baber/WOPTO huggingface dataset:
Patent GB-1218603-A (GB)
Title: Improvements in and relating to semiconductor devices
IPC: H01L21/82
Filed: 1968-01-15
Abstract: 1,218,603. Semi-conductor devices. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 15 Jan., 1968 [18 Jan., 1967], No. 2135/68. Heading H1K. A semi-conductor device such as an integrated circuit comprises a semi-conductor body having a portion 1 of one conductivity type and one or more islands 2 of the opposite type adjoining one surface of the body and forming electrically separating PN junctions 3 with the portion, at least one semi-conductor circuit element (e.g. transistor, diode, resistor, capacitor or multi-layer structure) incorporating a zone 5 of the one conductivity type being formed in at least one island and the breakdown voltage of the junction 3 being lower than the breakdown voltage between the zone 5 and the island. The breakdown voltage of the junction 3 is determined by a local, more highly doped, zone of the portion 1, preferably in the form of a separation channel 7, and a local, more highly doped, buried zone 8 of the island, the more highly doped zones being separated by, and defining part of, the PN junction 3 and the impurity concentration characteristic of the one conductivity type in the zone 7 having a maximum adjacent the part of the junction defined by the zones 7 and 8. In one method of making the device, arsenic is vapour-deposited on one surface of a silicon wafer 1 and diffused into the wafer in an oxygen atmosphere to form the highly doped zone 8 and an oxide layer (9, Figs. 3-7, not shown). A channel (10) enclosing the island 2 is etched in the oxide layer, the exposed silicon is etched to a depth of a few tenths of a micron, and boron is vapour-deposited to form a highly doped region (11) which is then diffused through the zone 8 to reach the portion 1. This is possible because boron diffuses about ten times as fast as arsenic. The oxide layer is then removed, an epitaxial layer 4 is grown on the surface, and a further oxide layer 12 is formed on the layer 4 and provided with a channel (13) immediately above the region (11). Boron is vapour deposited in the channel (13) and diffused into the layer 4 to meet the region (11) to form the highly doped separating channel 7, and simultaneously with this diffusion, or subsequently, boron is diffused through a suitable opening in the oxide layer to form the base zone 5 of a transistor. Phosphorus is then diffused-in to form the emitter zone 6 and collector contact zone 28 and finally aluminium is deposited to form contacts 18-20. The circuit is connected to voltage sources V 1 , V 2  in such a way that the voltage difference V 1  between the portion 1 and the base zone 5 is smaller than the difference between the breakdown voltages defined above. When the voltage V 2  is increased the junction 3 breaks down before the breakdown voltage between the base zone 5 and the collector zone 4 is reached so that damage to the transistor is prevented.
Patent GB-972128-A (GB)
Title: Pellets for supplying biologically active substances to ruminants and the manufacture of such pellets
Inventor: STEPHENSON DOUGLAS
IPC: A61J3/10
Filed: 1960-01-21
Abstract: 972,128. Pellets for ruminant animals. WELLCOME FOUNDATION Ltd. Jan. 12, 1961 [Jan. 21, 1960], No. 2304/60. Heading A5B. Pellets for administering biologically active substances such as hormones, trace elements, antibloat agents, antibiotics, anthelminties and systemic insecticides to ruminant animals are of the type described and claimed in Specification 866,924, i.e. the pellets have a density of at least 2.5 and a weight of at least 1 grm. so that, after administration, the pellet remains relatively permanently in the rumeno-reticular sac of the animal and the active substances are slowly released into the contents of the sac, but are prepared by compressing on to a core 1 containing the biologically active substance by the compression coating technique a high density layer 2 through which is a hole 3 which extends to the core. The hole may extend into the core and the core itself may be produced by compression. The high density layer is largely iron powder and a metallic oxide such as cupric oxide may be present. Conventional diluents, binders and lubricants may also be present.
Patent GB-446246-A (GB)
Title: A method of manufacturing alloys for permanent magnets
IPC: C21D8/12
Filed: 1934-01-23
Abstract: Permanent magnet alloys of the iron-nickel-aluminium type e.g those containing 3-20 per cent of aluminium 7-40 of nickel and the rest iron, are heated, after casting and cooling, to a temperature between 1100 DEG  C. and the melting point and then quenched.  In an example, an alloy containing 24,5 per cent of nickel, 11,3 of aluminium and the rest iron is cast in sand moulds, cooled, heated to 1200 DEG  C. and then quenched.
Patent GB-660468-A (GB)
Title: Improvements relating to the production of rolled steel beams and like sections
IPC: E04C3/04
Filed: 1949-01-27
Abstract: 660,468. Altering physical structure NIVIAN, A. C. Jan. 27, 1950 [Jan. 27, 1949], No. 2337/49. Drawings to Specification. Class 83 (iv). To increase loading capacity a steel beam is given a predetermined curvature, heated to remove strain, allowed to cool and straightened. The beam may be curved in the final rolling during making or by re-rolling or pressing and during this re-rolling the compression flange may be marked for identification in a stock pile. The Specification explains how the curvature, necessary to produce a safe prestrain in the finished beam, can be determined from a knowledge of the physical data of the steel in question.
Patent GB-374805-A (GB)
Title: Improvements in or relating to cooling fans for vehicles driven by internal combustion engines
IPC: F01P5/02
Filed: 1932-01-27
Abstract: 374,805. Rotary fans. SULZER FRERES SOC. ANON., Winterthur, Switzerland. Jan. 27, 1932, No. 2452. Convention date, March 27, 1931. [Class 110 (i).] A cooling fan for a vehicle driven bv an internal-combustion engine has a rotor 1 with blades 2 mounted in the curved. conduit 12 adjacent the cooler 5 and driven by the motor 4. The bearing 6 is supported by members 7 mounted on the inner surface of the conduit 12, The members 7 are curved as shown in Fig. 2, so that as the impeller rotates the leading edge of each blade 2 is at an angle to each support 7 ; this ensures the gradual passage of each blade and a consequent diminution of noise. The numbers of blades 2 and supports 7 have no common factor so that the simultaneous passage of a number of blades 2 over supports is avoided. The supports 7 may be streamlined. A longitudinal guide wall 13 is arranged in the conduit 12 and may be connected to the supports 7, or the supports 7 may be constructed to constitute guide walls extending towards the bend.
Patent GB-325082-A (GB)
Title: Improvements in elevators
IPC: B66B9/02
Filed: 1929-01-24
Abstract: 325,082. Kreutzkamp, L. Jan. 24, 1929. Screw-and-nut lifts.-A lift actuated by screw- and-nut mechanism has means for disconnecting the screw or screws from the car or platform at the upper and lower limits of travel. The car 13 has a central sleeve 20 with an internal thread 21<a> at its lower end engaging a screwed spindle 14 rotated by worm gearing 16. The upper and lower ends 15 of the spindle are threadless so that at the upper and lower limits of travel of the car the sleeve 20 is disengaged from the spindle. A spring 19 on the lower end of the spindle is strong enough to re-engage the sleeve with the spindle to start the car on its upward travel. A modification adapted for a footway has a screw secured to a platform in a well and bevel gearing at the bottom of the well for actuating the screw. Two screws may be arranged at the sides of the well or in diagonal corners. Screws 32, Fig. 6, are arranged at the sides of the well and have supporting brackets 33 and guide portions 39 at their upper ends engaging guide sleeves 40 on the car 50. Internally threaded sleeves 38 are resiliently mounted on the bottom of the car and engage the screws 32 except at the limits of travel when they reach the threadless ends 34 of the screws. The sleeves 38, 40 are slotted so as to pass over the necks of the brackets 33.
Patent GB-174928-A (GB)
Title: Improvements in kitchen ranges with water as a heat storing substance
IPC: F24C15/34
Filed: 1922-01-27
Abstract: 174,928. Saxegaard, A. Feb. 3, 1921, [Convention date]. Steam cooking-apparatus.-In a cooking-range of the type in which the cooking vessels are heated by means of an electrically-heated water bath, a horizontal partition D divides the water tank into upper and lower chambers B, C which communicate with one another at a level above the level of the partition. The reservoir C communicates with the chamber B, from which water for domestic use is drawn, by means of a tube E projecting into a hood F. Heating-elements O are situated in air-tight pockets P in the reservoir C, and the steam generated escapes by way of the tube E, hood F, and tube G to the condenser H. the condensate returning to the reservoir, so that no steam enters the chamber B. The cooking space A is separated from the chamber B by a partition K and is fitted with a diagonal partition L at one corner communicating with the chamber B by way of a hole M at one end of the partition K, so that the chamber may be filled with water by removing the cover W of the cooking space. The air space T is arranged for warming dishes or food. An oven U independently heated by other electrical means is provided.
Patent GB-978235-A (GB)
Title: Improvements in or relating to eccentric or crank presses
IPC: B30B15/12
Filed: 1962-01-23
Abstract: 978,235. Clutch control. E. SCHWARZ. Jan. 23, 1962 [Feb. 15, 1961], No. 2511/62. Heading F2L. In an eccentric or crank press of the kind having a segmental key clutch comprising a catch arm 18 pivotally mounted on an eccentric -shaft 19 and loaded into an engaged position by a spring 20, two separately operable switch bolts 16, 16<SP>1</SP> are arranged so that they may engage the arm 18, thereby causing clutch disengagement, the position of the bolt 16<SP>1</SP> being adjustable in the direction of rotation of the shaft 19. The switch bolts 16, 16<SP>1</SP> are connected by pivoted levers 13, 13<SP>1</SP> with piston rods 12 operating in pivotally mounted compressed air cylinders 10, 10<SP>1</SP>. Alternatively, the control means may be magnetic, or electropneumatic. The bolt 16<SP>1</SP> and its associated control mechanism are mounted on a plate 21 having an arcuate slot 22 through which securing screws 23 may be passed to co-operate with screw-threaded bores 24 provided in the machine frame A. On a press having twohanded engagement, if the operator does not press the two operating levers down with both hands for sufficiently long, the second switch bolt operates to disengage the clutch and thereby terminate the descent of the ram. The second switch bolt 16<SP>1</SP> may be controlled in dependence upon a tool feed system such as the feed of a slide.
Patent GB-1400141-A (GB)
Title: Liquid crystal display device
IPC: G02F1/1341
Filed: 1974-01-18
Abstract: 1400141 Modulating light AMERICAN MICROSYSTEMS Inc 18 Jan 1974 [6 March 1973] 02562/74 Heading H4F In a liquid crystal display cell a portion of a peripheral glass or plastics seal 18 between spaced glass plates 12, 14 is provided with a filling aperture (22), and an elongate barrier 24 in contact with both plates along its length extends generally parallel to this seal portion, leaving terminal spaces 26, whereby after the cell is filled with liquid crystal material the aperture is sealed with a plug 28 of hardenable material which abuts the barrier 24 and assumes a T-shape. In such a construction, an increase in temperature does not tend to dislodge the plug, and diffusion of harmful matter from the plug into the liquid crystal material in the main part of the cell is small. As particularly described, the material of plug 28 may be a silicone compound, and the plates 12, 14 bear tin oxide electrodes, at least one being shaped, e.g. segmented.
Patent GB-1363392-A (GB)
Title: Electrical barrier circuit
IPC: H02H9/00
Filed: 1973-01-18
Abstract: 1363392 Protective circuits HONEYWELL GmbH 18 Jan 1973 [20 Jan 1972] 2579/73 Heading H2H A barrier circuit comprises a voltage limiting network N connected in series with a Zener barrier network Z, the network N including two Zener diodes D3, D4 and a resistor R3, each of the Zener diodes D3, D4 having a lower Zener voltage than that of the Zener diodes D1, D2 of the network Z. The circuit enables apparatus in a safe area and connected to a terminal 3 to be connected to apparatus in a hazardous area. The apparatus in the hazardous area is connected to a terminal 11. The Zener diodes D1, D2 and a resistor R2 limit the maximum current flowing via terminals 1, 11 whilst the voltage at terminal 11 is limited by the Zener diodes D3, D4. The components of the networks N, Z are encapsulated in a block of synthetic resin.
Patent GB-1470617-A (GB)
Title: Polyester resin moulding or coating compositions
IPC: C08K5/053
Filed: 1975-01-21
Abstract: 1470617 Polyester resin compositions; colour stabilizer HOECHST AG 21 Jan 1975 [24 Jan 1974] 2647/75 Heading C3P A polyester resin moulding or coating composition comprises (a) an ethylenically unsaturated polyester, (b) an ethylenically unsaturated monomer copolymerizable therewith, (c) a polymerization inhibitor, (d) a hydroperoxide polymerization inhibitor, (e) a cobalt compound as accelerator and (f) a colour stabilizer comprising but-1-ene-3,4,diol. Polymerization promoters and auxiliaries and/or additives may also be present. In the examples polyester resins prepared from various mixtures of maleic anhydride, phthalic anhydride, adipic acid, fumaric acid, tetrahydrophthalic anhydride, 1,2-propanediol, diethylene glycol and pentaerythritol triallyl ether, are copolymerized with styrene using as additives acetoacetic acid, ethyl ester, cobalt octoate as well as the but-1-ene-3,4 diol. The but-1-ene-3,4 diol is found to reduce the gelling time of the resin composition.
Patent GB-1211137-A (GB)
Title: Air conditioning convection unit and in particular a high pressure induction unit
IPC: F24F1/01
Filed: 1968-01-17
Abstract: 1,211,137. Air conditioning. HEINRICH NICKEL G.m.b.H. 17 Jan., 1968 [17 Jan., 1967], No. 2648/68. Heading F4V. In an air conditioning unit in which the air is heated or cooled, and also filtered, and having an induction nozzle 11 for primary air and inlets 19, 24 for re-circulated air there are provided shutters 13 and 14, 17 pivoted at 23, 21 respectively which open and close the inlets and also isolate the heat exchangers from an induction shaft 12. Primary air flows from an inlet 9 to a chamber 10 and thence through nozzles 11 and to an outlet 26. Heat exchanger 7 heats air entering through inlet 19 and exchanger 8 cools air entering through inlet 24; a wall 29 is placed in front of inlet 24. Filters 6, 20 are provided in the inlets. A passage 22 and space 27 and collection channel 28 facilitate the removal or collection of dirt and condensed water. The shutters can be moved from the positions shown in full lines to the dotted line positions or to intermediate positions. With the shutters in the full-line positions shown, air passes through inlet 19 and into a space 18 thereby avoiding both heat exchangers. If less cooling is required an exchanger 8 of less height is fitted and the remainder of opening 24 is covered by sheet metal.
Patent GB-546700-A (GB)
Title: Improved type cleaner
IPC: B41J29/17
Filed: 1941-02-28
Abstract: 546,700. Brushes. WALLER, H. J., and HAYES, L. S. FFITCH-. Feb. 28, 1941, No. 2706. [Class 19] A device for cleaning type comprises a brush 4 removably fitted into a socket in the lower end of a plunger 3, which is adapted to slide and rotate in a cylinder 1, a screw 6 travelling in a spiral or zig-zag slot 2. A spiral spring is housed between the end of the plunger and the top of the cylinder.
Patent GB-1529927-A (GB)
Title: Charge coupled device systems
IPC: H04N5/372
Filed: 1976-01-23
Abstract: 1529927 Analogue to digital conversion; television camera RCA CORPORATION 23 Jan 1976 [5 Feb 1975] 02716/76 Headings H3H and H4F A charge coupled device analogue to digital converter comprises a plurality of input register stages 14-1#16-3, a transfer gate 12 and a plurality of conversion registers 22 1 #28 each having a plurality of cells formed by their overlap with transfer columns 38-1#40-3 and each cell having a capacity less than that of an input register stage, these forming the output register. In operation charge on input stages 14-2, 16-2 is flowed onto the output register, columns 38-1, 38-3, 40-1, 40-3 acting as barriers to prevent spread along the conversion registers, filling a number of the plurality of available conversion register cells. To read out the charges are phased towards an output of the registers where a threshold device detecting cells more than ¢ full provides a digital output. The device may be used as memory with digital or analogue feedback (Fig. 5, not shown) or as part of a CCD imager wherein the input register is replaced by a light array.
Patent GB-489655-A (GB)
Title: Improvements in photographic papers having stripping substrata
IPC: G03C1/805
Filed: 1937-01-30
Abstract: 489,655. Stripping films. I. G. FARBENINDUSTRIE AKT.-GES. Jan. 30,1937, No. 2802. Convention date, Jan. 30, 1936. [Class 98 (ii)] In the process of transferring an emulsion layer from a paper support to a rigid support, the emulsion is connected with the paper support by a layer comprising a natural or artificial resin insoluble in water but soluble in weak acids or alkalies or neutral salt solutions and during or after the developing process, the paper is removed by an alkaline, acid, or salt solution. A lyophil colloid may be mixed with the resin. Suitable substances for the layer are shellac, colophony, sulphonated rubber, polymerized vinyl compounds containing a carboxyl group, phenol-aldehyde condensation products, and natural or artificial resins which have been treated to confer solubility in dilute alkali. Suitable layers are those described in Specification 461,559. The bodies are dissolved in alcohol to which a wetting agent such as saponin or alborite or the reaction product from oleyl alcohol and ethylene oxide is added, and poured on a paper support. Examples are given of layers containing colophony, the resin from phenoxyacetic acid and formaldehyde, the polymerization product from polyacrylic acid nitrile and polyacrylic acid, and shellac. Gelatin or dextrin may be added to the layers. The Specification as open to inspection under Sect. 91 comprises also the use of other materials of high molecular weight or highly polymeric constitution such as casein, sulphonated rubber, polyvinyl compounds containing carboxyl groups, diphenyl guanidine, and sulphanilic acid. This subject-matter does not appear in the Specification as accepted.
Patent GB-883866-A (GB)
Title: Force to proportional movement transducer
Inventor: NYE DUDLEY DODGE
IPC: G01L1/08
Filed: 1959-01-26
Abstract: 883,866. Current measurement. ROBERTSHAW-FULTON CONTROLS CO. Jan. 26, 1959 [June 3, 1958], No. 2808/59. Class 37. [Also in Group XXXVIII] In a system for indicating the magnitude of the force due to a current I flowing through a coil 16 in the field of magnet 20, the force deflects beam 14 and varies the pressure in chamber 34 of pneumatic sensing device 10. Changes in pressure in chamber 34 result in changes in resistance of resistor 38 connected in the field circuit of a shaded pole induction motor whose direction of rotation is a function of the relative values of resistors 38 and 51. Mechanical linkage 54 and 56 and spring 58 are connected to the beam and motor shaft in such a way as to rebalance the-beam, in which condition the rotation of shaft 44 and pointer 52 are proportional to the magnitude of the applied current. Alternatively the system may be used for the measurement of forces representative of temperature, fluid flow, or pressure by applying the force to the beam as at F and dispensing with coil and magnet assembly.
Patent GB-344608-A (GB)
Title: Improvements in control apparatus for electric lifts
IPC: B66B1/52
Filed: 1930-01-28
Abstract: 344,608. Lifts. ETCHELLS CONGDON & MUIR, Ltd. and MUIR, F., Mill Street, Ancoats, Manchester. Jan. 28, 1930, No. 2886. [Class 78 (ii).] Electric. plant.-A lift cage is brought to a stop level with any desired floor by control apparatus comprising drums A, A<1> insulated from each other by a block C and traversed along a stationary screw B in accordance with the travel of the cage, adjustable contact rollers G, G<1> disposed around the drums and connecting them with the main reversing contactors M, N and a number of contact rollers K<1> carried by brackets K which engage successively landing contact strips F on the block C and connect them to a relay unit P. The contacts G, G<1> are carried by brackets g, g<1> and are always in contact with the drums. Each contact roller is secured by a screw and nut in a slot in order that its position can be adjusted. The brackets g, g<1>, K are adjustable on the uprights d. One of the strips F is connected to the drum A, and the other to the drum A<1>. When the attendant returns the cage switch S to neutral position, the circuit for the relay unit P controlling a diverting resistance R is opened, and this resistance is connected across the armature O of the motor thereby reducing the speed. If the cage overruns the floor, the contact roller will make contact with the contact strip of the drum for the opposite direction of travel, and the reversing contactor will be energized to move the cage in the reverse direction until the contact roller breaks circuit and is between the contact strips.
Patent GB-854315-A (GB)
Title: Dried fat-containing milk products and process for producing the same
IPC: A23C1/10
Filed: 1957-01-28
Abstract: A dried, fat-containing milk product in expanded, cellular form and readily dispersible in water at 38 DEG F. is made by vacuum concentrating a fat-containing milk, e.g. pasteurized whole milk, skim milk "filled" with vegetable fat or oil, or a supplemented whole milk for infants, at a temperature at which the milk proteins remain unaltered, homogenizing the concentrate and incorporating a gas, e.g. nitrogen, therein to obtain a concentrate in which the gas is dissolved or uniformly dispersed and in which there are no fat particles above 2 microns in size, and drying and expanding the homogenized, gas-containing concentrate at a temperature at which the milk proteins remain unaltered.  The dried product is, if necessary, broken up to a coarse powder.