baber/WOPTO huggingface dataset:
Patent GB-1536451-A (GB)
Title: Detachable electronic flash unit for a camera
IPC: H05B41/32
Filed: 1976-04-20
Abstract: 1536451 Camera and flash unit POLAROID CORP 20 April 1976 [21 April 1975] 15790/76 Heading G2A [Also in Division H2] An electronic flash unit produces an INHIBIT signal to prevent shutter release in an associated camera until the flash capacitor 77 is fully charged. When the shutter is released, the camera produces a trigger signal TR which fires the flash and also re sets first and second switching circuits 72 and 101 which then respectively prevent re-charging and produce the INHIBIT signal. As shown, the flash unit has a switch S2 which is manually depressable to set the first switching circuit 72 which initiates charging of capacitor 77 when fully charged, a sensor 73 sets the second switching circuit 101 to remove the INHIBIT signal. Preferably sensor 73 also stops the charging current. If charge leaks away, sensor 73 restarts charging. This may continue until a capacitor 103 is charged (e.g. for ¢-1 minute), whereupon switch S2 must be pressed again. However, if the camera release S1 is pressed before this time expires, an electromagnet (32), Fig. 3 (not shown) opens the shutter, and the shutter operates a follow-focus switch (S3). This initiates shutter closure and also produces the flash trigger signal TR. If flash is not used the shutter is photo-electrically timed.
Patent GB-705045-A (GB)
Title: Improvements in apparatus for transferring workpieces between two positions
IPC: B23Q7/04
Filed: 1952-06-23
Abstract: 705,045. Rotary conveyers; loading. SYLVANIA ELECTRIC PRODUCTS, Inc. June 23, 1952 [June 23, 1951], No. 15791/52. Classes 78 (1) and 78 (4) [Also in Group XI] Apparatus for transferring a workpiece such as a tubular electric lamp between two positions, e.g. from an exhausting- machine of the turret type to a delivery station, comprises a transfer arm 62 in the form of a lever pivotally mounted on a crosshead 52 and provided with a device 26 for grasping a workpiece or tube 24 carried by the turret, and removing and: holding it while the crosshead is reciprocated and the transfer arm rotated about its pivot to move the gripping- device between its two respective positions. The transfer arm 62 is part of a bell-crank lever 28 pivoted at 50 to the crosshead 52 which is reciprocable along a pair of parallel horizontal guide-bars 56 mounted on end supports 58 on a platform 60. The second arm 64 of the bellcrank-is pivoted to a lever 66 which is pivoted to the side of the fixed platform 60 at 68. Reciprocation of the crosshead is effected by an electric motor 70 to which it is connected through a link 86, lever 80 and connecting-rod 78, the lever 80 being pivoted to the platform 60 at its lower end 84 and connected intermediate its ends to the connecting-rod 78, which is pivoted to a crank arm 74 secured on the motor shaft. The gripper 26 for taking successive tubes from the indexing turret comprises a frame 30 secured at the end of the arm 62 and providing a mounting for a pivoted latch 32, Fig. 3, which is normally urged outwardly by a torsion spring 38 on the hinge pin 36 of the latch, and a pair of hinged jaws 34 also controlled by a torsion spring which urges them towards the latch 32 to co-operate with the latter in gripping a tube. The arrangement is such that the arm 62, when swung from a horizontal position by the automatic switching in of motor 70, is brought slightly to the right of a lamp tube 24 held vertically by jaws 22 on a rod 20 depending from the turret plate 18, so that the latch 32 engages the tube at one side and is deflected inwardly until it passes the tube, whereupon the torsion spring 38 returns the latch to its normal outer position. The tube, thus gripped between the latch 32 and jaws 34, is withdrawn from the turret jaws when the arm 62 starts to return to the horizontal position. Upon the arm 62 arriving at the horizontal position an operating lever 47 for the jaws 34 is engaged by the upper end of a vertical triggering-rod 92 to release the tube upon a sloping runway formed by a pair of inclined, laterally spaced, tracks 90.
Patent GB-960278-A (GB)
Title: Improvements in or relating to identification members for electrical cables or the like
Inventor: CATLEY CYRIL ERNEST DONALD
IPC: G09F3/04
Filed: 1961-05-02
Abstract: 960,278. Cable markers. HELLERMANN Ltd. March 23, 1962 [May 2, 1961], No. 15835/61. Heading H1A. A cable maker in the form of a hollow cylindrical member has opposite ends formed to corresponding male and female profiles so that several such markers may be interfitted along a cable preventing relative rotation. In the embodiment a deformable axial rib 12 formed in the wall of the marker enables the marker to grip cables in a range of sizes.
Patent GB-1412625-A (GB)
Title: Refrigeration or air-conditioning systems
IPC: F17C6/00
Filed: 1972-09-12
Abstract: 1412625 Valves WATSCO Inc 12 Sept 1972 [13 Sept 1971] 15846/72 Heading F2V [Also in Divisions F4 and G3] In a system for charging or replenishing a refrigeration or air conditioning system from a pressurized container of liquefied refrigerant (see Division F4), the liquefied gas is vaporized in a throttle valve having an inlet 76, Fig. 4, outlet 78 and a restricted pathway formed, e.g. by the helical pathway 82 on a hollow threaded plug. When a reverse flow occurs, e.g. when the system is being evacuated, a disc 80, normally held over the opening in the plug by a magnet 90, is displaced, allowing substantially free flow. In another arrangement the throttling pathway is a capillary tube 114, Fig. 8, a displaceable disc 134 again being provided, and in a third embodiment, Fig. 11, the throttling is effected by a small aperture in the displaceable disc 160.
Patent GB-261646-A (GB)
Title: Improvements relating to electric motor controllers
IPC: H02P1/02
Filed: 1925-08-25
Abstract: 261,646. Barbour, R. H., and Walton, J. R. Aug. 25, 1925. Controllers with overload release.-In an electromagnetic overload and underload release for motor-starters the attraction of a series coil 1 upon the overload release armature 10 is weakened during by the starting period by an air gap between the fixed core and a movable core 3 serving as an underload release armature to the same coil. The starting movement of the controller spindle 32 acts through a cranked lever lever 16 to lift the core 3 from the position of Fig. 5 to that of Fig. 1, and a possible premature rise of the coil is prevented by a member 34 obstructing a core tail-piece 27, the obstruction not being removed till the starting movement of the controller spindle is completed. In a modification the underload armature lies in a parallel branch of the magnetic circuit with respect to the overload armature and is arranged to move away from the coil during the starting period.
Patent GB-1447988-A (GB)
Title: Pharmaceutical compositions
IPC: A61K9/14
Filed: 1973-04-03
Abstract: 1447988 Pharmaceutical compositions ORSYMONDE 20 March 1974 [3 April 1973] 15914/73 Heading A5B Dehydrated or desolvated pharmaceutical products are produced by a process of lyophilisation which comprises (A) mixing with the pharmaceutical composition to be lyophilised (a) a non-toxic pharmaceutically acceptable polymeric binder soluble in water or capable of giving colloidal solutions in water and which is also soluble with component (b), and (b) an organic solvent for the binder having a rate of evaporation (defined as the time taken for the evaporation of 0.5 cm<3> of the solvent poured on to a filter paper, the time taken for the same quantity of diethyl ether being taken as unity) less than 50 times that of diethyl ether to form a paste, (B) solidifying the paste at a temperature of -15 to -50‹C, and (C) lyophilising the frozen material under vacuum. The organic solvent may be dioxane, carbon tetrachloride, chloroform, benzene, cyclohexane, dimethylamine, dimethyl sulphoxide, tertiary butanol or diethylaminoethanol. The polymeric binder may be polyvinylpyrrolidone, a copolymer of polyvinylpyrrolidone and polyvinyl alcohols, a polyvinyl alcohol, a carboxypolymethylene, a polyethylene glycol, a copolymer of maleic anhydride and polyvinylmethylether, a copolymer of polyethylene and maleic anhydride and a block copolymer of ethylene oxide and propylene oxide. The active ingredient may be extract of Butcher's Broom, methyl esculetol, methylchalcone hesperidin, ascorbic acid, citric acid, magnesium aspartate or arginine. The process is particularly useful in preparing effervescent products.
Patent GB-462224-A (GB)
Title: Improvements in or relating to electro-magnetic coils for loud speakers and telephone receivers
IPC: H04R11/00
Filed: 1935-06-01
Abstract: 462,224. Electric bells. STOLOJIAN, R. June 1, 1935, No. 15956. Convention date, Nov. 26, 1934. [Class 13] [Also in Group XXXIX] The Specification as open to inspection under Sect. 91 states that the invention which consists in forming the coils of telephone receivers of a number of wires connected in parallel, either as separate coils, multiple wires, or several wires wound one on the other, is also applicable to electric bells. This subject-matter does not appear in the Specification as accepted.
Patent GB-570532-A (GB)
Title: Preparation of heptamethylenediamine
IPC: C07C209/48
Filed: 1943-09-29
Abstract: Heptamethylene diamine is prepared by a process which comprises passing the lactone of 4-hydroxypimelic acid or an ester thereof, together with ammonia in excess of the molecular proportion required, over a dehydration catalyst at a temperature of 325 DEG -550 DEG  C., and catalytically hydrogenating the so-formed heptendioic nitrile in the liquid phase at a temperature of 50 DEG  to 175 DEG  C. and under a hydrogen pressure of at least one atmosphere and advantageously in the presence of ammonia.  More specifically, in converting the lactone to the nitrile, the vaporized lactone is passed over a boron phosphate catalyst such as is described in Specification 535,187, at a temperature of 350 DEG  to 400 DEG  C. with a substantial excess of ammonia, preferably in a molecular ratio of ammonia to lactone of 8 : 1, and with a contact time of 4 to 6 seconds.  The conversion is carried out at atmospheric pressures though it is possible to use higher or lower pressures.  The catalyst may be in the solid form, broken up or compressed into tablets, or may be formed on a support such as kieselguhr.  Other dehydrating catalysts specified are the oxides of aluminium, thorium, zirconium and silicon.  Suitable esters of the lactone of 4-hydroxy-pimelic acid are the monomethyl, -ethyl, and -butyl esters.  Although the nitrile may be hydrogenated in the complete absence of ammonia it is preferred to operate in the presence of ammonia and to maintain a pressure higher and a temperature lower than the corresponding critical values for ammonia in order to keep the ammonia in the liquid phase.  Pressure ranging from 1 to 500 atmospheres may be employed in the hydrogenation but preferably pressures of 100 to 175 atmospheres are used.  Specified hydrogenation catalysts are a Raney cobalt catalyst, pyrophoric or stabilized nickel catalysts either in the massive state or supported on kieselguhr or pumice and metals selected from the base metals of the eighth group of the Periodic Table.  However, hydrogenation catalysts in general may be used including hydrogenating metals, oxides, and salts of platinum, copper and silver.  The hydrogenation may be carried out in the presence of an inert organic solvent such as alcohol, ether or a hydrocarbon solvent.  Examples are given.
Patent GB-1348762-A (GB)
Title: Percutaneous implant
IPC: A61M1/00
Filed: 1972-04-07
Abstract: 1348762 Pyrolytic carbon GULF OIL CORP 7 April 1972 [6 May 1971] 16095/72 Heading C1A [Also in Division A5] Percutaneous implants (see Division A5) may be at least partially coated with pyrolytic carbon of density 1À5-2À2 g./cm.<SP>3</SP> with a crystallite size of 20-200 Š and a coefficient of thermal expansion of 3-6 x 10<SP>-6</SP> per ‹C., the substrate having a corresponding coefficient up to 8 x 10<SP>-6</SP> per ‹C. and being, e.g. of B 4 C 3  or SiC; Ta, Mo, W or alloys thereof; mullite; or artificial graphite having a density of 1À9 g./c.c., a crystallite size of 300 Š and an isotropy of nearly 1À0. The pyrolytic carbon surface may be modified by (a) vacuum-heat treatment to remove chemisorbed gases, e.g. O 2  or (b) oxidation in dry O 2  at 700‹, 500‹ or 300‹ C., to form progressively less highly oxygenated surface groups or (c) oxidation with atomic oxygen at room temperature to form a monolayer of chemisorbed oxygen. Treatments (b) and (c) may be followed by steam autoclaving.
Patent GB-1500339-A (GB)
Title: Hydraulically operated percussive device
IPC: F03C1/007
Filed: 1975-04-18
Abstract: 1500339 Hydraulic percussive tool LINDENALIMAK AG 18 April 1975 [20 April 1974] 16104/75 Heading B4C An hydraulically operated percussive tool comprises a housing 4 and piston 2 acting on a tool 12, pressure chambers 6, 8, 10, an hydraulic high pressure channel 32 and low pressure channel 42, a first one of the chambers, 10, containing a movable distribution valve 38 which is moved downwardly by the piston during a working stroke and upwardly by fluid pressure so that the chamber 10 is alternately connected to the high and low pressure sides of the hydraulic fluid supply. Downward movement of the hammer piston is achieved by high pressure in chamber 8 and low pressure in chamber 10, movement of the piston then causing valve 38 to move down. As the piston rises due to high pressure in chamber 10, land 57 on the piston closes low pressure exit 52 and pressure fluid passes from chamber 10 around an annular recess 50 in the piston to an annular groove 48 causing excess pressure below the valve 38 thus making it rise for the next working stroke. The effect of piston on the upper edge of valve 38 is cushioned by steps 58, 60 which provide a chamber around the top edge of the valve to prevent direct contact as the chamber thus formed holds pressure fluid. Pressure accumulators 34, 46 are provided and rotary motion may be provided by a conventional motor 14. Flushing medium is forced down a central bar 28 and leaking pressure fluid can be removed from chambers 23, 22.
Patent GB-1110206-A (GB)
Title: Improvements in or relating to control devices for traffic signal installations
IPC: G08G1/07
Filed: 1966-04-13
Abstract: 1,110,206. Road traffic signals. SIEMENS A.G. 13 April, 1966 [13 April, 1965], No. 16112/66. Heading G4Q. The description is the same as that of Specification 1,110,205, but the claims differ.
Patent GB-947259-A (GB)
Title: Improvements in or relating to structures having supporting legs releasably secured thereto by screwthreading
IPC: A47B91/00
Filed: 1962-04-27
Abstract: 947,259. Furniture joints. E. HENSEL. April 27, 1962 [June 7, 1961], No. 16151/62. Heading A4W. [Also in Division F2] A bushing of resilient synthetic resin, e.g. nylon, has a cylindrical shank 1 with a screw-threaded bore 3 and a head 2 which may have a screwdriver slot 4, Fig. 8. The shank 1 may have longitudinal grooves 5, Fig. 4, to resist rotation when the bushing is located in a bore of part of a piece of furniture &c. A leg 8 bears a threaded stud 9 for screwing into the bushing and if the leg is oblique as shown, the screwdriver slot 4 enables the bushing to be turned for orientation and tightening, otherwise the bushing may be unslotted and a press fit in a chipboard member, Fig. 5 (not shown). The bushing may be located in a bore in a reinforcing member 10 glued to the chipboard member 7 and providing a bore 11 (normally closed by a plug 12) for access to the slot 4 or providing a recess, Fig. 7 (not shown), for receiving the head 2.
Patent GB-642283-A (GB)
Title: Improvements in and relating to the sorting of small articles
IPC: B07C5/02
Filed: 1948-06-16
Abstract: 642,283. Jigging conveyers. OKOLICSANYI, F., and GUNSON (SEEDS), Ltd., R. W. June 16, 1948, Nos. 16179 and 19010. [Class 78 (i)] [Also in Group XL (b)] A jigging conveyer for feeding beans to a photo-electric sorting apparatus comprise a hopper 18 feeding a table 19, the table being mounted on blade springs 20, one or more of which forms the armature of an A.C. fed electromagnet 20. A baffle ensures that a single layer only of beans passes from the hopper to the table and the beans are made to travel in single lines by grooves 22 in the face of the table. In a further construction, Fig. 3 (not shown), the table is sector-shaped, the grooves terminating on an arc of a circle.
Patent GB-515484-A (GB)
Title: Improvements in electric apparatus for automatic control of a variable condition
IPC: G05D7/06
Filed: 1938-05-31
Abstract: 515,484. Automatic control systems. STEWART, A. M., JACK, H. M., and WIDGERY, M. (Representatives of STEWART, J. G.). May 31, 1938, No. 16291. [Class 38 (iv)] Temperature.-The flow rate of a combustible medium is controlled in accordance with the heat produced in combustion by two control circuits tending respectively to increase and decrease the flow, each circuit including a reciprocaing contact 20 and an adjustable contact 15, and each of the latter being adjustable by an instrument responsive to the heat and connected at 14, for example, to a member 12 so as to effect an adjustment of each in an opposite sleeve to the other. The difference between the times of closure of each circuit is a function of the divergence of flow rate from that desired according to the instrument. The control circuits may include an oppositely acting field winding of a motor actuating a valve in the supply of medium. The reciprocation of the contacts may be effected by a continuously driven cam 18, or by using two cams. The closing of the contacts may take place simultaneously instead of alternately.
Patent GB-1602898-A (GB)
Title: Circuit for detecting a voltage
IPC: G01R19/165
Filed: 1978-04-25
Abstract: A voltage detection integrated circuit including a voltage regulation circuit for controlling the operation thereof is provided. The voltage detection integrated circuit includes a reference voltage circuit for producing a predetermined reference voltage, a voltage converter for converting a detected voltage for measurement and a comparator circuit for comparing the level of the reference voltage to the level of the converted voltage and for producing a comparison signal representative of the difference in voltage levels compared thereby. The voltage regulation circuit is coupled to the comparator circuit and the reference voltage circuit and/or voltage conversion circuit for selectively adjusting the level of the reference voltage produced by the reference voltage circuit and/or the converted voltage produced by the voltage converter, to thereby control the comparison signal produced by the comparator circuit.
Patent GB-943724-A (GB)
Title: Glass composition and process of making
IPC: G01T3/06
Filed: 1962-04-30
Abstract: A glass composition for use as a scintillator consists of from 54-75 mole. per cent B2O3, 3.5-9 mole. per cent Ce2O3 the balance being a mixture of Al2O3 and Na2O in the mole. ratio of between 1 and 1.5.  A batch composition consisting of cerous oxalate, ammonium pentaborate, sodium carbonate and hydrated alumina in the desired proportions is melted in a non-oxidising atmosphere (e.g. argon) for 3 hours at 1400 DEG  C.-1500 DEG  C. cooled to 1300 DEG  C. for refining then to 400 DEG  C. and finally cooled to room temperature for a period of from 12 to 18 hours for annealing. Ammonium tartrate may be added to the batch to ensure that the cerium is in the trivalent state.
Patent GB-708602-A (GB)
Title: A process for producing phenols and carbonyl compounds from aromatic hydroperoxides and the resulting phenols and carbonyl compounds
Filed: 1952-06-30
Abstract: Phenols and carbonyl compounds are prepared by decomposing an aralkyl hydroperoxide of the formula <FORM:0708602/IV (b)/1> where Ar is an aryl group which may be substituted by an alkyl or alkoxy radical, R1 is hydrogen or an alkyl group and R11 is an alkyl group, by the action of heat in the presence of cupric sulphate and/or calcium sulphate.  The hydroperoxide may be used in the pure state or may be dissolved in an organic liquid.  The solvent is preferably a compound which is not basic in the sense of being an electron donor.  Suitable solvents are hydrocarbons, alcohols, ethers, ketones and halogenated hydrocarbons.  The cupric sulphate catalyst is preferably used in the anhydrous state and the calcium sulphate is preferably partially dehydrated.  Specified hydroperoxides are those derived from cumene, p-tertiary butyl cumene, p-cymene and p-methoxy-cumene.  When R1 in the above general formula is an alkyl group, a ketone is obtained as the carbonyl compound, whereas when R1 is a hydrogen atom, an aldehyde is obtained. In examples, cumene hydroperoxide is decomposed by heating with (1) cupric sulphate, and (2) calcium sulphate to give acetone and phenol.  Specification 649,286 is referred to.
Patent GB-1144717-A (GB)
Title: Improvements in display stands
Inventor: SUMNER THOMAS
IPC: A47F1/08
Filed: 1967-04-11
Abstract: 1,144,717. Article display and dispensing stand. SALES ACHIEVEMENT Ltd. 27 Sept., 1967 [11 April, 1967], No. 16499/67. Heading A4T. A display stand for cigarette packets comprises a storage unit supported on telescopic pillars 13, 14 and clamped detachably with screw clamps 16, or permanently with a screwed bracket (Fig. 4, not shown) to the back of a counter. At the top, the pillars may be screwed or welded to the bottom of the storage unit or detachably connected by horizontal plates 12 slidable within a flanged channel 10 and clamped by screws 18. The storage unit has a transparent plastics front 23 and back 24, with a fillet (28, Fig. 3, not shown) to push the bottom packet (26) from a column of packets rearwards so that it can be withdrawn through the space between the bottom of the back sheet 24 and the base 8. Partitions 21 fit adjustably into slots in strips 22 fitted into recesses along the top 7 and bottom 8 of the unit. A centre partition 9 divides the back into two. The strip 31 across the unit top may carry information and trays 33 may be fixed in brackets 32 outside either end.
Patent GB-1113190-A (GB)
Title: Adjustable lever
Inventor: SMITH JOSEPH FREDERICK
IPC: F16H51/02
Filed: 1967-04-12
Abstract: 1,113,190. Links. ROLLS-ROYCE Ltd. 12 April, 1967, No. 16658/67. Heading F2K. A variable geometry lever comprises, on an arcuate portion 13 of an arm 10, an axle assembly 15 including two spherical joints 18, 21, the centres of the joint 18 and the arcuate portion 13 being coincident so that the assembly is pivotally adjustable relative to the arcuate portion 13 about the centre of the joint 18. A threaded rod 16 having a head 17 extends through a slot (24), (Fig. 2, not shown), in the arcuate portion 13, which is serrated on its convex edge 14. A nut 23 on the rod 16 clamps the joint 18, a spacer 19, the arcuate portion 13, a serrated washer 20, the joint 21, and a washer 22, against the head 17, the nut being slackened for adjustment of the axle assembly. Links (25, 26) (Fig. 2, not shown), extend from the outer members of joints 18, 21, respectively.