baber/WOPTO huggingface dataset:
Patent GB-1035903-A (GB)
Title: Polyurethane foams
Inventor: BRUCE DAVID BRECKINRIDGE
IPC: C08G18/16
Filed: 1961-11-10
Abstract: A process for the production of polyurethane foams comprising forming a mixture of a poly-alkylene glycol, a blowing agent, a polyisocyanate and a catalyst, the latter encapsulated in micro-capsules, and subsequently initiating the foam-forming reaction by rupturing the micro-capsules so that the catalyst comes into contact with the reactants.  The catalyst may consist of two or more ingredients encapsulated singly or in unreactive combinations.  An activator and/or a co-catalyst may be incorporated in the catalyst, e.g. stannous octoate or another oil-soluble salt of tin may be used with an amine catalyst, e.g. triethylene diamine. The capsules may be ruptured by submitting to ultrasonic waves or by dielectric heating, e.g. by use of a medium of low melting point, e.g. 30-40 DEG  C. and high dielectric constant.  In an example an aqueous solution of triethylene diamine was encapsulated in a chlorinated hydrocarbon capsule of 1 to 2a .  Stannous octaoate was also encapsulated and 3.5 parts of the amine solution and 0.3 parts of the tin compound were added to 100 parts of polypropylene glycol and 40 parts of tolylene diisocyanate containing 0.7 parts of a silicon oil, and subjected to dielectric heating.
Patent GB-1045510-A (GB)
Title: Improvements in or relating to telescopic members
Inventor: HUDSON CLIFFORD GRAHAM
IPC: A47C3/24
Filed: 1965-09-23
Abstract: 1,045,510. Adjustable seats. JOSEPH SANKEY & SONS Ltd. Sept. 23, 1965, No. 40520/65. Addition to 1,019,134. Heading A4J. [Also in Division F2] The telescopic member of the parent Specification is modified by having a threaded shaft 11 supported by an outer tube 10 which has a portion 14 in which the shaft is a sliding fit and a portion 16 of greater cross-section than the first portion and within which a guide member 17 carried by shaft 11 is a sliding fit. The guide member 17 is in the form of a disc keyed to shaft 11 to rotate with the shaft. The movable stop element of the parent Specification is replaced by a stop element which is movable into a position to engage ribs 41 on tube 10 solely by a rotary movement. The stop element consists of a rotary peg 31, Fig. 3 (not shown) provided with an eccentrically mounted stop portion 40.
Patent GB-1084819-A (GB)
Title: Improved form of silencer for the exhaust gases from internal combustion engines
IPC: F01N1/08
Filed: 1964-10-06
Abstract: 1, 084, 819. Exhaust silencers. G. E. L. WALKER. Oct. 6, 1964 [Nov.14, 1963], No. 40718/64. Heading F1B. An exhaust silencer comprises a core 6, within casing 1 forming an annular passage 12 through which the gases flow. The core is closed by end plates 8, 9, and may have a perforated wall 7. The interior of the core may be filled with heatresistant fibrous material. The inlet pipe 4 projects right through the core to chamber 3a, from which the gases flow through annular space 12 to space 2a and then through outlet pipe 5 extending through the core. Resonant chambers 18 may be formed at the ends of the core.
Patent GB-1372126-A (GB)
Title: Amplitude-space converter more particularly for dynamic display systems on matrices
IPC: G06G7/04
Filed: 1972-09-01
Abstract: 1372126 Analogue to digital conversion L'EQUIPEMENT ET LA CONSTRUCTION ELECTRIQUE 1 Sept 1972 [28 Sept 1971] 40727/72 Heading G4H In a voltage-to-space converter, a line in a matrix of electroluminescent diodes is energized when the input voltage is exceeded by a step value of a staircase voltage associated with the line. In Fig. 1, the voltage input is compared at K 1  with a staircase wave generated by counting at C 1  clock pulses from H and decoding the count at D 1  and the count at which the input is reached is triggered into latch L 11  and into latch L 12  at the end of the counting cycle when C 1  fills. The contents of latch L 12  are decoded at D 11  and a corresponding row 2 of the matrix is energized for a time independent of the value of the input voltage. A similar arrangement for a second input voltage energizes the column line 3. If the second variable is time, the triggering input to L 12  may also be used to stop energization of the column conductors. In a modification, Fig. 2 (not shown), a respective comparator is provided for each line of the matrix, and two voltage dividers consisting of equal resistors. The nth comparator having an inputs for the input voltage, the nth tapping point of one divider and the (n+1)th tapping point of the other divider.
Patent GB-961389-A (GB)
Title: Grinding machine
IPC: B24B5/307
Filed: 1962-10-29
Abstract: 961,389. Grinding machines. HEALD MACHINE CO. Oct. 29, 1962 [Nov. 2, 1961], No. 40764/62. Heading B3D. A grinding machine for finishing a workpiece having an external surface of revolution, including support means contacting the external surface, means for rotating the workpiece about the axis of the surface, a wheelhead comprising an abrasive wheel mounted on a spindle, and means for effecting abrading action by relative movement between the wheel and workpiece, is provided with shoes 45, 46, Fig. 2, associated with a support 38, the shoes being formed of elastomer material of high resistance to abrasion. Material suitable for the shoes is defined as a solid polyurethane comprising a polyester and a diisocyanate. The invention is described as applied to a machine for the machining of the internal surfaces of ball-bearing rings having provision for maintaining a constant grinding pressure and for compensating for the deflection of the wheel spindle when under heavy pressure. The wheel head 14 is axially movable on slideways 18, 19 carried by a plate 21 supported by a base 15 which also carries a plate 31 on slideways 28, 29, this plate supporting the workhead 13 having a magnetic or other face-plate 32 on which the work 12 is secured. The plate 21 is pivoted at 25 on the base 15, an actuator 27 providing pressure by hydraulic means between the work 12 and the grinding wheel 17. A second actuator 47 opposes and balances the grinding pressure through the plate 31 on which the work-head is mounted. A further actuator 26 reciprocates the wheel 17 within the bore during grinding. A regulator R in the hydraulic system maintains the grinding pressure at a predetermined level under which the spindle of the wheel 17 deflects by a known amount, the inclination of the plate 21 through the actuator 27 being such that the wheel axis remains parallel with the axis of the workpiece.
Patent GB-947994-A (GB)
Title: Improvements in and relating to babies' napkins
IPC: A61F13/15
Filed: 1962-10-30
Abstract: 947,994. Babies' napkins. H. E. G. ROWLEY. (Federal Industries Ltd.). Oct. 30, 1962, No. 40908/62. Heading A3V. A baby's napkin of isoscelestriangular shape formed from a double thickness of cotton muslin has between the thickness an internal rectangular shaped absorbent pad of cotton gauze or muslin extending centrally from the base to the apex and sewn in position by stitching passing through all the thicknesses of the napkin and pad. A loop is attached to the apex at the outer side through which the corners brought round the waist may be passed and secured. In one embodiment a single thickness of muslin cloth is cut to form shape A, B, C, D, E, F, G, H (Fig. 1). After the folded absorbent pad is placed in the position indicated by rectangle 12, wings B, E, D, C and A, F, G, H are successively folded inwardly so that sides B, C and A, H coincide with side A, B giving the shape shown in Fig. 4. Edge H, G is hemmed and pad 11 is stitched to all thicknesses along line 13. The apex is then turned up with two small folds and secured by stitching passing through all thicknesses (Fig. 5, not shown). The edges B C, A H and A B which are coincident along parts of their length are turned under and hemmed by stitching 17. Stitching 18 secures the second longer edge of the pad. A loop 19 is attached at the apex. Fig. 6 shows the napkin ready for use, the corners of the triangle brought round the waist passing through the loop ready for fastening. The napkin may also be constructed from two separate superimposed triangles or a parallelogram folded about a diagonal.
Patent GB-1041894-A (GB)
Title: Twin furnace
IPC: F27B3/04
Filed: 1964-10-07
Abstract: <PICT:1041894/C6-C7/1> A twin iron refining furnace having two hearths A, B linked by connecting section 1 for alternating refining with oxygen and/or air from lances 8a, 8b, whereby the carbon-monoxide containing flue gases produced in one hearth during refining are drawn into the other hearth to be burnt with oxygen and/or air to preheat and melt the next charge, has its slide valve reversing means 18a, 18b mounted in horizontal, inclined or vertical cylindrical flue ducts 2a, 2b, in close proximity to the furnace. The flues may be lined with a cooling water jacket.  The furnace, which may be a tilting furnace is provided with a swivelable propelling gas jet 13 in connecting duct 5 through which air, steam or heating gas may be supplied. The slide valve Fig. 2 (not shown) comprises two parallel spaced slide plates between which an inert gas may be introduced to minimise explosion risks.
Patent GB-1087393-A (GB)
Title: Expansible fastening device
IPC: F16B13/12
Filed: 1964-10-07
Abstract: 1,087,393. Expansible inserts. M. GAMPORESE, and G. BRAMBILLASCA. Oct. 7, 1964 [Feb. 6, 1964], No. 40940/64. Heading F2H. An expansible fastening device comprises a hollow plug member 3 and a pin 1 having a smooth cylindrical surface extending over its entire length, the plug member 3 having a cylindrical bore provided with a part 6 of diameter equal to or slightly larger than that of the pin 1 and a part 7 of smaller diameter, the part 7 having longitudinal slots 9 extending over the entire length thereof. Ribs 5 of sawtooth section are provided on the slotted end of the sleeve. In a modification, Fig. 4 (not shown), a helical threaded rib (5a) is provided on the leading end of the sleeve. Both the pin and sleeve may be made of metal or synthetic plastics material.
Patent GB-1002147-A (GB)
Title: Process for the manufacture of shaped articles of regenerated cellulose from viscose
IPC: D01F2/10
Filed: 1962-10-31
Abstract: A polyether sulphonium compound is prepared by heating 600 g of polyethylene glycol having a molecular weight of 600, 200 g. of thiodiglycol and 8 g. of orthophosphoric acid in a current of CO2 at 185 DEG  C. until the condensate has a hydroxyl number of 42, blowing steam through the condensate for 4 hours at 120 DEG  C. and 15 mm. Hg, drying the product for one hour at 120 DEG  C. and 15 mm. Hg, treating the product with 220 g. dimethylsulphate at 95 DEG  C., and heating the product for one more hour at 95 DEG  C. when the exothermic reaction has ceased.  The product may be added in a small proportion to viscose prior to spinning the latter (see Division B5). Specification 896,999 is referred to.
Patent GB-1582369-A (GB)
Title: Winding for transformers and chokes having several parallel branches which are interconnected
IPC: H01F27/28
Filed: 1977-10-04
Abstract: In windings consisting of a plurality of winding conductors which are electrically connected in parallel, said winding conductors normally change their position in the winding from one winding section to the next. In the case of the present winding, each of the parallel branches (1, 2, 3) is one of a plurality of concentric cylindrical windings, which are divided by radial cross-jointed channels (4) into axial sections (5, 6, 7), and exclusively axial cooling channels (8) are provided at least within the individual sections (5, 6, 7), each of the sections (5, 6, 7) consisting of flat coils, which are wound directly on one another in the axial direction, in a double-coil circuit (a to b; b to c) having at least two turns (a to b; b to c) per flat coil, and the parallel branches (1, 2, 3) being in each case spaced apart radially one above the other within the same section (5, 6, 7). These cylindrical windings are wound in a plurality of successive operations, in each case starting at the same winding end. These windings are suitable for use as the high-voltage winding in transformers having rated voltages above 400 kV and for transformers having VA ratings less than 400 kVA and rated voltages less than 400 kV. <IMAGE>
Patent GB-1220707-A (GB)
Title: Moulding apparatus
Inventor: GROVES WALTER ROBERT
IPC: B29C45/77
Filed: 1968-08-30
Abstract: 1,220,707. Injection moulding machines. BRITISH INDUSTRIAL PLASTICS Ltd. 28 Aug., 1969 [30 Aug., 1968], No. 41525/68. Heading B5A. A reciprocable screw type injection moulding machine has means for axially advancing the screw in its cylinder while plastics material is prevented from passing through the injection nozzle. After the screw has been rotated to effect forward movement of the material and rearward movement of the screw, rotation is stopped and the screw is given a forward movement to compress the material in the cylinder. This operation may be controlled by an electric timer circuit (Fig. 3, not shown) and may be effected more than once. The compression pressure may be equal to the injection pressure. Means may be provided for heating and/or cooling the injection cylinder and for cooling the screw.
Patent GB-1488711-A (GB)
Title: Hydraulic valve
IPC: F03C1/20
Filed: 1974-09-24
Abstract: 1488711 Hydraulic reciprocating motors NIHON SPINDLE SEIZO KK 24 Sept 1974 [26 Sept 1973 12 Nov 1973 26 Dec 1973] 41535/74 Heading F1A [Also in Divisions B3 and B4] A valve, Fig. 5, for supplying oil alternately to a pair of outlet passages 2, 2', e.g. for driving a piston and cylinder type vibrator (20), comprises a spool 5 reciprocable in a housing 37, 37', 14, the reciprocations being automatically induced by the supply of pressurized oil to an inlet passage 1 in the housing and by the abutment of the spool against stoppers S. The spool 5 is mounted with clearance in a bore 4 and supported in bearings 6, 6'. Spool lands 9, 10, 10' are arranged to connect the inlet passage 1 to one of the outlet passages 2 or 2' while connecting the other outlet passage to exhaust via a port 3 or 3'. Alternative porting configurations are described, Figs. 5A and 7 (not shown). The stoppers S comprise resilient blocks or spring-loaded members 40, Fig. 5, which are axially adjustable manually or by automatic mechanical or hydraulic means to determine the frequency and centre of spool reciprocation. The hydraulic means shown comprise hydraulically actuated pistons 33. The axial adjustments result in changes in the frequency of the alternating flow and the proportions of oil delivered to the outlet passages 2, 2'. In Fig. 6 the valve B supplies liquid to cylinder chambers 49, 49' to cause a cylinder 44 to reciprocate over a piston 43. The cylinder 44 applies shock to e.g. a rock crushing tool or a pile gripped by jaws 78, the latter being carried by a casing 61 within which the cylinder 44 reciprocates. In order to vibrate the cylinder 44 equally about the piston 43, sensing ports 48, 48' and exhaust ports 51, 51' uncovered by the cylinder 44 in the event of cylinder deviation are provided. When during starting the cylinder is in its lowermost position, sensing port 48' communicates through the cylinder chamber 49 with exhaust port 51', whereby initially only the chamber 49 can be pressurized. Thus the cylinder is restored to its mid vibration position, any subsequent deviation resulting in pressurization of one or other of the sensing ports 48, 48'. Pressurization of a sensing port acts via a passage 36 or 36' on the piston 33 of the appropriate stopper S to alter the flow proportions to the passages 2, 2'. Further embodiments are described, Figs. 8-13 (not shown) in which the valve acts as a pilot valve to control a similarly constructed main valve, the latter valve having opposed pressure chambers for receiving the alternating supply and outlet passages for connection to the vibrator. In these embodiments the stopper S of the main and/or pilot valves are adjustable.
Patent GB-926829-A (GB)
Title: Improvements in composite panels
IPC: E04C2/34
Filed: 1961-11-21
Abstract: 926,829. Composite metal sheet. A. VERDUN. Nov. 21, 1961 [Dec. 9, 1960], No. 41647/61. Class 20 (2). A composite panel comprises two face-plates 2, 3 secured to the ridges of a corrugated plate 5 between them and having strengthening flutes 6 ending short of the ridges so as to leave them uninterrupted for welding &c. to the faceplates. The face-plates similarly have flutes 7 between the ridges.
Patent GB-894678-A (GB)
Title: Vapour separator
IPC: F22B37/32
Filed: 1958-12-24
Abstract: 894,678. Centrifugal separators. VISCHER, A. Dec. 24, 1958 [Jan. 10, 1958], No. 41665/58. Class 23. A separator for removing liquid and solid particles from vapour comprises a stationary chamber 19 surrounded by a heating chamber 18 which is connected between the chamber 19 and the source of vapour to be separated. Steam enters the chamber 18, which constitutes a centrifugal separator, through a port 33, steam being discharged from a port 41 and impurities through a line 47 which includes a steam trap 16. The steam from the port 41 passes through a line 48, which includes a solenoid operated valve 14, to discharge tangentially into the chamber 19. Impurities from the chamber 19 are discharged through a duct 72 controlled by a float valve 70, and steam is discharged from the chamber by a line 67 connected with a pressure cooker 11. A vertical duct leading downwardly to the port 33 may be unplugged to serve as an inlet to the chamber 18.
Patent GB-1584066-A (GB)
Title: Boxes and blanks therefor
IPC: B65D5/68
Filed: 1977-10-07
Abstract: To allow a simple design of a cardboard container which, although it is produced from a single blank, can easily be separated in the body and lid, the container body (4) has an upper section fitted with lines of weakness (5) in such a way that the periphery of the upper section can be tapered so that the lid (3) fits onto it. <IMAGE>
Patent GB-1064413-A (GB)
Title: Stabilized polyether urethanes
Inventor: KNIPP ULRICH
IPC: C08K5/29
Filed: 1964-10-15
Abstract: Elastic polyetherurethane threads are stabilized by 0.1 to 10% by weight of a monoand/or polycarbodiimide.  The polyurethane is preferably prepared by reacting polytetramethylene ether glycol of MW 700-3000 with either tolylene diisocyanate or diphenylmethane 4,41-diisocyanate and contacting the reaction product with a diamine, hydrazine or a dihydrazide. The carbodiimide may be aliphatic, cycloaliphatic or aromatic, and may be added to the starting components, to the spinning solution or applied to the threads after spinning. In Example (1) the reaction product of polytetrahydrofurandiol and tolylene 2:4-diisocyanate was converted into a prepolymer by reaction with diphenylmethane 4,41-diisocyanate in chlorobenzene.  The prepolymer was reacted with hydrazine hydrate in dimethylformamide, pigmented with TiO2, dry spun to form a thread and then either (a) contacted with 2:6:21:61 - tetraisopropyl diphenylcarbodiimide for 1 minute at 140 DEG  C., washed and stretched or (b) immersed for 2 minutes in di-(p-dodecylphenyl) carbodiimide at 140 DEG  C., washed and stretched.
Patent GB-934603-A (GB)
Title: Flexible diaphragm member
Inventor: BROWN HARRY
IPC: F16J3/02
Filed: 1958-12-31
Abstract: 934,603. Valves. PEGLERS Ltd. Dec. 21, 1959 [Dec. 31, 1958], No. 42247/58. Class 135. A diaphragm, e.g. for a valve, is made of moulded plastic, such as polyamide or polyethylene, and consists of an outer ring 10, Fig. 1, connected to a central boss 11 by a radial wall 12 at one side of a central plane of the diaphragm ; the boss 11 is adapted to control fluid flow through an orifice, not shown. In another form the wall 12, Fig. 5, is of corrugated configuration and is disposed in the central plane of the diaphragm. The radial wall lies in a plane common to the outer ring and central boss when the diaphragm is unstressed.
Patent GB-1070758-A (GB)
Title: Fumaric acid production
IPC: C07C51/353
Filed: 1964-10-16
Abstract: Fumaric acid crystals are obtained by the isomerization of an aqueous maleic acid solution in the presence of at least 2 p.p.m. by weight, based on maleic acid solution, of dodecyl alcohol and a known catalyst for the isomerization. The acid crystals are of increased size and strength.  An example describes the isomerization in the presence of dodecyl alcohol using an ammonium bromide/ammonium persulphate catalyst.
Patent GB-1282920-A (GB)
Title: Fifth wheel
Inventor: FUKIOKA RICHARD TAKASHI
IPC: B62D53/10
Filed: 1969-08-27
Abstract: 1282920 Fifth wheel couplings FRUEHAUF CORP 27 Aug 1969 42572/69 Heading B7T A fifth wheel coupling comprises a pivoted plate 12, slotted at 14, and freely pivotally mounting a pair of king pin locating jaws 16 recessed at 63, the jaws being biased open by a leaf spring 24 and having the pins 15 about which they pivot, depending from plate 12, the arrangement being such that a king pin entering slot 14 will be guided between the jaws 16 by cams 62 and on contacting the jaws cause them to rotate about pins 15 against spring 24 so they clamp around the king pin, the king pin also abutting a finger 30 of lever 29 which will rotate the lever so that a cam surface 59 thereon will free a spring loaded wedge 35, enabling it to occupy the position of Fig. 3, thereby locking the jaws in position. Shock forces are taken up by an elastomeric block 19, located between a wall 21 depending from plate 12 and a casting 18. The wedge is loaded by a spring 55 acting on a rod 42 freely attached to said wedge, the wedge movement being limited by a nut 57 on the rod abutting a flange depending from the rim of plate 12. To free the king pin a lever system 31, 48, 47 is pivoting about abutments 53, 54, 58, which alters the length of the lever arm, to withdraw the rod 42 and hence the wedge until the wedge is retained by a depending flange engaging a face 60 on the plate 12. As the king pin is withdrawn from slot 14 a spring 34 acting on lever 29 will cause the cam 59 thereon to disengage the wedge from face 60 so that it engages a face of the cam and is in a "ready-for-use" position.
Patent GB-1303093-A (GB)
IPC: G06K9/64
Filed: 1970-09-07
Abstract: 1303093 Character recognition INTERNATIONAL BUSINESS MACHINES CORP 7 Sept 1970 [9 Sept 1969] 42712/70 Heading G4R  In character recognition apparatus, a waveform representative of the character is divided into a plurality of segments, the areas of which are measured and used as a basis for recognition. The waveform, from a magnetic read head, is clipped and/or filtered, subjected to automatic gain control, and fed to integrators, each of which integrates from the beginning of a respective time zone to the end of the last time zone, the time zones being equal, successive and contiguous, and the first starting half-atime-zone after the first peak. The integrator outputs are subtracted to give the values for the respective time zones, the results being fed to correlation networks (one per possible character) followed by a maximum detector to identify the character. Each correlation network multiplies each time zone value by what this value should be for the corresponding possible character, and sums the results. An error signal is produced if the maximum output does not exceed a threshold or if the next largest is over 90% of the maximum. Alternatively, each correlation network could take the sum of the moduli of the differences (between time zone values and what they should be), and the minimum output identifies the character. In this case an error signal is produced if the minimum is above a threshold or more than 90% of the next lowest. In one embodiment, a substitution detector produces an error signal if the waveform peaks on comparison with peaks of standard waveforms indicate a different character than the correlation networks, &c.