baber/WOPTO huggingface dataset:
Patent GB-1043078-A (GB)
Title: Improvements relating to polymeric composition
IPC: C08L23/02
Filed: 1965-07-07
Abstract: A blend of a polyolefin, e.g. polyethylene, and an ethylene-propylene-non-conjugated diene terpolymer is sulphur-vulcanizable and finds application as shoe soles and as coatings for wires and cables.  The preferred dienes are dicyclopentadiene and 1,4-hexadiene.  Optionally the polyolefin used may be a visbroken material.
Patent GB-1107968-A (GB)
Title: Process for the trimerization of butadiene
IPC: C07C2/46
Filed: 1966-06-28
Abstract: Cyclododecatriene-(1,5,9) is prepared in yields of 85-95% by contacting butadiene with a catalyst formed by reacting (a) an organo-aluminium compound Z25.- 3.5.Al2Cl3.5- 2.5 where Z is C2-C4 alkyl, or phenyl, (b) 0.3-0.9 moles water per mole (a), and (c) a titanium compound T : A4 wherein A is at least one of Cl, Br, I or OR, R being C1-C20, the molar ratio (a) to (c) being from 3:1 to 30:1, and carrying out the trimerization at 20-120 DEG  C.  The catalyst is preferably prepared in situ, and one component may be introduced as a gas with the butadiene feed.  The preferred aluminium sesquichloride is ethylaluminium sesquichloride. Reaction may be effected in an inert solvent such as benzene, cyclohexane, hexane or, particularly, cyclododecatriene product, and the water may be dissolved therein or added as vapour in an inert gas carrier e.g. N2 or in the butadiene feed.  The pressure is not critical and may be 0.5-50 atmos.  It is stated that isoprene may be similarly trimerized.
Patent GB-1480285-A (GB)
Title: Electrodes
IPC: H01H33/66
Filed: 1974-06-28
Abstract: 1480285 Cold cathode tubes; vacuum switches GENERAL ELECTRIC CO 28 June 1974 [29 June 1973] 28905/74 Addition to 1401867 Headings H1D and H1N A vacuum arc device comprises a pair of electrodes surrounded by a shield not arranged in a circle as in the parent Specification, wherein the electrodes are of ferrous material having a tensile strength of at least 100,000 p.s.i. and a ductility of at least 5% elongation of an ASTM standard 2 inch long sample. Ferrous materials include steels with martensitic grain structure and precipitated inclusions which are machined then heat treated to harden. The steels contain 15-30% Ni; Mo, Co and Cr; TRIP steels may be used. A triggerable vacuum gap comprises fixed primary electrodes 17, 18 on Cu supports 21, 23 and surrounded by a shield 32, 33 with an additional member 34 which prevents particles from the arc directly impinging on the envelope. Electrode support 23 contains a trigger electrode assembly 26. In another embodiment without the trigger assembly the lower electrode is movable to contact the upper electrode by means of bellows and carries a Cu-Bi or Cu-Be arcing button to prevent welding of the electrodes 17, 18.
Patent GB-224722-A (GB)
Title: Improvements in reflex cameras
IPC: G03B19/12
Filed: 1923-11-17
Abstract: 224,722. Thornton-Pickard Manufacturing Co., Ltd., Pickard, A. G., and Slinger, F. Nov. 17, 1923. Cameras, reflex.- The focusing-hood is mounted upon a bellows portion adjustable in length, so that the distance of the top of the hood from the focusing- screen may be varied. In the form shown, the hood C is carried by a frame E which is adjustable vertically with respect to the camera body A, for example by rack and pinion gearing H, h, or by lazy-tongs, and is connected to the camera body by a bellows part D. In the closed position, both parts are housed in the frame. E. The lower en of the part D may be attached to the frame of the focusing- screen, or to a detachable frame F held in position by spring catches f.
Patent GB-891644-A (GB)
Title: Heat exchanger
IPC: F28D7/10
Filed: 1960-08-23
Abstract: 891,644. Fluid heaters. BROWN FINTUBE CO. Aug. 23, 1960 [Sept. 11, 1959], No. 29090/60. Class 64(1) Air or other gas or a liquid is heated in flowing through an annular space between an outer tube 10 and an inner tube 20, the latter having longitudinal external fins 21 extending into the annular space, and longitudinal internal fins 40 provided only in a zone adjacent the heating fluid outlet end thereby increasing the rate of heat transfer in this zone between the heated fluid flowing in the annular space and the heating flowing through the inner tube from a heat source such as a fluid fuel burner 30. In the form shown, a cylindrical baffle 41 is provided within the internally finned portion of the inner tube 20 to direct the heating gases between the fins 40, and is centrally positioned by rings 45 which also act as baffles. Lateral ducts 11, 12 are provided to conduct the heated fluid into and Out of the annular space. The heat exchanging fluids may flow in co-current or, as shown, in countercurrent. Studs 33 are welded to the exterior of the inner tube adjacent the burner 30 to increase the rate of heat transfer whilst permitting circumferential flow of the heated fluid at this zone. Either or both of the inner and outer tubes may be of oval, square, rectangular or other non-circular cross-section.
Patent GB-1357222-A (GB)
Title: Purification of aromatic diamines
Filed: 1971-06-22
Abstract: 1357222 Purification of aromatic diamines IMPERIAL CHEMICAL INDUSTRIES Ltd 2 June 1972 [22 June 1971] 29178/71 Heading C2C Ortho-diamines are removed from mixtures of isomeric aromatic diamines by reacting the ortho-isomers in the mixtures with methylene bridged polyaryl polyisocyanates or a mixture of such polyisocyanates and recovering unreacted diamines from the reaction mixture. The methylene bridged polyaryl polyisocyanate is preferably prepared by phosgenation of a condensate of aniline and formaldehyde and is preferably used in the form of a liquid mixture of methylene bridged polyphenyl polyisocyanates optionally in conjunction with another isocyanate.
Patent GB-903762-A (GB)
Title: Improvements in or relating to torque-measuring apparatus
Inventor: OSWALD KARL
IPC: G01L3/10
Filed: 1958-09-11
Abstract: 903,762. Measuring electrically. MESSENJASCHIN, G.A. Sept. 11, 1958, No. 29180/58. Class 40 (1). Torque-measuring apparatus comprises a pair of supports extending around a torsion shaft and each carrying a ring of teeth which co-operates with a stator for generating electrical signals, the stator being supported by bearings on one or both supports. The stator is thus able to move radially in the event of eccentricity. Figs. 1, 2 show a sleeve 4 having a square-toothed rim 2 secured to a rotatable shaft 1 the torsion of which is to be determined. A cylinder 9 having a similar toothed rim 3 is secured to the other end of the test section of shaft 1. The left-hand end of sleeve 9 is supported by a series of ball races 15 mounted in the flanged sleeve 4. A stator disc 18 is supported by axial ball races 16 and is located in the axial direction by ball races 24. All ball races have adjustable eccentric mountings. The stator 18 carries two sets of coils such as A, wound on magnetized polepieces 26, 28 respectively adjacent, the toothed rims 2, 3. The coils are disposed at equal intervals around an adjustable ring mounted on the stator 18. As the toothed rims 2, 3 rotate relative to the polepieces 26, 28 alternating voltages are generated in the coils, the phase difference between the voltages in the two sets of coils being indicative of the angular displacement of the toothed rims 2. 3 and hence of the torsion of shaft 1. Additional coils are provided for zero setting and calibration. Zero adjustments may be made whilst the shaft 1 is stationary by rotating the stator at the normal speed so that the required EMF is generated. In Fig. 5 (not shown), this is achieved by an electric motor temporarily clamped to the shaft 1 and coupled to the stator via a friction drive. Modifications.-The toothed rings may alternatively provide cyclic capacitive or inductive variation. Rotors containing blind holes may replace the toothed rings. Specification 903,763 is referred to.
Patent GB-1276016-A (GB)
Title: Synthetic silicate compositions
Inventor: NEUMANN BARBARA SUSAN
IPC: C01B39/06
Filed: 1969-06-10
Abstract: 1276016 Synthetic silicate composition LAPORTE INDUSTRIES Ltd 29 May 1970 [10 June 1969] 29216/69 Addition to 1213122 Heading C1A A synthetic silicate composition, which may be in the form of a sol or gel, comprises (1), a synthetic silicate having a structure similar to that of clay minerals of the smectite type and having the general structural formula where M is a sodiu m or lithium cation and the  value of a, b and c is such that either a<6; b>0; c>0; and b+c<2; Œ(a+b+c-6)<2; or a<6; b=0Œc<2 and Œ(a+c-6)<2, and a cation exchange capacity of 50 to 120 milliequivalents per 100 g. and a Bingham Yield Value of from 40-250 dynes/cm.<SP>2</SP> as a 2% dispersion in tap water and (2) 3 to 25% by weight of solids, of one or more peptizers and (3) from 0À02 to 0À8 milliequivalents per gram of a silicate of one or more cations for which the ratio Z/r<SP>2</SP> is greater than 2À0 x 10<SP>16</SP> charge/cm.<SP>2</SP> where Z is the valency of the cation and r is the radius of the cation. Specified cations are H<SP>+</SP>, Li<SP>+</SP>, Ca<SP>2+</SP>, Cu<SP>2+</SP>, Mg<SP>2+</SP>, Zn<SP>2+</SP> and Al<SP>3+</SP> and specified peptizers are sodium tripolyphosphate, sodium hexametaphosphate and tetrasodium pyrophosphate. The composition may contain or be free of water. Stabilized aqueous sols may be obtained by mixing the clay with water containing the peptizer and cation; by diluting a paste or gel already containing the clay, peptizer and cation; by mixing the clay and peptizer and adding to water containing the cation; or the silicate, peptizer, cation and water may be mixed in a single operation. In comparative examples, the cations NH 4 <SP>+</SP>, Na<SP>+</SP>, K<SP>+</SP>, Co<SP>+</SP>, Sr<SP>2+</SP> and Ba<SP>2+</SP>, are disclosed.
Patent GB-466209-A (GB)
Title: Improvements in or relating to typewriter platens or cylinders
IPC: B41J11/053
Filed: 1935-10-23
Abstract: 466,209. Rollers. TAYLOR, W. E., and DONAGHY, J. Oct. 23, 1935, No. 29225. [Class 42 (ii)] [Also in Group XVI] A noise-reducing platen for typewriters consists of a core 2, a cover 4, and an intermediate cushioning-body 1 which, in order to break the longitudinal continuity of the platen, is formed from a series of separate annular sections. To prevent compression by means of the reads 3, the sections may be so arranged that they do not project beyond the core. The sections may be separated by small air-spaces, or by large air-spaces which may contain cellular or other sound-deadening material, or by thin discs of asbestos or the like. For long platens, the sections may have interengaging bosses and recesses, and longitudinal stay-rods may be provided. The sections may, as described in Specification 432,611, consist of wound sheet-rubber.
Patent GB-628181-A (GB)
Title: Improvements in drawing appliances
IPC: B43L13/04
Filed: 1946-10-01
Abstract: 628,181. Drawing instruments. EVANS, W. J. Oct. 1, 1946, No. 29234. Addition to 597,020. [Class 97 (iii)] A T-square according to the parent Specification is provided with a member 6, Fig. 1, slidable in a slideway 7, Fig. 3, formed in the head 4 of the square and having an abutment 9 which may be rigidly secured to the member 6 or may be mounted therein in a bored boss 11 and spring-urged upwardly by a spring 12, the abutment 9 having a tapered projection 10 which releasably engages the groove 1a of the drawing board. Adjustment means such as the screwed stop 14 are provided on the end of the member 6 remote from the abutment 9 and the member 6 may be spring urged by a spring 16 to bring the stop 14 into engagement with the end 4a of the head 4. Movement in the other direction is limited by engagement of the abutment 9 with the end 4b of the member 6 or preferably this second stop is formed as a coloured indicator 20 registering with a scale 21 on the head 4 and arranged to abut against the end 22 of a slot 23 in the cover-plate 24. In use the stop 14 is adjusted so that indicator 20 registers with the required separation on the scale 21 and a line is drawn as in Fig. 1. The abutment 9 is then depressed to engage the groove and the ruler 2 moved against the spring until stop 14 abuts against the end 4a of the head 4, when a second line may be drawn. Head 4 is then depressed into the groove so that on releasing member 9 the member 6 is reset by the spring in its original position. In a modification the member 6 is formed as a rod carried by a bracket on the member 4 and in a further modification the slidable member 6 is constituted by two blocks or plates adjustably connected by a screwed rod.
Patent GB-1261649-A (GB)
Title: Control means for electrical storage heaters
Inventor: BAYES JOHN RICHARD
IPC: F24H9/20
Filed: 1969-06-10
Abstract: 1,261,649. Heat storage air-heating apparatus. POTTERTON INTERNATIONAL Ltd. 1 June, 1970 [10 June, 1969], No. 29372/69. Heading F4U. A storage heater comprises a heat storage mass 2 heated by resistance heating elements H1, H2 and H3 with "off-peak" electricity and an "on-peak" heating circuit supplying either a single element H3 or a resistance element in an air stream induced by a fan 4 over the heat storage mass, the "off-peak" electrical supply to the mass elements H1, H2, H3 is terminated when the mass achieves a predetermined temperature by manually adjusted thermostatically controlled contacts 18, and a switching means for the "on-peak" heating circuit is rendered inoperative when the temperature setting of the contacts is not positioned at or substantially at a maximum, by a cam 20 connected to the control knob 19 of the contacts 18 to close contacts 21 in the circuit when at the maximum setting. The fan motor speed is controlled by a threeposition switch 22 manually actuated by a knob 23. A thermally-sensitive switch 13 in the air stream from the fan is operative below a predetermined temperature to complete a series circuit to a coil 17 of a change-over relay to connect the electricity supply whether "on" or "off" peak to the heating element H3 The storage heater may be used with a small bore hot water circuit comprising an accelerator pump and a number of radiators, the circuit being adopted to extract heat from the electrically heated storage mass through the intermediary of a closed circuit gaseous medium and an associated heat exchanger.
Patent GB-617469-A (GB)
Title: Improvements in or relating to steam raisers
IPC: F22B1/28
Filed: 1946-10-02
Abstract: 617,469. Steam generators. DRURY, W. F. Oct. 2, 1946, No. 29388. [Class 123(ii)] In a low-pressure steam generator 1 adapted to be heated by, e.g. an electric immersion heater 2 and to be supplied with water from a closed feed water tank 3 through a pipe 8, the level of water in the generator 1 and tank 3 is controlled by a float valve 4 and the pressures therein are equalised by a pipe 10 of appreciable volume. The latter extends from the steam space of the generator to below the normal water level 6 in the feedwater tank and is provided with a relatively small wall aperture 12 above the said water level. The pipe 8 is fitted with a stand pipe 9 for limiting the pressure within the generator.
Patent GB-906345-A (GB)
Title: Improvements in or relating to distemper, paint, and like compositions
IPC: C09D7/80
Filed: 1958-09-15
Abstract: A dry powder composition suitable for mixing with water to form a paint or distemper comprises a mixture of pigment particles and water-soluble binder particles, both types of particles being coated with a water-repellent oil.  The oil may be kerosene, heavy naphtha, white spirit, thin spindle oil or a thin drying oil. Suitable binders are water-soluble cellulose derivatives, starches, dextrins, casein or alginates.  Specified pigments are titanium dioxide, chalk, barium sulphate, zinc oxide, and lithopone; coloured pigments may be used in addition.  Fillers such as wood flour and asbestos floats may be added.  The compositions may also contain an emulsifying agent for the oil. The oil may contain waxes or natural or synthetic resins in solution, and dryers, e.g. metallic naphthenates.
Patent GB-670826-A (GB)
Title: Method of and means for the construction of a support for mine galleries and the like
IPC: E21D17/086
Filed: 1949-11-18
Abstract: 670,826. Supports for mine roofs. DIRECTIE VAN DE STAATSMIJNEN IN LIMBURG. Nov. 18, 1949 [Nov. 19, 1948], No. 29585/49. Class 20(ii) Relates to mine gallery roofs supported by caps connected end to end. and supported by props. The caps are connected by inserting a tongue 11, Fig. 3, on the end of one cap into a fork 15 on the end of the adjacent cap. The fork 15 has a rounded socket 17 to receive a rounded nose 12 on the tongue 11. A rectangular hole 14 on one cap registers with a cruciform hole 18 in the other and a wedge 10, Fig. 4, is driven through these holes. To avoid loss of cap pieces when removing. props and caps the caps remain connected by means of a pin 13 provided in the nose 12 which engages in the hole 18. In modifications the cruciform hole is replaced by an H-shaped hole and the wedge is of U- section or a T-shaped hole and the wedge is of L-section. The holes are arranged symmetrically in the prop so as to allow the caps to be inverted when bent so that they are bent straight again.
Patent GB-792453-A (GB)
Title: Electric cooking utensil
IPC: A47J27/00
Filed: 1955-10-17
Abstract: 792,453. Electric cooking utensils. FARBER Inc., S. W. Oct. 17, 1955 [Nov. 30, 1954] No. 29604/55. Class 39(3) [Also in Group XXXVI] An electric cooking utensil e.g. a frying pan, a saucepan, a deep fat frier or griddle comprises a container 10 with a sheathed wire heating resistance 18 welded or brazed to its base and controlled by an adjustable thermostat removably connected with the heating element, the tube 40 containing the temperature sensitive member being disposed slidably within a housing 42 secured to the heating element 18 but spaced from the container 10. The thermostat 40 is a bimetal or capsule with an expansible fluid and bellows and is adjusted by a rotatable knob 34 on the casing 32 carrying the thermostat. The casing 32 carries a supply cable 33 and has sockets 36 fractionally engaging terminal pins 26 held by nuts 30 sealing the ends. of the metal sheath 18 of the heater containing a resistance wire embedded in a magnesia cement. The container 10 may be of stainless steel with a thick aluminium base 16 for even heat conduction from the circular heater, and may be completely immersed in water during washing. The container has a short handle 12, feet 14 of heat-resis. tant plastic and a cover.
Patent GB-832913-A (GB)
Title: Improvements in or relating to walking-aid apparatus
IPC: A61H3/00
Filed: 1955-10-18
Abstract: 832,913. Appliances for teaching invalids to walk. KIRKPATRICK, V. E. Oct. 17. 1956 [Oct. 18, 1955], No. 29654/55. Class 132(1) A walking aid comprises spaced handles mounted on a wheeled base open at the end below the handles, the apparatus being collapsible into a substantially flat position when not required. The apparatus comprises two base members 1 mounted on two small pivoted front wheels 2 and two large rear wheels 3. A U-shaped frame 4 is pivoted to the front ends of members 1 and comprises side members 5 connected at their lower ends by cross-members 7 and having at their upper ends handles 6. A third U-shaped frame 10 has each free end pivotally connected to the rear end of one of the members 1. Frames 4 and 10 are releasably connected together by bolts 11 and wing nuts 12 on frame 10 fitting into slots 13 on frame 4. A strap 15 with eyelets 15A is slung between hooks 5A on the handles. A brake 16 is provided for each rear wheel operated from a lever 17 on the corresponding handle. A strap 18 may be provided having eyelets at each end which engage over studs 20 on members 1.
Patent GB-340333-A (GB)
Title: Improvements in or relating to expanded sheet metal and in the manufacture of same
IPC: B21D31/04
Filed: 1929-10-01
Abstract: 340,333. Expanded metal. TIRIFAHY, L., 30, Rue du Parc, Charleroi, Belgium. Oct. 1, 1929, No. 29694. [Class 45.] Expanded metal comprises c o n - tinuous straight bands g lying flat in the plane of the sheet, alternating with h continuous sinuous bands stamped at their meeting joints to form arches c projecting from said plane, a longitudinal crease d being formed on the arches. Ribs f may also be formed between expanded portions of the sheet.
Patent GB-748404-A (GB)
Title: Improvements in lubricants
Filed: 1952-11-25
Abstract: An extreme pressure lubricant comprises a natural or synthetic hydrocarbon oil, 0.1-0.25 per cent by weight (based on the oil) of an acyclic or carbocyclic sulphurfree organic nitro compound and 1-10 per cent of an organic sulphur compound of the general formula R-Sn-R1 wherein R is hydrogen or a substituted or unsubstituted alkyl, cycloalkyl, aryl, aralkyl or heterocyclic organic radicle, R1 is a substituted or unsubstituted alkyl, cycloalkyl, aryl, aralkyl or heterocyclic organic radicle and n is an integer, this sulphur compound being soluble in the oil or capable of being rendered soluble therein with the aid of a solvent.  Suitable hydrocarbon oils are petroleum oils, polymerized olefins and alkyl-substituted aromatics.  Nitro compounds specified are 1.3-dinitrobenzene, 2-bromo-1.3-dinitrobenzene, 2-chloro-4-nitrobenzene, 2, 4-dinitrophenol, their Calkyl derivatives or mixtures of the same, nitroparaffins, nitronaphthalenes and nitronaphthols. Sulphur compounds specified are thiodiglycols, thioglycollic acid esters, thiopropiomic acid butyl esters (HS-C2H4COOC4H9) diodecyl disulphide, diamyl trisulphide, di-hydroxyethyl disulphide (HO-C2H4-S-S-C2H4-OH), diethyl hydroxyethyl disulphide (C2H5-O-C2H4-S-S-C2H4-O C2H5), di-(thiopropionic acid butyl ester) (C4H9-O-CO-C2H4-S-S-C2H4 - CO - O - C4H9), dibenzyl disulphide, dihexylphenol disulphide, 2, 6-di-tert.-butyl-o-cresol disulphide (obtainable by alkylating o-cresol with isobutylene and treating the product with sulphur monochloride) and dibenzothiazole disulphide. Suitable solvents are 2-ethyln-hexanol, 2-ethylhexane-diol-1.3, 2-methylpentane-diol-1.4, diethylene glycol monoethylether and diethylene glycol monobutyl ether.  The lubricant may also comprise thickeners such as soaps, extreme pressure agents, viscosity improvers, setting point depressants, froth inhibitors and antioxidants.  In the examples, mineral oil compositions are described which contain (a) 2.4-dinitrophenol and 2.6-di-tert.butyl-o-cresol disulphide or (b) 2, 6-dinitrophenol and cyclohexanone disulphide (obtainable by reacting cyclohexanone with sulphur monochloride).  For comparison purposes, similar compositions are described from which either the nitro compound of the sulphide is omitted.  According to the Provisional Specification, the organic sulphur compound may contain metals such as tin or zinc and the proportions of nitro compound and sulphur compound are unrestricted.