baber/WOPTO huggingface dataset:
Patent GB-1393124-A (GB)
Title: Frequency synthesiser
IPC: H03L7/185
Filed: 1972-06-05
Abstract: 1393124 Automatic phase control ELECTRONIQUE MARCEL DASSAULT 5 June 1972 [14 June 1971] 26110/72 Heading H3A A frequency synthesizer utilizes a bi-stable circuit as a frequency changer, one of the two signals to be mixed being applied to its clock input. The synthesizer comprises a free running oscillator 10 coupled to the bi-stable frequency changer 12 by a fixed frequency divider 11. The other input to the bi-stable 12 is provided by a reference frequency oscillator 15, which also provides one input to phase comparator 21 via another fixed divider 23. The difference frequency output from bi-stable 12 is fed to the other input of phase comparator 21 via variable divider 17, and to resulting error signal output from comparator 21 is fed via filter 24 to control the frequency of oscillator 10.
Patent GB-175228-A (GB)
Title: Improvements in or relating to solder for aluminium and other metals and alloys
IPC: B23K35/26
Filed: 1921-10-04
Abstract: 175,228. Ormiston, C. P., and Barry, G. Oct. 4, 1921. Alloys.-Solders for aluminium and other metals and alloys are made bv melting tin and zinc with a previously-prepared hardening alloy consisting of 1 part of brass, 1¢ parts of aluminium, and part of nickel. One part of the hardening alloy may be combined with 28 parts of zinc and 56 parts of tin, or with 36 parts of zinc and 56 parts of tin. In melting the tin and zinc with the hardening alloy, cetacium is used as a flux and refining-agent.
Patent GB-688817-A (GB)
Title: Improvements in or relating to silylphenoxy alcohols
IPC: C07F7/18
Filed: 1951-11-08
Abstract: The invention comprises organosilicon compounds of the general formula (CH3)3SiC6H4OCH2CHR1OH, wherein R1 represents hydrogen or a methyl radical.  The compounds may be prepared by hydrolysing compounds of the general formula <FORM:0688817/IV (b)/1> , wherein R1 has the above significance and R represents a monovalent hydrocarbon radical, under conditions normal for hydrolysing silane esters, e.g. by treatment with aqueous acid, and hexaorganodisiloxanes are obtained as well as the above organosilicon compounds.  In the examples the following compounds are prepared: 1-(p-trimethylsilylphenoxy)-2-propanol, p - trimethylsilylphenoxyethanol and o - trimethylsilylphenoxyethanol. Specification 688,818 is referred to.  Organo silicon compounds of the general formula <FORM:0688817/IV (b)/2> , where R1 and R have the significance indicated above, are prepared by reacting compounds of the general formula R3SiOCHR1CH2OC6H4Cl with trimethylchlorosilane and sodium in boiling toluene.  In the examples the following compounds are prepared: 1-(p-trimethylsilylphenoxy) - 2 - propoxytrimethylsilane, 2 - (p-trimethylsilylphenoxy) - ethoxytrimethylsilane and o - trimethylsilyl - phenoxyethoxytrimethylsilane.  p - Chorophenoxy - 2 - propoxytrimethylsilane is prepared by the reaction of 1-p-chlorophenoxy - 2 - propanol and trimethylchlorosilane in the presence of pyridine,
Patent GB-704574-A (GB)
Title: An improved change-speed gear
IPC: F16H3/00
Filed: 1951-11-09
Abstract: 704,574. Reverse gearing. SOC. AUXILIAIRE D'INDUSTRIE SADI S.P.R.L. Nov. 9, 1951 [Nov. 10, 1950], No. 26302/51. Class 80 (2) A sun 3 on a driving shaft 1 meshes planets 4 on a carrier 6. connected by oppositely acting resilient freewheel elements 7, 8 either to an internally toothed annulus 11 meshing the planets or to a fixed support 19 respectively, according to the direction of rotation of the driving shaft, the annulus being connected to a second sun 12 meshing planets 13 in a carrier 14 connected to a driven shaft 17, the latter planets also meshing teeth in a stationary reaction member 18. The oppositely acting resilient free-wheel elements 7, 8 are so arranged that when the driving shaft 1 is rotated in direction B, the free-wheel element 8 slips in the fixed support 19 and the freewheel element 7 connects the planet carrier 6 to the annulus 11, whereby the first train 3, 4, 11 rotates solidly and the second train 12, 13, 18 gives a reduced drive in the direction B; when the driving shaft is rotated in direction A, the freewheel element 7 slips and the freewheel element 8 prevents backward rotation of the planet carrier 6 whereby, the train 3, 4, 11 gives a reduced drive in the original direction B which is transmitted,' as before, through the train 12, 13, 18 to the driven' shaft 17. Thus reversal of the direction of rotation of the driving shaft changes the velocity ratio of the gearing, although the driven shaft always rotates in the same direction.
Patent GB-1475796-A (GB)
Title: Wheel bearing unit
IPC: B60B35/02
Filed: 1974-06-13
Abstract: 1475796 Attaching wheels to axles SKF INDUSTRIAL TRADING & DEVELOPMENT CO BV 13 June 1974 [27 June 1973 10 Dec 1973] 26309/74 Heading B7C [Also in Division F2] A bearing assembly for a vehicle wheel comprises an outer ring 1 provided with outer raceways or fitted with separate outer race rings for two rows of rollers, two inner rings 2, 3 with inner raceways mountable on a stub axle 7, and a spacing ring 4 which is radially centred by means of roller cages 20, 21, the inner rings 2, 3 being held in place before mounting by end seals 10, 11. The wheel hub 15 is secured to the outer ring 1 by bolts 23 fastened in a mounting ring 25, or in separate mounting blocks.
Patent GB-1260245-A (GB)
Title: A device for focus maintaining in an optical instrument
Inventor: GO ROLAND LE
IPC: G02B21/24
Filed: 1969-05-23
Abstract: 1,260,245. Photo-electric control of focusing. COMMISSARIAT A L'ENERGIE ATOMIQUE. May 23, 1969 [June 7, 1968], No.26382/69. Heading G1A. [Also in Division G2-3] Automatic focusing of an optical instrument is obtained by moving the objective lens rectilinearly parallel to its optical axis in accordance with the increase or decrease in the light received in a light sensitive system after passing through an element which produces substantial spherical aberration of the image. The objective lens 1 is mounted in the centre of thin annular plate 5 which forms the armature of electromagnet 6. The image from lens 1 passes through binocular 11 one part going to an eyepiece and the other part to a spherical aberration variator 12 which converts the variations in contrast due to focusing into variations in luminous flux. This flux passes through a further binocular to lenses 18, 17, to photo-resistive cell 15 and photo-emissive cell 14. The lenses 18, 17 are adjusted so that cell 15 receives the flux from the field of view in the focusing plane and cell 14 receives flux from the same field of view but outside the focusing plane. By this arrangement changes in overall illumination produce opposite effects in the detectors 14, 15 which cancel and have no effect on the energization of the electromagnet. Variation in focus will however only affect the illumination of photoresistor 15 and will cause a change in the energization of electromagnet 6 to restore the focus.
Patent GB-726511-A (GB)
Title: Improvements in valve devices embodying "butterfly" type valve members
IPC: F16K1/22
Filed: 1953-09-25
Abstract: 726,511. Hinged valves. GENERAL MOTORS CORPORATION. sept. 25, 1953 [Oct. 14, 1952], No. 26409/53. Class 135. A butterfly valve comprises a substantially annular seat member which is engaged by diametrically opposite slots in the closure member such as to form a pivot for the latter. As shown, the seat member is secured by a flange 18 between pipe sections 4, 6 and has stepped seating portions 24, 26 interconnected by parts 28 at right angles. The diametrically opposite slots 30 of the closure member 14<SP>1</SP> engage the parts 28. The valve is operated by a rod 34 pivoted at 36 to a bracket 32 fixed to the closure member. In a modification, raised parts of the portion 24 adjacent the interconnecting parts 28 prevent movement of the closure member, when fully open, along the part 24. In a further modification, the part of the seat engaged by the closure member is flat, except for small raised portions on either side of the closure member to confine it centrally when fully open, and the closure member is stepped, the slots being formed in the stepped portion.
Patent GB-1299136-A (GB)
Title: Improvements in or relating to prostaglandins and the preparation thereof
IPC: C07F9/54
Filed: 1971-04-19
Abstract: 1299136 Silyl derivatives of prostaglandin UPJOHN CO 19 April 1971 [20 April 1970 2 Feb 1971] 26409/71 Heading C3S [Also in Division C2] Novel prostaglandin derivatives of the formula wherein G is C 1-4  alkyl, C 7-12  aralkyl, phenyl or phenyl substituted by 1 or 2 fluorine or chlorine atoms, or C 1-4  alkyl groups, Q is cis-vinylene or ethynylene, R 2  is C 1-4  alkyl substituted with 0 to 3 fluorine atoms, R 4  is H or C 1-4  alkyl, R 1a  is -Si(G) 3 , C 1-8  alkyl, C 3-10  cycloalkyl, C 7-12  aralkyl, phenyl, phenyl substituted by 1 to 3 chlorine atoms or C 1-4  alkyl groups, or ethyl substituted in the #-position with 3-chlorine, 2 or 3 bromine or 1, 2 or 3 iodine atoms, n is 1 to 4 and A is C 1-10  alkylene, substituted with 0 to 2 fluorine atoms, and with 1 to 5 carbon atoms between COOR 1a  and Q are prepared by silylating the corresponding dihydroxy acids or esters thereof.
Patent GB-224536-A (GB)
IPC: A23N12/02
Filed: 1924-11-06
Abstract: 224,536. Preti, E. Nov. 6, 1923, [Convention date]. No Patent granted (Sealing fee not paid). Washing fruit and vegetables; fish, treating. -A device for washing and softening materials, particularly foodstuffs such as vegetables, fruits and stock fish, comprises a receptacle 1 having a conical lower portion, an outlet or outlets 3, overflow holes 4 and legs 2. The rate of flow through the outlet 3 is less than the rate of flow through the tap 5, the heavy impurities escaping through the outlet 3 and the light impurities through the openings 4. A stirrer 6 is provided. The Specification as open to inspection under Sect. 91 (3) (a) states that the receptacle 1 may be of any desired shape. This subject-matter does not appear in the Specification as accepted.
Patent GB-362963-A (GB)
Title: Method of and means for extinguishing an alternating current arc
IPC: H01H33/75
Filed: 1930-09-04
Abstract: 362,963. High-tension switches. SIEMENS-SCHUCKERTWERKE AKT.-GES., Siemensstadt, Berlin. Sept. 4, 1930, No. 26470. Convention date, Dec. 17, 1929. [Class 38 (v).] In an "expansion" switch where an A.C. are at break is extinguished at the zero of the A.C. cycle by the sudden expan sion of vapour produced in the switching movement, lower values of current (which produce less vapour) are dealt with, effectively, by a sudden alteration of the volume of the vapour container itself. In the construction shown, the movable switch electrode 6 passes through a sleeve 2 on which is mounted a magnetic piston 1 constituting the upper closing-member of the liquid container 4. The piston is held in place near the surface of the liquid, so as to leave a minimum of initial vapour space, by a fixed electromagnet 7 carrying the main current. When the circuit is broken, a vapour pressure due to the are is produced in the container and lifts the piston, suddenly. at the zero of the A.C. cycle and so increases the volume of the vapour space. The resulting sudden vapour expansion extinguishes the are. The piston may be normally held down by a solenoid mounted in the container and acting on a solenoid mounted on the underside of the piston. Ether or chloroform the vapours of which condense upon reduction of volume may be used in the switch and in this case the piston is pushed into the chamber at the zero of the A.C. cycle.
Patent GB-825955-A (GB)
Title: Method of and means for carrying out nondestructive hardness tests
IPC: G01N27/80
Filed: 1956-08-30
Abstract: 825,955. Electric tests. SCHAFER, G., and SCHAFER, O., [trading as KUGELFISCHER, G. SCHAFER, & CO.]. Aug. 30, 1956 [Sept. 1, 1955], No. 26490/56. Class 37. To determine the hardness of a steel both its remanence and saturation are compared with a sample. The Specification explains that the remanence of a sample indicates the quantity of martensite present and thus the hardness but that the presence of residual austenite reduces the saturation and thus the remanence and falsifies the hardness value obtained. As shown, a U - shaped soft iron core 1 having a central limb 7 is provided with windings 5, 6 on its outer limbs which are energized with a pulsating direct voltage, for example a half-wave rectified A.C. One of air gaps 3, 4 contains the sample under test and the other the reference. The flux on the central limb is an indication of the difference of the remanence of reference and sample when the magnetizing field is a minimum and the difference of the saturation when the field is a maximum.
Patent GB-673343-A (GB)
Title: Device for rectifying alternating current
IPC: H02M1/20
Filed: 1950-10-31
Abstract: 673,343. Rectifying. RESEARCH CORPORATION. Oct. 31, 1950, No. 26532/50. Class 38 (ii). A rectifier device comprises a pair of cooperating rotary switches A, B, the stators thereof having terminals consisting of output terminals 22, 37, power input terminals 23, 36 geometrically positioned 90 degrees from the respective output terminals, and return terminals 24, 38 positioned 180 degrees from the output terminals, the rotors 13, 42 of the switches comprising conductor elements 20, 21 and 43, 44 extending over two opposite quadrants of the respective rotors, such that, upon rotation of the rotors, the power input terminal of each switch is connected alternately to the output terminal and to the return terminal in successive quarter revolutions of the rotor, the rotors being rotated synchronously at half the cyclic speed in such phase relation that when the power input terminal 36 is connected to the output terminal 37, the power input terminal 23 is connected to the return terminal 24. A switch 49 is provided so that the precipitators C, D can be supplied with alternate half-wave pulses or with full-wave rectified current to both precipitators simultaneously. In a further embodiment the rotors comprise insulating discs having conductive segments extending over opposite 90 degrees of the rotor peripheries while the co-operating terminals are in the form of blocks of shorter extent than the terminals of Fig. 1.
Patent GB-1461074-A (GB)
Title: Process for the application of magnetic recording stripes to motion picture film material
IPC: G11B5/702
Filed: 1973-06-04
Abstract: 1461074 Photographic film sound tracks AGFA-GEVAERT 30 April 1974 [4 June 1973] 26581/73 Addition to 1380052 Heading G2E The Specification 1380052 is concerned with a method of applying a magnetic recording stripe to motion picture film, in which there is applied to the anti-halation layer on the reverse side of the film a stripe of magnetizable material dispersed in an alkali-insoluble binder, in admixture with which is a cross-linking agent for the alkali-soluble binder of the anti-halation layer. In the present Patent of Addition the said cross-linking agent is a carbodiimide. The specification lists some suitable carbodiimides, and gives a number of examples of magnetic coating compositions in which they are incorporated.
Patent GB-1087015-A (GB)
Title: Compounds for treating coccidiosis
IPC: A61K31/505
Filed: 1965-06-23
Abstract: The invention comprises 6, 7, 8-trichloro-, 7,8 - di - chloro-, 7 - bromo - 6 - chloro-, and 6,7 - dibromo - 3 - [3 - (3 - hydroxy - 2 - piperidyl)-acetonyl] - 4(3H) - quinazolinone hydrobromides, and a process for preparing a quinazolinone derivative of the formula <FORM:1087015/C2/1> wherein R1 is H, F, Cl, Br, I or nitro, R2 is H, F, Cl, or Br, R3 is H, Cl, Br, or I, R4 is H, hydroxy, or methoxy, and R5 is hydrogen or allyloxycarbonyl, or a physiologically acceptable acid salt thereof, which comprises reacting a quinazoline derivative of the formula <FORM:1087015/C2/2> wherein Me is a metal, and R1, R2 and R3 are as defined above, with a compound of the formula <FORM:1087015/C2/3> wherein X is halogen, R4 and R5 are as defined above, and, if desired, when R5 is allyloxycarbonyl, hydrolysing the same, and, if desired, reacting the quinazolinone derivative obtained with a physiologically acceptable acid to produce the corresponding acid salt.  6,7 - Dichloro - 3 [3 - (3 - acetoxy - 2 - piperidyl) - acetonyl] - 4(3H) - quinazolinone is prepared by reacting 6,7-dichloro-3-[3-(3-hydroxy2 - piperidyl) - acetonyl] - 4(3H) - quinazolinone hydrobromide with thionyl chloride in a mixture of acetic anhydride and glacial acetic acid.  6,7,8-Trichloro-, 7,8-dichlor-, 6,8-dibromo-, 6 - fluoro-, 6 - bromo - 7 - chloro-, 7 - bromo - 6 - chloro-, 6,7 - dibromo-, and 6 - chloro - 7 - fluoro-4(3H)-quinazolinone are prepared by reacting the appropriately substituted anthranilic acids with formamide.  5 - Bromo - 4 - chloro - anthranilic acid is prepared by brominating 4-chloro-anthranilic acid or by heating 6-bromoisatin with sulphuryl chloride to form 6-bromo-5-chloroisatin which is then oxidized with H2O2 to form the acid.  5 - Chloro - 4 - fluoro - anthranilic acid is prepared by heating 6-fluoroisatin with sulphuryl chloride to form 5-chloro-6-fluoroisatin, which is then oxidized with H2O2 to form the acid.ALSO:A method of controlling coccidiosis in animals comprises orally adminstering thereto a quinazolinone derivative of the formula <FORM:1087015/A5-A6/1> where R1 is hydrogen, C1-6 alkyl, C1-6 alkoxy, halogen, nitro, phenyl, or benzyl and is located on one or more of the 6, 7, or 8 positions on the quinazolinone nucleus, R2 is C1-6 alkoxy, hydroxy, or acetoxy, and R3 is hydrogen or C2-6 alkenoxycarbonyl, or a physiologically acceptable salt thereof.  The anticoccidial may be incorporated in the food or the drinking water of the animals together with other anticoccidials such as the sulphonamides, e.g. sulphaethoxypyridazine or with conventional feed additives, e.g. vitamins and antibiotics.
Patent GB-1014631-A (GB)
Title: A tensile strength and elongation testing device
Inventor: BERCZI CHARLES NICHOLAS
IPC: G01N3/14
Filed: 1961-07-22
Abstract: 1,014,631. Testing threads. WATERSIDE MILL CO (BURY) Ltd. July 19,1962 [July 22, 1961], No. 26636/61. Heading G1S. To prevent slip at the gripping jaws of a tensile strength and elongation testing device for textile yarns, the ends of the test length 27 beyond each jaw assembly are wrapped around slotted bollards 25 provided with clamps 29 and connected, via a rod 22 and spring 21,with the associated jaw assembly and with a bar 28 through which tension is applied. The upper jaw 14 of each jaw assembly is movable, by means of a cam-ended lever 20 (Fig. 2), towards the lower jaw 10 for gripping the yarn, but adjustable tension springs 21 prevent the full load being applied to the portion of yarn between the jaw assemblies until a given load is exceeded. Excess loading is then operative on the portion of yarn between the jaws but slipping is prevented owing to the tension in the ends of the yarn. The jaw assemblies can move on a slideway 11 and a length scale 33 is provided. In modifications, the springs may be located between the bollards and the jaws may be replaced by hydraulic or electromagnetic means. The clamping jaws may include hydraulically- or pneumatically-loaded deformable membranes so that the yarn may be gripped without crushing.
Patent GB-628438-A (GB)
Title: Pull handles
IPC: E05B1/00
Filed: 1947-10-03
Abstract: 628,438. Pull handles. BENJAMIN, M., and BRIDGES, J. Oct. 3, 1947, No. 26699. [Class 52 (i)] A drawer or door pull handle has a substantial arch-shaped core 1 and a thin sheet metal cover 8 folded at 9 into marginal recesses beneath the arch. The ends 3 of the core may be flanged and provided with apertures 10 for securing screws.
Patent GB-687885-A (GB)
Title: Collecting device for live fish
IPC: A01K75/00
Filed: 1950-11-02
Abstract: 687,885. Fishing. PEDERSEN, C. E. Nov. 2, 1950 [July 29, 1950], No. 26721/50. Class 48. A collecting tank for live fish, which may be attached behind a trawl 14 or the like, comprises a hollow container 1 having a front inlet 2 coinciding with an inlet opening 5 of a hollow trap 4 which extends rearwardly within the container 1 and has an outlet opening 6 in the rear end of its lower surface, outlets 11 being provided in at least one side wall of the container at the front portion thereof so that water, but not fish, sluiced through the trap 4 may pass out of the container without causing disturbance of the water within the rear of the container. As shown the container 1 is attached to the trawl by ropes 15a, 15b and to the trawling vessel by a draw-line 16 and stays 17a, 17b. The rear portion of the container 1 has a window 10 to attract fish sluiced in through the inlet 2 and trap 4, and scattered holes 12, which may have adjustable shutters, to provide for a regulated changing of the water in the rear portion. The front portion of the container has a series of holes 11 the total area of which is the same as the area of the inlet opening 2 and each of the inlet and outlet openings 5, 6 of the trap 4. The trap 4 is bag-shaped and is fastened at its lower front edge 9 to the corresponding edge of the container inlet 2, the top front and rear edges being weighted and attached to ropes 7, 8 respectively which are selectively operable from outside the container to suspend the bag in its operative position as shown, to lower the rear end of the bag to close the container, or to lower the front and rear ends together to uncover the inlet 2 for access to the fish. The underside of the container 1 may be provided with ribs 13 as shown or wheels or tracks to engage the sea bed.
Patent GB-380606-A (GB)
Title: Improvements in electric stop motions for drawing frames
IPC: D01H13/16
Filed: 1931-09-25
Abstract: 380,606. Electric stop-motions for drawing-frames. SCOTT, W. J., 78, Collins Street, Woonsocket, Rhode Island, U.S.A. Sept. 25, 1931, No. 26757. [Classes 120 (i) and 120 (ii).] The circuit-closing unit of an electric stopmotion for drawing-frames comprises a sliver guide 19, Figs. 1 and 3, through which the slivers 11 travel and to which are hinged at 28 contact plates 27 supported by the sliver and contacting with a stationary bar 29 when the sliver breaks or slackens to a pre-determined degree. The slivers from cans 10 pass through openings 25 which taper towards the delivery face of the guide 19, to a diameter less than that of the sliver on the supply side. The bar 29 is adjustably bolted, using insulating washers, to the guide 19 which is on a bar 23 preferably adjustable in vertical slots 22 in brackets 20 bolted at 21 to the apron 12. A solenoid 33, Fig. 8, releases a latch 34 when contact is made, the belt-shifting rod 38 and belt-fork 39 being moved by a tension spring 27.
Patent GB-261356-A (GB)
Title: Improvements relating to obtaining the active constituents of germ glands
Filed: 1926-10-26
Abstract: 261,356. Chemische Fabrik auf actien, vorm. E. Schering. Nov. 12, 1925, [Convention date]. Medicines for internal use. - Hormones from glands, such as ovaries, corpus luteum, follicles, placenta, and testicles, are obtained by extracting the preferably comminuted and dried glands in the usual manner, for instance with acetone, saponifying the extract by heating with alcoholic soda or potash, separating the unsaponiflable portion with a solvent such as ether and distilling the ether solution so obtained to leave a residue containing the hormones. Cholesterin may be removed by dissolving the product in hot alcohol, cooling the solution to precipitate the cholesterin, which is filtered off, and distilling the filtrate to remove the alcohol. The Specification as open to inspection under Sect. 91 (3) (a) refers to the use of hot methyl alcohol in the process of removing cholesterin. This subject-matter does not appear in the Specification as accepted.