baber/WOPTO huggingface dataset:
Patent GB-1010050-A (GB)
Title: Improvements in or relating to varnishes
IPC: H01B3/42
Filed: 1964-06-15
Abstract: An insulation varnish comprises a benzene hydrocarbon solution of a terephthalic or isophthalic polyester and a triazine-formaldehyde condensate as a cross-linking agent, wherein the polyester contains free hydroxy groups and saturated or unsaturated aliphatic radicals and is prepared by condensing terephthalic or isophthalic acid or lower alkyl diester thereof with 0.16 to 0.30 mols. per mol of one or more saturated or unsaturated aliphatic monocarboxylic acid of 15-25 C atoms and 0.6 to 1.0 mols. per mol. of one or more diprimary glycol in which the OH groups are separated by 3.1 to 6.0 C atoms, on average, and 0.3 to 0.6 mols. per mol. of one or more tri- or tetrahydric alcohol.  The monocarboxylic acid may be, e.g. stearic acid or a fatty acid from olive oil, soybean oil, linseed oil, or tallow, and preferably contains a small quantity of a fatty imidocarboxylic acid, e.g. one derived from trimellitic anhydride and a fatty amine.  The diprimary glycol preferably contains at least 30 mol. per cent of a 3, 4, or 5-carbon polymethylene glycol, and up to 50 mol. per cent each, but not more than 70 mol. per cent together, of branched chain glycols, e.g. neopentyl glycol, and ether glycols, e.g. di- or triethylene glycols, or ethylene or trimethylene glycol may be present.  The aminoplast preferably amounts to 7-25% by weight of the polyester, and may be melamine- or benzoquanamine-formaldehyde, etherified with a higher alcohol.  The varnish preferably also comprises a blocked polyisocyanate, preferably obtained by polymerizing a partially blocked diisocyanate, and amounting preferably to 2-20% by weight of the mixture.  The resins are best dissolved before mixing, the polyisocyanates requiring esters of glycol-ether-esters as solvent.  Suitable benzene hydrocarbons are toluene, xylene and solvent naphtha. Petroleum hydrocarbons and alcohols may be used as extenders.  In examples, a phenol-blocked polymerized toluylene diisocyanate in ethoxy- or methoxy-ethyl acetate and a butylated melamine-formaldehyde resin in butanol are added to xylene solutions of (1) a dimethyl terephthalate / glycerol / butanediol - 1,4 / stearic acid condensate; (2) a condensate of isophthalic acid and butanediol-1,4 with a product from trimethylol propane, glycerol, a fatty amine, trimellitic anhydride and a tall-oil fatty acid; (3) a condensate similar to (2) in which soybean oil fatty acid is used instead of the tallow acid, and neopentyl glycol is used in addition to the butanediol and solvent naphtha and white spirit are added; and (4) a condensate from glycerol, trimethylopropane, soybean fatty acid, isophthalic acid, neopentyl glycol, diethylene glycol, and butanediol-1,4. Specification 988,828 is referred to.
Patent GB-1163793-A (GB)
Title: Braking of Electric Motors
Inventor: HARBOTT NORMAN RICHARD
IPC: H02K17/30
Filed: 1967-05-26
Abstract: 1,163,793. Control of motors. M.S.E. HOLDINGS Ltd. 1 May, 1968 [26 May, 1967], No. 24724/67. Heading H2J. [Also in Division H1] An induction motor 2 driving a centrifuge has a braking unit 6 for reversing two of the supply phases, a reed switch 7 being connected to a relay 8 for de-energizing the motor when it has been brought to a standstill and commences a reverse rotation. The reed switch is adapted to be operated by a magnet 9 carried on a member 10 mounted by a ball bearing 11 on the motor shaft to rotate therewith unless restrained. When the motor starts to rotate in a forward direction, a stud 12 abuts one of two stops 13, the magnet being spaced angularly from the reed switch. When the motor tends to reverse, the member 10 is carried with the shaft until the stud 12 engages the other stop, the magnet being placed directly underneath the reed switch with its field aligned with the reeds of the switch. A washer 15 may provide additional friction between the motor shaft and member 10. Resistance may be connected in the motor circuit to increase the braking effect. The switch 7 may have a biasing magnet 14. In a modification, the axis of the magnet 9 is parallel with the motor shaft, and the reeds of the switch are parallel to the magnet, Fig. 4 (not shown).
Patent GB-661354-A (GB)
Title: Improvements relating to number plates, signs and the like
IPC: G09F7/16
Filed: 1948-03-22
Abstract: 661,354. Number plates. GARLE, K. J. March 21, 1949 [March 22, 1948; May 13, 1948], Nos. 24774/50 (divided out of 8466/48 and 24775/50 (divided out of 661,276). Class 3(ii) [Also in Group XXV] A moulded digit 12 having one or more rearwardly projecting studs 13 which pass through holes in a backing plate 11 and by which it is attached, is recessed at the back so that the thickness of the material forming the sections of the digit is less than the overall thickness of the digit, the sections of the digit being of greater overall thickness near their central line than near their edges. The digits may be of inverted V- shape in cross-section as shown. The studs may be hollow or solid and the digits may be made of metal or plastic material. The studs may be riveted over to hold the digit in place or an insert of ball or other shape may be used to expand the stud behind the backing plate. A locking washer forced over the stud may be used as an alternative. The digits may be translucent or transparent and fitted over a similarly shaped transparent part of the background so that they may be rear illuminated; if inserts are used to expand the stud in such a case they are made of similar transparent or translucent material.
Patent GB-718340-A (GB)
Title: Improvements in or relating to the stabilisation of synthetic resins
IPC: C08G79/00
Filed: 1952-10-06
Abstract: Synthetic resins formed by the process of the parent Specification are stabilized by the addition of 3-12 per cent. (based on the resin) of a drying or semi-drying oil.  Suitable oils are linseed, soya-bean or castor.  Preferably those resins are employed in which the ratio of metal to keto-enol tautomer is greater than 1 : 1.5.  The mixture is preferably prepared at raised temperature.  In examples (1) and (3) a resin prepared from aluminium butylate and acetoacetic ester is stabilized by addition of crude linseed oil or of soya bean oil.  (2) Castor oil is added to a hot resin prepared from aluminium butylate and diethyl malonate.  (4) Crude linseed oil is added to a hot resin prepared from aluminium butylate and formylacetophenone.
Patent GB-1222843-A (GB)
Title: A method of maintaining electric apparatus at low temperature
IPC: H02K9/20
Filed: 1968-05-24
Abstract: 1,222,843. Refrigerating. L'AIR LIQUIDE SOC. ANON. POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE. 24 May, 1968 [24 May, 1967], No. 25059/68. Heading F4H. In a refrigeration system for cooling electrical apparatus the refrigerant is a mixture of hydrogen and helium and is liquefied by expansion to substantially atmospheric pressure, the liquid produced comprising hydrogen and helium in such proportions that the boiling point of the liquid is from 15 to 17 K. As shown, a system using a mixture of 60% by volume of helium and 40% by volume of hydrogen, comprises a compressor 5 which discharges via heat exchangers 1, 2, 3 to an expansion valve 15, part of the gas leaving exchanger 1 being expanded in turbine 10 and used to cool exchanger 2 before being added to the return gas line 13. The liquid fraction, containing substantially more hydrogen than the expanded gaseous mixture, is collected in separator 4 and part is added through line 25 to the return gas line 26 to restore the original hydrogen content of the gas to be compressed. The remaining liquid is circulated by pumps 17, 18 in parallel to cool the electrical conductors 19, 20 of a voltage transformer and a turbo-alternator respectively. Pump 17 pressurizes the liquid sufficiently to prevent boiling thereof and the liquid leaving conductors 19 is expanded to its initial pressure in valve 21 before being combined with the vapour produced by heat exchange with conductors 20. The combined stream is reliquefied in heat exchanger 3 and returned to separator 4. Operating temperatures and pressures are specified. In a further embodiment (Fig. 2, not shown) the system employs a mixture of 50% hydrogen and 50% helium by volume and includes two further counterflow heat exchangers. Part of the gas from the downstream side of the highest temperature exchanger is expanded in a turbine, used to cool the third heat exchanger, then expanded in a further turbine and used to cool the fourth exchanger before joining the return gas stream. Operating pressures and temperatures are again specified.
Patent GB-798805-A (GB)
Title: Improvements in and relating to stiffening collars or other articles of wearing apparel
Inventor: KORNREICH ERNST
IPC: A41B3/10
Filed: 1953-09-10
Abstract: 798,805. Polythene coated fabrics; laminates- TRUBENISED (GREAT BRITAIN), Ltd- Sept. 10, 1954 [Sept. 10, 1953; June 22, 1954], Nos. 25069/53 and 1958/54. Class 140. [Also in Group VII] Stiffening material comprises single- or multiply textile fabric wherein at least one ply contains strands of cellulose acetate and at least one ply is coated or impregnated with polythene. One form of stiffening material comprises a mixed woven fabric of cotton and cellulose acetate, provided on one face with a coating of polythene applied either in molten form or as a preformed sheet. In a three-ply material a layer coated or impregnated with polythene is disposed between two layers containing cellulose acetate strands, the layers being secured together by fusion of the polythene. An alternative three-ply material consists of two normal fabric layers on opposite sides of a layer containing cellulose acetate, the assembly being coated or impregnated with polythene before or after fusion of the cellulose acetate.
Patent GB-806851-A (GB)
Title: An improved adjustable support for a drawing board
IPC: A47B27/16
Filed: 1955-09-01
Abstract: 806,851. Tables. DARGUE, E. L Sept. 3, 1956 [Sept. 1, 1955; May 4, 1956], Nos. 25093/55 and 13822/56 Class 52(3) A drawing board 44 is angularly adjustable on a member 26 rotatably supported on the ram of a hydraulic lift pump and is clamped about a vertical axis by member 38 and about a horizontal axis by member 50 The ram is enclosed in a cylinder which is surrounded by a hydraulic fluid reservoir. A piston 54 reciprocated by a bell-crank foot pedal 68 is located in a chamber 56, in the pump housing 52, communicating by passages 96, 98 with the fluid reservoir by passage 100 containing a non- return valve 104 allowing fluid to flow only from the container to chamber 56, and the ram cylinder by passage 102. The pressure release mechanism, lowering the table, consists in two chambers 82, 84 communicating with the ram cylinder and the fluid reservoir respectively, and connected by a chamber containing a ball valve opened by a pedal operated piston 80. The chamber 82 is also in communication with passage '98 through passage 108 containing a non- return valve opened when a predetermined pressure is set up in the ram cylinder. The board may be located in any rotated position by a spring and ball device engaging channels in the rotatable member carried by the ram, and may also be adapted to be carried, together with the hydraulic pump, from a bracket extending from a cabinet.
Patent GB-355942-A (GB)
Title: Improvements in or relating to loose leaf binders, files and the like
IPC: B42F13/12
Filed: 1930-08-22
Abstract: 355,942. Loose-leaf binders. MOORE'S MODERN METHODS, Ltd. and PARLABEAN, D. P., 12, St. Bride Street, London. Aug. 22, 1930, No. 25102. [Class 146 (i).] Covers.-In loose-leaf binders of the kind in which hinged strips usually carrying the filing posts are hinged to the back or cover A of the binder, each strip B is formed of cloth having each surface covered by metal strips. The cloth binding A<2> for the cover is folded to form the strip B and a folded strip of metal B<2> is placed over the strip B and secured thereto by rivets or eyelets B3. Where posts are employed, locking means as described in Specification 347,857 may be provided.-
Patent GB-756517-A (GB)
Title: Vacuum container incorporating a hand operated vacuum pump
IPC: B65B31/00
Filed: 1954-08-30
Abstract: A vacuum container for preserving foods such as bakery products, fruits and vegetables, pickles, and coffee, tea and tobacco has a lid incorporating a hand operated vacuum pump (see Group XXVIII).  Loss of vacuum is indicated by rise of the pump plunger.
Patent GB-1140298-A (GB)
Title: Preparation of quinoxaline and 1,2,3,4-tetrahydrophenazine-n,n'-dioxides
IPC: C07D241/52
Filed: 1967-05-31
Abstract: 1,140,298. Quinoxaline- and fused quinoxaline dioxides. CHAS. PFIZER & CO. Inc. 31 May, 1967 [3 April, 1967], No. 25211/67. Heading C2C. Quinoxaline- and fused quinoxaline-N.N<SP>1</SP>- dioxides are prepared by a cumulative, continuous flow procedure comprising (1) reacting under monohalogenation conditions a ketone of the formula wherein R 1  is H or C 1 -C 5  alkyl, R 2  is C 1 -C 6  alkyl, phenyl, benzyl or beta-phenethyl or R 1  and R 2  taken together are C 3 -C 6  polymethylene, with substantially a molar equivalent of chlorine or bromine in an inert organic solvent; (2) reducing the hydrogen halide content of the reaction mixture to an amount such that a molar equivalent of o-phenylene diamine is soluble therein; (3) introducing the o-phenylene-diamine under an inert atmosphere under condensing conditions, and (4) adding a peroxycarboxylic acid or aqueous hydrogen peroxide, the temperature of the reaction mixture being maintained throughout below 50 C., until formation of the quinoxaline- N,N<SP>1</SP>-dioxide is substantially complete. In one of the examples, the formation of 1,2,3,4- tetrahydro - phenazine - N,N<SP>1</SP> - dioxide is described. In order to reduce the amount of oxidizing agent used, oxygen may, in some circumstances, be passed through the mixture after condensation is complete.
Patent GB-391153-A (GB)
Title: Process for the production of moisture-resistant cellulose products
IPC: D21H21/16
Filed: 1931-09-08
Abstract: Moisture - resistant non-fibrous sheet or filiamentary material comprises a mixture of crude cellulose which has been parchmentized using sulphuric acid, zinc chloride &c. or formaldehyde and a little acid or a salt, together with non- or slightly moisture-resistant cellulose; such a material is absorbent and does not disintegrate or fray when wetted.  With the formaldehyde process may be used nitric, sulphuric or oxalic acid, bisulphates, aluminium sulphate, calcium chloride, magnesium chloride, &c., the material being subsequently exposed to an elevated temperature.
Patent GB-874334-A (GB)
Title: Improvements in or relating to devices comprising a transistor amplifier and a pass filter
IPC: H04B3/42
Filed: 1959-07-23
Abstract: 874,334. Two-way transmission. PHILIPS ELECTRICAL INDUSTRIES Ltd. July 23, 1959 [July 26, 1958], No. 25319/59. Class 40 (4). [Also in Group XL (c)] The transistor amplifier and filter network more particularly for a two-way carrier current communication system comprises a common emitter stage feeding an output stage, an impedance being provided in the emitter circuit of the input stage to provide negative feed-back and a frequency dependent circuit coupled between the output and input of the input stage to provide positive feed-back to flatten the frequency response characteristic of the filter. The Figure shows a two-band carrier frequency amplifier in which signals in the range 6 to 54 kc/s applied at terminals 1 pass through a filter 3 and to the amplifier and from there through filter 7 to the output terminals 9, while input signals at terminals 9 in the range 60 to 180 kc/s pass through filter 10 and the amplifier to filter 11 and terminals 1. The amplifier comprises a push-pull class A or class B input stage 12, 13 feeding through transformers 14, 15 the push-pull common base output stage 19, 20. Negative feed-back to linearize the amplifier is provided by an impedance network 27 in the emitter circuits of stages 12 and 13 while positive feed-back is provided from a tuned circuit 28 to the emitters to flatten the characteristic of the filters near the cut-off frequencies of 54 and 60 kc/s. The network 27 is, in addition, made frequency dependent so as to equalize the response of the cables. Resistors 30 and 31 de-couple the positive and negative feed-back circuits so that independent adjustment may be made of each and resistors 32 and 33 provide negative feedback through blocking capacitors 34 and 35 to match the output impedance of the amplifier to the lines.
Patent GB-1019397-A (GB)
Title: Bowling alley apparatus
IPC: A63D5/08
Filed: 1963-06-26
Abstract: 1,019,397. Bowling alleys. T. ATKINSON and B. M. ATKINSON. June 23,1964 [June 26, 1963], No. 25329/63. Heading A6D. In a bowling alley, each pin 20 is suspended by a chain 30 and is urged towards an upper, inoperative position by means of a counterweight 39 connected to the chain, a fixed apertured board 22 serving to locate the pins in their operative positions by virtue of the fact that latches 31, provided one above each pin, each engage under the edge of a respective aperture in the board. Each pin 20 and its associated counterweight are connected to one of a series of discs 27 rotatably mounted above the board 22, whereby when the pin is displaced from its standing position on the deck, its latch 31 is released, and the pin is automatically raised to its inoperative position. The discs 27 are each provided with a rod 41 slidable in an eye 40 rotatably mounted on the disc. All of the rods 41 are pivotally connected at one end to a rod 42. The eyes 40 are so positioned on the discs that when the pins are in their inoperative positions, the eyes are displaced from the positions illustrated in Fig. 3 to abut against springs 45 provided at the free end of each rod. Thus in order to respot the pins on the deck of the alley at the end of each frame, the rod 42 is displaced by means of a linkage system which terminates in an operating handle 51 at the approach end of the alley, thereby causing displacement of the rods 41, rotation of the discs 27, and lowering of the pins 20 until the latches 31 re-engage under the board 22. The handle 51 is then operated in the reverse direction to return the rods 41 to the position illustrated in Fig. 3. Dead balls 13 pass under hinged and inclined flaps 12 and are directed by the reverse sides of the flaps (the alley slopes downwardly towards its approach end) to enter channels 15. Coin feed detents 16 control the feeding of balls to the player, and may be time-controlled. Since counterweights 31 are lowered into the player's view when the relevant pins are raised, they may be marked to serve for indicating or scoring purposes. Alternatively, the pins may be arranged to operate electrical or magnetic scoring and/or indicating systems as they are raised to their inoperative positions.
Patent GB-1078353-A (GB)
Title: Improvements in or relating to flexible vane pumps
Inventor: WALLIS GEORGE LESLIE
IPC: A47L7/04
Filed: 1964-06-19
Abstract: 1,078,353. Rotary flexible-vane pumps. QUILLOT Ltd. May 20, 1965 [June 19, 1964], No.25360/64. Heading F1F. A rotary flexible-vane pump in, e. g., a handwheeled liquid fertilizer distributer, includes a pressure-applying blade 16, Fig. 1, hingedly attached to the pump casing 6 and extending longitudinally of the rotor 5 to isolate an inlet 11 from an outlet 13 and deform vanes 9 provided on a natural or synthetic rubber covering 8 enclosing the rotor. The blade 16 is adjustable from outside the casing to vary the amount of deformation of the vanes and hence the amount of liquid discharged at every revolution of the rotor from a maximum to zero. In starting the pump the blade 16 is adjusted to its "no pumping" position. An easily removable cover permits of easy removal of the pump parts for cleaning and replacement. The pump which is driven through bevel gearing from the wheels (2), Fig.3 3 (not shown) of the distributer has its inlet (11) connected to a bulk reservoir (1) mounted on the distributer and its outlet to a spray-bar or bars (15) through a filter (14).
Patent GB-1437379-A (GB)
Title: Twon-barrel gun
IPC: F41A19/21
Filed: 1973-05-29
Abstract: 1437379 Double-barrel gun J CIZERON 29 May 1973 [31 May 1972] 25381/73 Heading F3C A twin-barrel gun has a single movable trigger for firing both barrels, said trigger being movable in first and second directions to fire the first and second barrels respectively. In one embodiment a trigger 20, Fig. 1, is pivotably mounted on a pin 19, is provided with a pressure surface 21 and is engaged by members 22, 23 which are slidably mounted in bores 16, 17 respectively of a block 11. The members 22, 23 extend into a transverse bore 13 of the block 11 and engage drive-transfer members 26, 27 which co-operate with members 24, 25 that are slidably mounted in holes 14, 15 formed in the block 11. When the trigger 20 is actuated in the clockwise direction a sear 4<SP>1</SP> is moved, via the members 23, 27 and 25, against a leaf spring 29 ; a hammer 5<SP>1</SP> is thereby released. When the trigger 20 is actuated in the anti-clockwise direction the sear 4 is moved and firing through the second barrel 2 is effected. In a modification the drive-transfer members 26, 27 and the members 24, 25 are replaced by levers 34, 35, Fig. 3, pivotally mounted at 33 on a member 32. The lever 34 is urged by a spring 40, Fig. 4, and sear 42 is provided with a lug 42a. The lever 35 is urged by a spring 41, Fig. 5, and sear 421 is provided with a lug 42<SP>1</SP>a. In another embodiment a trigger 55, Fig. 6, has an extension 54, is pivoted at 56, has a protrusion 54b which acts as a cam by engaging a fixed dowel 59 and is urged by a spring 58. In use if the trigger is pressed in an anticlockwise direction, a projection 60 thereon engages a projection 53 of a bell-crank lever 49, 50 so as to move the latter and effect the lifting of the sear 4<SP>1</SP> to fire through one barrel of the gun. Release of the trigger allows its return by the spring 58 and the trigger is then pressed in a clockwise direction to fire through the other barrel of the gun.
Patent GB-1365999-A (GB)
Title: Surface treatment of titanium dioxide pigments
IPC: C09C1/36
Filed: 1972-05-31
Abstract: 1365999 Coated TiO2 LAPORTE INDUSTRIES Ltd 23 May 1973 [31 May 1972] 25433/72 Heading C1N TiO2 particles are coated with hydrous SnO2 and one or both of hydrous TiO2 and hydrous ZrO2, the coating being Al-free. Each oxide may be precipitated on to the TiO2 as a discrete layer, SnO2 first, and this SnO2 may be at least partly dissolved e.g. by adjusting the pH to 0À5-1À5 before forming the next layer. The coatings may be produced by acid-base reactions, e.g. SnCl4, TiCl4, TiSO4, ZrOCl2 or ZrSO4 with NaOH, Na2CO3 or NH4OH, or Na stannate with H2SO4, HCI, HNO3 or acetic acid, or by hydrolyric reaction. The TiO2 may initially be dispersed in water at pH 3À5-8À5. The coated TiO2 may be filtered, washed, dried and fluid energy milled.
Patent GB-1377662-A (GB)
Title: Device for stopping a turntable at selected positions
IPC: G03B23/06
Filed: 1972-05-31
Abstract: 1377662 Controlling position of turntable FUJI PHOTO FILM CO Ltd 31 May 1972 [31 May 1971] 25561/72 Heading G4H  In an arrangement for stopping a turntable at a desired one of 100 positions selected by closure of a "tens" switch 100-109 and "units" switch 90-99, the position of the turntable is encoded by "tens" and "units" groups of cam operated switches 50-59 and 640-649, and a phototransistor 67 co-operates with a notched disc (65) to generate 100 precisely defined clock signals per revolution of the turntable whereby relay R 2  which disengages an electromagnetic clutch 7 and applies an electromagnetic brake 8 is energized at a time independent of inaccuracies in the closing time of the cam operated switches. Relay R1 avoids the need for the "tens" switch to remain closed for the entire scan of the units switches. The turntable may be a magazine for information cards, final selection of a card from one of 100 compartments being performed by a card reader (3, Fig. 1, not shown).