baber/WOPTO huggingface dataset:
Patent GB-1450690-A (GB)
Title: Electrophotography
IPC: G03G15/16
Filed: 1973-09-27
Abstract: 1450690 Developing electrostatic images CANON KK 27 Sept 1973 [29 Sept 1972] 45339/73 Heading G2H An electro-photographic copying apparatus having a liquid developing means 5 is provided with a roller 21 (preferably conductive) in a closely spaced relationship with the xerographic surface 1 for removing excess developer adhering to the non- image areas and preferably reducing or eliminating fog. The roller, which may be earthed, is carried on pivotal arms 22 and is held spaced from the surface 1' by rollers 23 coaxial therewith and which engage the edges of the surface 1. The roller 21 is kept clean by an absorbtive member 27 which engages the roller surface and is kept moist by having a portion thereof dipping into the liquid developer. A thin insulative or conductive strip 30 also engages the roller 21 for removing toner therefrom. The liquid developing station comprises a developing electrode 7, a longitudinally extending groove 7 3  for admitting developer to the space between the drum 1 and the electrode, a passage 72 for supplying developer to the groove and a reservoir 7 1  for admitting developer to the supply passage. The developer is pumped into the reservoir through a passage 14 such as to impinge on a plate 16 which prevents uneven distribution of the developer. The xerographic drum is primarily charged at station 2, is subjected to simultaneous slit exposure and A.C. discharge or charging at station 3 (or exposure and then A.C. discharge or charging) with the charging being of opposite polarity to the primary charging. The drum is exposed overall at 4 and developed as described above. Excess developer is removed by corona discharge 9 and the image is transferred to a copy sheet P under the influence of transfer charged 10. Blade cleaner 12 removes any remaining toner.
Patent GB-1001326-A (GB)
Title: Automatic gravel excavating plant
Inventor: WAAG OSKAR
IPC: E02F3/47
Filed: 1963-11-20
Abstract: 1,001,326. Gravel-excavating plant. MANNHEIMER MASCHINENFABRIK MOHR & FEDERHAFF A.G. Nov. 20, 1963, No. 45800/63. Heading E1F. Incorporated in the plant is an electrical control system for the automatic regulation of the excavating cycle of the plant.
Patent GB-1106111-A (GB)
Title: Improvements in or relating to colour mixture computing apparatus
Inventor: CUTLER ALBERT ERNEST
IPC: G06G7/75
Filed: 1965-10-29
Abstract: 1,106,111. Photo-electric spectrometry. COMMUNICATIONS PATENTS Ltd. Oct. 29, 1965, No.45895/65. Heading G1A. In matching the colour of two dyed samples a circuit receives two signals which are a function of the reflectances (or transmittances) of the samples for a given wavelength and derives a signal indicative of the difference in reflection (or transmittance) of the samples and hence their degree of colour match. In the circuit shown in Fig. 2 terminals 12 and 13 of the amplifier receive signals which represent the ratio K/S for the two samples, which is a function of reflectance and where K and S are the coefficients of absorbtion and scatter, respectively, at the given wavelength. This function is linearly affected by dye-stuff concentration and is additive for mixtures of dyes. A difference signal produced by the amplifier is fed to one end of a potentiometer 30, the wiper position of which is indicative of the reflection of the reference sample of the two samples and whose winding is contoured to be the K/S - reflection function so as to give an output from the wiper to terminal 31 indicative of the difference in reflection between the two samples, as a fraction of the reflectance of the reference sample. This output is also passed to a second potentiometer having the same mechanical input as the first potentiometer to give a difference signal at terminal 33 which is not a fraction. The input signals at terminals 12 and 13 of the amplifier are 180‹ out of phase with one another and a phase sensitive rectifier is connected to either terminal 31 or 33 which controls a central zero indicator. In another arrangement Fig. 3 (not shown) there is feedback from the wiper of the first potentiometer to the input of the amplifier whose output is then the fractional signal as before at terminal 31. Rectification takes place before passing the signal from the amplifier to potentiometer 32. In a further arrangement Fig. 1 (not shown) the reflectance difference signal is generated by a first potentiometer which is expressed as a fraction of reflectance by means of a second potentiometer.
Patent GB-1157658-A (GB)
Title: Heat Exchangers
Inventor: EDGE DENNIS ALBERT
IPC: F28F21/08
Filed: 1966-10-14
Abstract: 1,157,658. Copper alloys. IMPERIAL METAL INDUSTRIES (KYNOCH) Ltd. Oct. 3, 1967 [Oct.14, 1966], No.46067/66. Heading C7A. Heat exchange elements, e.g. for a motor car radiator, are made of an alloy consisting, by weight, of Sn 0À02 - 0À5% Cu and impurities - balance. Impurities may be P and 0À1% Zn. Strip suitable for fabrication into heat exchange elements may be made by pre-heating slab ingot at 800‹C., hot rolling, cold-rolling twice and annealing at 500‹ C., and finally cold-rolling to a thickness of 0À001 - 0À01 inch.
Patent GB-1380633-A (GB)
Title: Hose construction
IPC: F16L11/11
Filed: 1972-10-06
Abstract: 1380633 Flexible hose DAYCO CORP 6 Oct 1972 [3 Jan 1972] 46257/72 Heading F2P A hose construction comprises a flexible hose 21 of elastomeric material formed by differential fluid pressure and having concentric ribs formed by convolutions 26 extending radially outwards on its outside surface, a flexible member 22 made of non-metallic material attached against the outside surface substantially along the full length of said hose and a resilient cover 23. As shown the hose 21 is formed of a plurality of spaced tubular segments 24 interconnected by a plurality of integral convolutions 26 having a plurality of recesses 27 in aligned relation to define a groove to receive reinforcing members 22. The members 22 may be tubular, as shown, in which case they can be used to convey fluid, or they may be of solid form of circular or square cross-section. They may also include electrical conduction. The recesses 27 may be axially aligned as shown or may be arranged in a spiral pattern and the members 22 laid spirally therein. An outer cover 23 of elastomeric material is formed in position, e.g. by extrusion, tightly against the hose 21 and members 22 so as to conform closely to the outer configuration of these components. In a further embodiment, the convolutions are in spiral form along the length of the hose and the members 22 laid spirally between the convolutions.
Patent GB-1452266-A (GB)
Title: Cookers
IPC: F24C15/20
Filed: 1972-10-09
Abstract: 1452266 Grills W M STILL & SONS Ltd 13 Nov 1973 [9 Oct 1972] 46520/72 Heading A4D [Also in Division F4] A cooker or grill comprises an oven 2 with a grill pan 6 preferably heated by infrared heating elements 4. A filter housing 10 is attached beneath the oven 2 and contains a grease and smoke filter 12 and an activated carbon filter 14. A centrifugal fan (18), Fig. 1 (not shown) is located in a volute casing to one side of the filter housing and draws the fumes from the oven through the filters to an outlet (54), Fig. 3 (not shown). As shown, the fumes pass through a number of openings in a top reflector plate 24 and downwardly in a passage 30 to a back passage 36 of the filter housing. The filters may be disposed horizontally or angularly. The filter housing may be removed and replaced by a plain base. A controls compartment is located to one side of the oven above the fan (see Fig. 1). The fan (18) also draws cooling air through louvres into the controls compartment. A second fan Fig. 4, (not shown) may be provided for this purpose.
Patent GB-1435024-A (GB)
Title: Deep freezers
IPC: F25D11/00
Filed: 1973-10-05
Abstract: 1435024 Refrigerating ELECTROLUX Ltd 5 Oct 1973 [12 Oct 1972] 46592/73 Heading F4H An absorption refrigerating apparatus has an evaporator 53 which is mounted in a freezer compartment 66 of a refrigerator and which is heat-conductively connected to the condensing part 56 of a secondary system operating with condensation and evaporation of a refrigerant, e.g. dichlorodifluoromethane. The evaporator part of the secondary system comprises a coil 58 and coils 60, 62 forming shelves in a storage compartment 55. The absorption refrigeration apparatus comprises a boiler 22, a gas-heat exchanger 23, a relatively large absorber 24, a liquid-heat exchanger 26, a condenser 42 and an analyser 29. A pump 32 is heat-conductively connected to a flue 38 for a gas burner and to a sleeve 33 for an electric heating cartridge 34. The part of the coil of the evaporator 53 to the right in Fig. 4 operates at low temperature, e.g. between -30 and -22 C., and is heatconductively connected to the secondary condenser 56, and the evaporator coil part 64 operates at a higher temperature, e.g. between -22 and -19 C., and is heat-conductively connected to a freezing shelf 65. A removable heat-insulating body may be provided under the evaporator coil 64 to separate it from the chamber 55, Fig. 6 (not shown), and the condenser 42 may be cooled by a fan.
Patent GB-1055779-A (GB)
Title: Buoyancy device to be placed around a limb of the user
IPC: B63C9/15
Filed: 1964-01-18
Abstract: 1,055,779. Swimming appliances. B. MARKWITZ. Nov. 18, 1964 [April 3, 1964], No. 47009/64. Heading B7U. A buoyancy device comprises an inflatable envelope (1) to be placed around a limb of the user, the envelope having at least one non- inflatable portion (9) extending over a part of that dimension (a) of the envelope which is to extend circumferentially of said limb and over the whole of the dimension (b) which is to extend longitudinally of the limb, the said non- inflatable portion being adapted to lie, when the envelope is inflated, flat against the limb around which the envelope is placed.
Patent GB-1454019-A (GB)
Title: Preparing 1,5-dimethyltetralin
IPC: C07C15/24
Filed: 1974-10-31
Abstract: 1454019 1,5-Dimethyltetralin SUN VENTURES Inc 31 Oct 1974 [31 Oct 1973] 47115/74 Heading C5E 1,5 - Dimethyltetralin is prepared by isomerizing 5-0-tolypentene-2 in a fixed bed adiabatic reactor containing an acidic catalyst, a portion of the product being cooled and recycled to the reactor to maintain the reactor temperature below 600 F. The catalyst may be phosphoric acid supported on kieselguhr. The temperature of the recycle-diluted feed at the reactor inlet may be 350-425 F.
Patent GB-1021819-A (GB)
Title: Device for the axial fixing of machine parts in smooth bores
IPC: B21K25/00
Filed: 1964-11-20
Abstract: 1,021,819. Stamping. W. SCHAEFFLER and G. SCHAEFFLER, [trading as INDUSTRIEWERK SCHAEFFLER], Nov. 20, 1964 [Nov. 29, 1963], No. 47351/64. Heading B3H. A press-ram for inserting a part 11, Fig. 4 (not shown), into a bore and striking tongues 12 out of the bore-wall which retain the part 11 in the bore, comprises ribs 2, Fig. 2 (not shown), for forming the tongues 12 and a plunger 8 in a passage 4 in the ram and having fingers 10 projecting through the end of the ram for engaging the part 11 and locating the ram coaxially of the bore. The fingers 10 are guided in grooves 5 in the passage 4 and biased into an extended position by a spring 9. After positioning the part 11, further movement of the ram, during formation of the tongues 12, compresses the spring 9.
Patent GB-1287917-A (GB)
IPC: C08F10/00
Filed: 1969-09-25
Abstract: 1287917 Preparing nascent polyolefin fibres CROWN ZELLERBACH CORP 25 Sept 1969 [22 Oct 1968] 47373/69 Heading C3P Olefins are polymerized by a process which comprises introducing the monomer into a reaction medium which is a solvent for the desired polymer and polymerizing the monomer in the presence of a co-ordination catalyst while maintaining the reaction mixture at a temperature below the melt dissolution temperature of the polymer in the reaction medium and while agitating the reaction medium at a shear stress so high as to produce nascent polyolefin in the form of fibres having diameters of the same order of magnitude as cellulosic papermaking fibres. The monomer may be ethylene, propylene, butene, pentene, 4-methylpentene- 1, vinylcyclohexane, butadiene or isoprene. The reaction medium may be hexane, heptane, isooctane, tetralin, decalin, cyclohexane, toluene, xylene, mineral oils or chlorinated hydrocarbons. Preferred catalysts comprise titanium trichloride, titanium tetrachloride, vanadium tetrachloride or vanadium oxytrichloride and diethyl aluminium chloride or triethyl aluminium. The products comprise fibrils of diameter at least one micron aggregated in chain like bundles, and may be used to prepare non- woven webs by water- or air-laying processes. Apparatus suitable for carrying out the process of the invention is described and illustrated and examples describe the preparation of nascent polyolefin fibres by polymerizing (1-23) ethylene and (24) propylene.
Patent GB-1242930-A (GB)
Title: Method for the high velocity liquid jet cutting of soft materials
Inventor: FRANZ NORMAN CHARLES
IPC: B26F3/00
Filed: 1969-09-26
Abstract: 1,242,930. Cutting by liquid jet. N. C. FRANZ. 26 Sept, 1969 [1 Oct., 1968], No. 47407/69. Heading B4B. [Also in Division F1] A method of cutting soft material by a high velocity liquid jet comprises selecting a suitable soft material e.g. cardboard, or nylon or cotton fabric, which heats at the edges of the cut due to the passage of the liquid therethrough, providing a high velocity liquid jet with sufficient energy to cut through the material as it is fed through the jet to produce cutting at a rate such that the jet liquid retained at the point of cut volatilizes from the cut within a short period of time due to the heating of the point of cut by the high velocity liquid jet. The apparatus for producing the high velocity jet comprises an hydraulic pump 12 driven from an electric motor 11 and feeding liquid from a reservoir 15 to one or other side of a piston 18a via a relief valve 16 and four-way valve 17. The piston 18a is provided with a ram 19 movable in a cell 20 into which the liquid, such as water, is fed; the liquid passes from the cell to a nozzle 22 via a two-way valve 21. The material is mounted on a table 24 having an opening for the passage of the jet and moved at a selected speed by means 25, 26. Various examples of the material, jet pressure and nozzle sizes and feed speed are described.
Patent GB-474088-A (GB)
Abstract: 474,088. Electric battery lamp for use in sewers. CHAPPLE, E. F. May 25, 1936, No. 14680. [Classes 39 (ii) and 75 (iv)] An electric lamp for use in sewers comprises an incandescent electric lamp N and an associated battery K, both enclosed by an airtight and water-tight casing which is composed of metal and glass and is adapted to fit on the end of drain rods. A glass cylinder E is clamped between upper and lower rings C, F. A cap A which screws onto the upper ring C is provided with a lug L threaded to screw on to the complementary end of a rod. M is a window in the cap A.
Patent GB-1362631-A (GB)
Title: Apparatus for determining thermal stress in the shaft of a steam or gas turbine
IPC: F01D17/08
Filed: 1972-10-13
Abstract: 1362631 Determining thermal stress in a turbine shaft KRAFTWERK UNION AG 13 Oct 1972 [16 Oct 1971] 47476/72 Heading G1N The average temperature of the shaft of a gas or steam turbine is determined by calculation based on the measured temperature at the surface and is used as an indication of the stress in the shaft. As shown Fig. 1, a temperature sensor 5 is located on the inner wall of the turbine housing 1, 2 to develop a signal # o  representing the surface temperature of the shaft 3. This signal is fed to a comparator 9 together with a signal # m  developed in a computer 7 representing the average shaft temperature, based on the known thermal conductivity of the shaft material and dimensions of the shaft, and the difference # o -# m  is a measure of the thermal stress in the shaft.
Patent GB-1360876-A (GB)
Title: Prefabricated wooden buildings
IPC: E04B7/20
Filed: 1971-10-12
Abstract: 1360876 Prefabricated buildings MISAWA HOMES CO Ltd 12 Oct 1971 [15 April 1971] 47515/71 Heading E1A A single or double-storey building is constructed from prefabricated laminated, floor, roof and wall panels which are bonded together along adjacent edges by an adhesive consisting of a synthetic resin and by screwthreaded nails. The panels such as 9, 10 may consist of plates of plywood boards or slats bonded to opposite sides of a lattice frame and the resulting gaps therebetween may be filled with a heat insulating material such as sponge. The building is erected on a concrete foundation 1 having anchor bolts 19 therein to secure the floor panels 10 and the wall panels 9; foundation members 2 and shims 17 of cypress wood being positioned as shown. For minor details of construction including materials employed and triangular-shaped ridge panels the Specification and remaining drawings (not shown) should be referred to.
Patent GB-1064890-A (GB)
Title: Magnetic transducer head
IPC: G11B5/265
Filed: 1965-11-10
Abstract: 1,064,890. Reading magnetic digital information. INTERNATIONAL BUSINESS MACHINES CORPORATION. Nov. 10, 1965 [Dec. 7, 1964], No. 47596/65. Heading-G8R. A three-gap head, Fig. 1, has a pair of probes 12, 13 mounted with spacers 14, 21, 15 between  polepieces 10, 11, the probes being brought together remote from the record and their reluctance simultaneously varied by a H.F. bias source 20.  The probes respond particularly to magnetic flux perpendicular to the record, as when a longitudinal flux-transition point, i.e. a recorded " I," passes them. The reluctance of the probes being time-related as in Fig. 3(a) in accordance with the frequency f of the source 20, the effect of a pole in the record tape over probe 12 is to influence the-probe with flux 30, the flux admitted by the biasing waveform 20 being 31, Fig. 3(b). The same pole, on advancing to probe 13, causes flux 33, Fig. 3(c). Corresponding voltages, Figs 3(d) 3(e), appear .across the read windings 16, 17, Fig. 1; these are series-opposed connected, so that the envelope Of the resultant output is as at Fig. 3(f). A recorded signal corresponding to Fig. 6(a) thus gives rises to an output, after demodula tion of the waveform. Fig. 3(f) to the wave form, Fig 6(b) and a Schmidt trigger with, suitably set levels, Fig. 6(b) gives the output Fig 6(c).  In another embodiment (Fig 4 not shown) a D.C. bias is applied across the windings 16, 17.
Patent GB-978670-A (GB)
Title: Improvements in or relating to isothiuronium salts of 2-haloethyl sulfide dyestuffs
IPC: C09B69/00
Filed: 1962-12-17
Abstract: The invention comprises a dyestuff of the formula <FORM:0978670/C4-C5/1> wherein 2 is a water-insoluble dyestuff moiety of the azo, anthraquinone, phthalocyanine or nitro series; R1 and R2, as individual substituents are hydrogen or lower alkyl containing from 1 to 4 carbon atoms, or taken collectively, represent an alkylene bridge having 2 or 3 carbon atoms, said bridge connecting the N atoms to which R1 and R2 are attached; R3 and R4 are hydrogen or lower alkyl containing from 1 to 4 carbon atoms; n is an integer having a value from 1 to 4 and X is chlorine or bromine. The dyes of the above formula may be prepared by reacting an appropriate water-insoluble dye having at least one 2-haloethylthio group with at least one mol. of a thiourea per 2-haloethylthio group. Large numbers of starting materials for use in preparing the dyes are listed. Representative of the many processes described in examples are those in which 1,8-dichloranthraquinone is reacted with 2-mercaptoethanol, the product is reacted with thionyl chloride and the 1,8-bis-(21-chlorethylthio)-anthraquinone obtained is reacted with ethylene thiourea; 1 - [4 - (2 - bromoethylthiophenylazo)]-2-naphthol is reacted with N,N,N1,N1-tetramethylthiourea; the dye 3,31-bis - (2 - chloroethylthio)benzidine --> o-chlorophenol is reacted with thiourea; in a similar process the dye 2-methoxy-4-(2-chloroethylthio)aniline --> o-anisidine --> 2-naphthol is reacted with thiourea; copper tetra (4) mercaptophthalocyanine is reacted with ethylene oxide to form the tetra-(2-hydroxyethylthio)phtholocyanine, reacting the latter with thionyl chloride and treating the product with 2 - imidazol - idinethione and 2,4 - dinitro - 41-(2 - bromo - ethylthio)diphenylamine is reacted with thiourea.  Additional thioureas specified include N,N-dimethyl thiourea and N,N,N1-trimethyl thiourea.  The dyes are applied to silk, wool, regenerated protein, nylon and modified polyacrylonitrile textile materials by conventional methods.
Patent GB-1402433-A (GB)
Title: Games table
IPC: A63D15/06
Filed: 1972-10-19
Abstract: 1402433 Tables D K PILKINGTON and D MAARTENS 19 Oct 1972 [20 Oct 1971] 48128/72 Heading A4H [Also in Division A6] A games table comprises a flat circular area bounded by a resilient cushion 20 and having a central pocket 18 for receiving a ball. The table stands on three or four adjustable legs or a pedestal. The playing surface of fibre-board and/or glass or slate may be covered with foam-backed nylon which may be stapled in position. The rim is of six (or 3, 9 or 12) arcuate sections screwed to the table top. The rubber cushion is L-shaped (or U-shaped, Fig. 4) and may be nailed or screwed to the wooden rim or to the table. The ball may fall into a metal or netting trough 30 having a flap 32. In a modification, the table-top is secured by Z-clips to panels 84, Fig. 6, and can be covered by a hinged or single-piece dining table top 96. Finger-holes 98 facilitate handling.  In a further modification, the table top is reversible to act as a dining-table, the hole being plugged. The table may be used for snooker-like games and may be so marked.
Patent GB-1120132-A (GB)
Title: Improvements in automatic clutch engagement
Inventor: KAY ANTHONY GILBERT
IPC: F16H63/02
Filed: 1964-11-27
Abstract: 1,120,132. Frequency discriminators. SMITHS INDUSTRIES Ltd. 26 Nov., 1965 27 Nov., 1964], No. 48385/64. Heading H3A. [Also in Division F2] In a control for a motor vehicle friction clutch two transformers 30, 31 have sharply saturating magnetic cores and primary windings respectively connected to A.C. generators driven by an engine and a change-speed gear first motion shaft, so that the repetition rates of pulses appearing at the secondary windings depend on engine and first motion shaft speeds. These pulses are rectified by diodes D32-D35 and appear in series opposition across two resistors 36, 37 before being smoothed by resistors 38, 39 and capacitors 40, 41. A signal Vd representing the difference in engine and first motion shaft speeds is applied to the base of a transistor Tr6.
Patent GB-1391133-A (GB)
Title: Wiper blade for windscreen wiper installations on automotive vehicles
IPC: B60S1/38
Filed: 1973-10-25
Abstract: 1391133 Windscreen wipers SWFSPEZIALFABRIK FUER AUTOZUBEHOER GUSTAV RAU GmbH 25 Oct 1973 [17 Jan 1973] 49706/73 Heading A4F In a windscreen wiper blade assembly a plastics main yoke 10 is pivotally connected to an intermediate yoke 13 by a coupling comprising a cylindrical extension 11 on the yoke 10 engaging in a cylindrical recess 14 in the yoke 13, the ends of the recess 14 opening into slots 16, e.g. of triangular section, in the yoke 13, and an aperture 17 being formed in the wall of the recess 14 at the side facing away from the yoke 10.
Patent GB-1071180-A (GB)
Title: Couplers for colour photography
IPC: C07C311/16
Filed: 1963-12-17
Abstract: The invention relates to compounds of the formula <FORM:1071180/C2/1> wherein R is a hydroxyl, amino, alkylamino' dialkylamino, acylamino, arylamino, diarylamino, aralkylamino, heterocyclylamino, alkoxy, aryloxy, substituted aryloxy, substituted arylamino or alkyl, substituted arylamino. These compounds are obtained by reacting p-acetylbenzene-sulphonylchloride with ammonia, the appropriately substituted amine, or the appropriate alcohol or phenol and then brominating and subsequently treating with KCN. p-Acetylbenzenesulphonylchloride is obtained by diazotizing p-amino-acetophenone in the presence of HCl, and stirring the product into glacial acetic acid containing sulphur dioxide and cuprous chloride.