baber/WOPTO huggingface dataset:
Patent GB-818954-A (GB)
Title: Improvements relating to motor-vehicle superstructures
IPC: B60J1/14
Filed: 1957-02-08
Abstract: 818,954. Vehicle windows. DAIMLERBENZ A.G. Feb. 8, 1957 [Feb. 9, 1956], No. 4425/57. Class 20(3) A motor-vehicle superstructure comprises side windows 5, a panoramic windscreen 16 which is curved rearwardly at the sides to meet front door pillars 9 with rearwardly bent upper portions 12, and ventilator lights 10, located one at each side of the windscreen and forming part of the same, each light being swingable about an upright axis 11 intermediate of its width, and its front edge being set well in towards the longitudinal central plane of the superstructure from the plane containing the adjoining side window, so that said axis is spaced inwardly away from the second-named plane. The fixed frame for each ventilator light 10 which comprises the respective front pillar 12, an intermediate strut 13 which separates it from a middle part 16<SP>1</SP> of the screen, the respective portions of the roof 8, and the wind gully 9, carry rubber sealing strips 14. Below each ventilator light 10, the pillar part 12 and the intermediate strut 13 are united to form the complete pillar 6. Reference has been directed by the Comptroller to Specification 765,330.
Patent GB-951561-A (GB)
Title: Improvements in or relating to machines for stripping thread from tubes
Inventor: SLATER LESLIE DOUGLAS
IPC: B65H73/00
Filed: 1961-02-07
Abstract: 951,561. Stripping bobbins. H.SLATER & SON (ENGINEERS) Ltd. May 7, 1962 [Feb. 7, 1961], No.4475/61. Heading D1F. A machine for stripping pirns and like tubes comprises a carrier 1, means for reciprocating the carrier lengthwise, supports 12,14 on the carrier to engage the ends of a tube 17 with the axis of the tube parallel to the direction of movement of the carrier, a cutter disc spindle 26 with its axis at right angles to that direction of movement to vary a cutter disc 27 in a flow that includes the axis of the tube, and means to move the spindle towards and away from the axis of the tube to enable the disc to penetrate the layer of thread on the tube as the carrier moves in one direction, and to be clear of the tube when it moves in the other direction. By depressing a button, a lever 19, rotatable between stops 28 and on which is mounted the disc 26 and a motor and belt arrangement for rotating the disc, is lowered by a cylinder 21, and as the carriage 1,on which is pivoted an interchangeable jig 10, adjustable by screws 11 so that the axis of the tube 17 is horizontal is caused to move to the left to the position shown in Fig.1 the tube is stripped. When the carrier reaches this position the stripped tube is replaced by another tube and the carriage actuates a reversing valve,to cause return movement of the lever 19 and carriage 1. A guard (not shown) is provided for the disc 27. Alternatively two cutting discs 36 (Fig. 5 not shown) one on each side of the tube may be used. If part or whole of the tube is tapered, a template mounted on the carriage is then arranged to vary the spacing of the discs. The cutting disc or discs may be of metal, abrasive or plastic (preferably reinforced).
Patent GB-702634-A (GB)
Title: Improvements in orthopaedic crutches
IPC: A61H3/02
Filed: 1952-02-20
Abstract: 702,634. Crutches. LAYTON, D. A. Dec. 4, 1952 [Feb. 20, 1952], No. 4513/52. Class 81(2) A crutch comprises a support member 1 having one end bent over for the reception of an armpit rest 3 and has a handgrip member 7 the distance of which from the armpit rest 3 may be adjusted. A number of diametrically opposed holes 5 are provided in the support member 1. The handgrip member 7 is secured in any one pair of holes 5 by a screw 6 so that it is disposed either parallel to and beneath the armpit rest 3 or on the opposite side of the support 1. The handgrip member 7 is formed from a casting covered by a rubber handgrip 9. The support may alternatively consist of two telescopically arranged tubes (not shown), the outer one of which is bent to receive the armpit rest, diametrically opposed holes being provided in both parts for receiving a handgrip member the fixing of which secures the parts together.
Patent GB-270824-A (GB)
Title: Improvements in or relating to light aluminium alloys
IPC: C22C21/12
Filed: 1926-02-17
Abstract: 270,824. Fairweather, H. G. C., (Etablissements Metallurgiques de la Gironde). Feb. 17, 1926. Alloys.-Aluminium alloys contain 1.5-5 per cent of copper, 0.3-3 per cent of nickel, 0.2-2 per cent of tungsten, and 0.2-2 per cent of magnesium. The alloys may be made by introducing magnesium and a previously formed copper - nickel - tungsten alloy into molten aluminium.
Patent GB-267104-A (GB)
Title: Improvements in or relating to the refining of lead bullion containing other metals
IPC: C22B13/08
Filed: 1927-02-17
Abstract: 267,104. Williams, G. K. March 6, 1926, [Convention date]. Drawings to Specification. Crucible furnaces.-Apparatus for removing silver and other metals from lead bullion by means of zinc comprises kettles the upper and lower portions of which are arranged to be maintained at different temperatures, each kettle being provided with a heated spout. The residual bullion discharged from the first kettle is retreated in the second. Each kettle is preferably made in two portions united by a water-cooled joint. An internal agitator may be provided.
Patent GB-178981-A (GB)
Title: Improvements in and relating to colour photography
IPC: G03C7/18
Filed: 1921-02-09
Abstract: 178,981. Gorsky, S. M. Procoudine-. Feb. 9, 1921. Colour photography; toning.-To produce a grey fourth tone in a colour photograph, the blue component is produced in such a way as to retain a portion of the silver image. The image is intensively developed and bleached in a weak bleaching solution, for example a 1 per cent solution of ferricyanide to which ammonium hydrate is added. The action is suspended at the proper moment and the print then treated successively in baths of ferrous salt, hypo, and weak sulphuric acid.
Patent GB-1056654-A (GB)
Title: Preparation of expandable thermoplastic resinous material
IPC: C08J9/22
Filed: 1965-11-04
Abstract: 1,056,654. Packaging. DOW CHEMICAL CO. Nov. 4, 1965 [Nov. 16, 1964], No. 46831/65. Heading B8C. [Also in Division C3] Expandable partly collapsed cellular thermoplastic resin particles are obtained by expanding thermoplastic resin particles using a volatile blowing agent, subjecting the cellular product at a temperature above the softening point of the resin to a pressure of 0À001 to 10 lb./sq. inch, cooling the product, and then subjecting it to a pressure (e.g. atmospheric) sufficient to cause it to collapse to a volume of less than 70% of the maximum volume attained during the expansion at reduced pressure. The collapsed particles may be used in the packaging of fragile articles by placing them and the article to be packed in a container, whence air will permeate into the particles and they will expand supporting the article, and exerting a pressure on it which is never more than atmospheric. The particles do not adhere to themselves or to most non-adhesive surfaces on reexpansion. Articles suitably packed by this method include electrical instruments and glass articles, e.g. light bulbs.
Patent GB-475717-A (GB)
Title: Improvements in and relating to cores for dynamo electric machines
IPC: H02K1/16
Filed: 1937-02-17
Abstract: 475,717. Dynamo -electric machines. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 17, 1937, No. 4781. Convention date, Feb. 18, 1936. [Class 35] [Also in Group XXII] Cores.-A stator core consists of a strip of metal wound edgewise into a flat helix with slots on its inner edge as shown ; the metal is treated to render the axes of the crystalline grains approximately equal to improve the permeability.
Patent GB-366735-A (GB)
Title: An improved plant pot for nurserymen
IPC: A01G23/02
Filed: 1931-02-16
Abstract: 366,735. Pots for growing plants. ARLIDGE, C., 5, Belvedere Road, Taunton, Somerset, and STEWART, A. F. M., Ferndown Nurseries, Wimborne, Dorset. Feb. 16, 1931, No. 4785. [Class 6 (ii).] A wire pot is formed with large openings A in its sides and bottom to allow free root growth while retaining the main root and soil. The pot is shaped either round or square and comprises a topedge wire 1, well-spaced wires 2 extending from the wire 1 down the sides and across the bottom, and one or more other wires 3 co-operating with the wires 2 to form the large openings. The pot may be tapered towards the bottom and may be provided with a paper lining at the sides and a round perforated or plain paper disc at the bottom to facilitate potting and to retard too rapid downward root growth. Specification 355,124 is referred to.
Patent GB-581380-A (GB)
Title: Improvements in telephone substation circuits
IPC: H04B3/20
Filed: 1944-03-15
Abstract: 581,380. Substation equipment. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd. March. 15, 1944, No. 4794. Convention date, May 1, 1943. [Class 40 (iv)] In a two-way automatic substation amplifier, having, for preventing acoustic reaction, a balancing network normally balanced by the line, one of the amplifiers is disabled when, during the setting up of the call, unbalance is caused by the line being open circuited. The diagram shows transmit and receive amplifiers 13, 14 coupled to the line 10 by the T-network 15 working on the same principle as that disclosed in Specification 539,763. Other coupling means such as a hybrid transformer may be also used. Closure of the dial offnormal contacts 38 operates relay 100 through coil 105, contact 101 then biassing valve 26 to cut-off. Contacts 102, 103 provide positive feed-back to valve 28 via the tuned circuit 42, 43, the resulting oscillations being applied to line via condenser 32, T-network 15, and resistance 35 hitherto short circuited by contact 104. A portion of the oscillator output applied to coil 106 via rectifier 40 causes relay 100 to remain operated after dialling ceases. Resistance 35 effectively in series with the line impedance provides a negative feed-back voltage for the valve 28. When the called subscriber's telephone closes the line the resulting drop in line impedance causes the negative feed-back to increase sufficiently to stop valve 28 from oscillating. Relay 100, therefore, falls back and the amplifier is restored to normal speaking conditions.
Patent GB-1408959-A (GB)
Title: Ripper plough assembly
IPC: E02F5/32
Filed: 1973-01-31
Abstract: 1408959 Ripper plows L O KELLEY 31Jan 1973 4856/73 Heading A1B A single or multiple plow shank support 62 is pivoted at 90 to a tool bar 20 whose diverging arms 22 and 24 are pivoted at 30 to a hitch frame 14 rigidly connected to a draft vehicle 12, a fluid pressure cylinder 38 being pivoted at 42 to the hitch frame and its piston rod 48 being pivoted at 50 to the tool bar 20, connection means being pivoted at 106, 108 to the plow shank support 62 and either to lugs 32, 34 (Fig 4), or lugs 52, 54 (Fig 13), or lugs 55, 56 (Fig 10), to provide a parallelogram or radial lift linkage. The connection means in Figs 4 and 10 comprise links 96 and 98 and in Fig 13 comprise a plate 200. The shank 66 is selectively secured in the support 62 by a pin 68 which is connected by a bell-crank to a hydraulic ram for removing the pin 68. The multiple plow shank support, Figs 8 and 9 (not shown), comprises a triangular plate supporting three shanks, the central one leading, and lateral support bars extend between the flanges 57, 58 of the tool bar 20 and lugs on the triangular plate.
Patent GB-945107-A (GB)
Title: Method of dehydrating plaster at low temperatures
IPC: C04B11/02
Filed: 1962-02-08
Abstract: <PICT:0945107/C1/1> Plaster is produced by placing gypsum in a vessel equipped with heating surfaces wherein the gypsum is first heated to about 105 DEG  C. when dehydration begins, and is then maintained under agitation by steam pulses, the velocity of which is at least as high as the fluidizing velocity of the mass being treated, at 110-135 DEG  C. until converted almost completely into a calcium sulphate semi-hydrate when the temperature is increased to 160-180 DEG  C. The steam pulses last between 0.01 and 5.0 seconds and have a frequency of 15-2000/hour but which may be increased at the beginning and end of the treatment.  During the final phase of the treatment the agitating steam may be wholly or partly replaced by air.  The steam evolved by the dehydration of the gypsum may be recycled to provide further agitating pulses. The Figure shows gypsum fed from hopper 2 into passageway 1 which is divided by weirs 18 into a series of zones, each of which has a heating element 5.  Agitating steam is fed to each zone through inlet pipes 9 and is controlled via valves 10 by timers 17.  The steam after agitating is removed at outlet 14 when it may be either discharged or recycled.
Patent GB-776203-A (GB)
Title: Improvements in or relating to power-operated typewriters
IPC: B41J7/92
Filed: 1955-02-18
Abstract: 776,203. Typewriters. SIEMENS & HALSKE AKT.-GES. Feb. 18,1955 [Feb. 18, 1954, Jan. 14, 1955], No. 4985/55. Class 100(4) In a power operated typewriter, type arms 7 are selectively actuated by a driven cam 2 through a common spring-loaded rocker arm 4 and a spring-returned push rod 6. The power of the spring 5 and the shape of the cam 2 are so designed that the rocker arm always remains in contact with the cam while the push rod 6 leaves the end 4b of the rocker arm towards the end of the stroke so that the arm 7 prints under its own momentum. The force of the imprint can be adjusted by varying the shape of the cam either by providing a series of separate cams or by moving the cam lengthwise of its shaft, in which case a graduated variation which can be shown on a scale can be procured. In a modification, particularly for page-printing typewriters, a cam follower is interposed between the cam and the rocker arm extending the width of the page plus any longitudinally adjustment that may be possible with the cam. ,
Patent GB-1099420-A (GB)
Title: A process for the production of benzenedicarboxylic acid, aliphatic dinitrile, and monosubstituents thereof by exchanging carboxylic group for cyano group
IPC: C07C51/08
Filed: 1965-02-04
Abstract: A process for exchanging at least one carboxylic acid group of an aliphatic dicarboxylic acid with at least one cyano group of a benzene dinitrile comprises heating an intimate mixture of the two starting materials at a temperature above 200 DEG C. but below that at which appreciable themal degradation takes place.  Starting materials utilized in the Examples comprise the three dinitriles of the phthalic acids and adipic, succinic and glutaconic acids, the products obtained including the three benzene dicarboxylic acids, their mononitriles, and the nitriles of the aliphatic acids.  The preferred process comprises the conversion of terephthalonitrile and adipic acid to terephthalic acid and adiponitrile. The reaction may be accelerated by the use of acid catalysts.
Patent GB-433709-A (GB)
Title: Improvements in and relating to electric battery lamps
IPC: F21L4/00
Filed: 1934-02-15
Abstract: 433,709. Electric battery lamps. WARD & GOLDSTONE, Ltd., and GOLDSTONE, S., 107, Frederick Road, Pendleton, Salford, Lancashire. Feb. 15, 1934, No. 5006. [Class 39 (ii)] An electric-battery lamp is provided with a casing made of moulded insulating material with a flared front portion formed with an aperture which has an inwardly directed edge or flange 10 to provide an abutment for a lens 11 inserted from the back of the case, a reflector 6 which forms the holder for the bulb 5 being secured to a contact strip 16 connected to one battery contact 17, while the other battery contact 18 co-operates with a switch to complete the lamp circuit through a metal strip 13 in contact with the centre contact of the bulb. Pairs of internal ribs or ridges 12, 15 in the moulded casing respectively hold the contacts 13, 16 against movement, the ribs 12 also serving to hold the battery contact 18 away from a rivet 14 which secures the contact strip 13 to the casing and receives a screw serving as the switching-member. A metal back plate 8 with flanged edges to engage side flanges 7 on the open back of the casing has sliding movement limited in one direction by either a flange 19 along its bottom edge or a flange 9 along the top edge of the casing. The back plate 8 bearing upon the battery 4 holds the strip 13 against the lamp contact, and by its pressure retains the reflector 6 against the lens 11. The reflector may be of metal or moulded insulating material to which the strip 16 is riveted. A loop or lugs may be provided on the back plate to attach it to a bracket on a belt or bicycle, or a handle 20 may be provided. Reference has been directed by the Comptroller to Specification 406,114.
Patent GB-759018-A (GB)
Title: Improvements in or relating to the production of shell moulds
Inventor: HINDE JOSEPH
IPC: B22C9/02
Filed: 1953-02-23
Abstract: 759,018. Moulding-processes. BRISTOL AEROPLANE CO., Ltd. Nov. 24, 1953 [Feb. 23, 1953], No. 5039/53. Class 83 (1). In a shell-moulding process, a primary coating of refractory and a binder is applied to a heated pattern-plate bearing a film of parting agent before dumping a mixture of refractory and a binder on the pattern to complete the mould, the primary coating being applied by a dispersion system of which the dispersion medium is gaseous, e.g. air. The primary coating-mixture may comprise a suspension of powdered refractory in a liquid vehicle and a binding material, either suspended in the liquid vehicle or dissolved therein, or an aqueous mixture of powdered refractory, a powdered or water-soluble thermosetting resin, and a silica-forming watersoluble binder such as sodium silicate or ethyl silicate. In an example, the parting-agent comprises silicone grease in white spirit and is sprayed on to the pattern. The primary coating comprises 3-6 per cent by weight phenol formaldehyde resin, alumina ground to pass through a B.S. sieve 200, and an emulsionliquid comprising 4 parts of water to one part sodium silicate, and is sprayed on to the pattern. Resin-sand mix containing 5-8 per cent by weight of resin is then dumped on to the coated pattern to complete the shell. In a modification the primary coating includes 5 per cent by weight of chromium sesquioxide powder. The thermal conductivity of the mould may be raised by using metal powder, e.g. iron or copper, or other material of high conductivity in addition to, or in place of, the refractory in the dumped mixture. To produce local chilling of a casting, the pattern-plate bearing the primary coating may be coated in places with a mixture of metal powder and 5-8 per cent thermo-setting resin before dumping the resin-sand mix. Specification 716,727 is referred to.
Patent GB-1000677-A (GB)
Title: Binding strap and method of making the same
IPC: D01D5/088
Filed: 1964-02-06
Abstract: A binding strap of rectangular cross-section formed of a polypropylene of melt flow rate below 1.0 and density 0.9-0.915 g./c.c., has a thickness of 10-40 mils., tensile strength 3867-5625 kg.)cm.2 and an elongation of 12-20%.  The strap is produced by extruding the polypropylene through a rectangular orifice, simultaneously quenching and sizing the extruded strap by passage through a pair of cold shaping and sizing rolls, cooling the interior of the strap by passage through a water bath, heating the strap to 60-150 DEG  C., drawing the strap at a draw ratio of 6-12, chilling the strap and winding it on a roll. About 60% of the molecular segments of the polypropylene may be oriented within 10 degrees of the longitudinal axis of the strap.
Patent GB-1248302-A (GB)
Title: Improvements in or relating to closed circuit medical respirators
Inventor: KIPLING B J
IPC: A61M16/00
Filed: 1969-01-30
Abstract: 1,248,302. Closed circuit respirators. PYE Ltd. 2 Jan., 1970 [30 Jan., 1969], No. 5110/69. Heading AST. In a closed circuit medical respirator comprising an expiratory line 6 including a non- return valve NR3, a purifier 15 a non-return valve NR1 and a bellows P and an inspiratory line 3 by which the purified air is returned to the patient via non-return valve NR2 is a pressure sensor 10 having adjustable bias means for controlling the drive means of the bellows during an expiratory phase. The bias means comprises a gas inlet 17 and a pressure regulator PR4. The output from the sensor 10 is fed into an amplifier 13 and thence to a controller 8 which regulates the flow of drive gas from a gas inlet L3 to a cylinder V containing a piston U which is mechanically linked to the bellows P. Further respiratory gas to charge the closed system may be applied at port N and passed through a spring loaded valve R2 into the system. The bellows are alternately expanded and constructed for inducing respiration by a fluidoperated multivibrator 18 which operates change over valves C02 and CO3 which alternately supply drive gas to ports V 2  and V 1  respectively of cylinder V and which are respectively connected to actuating cylinders Z 2  of valve R2 and Z of valve R associated with fase mask FM respectively.
Patent GB-676142-A (GB)
Title: Improvements in ploughs for use with conveyor belts
Inventor: TEBB BERNARD
IPC: B65G47/76
Filed: 1950-02-28
Abstract: 676,142. Endless - belt conveyers. MASTABAR BELT FASTENER CO., Ltd. Feb. 15, 1951. [Feb. 28, 1950] No. 5112/50. Class 78 (i). A plough for removing material from an endless belt conveyer comprises a beam having a plurality of scraper units detachably secured thereto, each unit comprising a blade of natural or artificial rubber or the like backed by a rigid reinforcing plate, to which the blade is fixed. In the embodiment shown in Fig. 1, the scraper units each comprise a rubber blade 3 backed by a plate 2 and are secured to a steel blade 5 by bolts 8 engaging nuts 6 secured to the plate 2. In a modification, Fig. 4, the blade 3 is reinforced by the part 13 of the plate 2 embedded therein and by a front plate 14.
Patent GB-803426-A (GB)
Title: Method of preparing 3-methyl-3-carboxy-cyclohexanone-(1)-2-ª‰-propionic acid and derivatives thereof
IPC: C07C401/00
Filed: 1955-02-21
Abstract: 3 - Methyl - 3 - carboxy - cyclohexanone - (1) - b -propionic acid and derivatives thereof are prepared by a process which comprises adding hydrogen cyanide (as alkali metal cyanide) to the double bond of 3-methyl-cyclohexene-2-one-1-b -propionic acid-2 and saponifying the intermediately formed nitrile in one or more steps to the acid. The acids may be esterified, for example with diazomethane, to form the methyl esters.  The preparation is illustrated by the following formul  <FORM:0803426/IV (b)/1> <FORM:0803426/IV (b)/2> <FORM:0803426/IV (b)/3> In an example: (a) 3-methylcyclohexene-2-one-1-b -propionic acid-2 (I) was dissolved in methanol and a solution of potassium cyanide added to give a mixture containing the nitrile (II), the reaction mixture was acidified with hydrochloric acid, 3-methyl-cyclohexanone-2b -propionic acid-3-carboxylic acid amide (III) was extracted and its semicarbazone prepared (distillation of the mother liquor from the amide extraction led to the crystallization of the corresponding cyclic imide); (b) the methyl ester of III was prepared by reacting it with diazomethane and the semicarbazone prepared; (c) the nitrile (II) prepared as in (a) was saponified with potassium hydroxide and the saponification product esterified with diazomethane to give 3 - methyl - 3 - carbomethoxy - cyclohexanone - (1) - 2B - propionic acid methyl ester from which a 2:4-dinitrophenylhydrazone was prepared; (d) 3-methyl-3-carboxy-cyclohexanone - (1) - 2b  - propionic acid(IV) was prepared by hydrolysing the amide (III) with potassium hydroxide; (e) 3-methyl-cyclohexanone - (1) - 2b  - propionic acid - 3 - carboxylic acid amide (III) was sublimed in vacuo to give the corresponding cyclic imide.