baber/WOPTO huggingface dataset:
Patent GB-977292-A (GB)
Title: Improvements in or relating to alkylation processes
IPC: C07C2/60
Filed: 1961-09-22
Abstract: In the liquid phase alkylation of a C4 or C5 isoparaffin with a C3-C5 olefin in the presence of an equimolar complex of aluminium chloride and a dialkyl ether containing free dissolved aluminium chloride there is added to the catalyst a halide of calcium, cuprous copper, lead, magnesium, mercurous mercury, silver, strontium, or zirconium, or a chloride, bromide or iodide of sodium or lithium; this additive inhibits isomerization and the formation of red oil.  The free aluminium chloride may be 0.5-100% by wt. of ether-halide complex and the other halide is added in amounts of 0.1-2 mols. per mol. of free aluminium chloride or 0.1-1 mol. where the metal ion is lithium or sodium. The ether is preferably a di-n-C1-C4-alkyl ether.  Hydrogen chloride may also be present. Suitable conditions are 0-70 DEG  F., sufficient pressure to maintain liquid phase, and an isobutane-olefin mol. ratio of 3-200: 1.ALSO:A hydrocarbon alkylation catalyst comprises an equimolar complex of aluminium chloride and a dialkyl ether containing dissolved free aluminium chloride and an isomerization inhibitor which is a halide of calcium, cuprous, lead, magnesium, mercurous, silver, strontium or zirconium or a chloride, bromide or iodide of sodium or lithium.  The free aluminium chloride may be 0,5-100% by weight of the complex and the other halide 0,1-2 mols per mol of free aluminium chloride or 0,1-1 mol in the case of lithium or sodium.  Hydrogen chloride may also be added.
Patent GB-796392-A (GB)
Title: Aid for learning to play the bass on the accordion
IPC: G09B15/00
Filed: 1956-11-08
Abstract: 796,392. Accordions. NENSBERG, H. J. Nov. 8, 1956 [Nov. 25, 1955; Dec. 9, 1955], No. 34110/56. Class 88 (2). An accordion is provided with a mirror arranged to facilitate viewing the bass keyboard. In one embodiment, Fig. 1, the mirror 10 is connected by a ball-joint 9 to a slidably adjustable sleeve 7 moving on a rod 6, held by a ball connection 5 to a bar 4 fixed to the top of the accordion by suction caps 3. To avoid the effects of invertion, two mirrors may be used, the one detachably hinged upon the other, so that the keyboard may be viewed through two mirrors, Figs. 2, 3 (not shown). In another embodiment, Fig. 4, the mirror 10 is connected by a ball-joint 9 to a flexible " stay-put " member 4a, the latter being attached to an adjustable clamp comprising adjacent strips 16, 17 whose turned-down ends 16a, 17a carry suction caps 3 for engaging the body of the accordion. For adjusting the distance between the caps 3, the strips 16, 17 may slide relative to each other, being clamped in the appropriate position by wing nuts 20. The strip 17 has a base of soft material for contact with the accordion casing.
Patent GB-432882-A (GB)
Title: Improvements in and relating to bearings
IPC: E02F3/14
Filed: 1933-12-05
Abstract: 432,882. Excluding foreign matter from bearings. WILKINSON, C. G., Kuala Sawah, Negri Sembilan, Federated Malay States. Dec. 5, 1933, No. 34189. [Class 12 (i)] [See also Group XXVI] To prevent the entry of foreign matter into the underwater water bearings of dredgers, an elastic ring 8 fits tightly upon the shaft 5 and is housed within an annular recess 7 near the end of the bearing 6. The external water pressure, or the internal grease pressure, whichever is the greater, distorts the ring into fluid tight engagement with the shaft 5 and against a side wall of the recess 7. Pins 31 may be used to prevent the ring 8 from puckering or moving with the shaft 5. Where the internal pressure deforms the ring 8 means may be provided to increase the internal lubricant pressure as the water pressure increases. As shown, the bearing 6 is connected by a pipe 23 with a cylinder 25 filled with lubricant. The cylinder 25 has a piston 17 and a flexible diaphragm 19, the space 20 between the piston and the diaphragm 19 being filled with a liquid such as alkaline water. The water pressure upon the outside of the diaphragm 19 is thus transmitted to the piston 17. The lower face 28 of the piston opens into a chamber 29 having a pipe 30 leading to the atmosphere.
Patent GB-1356348-A (GB)
Title: Semi-conductor oscillating element
IPC: H01L29/73
Filed: 1971-07-21
Abstract: 1356348 Semi-conductor oscillation generators FUJI DENKI SEIZO KK 21 July 1971 [24 July 1970 16 April 1971] 34197/71 Heading H1K [Also in Division G1] A device for producing oscillations consists of two semi-conductor regions 2, 3 forming a P-N junction, one of the regions carrying a minority carrier injector spaced about one minority carrier diffusion length from the junction, an ohmic contact 11 similarly spaced from the junction but well spaced from the injector and a second ohmic contact 10 closer to the injector. The injector may be a heterojunction but as shown it is the P-N junction formed between regions 6 and 2, which is forward biased in operation by source 15. Within a certain range of applied voltages the device produces oscillations the frequency of which varies with voltage. A voltage source 20 and series resistor 19 are connected between the injector and the second ohmic contact and may be varied to change the voltage range within which oscillations occur and the frequency of oscillation. Thus by using a resistor which varies with magnetic field, temperature, or light intensity a frequency dependent on these parameters is attained. An ohmic contact may be provided on region 3 and a resistor connected between it and the ohmic contact 11 or the injector. In the former case oscillation only occurs if the resistor has a value in excess of several 100 K# and its frequency increases with increasing resistance, while in the latter case oscillation occurs for lower resistance values but its frequency varies inversely with resistance. If a capacitor is substituted for the resistor lower oscillation frequencies are achieved, while if a voltage source is used the frequency varies directly or inversely with the voltage according to whether the bias is forward or reverse with respect to the junction 4. In a modification an N+ inclusion is provided adjacent junction 4 increases its capacity and hence give a lower range of frequencies. Alternatively further capacitance is introduced by disposing an electrode on the silica insulation overlying region 3, the electrode forming an extension of or being connected directly or via a resistor to electrode 9 or 11. In a furthr modification region 3 is disposed on the opposite face of the wafer to the injector and ohmic contacts. In all cases the ohmic contact 10 is disposed on a heavily doped inclusion. This has a portion which, except in the last mentioned modification extends between the injector and the junction 4. The Fig. 1 device may be used to provide a temperature stabilized oscillator by replacing source 20 and its series resistor 19 by a positive temperature coefficient resistor to afford temperature sensitive by-passing of the injector junction.
Patent GB-321835-A (GB)
Title: Improvements in or relating to woodworking machines
IPC: B23Q5/40
Filed: 1928-11-21
Abstract: 321,835. Rueger, E. A. Nov. 21, 1928. Drilling- machines.-In a woodworking-machine, the rotary tool is attached to an electric motor fitted to the end of a horizontal arm. Fitted to a pillar 2 is a sleeve 3 on which oscillates a guiding base 4. The sleeve 3 and guiding base 4 may be vertically adjusted on the pillar 2 by means of the verticle spindle 28. A hollow, tubular carrier 7, which has prismatic projections 8, is mounted between rollers 6 in the guiding base 4, Fig. 3, and is arranged to have longitudinal movement. Pins are rotatably mounted at each end of the carrier 7, to which the motor may be directly attached, or the motor is attached to a rotatably mounted pin 20 which is connected to the carrier pin by two slide rests at right angles to each other. The rotatable table 23 is clamped to rails 22 and may be moved transversely in front ot the machine. Specification 250,608 is referred to.
Patent GB-412918-A (GB)
Title: Improvements in or relating to devices for bending or straightening metal rails, girders and the like
IPC: B21D7/06
Filed: 1932-12-03
Abstract: 412,918. Bending rails &c. HUNT, W.A., 15, Alfred Place, Bedford Square, and DEWSBURY, W. G., 60, Queen Victoria Street, both in London. Dec. 3, 1932, No. 34314. [Class 83 (iv).] A three point beader for rails &c. has a yoke A with hooks A<1> which engage the rail. Screws C, C<1> engage the yoke and a hook C<3> to form a differential screw for pulling or pushing the hook C<3>. In a modification, the screw C is a sliding fit in the yoke A and is operated by nuts.
Patent GB-756016-A (GB)
Title: Improvements in gain control circuits for semiconductor amplifiers
IPC: H03G3/30
Filed: 1954-11-26
Abstract: 756,016. Volume compression and expansion. GENERAL ELECTRIC CO. Nov. 26, 1954 [Dec. 29, 1953], No. 34373/54. Drawings to Specification. Class 40 (4). [Also in Group XL (c)] In a gain control circuit, the last stage of a transistor amplifier is arranged to operate as a detector, a D.C. potential being derived from that stage and fed back to the first stage. The amplifier may be operated to give volume expansion or compression. An A.G.C. circuit is described (see Group XL (c)). Specification 756,017 is referred to.
Patent GB-1047108-A (GB)
Title: Anti-microbial compositions containing 1,3,7-triazabicyclo [3.3.0] octanes
IPC: C07D487/04
Filed: 1965-08-11
Abstract: Antimicrobial compositions in unit dosage form comprise a carrier and a compound of the general formula:  <FORM:1047108/A5-A6/1> wherein R is H, ethyl, n-butyl, n-hexyl or phenyl.  They may be in forms suitable for oral or topical administration, including compositions for use in the oral cavity, and may optionally also contain antibiotics e.g. penicillins and tetracycline, sulphonamides, anti-protozoal, anti-pruritic, antiinflammatory and antihistaminic agents.
Patent GB-1030344-A (GB)
Title: Improvements in or relating to the manufacture of polyamides
Inventor: CARTER JOHN ANTHONY
IPC: C08G69/04
Filed: 1963-08-31
Abstract: Linear aromatic polyamides are continuously prepared from a diammonium dicarboxylate salt of a diamine NH2-X-NH2 and a dicarboxylic acid HOCO-Y-COOH or from an amino-acid NH2-Z-COOH where X is a chain of p-methylene groups and q m- or p-phenylene groups, Y is a chain of r-methylene groups and s m- or p-phenylene groups and Z is a chain of t-methylene groups and u m- or p-phenylene groups, p, q, r, s, t and u being zero or positive integers, q and s being 0-2 at least one being greater than 0, u being 1 or 2, p being at least 6 if q is 0 but otherwise at least 2, r being at least 4 if s is 0, the sum of p and r being at least 6, t being at least 3, the phenylene groups not being directly connected to the amino groups, and X, Y and Z being optionally alkyl substituted and optionally containing -O- links other than -O-O-, -O-CH2-N =, and -O-(CH2)2-O-.  The monomer is mixed with water and pumped along a tube of up to 3.5 cm. diameter, heated to the polymerization temperature and having a pressure of at least 14 atmospheres at the inlet decreasing to atmospheric or sub-atmospheric at the outlet but everywhere being sufficiently low to permit evolution of steam from the mixture, the rate of passage being such that at least 90% of the potential water of condensation is in fact evolved.  Entirely aliphatic polyamide forming monomers may be mixed with the aromatic monomers of the invention. Monoacids and amines, e.g. acetic acid, and the difunctional acids and amines, as distinct from their salts, may also be present.  Other additives are dyes, pigments, plasticizers, heat stabilizers, photostabilizers, and delustrants. Numerous examples of the monomeric reactants and the plasticizers are given.  The reaction tube may be a vertical or horizontal helix made of steel the material entering at the upper or lower end.  It may increase in diameter from inlet to outlet and be jacketed with hot fluid. The temperature may be 275-300 DEG  C.  The product may issue into a vessel or a larger diameter tube from which it may subsequently be drawn off and made into fibres, films, ribbons or shaped objects.
Patent GB-293261-A (GB)
Title: Improvements in apparatus for playing table games of skill
IPC: A63F7/24
Filed: 1927-12-21
Abstract: 293,261. Burd, H. F. Dec. 21, 1927. Table games.-In apparatus for playing table games of the kind wherein stud-like discs are propelled along the playing surface by means of a flexible ligature, the ligature C is connected at its ends to a pair of pivoted arms B<1> each of which has a spring F' connected to it to maintain the ligature taut whereby when the ligature is pulled back and released the springs will restore the parts to normal position and will impel the stud-like disc D along the playing board. The object of the player is to cause the discs to enter holes A. The springs F<1> pass round guide pulleys G<1>, and the arms B<1> are enclosed in box-like members 2.
Patent GB-377883-A (GB)
Title: Improvements in tea pots, coffee pots and the like
IPC: A47J36/14
Filed: 1931-12-15
Abstract: 377,883. Teapots. BULPITT & SONS, Ltd. and BULPITT, W. H., Swansea Works, Camden Street, Birmingham. Dec. 15, 1931, No. 34701. [Class 129.] The strainer 9 at the base of the spout of a teapot or like pouring vessel has a pair of recesses 11 which are engaged by lugs 3 on the spout 5 or body 7 of the pot. These lugs are bent over to secure the strainer in position during the process of securing the spout by pressing the metal.
Patent GB-1280682-A (GB)
Title: Photographic exposure control mechanism
Inventor: JENKINS GERALD LEE
IPC: G03B7/085
Filed: 1969-07-10
Abstract: 1280682 Photographic exposure control EASTMAN KODAK CO 10 July 1969 [22 July 1968] 34728/69 Heading G2A A camera exposure control system comprises means for preventing excessive under exposure of subjects of photographic interest which are situated against very bright backgrounds. As shown, this is achieved by limiting the movement of a diaphragm vane 18 so that the aperture of an objective 10 cannot be reduced below a predetermined minimum value, which is set according to film speed. A film cartridge 25 has a film speed coding notch 27 for admitting a feeler 33 which pivots a stop 40 into the path of vane 18 movable according to light incident on a photo-sensitive element 17 of an exposure meter 16. The feeler 33 and end 43a of stop 40 may be stepped. If no restriction of aperture size is required the notch 27 is of a length too short to admit feeler 33.
Patent GB-347362-A (GB)
Abstract: 347,362. Feeding webs to core-covering machines. CALLENDER'S CABLE & CONSTRUCTION CO., Ltd., Hamilton House, Victoria Embankment, London, and RICHARDSON, A. B. F. G., cf Callender's Cable & Construction Co., Belvedere, Kent. Feb. 19, 1930, No. 5588. [Class 100 (i).] In a web-supplying device for a machine, particularly a machine for covering electric conductors with insulating material, in which the coil of material is mounted on a carrier supported on a spindle which rotates bodily about an external axis, and in which a brake device controls the rotation of the carrier on its spindle, an antifriction thrust bearing is provided to locate the carrier in a definite position axially of its spindle so as to prevent variation in the braking effect due to axial movement of the carrier by centrifugal force. As shown, two coils 2, 3 are mounted on carriers 10, 21 loosely mounted respectively on the spindle 1 and on a sleeve 17 fast on the spindle. The carriers are controlled by spring-controlled brakes 13, 14 and 23, 24, in the manner described in Specification 332,991, [Class 100 (i), Feeding and delivering webs &c.]. To prevent variation of the pressure of the springs 13, 23 by centrifugal action upon the carriers, ball thrust bearings 16, 29 are mounted between rings 18, 19, 32 on the sleeve 17 and coact with the carriers to prevent them from moving axially of the spindle 1.
Patent GB-1379116-A (GB)
Title: Treatment of cereals and other seeds
Inventor: NEWTON DAVID
IPC: B02B1/08
Filed: 1972-07-25
Abstract: 1379116 Infra-red treatment of seeds D NEWTON 22 May 1973 [25 July 1972] 34804/ 72 Heading A2Q [Also in Division F4] Cereal grains, peas, beans and other seed are swollen and ruptured by placing them on an openwork metal conveyor 3, and passing them beneath an infra-red heater 5, having a wave-length of 1.8-6 microns. The seeds may be barley, wheat, maize, Milo oats or soyabeans. They may be coarsely ground before treatment. In Fig. 1, seeds from feed hopper I are fed via variable-speed vibrator 2 to variable-speed, vibrating conveyor 3. The conveyor is of wedge-woven steel wire. Its speed may be increased automatically in response to increase in temperature of the seeds. Infra-red heaters 5 are ceramic tiles heated by a compressed air/propane mixture. The heated seed are passed through roller mill 12 and fluid bed cooler 15 before emerging on conveyor 16. Surplus steam and fine material pass from the fluid bed cooler to cyclone 20 where they are separated.
Patent GB-1188058-A (GB)
Title: Organopolysiloxane Composition
IPC: C08L83/04
Filed: 1968-07-22
Abstract: 1,188,058. Organosilicon polymers. DOW CORNING CORP. 22 July, 1968 [21 Aug., 1967], No. 34825/68. Heading C3T. [Also in Division G2] An organopolysiloxane composition comprises: (I) 60-70 parts by wt. of a dimethylvinylsilyl end-blocked copolymer consisting of 6-9 mol per cent phenylmethylsiloxane units, 0À1 to 0À2 mol per cent of vinylmethylsiloxane units, the balance being dimethylsiloxane units; (II) 30-40 parts by wt. of a dimethylvinylsilyl end-blocked copolymer consisting of 15-25 mol per cent vinylmethylsiloxane units, 4-6 mol per cent of phenylmethylsiloxane units, the balance being dimethylsiloxane units; the sum of I and II equals 100 parts by wt.; (III) 2 to 10 parts by wt. per 100 parts of I and II of a resin consisting of trimethylsiloxane units, dimethylvinylsiloxane units and SiO 2  units the ratio of trimethyl and dimethylvinyl-siloxane units to SiO 2  units ranging from 0À6 : 1 to 1À2 : 1. At least I and II are free of materials having M.W. <5000. The compositions may be cured with an organic peroxide.
Patent GB-1320605-A (GB)
Title: Arrangement for the automatic balancing of washing and drying machines
IPC: D06F37/22
Filed: 1971-07-26
Abstract: 1320605 Centrifugal driers INDUSTRIE A ZANNUSSI SPA 26 July 1971 [1 Aug 1970] 34894/71 Heading F4G [Also in Division D1] In order to avoid dynamic inbalance of the rotary overhung basket 1 of a washing or centrifuging machine due to laundry 7, the basket is provided with peripheral chambers 11 and is mounted on a driving shaft 6 by a resilient member 5 or 23 which causes, on basket inbalance, at least one member 9 to actuate a respective valve 10, which rotates with the driving shaft 6, to supply water to a respective chamber 11 to reduce the inbalance. In Fig. 1 the member 5 is a resilient metal diaphragm the members 9 are straps secured to the diaphragm, and the valves 10 are mounted on rigid arms 14 secured to the driving shaft 6 and extend through holes 21 into the chambers 1@1. In Fig. 4 the member 23 is a deformable rubber disc and rubber containers 24 and provi ded within the chambers 11 which then need not be water-tight.
Patent GB-744575-A (GB)
Title: Method of converting sulphite waste liquor into a solid utilisable material
IPC: D21C11/10
Filed: 1953-12-15
Abstract: Sulphite waste liquor is converted to a solid product suitable for use as a fuel or a fertilizer by first evaporating the waste liquor in a multistage vacuum evaporator to a water content of 20-40 per cent by volume, further reducing the water to 10-20 per cent in a film evaporator and finally mixing the concentrate with sufficient calcium hydroxide to bring the pH of the mixture to 7-8.  The pH is maintained during the evaporation at 5-6.  The calcium hydroxide used is preferably carbide sludge.ALSO:Sulphite waste liquor is converted to a solid product suitable for use as a fertilizer by first evaporating the waste liquor to a water content of 20-40 per cent by volume in a multi-stage evaporator, further reducing the water content to 10-20 per cent under atmospheric pressure in a film evaporator, the pH during the concentration stage being maintained at 5-6, and finally mixing the concentrate in a planetary mixer with sufficient calcium hydroxide to bring the pH of the mixture to 7-8. The calcium hydroxide used is preferably carbide sludge.
Patent GB-195168-A (GB)
Title: Improved electric or like timing device
IPC: G07F17/38
Filed: 1921-12-29
Abstract: 195,168. Bell, J. R. Dec. 29, 1921. Time checks.-A timing device for a game ot billiards comprises a clock or other motor which, when the mechanism is started engages with and rotates a wheel carrying a striker which, at the end of the given period, releases a hooked catch from the final operating member, for example a switch member, with which it has been engaged by the starting operation, and produces the desired indication. As shown applied to a switch for giving a signal when the time-limit of the game has expired, the operation of the device by a coin or otherwise momentarily energizes an electromagnet f which attracts an armature e and with it a lever d<1> to which it is resiliently connected. The armature is maintained in the raised position by a spring-actuated hooked latch e<2>. The lever carries a rubber-tyred wheel d which is brought into driving engagement with one of the wheels a<2> of the clock train and consequently a striker d<3> which serves also to restore the wheel to its initial position is carried round from the initial position against the spring c<1>, which may be adjusted for timing purposes, into engagement with a linkage mechanism connected with the latch e<2>. The armature is thus released and the contact arm g<1> carried thereon is brought into engagement with the fixed contact g to give a signal.
Patent GB-1056549-A (GB)
Title: Apparatus for thermal development of photographic materials
IPC: G03D7/00
Filed: 1964-08-26
Abstract: 1,056,549. Thermal development apparatus. GENERAL ANILINE & FILM CORPORATION. Aug. 26, 1964 [Sept. 9, 1963], No.34939/64. Heading G2A. Thermal development of photographic material is effected by carrying the material round between a belt 28 and a heated cylinder 26. The cylinder is of a low-expansion heat-resistant glass, and the belt is preferably of fibre glass cloth coated with a silicon rubber compound. The belt is guided by various rollers so as to be in contact with the cylinder over the greater part of its circumference. The photographic sheet is guided into the apparatus by a plate 36, and is guided out again into the exit zone 42 by a plate 41. The cylinder 26 is heated by a pair of infrared heating elements 43, 43' inside it, and its temperature is maintained in the range 175-200‹C, by a thermostat 44 placed close to its outer surface. In the modification of Fig. 1. (not shown) the heaters are outside the cylinder and the thermostat inside.
Patent GB-1077750-A (GB)
Title: Knitted fabric
Inventor: GEIPEL UDO
IPC: D04B1/02
Filed: 1965-08-16
Abstract: 1,077,750. Knitting. PASOLDS Ltd. May 13, 1966 [Aug. 16, 1965], No. 35023/65. Heading D1K. An interlock fabric knitted in a 3x3 relationship has one layer 1 of the fabric knitted of a crimped synthetic yarn such as nylon and which is fed to the needles of the machine in a stretched condition and has the other layer d knitted of a natural fibre yarn such as cotton. On completion of the fabric the crimped sythetic yarn is relaxed causing the layer I knitted from it to contract with the result that the other layer d is distorted into loops providing a series of blisters. The fabric produced possesses heat insulating properties. The stitch formation may include float, tuck or transferred stitches.