baber/WOPTO huggingface dataset:
Patent GB-1396875-A (GB)
Title: Hydroxyaryl carboxylic acids and esters thereof and their use  as antioxidants
IPC: C09K15/08
Filed: 1971-07-27
Abstract: 1396875 Bis-(4-hydroxyaryl) substituted carboxylic acids and esters thereof IMPERIAL CHEMICAL INDUSTRIES Ltd 26 Oct 1972 [27 July 1971] 35201/71 Heading C2C [Also in Division C3] The invention comprises a compound of the formula wherein R is a tertiary alkyl or alkyl-cycloalkyl group, A is a hydrocarbon group and Z is H or a residue of a mono- or di-hydric alcohol, or a residue of a mono-, di- or trihydroxy benzene, and m is 1 or 2. They may be obtained by (1) reacting a compound of formula ZOOCACHO with a compound of formula in the presence of an acid catalyst; (2) when Z is not hydrogen, reacting a compound of formula HOOCACHO with a phenol of Formula II and a compound of formula Z(OH) m  in which Z is not hydrogen, in the presence of an acid catalyst; (3) when Z is not hydrogen, esterifying a compound in which Z is hydrogen with a compound of formula Z(OH) m  in which Z is not hydrogen, in the presence of an acid catalyst, and (4) when Z is not hydrogen, transesterifying a compound of formula wherein Z<SP>1</SP> is a residue of a mono- or dihydric alcohol or a residue of a mono-, di- or trihydroxy benzene, with a compound of formula Z(CH) m  in which Z is not hydrogen and is different from Z<SP>1</SP>, in the presence of a basic catalyst. Examples are given for the preparation of the compounds. They are useful as antioxidants for organic materials.
Patent GB-1527679-A (GB)
Title: Vacuum cleaner
IPC: A47L5/30
Filed: 1976-08-24
Abstract: 1527679 Vacuum cleaners ELECTROLUX Ltd 24 Aug 1976 [19 Sept 1975] 35201/76 Heading A4F A vacuum cleaner comprises two relatively movable parts, one 10 having a suction opening 13 and the other 11 bearing a handle 12 for moving the cleaner over a surface to be cleaned, relative movement between the parts 10, 11  effecting regulation of the negative pressure at the suction opening so that should the opening cling to the surface being cleaned a push or pull on the handle admits air to reduce the suction at the opening. As shown a rocker arm 20 has ends housed in portions 21 and 22 of the part 11 and a slide valve 19 respectively, springs 23, 24 normally keeping the arm 20 in the position shown in Fig. 1 so that the slide valve 19 blocks an opening 18 in the part 10. If the opening 13 clings to a surface and sufficient force is applied to the handle to overcome the force of the springs then the part 11 moves relative to the part 10 causing the arm 20 to rock and move the valve slide 19 into one of the positions shown in Fig. 2 thereby allowing air through the opening 18 to reduce the suction in the part 10. The action of the springs 23, 24 can be damped.
Patent GB-903346-A (GB)
Title: A gonadotropic hormone devoid of antigen properties
IPC: A61K38/24
Filed: 1960-10-14
Abstract: A gonadotropic hormone active both as a follicle-stimulant hormone, and as a luteinic hormone and devoid of antigen properties, is prepared by treating fresh urine obtained from women in menopausal or post-menopausal stage, at a pH of 4 to 4.5 with kaolin purified by washing with dilute mineral acid, separating the kaolin with adsorbed hormone, washing, extracting with aqueous ammonia of pH 11 to 11.3, centrifuging and adjusting the pH of the liquid so obtained to pH 8.5 by the addition of acetic acid, discarding the precipitate, lowering the pH of the residual liquid to pH 5 to 5.5 and adding acetone to precipitate the crude hormone which is further purified, repeated if necessary, by chromatographic adsorption on a cationic exchange zeolite, previously acidified to a pH of 3.7 to 3.8, followed by washing with water to neutrality, next with aqueous ethanol of 70 to 80% concentration, then with aqueous ethanol of 70 to 80% concentration containing ammonium acetate and finally eluting with aqueous ethanol of 35 to 45% concentration containing ammonium acetate, the hormone being precipitated from the eluate by increasing the ethanol content of the eluate, and is then washed and dried.  It is preferred to precipitate the hormone by adjusting to an ethanol concentration of 80%.
Patent GB-732099-A (GB)
Title: Improvements in means for guiding, supporting and propelling the shuttle of a circular loom with horizontal shed
IPC: D03D37/00
Filed: 1953-12-18
Abstract: 732,099. Circular looms. SOC. D'APPLICATIONS GENERALES D'ELECTRICITE ET DE MECANIQUE. Dec. 18. 1953 [Dec. 22, 1952], No. 35298,/53. Class 142(2). A circular loom shuttle 1 is guided by the reed and by an upper guide r.ail 8 which may be smooth or may have closely spaced teeth 10, Fig. 10, penetrating the warp, and is driven by a roller 3 engaging an idle roller 2, the roller 3 being carried by a rotating carriage and being driven by gears from a circular rack on the loom. The forward end of the shuttle may be supported by an idle roller 4 engaging a belt 5 on rollers 6, 7 one of which is driven, or alternatively, a driven roller on the carriage may engage a belt carried by two idle rollers on the shuttle. In a modification, the roller 4 may engage the two rollers 6, 7, the belt being dispensed with or alternatively the roller 4 may engage one driven roller on the carriage. In a further embodiment, Fig. 10, the driven roller 3a and idle roller 2a and a supporting roller 26 are placed near the centre of the shuttle. An idle roller 11, or rollers 11a, 11b support the shuttle when it is at rest.
Patent GB-1045916-A (GB)
Title: Improvements in stepping mechanisms and timing mechanisms incorporating such stepping mechanisms
Inventor: CARTIER ROGER JOHN
IPC: H01H43/10
Filed: 1963-09-07
Abstract: 1,045,916. Ratchet gearing. CONTROLS CO. OF AMERICA. Aug. 13, 1964 [Sept. 7, 1963], No. 35418/63. Heading F2Q. [Also in Divisions D1 and H2] Switch operating cams 10, Fig. 4 (not shown), for a washing machine are driven by a ratchet wheel 11 stepped onwards by one tooth at a time by a reciprocating sprung pawl 12 on the end of a rocking arm 14, Fig. 1 (not shown), sprung against a driving cam 20 driven by an electric motor 22, and disengageable for a set period of each driven cam rotation. During the static period of the ratchet wheel, the pawl 12 is held out of ratchet tooth engagement by a sprung mask 26, having similar engageable teeth 26b, movable transversely and rotatably on the ratchet wheel shaft 27 and actuated through a toothed connection 26c-34c by a slidable link 34 actuated against a spring 35 by a rocking arm 30 operated by a cam 33 fast with the ratchet wheel 11. The pawl drives mask 26 four steps, without ratchet wheel rotation, and with the connecting teeth 26c ratcheting over teeth 34c on link 34 until the mask is pulled out of engagement with the link 34 by a spring 37 to drop the pawl 12 into engagement with the ratchet wheel 11. The cam 33 then allows the spring 35 to pull link 34 downwards (see Fig. 3, not shown) and the mask 26 is pulled back into toothed engagement with link 34 against a stop 26d thereon, ready for further disengagement of pawl 12.
Patent GB-876402-A (GB)
Title: Dual duct attenuators for air conditioning systems
IPC: F24F3/052
Filed: 1958-11-04
Abstract: 876,402. Ventilation. CONNOR ENGINEERING CORPORATION. Nov. 4, 1958 [Nov. 20, 1957], No. 35452/58. Class 137. A dual duct valve attenuator in an air conditioning system comprises separate hot and cold air ducts 2 and 3 which have variable dampers 6 and 6a connected by flexible cables 11 and 23 to an oscillating control member 20, so that actuation of the control 20 effects simultaneous opening of one duct and closing of the other. The dampers 6 and 6a are helical compression springs and the ducts are closed by caps 7 and 8 which are attached to a bell crank control member ZU at 19 and 29, via rod 8a, flexible cable 11 and pulley system 12,13 and 15, and rod 8a, cable 23 and pulley system 26, 24 and 25 respectively. The pulleys 15 and 25 are located on an adjustable arm 17 which is movable on a threaded rod 34, the position of the arm 17 determining the effective length of cables 11 and 23 and thus the extent of the opening of the dampers 6 or 6a whilst maintaining the total air volume constant. In Fig. 1 the bell crank 20 is pivotally mounted at 31 and its movement is effected by a link 32 which is pivoted at 33 eccentrically of the pivot 31. In Fig. 7, a lever 40 pivoted at 41, replaces the member 17 and the T-shaped control member 20 is operated by a rod 42 connected to a motor 43 controlled by a thermostat 44. In another embodiment, see Fig..9, a motor 50 is connected to a link 32a pivoted to the T element 20 at 33a and a motor 51 controlled by a pressure response device regulates the air volume flowing into the mixing chamber by automatically raising or lowering a lever 40a carrying pulleys 13a and 24a over which the flexible cables 11 and 23 extend.
Patent GB-1117284-A (GB)
Title: Improvements relating to cross-bottom bags
IPC: B65D30/24
Filed: 1966-08-08
Abstract: 1,117,284. Cross-bottom bags. K. H. HONSEL. 8 Aug., 1966 [9 Aug., 1965], No. 35463/66. Heading B8K. [Also in Division B5] A cross-bottom bag formed from a tubular blank is made by folding a corner flap 18, Fig. 2, formed by incisions 12, 12a, and an adjacent portion, defined by fold lines 14, 22, 22a, of the triangular pocket about the folding line 14 to simultaneously cause the cross-bottom flaps 19, 19a to be folded over each other, Fig. 3, about lines 2a, 2b, whereupon the bottom flaps 19, 19a are adhesively secured together and the corner flap 18, together with the adjacent portion, folded inwardly about the line 14 and secured to the bottom flaps. The tubular blank is machine scored and folded, one triangular pocket 11 having no incisions 12, 12a so that a filling tube or valve may be fitted.
Patent GB-502434-A (GB)
Title: Improvements relating to safety valves
IPC: A62C4/02
Filed: 1937-12-23
Abstract: 502,434. Safety valves. MITCHELL, F. R., and PEEBLES & CO., Ltd. Dec. 23, 1937, No. 35576. [Class 135] A safety valve for gas mains and the like comprises a liquid seal valve having a bell immersed in a liquid seal and adapted to open in the event of explosion and having an auxiliary chamber into which the sealing liquid may be blown. Excess pressure causes the bell 6 tc rise out of the sealing liquid (e.g. mercury), and flanges 8 and 9 adjoining the liquid trough form the chamber to prevent spilling, the member 9 normally dipping into the liquid. The bell is guided by a spindle 11 working in a spider 12 in the inlet and a bridge 13 secured to the casing by pillars 131. A buffer spring 14, or a piston and dashpot, absorbs shock as the bell reaches the upper end of its stroke.
Patent GB-487757-A (GB)
Title: Improvements in liquid magnetic compasses
IPC: G01C17/00
Filed: 1937-12-23
Abstract: 487,757. Magnetic compasses. BOYSEN, J., KUHLMANN, O., and PLATH, T. C. Dec. 23, 1937, No. 35596. [Class 97 (ii)] In a liquid magnetic compass the movable system 3, 4, is mounted within an inner vessol 2 which is resiliently suspended in the compass bowl 1 and the vessel 2 and bowl 1 communicate through an opening 7<1> and are filled with damping liquid. Preferably the vessel 2 is universally suspended in the bowl 1 by means of a gimbal ring and an outer ring 16 which is supported on the bowl 1 by a series of spaced compression springs 17. The compass card 3, carrying the scale 23, co-operates with the transparent cover plate 7, carrying the fixed scale 22, and with the parallel annular surface 20 to provide damping. Resilient projections 21 are provided to damp movements of the vessel 2.
Patent GB-1316373-A (GB)
Title: Stool formed of a plastics material
IPC: A47C9/00
Filed: 1971-07-29
Abstract: 1316373 Plastics stool TAIICHI ONO 29 July 1971 [3 Feb 1971 15 Feb 1971] 35612/71 Headings A4H and A4J A plastics material stool has a body portion 1, 2 on the upper end of which is mounted a cap 3, a small hole 1h, through which air is expelled when a user sits upon the cap 3, being provided near the upper end of the body. The body portion may comprise two inter-connected parts or one unitary part, Fig. 5 (not shown).
Patent GB-1324393-A (GB)
Title: Agglomerates of zeolitic molecular sieves
IPC: B01D53/28
Filed: 1970-07-23
Abstract: 1324393 Zeolitic molecular sieve agglomerates UNION CARBIDE CORP 23 July 1970 [24 July 1969] 35662/70 Heading C1A Hardened agglomerates of crystalline zeolite molecular sieve crystals are prepared by forming an initial agglomerate of compacted molecular sieve crystals, applying a substantially uniform thin continuous coating of a finely divided mixture comprising from 78% to 90% diaspore and from 10% to 22% clay by weight to the agglomerate, impregnating the diasporeclay mixture coated agglomerate with an aqueous potassium silicate solution (solids content = 2-4 wt. per cent) and firing the impregnated agglomerate at a temperature (e.g. 1050 to 1220 F.) sufficient to set and harden the silicate. The diaspore-clay mixture may have a particle size less than 350 U.S. mesh and form a coating of between 1 micron and 0À003 inch in thickness. The potassium silicate solution may have a K 2 O : SiO 2  by weight ratio of 0À477 to 0À40 : 1, and from 0À03 to 0À07 pounds of solution solid may be used per pound of agglomerate. Colloidal silica in suspension may also be present in the silicate solution. The agglomerates may be bonded with 5-35 wt. per cent clay (e.g. attapulgite, kaolin, sepiolite, polygorskite, kaolinite, plastic ball clays, bentonite, montmorillonite, illite, chlorite). The clay constituting part of the diaspore-clay mixture may also be one of these clays. The agglomerates may be dried between impregnation and firing. In Example 1, Type 3A molecular sieve crystals (80 parts by weight anhydrous) and attapulgus clay (20 parts by weight anhydrous) were dry blended, water (21 parts) was then added, and spherical bodies were formed by tumbling. 2% of ground diaspore 85%-15% attapulgite clay mixture were tumbled with the spherical agglomerates. The coated agglomerates were soaked for 6 hours at 70 F. in K 2 SiO 3  (2À9% solids), dried, and dried at 625 C. for 30 minutes.
Patent GB-758709-A (GB)
Title: De-icing device for gas turbine plants
Inventor: QUINBY CHARLES EDWARD
IPC: F02C7/047
Filed: 1954-12-10
Abstract: 758,709. Gas turbine plant. HOLLEY CARBURETOR CO. Dec. 10, 1954, No. 35781/54. Class 110(3) [Also in Group XXIX] A gas turbine plant comprising an air compressor feeding a combustion chamber and a turbine has a plurality of hollow bars across the inlet of the compressor with elongated slots on their downstream edges, a passage for conveying hot gases from the turbine exhaust to the interior of the bars and valve means controlling the flow in the passage which is responsive to a reduction in air flow or air pressure or both between the compressor and turbine as the result of ice formation on the compressor air inlet. A compressor 26 supplies air to a combustion chamber 28 feeding a gas turbine 18 driving the compressor. A screen 12 located in the compressor entry has a series of vertical streamlined tubes 11 arranged on its upstream side to which gases from the turbine exhaust space 16 are led by a passage 14. The tubes 11 are slotted at the back so that the gases impinge directly on the screen 12. A pitotstatic tube 30 is arranged in the entry to the combustion chamber 28. The differential pressure across the pitot-static tube 30 is applied to a spring loaded diaphragm 36 which is connected to an electrical contact 48 so that when the air flow is above a predetermined value the contacts 48, 50 are separated. A further spring loaded diaphragin 38' is actuated by the static pressure in the pitot-tube only. This diaphragm is connected to a movable contact 44 which engages a stationary contact 46. The contacts 48, 50 and 44, 46 are arranged in parallel in a circuit which energizes a solenoid 60 controlling a throttle valve 70 in the passage 14. The arrangement is such that, when the manually operated switch 54 is closed, if either the air flow or pressure in the combustion chamber falls below a predetermined value due to icing on the screen 12. the solenoid 60 is energized and the valve 70 operated to allow hot gas from the turbine exhaust to pass through the passage 14 and tubes 11 so as to melt the ice on the screen.
Patent GB-398692-A (GB)
Title: Improvements in cigar making machines
IPC: A24C1/32
Filed: 1932-12-19
Abstract: 398,692. Cigar - making machines. UNIVERSELLE CIGARETTENMASCHINEN-FABRIK J. C. MœLLER & CO., 48, Zwickauerstrasse, Dresden, Germany. Dec. 19, 1932, No. 35949. Convention date, Feb. 27. [Class 130.] In a cigar-making machine in which the wrapper is applied to the bunch by a nest of rollets, a pair of jaws, separate from the rollers, applies a slight pressure by which the pointed end of the cigar is gripped. When the cigar is to be removed and a fresh bunch is to be inserted, rollers 1, 2, which are rotated through gear wheels 6, 9, 7, 1<11>, 10, 2<11> and are mounted on arms 3 pivoted at 1<1>, are opened by links 21, 22, 24 and a cam 28 mounted on the main driving-shaft 5. In the course of opening the rollers, the jaws 13 which grip the pointed end of the cigar are separated by a cam 20 on the shaft 5, which causes a spring-pressed lever 16 to swing about a pivot 17 and move a roller 15 between the ends 13<1> of spring-pressed jaws 13 which are shaped to correspond with the end of the cigar. After the cams 28, 20 have closed the rollers and the jaws 13, the wrapper is wound helically around the bunch. In the modified construction shown in Fig. 5b, the jaws 13<3> are formed of laminations each having a spring to press it against the tip of the cigar.
Patent GB-1484959-A (GB)
Title: Instrument for measuring harmonic distortion in a transmission system
IPC: H04B3/46
Filed: 1975-09-03
Abstract: 1484959 Harmonic distortion measuring F R BRADLEY 3 Sept 1975 [3 Dec 1974] 36213/75 Heading G1U In a system for measuring harmonic distortion in a telephone line, a single test tone is transmitted theralong, and at the receiver end, harmonics of the test tone are selected by synchronous  demodulation using a signal derived from the received signal to determine the test tone frequency which is then used to provide a reference signal for the demodulation at a selected harmonic frequency. The received signal V 4  comprises three components viz (i) a signal at the test tone frequency shifted by a small amount s, due to intermodulation over the transmission channel, and phase shifted from the original test tone by amounts introduced at the send terminal, the transmission channel and the receive terminal; (ii) harmonic components of relative magnitude k n  introduced by the send terminal, frequency shifted by the transmission channel and phase shifted by the channel and both terminals; (iii) harmonic components of relative magnitude m n  introduced at the receive terminal and phase shifted therein. This signal is applied to an AGC circuit 14, to normalize the amplitude and thence passes to a frequency-phase lock loop wherein a signal corresponding to the test tone frequency shifted by s i.e. the fundamental frequency of the signal V 4  controls an oscillator 36 to provide quadrature signals 16, 18 at that frequency. Owing to the feedback loop, the phase of the two reference signals is controlled to be the average of the phase of the signal V 4 . These quadrature signals are each mixed 24, 26 with the normalized signal V 4  after frequency multiplication 20, 22, the factor of which is chosen to select a particular harmonic e.g. the second. After low pass filtering, 32, 34 the signals that remain are k sin(st + #k) + m sin #m and the corresponding cosine signal, where k, m are the relative magnitudes of the harmonics introduced at the send and receive terminals respectively, s is the frequency shift caused in the transmission channel, # m  is the phase shift of the harmonics introduced in the receive terminal and # k  is a term representing all the other phase shifts. By applying these signals to the x- and y-plates of an oscilloscope, a display results Fig. 3 (not shown) comprising a circle of radius k described at a frequency s, typically 1-4 Hz, and whose centre lies at a distance m from the origin along a line making an angle #m with the positive x-direction. If there is no frequency shift s, a dot appears, but by changing the test tone frequency, the dot can be arranged to describe the arc of a circle enabling the vectors m and k to be separated.
Patent GB-1093360-A (GB)
Title: Improvements in polymers of fluorinated olefins
Inventor: PENNECK RICHARD JOHN
IPC: C08K3/00
Filed: 1965-08-24
Abstract: Cross-linked polymers of fluorinated olefins are obtained by incorporating a Friedel-Crafts catalyst in at least one polymer of a fluorinated olefin and heating the composition. Fluorinated olefin monomers specified are hexafluoropropylene, vinylidene fluoride, vinyl fluoride, monochlorotrifluoroethylene, tetrafluoroethylene, difluoromonochloroethylene and trifluoroethylene.  Additional cross - linking agents, e.g. polyfunctional allyl monomers, peroxides and radiation may also be present. Other conventional vulcanization additives may be present.  A one or two-stage core is used.
Patent GB-872635-A (GB)
Title: Improved device for fixing sheets of paper, cardboard or the like
IPC: B42F15/06
Filed: 1957-11-21
Abstract: 872,635. Filing papers. DUCERF, G. Nov. 21, 1957 [Nov. 26. 1956]; No. 36349/57. Class 146(1). A device for fixing sheets of paper, and board or the like, particularly for supporting the file holding means 15a, 15b of a suspension filing system, comprises two plate members 1, 2 between which one or more sheets are inserted, the member 1 having a plurality of projecting pins 3a, 3b, 3c, 3d, a . portion of each pin adjacent the member 1 being recessed, and an aperture 7 adjacent to the recessed portion of each pin which aperture comprises a continuation of the recessed portion, and the member 2 having slots 4a, 4b, 4c, 4d, each slot comprising a wide portion 8 and a narrower portion 9 which grips the recessed portion of one of the pins; the pins are engaged in holes in the sheets to be fixed and are then engaged in the wide portions 8 of the slots in the member 2, one of the members 1, 2 finally being slid in relation to the other until the recessed portions of the pins engage the narrower portions 9 of the slots and the two members are thereby locked together. The members 1, 2 and the pins are moulded from synthetic resin and each of the pins has a small resilient projecting boss 10 on the underside of the recessed portion which engages in a seating 11 in the narrow portion 9 of the corresponding slot to hold the members 1, 2 more securely together. A supporting bar 12 having ends 13 bent down at right angles is formed integrally with the member 1 and engages rails forming part of a suspension filing system. A small stud 14 may be provided on the underside of the bar 12 to help locate the member 2. In modifications designed to grip a varying number of sheets. a set of members 1 having pins of different lengths or a set of members 2 having different thicknesses may be provided; the thickness of the member 2 along the portions 9 of its slots may be varied so that the space available for papers between the two members depends upon the amount of relative lateral sliding; resilient, means which permit the insertion of a greater or smaller thickness of papers may be provided between the two members.