baber/WOPTO huggingface dataset:
Patent GB-1445759-A (GB)
Title: Copying machine of the diazo type
IPC: G03B27/26
Filed: 1973-12-04
Abstract: 1445759 Automatic control of temperature MITA INDUSTRIAL CO Ltd 4 Dec 1973 56044/73 Heading G3R In a copying machine of the "diazo"type having a transparent cylinder containing a heat generating light source for printing a diazo copying sheet, the temperature of the cylinder is continuously sensed and at any deviation above a predetermined value a fan motor is switched ON or its speed is increased and vice versa, to provide a cooling air-flow rate therefrom which will maintain the cylinder temperature within a predetermined range. The tempdector may be a thermistor, a thermocouple or a thermal switch. The copying machine Fig. 1, comprises a rotatable glass cylinder 2 divided into two chambers by a reflector plate 4. One chamber contains a lamp (e.g. mercury) for printing. Cold air is passed through the other chamber from one end to the other by a fan (28) Figs 2A, 3A (not shown). A belt 11 is arranged to transport a superposed "original" sheet A and a photo-sensitive sheet B around the cylinder, discharging both on to a plate 13. After manual separation the sheet B is fed to a developing zone D. In this zone are two developing tanks 16, 16' having openings 17, 17' respectively. The tank 16 has an evaporation heater 19 and a plate 18 for evaporating aqueous ammonia. Wire screens 20 prevent the sheet B entering the tanks, the sheet being developed by ammonia gas and steam. After development the sheet B is discharged via a guide-plate 21 to a receiver 22. Ammonia gas is exhausted from the apparatus by a fan 31, 32. A thermostatic switch 34 Fig. 1 and Fig. 3B, engages the outer surface of the transparent cylinder and comprises an outer cylinder (36) Fig. 4B (not shown). With increasing temperature detected, the cylinder 36 extends and a pin A is brought into contact with a base portion B. When the detected temperature exceeds a predetermined level the cylinder 36 is further elongated and contacts a and b move apart as in Fig. 4A. A wiper 40 e.g. of felt, cleans the surface of the transparent cylinder engageable by the thermostat switch 34. A second temperature sensor 38 thermally coupled to the cylinder surface by a resilient member 35, may be provided as a safety precaution in case thermostat switch 34 fails, the sensor operating to switch the fan motor to full speed and give a visual warning if excessive temperature is detected, as described with reference to Figs. 5D and SF (not shown). In Fig. 5A, when the thermostat 34 contacts open, a relay R is de-energized and relay contacts c-a are closed causing the fan motor M to run at full speed. When the temperature falls below the predetermined value, the contacts a-b of 34 engage thus energizing the relay which switches a resistor r in series with the motor to reduce its speed. There may be a plurality of temperature detectors each operative within a respective temperature range, particularly for colour printing; or there may be a plurality of temperature detectors operative in the same temperature range.
Patent GB-1342540-A (GB)
Title: Sulphonic acid esters their preparation and their medicinal use
IPC: A61K31/255
Filed: 1971-12-08
Abstract: 1342540 Sulphonates BAYER AG 8 Dec 1971 [9 Dec 1970] 57014/71 Heading C2C Novel compounds (I) of the general formula where A and A<SP>1</SP> are H or an aliphatic radical, B is a divalent aliphatic radical, and X, Y and Z are H, halogen, -CN, MeSO 2 -, -SCN, -OCN, - NCO or -N 3 , provided that B is not a straight or branched C 1  to C 6  alkylene radical when X, Y, Z, A and A<SP>1</SP> are all H, are made by reacting the appropriate di-iodide with a compound of the general formula where M is a cation which forms a sparingly soluble iodide and n is 1 or 2. Pharmaceutical preparations acting as cytostatic agents contain (I) as active ingredient. Administration may be orally, topically or parenterally.
Patent GB-1191548-A (GB)
Title: Core Barrel Inner Assembly for Geological Testing and Exploration.
IPC: E21B25/02
Filed: 1968-12-04
Abstract: 1,191,548. Boring earth &c. MINDRILL Ltd. 4 Dec., 1968 [6 Dec., 1967], No. 57600/68. Heading E1F. A core drill has a core barrel 26 rotatably mounted on a spindle 13, 14 slidable within a casing 12, upward movement of the spindle and barrel relative the casing 12 being prevented during lowering of the drill in the borehole so that movement of the barrel does not expose the core lifter (not shown). During lowering of the drill, balls 36 carried by the spindle engage shoulder 43 in the casing to prevent the upward movement. Drilling fluid supplied to the spindle moves a piston 28 downwardly to free the balls and permit the upward movement of the barrel, openings 42, 44 tying aligned so that the fluid passes to the bit (not shown).
Patent GB-1425076-A (GB)
Title: Freezing food particles
IPC: F25D25/04
Filed: 1973-12-13
Abstract: 1425076 Conveyer belts K L HARDY 13 Dec 1973 [11 May 1973] 57873/73 Heading B8A [Also in Division F4] Apparatus for freezing food products in a conveyer belt-type freezing tunnel comprises a freezing zone disposed within a chamber 12 and having fans 24 for passing air over evaporators 22; an endless foraminous conveyer belt 14 extending between a device 20 for introducing food on to the conveyer and an outlet conveyer 26; and support means for separating the conveyer into a first downwardly extending portion and a second horizontal portion. In operation of the apparatus, the angle of the conveyer belt is such that the food products advance faster than the conveyer in the first portion. The support frame for the first portion includes pivoting means adjacent the horizontal portion of the conveyer for altering the angle of the slope. Heated fluid passes through tubular members to prevent icing up of the support frame. The endless conveyer belt 16 is constructed from alternating right-hand and left-hand metal wire spirals 28, interconnected by flat metal connecting strips 30. An adjustable idler sprocket 42 is provided for controlling the amount of slack in the belt 16.
Patent GB-1214149-A (GB)
Title: Electrostatic copying process
IPC: G03G15/30
Filed: 1967-12-20
Abstract: 1,214,149. Electrostatic copier. CANON CAMERA CO. Inc. Dec.20, 1967 [Dec.24, 1966] No.57930/67. Heading G2H. In an electrostatic copying process, an image is formed on an insulating layer above a photoconductive layer on a photo-sensitive plate, liquid developer containing a toner is applied to the plate, and the developed image transferred by line contacting a sheet of copying material whilst applying a voltage between the copy material and the plate, and the toner is then fixed on the copy material. As shown in Fig.1, a photo-sensitive drum 2 is charged by a D. C. corona device 3, and exposed, at an opposite polarity or A. C. corona device 4, to an image of an original O moving synchronously with the drum, the image being illuminated by a tungsten lamp 5 for increased contrast and being developed at 6 and transferred at 7 to copy paper P, a voltage of polarity depending on the conductivity of the photo-sensitive layer being applied, from source 15 via change over switch 17, between the drum 2 and transfer roller 16. The image is fixed by device 32, and drum cleaned by brushes 8 and dried by blower 9. The drum 2 consists, Fig.2 (not shown) of a plastics insulating layer (2a) on a photo-conductive layer (2b) on a conducting base (2c) and liquid developer (19) is applied to the insulating layer (2a) by a roller (21) a bias voltage being applied between roller (21) and drum (2). Alternatively, developer (19) is applied, Fig.3 (not shown) by a sponge or felt layer (24) on a conductive roller (23), or, Fig.4 (not shown) a block (26) of porous material is dipped in the developer, and its upper surface is placed against the drum (2), or developer may be sprayed on to the drum by a siphon (27), Fig. 5 (not shown). In a second embodiment of the image transfer process, Fig.10 (not shown) guide roller (16) is driven by a roller (33) through a conductive belt (34) and a roller (35) pushes copy material (P) at the same speed as the drum (2). The photo-sensitive plate may be a belt or a plane plate.
Patent GB-1240137-A (GB)
Title: Current stabilizing electrical circuit
IPC: G05F3/18
Filed: 1968-12-06
Abstract: 1,240,137. Transistor amplifying circuits. RCA CORPORATION". 6 Dec., 1968 [8 Dec., 1967], No. 57998/68. Heading H3T. [Also in Divisions G2-G3] A stabilized current source for biasing a transistor comprises a resistor having a value dependent on environmental temperature and a predetermined number of forward biased semiconductor junction voltage drops serially coupled between one end of the resistor and a point of reference voltage, the variation with temperature of the voltage drops compensating the current variations caused by variation of the resistor, whose other end is connected to a voltage supply point. In Fig. 4, the resistor comprises the circuit connected between 12, 20, the voltage drops comprise a number of rectifier-connected transistors 22, 24-24n, the reference voltage is ground terminal 14, and the whole arrangement is used to bias a transistor 11 for amplifying signals applied thereto via a capacitor 19 and a terminal 21. Fig. 5 is similar to Fig. 4, except that the voltage drops are provided by a transistor feedback stage 200 of the type disclosed in Specification 1,229,274. The components all form part of an integrated circuit and a discussion is given for a monolithic silicon structure of the method and equations for determining the number of voltage drops. An avalanche diode 334 provides compensation for variations of the voltage supply 12. The remaining members of the circuit between points 12, 20 regulate the current through the diode 334 to clearly define its reverse-breakdown voltage and the charges thereof due to temperature variations. The circuit between points 12, 20 may be replaced by a single temperature responsive resistor, Figs. 1 and 2 (not shown).
Patent GB-1473291-A (GB)
Title: Communication systems
IPC: G08B26/00
Filed: 1974-04-26
Abstract: 1473291 Electric selective signalling L W BRIGGS E L JONES and H R McRAE 26 April 1974 [29 Jan 1973] 59986/72 Heading G4H A communication system comprises a central station coupled by a common line to a plurality of transponders which each send, in response to the receipt of a voltage change of sufficient magnitude, a coded signal after a delay peculiar to the transponder. The central station is arranged to supply direct current via the common line to provide all the power for the transponders, to send an interrogatory signal in the form of a substantial voltage change across the line, and to identify signals from the transponders according to the delay of their replies. Each transponder (Fig. 1, not shown) comprises a binary code generator (7) triggered by the end of the quasi-stable output from a monostable (4), each transponder also including a sensor (e.g. for fire or burglary) operative to disturb or inhibit operation of generator (7). The central station (Fig. 2, not shown) is arranged to execute, after each interrogatory signal, a timing cycle during which signals from the transponders are directed to respective latches (51, 52, ...) according to their time of arrival, gates (41, 42, ...) being opened sequentially by the outputs from timers (30, 31, ...). The contents of the latches are compared with corresponding reference codes from generators similar to those in the transponders, any lack of correspondence therebetween causing an error signal to be generated. If two error signals occur within a given interval then an alarm is actuated.
Patent GB-1373128-A (GB)
Title: Electrophotographic materials and processes
IPC: G03G5/14
Filed: 1971-12-24
Abstract: 1373128 Electro-photographic element MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 29 Dec 1971 [25 Dec 1970] 60604/71 Heading G2C An electro-photographic plate comprises a layer 1 including an organic photo-conductive insulating material, a layer 2 including amorphous selenium, a layer 3 including a polyimide and an electrically conducting backing layer 4. Preferably the polyimide is the product of condensation between the dianhydride of pyromellitic acid and diamino-diphenyl ether or an aromatic diamine. The polyimide layer is preferably less than 15 Á thick. In a method of manufacturing the plate, a base, e.g. aluminuim, brass or steel plate, or aluminium or Cu 1 coated polyester, is cleaned and coated with a solution of the polyimide and heated to remove solvent. Preferably the polyimide layer is aged by heating at 100-150‹C for 10-20 hours. The surface is cleaned by corona discharge and coated with selenium optionally including tellurium or sulphur, by vaccum deposition. The photo-conductive layer may be poly N-vinyl carbozole in a poly carbonate binder.
Patent GB-698230-A (GB)
IPC: H02K21/22
Abstract: 698,230. Ignition magnetos. SMITSVONK N.V. Feb. 15, 1952 (Feb. 15, 1951], No. 4054/52. Class 35. [Also in Groups XXVII and XXXVII] The stationary armature-coil 5 of a fly-wheel magneto energizes the condenser 9 of a lowtension ignition system (see also Group XXVII) through a switch device 6, 7 and 8 (see also Group XXXVII), the stationary contacts 7 and 8 of which are adjustable for timing purposes. A cam 11 is shaped so that the contact 6 is moved from one stationary contact to another to break the condenser charging circuit when the voltage in coil 5 is, for example, a maximum The hollow fly-wheel interior houses the armature, switch device and the condenser. In a modification, the stationary contact may be dispensed with.
Patent GB-755092-A (GB)
Abstract: 755,092. Cathode materials and processing. GENERAL ELECTRIC CO. Nov. 25, 1954 [Dec. 11, 1953], No. 34204/54. Drawings to Specification. Class 39 (1). In a gaseous electric glow discharge tube having two cold electrodes coated with an emissive mixture containing barium oxide and strontium oxide, the difference between the breakdown voltage of the tube when placed in an opaque enclosure and the breakdown voltage when the tube is subject to light or other radiation is reduced and the speed with which full ionization is achieved within the tube is increased by adding thorium oxide to the emissive mixture. Suitable molecular proportions are 15 to 40 per cent ThO 2 , 10 to 55 per cent BaO, and the balance SrO, preferred proportions being approximately 23 per cent ThO 2 , 33 per cent BaO and 44 per cent SrO. A glow lamp is described having two nickel wire electrodes coated with the emissive mixture and welded to leads of copper-sheathed nickel iron which are seated through the press of the tube. The gas filling may be neon or argon or a mixture thereof at pressures from 20 to 200 mm. of mercury, for example neon plus 0.8 per cent argon at 30 mm. pressure. The active coating is preferably produced by applying to the electrodes a mixture of barium and strontium carbonates with thorium oxide in a binder such as nitrocellulose dissolved in amyl or butyl acetate, exhausting the tube and then heating in an electric induction furnace to decompose the carbonates to the oxides. After sealing off, the work function of the electrodes may be further reduced in known manner by a discharge produced with steep wave-front high-frequency oscillations. Curves are given showing the variation of breakdown potential and dynamic conductance of the tube with varying percentages of ThO 2  and BaO in the emissive mixture.
Patent GB-2000985-A (GB)
Title: Automotive emission control catalyst and method for making same
IPC: B01J27/13
Filed: 1978-06-28
Abstract: A layered catalyst having significantly improved performance characteristics including greater resistance to poisoning and sintering in automotive exhaust, and comprising an alumina support having a first layer of platinum positioned at the support surface and penetrating the body thereof to a desired depth with a second layer of rhodium or palladium, the second layer being adjacent to the first layer and penetrating the body of the support for a depth beyond that of the first layer, a maximum concentration of platinum being in the first layer together with a mininum concentration of rhodium or palladium and a minimum concentration of platinum with a maximum concentration of rhodium or palladium being in the second layer. The layered catalyst is prepared by impregnation with separate solutions of the catalyst materials, acid treatment of active sites of the support being used to block the sites from the surface through the desired depth of the platinum layer.
Patent GB-2002839-A (GB)
Title: Confining and collecting oil during blow-outs
IPC: E21B43/01
Filed: 1978-07-18
Abstract: The invention relates to means for confining and controlling a blow-out on oil drilling or production rigs. In order to collect the oil discharged during a blow-out a deflector screen (2) is provided over the derrick, which screen is constructed to direct the oil stream into a collecting basin (8), which is separated from the main work site. Thereby there will be sufficient time for the working personnel to get away and to activate shut off valves (4). A shelter 3 in direct communication with the main work site on the rig is provided. <IMAGE>
Patent GB-2004019-A (GB)
Title: Leak repair clamp
IPC: F16L55/18
Filed: 1978-08-08
Abstract: A leak repair clamp for pipe and pipe flanges includes a frame having a plurality of segments 10 fastenable in end-to-end relation around the pipe or flange e.g. 32. Each segment includes spaced parallel annular lips 12, 14, each lip being an integral part of the segment and having a bent tip portion 18, 20 extending toward the matching oppositely positioned tip portion of the opposite lip. The lips extending from the segments thus form an annular recess 16 around the pipe when the segments are connected. An access means 26 is provided in the frame to permit passage of a liquid sealant into the recess <IMAGE>
Patent GB-2009370-A (GB)
Title: Gate valve
IPC: F16K3/18
Filed: 1978-09-27
Abstract: The valve is characterized by a valve housing having inlet and outlet ports 36, 38 therein and a valve carriage 140, 142 movable within the housing from a first, retracted, position to a second, flow-interdicting, position in response to an axially directed force imparted thereto by a valve actuating shaft 42. The valve carriage has valve elements 44A, 44B movable from a first, retracted, position to a second, sealing, position with respect to the valve carriage. The actuating shaft has a collar 168 thereon adapted to cooperate with a block member having a roller thereon. The block is itself movable within the housing with respect to the carriage from a first to a second position. The block has an abutment surface thereon adapted to engage the abutment surface on the collar in a force- transmitting relationship when the block is in the first position to transmit an actuating force imposed on the shaft to the carriage to displace the carriage within the housing from the first to the second position. With the carriage in the second position, the block is in adjacency to a recess defined within the housing and displaces in response to continued application of an actuating force to move out of engagement with the collar and into the recess. With the block received within the recess, continued application of an actuating force is transmitted directly to an actuating wedge 152 to thereby move the elements 44A, 44B from the retracted to the sealing position. <IMAGE>
Patent GB-2004831-A (GB)
Title: Conveyor system
IPC: A22B5/00
Filed: 1978-09-29
Abstract: In order to ease the work involved in slaughtering animals such as sheep in an abattoir and to obtain a pelt and scalp portion in one undamaged piece, a conveyor system is arranged for each animal when stunned to pass down a chute (1) to an endless conveyor (3) having transversely inclined slats (4). A shackle connected to the right hind leg is placed on a shackle rail (11) along which it is moved by an overhead conveyor (12). While on the conveyor (3) the animal is slaughtered and its weasand tied. Towards the end of the conveyor (3) the carcass is lifted away by a rising part of the rail (11). The endless conveyor is driven slightly faster than the overhead conveyor to keep the animal under tension. <IMAGE>
Patent GB-2005981-A (GB)
Title: High protein alveolar foodstuffs
IPC: A21D13/06
Filed: 1978-10-16
Abstract: A foodstuff having an alveolar structure contains at least 1% dry weight of sugar and at least 40% dry weight of protein, said protein comprising at least 50% by weight of casein of particular use in high protein diets. The sugar may be monosaccharide, disaccharide or polyalcohol but is preferably saccharose. Up to 10% of starch may be present. The foodstuff may be formed in a cooker-extruder. Yeast may be added.
Patent GB-2007884-A (GB)
Title: Reference voltage sources
IPC: G05F1/445
Filed: 1978-10-25
Abstract: A reference voltage source comprises a bridge circuit having two avalanche (zener) diodes 1 and 2 connected in its opposite arms and two resistors 3 and 4 connected in the other arms, two operational amplifiers 5 and 6, an a.c.- d.c. voltage converter 17 having an input connected to an output terminal 16 of the source, a d.c. reference voltage setting circuit 18 and a comparator 19 having inputs connected to the converter 17 and to the setting circuit 18. The comparator 19 has an output connected to a non-inverting input 10 (or 21) of the operational amplifiers 5 (or 6). The output of the operational amplifiers 5 and 6 are connected alternately to the output terminal 16 while the inverting inputs are each connected to a respective electrode of a respective one of the avalanche diodes 1 and 2. The reference source provides an amplitude regulated ac square wave, or by using a circuit 60 with a time varying voltage gain, an approximate sinusoid. <IMAGE>
Patent GB-2015294-A (GB)
Title: Noise reduction in colour television signals
IPC: H04N5/21
Filed: 1978-11-17
Abstract: A noise-reduced video output signal 22 has contributions both from the incoming video 10 and from stored video 11 representing the video which arrived one frame or field earlier. The relative contributions of the incoming and stored video vary 54 according to the difference 46 between them, i.e. the motion in the picture, provided that the difference exceeds a preset threshold 50 selected to exclude differences due to noise. To prevent chrominance phase noise which exceeds the threshold from being interpreted as motion the chrominance component is removed either from the incoming and stored signals by filtering, 24, 26, 28 and 32, 34, 36, or from the difference signal. If the difference of the incoming and stored video exceeds a higher preset threshold 72, indicating a large degree of motion, the output video 22 consists of the incoming video alone. <IMAGE>
Patent GB-2037654-A (GB)
Title: Method of sealing joints in a linoleum floor covering
IPC: C09J5/06
Filed: 1979-01-04
Abstract: A method of sealing joints in a linoleum floor covering is characterised by applying a welding cord of hot melt adhesive to the joints, melting this cord by heating with hot air and adhering it to the joints by cooling. The joints usually have a width of 2-3 mm, and the method then involves placing a welding cord of hot melt adhesive of 4mm diameter into the joint, melting the cord with hot air to cause it to flow down into the joint, and after cooling of the cord (whereby the hot melt adhesive solidifies and adheres to the linoleum), cutting away the superfluous material thereof.
Patent GB-2034205-A (GB)
Title: A Crimping and Cutting Tool
IPC: H05K13/04
Filed: 1979-02-02
Abstract: A crimping and cutting tool comprises a pair of relatively movable jaws (17L. 17R) which when closed form a small crimping gap (g1) when a wire is therebetween and a movable cutting blade (161) that wipes the said gap to cut the wire. A handle (132) actuates a pneumatic value (V1) and the tapered end (14A) of a piston (14) acts upon inclined surfaces of the jaws to pivot them to a closed position. The cutting blade (16) is forced in a direction orthogonal to the direction of jaw closure by the piston and a plunger (162). <IMAGE>