baber/WOPTO huggingface dataset:
Patent GB-1252661-A (GB)
IPC: H03F1/30
Filed: 1969-01-09
Abstract: 1,252,661. Transistor biasing circuits. INTERNATIONAL BUSINESS MACHINES CORP. 9 Jan., 1969 [17 Jan., 1968], No. 1379/69. Heading H3T. [Also in Division G3] A transistor 7 has a diode 9a or diodes in series with its emitter and two diodes 10, 11 in series across the series arrangement of the emitter-base path and the diode 9a, the diodes being transistors having the collector shorted to the base and all transistors being matched. It is shown that the various currents in Fig. 2d have the relation I 2 =nI 1 <SP>2</SP>/(I 2 +I 3 ) (where n is the number of transistors 9) and that the transistors being similar, as in an integrated circuit, the relation between the currents is substantially independent of supply voltages and temperature. In Fig. 3 this circuit 46, 47, 65, 66 is used as a stable constant current source for a differential amplifier comprising an input stage 43, 44 feeding an output stage 60, 61. Resistor 67 (or a field effect transistor 70) is chosen to provide a current of one unit. This divides equally between diode connected transistors 50 to 53 and since the base-emitter paths of these transistors are in parallel with transistors 48 and 49, the same base current flows in all transistors and as the transistors are similar the same collector current. Accordingly one quarter unit current flows in the collectors of 48 and 49 and this defines the current towards the collectors of 44 and 43. The combined current of these transistors (equal to one half unit) flows into the stabilizing circuit and the current relationships is defined such that the current I 3  into the stabilizing circuit has a value of one and a half units (three quarter in each of transistors 60 and 61) and the combined current in 47 is accordingly two units. The current I 3  represents negative feed back of the in-phase component of the circuit. In an alternative circuit (Fig. 1, not shown) the current supply circuit for each collector of the differential amplifiers 43, 44 is a single transistors (12, 13) having an emitter resistor and having a single diode-connected transistor across the base emitter path.
Patent GB-1257279-A (GB)
IPC: A23L25/00
Filed: 1970-10-05
Abstract: 1,257,279. Treating nuts. PEANUT RESEARCH & TESTING LABORATORIES Inc. 5 Oct., 1970 [3 Oct., 1969], No. 47249/70. Headings A2B and A2Q. Nuts, e.g. peanuts, which have been partially defatted by pressing are reconstituted to their original size and shape by immersion in a first liquid bath heated to a roasting temperature, e.g. 300-350‹F., and then immersed in a second liquid bath at a temperature substantially below that of the first bath, e.g. 130-140‹F., for a time sufficient for the liquid of the second bath to saturate the nuts. Preferably both baths are oil baths, the second bath being of a high stability oil which may incorporate flavouring to simulate the flavour of more expensive nuts or impart a completely different, e.g. fruit, flavour. Choice of water or abrasive blanching before the pressing determines the texture of the final product.
Patent GB-1257971-A (GB)
IPC: C07D315/00
Filed: 1969-07-18
Abstract: 1,257,971. Condensation polymers &c. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 16 July, 1970 [18 July, 1969], No. 36347/69. Heading C3R. [Also in Division C2] Propiolactones stabilized by incorporating thereinto a minor amount of SO 2  (e.g. 0À00005- 2% by weight of SO 2  based on lactone) upon polymerization yield polymers of improved properties.
Patent GB-1258146-A (GB)
IPC: H01L31/0203
Filed: 1969-11-14
Abstract: 1,258,146. Photosensitive semi-conductor device. VSESOJUZNY ELEKTROTEKHNICHESKY INSTITUT IMENI V.I. LENINA. 14 Nov., 1969, No. 55938/69. Heading H1K. A photosensitive semi-conductor device comprises a base on which a semi-conductor crystal is mounted and which serves as one of the electrodes of the device and an airtight conductive cover provided with a transparent portion, the cover being insulated from the base and provided with a projection for establishing contact with the crystal and for serving as an electrode. A photosensitive semi-conductor crystal 2 is mounted on metallic base 1. The airtight cover 3 is insulated at 4 from the base and is provided with a transparent portion 5. The projection 6 makes contact with the device 2 and is flexible 7 to allow for thermal expansion. In an alternative embodiment (Fig. 2, not shown) a light guide (13) is led into the casing to bring light onto the device (9). A multiplicity of electrodes may be led through the insulating member.
Patent GB-1265239-A (GB)
IPC: B60T15/48
Filed: 1970-10-06
Abstract: 1,265,239. Release valves. ATELIERS DES CHARMILLES S.A. 6 Oct., 1970 [6 Oct., 1969], No. 47352/70. Headings F2F and F2V. A release valve assembly incorporated in railway vehicle pneumatic brake control apparatus and actuable to vent a control reservoir RC and thereby release the brakes, comprises a cylinder 1 holding a piston 2 and a diaphragm 3 which divides the cylinder bore into two chambers 21, 23, whereof chamber 21 is in communication with a main supply conduit CG of the apparatus via a pipe 9 and chamber 23 is in communication with atmosphere via a pipe 12, and a further pipe 11 from the control reservoir RC may be vented via pipe 12 according to the action of a control valve 15, 16 which comprises a spring-biased obturating member 15 and an annular valve seat 16 there also being provided a device in the form of spring element 20 or a permanent magnet which permits the piston 2 to be maintained in any one of several stable positions in operation of the release valve assembly. The operation of the illustrated valve assembly is such that with the main conduit CG and its branch pipe 9 under pressure, the piston 2 is held against an end wall 10 of the cylinder 1 by the action of the pressure and by a spring 18, and the valve 15, 16 is thereby held closed. When the conduit CG and pipe 9 are communicated to atmosphere, piston 2 moves away from the end wall 10 at most by a distance a, which distance a is equal to the distance between a flange 14 of the piston 2 and the obturating member 15 in the position of Fig. 1. The spring 17 of the control valve 15, 16 is as strong as or stronger than the spring 18 and with the pipe 9 at atmospheric pressure the valve assembly is held in a stable position until the pressure in pipe 9 is reduced whereupon the piston 2 moves up to abut the end wall 8 entraining with it the spring segment 20 and the control valve 15, 16 is opened to vent the reservoir RC to atmosphere (Fig. 2). When the pressure on piston 2 from the control reservoir RC drops, the piston 2 will move away from the end wall 8 through an axial distance b but the pipe 11 is maintained open. When the pipe 9 is repressurized, the piston 2 is moved against the end wall 10 and the valve 15, 16 is closed. The spring element 20 may be replaced by a permanent magnet either in the end wall 8 or in the corresponding face of the piston 2.
Patent GB-1265505-A (GB)
IPC: A61L29/08
Filed: 1969-07-31
Abstract: 1,265,505. Coated catheters. NATIONAL PATENT DEVELOPMENT CORP. 31 July, 1969 [13 Aug., 1968], No. 38431/69. Heading B2E. [Also in Division A5] A process of preparing a coated catheter comprises applying a first liquid coating of a hydrophilic acrylate or methacrylate polymer and polymerising it to a solid coating and then applying a second liquid coating of a hydrophilic acrylate or methacrylate polymer and polymerising that in turn. There may be more than two coatings and the acrylate or methacrylate polymer need not be the same. The catheter 1 may be of natural or synthetic rubbers such as poly cis isoprene, butadienestyrene copolymer, butyl rubber, silicone rubber e.g. polydimethyl siloxane, neoprene (polychloroprene) or polyvinyl chloride. The acrylate or methacrylate may be a hydroxy lower alkyl acrylate or methacrylate, a hydroxy lower alkoxy lower alkyl acrylate or methacrylate. The acrylate or methacrylate may contain a minor amount of various specified cross-linking agents and may be impregnated with an antibiotic. The coatings, which may be on the inside and the outside of the catheter, are produced by dipping the catheter in a casting syrup of the acrylate or methacrylate and curing the coating by heating the catheter in an oven.
Patent GB-1301902-A (GB)
IPC: A45D7/04
Filed: 1970-01-14
Abstract: 1301902 Two-component pack for use in the treatment of hair L'OREAL 14 Jan 1970 1909/70 Addition to 1197037 Heading DIP A two-component pack used in the treatment of hair comprises, as the first component, bio-methoxymethyl urea in solution at a concentration of 10-30% by weight or as a powder, and, as the second component, an aqueous or aqueous alcoholic solution containing an acid polymerisation catalyst, at least one of the components containing a perfume, the proportions of the active ingredients in the components being such that on mixing the entire contents of the two components a composition containing 0.2-10% by weight of bis-methoxymethyl urea is obtained. The acid catalyst which may be acetic, lactic, citric, phosphoric or sulphuric acid or monosodium or monopotassium phosphate, may be present in an amount such that the resulting composition has a pH of 1.5-5. The resulting composition may be in the form of a hair setting lotion.
Patent GB-1302609-A (GB)
IPC: G01D5/241
Filed: 1970-05-15
Abstract: 1302609 Angular position encoders KOMBINAT ZENTRONIK VEB 15 May 1970 23709/70 Heading G4H [Also in Division H1] An angular position encoder comprises a fixed disc 1 having conductive surfaces 2, 3 and a rotatable disc 4 having conductive surfaces 5 so that relative rotation between the superposed discs causes variations of the capacitances C3, C4 formed by the surfaces. Alternate surfaces 2 and 3 are connected to respective conductors 9 and 8 for connection of the capacitances C3, C4 in the feedback circuit of a high frequency oscillator including an amplifier 11. As the disc 4 rotates, the capacitances C3, C4 fluctuate between maximum and minimum values to cause a variation in the feedback factor. When the ratio of the capacitance C4 to the capacitance C3 has a relatively high value, the oscillator supplies an output which is rectified and shaped to form a square pulse but when the ratio has a relatively low value the oscillator is switched off. The number of pulses supplied to an output terminal 19 therefore depends on the rotation of the disc 4.
Patent GB-1303064-A (GB)
IPC: G03B17/24
Filed: 1969-05-07
Abstract: 1303064 Optical apparatus ROLLS-ROYCE Ltd 23 July 1970 [7 May 1969] 23198/69 Heading G2J An apparatus for measuring the clearance between two adjacent blades 16 of a turbine engine rotor 12 whilst the rotor is in motion comprises a flash bulb 50 for illuminating the clearance via a half-silvered mirror 52, an image converter 34 and photographic film 40 on which an image of the clearance is recorded, the flash bulb being energized via a trigger circuit 56, delay circuit 55 and power supply 54 when a projection 21 on one of the blades passes an electrode 22, the anode of the image converted being energized via a trigger circuit 46, delay circuit 45 and power supply 44 when the projection passes an electrode 23, and the photographic film being supported on spools 42 one of which is connected to a stepping motor which advances the film one frame in response to a signal from trigger circuit 46. The image converter may be replaced by a camera. The two electrodes and two trigger circuits may be replaced by a single electrode and trigger circuit used in conjunction with two adjustable delay circuits in parallel.
Patent GB-1304088-A (GB)
IPC: C07D277/18
Filed: 1970-09-24
Abstract: 1304088 Thiazolidine derivatives IMPERIAL CHEMICAL INDUSTRIES Ltd 5 Aug 1971 [24 Sept 1970 27 Jan 1971] 45575/70 and 3279/71 Heading C2C Compounds of formula wherein X is Cl or Br, and their acid addition salts, are prepared by reacting the corresponding alcohol or an acid addition salt thereof with (a) a halogenating agent and (b) a halogenradical-producing agent; they may then be cyclized to tetranisole or a pharmaceutically acceptable acid addition salt thereof. Specified reactants are (a) SOCl 2 , SOBr 2 , POCl 3 , POBr 3 , PCl 3 , PCl 5 , PBr 3 , PBr 5 , ClSO 3 H; (b) SO 2 Cl 2 , Br 2 , Cl 2 , I 2 , ICl, ICl 3 , N-bromo-, -chloro- or -iodo-succinimide, N,N<SP>1</SP> - dibromo - 5,5 - dimethylhydantoin.
Patent GB-1305288-A (GB)
IPC: D06M15/55
Filed: 1970-05-29
Abstract: 1305288 Forms of wood SOUTHEASTERN PRODUCTS Inc 29 May 1970 26014/70 Heading B5L [Also in Divisions D1-D2] A veneered product comprises a crossbanding material, a cone and a veneer, the cone having a face adhered to one surface of the cross-banding sheet, a first coating of veneering adhesive disposed between the face of the cone and one surface of the cross-banding sheet, and a second coating of veneering adhesive disposed between the face of the veneer and another opposite surface of the cross-banding sheet with projecting portions of each of the adhesive coatings extending into the body of the cured resin in the cross-banding sheet. The crossbanding material used comprises a porous mat of heat and moisture stable filaments which are intertwined to form a sheet, the individual filaments of the sheet following tortuous 3D paths and being randomly oriented in relation to other filaments whereby each filament crosses a multiplicity of other filaments at varying angles and in different directions, (e.g. spun-bonded), the sheet being loaded with a thermosetting resin which is cured in situ to render the mat substantially incompressible during veneering, the resin coating the individual filaments and effectively bonding them together to provide an integral 3D structure such that the outermost filaments protrude from the body of the resins to form void openings adjacent to the surfaces of the sheet to serve as receptors for the veneer adhesive and to permit migration of the veneering adhesive laterally along the surfaces of the sheet.
Patent GB-1313491-A (GB)
Title: Internal combustion engine crankshafts
IPC: F02B75/22
Filed: 1969-04-25
Abstract: 1313491 Making crank-shafts; welding by fusion PERKINS ENGINES Ltd 23 April 1970 [25 April 1969] 21147/69 Headings B3A B3R [Also in Division F2] A method of attaching balance weights to a crank-shaft comprises forming balance weights 10, 11, 12, providing the balance weights and web portions 7, 8, 9 with sets of complementary surfaces 14, 15, 16 and 17, 18, 19, the sets of the surfaces being arranged at stepped distances from, or at an inclination to, the crank-shaft axis, Fig. 6 (not shown), and electron-beam welding the sets of surfaces in succession. The crank-shaft body is forged and finished machined prior to attachment of the balance weights. The surfaces 17, 18, 19 and 14, 15, 16 are straight, but they may also be part-cylindrical, Fig. 8 (not shown). The inclined surfaces (17a)-(19a) and (14a)-(16a), Fig. 6, are also straight. After machining, the balance weight 12 is placed on the web 9 and a discharge head 20 of electronbeam welding apparatus is aligned with the interface of the surfaces 16, 19. The surfaces 18, 17, being successively stepped relative to the surface 19, do not interfere with the electron beam. The balance weights 11, 10 are next welded in position and the corresponding weights at the other end of the crank-shaft are then attached. Trimmer plates 24 are secured to the weights by a pair of set screws 29, which are passed through holes 10a and screwed into stepped inserts 26. The inserts are a close fit in recesses 32 and enter into holes 25 in the plate 10, where they are electron-beam welded in place. When a thick trimmer plate (34) is used, see Fig. 11 (not shown), a flange (40) on an insert (36) is located in a stepped hole (39) in the plate (34) and a set screw (29) is screwed into the insert to secure the plate (34) to the balance weight (10). Prior to fitting the trimmer plates, the crankshaft is balanced and the bearing surfaces hardened and subsequently cleaned and polished, if necessary.
Patent GB-1315293-A (GB)
Title: Electroluminescent cells
IPC: H05B33/12
Filed: 1971-02-26
Abstract: 1315293 Electroluminescence ASTRONICS CORP 26 Feb 1971 5524/71 Heading C4S An electroluminescent cell comprises first and second electrodes 37, 38, insulation 42 between and in contact with confronting surfaces of the electrodes and electroluminescent material 39 in contact with portions of the first electrode and covering the second electrode. The cell comprises a wire mesh electrode 38, wholly or partially embedded in or resting on electrode 37 and a layer 39 of ZnS phosphor doped with CuCl, Mg. The electrode 37 may be thermoplastic silicone rubber or a pressure sensitive adhesive or resin containing or coated with powdered metal or graphite. Electrodes 38 may be oval or rectangular, stamped from Al blanks. The insulation 42 may be an anodized coating, resin, lacquer or plastics material; it need not extend completely around the electrodes. Another embodiment comprises a support of fabric 80 of natural, synthetic or glass fibres coated on one or both sides with a conductive layer 81 of natural or silicone rubber or elastomeric plastics material, insulated conductive wires or threads 82 sewn into the fabric and a phosphor coating 85. Several cells forming an array of bars are arranged on a common conducting support but individually energized. The electrodes 38 may be arranged in a pattern to form a sign.
Patent GB-1315301-A (GB)
Title: Sailing craft
IPC: B63B15/02
Filed: 1969-04-15
Abstract: 1315301 Mast supports J A OLIVER 10 July 1970 [15 April 1969] 19178/69 Heading B7V A mast support for a sailing boat comprises a member which is plugged into the hub of the mast and is movable about horizontal pin 10 to lower the mast, and a spigot 9 which is pivoted to pin 10 and is journalled in a bush 13 secured to the keel of the boat so that the mast can swing about its longitudinal axis. Fig. 5 (not shown) illustrates a modification in which the mast is mounted in a tabernacle secured to spigot 9. The boom is attached to the mast by a coupling (e.g. of gooseneck form) which provides for horizontal movement of this boom relative to the mast.
Patent GB-1320019-A (GB)
Title: Polycyclic compounds containing a bis-chromone carboxylic acid  structure
IPC: C07D493/04
Filed: 1970-08-01
Abstract: 1320019 Polycyclic carboxylic acids FISONS Ltd 5 July 1971 [1 Aug 1970] 37273/70 Heading C2C Novel compounds of Formula (I) in which L and L<SP>1</SP>, which may be the same or different, each represent a single bond, a single linking atom, or a group -OXO-, in which X represents a C 1-6  alkylene chain optionally substituted by an -OH group, and P, Q, P<SP>1</SP>, Q<SP>1</SP>, which may be the same or different, are each H, OH, halo, C 1-8  alkyl, C 1-8  alkenyl, phenyl or C 1-8  alkoxy, the latter optionally being substituted by C 1-8  alkoxy, OH or a heterocyclic ring containing C and O, may be obtained by (a) cyclizing a compound of Formula II in which either pair of groups A<SP>1</SP>, A<SP>2</SP> may denote -CO-CH=C(COOH)-O- and at least one pair A<SP>1</SP>, A<SP>2</SP> denotes a pair of groups (i) -COCH 2 COCOR<SP>6</SP> and -OM, or (ii) -H and -O-C(COOM)=CHCOOM; R 6  is -OM or a group hydrolysable thereto, and M is H or an alkali metal, and optionally hydrolysing the resulting compound to (I); (b) hydrolysing or oxidizing a compound of Formula (VI) in which D is a group which is hydrolysable or oxidizable to a -COOH group, and D<SP>1</SP> is -COOH or a group D, or (c) selectively dehydrogenating a compound of Formula VII or an ester thereof, in which A<SP>3</SP> and A<SP>4</SP> together represent a chain -COCH 2 CH(COOH)-O- or an ester thereof, or -COCH=C(COOH)-O- or an ester thereof, and optionally converting the resulting ester to (I). Preferably the groups L and L<SP>1</SP> are joined to ortho positions on the benzene nucleus and may be chosen from a carbon-carbon bond, a methylene group, a mono- or di-alkylmethylene group, -O-, -S-, -NH- or -OCH 2 CHOHCH 2 O-. Preparation of intermediates is described as follows: bis - (3 - acetyl - 2,6 - dihydroxy. phenyl)methane is reacted with epichlorohydrin to form 2,12 - diacetyl - 1,7,13 - trihydroxy - 5,9- dioxadibenzo[f : i]cyclodecane; 2,7 - diacetoxydibenzofuran is heated with AlCl 3  and NaCl to  yield 3,6 - diacetyl - 2,7 - dihydroxy - dibenzofuran; 3,6 - diacetyl - 2,7 - dihydroxyfluorene and 2,7 - diacetyl - 3,6 - dihydroxy - 9,9 - dimethyl xanthene are similarly obtained by Fries rearrangement. Pharmaceutical compositions useful in the treatment of asthma, hay fever and urticaria, comprise compounds of Formula (I) above in admixture with a pharmaceutical diluent or carrier in forms suitable for administration orally or by inhalation.
Patent GB-1322885-A (GB)
Title: Locking means for preventing relative rotation between two  members
IPC: B23B31/113
Filed: 1972-01-26
Abstract: 1322885 Bolts BRISTOL ERICKSON Ltd 26 Jan 1972 3749/72 Heading E2A [Also in Divisions B3 and F2] A locking means for preventing relative rotation between two members, spindle 10 and nut 18, comprises a radially extending axially facing surface 17 provided on one member, the spindle, a radially extending flange or ring 20 provided on the other member, nut 18, said flange or ring being concentric with said surface 17 and disposed adjacent thereto, said flange or ring 20 being provided with a plurality of circumferentially spaced-apart apertures 21 and said surface 17 being provided with a plurality of circumferentially spacedapart axially facing recesses 22, a plunger 23 received in each of said apertures and each plunger having a major dimension greater than the axial length of the associated aperture, an actuator ring 25 mounted for rotation on the other member 2, nut 18, and located on the side of said flange or ring 20 away from said surface 17, said actuator ring 25 being provided on one side with a plurality of circumferentially spaced-apart recesses or cam surfaces 26 which when the ring 25 is moved to one circumferential position relative to nut 18 causes or allows the plungers to engage with the recesses 22 and which when the ring is moved to a second position allows or causes the plungers to disengage the recesses, said actuator ring 25 being resiliently urged towards said one position by resilient means. The circumferential movement of the ring 25 is limited by a pin 31. Relative movement between the ring 25 and the nut by a tool 35 that has pins that engage in a hole in each of the parts. When the tool 35 is actuated to align the recesses and balls 23 disengage recesses 22 rotation of nut 18 causes member 19 to force a tool holder from spindle 10. When a new tool holder is positioned in the spindle, nut 18 is merely screwed up so that member 19 pushes the tool holder into the spindle. In an alternative embodiment, Fig. 3, recesses 22 are in a flange integral with the spindle and plungers 39 are in bores 38 in the nut 18. Ring 25 has inclined recesses 43 which cooperate with inclined wall 42 of each plunger.