baber/WOPTO huggingface dataset:
Patent GB-1517473-A (GB)
Title: Poly(methacrylate esters)with imidazole groups and the method of their preparation
IPC: C08F8/00
Filed: 1976-04-29
Abstract: 1517473 Polymethacrylates containing imidazole groups CESKOSLOVENSKA AKADEMIE VED 29 April 1976 [12 May 1975] 17441/76 Heading C3P A polymethacrylate containing pendant imidazole groups is prepared by reacting the corresponding poly(glycol methacrylate aryl)sulphonate with an imidazole compound or its sodium or lithium salt.
Patent GB-288861-A (GB)
Title: Improvements in or relating to ferrous alloys
IPC: C22C38/18
Filed: 1927-06-30
Abstract: 288,861. Saklatwalla, B. D. June 30, 1927. Alloys.-Iron alloys contain 1-8 per cent. of chromium, 0.5-5 per cent of copper and over 1 but not more than 6 per cent of silicon. Carbon may be present up to 3.5 per cent. Scavenging and refining agents such as aluminium, titanium, and vanadium, may be added. Specification 202,971 is referred to.
Patent GB-567647-A (GB)
Title: Improvements in target sighting stations for use on aircraft
IPC: B64C1/14
Filed: 1942-12-09
Abstract: 567,647. Windscreens. BOULTON PAUL AIRCRAFT, Ltd., and NORTH, J. D. Dec. 9, 1942, No. 17489. [Class 20 (iii)] [Also in Group XXXIII] A target-sighting station on aircraft comprises a flexible transparent shield 2 running in upper and lower guides 3, 4, U-shaped in plan, the curved portions being parts of true circles, and the flexible shield includes a rigid sighting panel 6 of the same curvature as the guides so that it is not flexed as the shield is moved. The sighting panel 6 may be divided vertically so that the two half shields may be separated to form a clear vision opening. The two half shields are movable by gears 9, 10 acting on flexible racks 11, 12 on the shields, the gears being driven through the differential gear shown in Fig. 5. Normally the crown wheel 14 of the differential gear is locked to one of the driving shafts 16, 16a by a clutch 17 and the two half shields are moved together, but by releasing the clutch the clear vision opening may be varied or closed either by hand, or by braking one or other of the driving shafts 16, 16a as the shield is moved, after which the clutch is re-engaged. The gear is driven from a shaft 8 and an eye-piece 5 may be simultaneously traversed by gearing therefrom. An upper dome-shaped transparent panel 7, Fig. 1, may be slidable over the upper guides 3. The observer's eye is at the centre of curvature of the shield so that the sight line is normal to the shield. The shield may be made of the material known under the Registered Trade Mark "Perspex."
Patent GB-593361-A (GB)
Title: Improvements in or relating to super-generative receivers
IPC: H03D11/02
Filed: 1944-09-13
Abstract: 593,361. Valve super regenerative circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Sept. 13, 1944, No. 17544. Convention date, June 25, 1942. [Class 40 (v)] In a super-regenerative receiver for frequency or amplitude modulated signals, the variations in quench frequency caused by variations in the amplitude of the applied signal are converted by a frequency detector into amplitude variations corresponding to the modulation of the carrier. A frequency modulated signal is converted into an amplitude modulated signal by the discriminating action of detuning the input circuit of the super-regenerative detector. In Fig. 1, self-quenching oscillator 3 has loop input circuit 1, 2 tuned, as shown in response curve of Fig. 2, for receiving an amplitude modulated carrier, but detuned for receiving a frequency modulated carrier in order to produce amplitude modulation in the usual manner. The secondary 12 of transformer 10 is tuned by condenser 13 to the quench frequency generated when no signal is received by valve 3. The increase in quench frequency produced by the carrier signal moves the operating point to the sloping sides of the response curve of tuned circuit 12, 13 as shown in Fig. 3, to produce magnified amplitude variations from the variations in quench frequency produced by the original amplitude modulation. In a modification, not shown, tuned circuit 12, 13 is replaced by a band-pass circuit so that small changes in quench frequency due to noise keep the operating point on the flat top of the characteristic in the absence of input signals so minimizing the inter-station noise level. Specification 489,094 and U.S.A. Specification 2,280,530 are referred to.
Patent GB-595938-A (GB)
Title: Improvements in or relating to absorption refrigerating apparatus
IPC: F25B15/10
Filed: 1945-07-10
Abstract: 595,938. Refrigerating. AKTIEBOLAGET ELEKTROLUX. July 10, 1945, No. 17570. Convention date, Aug. 3, 1944. [Class 29] Absorption systems.-Two or more individual streams of absorption solution of different concentrations are used in continuous cycle inert gas systems, each stream having a separate circulating pump and boiler. The main boiler 11 is surrounded by an auxiliary boiler 12 operating at a lower temperature, and weak liquor from the main boiler passes by pipe 32, a triple liquid and boiler vapour heat-exchanger 21 and pipe 31 to the top of the .absorber 30. A baffle 46 in the middle part of the absorber tube causes the enriched liquor to pass by a pipe 33 to an absorber vessel 34 whence it returns to the main boiler through triple heat-exchanger 21, 'pipe 35 and gas bubble pump 36. Relatively rich solution from the auxiliary boiler 12 passes by pipe 42, a second liquid heat-exchanger 41 and pipe 40 to the middle part of the absorber and returns through a pipe 39, vessel 37, liquid heatexchanger 41 and a second gas bubble pump 38 to the auxiliary boiler. Rich inert gas rising through the absorber from the gas heat-exchanger 26 thus contacts first the relatively rich solution flowing through the lower part of the absorber, and the weaker gas contacts the weak solution entering the top of the absorber by the pipe 31. The weak gas passes through gas heatexchanger 26 and pipe 27 to a second gas heatexchanger 25 where it is pre-cooled before entering the low temperature evaporator 24. From the evaporator 24 the gas passes through the gas heat-exchanger 25 to the high temperature evaporator 17 and thence by pipe 28 and gas heatexchanger 26 to the lower part of the absorber. Refrigerant vapour from the main boiler 11 passes by pipe 20, triple heat-exchanger 21 and pipe 19 to condenser 23 supplying the low temperature evaporator 24. Vapour from the auxiliary boiler 12 passes by pipe 13 and rectifier 14 to condenser 15 supplying the high temperature evaporator 17 through a pipe 16. Condensate formed in the vapour passage of the triple heat-exchanger is drained by a pipe 49 to the gas bubble pump 38. A pipe 47 connects the inner conduit of the triple-exchanger 21 with the vapour space of the main boiler 11.
Patent GB-577304-A (GB)
Title: Improvements in and relating to guide bearings for control tubes and the like
IPC: F16C29/04
Filed: 1944-09-14
Abstract: 577,304. Fairleads. BLACKBURN AIRCRAFT, Ltd., and MILLS, A. E. Sept. 14, 1944, No. 17575. [Class 78 (v)] [Also in Group XXXIV] A guide-roller arrangement for a rectilinearly moving rod comprises a fixed cage with a plurality of flexible arms, or spring-loaded pivoted arms, each of which carries a wheel or roller urged into contact with the rod. A cage 1 is formed with three pairs of lugs 2, 2<1> with each pair of lugs 2, 2<1> serving for the pivoting therebetween of the two limbs of a U-arm 6 which has a roller wheel 7 mounted between the two limbs of the arm ; the roller wheels are urged into contact with the rod 10 by a splitspring ring 9 which engages over hook lugs 61 formed on the outer (base) end of the U-arms 6. A strengthening flange 5 extends over the spaces between the lug pairs. The movement of the pivoted U-arms is limited by the wide ends of the arm limbs butting against the base of the cage. The cage and arms may be of a plastics material with an electrically conductive metal reinforcement.
Patent GB-720060-A (GB)
Title: Improvements relating to tethered power-driven mowing machines
IPC: A01D34/00
Filed: 1952-07-12
Abstract: 720,060. Lawnmowers. Ground anchors. PUGH, C. R. V. July 9, 1953. [July 12. 1952] No. 17634/52. Classes 6 (1), 6 (2) and 45. A power driven mowing machine tethered by a cable 11 to an anchorage 10 about which it may travel in a spiral path, comprises jointed front and rear parts 1, 3 constrained by a spring 12 to move angularly in a lateral direction to travel outwards from its constrained spiral path to oppose the inward pull of the cable. As shown in Fig. 1 the part 3 comprises a roller 4 and a seat 9 which may be removable. The spring 12 is connected between a frame 5 and a handle 8 of the mower and the spring tension is adjusted by means of a bolt 31. The rear part 3 may consist of a weighted skid. The anchorage comprises a cylinder 15 provided with spikes 19 which are inserted in a base 21. A central spike 18 passes through the cylinder and base and is inserted in the ground. The cylinder may be formed with a spiral groove and the cable may be secured to the cylinder by a wing nut 20.
Patent GB-240586-A (GB)
Title: An improved toothbrush, with additional means for removing deposits from false teeth and plates
IPC: A46B15/00
Filed: 1924-07-24
Abstract: 240,586. Driver, H. July 24, 1924. Brushes combined with scrapers.-The handle a is provided with a small steel blade c, preferably of stainless steel, for cleaning false teeth and plates. The blade is secured by a tang or by other means.
Patent GB-1138639-A (GB)
Title: Time division multiplex transmission systems
IPC: H04J3/04
Filed: 1966-04-22
Abstract: 1,138,639. Multiplex pulse signalling. INTERNATIONAL STANDARD ELECTRIC CORP. 22 April, 1966 [26 April, 1965], No. 17683/66. Heading H4L. A time division multiplex transmission system is controlled by timing means comprising a source of timing pulses and timing circuit means, in which the timing circuit means are supplied by said source and form the various control, pulse patterns for controlling the operation of the system, the said source generating first and second phase clock pulses which are applied respectively to a pair of inputs of the timing circuit means whereby a number of basic pulse patterns are formed using the clock pulses of both phases, some of the control pulse patterns being derived from a logic combination of a plurality of the basic pulse patterns and the remainder from a single one of the basic pulse patterns. As described, the second phase clock pulses occur midway in the interval between the first phase clock pulses. The system shown in Fig. 1 has twelve six digit channels of which one channel is used to carry a sync. signal. Each channel includes a filter F1 &c. and gate CG1 &c., the outputs of the odd-numbered channel gates being supplied to a storage capacitor C1 which between channel gating pulses is clamped to earth through a gate OG. The charge on capacitor C1 is supplied via a compressor OC and encoder ENC to the output S. The even-numbered channel gates are connected similarly to a capacitor C2 cooperating with a clamping circuit EG, the capacitor C2 supplying signals to the encoder via a compressor EC. The gates are controlled by a timing circuit TC operating under the conditions specified and provided with inputs I 1 , I 2  receiving first and second phase clock pulses from a generator not shown. Two such 12-channel systems S12, S<SP>1</SP>12 may be combined, Fig. 2, the inputs I1, I2 of the timing circuit TC being supplied by outputs #1, #<SP>2</SP> respectively of the clock CL and the inputs I1, I2 of timing circuit TC<SP>1</SP> being fed by outputs #<SP>2</SP>, #<SP>1</SP> respectively. By this means the channel slots of system S<SP>1</SP>12, e.g. ts<SP>1</SP>2 Fig. 11, are shifted by half a digit with respect to those of system S12, e.g. ts 2, and the two output signals S, S<SP>1</SP> are combined to form the signal SS<SP>1</SP>. At the receiver, Fig. 13, an oscillator OSC generates pulses P 0  and a discriminator DSC produces a narrow pulse V for each transition of the signal SS<SP>1</SP>. The pulses V and P o  are supplied to a NAND gate L23 which via an inverter Q32 controls a bi-stable device FF, and pulses V together with pulses P 0  inverted at Q30 are supplied to a NAND gate Q31 controlling bi-stable device FF<SP>1</SP>, to produce the outputs S and S1 respectively. Logic circuitry and equations for the derivation of the various pulse trains are given.
Patent GB-702118-A (GB)
Title: Process and apparatus for stripping and regenerating finely divided solids contaminated with combustible matter
IPC: B01J8/26
Filed: 1952-07-14
Abstract: <PICT:0702118/III/1> Finely - divided solids contaminated with combustible matter are stripped and then regenerated by burning, both operations being carried out with the solids in the fluidised condition in zones which are in heat exchange with one another, and solids are separated from the combustion gases and mixed with the solids to be stripped.  As shown, solids having carbonaceous deposits enter vessel 1 at 5, stripping steam being introduced at 3 and air for burning at 4; the treated powder leaves at 6.  Dust is removed from the spent combustion gas in cyclone separator 8 and returned through dividing wall 2 to the stripping zone.  A further cyclone separator 7 may be provided to remove solids from the stripping gas and to pass these solids to the burning zone.  The solids treated may be decolorising clays, filter aids, or catalysts, which have been contacted with an oil or other carbonaceous liquid or vapour.
Patent GB-1255070-A (GB)
Title: Polyester resins
IPC: C08G63/553
Filed: 1969-04-03
Abstract: 1,255,070. Coatings. HITACHI CHEMICAL CO. Ltd. 3 April, 1969 [10 April, 1968], No. 17712/69. Heading B2E. [Also in Division C3] Substrates e.g. glass plates and iron sheets are coated with an air-curable polyester resin composition prepared by heating (a) an acid mixture comprising 10 to 90 mole % of a methyl-1, 2, 3, 6-tetrahydrophthalic acid or its anhydride and 90 to 10 mole % of an α, #-ethylenically unsaturated dicarboxylic acid or an anhydride thereof with (b) an alcohol mixture comprising 75 to 95 mole % of an oxyalkylene glycol or polyoxyalkylene glycol or a mixture thereof, 0 to 35 mole % of a monomeric glycol and 5 to 25 mole % of a triol, to form a polyester, and then dissolving the thus formed polyester and an additionpolymerisable ethylenically unsaturated monomer in each other and the resin is cured.
Patent GB-292512-A (GB)
IPC: D06F37/42
Filed: 1928-06-19
Abstract: 292,512. Siemens - Schuckertwerke Akt.-Ges., (Assignees of Siemens-Schuckertwerke Ges.). June 20, 1927, [Convention date]. Interconnecting guard with starting-gear; stopping machinery by movement of guards.- In a washing-, rinsing-, or centrifugal drying- machine comprising a receptacle 4 rotated in a stationary casing 1 by an electric motor 5 through gearing 6 there is provided a cover 7 which must be shut and secured before the motor can be started. For this purpose the cover is provided with sliding handles 8, 9 which are pushed through registering apertures 10. 11 in the cover and casing. One of the handles depresses a lever 18 to close, against a spring 19. contacts 16 in the motor circuit. The cover also coacts with a push-rod 22 to depress it against a spring 24 so that a cranked portion 25 moves an arm 20 against a spring 21, Fig. 2, to move a brake 20<a>, carried by the arm, out of contact with the receptacle 4. Retraction of the handles allows the springs 19 to break the circuit, whilst removal of the lid permits the spring 24 to raise the push-rod and allow the spring 21 to apply the brake.
Patent GB-1465709-A (GB)
Title: Thyristor
IPC: H01L29/00
Filed: 1974-04-23
Abstract: 1465709 Thyristors BORG-WARNER CORP 23 April 1974 [8 June 1973] 17732/74 Heading H1K A thyristor 30 comprises a PNPN structure in which the outer P and N layers 11, 14 have ohmic contacts which respectively form the anode 15, 15<SP>1</SP> and cathode, and the inner N layer 12 has an ohmic contact 25 which forms the anode gate, and is thicker than any other layer in the thyristor body. The gate electrode 25 may be annular, interdigitated or comprise islands distributed over the gate region 12 and the thyristor 30 may be mounted on a molybdenum base 27 using a gold/antimony preform 28. Two circuits are used to turn the thyristor on and off and a sweep circuit is used to sweep out charge carriers near the centre PN junction to reduce the switching time. The thyristor is formed from a silicon body doped with phosphorus and boron, the doping concentrations in the layers 11, 13, 14 being Gaussian.
Patent GB-727451-A (GB)
Title: Article storing and dispensing apparatus
Inventor: BOCKIUS CHRISTOPHER
IPC: B65G1/07
Filed: 1953-06-26
Abstract: 727,451. Self-levelling apparatus. AMERICAN MACHINE & FOUNDRY CO. June 26, 1953, No. 17759/53. Class 78 (2). Apparatus of the self-levelling dispensing platform type comprises a jogging device 144 associated with the platform 54 for positively displacing the platform whenever friction between platform and walls prevents the platform from maintaining its level. As shown, table 54 is maintained at the level shown by the force of springs (not shown) upon the supporting chains 76, the chain passing over sprockets 84, 86 and being attached to the platform at 68. Handle 144 is fitted with pawl 150 which rotates ratchet 158 on shaft 88 and thus sprockets 84, 86, so as to jog the platform when required. The material on the platform 54 is supported by drop flaps 120, 122 carried by top plate 34.
Patent GB-1100807-A (GB)
Title: 6-amino-penicillanic acid and a process for the preparation thereof
Inventor: TAKEDA HIDEO
IPC: C12N9/84
Filed: 1965-04-28
Abstract: A penicillin-splitting enzyme is prepared by cultivating Arthrobacter viscosus Norspec., especially A. viscosus ATCC 15294 or a mutant thereof, in an aqueous nutrient medium under aerobic conditions.  A suitable medium contains corn steep liquor, glucose, phenylacetic acid, ammonium chloride and water.  The temperature is 10 DEG  to 40 DEG  C., the pH 7.0 to 9.5 and the duration of cultivation 6 to 72 hours. The enzyme may be adsorbed on to diatomaceous earth or charcoal from the whole or the clarified broth and may be used in this form. Alternatively, the enzyme may be precipitated from the clarified broth by means of (NH4)2SO4.ALSO:6-Aminopenicillanic acid is produced by contacting benzylpenicillin or a salt thereof, with a penicillin-splitting enzyme produced by a strain of Arthrobacter viscosus, e.g. Arthrobacter viscosus ATCC 15294.  The microorganism is grown in an aqueous nutrient medium under aerobic conditions at 10-40 DEG  C. and pH 7.0 to 9.5 for 6 to 72 hours.  The whole broth, the clarified broth, or the whole or clarified broth which has been treated with diatomaceous earth or charcoal so as to adsorb the enzyme, may be used in the enzymatic hydrolysis step. Alternatively, the enzyme may be precipitated from the clarified broth by means of (NH4)2SO4 and then dissolved in aqueous ammonia.  The enzymatic hydrolysis step is at 20 DEG  to 50 DEG  C. and pH 7.0 to 9.5. Solids are filtered-off and unreacted penicillin is removed by extraction with an organic solvent at pH 2.0 to 3.0.
Patent GB-545788-A (GB)
Title: Improvements in and relating to oil heating apparatus
IPC: F23K5/20
Filed: 1940-12-20
Abstract: 545,788. Liquid fuel heating. McKEAN, J. G. Dec. 20, 1940, No. 17924. [Class 75 (i)] [Also in Group XIII] An oil heating apparatus suitable for supplying hot oil to the burners of furnaces at starting comprises a shell 1 lined at the bottom with brick 4 to form a furnace chamber 5 and fitted above the furnace chamber with a perforated dome 8 which prevents the flames of a liquid fuel burner 6 from impinging directly on a coiled pipe 14 through which the oil is pumped.
Patent GB-1359215-A (GB)
Title: Roller and method of making same
IPC: B65H27/00
Filed: 1971-05-28
Abstract: 1359215 Rollers DUNBEATH HOLDINGS PTY Ltd 28 May 1971 17974/71 Heading F2U A roller sleeve 70 comprises a fibre (e.g. glass) reinforced synthetic plastics sleeve whose outer surface comprises exposed fibre giving a fuzzy surface 114. The sleeve may have an outer elastomeric layer 124 (e.g. natural or neoprene rubber or polyurethane) moulded there around, Fig. 8 (not shown), being bonded thereto by a bonding agent and fibres 114 extending into the layer 124. This composite sleeve may be press fitted or keyed to a metal core, Fig. 10. The sleeve 70 may be formed by winding, Fig. 1 (not shown), a continuous strand of glass fibres impregnated with polyester resin on to a mandrel, airing the sleeve, first on and then off the mandrel, Figs. 4, 5 (not shown), then turning on a lathe, Fig. 6 (not shown), with a blunt tungsten carbide tool (110) to shatter the resin on the outer surface thereby exposing the fibres. Reference has been directed by the Comptroller to Specification 1,264,549.
Patent GB-297903-A (GB)
Title: Improvements in fountain pens
IPC: B43K5/04
Filed: 1927-07-08
Abstract: 297,903. Double, F. E. July 8, 1927. Self-filling reservoir pens.-In a selffilling reservoir pen having a sac d adapted to be deflated by the bending of a spring strip f through longitudinal movement of a plunger h in the rear end of the barrel, the movement of the plunger is obtained by means of cam surfaces on an external rotatable knob or cap, and positive means is provided for preventing rotation of the plunger. As shown in Fig. 1, the plunger is of rectangular or other non-circular cross-section and is slidable but not rotatable in a correspondingly-shaped aperture in the end of the barrel. The end of the barrel is closed by a cap g through which passes the shank of a rotatable knob j formed at its inner end with cams l adapted to engage the plunger h. In the form shown in Fig. 8, the plunger h has a bevelled rear end engaging a corresponding bevel formed in a cap g screwing on to the end of a plug n closing the end of the barrel, the plug being formed with two apertunes, one to accommodate the plunger, and the other to engage a pin o in the cap to limit its rotation. According to the Provisional Specification, the plunger enters an aperture eccentrically placed in the end of the barrel, and is engaged by a cam on the cap constructed so as to release the preseer bar after a half-revolution.
Patent GB-500038-A (GB)
Title: Improvements in and relating to lathes and like machine tools and way guards therefor
IPC: F16P3/02
Filed: 1937-06-30
Abstract: 500,038. Lathes. WARNER & SWASEY CO. June 30, 1937, No. 18149. Convention date, June 30, 1936. [Class 83 (iii)] A lathe &c. has a number of slides supported on guideways, one of which is common to the slides and is of stepped form to provide two V-shaped portions a, b, Fig. 8, guard members being provided to protect the guideways, one of said guard members being secured to one of the slidable members and protecting one of the V-shaped portion, of the guideway, and another guard member being secured to the other slidable member and protecting the other V-shaped portion of the guideway. The stepped guideway 13, Fig. 8, may form the front support in a turret lathe for a turret slide 15, Fig. 2, and a saddle 16 carrying a crossslide. The base of the saddle is guided by a secondary guideway 18, Fig. 3, and strips 19 and 23 with a tapered gib 22, Fig. 8, are additionally provided for the saddle in connection with its guiding by the stepped way 13. A guard member 27 is attached to the lefthand side, Fig. 2, of the saddle and protects both steps of the common guideway and this is in part overlapped by a guard 30 attached to the left-hand side of the turret slicle 15 and passing through an aperture in the saddle. A guard 31 connected to the right-hand side of the saddle combines with the guard 30 to enclose the whole of the stepped way between the two slide members and the former guard passes through an aperture in the turret slide to combine with a guard 33 attached to the right-hand side of the turret slide to enclose the guideway on this side. Guard members 35 and 36, Fig. 2, protect the rear guideway on which only the turret slide moves.