and driven by fluid by-passed from the circuit of a pump 27. Modifications of the control of the motor 26 by the worm 5 are described. Specification 837,714 is referred to.
Patent GB-1069766-A (GB)
Title: Improvements in or relating to corner constructions
Inventor: LAWRANCE DOUGLAS WARE
IPC: E06B3/976
Filed: 1964-10-15
Abstract: 1,069,766. Window frame corner joints. QUICKTHO ENGINEERING Ltd. Sept. 10, 1965 [Oct. 15, 1964], No. 42077/64. Heading E1J. A corner construction includes two frame members meeting at an angle the adjacent ends of which are engaged by a corner bracket comprising flanges 14, 15 each formed with a transverse groove or grooves 16 of V cross-section, the frame members having deformed parts 17 to engage therein. The flank of each groove 16 on the side adjacent the apex of the bracket 14-15 is inclined at a shallower angle than the opposite flank, which may be approximately perpendicular to the adjacent flange surface or undercut e.g. at approximately 70‹ to the plane of the flange. The other flank may be at an angle of approximately 20‹. The bracket 14- 15 may be initially extruded and each frame member has a main flange 10, engaging against a flange 14 of the bracket 14-15, and from which side flanges 11 project to engage edges of the flange 14, respectively received in slots provided because of lips 13 on the flanges 11.
Patent GB-1166602-A (GB)
Title: Improved Machine for Attaching Labels and Similar Articles
IPC: D05B3/20
Filed: 1966-09-21
Abstract: 1,166,602. Feeding labels to workpieces. WILLIAM CARTER CO. 21 Sept., 1966 [27 Sept., 1965], No. 42089/66. Headings B8F and B8S] A label from a magazine L, Fig. 4, is carried to a position 44 for attachment to a flat workpiece by a carrier 160 which moves vertically through a circular arc greater than 90 degrees and returns by the same path. In the machine illustrated the label has a turned-over end engaged by the leading edge 162, Fig. 4a, of a carrier with suction holes 172. The carrier moves to a slot 140 in the bottom plate 139 of the magazine and is swung by a rack and pinion 154, 152 (Fig. 4) operated by a pneumatic ram 146. The label is attached by sewing. It is held by suction on a work receiving member 38. After the operator has placed a workpiece over the label, and the machine has started, a clamp, Fig. 4 (Fig. 7, not shown), holds the workpiece against the label and the work and label are moved together, by a member 44, in a square path under a sewing head which thus produces a square seam. The work is subsequently delivered by a pusher (199) (Fig. 1, not shown).
Patent GB-1514526-A (GB)
Title: Servo-controlled fluid pressure actuator
IPC: F15B9/09
Filed: 1976-10-11
Abstract: 1514526 Fluid pressure servomotor systems AUTOMOTIVE PRODUCTS Ltd 11 Oct 1976 [15 Oct 1975] 42140/75 Heading G3P An actuator 11 is under the control of a valve member 15, within the actuator, which is movable to connect respective piston areas 13, 14 to a pressure fluid supply 32 or to drain 34 to move the actuator to restore its position relative to the valve member 15, which is in turn moved by fluid pressure under the control of a valve member 36, and a resilient link 52 from the valve member 15 to the valve member 36 so that movement of the member 36 by an external force is resisted by a force proportional to the displacement of the actuator from a datum position, so that the ultimate displacement is proportional to the said external force. Pressure fluid from conduit 24 passes to drain through fixed orifices 39, 41 in the valve member 15 and variable orifices 37, 38 under the control of the valve member 36 which is actuated by solenoid 51, which receives signals from an autopilot to position a servovalve connected to the actuator 11. When the system is to be operated manually, solenoid valves 53, 54 are de-energized and fluid pressure from conduit 32 forces valve member 58 and plunger 59 into the illustrated position, respectively cutting off fluid to conduit 24 and locking the actuator 11; the valve member 15 is formed in two parts 16, 17 which are normally held in abutment by fluid pressure, but are forced apart by spring 62 when this pressure is cut off, to connect both actuator piston areas to drains. If valve 53 is energized, fluid acting on piston 57 raises the plunger 55 and valve member 58 until pin 61 contacts ring 59, giving the actuator 11 limited freedom of movement and allowing fluid to pass to conduit 24. If valve 54 is energized, fluid pressure is supplied to raise the ring 59 and the actuator is given its full range of movement.
Patent GB-1084492-A (GB)
Title: Change speed gearing
IPC: F16H3/095
Filed: 1965-04-05
Abstract: 1,084,492. Clutches. EATON YALE & TOWNE Inc. April 5, 1965 [April 20, 1964], No. 42190/66. Divided out of 1,084,491. Headings F2C and F2D. The subject matter is identical with that of the parent Specification, the claims being directed to the tiltable clutch members (103, 111) for connecting the radially floating pinions (74, 77) to their drive shafts (69, 61 (see Specification 1.084,491.
Patent GB-1160347-A (GB)
Title: Mass Spectrometer Tubes
IPC: H01J49/38
Filed: 1967-09-15
Abstract: 1,160,347. Mass spectrometers. LEYBOLDHEBAEUS VERWALTUNG G.m.b.H. 15 Sept., 1967 [7 Oct., 1966], No. 42254/67. Heading H1D. The electrodes of an omegatron mass spectrometer are provided with heating means operable during the measuring process, such heating serving to drive off adsorbed gas so that the results obtained are more consistent. Preferably the heating means is a heating resistance which may have bi-filar windings and may also serve as a resistance thermometer in a control system whereby the electrode is automatically held at a desired temperature, e.g. between 100‹ and 200‹ C., preferably 150‹ C. The heating means may be used to bake the electrodes at a temperature between 400‹ and 800‹ C. before a measurement is made.
Patent GB-1409432-A (GB)
Title: Crop driers
IPC: F26B25/00
Filed: 1972-09-12
Abstract: 1409432 Feeding crops C VAN DER LELY NV 12 Sept 1972 [13 Sept 1971] 42392/72   Heading B8E [Also in Division F4] In an apparatus for feeding crop in which crop is deposited in the open end of a chamber 1 and carried by a conveyer 30 to a pair of feeding drums 32 at the other end of the chamber 1, a screen 62 is disposed in front of the drums 32 and is raised once the chamber 1 has been filled. The screen comprises a plurality of parallel belts 63 depending from a support 61 which extends through a sidewall of the container and is attached to a winch 78 operable to wind the belts on or off the support 61. The lower end of the screen is attached by cables 65 to the open end of the chamber. After filling, the open end of the chamber 1 is closed by doors 8, 9. The drums 32 carry resilient tines 34, the tines on the lower drum passing the crop to the tines of the upper drum from which the drop is stripped by adjustable stationary tines 36. The crop then drops into an outlet 40 for transfer to a channel 42 by tines 51 on a drum 50. The channel 42 extends between the housing 52 of a blower to the open end of the chamber 1, and is in communication with a channel 53 leading to a store, a flap being provided to direct the crop either back into the chamber or to the channel 53. The tines 51 form a seal with the inlet 40. For drying the crop the air supplied by the blower is heated and the crop is fed back into the chamber 1 but is separated from the wet crop by a pivotal screen 71. Stones, sand and like impurities fall from the channel 42 into a tube 75 and a bag 74.
Patent GB-1008663-A (GB)
Title: Combustion apparatus for internal combustion engine exhaust systems
Inventor: CLARKE JOHN STANLEY
IPC: F01N3/26
Filed: 1961-11-28
Abstract: 1,008,663. Purifying exhaust gases. JOSEPH LUCAS (INDUSTRIES) Ltd. Nov. 9, 1962 [Nov. 28, 1961], No. 42443/61. Heading FIB. In a combustion apparatus for purifying exhaust gases, the exhaust gases flow from an inlet 2 through space 15a, passage 17, and passages 7a to a mixing zone 19 where they are mixed with air admitted at 11 and flowing through annular chamber 10, pipe 16 and chamber 15, the mixed gases flowing through inlet 20 to a combustion chamber 4 from which the burnt gases escape to outlet 3 through passages 7b alternating with the passages 7a. The passages 7a, 7b, are formed by a corrugated member welded to the casings 4a, 15, the ends of the passages 7a being closed whilst the passages 7b have ends open to the chamber 4 and outlet 3. An igniter 13 may be provided in chamber 4. In a modification the axis of the chamber 4 is inclined to that of chamber 15.
Patent GB-1159343-A (GB)
Title: Improvements in or relating to Electrochemical Cell Electrodes
IPC: H01M4/86
Filed: 1966-09-23
Abstract: 1,159,343. Fuel cell electrodes, LEESONA CORP. 23 Sept., 1966 [30 Sept., 1965], No. 42463/66. Heading H1B. An electrochemical cell electrode comprises a porous metal substrate having one major surface in intimate contact with a catalyst layer throughout which an electrochemically active metal and a hydrophobic polymer are uniformly dispersed and a second major surface entirely free of said metal and polymer. In use the uncoated surface faces the electrolyte of the cell. Suitable substrate metals include Ni, Cu, Fe, Ta, Zr, Au, Ag, Pt, Pd, Os, Ir and Ru. Suitable catalytic metals include noble metal blacks, e.g. Pt, Ru, Pd, Os, Ir, Rh and alloys thereof, and also Cu, Ag, Ni, Au and Co. The polymer may be P.T.F.E., polystyrene, polyethylene, polytrifluorochloroethylene, polyvinyl fluoride, polyvinylidene fluoride and copolymers. The catalytic layer may be covered by a thin film of the polymer, and may be applied by rolling on as an aqueous dough or by spraying. Blockage of the pores of the substrate may be avoided by temporarily filling these, e.g. with polyvinyl alcohol which may be dissolved out in water, or with a frozen liquid. In Examples, a porous nickel sheet is coated on one surface with an aqueous mixture of Pt black and P.T.F.E. in one layer (70 : 30 wt. per cent), or in two layers (90 : 10 then 70 : 30 wt. per cent), each of which is used directly or further coated with P.T.F.E. in a hydrogen/ oxygen fuel cell (28% aqueous KOH electrolyte).
Patent GB-1031237-A (GB)
Title: Improvements in or relating to the manufacture of chains of containers for use in apparatus for vending packaged products
IPC: B65D75/42
Filed: 1964-10-19
Abstract: 1,031,237. Packages; cartons. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Oct. 19, 1964 [Oct. 22, 1963], No. 42505/64. Headings B8C and B8P. Strings of packages for use in vending machines are formed by joining carton blanks or wrappers by sewing so that a double thread extends between adjacent packages. The thread may be of wire and the stitch holes form an opening line indicator or facilitate tearing. The thread may secure in place a separate blank 7 forming a compartment in an erected carton, this blank being of conductive material to act as a screen where part of the contents is to be heated by radio frequency energy.
Patent GB-1007423-A (GB)
Title: Pyrolysis of hydrocarbons
IPC: C07C2/76
Filed: 1961-11-28
Abstract: Acetylene and hydrogen are obtained by the pyrolysis of methane at subatmospheric pressure at a space velocity (volumes of gas at S.T.P. per volume of reactor space per second) of 0.05-20 sec.-1 in which the reaction zone is heated to maintain the inlet and exit temperatures at at least 1250 DEG  C. and the maximum temperature at at least 1500 DEG  C. but not more than 250 DEG  C. above the minimum temperature and quenching immediately.  In a modification a mixture of hydrogen and methane in a mole ratio of 1-39: 1 is pyrolysed at 1-5 atmospheres with a minimum temperature of at least 1200 DEG  C. and a maximum temperature in the range 1450-2000 DEG  C. but not more than 250 DEG  C. above the minimum with an effective space velocity (the space velocity divided by the total pressure in atmospheres) of 0.5-100 sec.-1 atm.-1  Where methane is not mixed with hydrogen the pressure may be 50-115 mm./Hg. and where it is mixed with hydrogen other gases, e.g. nitrogen, may also be present. Heating is preferably effected electrically.  The product is substantially a mixture of hydrogen acetylene and unchanged methane. Multistage operation may be used where methane alone is pyrolysed at a methane conversion to give maximum efficiency of conversion to acetylene and after removing the acetylene the hydrogen-methane mixture is again pyrolysed and the process repeated if necessary.ALSO:Acetylene and hydrogen are obtained by the pyrolysis of methane at subatmospheric pressure at a space velocity (volumes of gas at S.T.P. per volume of reactor space per second of 0.05-20 sec.-1 in which the reaction zone is heated to maintain the inlet and exit temperatures at at least 1250 DEG  C. and the maximum temperature at at least 1500 DEG  C. but not more than 250 DEG  C. above the minimum temperature and quenching immediately.  In a modification a mixture of hydrogen and methane in a mole ratio of 1-39 : 1 is pyrolysed at 1-5 atmospheres with a minimum temperature of at least 1200 DEG  C. and a maximum temperature in the range 1450-2000 DEG  C. but not more than 250 DEG C. above the minimum with an effective space velocity (the space velocity divided by the total pressure in atmospheres) of 0.5-100 sec.-1 atm.-1  Where methane is not mixed with hydrogen the pressure may be 50-115 mm. Hg. and where it is mixed with hydrogen other gases, e.g. nitrogen may also be present.  Heating is preferably effected electrically.  The product is substantially a mixture of hydrogen acetylene and unchanged methane.  Multistage operation may be used where methane alone is pyrolysed at a methane conversion to give maximum efficiency of conversion to acetylene and after removing the acetylene the hydrogen-methane mixture is again pyrolysed and the process repeated if necessary.
Patent GB-1269089-A (GB)
Title: Improvements in digital information transfer system
IPC: G08C25/00
Filed: 1969-08-27
Abstract: 1,269,089. Electric selective signalling; data transmission. GENERAL ELECTRIC CO. 27 Aug., 1969 [3 Sept., 1968], No. 42743/69. Heading G4H. A system for transmitting commands from a central station to controlled devices located in a number of remote stations includes, in the central station, a number of keys for selecting the controlled devices, a digital message generator for generating a unique digital address in response to actuation of a given key and, in the remote stations, a device for enabling the selected controlled device in response to receipt of its unique address and an address complement generator for generating the complement of the address of the selected controlled member, means being provided in the central station for actuating the selected member if the complemented address received from the remote station is correct. The signals are handled within the central and remote units in parallel form and transmitted in serial form. Clock pulses triggered by sync. bits added to the transmissions are used to synchronize the various operations within the central and remote stations and parity bits may also be added. A further one of two keys is depressed to actuate the controlled member as desired, the signal being passed if the compared addresses agree.
Patent GB-1403298-A (GB)
Title: Printed circuit feed for reflector antennas
IPC: H01Q19/13
Filed: 1973-09-11
Abstract: 1403298 Aerials ANDREW CORP 11 Sept 1973 [11 Sept 1972] 42754/73 Heading H4A A reverse feed 20, Fig. 1, for an aerial with a reflector 10, comprises a planar conductor having two substantially identical radiator slots symmetrically disposed on opposite sides of the centre of said planar conductor, a conductive cavity 22 enclosing the rearward surface of said planar conductor, a co-axial feed line 16 extending forward from said centre and having its outer conductor connected to the planar conductor, and its inner conductor extending. therethrough and insulated therefrom. The feed also comprises means within the cavity 22 coupling the inner conductor of the co-axial line to each slot, such that their respective inner edges are excited in opposite phase, and likewise their respective outer edges, to produce substantially in-phase electric field orientation of electromagnetic radiation from the slots. As described, the reflector 10 is parabolic and the feed 20 is positioned and secured by means of a flange 12 with a rigid tubular support boom 14 extending through a central aperture 15 in said reflector. The coaxial cable 16 extends through the boom 14 and terminates in a connector 18 behind the reflector 10. A circular printed circuit board 26 is provided at the other end of the boom 14 the front or outer surface of which is covered by a conically tapered framed protective covering 28 encircling the boom. The cavity 22 is a metal cup which is assembled over the back surface of the board 26, and which is filled with foamed dielectric material 24, introduced by means of apertures 30, Figs. 3, 4. A small central aperture 42 is also provided, for the inner conductor of the cable 16. The front surface of the board 26 has an all-over conductive coating 32 except for a small open centre portion 34 and the two symmetrically disposed radiator slots 36, 38. The outer conductor of the cable 16 is conductively bonded by solder around the portion 34. A strip-line feed circuit pattern 48 is provided on the back surface of the board 26, the inner conductor of the cable 16 being conductively bonded thereto by solder at the centre. The slots 36, 38 are energized by respective parallel or dual end-feed constructions to obtain good impedance matching and wider operating bandwidth, half-wavelength path lengthening conductors 68, 70 being inserted in the feeds to the slot 38. Each feed construction comprises a respective capacitance plate 58, 60, 62, 64 a bandwidth-enlarged slot coupling 59, 61, 63, 65, and a quarter-wavelength extension 72, 74, 76, 78. The open-circuited quarterwavelength extensions act as effective shortcircuits at their inner ends, so the operation is the same as if the ends of the portions 59, 61, 63, 65 were conductively connected through the board 26 to the outer edges of their respective slots. To produce simulation of the TE 11  mode in a circular waveguide, the inner edges of the slots 36, 38 are curved.
Patent GB-1521109-A (GB)
Title: Logic grates
IPC: H03K19/08
Filed: 1975-10-17
Abstract: 1521109 Semi-conductor logic circuits THOMSON-CSF 17 Oct 1975 [18 Oct 1974] 42817/75 Heading H3T A logic gate comprises cross-coupled complementary lateral and vertical transistors TT 1 , the emitters of the transistors being connected respectively to a point of fixed potential and through a voltage dependent resistor REC 1  to an input for logic signals. In the power inverter shown in Fig. 4, diodes D 1 , D 2 , D 3  maintain a fixed potential difference between S 1  and S 2 . A near-ground input through REC 1  turns off TT 1  causing the potential at S 1  to be about - 0À9v and hence that at S2 - 2À4v. TT 2  therfore turns on bringing the point M 2  to about - 1À6v. If the imput changes to about - 1À6v, TT 1  turns on TT 2  turns off and the potential at M 2  is near ground. A NOR-gate may be provided by pluralling devices TT 1  and REC 1 , Fig. 8 (not shown). In another inverter, Fig. 9 (not shown) a further device (TT 3 ) is provided in parallel with the resistor REC 4 . Layouts or realizing the circuits in integrated form are given.
Patent GB-1029287-A (GB)
Title: Improvements in and relating to road and/or rail transport vehicles
Inventor: BONALLACK RICHARD FRANK
IPC: B60J7/04
Filed: 1962-11-13
Abstract: 1,029,287. Vehicle bodies. BONALLACK & SONS Ltd. Oct. 29, 1963 [Nov. 13, 1962], No. 42836/62. Headings B7B and B7L. A rail and/or road vehicle has a chassis 6 carrying runners 15, 16 to slidingly supporting relatively telescoping tilts 7, 8 on rollers 13. Weather joints are provided between the tilts and between the part 7 and the fixed bulkhead 19.