baber/WOPTO huggingface dataset:
Patent GB-1475109-A (GB)
Title: Production of aliphatic monoesters of phosphoric acid
IPC: C07F9/11
Filed: 1974-10-09
Abstract: 1475109 Phosphoric acid monoesters BASF AG 9 Oct 1974 [1 Oct 1973] 43702/74 Heading C2P Monoesters of formula (HO) 2 P(O)OR where R is a C 6-30  aliphatic radical are prepared by reacting an alcohol R-OH with 1À0 to 1À1 mole of POCl 3  per mole of R-OH and hydrolysing the reaction mixture with water, the reaction and hydrolysis being carried out in the presence of a cycloalkane and/or an alkane as solvent.
Patent GB-1535346-A (GB)
Title: Hinge pins
IPC: B21K1/46
Filed: 1976-10-22
Abstract: 1535346 Hinge pins E D SCHARWACHTER KG 22 Oct 1976 [22 Oct 1975] 43971/76 Addition to 1423671 Heading E2F In an improvement in a hinge pin and process for making a hinge pin claimed in Specification 1423671, the or each axially extending groove 2 of the pin 1 is closed at the end 8 remote from the head 4 of the pin by upsetting the end 8 of the pin, but without increasing the diameter of the shank of the pin. A pressure lubricating nipple 9 is disposed on the hinge pin head 4 and communicates with the grooves 2.
Patent GB-1206246-A (GB)
Title: Rotary regenerative heat exchanger
Inventor: JONES FREDERICK WILLIAM
IPC: F28D19/04
Filed: 1968-09-17
Abstract: 1,206,246. Thermal regenerators. LEYLAND GAS TURBINES Ltd. 20 Aug., 1969 [17 Sept., 1968], No. 44119/68. Heading F4K. In a rotary thermal regulator comprising a ceramic disc-like matrix 1 coaxially surrounded by a metal driving annulus 4 having a ring of teeth 9 meshing with three circumferentially spaced pinions 12 (13, Fig. 3, 14, Fig. 4), mounted respectively on shafts 15 (16, 17), each shaft carries a freely rotatable roller 18 (19, 20), which engages a circumferentially extending rib 10 provided on the outer peripheral face of the driving annulus 4. This arrangement serves (a) to accommodate axial loading on the rotor for example due to resilient seals 26, 27, 28 and (b) to restrain the rotor from tipping. The matrix 1 is drivingly engaged with the annulus 4 by means of a radially resilient drive transmitting member 5, e.g. a spirally wound strip or a corrugated spring strip. The annulus 4 is held against axial movement relative to the matrix 1 by means of a pin 6 engaged between a flange 7 and a clamping plate 8. Only one of the shafts viz. shaft 15 is a drive shaft, the other shafts (16, 17) being idler shafts. One of these idler shafts (17, Fig. 4) is mounted in bearings on a swing or in (24) connected to a torsion bar (25); this permits the rotor to be centralized about a central bolt 2. In an alternative arrangement (not shown) the rib is replaced by a circumferential groove and the rollers are convexly shaped to fit into the groove.
Patent GB-985315-A (GB)
Title: Improvements in or relating to variable-impedance electric circuits
Inventor: MCPHERSON JOHN WEMYSS
IPC: H03H11/54
Filed: 1960-12-22
Abstract: 985,315. Semi-conductor assembly; circuit assemblies. GENERAL ELECTRIC CO. Ltd. Dec. 20, 1961 [Dec. 22, 1960], No. 44148/60. Headings H1K and H1R. A resistive part of a circuit, the impedance between the input and output terminals of which may be controlled by the bias applied to the base electrode of a transistor forming part of the circuit, is constituted by a thermocouple, the cooling junction of which is in thermal contact with the transistor. A typical circuit is shown comprising transistors 5 and 7 mounted on a common heat sink cooled by thermocouple 9. It is stated that the maximum currents in the two transistors do not occur simultaneously but that the maximum power dissipation in each coincides with a high value of current through the thermocouple so that cooling is effective when most needed. The advantage of the circuit over one in which a resistor replaces the thermocouple is that it may be used at higher ambient temperatures, or that at the same ambient it permits a greater maximum power dissipation in each transistor. The resistor in the variable impedance circuits described in Specifications 946,212 and 946,250 may similarly be replaced by thermocouples cooling the transistor heat sink.
Patent GB-946396-A (GB)
Title: Rotary regenerative heat exchangers
IPC: F28D19/04
Filed: 1962-11-22
Abstract: 946,396. Thermal regenerators. GENERAL MOTORS CORPORATION. Nov. 22, 1962 [Dec. 4, 1961], No. 44216/62. Heading F4K. A rotary thermal regenerator comprises a disc or drum-type matrix containing packs of heat transfer plates some of which have their opposite edges extended beyond the remaining plates and so act as labyrinth seals in conjunction with sealing members (not shown) close the gas entry and exit faces of the matrix, one at least of the extended edges of each seal plate having fixed thereto a metal strip capable of resisting thermal distortion of the seal plate, as shown, the plate packs are located between bars 38 of the rotor structure. The sealing plates 50 each comprise two individual plates 54, 56 unconnected, except at one edge where they are joined to each other, and to a relatively thick bar 60 by spot-welding. The bar strengthens the plate against the tendency to distort under thermal stress. Slots 64, 66, staggered as shown, also serve to minimize distortion of the plate. In an alternative construction (Fig. 6, not shown), the sealing plates each comprise a corrugated plate spotwelded at one edge to a bar similar to the bar 60. Fig. 2 shows how the sealing plates project beyond the remaining plate elements which, as shown in Fig. 5, may each be formed of a corrugated plate 68 spot-welded to a slotted flat plate 70, a number of these elements being stacked between each pair of sealing plates 50. The plates 50 may be so disposed in the assembly that the bars 60 are at the same corresponding extended edge only in alternate plates.
Patent GB-1350798-A (GB)
Title: Heat responsive switching devices
IPC: H01H61/08
Filed: 1971-09-22
Abstract: 1350798 Thermal relays REGIE NATIONALE DES USINES RENAULT and AUTOMOBILES PEUGEOT 22 Sept 1971 [23 Sept 1970] 44290/71 Heading H1N A time delay switch D for use in a windscreen wiper/washer installation of a motor car comprises a thermally expansible wire 1 which normally holds two contacts 3, 4 closed so that when a supply is applied, e.g. by push button 30, the wire is heated by current passing through a low value resistor 12 and quickly expands to separate contacts 3, 4, the contacts being held open by the current continuing to flow through a high value resistor 2; movement of contact 3 is transferred by an insulating link 6 to snap acting contacts 7-11. When the push button 30 is closed a windscreen washer pump 29 is immediately energized and after a short delay contact 9 changes over to energize the wiper motor 15; when the button 30 is released the wire 1 cools slowly and after a somewhat longer delay switches off the wiper motor which however continues to run until a self parking switch 18 changes over.
Patent GB-1180818-A (GB)
Title: A Multi-Element Column for USe in Constructing Multi-Storey Dwelling Houses and Industrial Buildings.
IPC: E04C3/30
Filed: 1967-09-29
Abstract: 1,180,818. Building columns. ACIERBETON S.A. 29 Sept., 1967 [13 Oct., 1966], No. 44524/67. Heading E1W. A column for a multi-storey building is built up from storeyhigh sections, each of which comprises a metal core 6, 9 or 11 provided with a coating 2 which prevents adhesion with a reinforced outer casing 7, 10 or 12. Each column section may be preformed or the concrete casing may be cast in situ. Compressible packing material 18 is arranged between the column sections and the load on each section is transmitted only to the metal core of the section below. Each concrete outer casing supports a floor 13, 14 or 15, 16. The column rests on a metal base plate 5. Co-operating projections and recesses may be provided on the ends of the column sections.
Patent GB-1299020-A (GB)
Title: Improvements in or relating to pulse wave train generators
Inventor: PERNA ALEXANDER JIRI
IPC: H03K3/84
Filed: 1970-09-19
Abstract: 1299020 Pseudo-random sequences MARCONI INSTRUMENTS Ltd 9 Aug 1971 [19 Sept 1970] 44722/70 Heading G4D A pseudo random pulse wave generator comprises a shift register composed of a chain of bi-stables 1-5 and a clock pulse source 6; a feedback loop including an EXCL-OR gate 7 providing feedback from two separated points in the chain to an earlier point in the chain whereby the register produces a circulating pseudo-random pulse wave; and a switching circuit 9 operated at an integral multiple of the clock pulse frequency and connected to feed in succession to an output terminal 8 signals taken from points on the chain separated at least by one bi-stable. This arrangement increases the maximum frequency at which the generator is usable. In Fig. 2 the switching circuit 9 operates at twice the clock frequency; it may operate at four times the frequency and select outputs from four points on the chain (Fig. 3, not shown). Any number of bi-stables may be used. Application of the generator to testing a high frequency communication link is described.
Patent GB-1035270-A (GB)
Title: Improvements in or relating to a safety device for a constant-level flow regulator
IPC: F24C5/16
Filed: 1964-11-03
Abstract: 1,035,270. Valves. ETABLISSEMENTS HENRY POTEZ. Nov. 3, 1964 [Nov. 5, 1963], No. 44786/64. Heading F2V. The constant level float chamber of a liquid fuel heating apparatus is provided with a safety valve which cuts off the supply thereto when the main control valve ceases to function or when the float develops a leak. In the embodiment of Fig. 1 the main and safety valves 23, 18 are coaxial and concentric and co-operate with seats 11, 10 respectively, both being biased to the open position by springs 25, 21 respectively. In operation, the end 45 of a lever 43, pivoted at 29, is raised thereby allowing both valves to open. The float 6 rises and via a lever 28, also pivoted at 29, and blade spring 33 acting on spindle 16 closes the main valve. At the same time a peg 35 on lever 28 causes a lever 36, 41 to pivot at 37 and engage a notch 47 in lever 43 to hold the latter in a raised position, subsequent rise and fall of the float between predetermined limits serving only to actuate the main valve. Should the main valve fail to seat properly, continued rise of the float, via a screw 38, causes the lever 36 to rotate and release lever 43 which falls, under the action of a spring 48, to close both valves. If the float punctures, the lever 36 is rotated by peg 35 to release lever 43 to similarly close the valves. In the modified valve arrangement of Fig. 6 (not shown), the resilient ring 24<SP>1</SP> serves as the safety closure member. In Figs. 8 and 9 (not shown), the seat for the main valve is rendered more resilient than the remainder of the seat body to cause it to grip the main closure member as it enters.
Patent GB-1323922-A (GB)
Title: Dental nerve broach
IPC: A61C3/02
Filed: 1970-09-21
Abstract: 1323922 Drilling teeth MICRO MEGA SA 21 Sept 1970 [13 Oct 1969] 44938/70 Heading A5R A tool for boring a radicular canal in a tooth is adapted to cut a cylindrical canal when rotated in a handpiece adapted to impart an oscillatory movement having an amplitude of less than 90‹. As shown, five cutting edges are equally spaced around an elongate central portion projecting outwardly therefrom.
Patent GB-1057956-A (GB)
Title: Improvements in or relating to magnetostrictive delay line arrangemens
IPC: H03H9/36
Filed: 1963-11-15
Abstract: 1,057,956. Magnetostrictive delay lines- TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. Nov. 15, 1963 [Nov. 17, 1962], No. 45123/63. Heading H3U. In a magnetostrictive delay line comprising two transducers 4, 7 spaced along a wavepropagation member 1 which is supported at its ends in terminations 2, 3 designed to prevent reflections, the wave-propagation member is of material having different physical properties at different parts of its length, the parts in the neighbourhood of the transducers being of a magnetostrictive material having a high electromechanical coupling factor and the part between said magnetostrictive parts being of a material having a low propagation attenuation. The wave-propagation member 1 may be made of hard-drawn nickel wire having a low propagation attenuation which is annealed in the region of the transducers to produce a large electromechanical coupling factor. The member may consist of a large number of single parallel thin wires which are annealed in the neighbourhoods of the transducers. This results in an insulating oxide coating being produced on each wire so that eddy current losses are reduced. The magnetostrictive regions of the member 1 are preferably subjected to a steady premagnetizing magnetic field, applied for example by permanent magnets.
Patent GB-1277049-A (GB)
Title: A method for preventing the formation of layers of solutions of differing concentration in absorption refrigerating plant
Inventor: STIERLIN HANS
IPC: F25B15/10
Filed: 1969-09-16
Abstract: 1277049 Refrigerating H STIERLIN 16 Sept 1969 [4 Oct 1968] 45476/69 Heading F4H In an absorption refrigerating system using an inert gas substantially similar to that described in Specification 1,232,708 the formation of layers of different concentrations of solutions in the reservoir 13 is prevented by directing the refrigerant-rich condensate from the absorber 15 directly to the generator via a conduit 217 to bypass the reservoir and the reservoir only communicates with the auxiliary gas system at the absorber 15 via pipe 202 or pipe 204 where the auxiliary gas is refrigerant-poor.
Patent GB-1007989-A (GB)
Title: Method of permanently waving human and animal hair
Filed: 1962-11-30
Abstract: Human and animal hair is permanently waved by treating it with an aqueous solution containing a hydroxythiophenol, e.g. 2,5- or 2,6-dihydroxythiophenol or 2,4,6-trihydroxythiophenol or a mixture thereof.  The hair may be slightly moistened with the solution of the hydroxythiophenol to which thickeners, washing agents, wetting agents, perfumes, emulsifiers, greasing agents and/or dyes may be added, wound on to rollers and thoroughly wetted with the waving solution.  After the solution has acted on the hair for 20-40 minutes at a temperature slightly above room temperature, e.g. 45 DEG -65 DEG C., it may be rinsed out with water and the hair unwound.  The hair may be set in the absence of chemical oxidants although chemical oxidants, e.g. peroxides and alkali metal bromates, may be applied. The pH of the solution may be adjusted to 2-10 by the addition of alkali metal hydroxides or carbonates, ammonium bicarbonate, ammonia, monoethanolamine or triethanolamine.  Discolouration of the solutions by the action of atmospheric oxygen may be avoided by the addition thereto of antioxidants, e.g. formaldehyde, oxalic acid, thiourea, 2-mercapto-6-nitrobenzthiazole, 6-thiopurine, thiomalic acid, thiosalicylic acid, diaminomethane disulphinic acid and cysteine. effect a transfer of loops, the emptied needle then travels along a channel 18 and is acted on by a swinging picker finger 32 and follows a non-knitting path B between cams 21 and 22.  In the front bed marginal needles N1 from which loops have been removed follow paths A1 and B1 as described above. The remaining active needles are operated by cams 6, 8 and 11 or 7, 9 and 13 to produce a fresh course of stitches, no knitting having taken place at the leading knitting section of the double locks.  Similarly when the locks move from left to right (Fig. 3) the marginal needles have their loops transferred when moving along the path C or C1 and are taken out of action along the path B or B1.  To produce a 1 x 1 or 2 x 2 rib the shaded cams 25 and 33 in the front lock are moved to a "half way in" position to operate on long butted needles Nh, cam 25 moving these needles to a position where they transfer their loops to the needles of the rear bed and cam 33 retracting them, after transfer, to a non-knitting position.
Patent GB-1452641-A (GB)
Title: Manufacture of sintered alumina abrasives
IPC: C09K3/14
Filed: 1974-10-22
Abstract: 1452641 Abrasive grains NORTON CO 22 Oct 1974 [24 Oct 1973] 45566/74 Heading C4V An abrasive material in a sintered formed-tosize particles for use in bonded grinding wheels, for rough grinding application such as snag grinding of stainless steel, have individual abrasive particles having a composition including alumina, ceria and zirconia in compositional amounts defined by the boundary AEBC in the given ternary composition diagram, the alumina, zirconia and ceria amounting to at least 95% by weight of the composition. In addition to the alumina, zirconia and ceria, oxides of silicon, titanium, iron, calcium, magnesium, manganese, vanadium, chromium, nickel and cobalt may be present. The average crystal size of the material is preferably not above 5 microns. The material may be obtained by forming into abrasive grit particles a finely divided powdered mixture having a composition as above and fixing the particles at sintering temperatures, such as 1350 to 1600 C.
Patent GB-1534840-A (GB)
Title: Expansible dowel
IPC: F16B13/12
Filed: 1977-11-04
Abstract: 1534840 Rivets; screw sockets; anchor bolts HILTI AG 4 Nov 1977 [17 Dec 1976] 45899/77 Heading F2H An expansible dowel comprising a cylindrical sleeve with at least one longitudinal slot 12, 22, 32, and an expander body 15, 25, 35 movable longitudinally in the slot to radially expand the sleeve, has the slot formed at least partly as a recess 13, 23, 33 which narrows towards the front end of the dowel, and the flanks 16, 26, 36 of the expander body which engage the sides of the recess converge towards the front end with the same taper angle as the recess sides. The rear end of the dowel may have an external thread 11, an internal thread 21, or a head flange 31. The sides of the recess also converge towards the longitudinal axis 14 of the dowel. The expander body 15 has a tang 18 projecting into the sleeve by which it may be driven along the recess, a weak point 19 failing at a predetermined load. In Fig. 2 the expander body 25 comprises two wedges 27 connected by a stirrup 28.
Patent GB-1487145-A (GB)
Title: Dictate station apparatus
IPC: H04M11/10
Filed: 1975-11-06
Abstract: 1487145 Centralized dictation systems; sets LANIER BUSINESS PRODUCTS Inc 6 Nov 1975 [6 Nov 1974] 45998/75 Headings H4K and H4J A dictation station 10 may be connected to any one of a plurality of dictation receiving circuits by operation of an appropriate switch SW1 -SW6 which interconnects the control circuit 21 of the station to the selected dictation circuit. A switch when actuated, e.g. by depression of a button 1-6, remains so until another switch is actuated, there being held/disconnect arrangement 30, 31, 35 which ensures this. The station is prepared for dictation by placing a control device 12, 13 in a READY state, e.g. by lifting handset 13. At the end of a dictation the control device is returned to its IDLE state, thereby releasing via a disconnect device 27, 39, 40 any actuated switch. The free/busy state of a dictation receiving circuit may be indicated by a lamp 20.
Patent GB-1020262-A (GB)
Title: Mixing apparatus for multiple component synthetic resins
IPC: B01F7/02
Filed: 1962-12-07
Abstract: 1,020,262. Continuous-discharge mixing-apparatus. SCHERING A.G., and TORKRET G.m.b.H. Dec. 7, 1962 [Dec. 8, 1961], No.46359/62. Heading B1C. in apparatus for the continuous mixing under pressure of multiple component synthetic resins, so as to prevent build-up of mixed resin around the shaft bearings one resin component continuously traverses a preliminary chamber before entering the mixing chamber. The resin component and hardener enter the respective chambers through inlets 7, 8 and the hardener passes into the mixing chamber via a passage 6 including a non-return valve 14. The mixing means include a star wheel 9.
Patent GB-1414023-A (GB)
Title: Valve gear for internal combustion engines
IPC: F01L1/18
Filed: 1973-10-05
Abstract: 1414023 Cam followers AUTOMOBILOVE ZAVODY NARODNI PODNIK 5 Oct 1973 [10 Oct 1972] 46550/73 Heading F2K An I.C. engine O.H.C. valve rocker arm 2 has a cam engaging pad the sliding surface 4 of which is formed as an involute curve E the base circle k of which is centred on the pivot axis A of the rocker arm. The radius R K  of the base circle k of the involute is smaller than the difference between the distance G of the centre of the rocker arm axis A from the centre B of the cam, and the radius R B  of the base circle m of the cam i.e. R K <G-R B . The arrangement is such that the effective cam engaging leverage radius arm of the rocker lever remains constant with any angular displacement of the cam since the normal n to the contact surface of the rocker lever 2 and the cam 1 is permanently a tangent to the base circle k.
Patent GB-1530179-A (GB)
Title: Bandages
IPC: A61F13/06
Filed: 1976-11-11
Abstract: The circular elastic bandage for limbs and their joints, made of elastic textile, is intended to be soft, comfortable to wear and to be non-wrinkling. To this end it consists all round of at least two fabric layers (3, 4) which lie one on the other, are movable one on the other and, in the case of knitwear or hosiery, have in each case a loose structure of 6 to 10 stitches per cm and, in the case of woven fabric, have 6 to 10 interlacings per cm and otherwise have an extensibility of 25 to 35 cm per 100 g for a fabric strip of 10 cm length and 1 cm width. <IMAGE>
Patent GB-1174571-A (GB)
Title: Development of Electrostatic Images
Inventor: MAHO CHARLES
IPC: G03G5/16
Filed: 1965-11-05
Abstract: 1,174,571. Electro-photographic developers. GEVAERT-AGFA N.V. Nov.4, 1966 [Nov. 5, 1965], No.47079/65. Heading G2H. Spherical or substantially spherical particles prepared by abruptly cooling droplets of molten ferromagnetic metal by a liquid medium, and which are optionally coated with another metal or a thermoplastic resin, are used as carriers in the development of conductivity and electrostatic charge images. The metal particles are preferably pure iron, or steel containing C, Ni, Mn, Mo and/ or Cr. The particles are preferably made by forming molten drops of metal using a gas/wire gun, cooling in a container containing an upper layer of water and a lower layer of a chlorinated liquid containing an anti-oxidant, mixing with tungsten trisulphide and heating in a reducing atmosphere. The resin may be cellulose nitrate, colophony or its esters, ethyl cellulose, hydrogenated rosin glycerol ester, a vinyl copolymer containing acid groups, or a polyamide or silicone, resin. An anionic or cationic surfactant (e.g. a nitrate salt of an amino amide, and/or an organic phosphate) may be incorporated in the resin or absorbed on the metal particles. The carrier particles may be used in conjunction with either toner particles consisting of an esterified colophony/ maleic anhydride condensate, nigrosine, pitch and tricresyl phosphate or toner particles which consist of metal particles which have been prepared in a similar manner to the carrier, and which may be coated with a resin (e.g. a polyamide resin, an epoxy resin, asphalt, or a heat-curable phenol-formaldehyde or a urea-formaldehyde resin).