baber/WOPTO huggingface dataset:
Patent GB-736009-A (GB)
Title: Improvements in the manufacture of patterned thermoplastic sheet material
Inventor: GRIFFITHS LESLIE HERBERT
IPC: D06N7/00
Filed: 1952-05-16
Abstract: Compositions for use in making floor-coverings comprise vinyl chloride-acetate copolymer, plasticizer, asbestos fibre, pigment, limestone, and lead carbonate or polyvinyl chloride, asbestos fibre, tricresyl phosphate, lead carbonate, limestone and pigment, e.g. Hansa yellow, Monastral Blue and red iron oxide.ALSO:A variegated sheet is made by calendering either (a) a mixture of small pieces of thermoplastic compositions of two or more colours or (b) a supporting sheet of thermoplastic composition with small pieces of thermoplastic compositions of one or more other colours.  Then one or more of these variegated sheets is superposed on a base sheet of a compatible thermoplastic composition of substantially the same colour as one colour in the variegated sheet, the sheets are joined superficially, and the joined sheets are hot-calendered with substantial reduction of thickness: this second calendering may be at right-angles to the first calendering.  The thickness of the base sheet may be 5-20 times that of the variegated sheet.  The thermoplastic compositions may have a basis of polyvinyl chloride or copolymer of vinyl chloride with vinyl acetate or vinylidene chloride.  In one example a variegated sheet 0.040 inch thick is made by hot calendering on a three-bowl calender from 80 per cent of cream colour crumb and 20 per cent of green colour crumb, the first nip producing a sheet 0.06 inch thick and the second nip reducing the sheet to 0.04 inch.  This sheet is stored for future use.  Then a similar sheet 0.4 inch thick having cream colour only is made on a hot mill, and whilst it is still hot the variegated sheet, preheated, is placed on it and the composite sheet is run through the mill to reduce its thickness to 0.4 inch. Finally the composite sheet is trimmed and fed through a three-bowl calender at right angles to the first calendering, the first nip reducing the sheet to 0.05 inch thick and the second to 0.03 inch. To produce long lengths the composite sheet is cut into planks of regular width that are fed successively to the first nip.  In another example two variegated sheets are placed together and joined to the base sheet.  The material may be adhered to a backing sheet.
Patent GB-972898-A (GB)
Title: Improvements in or relating to the polymerization of olefin oxides
IPC: C08L71/02
Filed: 1963-03-28
Abstract: A process for the manufacture of an olefin oxide polymer comprises polymerizing one or more olefine oxides in the presence of a composite catalyst system consisting of (a) ZnRR1 where R and R1 may be the same or different hydrocarbon radicals, (b) water and (c) an amine, these being from 0.2-0.5 mols of water and from 0.1-0.8 mols of amine per mol of organo-zinc compound.  Specified olefines which may be polymerized are ethylene, propylene, butylene and cyclohexene oxides; allyl, phenyl, ethyl, propyl and cyclohexyl glycidyl ethers and glycidyl methacrylate.  Comparative examples describe the polymerization of isobutylene oxide, propylene oxide, a copolymer of 90% isobutylene oxide and 10% phenyl glycidyl ether and a copolymer of 93% isobutylene oxide and 7% propylene oxide.  The polymers, particularly of isobutylene oxide, may be formed into fibres and films (see Division B5).ALSO:A polymerization catalyst consists of (1) an organozinc compound of formula ZnRR1 in which R and R1 may be the same or different hydrocarbon radicals, (2) water, and (3) an amine, there being 0,2-0,5 mols of water and from 0,1-0,8 mols of amine per mol of organozinc compound. Examples of (1) are diethyl zinc, dibutyl zinc and ethylpropyl zinc.  Examples of (3) are diethylamine, triethylamine, isopropylamine, n-butylamine, t-butylamine, cyclohexylamine, aniline, N-methylaniline, N-N-dimethylaniline, benzylamine, a -phenylethylamine, b -phenylethylamine, diphenylamine and phenyl-a -naphthylamine. Comparative examples illustrate the advantages of the (3)-component catalysts over conventional (2)-component counterparts.
Patent GB-1367256-A (GB)
Title: Filling hoppers
IPC: E02F3/90
Filed: 1972-03-16
Abstract: 1367256 Suction dredger BAGGERMAATSCHAPPIJ BOS & KALIS BV 16 March 1972 [31 March 1971] 12463/72 Heading B7A [Also in Division B8] An apparatus for filling a hopper 2 of a dredger 1 comprises a pump 4 for sucking slurry up a pipe 3 from the river or sea bed and pushing it along a supply pipe 5 to a delivery line 7, which is hinged at 6 to permit vertical movement of a discharge mouth 8 of the line 7 relative to the hopper bottom, the whole delivery system apart from the mouth 8, being closed to atmosphere. The delivery line 7 is pivotable in a vertical plane by a winch apparatus 9 or alternatively by an hydraulic cylinder. The movement of the mouth 8 may be automatically controlled to maintain the mouth just above material settled in the hopper bottom.
Patent GB-101413-A (GB)
Title: Improvements in Air Brakes.
Inventor: PIEPER HENRI
IPC: B60T13/68
Filed: 1916-09-04
Abstract: 101,413. Pieper, H. Sept. 4, 1915, [Convention date]. Addition to 101,153. Fluid-pressure. - Relates to means for making good losses of air by leakage from the brake system described in the parent Specification. According to this system the pressure air is returned from the brake cylinder 3 to the reservoir 4 after an application by a solenoid 6 or motor acting directly upon the brake piston 1. After the completion of the releasing stroke of the piston and the de-energizing of the solenoid 6 and the closure of the control valve 2, the piston is caused to recoil a short distance, as shown in Fig. II., by an electro-magnet or by a spring 51, which is compressed during the completion of the release stroke. The extent of the recoil movement is such as to reduce to atmospheric pressure the residual air in the clearance space of the cylinder 3, if no leakage has occurred. If there has been leakage, however, the pressure of the residual air falls below atmospheric, and air then enters the cylinder either by a valve 8 or past the piston packing. According to the parent Specification, the circuit of the solenoid 6 is automatically broken at the completion of the release stroke; in order that with the system shown in Fig. II., it may not be re-established by the recoil movement of the piston, a switch 9 having arms 10, 11 for engagement with a cam 12 on the piston-rod, is employed. The switch is closed when the piston moves out beyond the recoil position. The Specification as open to inspection under Sect. 91 (3) (a) describes also the subject-matter of the divided Application 113,449. This subjectmatter does not appear in the Specification as accepted.
Patent GB-695416-A (GB)
Title: Improvements in or relating to radio transmitters
Inventor: COOPER VICTOR JAMES
IPC: H03C1/06
Filed: 1951-05-29
Abstract: 695,416. Aromatic voltage control systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Jan. 31, 1952 [May 29, 1951], No. 12617/51. Class 38 (iv). [Also in Group XL (c)] In a transmitter in which an oscillator 1 feeds a grid modulated amplifier 2, the oscillator output is maintained constant by feeding it to a peak rectifier 3 followed by an amplifier 4 controlling an electronic regulator 5 between the H.T. supply 6 and the oscillator 1.
Patent GB-295429-A (GB)
Title: Infinitely variable gear
IPC: F16H37/08
Filed: 1927-05-11
Abstract: 295,429. Lawson, J. C. May 11, 1927. Variable-speed gearing comprises two or more cam members 30, 31, Fig. 1, reciprocated along a driving-shaft 23 and connected by variable levers 42 to screw-and-nut devices 36, 37 which reciprocate with variable throw and drive shaft 28 at variable speed. The cams 30, 31 are kept from rotating and are biased towards the two ends of rotary cam barrel 29 by springs 30<b>. The speed is varied by moving the fulcra 45 of the levers endways of the levers by actuating a pull rod 55. The screw one-way driving-devices are constructed as shown in Fig. 4. The shell 36 does not rotate. It carries bowls 36<b> so that, in the downward stroke, a nut 40 slips round loosely over the spirally-grooved shaft 28. On the upward stroke, an outer ring surface 40<a> on the nut is gripped frictionally by the end of the shell 36 sc that the nut during this stroke imparts rotary motion to the shaft 28. In Fig. 1 is shown this variable gear applied to control an element of an epicyclic train, which transits the main drive. The driving-shaft 8 is fast to the carrier 9 of planets 13, which mesh with a gear 15 fast on driven shaft 16 and with controlled gear 14. The gear 14 is geared to shaft 23 by a train 21. The shaft 8 is geared to shaft 28 by a train 27.
Patent GB-840497-A (GB)
Title: Improvements in and relating to the treatment of polymers
Inventor: TELFER ROBERT GILMOUR JAMIESON
IPC: C08F6/02
Filed: 1957-04-18
Abstract: Metal-containing catalyst residues are removed from solid polymers of ethylenically unsaturated hydrocarbons by a process p  which comprises treating the polymer with an alcohol containing at least nine carbon atoms in the molecule in the presence of an inert solvent, separating the solid polymer from the solvent and recovering the polymer.  Specified alcohols are nonanols, decanols and dodecanols, e.g. 3,5,5-trimethylhexanol-1 and isodecanol.  The polymer may be polyethylene or polypropylene prepared by polymerization in the presence of catalysts formed by reacting titanium tetrachloride, titanium trichloride or vanadium tetrachloride with an aluminium alkyl, e.g. aluminium triethyl, an alkyl aluminium halide, a complex alkyl of an alkali metal and aluminium, e.g. lithium aluminium tetraethyl, or an alkali metal alkyl.  The inert solvent is preferably a hydrocarbon and may be propane, butane, pentane or propylene.  Treatment with the alcohol is preferably effected at 70 to 80\s2 C. in the presence of an aluminium halide or aluminium alkyl halide, e.g. aluminium bromide, aluminium chloride, ethyl aluminium dichloride or ethyl aluminium sesquichloride, which may be added in suspension or solution in a solvent, e.g. ether.  After separating the polymer, e.g. by filtration, it may be further washed with a hydrocarbon, if desired in several stages in the first of which small amounts of alcohol may be added to the washing-liquid.  Preferably the polymer is finally treated with steam.  Specification 804,079 is referred to.
Patent GB-580658-A (GB)
Title: Improvements in or relating to stuffing boxes for rotary pumps for working fluids such as acids and lyes
IPC: F16J15/36
Filed: 1944-07-04
Abstract: 580,658. Stuffing-box substitutes. ROTHELI, R. July 4, 1944, No. 12759. Convention date, Feb. 5, 1943. [Class 122 (v)] In a stuffing-box for rotary pumps for working acids and lyes comprising mutually sliding sealing surfaces arranged in a plane perpendicular to the shaft axis, an elastic sleeve 3 is firmly fixed to a carrier sleeve 2 by means of axial pressure influencing axially movable sealing members 4a, 4b, 5 and 6 so that the sealing surfaces so formed are pressed together. The members 4a, 4b are of porcelain and rotate with the carrier ring 2 and elastic sleeve 3 the whole being carried by the shaft 1, whereas sealing members 5, 6 also of porcelain are held stationary. Axial pressure is transmitted from gland screws 13 through the member 6 to compress the elastic sleeve 3 and hence press together the sealing surfaces. Annular rings 9 of softer porcelain may be inserted between the rotating and stationary sealing members. Leakage fluid acts as lubricant and collects in an annular space 11 to pass through a passage 12 for recirculation.
Patent GB-580432-A (GB)
Title: Improvements in or relating to pressing tools for manufacturing blades for turbo-machines
IPC: F01D5/30
Filed: 1944-07-05
Abstract: 580,432. Making turbine blades. SULZER FRERES SOC. ANON. July 5, 1944, No. 12801. Convention date, Aug. 9, 1943. [Classes 83 (ii) and 83 (iv)] Forging; extruding.-A light metal blade for a turbo-machine is made by pressing a rough piece of metal in a die 2 corresponding, to the root section 17 and forcing some of it through a die 3 which can be adjusted about its axis and correspond to the blade section 18. The thickness of the root is determined by a stop ring 6 of the plunger 5 engaging the .die 2. The dies 2 and 3 have a circular cross-section externally so that they can be angularly adjusted relatively and are held by a key, not shown, inserted in selected ways 11 ... 14, Fig. 3. The blade 18 may be of twisted form or may be guided by a sleeve 7 &c. The dies are tapered to fit a block 1 to facilitate removal by a plunger 10. The block may have electric heating means 8 and a thermo-element 9 for determining its temperature. The mouth of the die 3 at 30 is curved to correspond to the flow lines of the metal being operated upon.
Patent GB-668037-A (GB)
Title: Improvements relating to electric switches of the push button type
IPC: E21F17/18
Filed: 1950-05-22
Abstract: 668,037. Press-button retractive switches. SIEMENS-SCHUCKERT (GREAT BRITAIN) Ltd., and CROCKER, W. G. May 22, 1950. No. 12815/50. Class 38 (v). [Also in Group XXXVI] The terminals of a switch, especially for signalling systems used, e.g. in coal mines, comprise spikes 13, on to which a double, or two single, core cables are impaled, the inner, rounded, ends of the spikes forming contacts adapted to be bridged by a disc contact 20 carried by a resilient diaphragm 19. The spikes 13, are embedded in a moulding 8 secured in a casing 1 by a ring 9 screwed into the casing, the edge of the diaphragm 19 being secured between the moulding 8 and the casing so as to render the latter dustproof. The casing has two opposing slots 2 in line with a recess 10 in the moulding, into which recess the spikes project so as to impale the cable when laid in position therein, the cable being pressed on to the spikes by a plug 4 which screws into the casing.
Patent GB-311323-A (GB)
Title: Improvements in refrigerating plants of the absorption or adsorption type
IPC: F25B17/00
Filed: 1929-04-26
Abstract: 311,323. Universal Refrigerators, Ltd., (Assignees of Amundsen, I.). May 9, 1928, [Convention date]. Refrigerating, absorption machines for. - The generator-absorber or adsorber is heated by steam generated in a jacket 2, communicating through a syphon 4 with a cooling-water tank 5, by a gas burner 11 the supply of gas to which is controlled by the mercury level in the burner covering or uncovering the mouth of a gas supply pipe 12 having a pilot jet 13. The mercury level is dependent on the pressure in a gas-filled capsule 15 disposed in a space connected to the jacket and the head of cooling-water in the jacket. The gas supply pipe 12 is shown open and the burner heats the 'water 7 in the jacket, the steam generated heating the generator-absorber 1 and the capsule 15 so that the pressure inside the capsule rises and forces mercury out of the tube 16 into the tubes 10. 11, 18 until the gas supply pipe is cut off and the flow of cooling water through the pipe 17 to the outlet 19 stopped. Owing to the closing of the outlet 19, the water level in the tank 5 rises and fills the syphon 4 which induces the flow of water through the jacket to the outlet 9. The outlet 9 communicates with the tube 10 through which the head of water in the jacket maintains the mercury level in the burner until the cooling- water supply to the tank is shut off. Specifications 229,702, 266,683 and 291,039 are referred to.
Patent GB-1217633-A (GB)
Title: An electromagnetic relay
IPC: H01H50/02
Filed: 1969-03-12
Abstract: 1,217,633. Electromagnetic contactors. OMRON TATEISI ELECTRONICS CO. 12 March, 1969 [26 March, 1968], No. 12988/69. Heading H1N. An electromagnetic contactor or relay has a plunger armature type electromagnet secured to a contact unit with the plunger armature, when in its biased unattracted position, acting on a contact actuator to hold it against the bias of contact actuating springs which act on movable contacts engaged by the actuator. The electromagnet 10 has a yoke 15 with four outer limbs, e.g. 15a, 15b and a short fixed core 17 co-operating with the plunger armature 19 which is biased downward by a spring 18. The electromagnet 10 is held on to the base 22 of the contact unit 11 by a clip 61 fitting in grooves 71, 72, 73, 74 and below projections 75, 76 which also engage in apertures 81, 82 to retain a transparent cover 12. Partitions 25, 26 projecting from the base 22 divide the space above the base into 3 chambers 27, 31, 28 of which the outer ones are contact chambers each with two lower fixed contacts 42, 44 and two upper fixed contacts co-operating with a contact bridge 45 urged by a spring 46 toward the upper contact pair 41, 43. The contact actuator 51 is slidable in a transverse slot 36 and engages the contact bridges 45 so that the armature spring 18 acting on the armature 19 urges it against the actuator 51 which holds the contact bridges 45 in engagement with the lower contacts 42, 44 against the bias of springs 46. When the coil 14 is energized the armature moves upward and permits the springs 46 to move the contact bridges 45 to the upper positions. Fig. 10 shows an alternative contact actuator having bifurcated ends 51a, 51b, 51c, 51d providing even contact pressure. The relay may be mounted on a panel by means of a spring mounting member (Figs. 7, 8, 9, not shown) with a tongue fitting a recess in the base 22 and over projections of the cover 12.
Patent GB-884873-A (GB)
Title: Improvements in work guiding devices for automatic lathes
IPC: C03B37/06
Filed: 1960-04-12
Abstract: 884,873. Lathe details. USINES TORNOS FABRIQUE DE MACHINES MOUTIER S.A. April 12, 1960 [April 24, 1959], No. 13071/60. Class 83 (3). A centre rest for an automatic lathe comprises a sleeve 8, Fig. 3, adjustably fixed to the tool support 2 and a hollow member 9 slidable in the sleeve, which member is integral at its front end with a collet 9<SP>1</SP> which guides the work with a pre-set clearance and may be opened and re-closed by sliding the member backwards and forwards in the sleeve, this reciprocating movement of the member being effected by a rotatable member 13. Member 13 is actuated by a cam 21, Fig. 1, on a shaft 3 carrying other cams for feeding the tool holders on support 2 and the work. The pre-set axial position of sleeve 8 relatively to support 2 is held by a collet 6 mounted in a bush 4 and tightened by a nut 7. Member 13 is clamped round a part. 11 engaging screw-threads of different pitch on the rear ends of sleeve 8 and member 9. In a modification, member 11 is rotatably secured to the sleeve and engages screw-threads on member 9. In a further modification, a nut 34, Fig. 6, clamps a disc 33 to member 9, and a screw 32 clamps the disc to a nut 31 while allowing the nut to turn relatively to the disc. The nut engages threads on sleeve 8.
Patent GB-1352416-A (GB)
Title: Track communications for continuous rail
IPC: B61L23/16
Filed: 1971-05-04
Abstract: 1352416 Track circuit system GENERAL SIGNAL CORP 4 May 1971 [4 May 1970] 13097/71 Heading B7N In a continuous rail, alternating current, track circuit system in which each occupancy detecting track circuit is terminated by shunts S and includes a centre feed transmitter T1 or T2 co-operating with receivers R1 or R2 at the circuit ends and in which the track circuit frequency alternates in successive circuits, a further set of control track circuits including transmitters TA or TB, operating at frequencies different from each other and transmitters T1 and T2, and receivers RA or RB is provided overlapping the first set of circuits and coupled to the first set to transmit occupancy information to track locations along the line. Assume a train between positions 3 and 4, this is detected by the absence of signal from transmitter T2 to receiver R2 at position 3. This information is passed to transmitter TB and passed via the tracks to receiver RB at location 2 and via transmitter T1 and the track to receiver R1 at position 1. Similarly the train is detected by receiver R2 at position 5 and this information is passed in the direction of locations 6 and 7. Each transmitter signal can be coded, e.g. with its numbered location and with message words indicating track occupancy or the state of an associated visual signal. In addition each location can include a further transmitter which is switched on by train movement and transmits cab signals or speed information to the train from a central office.
Patent GB-413267-A (GB)
Title: Improvements in or relating to radio and other modulated carrier wave transmission systems
IPC: H03C1/52
Filed: 1933-01-10
Abstract: 413,267. Valve modulating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London, and DITCHAM, W. T., Tudor House, Broomfield Road, Chelmsford. Jan. 10, 1933, No. 13137/32. [Class 40 (v).] Two waves of the same frequency but different mean amplitude are applied in phase opposition to an aerial or like transmitter, the two waves being modulated in opposite phase by a single signal source coupled to series modulating-valves, with the result that although each wave may be only slightly modulated the modulation of the combined wave is comparatively deep. As shown, the carrier wave source MO is coupled to the input of independent amplifiers A1 A2, the output sides of which are both coupled at S1, S2 to the outgoing circuit. The outputs are caused to combine differentially either by the direction of winding of the coupling coils S1 S2 or by applying the input to the amplifiers A1 A2 in phase opposition. One wave is made to predominate over the other by using different degrees of coupling, or different degrees of amplification in the valves. The respective waves are modulated by valves M1, M2 connected in series in the plate supply circuit of amplifiers A1 A2, the signal source A F being coupled in push-pull to the grid circuits. The amplifiers M1, M2 may be given different grid bias in order that the mean carrier output from the amplifiers A1 A2 may have different values. The valves A1, A2 are independent of each other, any inter-action due to their being coupled to a common output circuit being neutralized by a coupling DC Bridge circuits may be used for combining the two waves.
Patent GB-132083-A (GB)
IPC: A01G23/14
Abstract: 132,083. Johno, S. Sept. 25, 1918. Latex, collecting.-A latex-collecting spout is made of bamboo, both ends of which are internally bevelled, and the end which is driven into the tree is cut, as shown at 2.