baber/WOPTO huggingface dataset:
Patent GB-1191641-A (GB)
Title: Improvements in Governors for Diesel Engines
IPC: F02D31/00
Filed: 1967-05-19
Abstract: 1,191,641. Diesel engine control computation. ROBERT BOSCH G.m.b.H. 19 May, 1967 [20 May, 1966], No. 23278/67. Heading G4G. [Also in Divisions F1, G1 and G3] To prevent excessive speeds and stalling of a diesel engine, the quantity of fuel injected per cycle into the engine, normally determined by accelerator pedal 36 (Fig. 1), is controlled at high and low engine speeds by the outputs from two non-linear circuits 45, 46 whose inputs are derived from a tachogenerator 10 driven by the engine. Under normal conditions i.e. those within the curve of Fig. 3 for which H represents the stroke of the injection pump and n the engine speed, solenoid 13, controlling the position of a rod 12 in the injection pump 11, is energized by the output of amplifier 24 fed with the voltage from the slider 37 of potentiometer 39 mechanically connected to pedal 36. Prevention of stalling.-When the engine is started, switch 77 is closed and at low engine speeds the voltage on the collector of transistor 73 of circuit 45 is higher than that on slider 37, diode 49 is conductive, supplying a relatively high voltage to amplifier 24 to adjust rod 12 to a position providing a large starting stroke H s . When the idling speed n1 is reached, switch 77 is opened by a centrifugal governor or electronically and the voltage supplied by circuit 45 is reduced, resulting in a decreased engine stroke H 1 , the diode 49 only remaining conductive while the voltage across transistor 73 is higher than that on slider 37. During the normal running of the engine, the diode 49 will become conductive at points along the curves 99, 100 (Fig. 3), dependant on the position of the pedal 36, to increase the injection stroke. Prevention of excessive speeds.-If a large stroke is requested by pedal 36 with a light engine load, the voltage at slider 37 is higher than that across transistor 55 of circuit 46, and diode 50 becomes conductive whereby, since circuit 46 has a low internal resistance compared with circuit 41, the input to the amplifier 24 is limited to the voltage across transistor 55. This voltage is arranged to vary as shown by curves 95, 96, 97 of Fig. 3 by the sequential change of state of diodes 67, 64, 60 with increase of voltage from the tachogenerator 10. The voltage at slider 37 may be made dependant on pedal position and also engine speed by circuit modifications (Figs. 4, 6, not shown).
Patent GB-230510-A (GB)
Title: Improvements relating to apparatus for the transmission of wireless signals
IPC: H03C1/00
Filed: 1923-09-18
Abstract: 230,510. Shannon, D. S. B. Sept. 18, 1923. Combined transmitting and receiving arrangements; aerials and like radiating and receiving conductors.-Receiving and transmitting systems adapted to operate without the use of an extended aerial system, are characterized by the provision of two or more series condensers shunted across the main oscillatory circuit which takes the place of the ordinary aerial. Fig. 1 shows a combined receiving and transmitting installation. The main inductance 1 and capacity 8 are shunted by two condensers 13, 14, the earth lead 15 being connected as shown. The input circuit 17, 20 of the receiver is similarly shunted by the condensers 21, 22 the midpoint being earthed through a lead 23, as before. The two earthing points may be connected together through a lead 24 and condenser 25 in order to increase the effective size of both oscillatory circuits and to stabilize the system. Or the lower ends of the inductances may be connected by a lead 26 earthed at 27. The complete installation may be operated from a combined microphone and receiver mounted on a common holder as in an ordinary telephone head-set, the transmission and reception circuits being energized as required by means of a small switch located in the hand grip. Two shunting condensers 13, 14 or 21, 22 may be replaced by a single three-plate condenser the middle plate of which is earthed. Specification 217,259 is referred to.
Patent GB-699553-A (GB)
Title: Improvements in and relating to planing machines
Inventor: MITCHELL ARTHUR
IPC: B23Q5/58
Filed: 1951-10-08
Abstract: 699,553. Planing. STIRK & SONS, Ltd., J. Oct. 24, 1952 [Oct. 8, 1951], No. 23352/51. Class 83 (iii). To prevent the reciprocating table of a planing - machine from becoming dislodged from the machine bed if it has overshot and disengaged its racks from the driving gear, an adjustable stop on the table contacts a buffer ram 13 and forces hydraulic fluid along ducts 16, 18 and past a restrictor valve 20, which is loaded by a strong adjustable spring 21, into a reservoir 24. A pump 30, preferably of the piston type and hand-operated, draws fluid from the reservoir through a duct 32 and a spring- loaded non-return valve 33 and delivers it through a non-return valve 35 and the duct 16 in the ram cylinder for moving the table back again beyond the end of its cutting stroke so that it re-engages its driving gear. The ram is finally returned manually to its normal position, which may be indicated by markings, after opening a bleed screw (not shown), connecting the cylinder to the reservoir.
Patent GB-742279-A (GB)
Title: Improvements in synthetic resinous compositions and in articles of clothing coated therewith
Inventor: CALDWELL JOHN RICHARD
IPC: C09D4/06
Filed: 1953-08-24
Abstract: A synthetic resinous composition is prepared by polymerizing in an aqueous medium at a temperature of from about 45 DEG  to about 120 DEG  C. in the presence of a water-soluble peroxy-type catalyst from about 25 to about 80 parts of an acrylic ester having the formula <FORM:0742279/IV(a)/1> wherein R1 represents a hydrogen atom or a C1-C4 lower alkyl radical and R2 represents C1-C6 alkyl radical, while in admixture with from about 75 to about 80 parts of a vinyl polymer having hydroxy radicals which can be depicted as follows: <FORM:0742279/IV(a)/2> wherein R3 represents a lower alkyl radical, x represents the percentage of this polymer having groups based on vinyl alcohol, and 100-x represents the percentage based on a lower alkanoic acid ester of vinyl alcohol, the numerical value of x being from 80 to 100, the total weight of acrylic ester and vinyl polymer being 100 parts.  The acrylic esters may be polymerized alone or in admixture with one another or with other monomers such as vinyl acetate, vinyl chloride, styrene, acrylonitrile, or methacrylonitrile, provided that the mixture contains at least 50 mol. per cent of an acrylic ester of the formula indicated. Peroxy catalysts specified are hydrogen peroxide, peracetic acid, alkali metal and alkaline earth metal peroxides, and ammonium and alkali metal perborates, percarbonates, perphosphates and persulphates.  The aqueous polymerization medium may also contain an emulsifier such as the sodium salts of dodecyl, octadecyl and oleyl sulphates.  After preparation the polyvinyl alcohol component of the compositions may be hardened by treatment with agents such as oxalic, sebacic, succinic, maleic, tartaric, malic, suberic, phthalic and terephthalic acids, aldehydes containing 1 to 8 carbon atoms, e.g. formaldehyde and succinaldehyde, 2:3 - dihalogenated - 1:4 - dioxane, alpha:alpha - dichlorodiethyl ether, acid chlorides of aliphatic and aromatic polycarboxylic acids containing from 2 to 12 carbon atoms, trimethylol nitromethane, methylol derivatives of melamines, urea-formaldehyde resins, zirconium salts, diammonium phosphate, ammonium bichromate, and phosphoric acid.  The acrylic ester may be crosslinked either during polymerization by copolymerizing with a divinyl compound such as divinyl benzene, allyl acrylate, and diallyl succinate, adipate, or phthalate, or after polymerization by copolymerizing with a monomer such as beta-chloroethyl vinyl ether and heating the product with zinc or lead oxide.  The compositions are used in the production of films and fibres, water-based paint, e.g. in admixture with titanium dioxide, and in the treatment of fabrics and leather.
Patent GB-599865-A (GB)
Title: Method of fabricating piezoelectric crystals
IPC: H03H9/10
Filed: 1945-09-11
Abstract: 599,865. Piezo-electric crystals. BRUSH DEVELOPMENT CO. Sept. 11, 1945, No. 23380. Convention date, Oct. 20, 1944. [Class 40 (v)] A piezo-electric crystal element has its edges and corners rounded before coating with liquid material which subsequently hardens to form a hard moisture-proof coating. This ensures that the coating is as thick at the edges and corners as it is on the faces of the element. Where the element is intended to form part of a compound crystal assembly, the edges and corners of one face only are rounded. Fig. 4 shows an apparatus for treating the crystals which comprises a rotating horizontal work table 1 formed with a large number of small perforations 5, and having clamped to it a masking disc 9 formed with apertures 11 for holding crystals to be treated. Adjustably arranged above the work table are a rotating milling cutter 7 and rotating steel or brass wire brushes 20, 21. Beneath the work table are arranged ducts 27, 28, 28<1> leading to an exhaust pump, the open ends of the ducts being in airtight contact with the underside of the work table at points beneath the milling cutter 7 and brushes 20, 21 so as to hold the crystals in place during the milling and brushing operations. The brushes are set at such an angle that two edges of the crystal are rounded by each brush. The crystals are removed at a point where they are not held in place by air pressure, and are coated with shellac or chlorinated rubber.
Patent GB-729881-A (GB)
Title: Improvements in and relating to refrigerator shelves
Inventor: GRAHAM DOUGLAS HARRY
IPC: F25D25/02
Filed: 1953-08-25
Abstract: 729,881. Refrigerators. INTERNATIONAL REFRIGERATOR CO., Ltd. May 14, 1954 [Aug. 25, 1953], No. 23451/53. Class 29. A shelf for a refrigerator is moulded from a polymerisable material or cast from a metal in one piece and comprises an outer frame 1, an impervious recessed part 2 acting as a drip tray, and transverse bars 3 acting as the goodssupporting shelf.
Patent GB-408861-A (GB)
Title: Improvements in or relating to electric fans
IPC: F04D25/10
Filed: 1933-08-23
Abstract: 408,861. Screw fans. MARELLI & CO., SOC. ANON., E., 22, Corso Venezia, Milan, Italy. Aug. 23, 1933, No. 23496. Convention date, March 29. [Class 110 (i).] Screw fans 5, 6, are mounted on a motor shaft 4 to produce currents of air in opposite directions. The motor is rotated or oscillated about a vertical axis by a telescopic shaft 12 which is driven from the shaft 4 and drives a pinion in mesh with a toothed wheel fast to the pedestal 9.
Patent GB-1398597-A (GB)
Title: Drop dispenser
IPC: B65D47/18
Filed: 1972-05-18
Abstract: 1398597 Drop dispenser ROUSSEL LABORATORIES Ltd 16 May 1973 [18 May 1972] 23519/72 Headings B8T and B8N A drop dispenser has a pliable teat held on to a container by means of a push-on collar and also a push-on cap which shrounds the teat and includes a stopper to seal the teat outlet. Flange 4 of teat 3 is held in contact with the rim of bottle 1 by plastics collar 5 which snaps on to the bottle neck by means of projections 2 and 6 on the bottle 1 and the collar 5 respectively. Cap 7 snaps onto the upper part of the collar 5 and has a closed end which is a good fit on the outside of the teat 3 along the common tapered surface 17 and also a tapered stopper 15 which seals the tapered outlet 16 of the teat 3. The lower annular part 10 of the cap 7 has a groove 12 which is a tight snap fit on a bead 11 on the teat 3 and is attached to the body of the cap 7 by a tear strip 13 with tab 14. After removal of the tear strip 13, the upper part of the cap 7 is located on the teat 3 by bead 9 snapping into groove 8. A second embodiment shows a similar assembly but with a shorter collar ending just above the flange 4 of the teat 3 and also a small annular clearance around the teat 3 along its length between the flange 4 and shoulder 7.
Patent GB-923434-A (GB)
Title: Improvements in or relating to film drive mechanisms for photographic cameras
Inventor: WATTS REGINALD
IPC: G03B41/02
Filed: 1960-07-06
Abstract: 923,434. Film-feeding mechanism for imagemovement compensation aircraft cameras. MINISTER OF AVIATION. June 28, 1961 [July 6, 1960], No. 23580/60. Class 98 (1). In a continuous feed film drive mechanism for a camera, the film is looped at the supply side of the exposure area around fixed guide means and guide means on a moving carriage, which extends across the exposure area, and also is looped around guide means on the carriage and fixed guide means at the take-up side of the exposure area, and the carriage is itself engaged with the film and moved with and by it to shorten the take-up loop and lengthen the supply loop and so reduce the speed of the film across the exposure area during each exposure and the carriage is then disengaged from the film and moved during the interval between exposures in the reverse direction relatively to the film by drive means so as to shorten the supply loop and lengthen the take-up loop and so increase the speed of the film across the exposure area between exposures. Preferably the shutter operating means and the means for effecting the reverse movement of the carriage between exposures are in driving connection with a constant speed film drive roller on the take-up side of the take-up loop forming guide on the carriage. As shown, the supply loop is formed by stationary roller 13 and rollers 14, 15 on the carriage 21 and the take-up loop is formed by rollers 16, 17 on the carriage and a constant speed drive roller 18. The film 11 is clamped by a back plate 25 moved by a pin cam 29 against a glass plate 24 through which exposure is effected and when so clamped moves the carriage to the left over supporting rollers 23, exposure taking place during this movement. The reverse movement of the carriage is effected by the anticlockwise-driven cam 30, the cam 29 meanwhile raising the plate 25, such a movement having just been completed in the drawing. With the arrangement shown, the film speed during exposure is onethird of that around the roller 18 and when applied to an image movement compensation camera for aerial photography provides a coverage overlap between successive pictures of 60%.
Patent GB-1268318-A (GB)
Title: Improvements in or relating to a seal for piston rods and pistons of high pressure machines
IPC: F16J15/26
Filed: 1970-05-15
Abstract: 1,268,318. Seals. BORSIG G.m.b.H. 15 May, 1970 [22 May, 1969], No. 23585/70. Addition to 1,230,114. Heading F2B. In piston or piston rod sealing means as described in the parent Specification in which each sealing unit comprises a sealing ring 9 supported by a split supporting ring 5, the sealing ring has a gap 9a therein formed between parallel flat end surfaces 9b, 9c, one 9b of the surfaces being inclined at an angle α of between 20 and 60 degrees to the tangents 11 at the inner circumference of the ring at the intersection with the surface 9b. The ring 9 is surrounded by an inwardly split ring 10, the gap 10a in the ring being diametrically opposite the gap 9a.
Patent GB-1440592-A (GB)
Title: Filtering method and apparatus
IPC: B01D29/09
Filed: 1973-05-17
Abstract: 1440592 Separating particles from fluid; centrifugal separators DRESSER INDUSTRIES INC 17 May 1973 [12 June 1972] 23628/73 Headings BID BIT and B2P An apparatus for separating particles from fluid (one embodiment of which is shown) comprises rotatable housing 26 carrying substantially radial screen assemblies 24, inlet duct 18 for supplying fluid to a central portion of the housing, ducts 42 for discharging concentrate which has passed under centrifugal action along the screen assemblies 24, to common duct 44 and ducts 36 for discharging filtered fluid to container 40. Screen assemblies 24 comprise screens 28, 30 supported by screens 54 and grooved backing plate 50 (Fig. 3). To separate light (e.g. oil) and heavy particles from the fluid, the apparatus of Fig. 1 is modified to include a duct (130, Fig. 5A, not shown) which passes through. the inlet duct (136) and communicates with a central portion of the housing such that in use the light particles are discharged through duct (130). The apparatus may comprise horizontal screens (Fig. 7, not shown) or frustoconical screens (Fig. 9, not shown). The screens may be made of woven stainless steel, cellulose acetate, polyethylene or nylon. The apparatus may be used to separate particles from sewage, protein from whey, bacteria from fluid or ash from air.
Patent GB-490631-A (GB)
Title: A method of making rubber heels and soles, and articles of footwear fitted therewith
IPC: A43B13/12
Filed: 1937-08-30
Abstract: Indiarubber soles and heels or the sheets of vulcanized or cr<\>zepe rubber from which they are to be made, are stretched until the non-reversible elastic properties have disappeared.  A permanent extension in length is produced.
Patent GB-719751-A (GB)
Title: Metallic platform, preferably made from light metal, for lorries and other vehicles
IPC: E04B5/10
Filed: 1952-09-22
Abstract: 719,751. Vehicle floors. SOC. ANON. POUR L'INDUSTRIE DE L'ALUMINIUM. Sept. 22, 1952 [Sept. 26. 1951], No. 23725/52. Class 108(1) Floor elements 2 which may be tongued and grooved are provided with ribs 4 having wedge-shaped feet 5 engaged by clamping pieces 3 which clamp the feet 5 together on to the chassis longitudinals 1. The elements are bowed upwardly prior to fixing. Specification 649,309 is referred to.
Patent GB-958144-A (GB)
Title: A baby's diaper of cellulosic material
IPC: A61F13/15
Filed: 1961-06-30
Abstract: 958,144. Surgical dressings. S. WETTERGREN. June 30, 1961 [July 6, 1960], No. 23734/61. Heading A5R. [Also in Division A3] A baby's diaper comprises a core 1 of creped cellulose wadding or ground cellulose enclosed by a wrapper 2 consisting of one or more folded sheets of cellulose wadding and an outer openmesh knitted tube 3. A thin fleece of corded cotton fibres is provided on the outer side of the outer sheet of the wrapper 2. The wrapper and core may be impregnated with a bactericide, e.g. a quaternary ammonium compound or a phenolic compound isolated from coal-tar. The ends of the diaper may be compressed to form a firm edge comprising the core, wrapper and outer tube.
Patent GB-981918-A (GB)
Title: Improvements in or relating to fuel cell electrodes
IPC: H01M4/86
Filed: 1962-06-20
Abstract: 981,918. Fuel cells. LEESONA CORPORATION. June 20, 1962 [July 26, 1961], No. 23829/62. Heading H1B. A fuel cell electrode comprises a non-porous matrix having fibrous material pervious to gases and liquids extending from face to face thereof and, if the matrix is non-conducting, a conductive metal layer on one surface.
Patent GB-754503-A (GB)
Title: Feed drive mechanism with backlash eliminator
IPC: F16H25/20
Filed: 1954-08-17
Abstract: 754,503. Screw and nut gearing. GAM. BIN & CIE. Aug. 17. 1954 [Aug. 21, 1953], No. 23905/54. Class 80(3) For eliminating backlash in screw and nut gearing the nut is formed in two halves 11, 12 .housed in bores 13, 14 of parts 15, 16 of a supporting member. The nut halves 11 12 are prevented from rotating by keys 17, 18 and are adapted to be moved axially towards or away from each other by means of a nut member 23 engaging threads of slightly different pitches on the inner ends of the nut halves. The nut member 23 is provided with holes for adjusting by a tommy bar and lock nuts 25, 26 serve to lock the parts 11, 12 in any adjusted position in the member 15. 16. The adjusting and lock nuts may be operated remotely through spindles 34, 35, 36 and worms 31, 32, 33 gearing with teeth on the peripheries of the nuts as indicated in the lower half of the Figure. In the arrangement shown the screw 3 is rotated and the nut is non- rotatable but the screw could be fixed and the nut assembly adapted to be rotated.
Patent GB-1494931-A (GB)
Title: Dirty liquid storage bucket for a steam vacuum cleaner
IPC: A47L11/34
Filed: 1975-06-03
Abstract: 1494931 Liquid storage bucket for steam vacuum cleaners PARISE & SONS Inc 3 June 1975 [3 June 1974] 23959/75 Heading A4F A dirty liquid storage bucket for a water- and detergent-spraying vacuum cleaner for cleaning rugs and other floor surfaces, comprises mating top and bottom cup-shaped members 22, 26 mounted together with an air-tight seal, e.g. provided by O-ring 40, a riser tube 20 communicating the interior of the bucket with an aperture 24 in the base of the member 22 and extending above the top thereof, the upper end of the riser tube 20 being received in an aperture 44 in a strut 42 extending across the top member 26, and an L-shaped connector 30 extending through the side wall in the member 26 such that when a vacuum pump is connected to the riser tube 20, dirty liquid and air are drawn in through the pipe 30 and impinge on the inside of the top member 26, the liquid running down the sides of the bucket past an annular shelf 38 to collect in the bottom of member 22 without entering the riser tube 20. The top member 26 may be of moulded transparent plastics material.
Patent GB-861623-A (GB)
Title: Coin selecting device and apparatus
IPC: G07D3/04
Filed: 1959-07-13
Abstract: 861,623. Coin sorting. SPINELLI, R. July 13, 1959, No. 23965/59. Class 27 A coin sorting device has a tapered channel 2 of insulating material in which a coin 1 of the required diameter bridges contacts 6, 7 and closes the circuit of an electromagnet 11 the moving core 13 of which expels the coin through an aperture 10 into a collecting box. The core 13 is spring-returned and has a disc 16 attracted by the fixed core 12 and a nose 14 of insulating material for engaging the coin. One of the contacts is adjustably held in position by a screw 8. A number of channels, one for each type of coin to be sorted and of decreasing width, can be arranged vertically one above the other.
Patent GB-860387-A (GB)
Title: Improvements in writing instrument balls
IPC: B43K1/08
Filed: 1957-07-29
Abstract: The writing ball of a ball-point pen (see Group XV), is made by compacting either nickel coated or cobalt coated tungsten carbide particles, sintering the mass, and finishing by grinding.  In a modification, uncoated tungsten carbide particles are compacted and sintered, and the mass is impregnated with a material which is more wettable to ink so that the surface of the ball, and the inner surfaces of the voids within the ball, are coated.  The size of particles used is five microns or less in diameter.
Patent GB-692806-A (GB)
Title: Improved gear grinding machine
IPC: B23F5/02
Filed: 1950-10-02
Abstract: 692,806. Gear-grinding. KLINGELNBERG, G., JAEGER, G., KLINGELNBERG, H. W., and BAUM, C., [trading as KLINGELNBERG SOEHNE, W. F.]. Oct. 2, 1950 [April 20, 1950], No. 24038/50. Class 83 (iii). [Also in Group XXIII] A gear-generating machine, in which the work 20 performs the rolling movement, comprises two tools 1, 2 fitted with grinding segments 11, 21 and intermeshing so that one machines the left, and one the right, face of a tooth-space. The tools are carried on heads 14 adjusted angularly by scales 16. The toolshafts 3 are rotated by a motor 10 driving a shaft 12 which includes a clutch 13 to enable the tools to be correctly meshed. The tools are mounted by three bearings 4 ... 6, the diameter of the bearing 5 being greater than the distance between the other two bearings. The heads 14 are adjustable to and from each other by a screw 18 and to and from the work by a screw 19. The work 20 is carried on an adjustable head 21 supported on a cradle 31 which is rocked about a stationary shaft 30 by a worm 29. The worm 29 and work 20 are rotated by a motor 23. The diameter of the tools is such as to obviate the need for traverse. For grinding spur or helical gears, the work 36, Fig. 5, is vertically adjustable on a slide 37 traversed along a member 46 by a screw 41. The screw 41 and the work are rotated by a motor 39. The member 46 is angularly adjustable about a pivot 43. The grinding surfaces may be dished to modify the area of tooth contact.