baber/WOPTO huggingface dataset:
Patent GB-1181197-A (GB)
Title: Improvements in or relating to Heat Motors
IPC: F03G7/06
Filed: 1968-05-28
Abstract: 1,181,197. Motors operated by expansion of a fluid. PENN CONTROLS Inc. May 28, 1968 [June 26, 1967], No.25499/68. Heading F1S. [Also in Division G1D] When the switch MS is closed, it applies current from the battery B through limit switch LS (presently closed) to the resistor 50. The heat generated by resistor 50 is transferred to the fluid 36. When the fluid 36 is heated sufficiently it expands through capillary tubing 32 and reservoir 30 actuating the piston 14 to the right. As the piston arrives at its final limit position it actuates limit switch LS to open position, de-energizing the resistor 50. As the fluid 36 cools, the piston 14 is forced to the left by its biasing springs 26 causing limit switch LS again to close. This allows the resistor 50 to be re-energized through the manual switch MS, should it be desired. The switch MS may be an automatic control such as a thermostatic switch. The fluid 36 may be silicon oil. The motor may operate a damper on a water valve.
Patent GB-745853-A (GB)
Title: Improvements in or relating to the production of acetylsalicyl chloride
Inventor: LACEY RICHARD NORMAN
Filed: 1953-09-16
Abstract: A process for the production of acetyl-salicyl chloride comprises reacting acetyl-salicylic acid with thionyl chloride under anhydrous conditions and at a temperature below 100 DEG  C. in the presence of aluminium chloride.  The reaction may be carried out at a temperature between 50 DEG  and 90 DEG  C. in an inert organic solvent, such as benzene or carbon tetrachloride, using an excess of thionyl chloride and 0.05 to 1 per cent, based on the weight of acetyl-salicylic acid, of aluminium trichloride.  The product may be reacted with the calcium derivative of isopropyl acetoacetate to obtain 3-acetyl-4-hydroxy coumarin, which may be hydrolysed to 4-hydroxy coumarin; the 4-hydroxy coumarin may then be reacted with benzylidine acetone to obtain 3-(a -acetonybenzyl) - 4 - hydroxy coumarin. Acetylsalicyl chloride may also be reacted with the calcium derivative of n-butyl acetoacetate.
Patent GB-160122-A (GB)
Title: Improved catch-hook device for domestic clothes-line props
IPC: D06F53/04
Filed: 1920-09-06
Abstract: 160,122. Sampson, A. E. Sept. 6, 1920. Clothes props.-A clothes prop is provided with a galvanized wire hook for retaining the line in position. The hook is secured to the prop by means of its inwardly projecting and sharpened ends and staples b, b<1>.
Patent GB-1141726-A (GB)
Title: A magnetic recording head
Inventor: BREWSTER ARTHUR EDWARD
IPC: G11B5/49
Filed: 1967-06-02
Abstract: 1,141,726. Electromagnetic printing. STANDARD TELEPHONES & CABLES Ltd. 2 June, 1967, No. 25608/67. Heading B6C. [Also in Division G5] Recordings are made on a magnetic medium by an effectively moving gap in a stationary recording head produced by applying to the head a gradually decaying A.C. bias signal to provide a flux which follows a path whose reluctance reduces gradually from one end of the head to the other. As shown, an offset bias winding 1 is arranged between saturable flanges 5 attached to polepieces 6, 7 so that the reluctance path reduces from end A to end G. The signal "winding" comprises a single wire 8 in a gap 16 and the materials of the polepieces and medium 9 are chosen so that the magnetic circuit between them has a rectangular hysteresis loop (Fig. 3). When the A.C. bias is applied in the absence of a record signal, successive regions across the head are demagnetized. When a record signal is present and when the bias amplitude at a particular region is just insufficient to take that region through a complete cycle and thereby change its state of magnetisation, that part of the record signal prevailing adds a relatively D.C. component to the bias so as to record that part of the signal 15 (Fig. 3) at that region, the amplitude  H1 of the record signal being insufficient by itself for recording. Transverse tracks may thus be recorded across a magnetic tape for video recording, the tape being driven either continuoulsy or stepwise, the signal being recorded while the tape is stationary. In either case, a sync. pulse is interposed between successive signals. In modified constructions, the signal winding 8 is disposed in a slot in one of the pole pieces (Figs. 4A, 4B, not shown), or in a separate core member on the opposite side of the tape from the biasing core (Figs. 6A, 6B, not shown), or a generally U-shaped core may have the winding 8 in one limb with the tape passing between the limbs (Figs. 5A, 5B, not shown). The head may be used in non-percussive printing in which a signal is recorded across the width of a drum or band, made visible with magnetic powder which is then transferred to a sheet under pressure, and finally "fixed" by heating.
Patent GB-1419917-A (GB)
Title: Epoxy resin compositions
IPC: C08L63/00
Filed: 1974-06-10
Abstract: 1419917 Curing epoxy resins DIAMOND SHAMROCK CORP 10 June 1974 25681/74 Heading C3B A composition, curable at room temp. and having a continuous liquid phase comprises: (A) a polyglycidyl ether of a polyhydric phenol or of a novolac resin or a cycloaliphatic polyepoxide or mixtures thereof; (B) a polycarboxylic acid uniformly dispersed in the liquid phase in an amount to provide 0À5-2 anhydride groups per 1,2-epoxy group; and (C) a liquid polymercaptan resin containing 1-5 OH groups per molecule, having an average of >2À5 SH groups per molecule, a molecular weight of 300-5000 and present at 3-150 parts by weight per 100 parts of (A). Typical (C) which may have the OH group on carbon atoms alpha to the SH groups are described in U.S. Specification 1,327,496.
Patent GB-150741-A (GB)
Title: Improvements in and connected with the support of motor cycle side cars
IPC: B62K27/06
Filed: 1920-09-07
Abstract: 150,741. Underwood, J. W., (trading as Underwood Bros.). Jan. 13, 1916, [Convention date]. Side-car attachments.-A motor-cycle side-car is resiliently supported at its rear end upon pivoted crank-arms connected respectively to the wheel and to the cycle and at its front end on levers carrying a crank-arm pivoted to the cycle. At an intermediate point, the side-car is connected to the cycle by a universal coupling. A crossshaft 6 mounted in bearings 7 on the side-car has arms 5, 9, the former carrying the wheel and the latter being connected to a bearing 10 for a pivot pin 11 secured to the cycle frame. Helical compression and recoil springs contained in casings connect intermediate points on the arms 5, 9 to a bar 26 secured beneath the side-car. At the front of the side-car, a cranked member 34 is pivoted to the cycle and is mounted in the ends of levers 32 pivoted to the side-car at 31, their rear ends being controlled by compression springs 33. The sidecar is connected to the cycle at a third point by an adjustable telescopic member 29 connected by a universal joint 28 to a strengthening-plate 27 on the body.
Patent GB-487770-A (GB)
Title: Manufacture of derivatives of ª -oxynaphthoic acid
IPC: C07C233/12
Filed: 1936-09-22
Abstract: Derivatives of a -hydroxynaphthoic acid are manufactured by reacting an a -hydroxynaphthoic acid halide with a colourless or slightly coloured polynuclear amino compound which, as an azo dye intermediate, has the property of forming substantive azo dyestuffs, e.g. benzidine and its homologues, 4 : 4 1-diaminostilbene and its homologues, 4 : 41-diaminoazoxybenzene and its homologues, diaminodiarylureas, di-(41 - aminobenzoyl - 4 - aminophenyl) - urea, aminobenzthiazoles, dehydrothiotoluidine, aminoazophenanthrenes or 3 : 6-diaminocarbazole.  The reaction is advantageously effected in the presence of a solvent or a condensing agent.  The products are suitable as dyestuff components for use in photographic layers for colour photography. In examples, a -hydroxynaphthoic acid chloride is reacted in the presence of pyridine with: (1) benzidine, the product formed being precipitated by diluting with ice and water and acidifying; (2) o-tolidine; (3) 3 : 31-dichlorobenzidine; (4) 3 : 6-diaminocarbazole; (5) benzidine-3 : 31-dicarboxylic acid; (6) Diazo Light Yellow 2G (the urea from aminobenzoylaminoanilinesulphonic acid); (7) 4 : 41-di-(411-aminobenzoylamino)-stilbene-2 : 21 - disulphonic acid; (8) 10 - amino - 4 - azaphenanthrene, the product being subsequently sulphonated.  Reference has been directed by the Comptroller to Specification 468,946.
Patent GB-300747-A (GB)
Title: Improvements in or relating to retaining walls, groynes or the like for use in the vicinity of rivers or tidal waters
IPC: E02B3/06
Filed: 1927-09-29
Abstract: 300,747. Stephenson, R. Sept. 29, 1927. Sea and retaining walls; groins and the like.- Retaining walls, groins, and like structures for river banks and tidal-water shores are built up, wholly or in part, of hollow concrete or like units which are then filled with sand, mud, or like material by the action of the current or the tide. Fig. 1 shows a river bank covered by cribs formed of rectangular, T-shaped, or cruciform parts 3, 5, 4 and at the lowest edge one or more open-end box-like structures 2, which become filled with mud &c. A training-wall for a river may be constructed by placing end-to-end a series opentopped tanks of concrete &c., which preferably taper upwards in cross section. These are floated into position between barges, or otherwise deposited; the trough-like structure thus formed then fills with sand &c. Two or more of such walls may be built parallel to one another so as to form a wide training-wall, the space or spaces between them being optionally provided with cribs 3 - - 5, and becoming filled with sand &c. These walls may be raised by superimposing one or more series, and may be connected by cement or otherwise. Fig. 3 shows a structure suitable for training-walls. It consists of a box-like structure with flanges 8 and strengthening-bars 9; the bottom may be open or closed. Sea walls and groins may be similarly constructed.
Patent GB-880721-A (GB)
Title: Microwave phase shifter
IPC: H01P1/19
Filed: 1960-07-25
Abstract: 880,721. Waveguide ferrite phase-shifters. HUGHES AIRCRAFT CO. July 25, 1960 [Nov. 2, 1959], No. 25852/60. Class 40(8). A microwave phase-shifter comprises a ferrite element axially aligned within a waveguide and a magnetic circuit including the ferrite element and one or more branch elements also of ferrite, some or all branch elements having windings by means of which the branches may be magnetically saturated in a direction opposite to the direction of magnetization of the internal element. As shown in Fig. 2, the magnetic circuit comprises elements 14, 17, 18, 19, 21 all made of a ferrite material having a square-loop hysteresis characteristic and a low value of magnetic saturation. The phase shifting element 14' is aligned on the axis of a rectangular waveguide 13 and is dimensioned so that its residual magnetism is equal to the residual magnetism of the outer elements 17, 18, the residual magnetisms of the latter being equal. A saturation field is applied by means of the internal winding 23 to provide a desired phase-shift of energy propagated through the device. When this field is removed, the residual magnetism remains close to the saturation value and the phase-shift persists. Energization of branch winding 24 provides a saturation field in the branch 17 equal and opposite to the field established in the branch 18, so that the net field in the internal element 14 is zero and the phaseshift is cancelled. The windings are energized by current pulses, each winding being connected to a separate pulse source. The waveguide may be made of thin metal or of plastic material internally coated with metal. Where the magnetic circuits cross the waveguide broad walls 11, these walls are cut away. and layers 29. of conductive material, e.g. silver paint, are inserted between the elements on either side of the wall. The modification of Fig. 4 uses additional branch elements 41, .43, 61, 62 made of the same ferrite material as the branches 17, 18. The residual magnetisms of the branches on either side of the guide are equal and the sum of the residual magnetisms of the branches is equal to that of the phaseshifting element 14. All the branches are provided with windings which may be selectively energized to vary the net magnetization of the phase-shifting element. A further modification (Fig. 6, not shown) is described in which the phase-shifting element extends completely from one broad wall 11 of the guide of the other. In this construction the tapered end pieces 19 need not be made of ferrite and may consist of a non-magnetic dielectric. The phase-shifting element may be situated in a length of guide of restricted cross-section coupled by stepped sections to standard waveguides.
Patent GB-795776-A (GB)
Title: Improvements in and relating to conveyor systems
Inventor: BURROWS ARTHUR THOMAS CHARLES
IPC: B65G25/00
Filed: 1955-09-12
Abstract: 795,776. Step-by-step conveyers. KING, Ltd., G. W. Nov. 26, 1956 [Sept. 12, 1955], No. 26043/55. Class 78 (1). In a reciprocating conveyer of the kind described in Specification 781,733 and having load carriers of the type described in Specification 701,610, means is provided whereby the direction of travel of a load carrier is determined by whether it is loaded or unloaded. The lower part of the load carrier 14 supports a loadcarrying bar 16 which is capable of limited vertical movement. A bar 17 is pivotally mounted on the upper part of the load carrier and is pivotally connected at one end to a link 20 which is connected to the load bar 16. Sets 21, 22 of individual plates or strip elements of the kind described in Specification 781,733 are disposed above the bar 17, one on each side of its pivot 18 and oppositely arranged. When no load is on the bar 16, the bar 17 will be in the position shown in full lines and will co-operate with the set 22. When the carrier is not loaded, the bar will co-operate with the set 21 as shown in broken lines. Since the sets are oppositely disposed, the carrier will travel in opposite directions.
Patent GB-1282953-A (GB)
Title: Ignition control device
IPC: F02P7/073
Filed: 1970-05-29
Abstract: 1282953 Ignition systems DUCELLIER & CIE 29 May 1970 [30 May 1969] 26056/70 Heading F1B An ignition control device for use in an internal-combustion engine comprises a light source 2 in the form of an electro-luminescent diode, a screen 4 which is arranged for rotation by the engine and which is provided with at least one aperture 4a through which light emitted by the light source can pass and a receiving member 7 which is arranged so as to be excited by light passing through the aperture in the screen. The electro-luminescent diode is mounted on the extension of a casing which houses the screen and the receiving member. The receiving member may be connected to a vacuum operated control device which is connected to the inlet manifold of the engine.
Patent GB-760812-A (GB)
Title: Method of cutting metals using carbon dioxide as coolant
Inventor: PHILIP THOMAS BRUCE
IPC: C10L1/14
Filed: 1954-02-04
Abstract: 760,812. Drills; machine-tool details. DISTILLERS CO., Ltd. Sept. 9, 1954 [Sept. 24, 1953; Oct. 10, 1953; Nov. 4, 1953; Nov. 6, 1953; Nov. 28, 1953; Feb. 4, 1954], Nos. 26277/53, 27914/53, 30430/53, 30710/53, 33081/53 and 3352/54. Class 83 (3). [Also in Groups XXIII and XXVIII] In a method of cutting metal in a lathe or a drilling or milling-machine, liquid carbondioxide is led into the interior of the tool B and is allowed to expand in the vicinity of the cutting-edge, the gaseous carbon-dioxide then being led away so that the cut-metal is not subjected to the cooling-action of the carbondioxide. CO 2  is led into a blind passage D in a lathe-tool B by a capillary-tube C. In modified tools, the capillary-tube runs along the length of the tool, and the gaseous CO 2  escapes by an orifice below or to the side of the cutting-edge. Fig. 4 shows a twist-drill B<SP>1</SP> with a central capillary-tube C<SP>1</SP>. A modified lathe-tool B, Fig. 6, has a passage E forming the capillarytube, and passages F around the tungstencarbide cutting-tip to allow the CO 2  to escape after cooling the tool. An additional capillarytube H, Fig. 7, can be placed below or beside the tool to supply CO 2  to cool the work. The capillary-tube C may be fixed in the union at the end of the tool by a compressed-rubber bush (see Group XXVIII). In further modifications, the carbon-dioxide escapes through the sintered material by which the tool-tip is bonded to the tool, or through fan-like passages F, Fig. 15, beneath the tool. When the capillary-tube is mounted by a rubber-bush or soldered-joint &c. in a union attached to the tool, it can remain in place when the tool is removed and reground. CO 2  can thus be supplied to cool the tool during re-grinding. Specification 749,457 is referred to in the second Provisional Specification.
Patent GB-702145-A (GB)
Title: Improvements in or relating to transverse electron-discharge travelling-wave tubes
IPC: H01J25/28
Filed: 1950-10-27
Abstract: 702,145. Velocity modulated tubes. LELAND STANFORD JUNIOR UNIVERSITY, BOARD OF TRUSTEES OF. Oct. 27, 1950 [Oct. 27, 1949], No. 26279/50. Class 39(1) A reflex velocity modulated tube has a hollow pipe waveguide 3, Fig. 1, with conductive walls and input and output connections for a travelling wave, a strip cathode 19 and accelerating and focusing electrodes 17, 25 arranged at one side of the guide for projecting a sheet beam of electrons across the guide, and a reflecting electrode 27 at the other side of the guide. The cathode 19 is indirectly heated, focusing electrode 25 is connected to the cathode and the guide has electron permeable grids 9, 15. The guide 3 is sealed through the metal envelope via insulating seals 39 and an exhaust pip 37 is arranged at one of the end walls of the envelope. Alternatively the envelope may be of glass as indicated in Fig. 4 (not shown). The spent electrons are collected by the re-entrant guide walls 11 and by other conductive parts. The device will amplify in both directions and this makes it necessary to provide a good impedance match between the ends of the guide 3 and the input and load devices to avoid setting up oscillations. Amplification will occur over a number of discrete frequency bands corresponding to electron transit times between traversals of the guide of one, two, three or any other small number of cycles so that impedance matching over all possible frequencies is difficult. The device may be modified to amplify in one direction only by giving the electrons a component of velocity in the direction of the travelling wave. This may be done by inclining the cathode, focusing and accelerating electrodes with respect to the guide, Fig. 4 (not shown) and/or by providing a transverse magnetic field by means of an electromagnet, Fig. 5 with pole pieces 57, 59. In Fig. 5 the accelerating grid 17<SP>1</SP> is preferably arranged below the level of the lower guide wall and hence below the pole pieces, instead of on the same level as the lower guide wall as in Fig. 1. Specification 701,356, [Group XIV], is referred to.
Patent GB-380255-A (GB)
Title: Improvements in spools for adhesive plaster or tape
IPC: A61F15/00
Filed: 1931-09-21
Abstract: 380,255. Holders for rolls of adhesive tape. MATHER, Ltd., W. and BERRY, E., Dyer Street, Hulme, Manchester. Sept. 21, 1931, No. 26324. [Class 18.] In a holder for a roll of adhesive tape of the type comprising telescoping hollow tubes a, b to which are affixed end discs A, B and an outer concentric casing, the discs A, B are dished outwards near their periphery to take the outer casing comprising a metal &c. ring D which is unattached to either of the flanges ; and the inner tube a is longer than the other tube and is provided with a bevelled end a<3> to facilitate pressing the discs apart. Both tubes may be slit longitudinally, and tube a is provided with an annular groove a<2> in which projections b<2>, pins, or an annular ridge on tube b can engage. The roll of tape is wound on a core c of paper, cardboard, fibre, or metal, rotatably mounted on the tube b. An unwinding slot may be provided in the ring D, a strip of adhesive material covering the slot when it is not being used. The holder is formed of sheet metal. According to the Provisional Specification, the core c may be of wood.
Patent GB-226313-A (GB)
Title: Improvements in and relating to systems of electric motor control
IPC: H02P1/20
Filed: 1923-10-22
Abstract: 226,313. British Thomson-Houston Co., Ltd., (General Electric Co.). Oct. 22, 1923. Electromagnetic switches for controlling electric motors are biassed to the open position both while the electromagnet is without current and for a short time after current has been turned on, being closed when the current has attained a steady value. In one form the switch comprises a three-limbed magnetic core with an exciting winding 10 on the middle limb and a short circuited sleeve 22 on the upper limb 11, the lower limb 13 being unwound. A pivoted armature member 16 is biassed towards the limb 13 by a spring 24. The initial effect of admitting current to the coil 10, since the limb 13 has initially less reluctance than the limb 11, is to reinforce or replace the existing bias by magnetic force. Subsequently, when the current has become steady, the magnetic force of the upper limb preponderates, thereby closing contacts 18, 19. An auxiliary armature 23 may be provided for the purpose of taking the force of the biassing spring as soon as the core is magnetized. Gravity bias may replace the spring.
Patent GB-1044228-A (GB)
Title: Spraying devices
Inventor: SCHLUMBERGER ETIENNE MAURICE
IPC: B05B7/04
Filed: 1964-06-26
Abstract: 1,044,228. Forcing liquids by gaseous pressure; ejectors. COUCH INTERNATIONAL METHANE Ltd. June 26, 1964, No. 26465/64. Headings F1E and F1R. Liquid at a controlled rate and gas or vapour at a controlled pressure are pumped to a header 1 from which either liquid or a mixture of liquid and gas or vapour may be sprayed through one or more nozzles 2. The nozzle 2 is provided with a constriction 4 and a passageway 5 so that by adjusting the flow of liquid to give a level in the header 1 above the constriction, liquid is sprayed and between the constriction and the passageway 5, a mixture of liquid and gas or vapour is sprayed. In a further embodiment, Fig. 3 (not shown), the nozzle 21 is mounted wholly externally of the header 20 and the passageway is constituted by a tube 24 extruding through a constriction 23 to a level in the header below the nozzle. It is stated that liquefied gas may be sprayed.
Patent GB-1132747-A (GB)
Title: Improvements in or relating to mechanical handling apparatus suitable for the movement of containerised goods
Inventor: CARPENTER DONALD WILLIAM
IPC: B66F9/07
Filed: 1966-06-14
Abstract: 1,132,747. Overhead cranes for stacking containers. GENERAL ELECTRIC CO. Ltd. 13 June, 1967 [14 June, 1966], No. 26496/66. Headings B8B and B8H. An overhead crane has a pair of lifting forks 27, Fig. 1, supported by a telescopic frame 11, 12, 13 which is rotatably supported from a trolley running on rails on a movable gantry 1. The frame is telescoped by a ram 17 and chains 21, 22. The frame is tiltable to a limited extent about horizontal trunnions 30 by an hydraulic ram 35, Fig. 2 (not shown). As shown the crane is in the hold of a ship and containers are lowered in by a lift 40. The electric motors driving the crane may be programmed for automatic loading. Fig. 4 shows an embodiment in which a beam 52 is supported on legs 54 with wheels 55, the rest of the crane being as described above. A diesel engine 57 drives a generator 56 to provide electric power.
Patent GB-186835-A (GB)
Title: Improvements relating to incandescent electric lamps and fans
IPC: H01K1/00
Filed: 1921-10-07
Abstract: 186,835. Berry, H. H. Oct. 7, 1921. Imitation fires.-In combinations of electric incandescent lamps and fans adapted to be rotated by hot air arising from the lamps, to produce flicker effects as described in Specifications 101,533 and 129,607, the support 1 for the fan 4 is permanently fixed to the lamp, for example by soldering it at 2 or clipping it to the cap b of the bulb.