baber/WOPTO huggingface dataset:
Patent GB-1019741-A (GB)
Title: Solid state devices
IPC: H01L29/00
Filed: 1962-07-26
Abstract: 1,019,741. Semi-conductor devices. RADIO CORPORATION OF AMERICA. July 26, 1962 [Aug. 17, 1961], No. 28808/62. Heading H1K. A solid state device comprises two electrodes on a thin semi-conductor layer spaced apart by a gap less than 100 Á and a conductive control electrode overlying the gap and separated from the electrodes by an insulating film less than 2 Á thick. Figure 1a shows ohmic electrodes 12 and 14 acting as cathode and anode in contact with semi-conductor layer 16 on a support 10 of glass, ceramic or quartz. A thin layer 18 of insulating or wide energy gap material is provided on layer 16 and a control electrode 20 overlies the gap between electrodes 12 and 14. The potential applied to electrode 20 (positive if layer 16 is N-type material) from input source 22 controls the current between electrodes 12 and 14. The semi-conductor material 16 may consist of cadmium sulphide (preferred) or germanium, silicon, germanium-silicon alloys, the phosphides, arsenides and antimonides of aluminium, gallium and indium, II-VI, compounds such as the sulphides, selenides and tellurides of zinc and cadmium or zinc oxide. The insulating film 18 may be made of silicon monoxides, silicon dioxide, calcium fluoride, aluminium oxide or zinc sulphide. Electrodes 12 and 14 may consist of films of indium, gold, or copper and the electrode 20 of gold or aluminium. The gap between electrodes 12 and 14 is less than 100 microns and preferably between 0À1 and 20 microns. The layers may be produced by evaporation and masking techniques; masking may be effected by utilizing a thin wire as a shield for a first deposition and carrying out further deposition after moving the wire by a screw adjustment a distance less than its diameter, to provide a thin strip of shielded area. If aluminium is used for the control electrode produced by deposition at a pressure of 10<SP>-5</SP> mm. Hg a thin film of aluminium oxide forms under the aluminium electrode, thus providing a satisfactory insulating layer of 100 Š thickness. Various other embodiments are described in which the order and position of the layers and electrodes are interchanged; more than one control electrode may be provided. Fig. 3 shows three units connected in series each comprising cathode and anode electrodes 12 and 14 and a control electrode 20 (the semi-conductor and insulating layers are not shown in the drawing). Voltage is supplied to the anodes through strips R L1 , R L2  and R L3  of evaporated semi-conductor material which act as load resistors. In other embodiments, a plurality of control electrodes are provided between the pair of current carrying electrodes; if in series the arrangement requires all to be conditioned for current to flow thus providing an " and " gate while if in parallel any one conditioned will provide current flow thus providing an " or " gate.
Patent GB-175677-A (GB)
Title: An improved machine for cutting sheet material
IPC: B21D43/28
Filed: 1920-10-12
Abstract: 175,677. Johnson, C. B., and Lamb & Nash Co. Oct. 12, 1920. Shearing.-A machine for shearing both ends of a sheet has cutters and positive feeding-means which operate on the sheet alternatelv. The sheet is fed by rolls 97, Fig. 2, to a pair of rolls 34, 35, of which the roll 35 is constantly driven through bevel-gears 39, 40, 43, Fig. 1, shaft 44, and spur gears 45, 22, Fig. 5, by the gear 46, and the roll 34 is idle and pressed upward by cams 33, Fig. 2, on a shaft 32, while the operating-lever 31 is held in its raised position by a gravity or spring-held pin 50. The sheet strikes a trip 79 which acting through link-work 74 withdraws a catch 71 to allow a spring-pressed stop 62, Fig. 2, to rise into the path of the sheet. When the sheet strikes the stop this acts through link-work 60, 58, 53 to withdraw the pin 50 and allow the lever 31 to fall so that the roller 34 is lowered and the feed ceases. At the same time a cam 30, on the lever 31, releases a pin 2,6,- Figs. 1 and 5, and allows a spring 25 to force a pawl 23 into engagement with an internal ratchet 24 of the gear 22 which is constantly driven by the gear 46 and thus drives the shaft 20 which, acting through eccentrics thereon, operates pivoted shear blades 12, 14 to trim both ends of the sheet. The blade 14 has a projection 70, Fig. 2, which presses the stop 62 below the level of the table, where it is held by the catch 71 to allow the trimmed sheet to pass over it. The blade 12 carries a spring catch R7 which, on the return, lifts the lever 31 and cam 30 to force in the pin 26, disconnect the pawl 23 and stop the blades 12, 14 in their highest position. The cams 33 at the same time lift the roller 34 so that the sheet is fed out of the machine to driven rolls 99. The framing carrying the blades 13, 14, stop 62, &c. can be adjusted by a screw 113 to suit sheets of varying' length, the bed 36 being in sections..
Patent GB-698940-A (GB)
Title: A commutating system for impressing upon a single transmission channel varying voltages from two separate sources
IPC: G01S1/02
Filed: 1951-06-12
Abstract: 698,940. Valve gating circuits. BENDIX AVIATION CORPORATION. June 12, 1951 [June 26, 1950], No. 28827/52. Divided out of 698,909. Drawings to Specification. Class 40 (vi). The subject-matter of this Specification is identical with that described with reference to Fig. 8 of the Specification 698,909. The claims of the present Specification are directed to a commutating system for impressing upon a single transmission channel signals from two separate sources for alternate periods.
Patent GB-839559-A (GB)
Title: Improvements in or relating to machines adapted for use in assembling electrical components upon workpieces
IPC: H05K13/04
Filed: 1956-09-21
Abstract: 839,559. Assembling electrical components on circuit boards. BRITISH UNITED SHOE MACHINERY CO. Ltd. Sept. 21, 1956 [Sept. 23, 1955], No.-28880/56. Addition to 802,658 Class 83 (2). A machine for assembling an electrical component, such as: an I.F. transformer 24, Fig. 6, upon a workpiece such, as a printed wiring board 22, comprises an inserting device 78 reciprocable towards the workpiece and adapted to press contact elements 98 of the component into a socket or sockets 96 in the workpiece, and means 126, Fig. 8; for feeding components to the inserting device. The machine is of the kind described in the parent Specification wherein wiring boards 22 are fed successively to a work support 20, located thereon by pins 90, Fig. 8, engaging in holes 92, Fig. 6, and wherein the ,inserting device 78 engages a component 24 and moves it on to the board whilst an anvil 184 is,raised to back up the board. The anvil is raised by an air motor 12, Fig. 1, acting through linkage..30, 174, 173, 172, 176 and toggle links 180, 178; the stroke of the anvil is adjustable by a screw 179. Different kinds of exchangeable anvils 170, Fig. 1, or 184, Fig. 6, may be used to suit contact elements 98 which may each pass through a separate slot 96 and then be bent under or may be snap-in prongs 94, Fig. 8, passing through a single hole in the board 22. The air motor 12, also operates the inserting means 78 through linkage 30, 40, 38, 52, the stroke being limited by screws 44, 46, 50. Spring-biased lost motion is provided for both the inserting device and the anvil. The transformers 24 are placed, usually as an assembly, in a magazine 186, Fig. 8, within a hopper 100. On each downstroke a pusher 104, Fig. 1, actuated through linkage 108, 110, 112, 116, by a solenoid 120, removes the lowest transformer in the magazine and causes it to fall down a shoot 126 leading to the inserting device. On the subsequent upstroke the transformer falls on to a support 130 pivoted at 132 and retained in a horizontal position by a torsion spring 136. During the next downstroke the transformer is engaged by portion 82 of the inserting device and is pressed against the adjacent walls 84, 86 thereof by a pivoted finger 142 actuated from the solenoid link 110 through a flexible cable 162. The inserting device lowers the transformer, depresses the support 130 about its pivot and presses the contact elements through the board 22. The finger 142 is released on the upstroke. Different kinds of exchangeable inserting devices are used for different components and are adjustable about a vertical axis upon release of a clamping screw 70, Fig. 1. The machine is started by depressing a treadle which energizes the solenoid 120 and the latter also controls the main air valve 28 of the motor. The machine may be placed at. one of several work-stations through which the wiring boards are fed automatically as described in Specification 802,659. Reference has been directed by the Comptroller to Specification 802,660.
Patent GB-305071-A (GB)
Title: Improvements in scissors
IPC: B26B13/12
Filed: 1927-10-29
Abstract: 305,071. Conrad, S. E. Oct. 29, 1927. Scissors are provided with finger grips in the form of curved branches or forks corresponding to portions of the usual elliptical loops. The forks may open forwardly, laterally, rearwardly or in opposite directions as shown in Fig. 2. They may lie in one plane or may be twisted out of the plane of the blades. A spring r may be fitted to assist manipulation.
Patent GB-862169-A (GB)
Title: Process and apparatus for charging shaft furnaces and the like
IPC: C03B3/00
Filed: 1958-09-09
Abstract: 862,169. Charging shaft furnaces. UNION DES VERRERIES MECANIQUES BELGES S.A. Sept. 9, 1958 [Sept. 21, 1957], No. 28886/58. Class 51 (2). Apparatus for charging shaft furnaces, particularly glass-making furnaces of the type disclosed in Specifications 645,951. and 646,000, comprises a hopper 4 with a perforated or mesh base 7 fed with glass raw materials from a sheet 19, a hollow central tube 8 on which is rotatably mounted a sleeve 8e carrying arms 9a, 9b, and bent scrapers 11 pivotally mounted on the arm 9a and attached to the arm 9b by springs 12b. Material leaving the shoot 19 is moistened by sprays 21<SP>1</SP>, 21<SP>11</SP> or by a ring spray 20 to give a water content of 5-8<SP>%</SP>. This is sufficient to give the material pressed through the perforations in the base 7 a certain cohesion, but as it leaves the base contact with hot gases and radiation from the shaft dries the material, causing it to break into granules. The radial arms 9b are connected by a frame 10 carrying vertically adjustable ploughs 13. The sleeve 8e also carries a series of vibratory hammers 18 for keeping the base perforations clear.
Patent GB-204926-A (GB)
Title: Improvements in or relating to claw settings for securing stones or other ornaments upon jewellery and the like
IPC: A44C17/02
Filed: 1922-10-26
Abstract: 204,926. Jennens, W. F. Oct. 26, 1922. Gems and the like.-A claw-setting comprises a single sheet of material 1 bent to a cup shape and having a series of claws or fingers 2 at its edge for retaining a number of stones or other ornaments in recesses or compartments 3 formed in the cup. In the form shown, the setting 1 for the outer ring of stones is thus formed, and alternate claws are used to retain the setting of the centre stone or stones, which is or are formed separately and attached to the outer setting by solder. The outer setting 1 may be provided with a central raised portion 9 to form a support for the inner setting 5.
Patent GB-1132529-A (GB)
Title: Substituted benzimidazoles
Inventor: FRY DOUGLAS JAMES
IPC: C07D235/08
Filed: 1967-06-23
Abstract: 1,132,529. Polyhalobenzimidazoles. ILFORD Ltd. 23 June, 1967, No. 29189/67. Heading C2C. The invention comprises compounds of the general formula wherein R 1  is H or C 1-6  alkyl, R 2  is C 1-6  alkyl, and each of Z 1 , Z 2 , Z 3  and Z 4  is Br or Cl, at least one being Br and at least one being Cl. The compounds are prepared by brominating a chloro-substituted benzimidazole or chlorinating a bromo-substituted benzimidazole, the halosubstituted benzimidazole being of the general formula wherein X is Cl or Br, and n is 1-3, to introduce 4-n Br atoms when X is Cl and 4-n Cl atoms when X is Br. Trihalobenzimidazoles may be obtained as by-products in the halogenation of dihalobenzimidazoles.
Patent GB-1253890-A (GB)
Title: Rotary collator
Inventor: BLOWSKY FRANK CHARLES
IPC: B65H39/041
Filed: 1969-06-10
Abstract: 1,253,890. Collating apparatus. F. C. BLOWSKY. 10 June, 1969 [13 June, 1968], No. 29210/69. Heading B8R. A rotary collator comprises a drum 20 having a series of radially directed pockets 38, first feed means 31 for ejecting a sheet from a pocket, and second feed means 49, 50 for receiving and forwarding an ejected sheet. Drive wheels 42 operate the friction roller ejecting means 31 associated with each pocket, the drive wheels being rotated by engagement with a shoe 46 as the drum 20 rotates. A further shoe 47 is provided for rotating the drive wheels 42 to cause a preliminary and partial separation of the sheets from their stacks. A stripper device 48 frees each partially separated sheet from retaining devices 30 engaging the leading edge of the topmost sheet of each stack so that these sheets may be readily ejected upon engagement of wheels 42 with main shoe 46. A braking shoe 51 prevents continued rotation of separator rollers 31 upon grasping of an ejected sheet by feed rollers 49, 50. A driven belt 58 serves to guide ejected sheets into the nip of rollers 49, 50. Each pocket is provided with an adjustable back-stop 25 to accommodate sheets of different sizes. The ejected sheets are fed to a table 59 which is incrementally lowered and periodically angularly displaced to stagger the individual book units produced by the sheets deposited thereon. The collator is provided with missing sheet and multiple sheet detectors to stop the machine if a feeding error occurs. Either of the detectors may be disabled to prevent the machine being stopped in the event that a pocket is deliberately left empty or thicker than normal sheets are present in a pocket.
Patent GB-896390-A (GB)
Title: Alkylation of benzene
IPC: C07C4/18
Filed: 1958-09-15
Abstract: Benzene in the liquid phase is alkylated by reaction with an olefine in the presence of a montmorillonite clay which has been acidtreated, washed and upon which a metal oxide has been precipitated.  Polyalkyl benzenes are also dealkylated to monoalkyl benzenes by heating with the same catalyst.  Alkylation is preferably effected at 65 DEG C.-85 DEG C. using propylene to form cumene at a mole ratio of benzene to propylene of 2.5 : 1 to 7 : p  1.  Polyisopropylbenzenes formed are dealkylated to cumene and benzene by heating with the same catalyst at above 100 DEG C. Suitable oxides which may be precipitated on the clay catalyst are those of aluminium, magnesium or manganese.
Patent GB-1513974-A (GB)
Title: Benzoic acid derivatives
IPC: C07C233/12
Filed: 1976-07-15
Abstract: 1513974 Benzoic acid derivatives RECORDATI SA CHEMICAL & PHARMACEUTICAL CO 15 July 1976 [16 July 1975] 29571/76 Heading C2C Novel compounds of Formula I wherein Y is H (except when X is OH) or -CH 2 CH 2 N(C 2 H 5 ) 2  and X is OH (except when Y = H) NH 2  or anilino in which the phenyl ring is optionally substituted by Cl or ethoxy and salts are prepared by conventional methods. Pharmaceutical compositions in conventional forms and having antianaphylactic activity comprise an above novel compound and a carrier therefor.
Patent GB-572533-A (GB)
Title: Improvements in or relating to machine and like guns
IPC: F41A9/32
Filed: 1939-11-08
Abstract: 572,533. Automatic guns. DOBREMYSL, J. Nov. 8, 1939, No. 29620. [Class 92 (ii)] Relates to cartridge belt feed mechanism for guns having a tilting breech block and of the kind in which the belt is fed by a transverse slide operated by the moving breech mechanism, and consists in providing a rocking cam lever for sliding engagement with the upper surface of the breech block, the lever being connected by a crank arm with a reciprocating transmitting member for operating the transverse slide. In the form shown, a breech block 1, tilted in known manner for locking and unlocking by the gas-operated action-slide 2, is provided with a projection 26 for engaging the cam surface 17 of a rocking lever 15 which is fast with a crank arm 20 connected to a longitudinal slide 23. This slide, which is that described in Specification 572,532, can be mounted in alternative guides 24 on either side of the gun casing for right- or left-hand belt feed and is provided with alternative pins 25, 25<1> for engagement with a cam slot in the usual transverse belt feed slide. At the end of recoil, the rocking lever assumes the position shown in Fig. 4, its fore end 18 engaging a cam profile 14 on the breech block. On return, the rear part of the cam 14 engages the lever to restore it to its original position with the end 18 stopped against the gun casing. A spring 19 may be provided to assist return of the lever. The application to guns with barrel recoil is described in the Specification.
Patent GB-612601-A (GB)
Title: Improving the fastness of colourations on cellulose ester or ether textile material
IPC: D06P1/645
Filed: 1946-10-04
Abstract: Coloured cellulose ester or ether textile materials are impregnated with an aqueous alcoholic solution of a hydroxyalkyl aliphatic diamine and thereafter dried in order to improve the fastness of the colourations to the combustion products of coal gas.  The diamine, e.g. hydroxyethyl ethylenediamine, hydroxyethyl propylenediamine, hydroxypropyl propylenediamine or hydroxypropyl ethylenediamine, may be present in amount of 1 to 5 per cent by weight of the solution, and the solution may consist of aqueous alcohol containing 25 to 80 per cent by weight of ethyl alcohol.  In the example, a cellulose acetate fabric dyed with 1 - methylamino - 4 - isobutylamino - 2 - carboxyamide-anthraquinone is padded with a 2 per cent solution of hydroxyethyl ethylene-diamine in 50 per cent aqueous ethyl alcohol. Specification 571,677 is referred to.
Patent GB-520045-A (GB)
Title: Improvements in or relating to elastic fluid turbines
IPC: F02C7/18
Filed: 1938-10-13
Abstract: 520,045. Elastic-fluid turbines. TURBO ENGINEERING CORPORATION. Oct. 13, 1938, No. 29694. Convention date, Nov. 29, 1937. [Class 110 (iii)] An elastic-fluid turbine includes a rotor with axially-spaced intake and discharge parts and means for adding substantial heat quantities to the fluid in the passages, the intake imparting an axial component of flow whilst the discharge is shaped to assist rotation without any radialoutward component of flow. In a turbocompressor set, Fig. 1, the rotor shaft 8 carries compressor wheels 10, 12 with diffuser passages 18, 20 leading to the volute 24, part of the compressed air being by-passed at 48 to an annular passage 50 leading to cooling passages 52 formed between the vanes 36 of a turbine rotor 34 driven by exhaust gases through nozzles 38. The passages 52 are convergent away from the shaft and compress the air and then diverge on approaching the shaft to the discharge parts forming expansion nozzles so as to transform the heat absorbed from the exhaust gases largely into mechanical energy. The compressor and turbine casings 2, 30 are secured by. members 28 which prevent substantial transmission of heat, a shield 32 being also provided. In a modification (Fig. 5, not shown), the cooling air is taken from the compressor inlet and assists to cool the diffuser passages of the compressor, and the turbine rotor is directly mounted on the compressor impeller. In a further modification, Figs. 9, 10, the cooling passages 122 form continuations of the turbinebucket passages 118, the turbine nozzles 116 extending through only a portion of the periphery of the rotor and the openings from the annular passage 124 over the remaining periphery. In Fig. 17, a turbine has inward radial flow through nozzles 222 to rotor inlets 216 and passages 214 ending in impeller parts 218 with diffusers 226. The cooling air passages 228 have inlet and discharge parts 230, 232. U.S.A. Specifications 1,926,225 and 1,959,703 are referred to.
Patent GB-741531-A (GB)
Title: Fishing device
IPC: A01K85/14
Filed: 1953-10-28
Abstract: 741,531. Fishing lures. SCHNEIDER, E. Oct. 28, 1953, No. 29749/53. Class 48. In a fishing device consisting of a plate 1, a hook 4 and a weight 3 loosely or firmly connected to the plate, the common centre of gravity of the plate and weight is disposed behind the point of attachment of the fishing line 2 and also behind the point of action of the resultant upward water pressure on the plate when the plate is dragged through the water. The common centre of gravity is preferably disposed at a point more than one half of the length of the plate from the point of attachment of the line. The hook 4 is attached to the plate rim opposite to the point of attachment of the line and the weight is connected to the plate nearer to the hook than to the line. The line may be attached at a point 5 at the end of the diameter through the weight or at a point 9 offset from that diameter or the line attachment means may be guided in a slot 10 in the plate.
Patent GB-707787-A (GB)
Title: Improvements in or relating to electromagnetically operated coolant compressors for refrigerating machines
IPC: F04B35/04
Filed: 1951-12-20
Abstract: 707,787. Compressors for refrigerating plant. SOC. ANON. DES USINES CHAUSSON. Dec. 20, 1951 [Dec. 28, 1950], No. 29890/51. Class 8 (1). [Also in Group XXXV] An electro-magnetically operated refrigerant compressor enclosed in a sealed bell 2 comprises a pair of coaxial pistons 16, 17 reciprocable in cylinders 10, 11 and carried by vibrating reeds 5, 6, each reed having secured thereto a pair of permanent magnets 13, 14 which co-operate with electromagnets 7 supplied with alternating current whose frequency is higher than the natural frequency of the oscillating system, and spring-loaded movable elements associated with the reeds are operated according to the pressure of the coolant fluid so as to cause variations in the said natural frequency when the ambient temperature or the supply frequency changes and thereby maintain the compressor at its maximum efficiency. Each reed such as 5, Fig. 4, is engaged by a roller 78 carried by a resilient arm 77 pivoted on a pin 72. The point of contact of the roller on the reed, and hence the natural frequency of the latter, is controlled by a spring-loaded piston 85 slidable in a cylinder 86 and subjected to the pressure in the compression chamber 20 of the compressor through a conduit 97. Alternatively the natural frequency of the reed may be varied by a spring- loaded weight carried by a piston slidable in a cylinder secured to the reed along its longitudinal axis and subjected to the pressure in the compression chamber. In a further embodiment, Fig. 7, the cylinder controlling the natural frequency of the reed is in permanent communication with the interior of a box 110 having conduits 124, 125 leading respectively to the suction and delivery sides of the compressor. These conduits are controlled by valves 122, 123 carried by a rocking part 119 engaging an annular groove 115 of an insulated block 113 connected to a wire 132 which is in turn secured to an insulated bead 106, and tensioned by a spring 134. The wire 132 carries the supply current to the electromagnets of the compressor which current is stated to vary in response to changes in the supply frequency and the ambient temperature. Changes in current cause a variation in the length of the wire 132 and hence the position of the block 113 which causes a rocking of the part 119 thus varying the opening of one or other of the valves 122, 123 and thereby varying the pressure in the box 110.