baber/WOPTO huggingface dataset:
Patent GB-1221155-A (GB)
Title: Flashing light signalling device, more particularly for automotive vehicles
IPC: B60Q1/38
Filed: 1969-07-11
Abstract: 1,221,155. Transistor oscillator circuits. SWF-SPEZIALFABRIK FUER AUTOZUBEHOER GUSTAV RAU G.m.b.H. 11 July, 1969 [14 Aug., 1968], No. 35001/69. Heading H3T. [Also in Division G4] In a flashing light signalling device, especially for direction indicating lamps on vehicles, which includes a multivibrator timing device with two transistors T 1 , T 2 , a voltage divider R 2 , R 5  is connected between the negative and positive leads in series with a make contact b controlled by a relay B in the lamp circuit, the tap of the voltage divider being connected via capacitor C 2  to the collector of transistor T 1  and directly to the base of transistor T 2 . In the event of failue of one of the lamps L, a reduced current passes through relay B, contact b remains open, an increased voltage charges capacitor C 2 , and the lights (including a warning light inside the vehicle) flash more rapidly. Resistor R 1  is connected via operating switch T and lamps L to negative, so that the multivibrator stops when the light system is switched off. For this purpose also, the base of transistor T 1  is connected via resistors R 1 , R 4  with the positive lead.
Patent GB-909299-A (GB)
Title: Improvements in or relating to methods of providing an article with oxide layer
IPC: C04B41/50
Filed: 1958-10-31
Abstract: Quartz, glass, ceramic or metal articles are coated with metal oxides such as tin, indium or titanium or with silicon dioxide by heating the articles in an atmosphere of a hydrolysable compound of the metal (or of silicon) together with gases, such as oxygen and hydrogen, which will react on the surface of the article only, to form the water necessary for hydrolysis.  The water may also be formed by combustion of organic compounds such as methyl formate or ether, but substances such as acetone and methanol are not suitable since they react with the material to be hydrolysed. Inert gases such as nitrogen, carbon dioxide and rare gases may be employed as carriers. If desired the hydrolysable compounds may be formed in situ for example by passing a stream of carbon tetrachloride in an inert gas over a mass of tin dioxide or antimony in the reaction vessel and passing the halide vapours so formed, in admixture with the waterforming reacting gases to the coating zone.  According to Examples (1) porcelain rods were placed in a sintered quartz vessel together with a small quantity of sand and the vessel was rotated. The vessel was heated to 700 DEG C. and dry air passed therethrough after which a mixture of dry air, nitrogen and hydrogen, together with tin and antimony chlorides in a nitrogen carrier were passed therethrough; finally the vessel was purged with dry air.  A layer of antimonycontaining tin oxide 0,18 microns thick had been deposited. The resistance of the so-formed layer was a 100 ohms/sq.  Further examples relate to the production of layers 3,5 microns thick and with resistances of 3 ohms and 350 ohms/sq. (4) porcelain rods were treated in the same reactor as in Example (1) at 650 DEG C. with a mixture of air, hydrogen in a nitrogen carrier and titanium tetrachloride in a nitrogen carrier to deposit a 0,5 micron thick titania layer.
Patent GB-938939-A (GB)
Title: Prefabricated structures and elements therefor
IPC: E04H7/28
Filed: 1960-10-13
Abstract: 938,939. Circular building structures; shuttering. A. COHEN. Oct. 13, 1960 [Oct. 26, 1959], No. 35135/60. Classes 20 (1), 20 (2) and 87 (1). A substantially circular structure comprises a number of curved or flat metal &c. plates 1 formed with a pair of opposed undercut flanges 2, 2a having corresponding rounded beads 4 and grooves 5 for interlocking. The plates are held together by undercut channel members 8 and in some cases by clamping members 12 secured by nuts 17 and bolts 15. The outer faces of the flanges 2, 2a are cut away so that the angles between the plates may be varied, gaps such as 6 being formed between them. Structures referred to are hollow pillars, water tanks and shuttering for columns.
Patent GB-1254047-A (GB)
Title: An apparatus for trimming a specimen which is to be cut in a microtome
Inventor: FORSSTROM BO GOSTA
IPC: B24B9/00
Filed: 1969-07-11
Abstract: 1,254,047. Trimming apparatus for microscope specimens. LKB-PRODUKTER AB. July 11, 1969 [July 12, 1968j, No.35148/69. Heading G2J. Apparatus for trimming specimens comprises a knife, a specimen holder which can be rotated about two axes, and drive means for the cutting and feeding actions. The specimen holder 2 is mounted on an arm 28 which may be rotated and secured in predetermined positions relative to a second arm 11, the positions being chosen such that when used the trimmed specimen will have a predetermined shape. The end surface of the arm 11 is provided with series of markings (32) Fig. 9 (not shown) which indicate the necessary settings of the arm 28 for each shape desired. The specimen 1 is fed on to the cutting edge 3a of the knife 3 by rotating a spindle 22, this actuates a bevel gear 51, a spindle 21 and hence a rod 20 which through a system of pivoted arms 13, 17 causes the arm 11 to move longitudinally. The spindle 22 is provided with an eccentric cam 23 around which is journalled a ring 24 and extending around the ring is a wire 25 whose ends are attached to the arm 11. Thus as the spindle 22 rotates the arm moves up and down for the cutting action in addition to the longitudinal feeding action described. The specimen holder 2 is mounted in a segmental shape member (26), Fig. 8 (not shown) fixed to the arm 28 so that the axis of the holder may be set at some angle to the longitudinal axis of the arm 11. The knife holder 36 may contain more than one knife Fig. 8 (not shown) and is mounted for rotation on a plate (41) which is itself mounted on a second plate 43, the plates being individually free to move along one or other of two axes at right angles. A movable lamp 47 illuminates the specimen.
Patent GB-1085553-A (GB)
Title: Battery plates
Inventor: BARNES STANLEY CHARLES
IPC: H01M4/64
Filed: 1963-09-06
Abstract: 1,085,553. Accumulator electrodes. JOSEPH LUCAS (INDUSTRIES) Ltd. Aug. 13, 1964 [Sept. 6, 1963], No. 35255/63. Heading H1B Corrosion of a lead grid that has been dispersion hardened (by the presence of lead oxide particles therethrough) is minimized by adding in the grid, particles of a metal that will be cathodic to the rest of the grid in the presence of the electrolyte contained within the paste. Silver or tungsten may be employed as the cathodic metal.
Patent GB-766655-A (GB)
Title: Improvements in arc-extinguishing means for electric circuit-breakers
IPC: H01H9/44
Filed: 1953-12-18
Abstract: 766,655. Arc-rupturing in switches. ETABLISSEMENTS MERLIN & GERIN SOC. ANON. Dec. 18, 1953 [Dec. 22, 1952; Feb. 13, 1953], No. 35321/53. Class 38(5) In a circuit-breaker comprising a switch blade 9 with an auxiliary blade 10 pivoted thereto, the blade 10 moves in an arcextinguishing chamber 13 detachably secured to the breaker. The chamber comprises a pair of spaced, insulating plates 14, Fig. 3, between which are ceramic plates 15. A comb-shaped element 16 having teeth of different lengths is located between plates 15, the inner ends of the teeth projecting above the edges of the plates to form spaces 17 for the escape of arc gases. Blow-out coils 18, 19 wound for extinguishing light and heavy current arcs respectively and connected to auxiliary electrodes 25, 24 are provided in the chamber. On opening of the breaker, the blade 10 leaves an auxiliary contact 22 after blade 9 has left the main contact 8, and as blade 10 passes electrode 24 one root. of the arc passes to it from contact 22 and connects coil 19 in series with the arc. The blade then passes electrode 25 whilst the arc is blown towards comb 16 by coil 19. When the blade reaches a further auxiliary contact 23 the arc, if still in existence, passes to electrode 25 and coil 18 is connected in series with the arc and coil 19, the combined effect of the coils then blowing the arc against comb 16. Blow-out cheeks 20, 21 are provided externally of the chamber and are preferably sheathed with insulating material. Fig. 7 shows a modification of the chamber wherein the blow-out cheeks are divided into sections 20a, 20b, 21a, 21b to distribute the potential gradient between the cheeks. Counter-cheeks 30 ... 32 are provided and all the cheeks are sheathed in insulation.
Patent GB-1503466-A (GB)
Title: Sound-producing toy
IPC: C23C14/14
Filed: 1976-08-25
Abstract: 1503466 Toy birds TOMY KOGYO CO INC 25 Aug 1976 [29 Aug 1975] 35355/76 Heading A6S A toy, e.g. a toy bird that is operated by pulling two cords 18, 24 moves upwards, simultaneously flapping wings 34, 36 and emitting periodic whistles, and comprises a housing 10 enclosing a rotatable double pulley 58, 66 about which the cords 18, 24 are wrapped and an air-operated whistle 56, a shaft 128 eccentrically mounted to the double pulley 58, 66 actuating both the flapping of the wings 34, 36 and the whistle 56. The wings 34, 36 are pivoted and within the body have slots 118, 120 through which the shaft 128 passes. The whistle 56 comprises a piston 92 close-fitting within a cylinder 88 the lower end of which opens into a whistle chamber 98, 100, 102, 104, 106, the piston having a plate 122 with a slot 124 through which the shaft 128 passes. A beak 28 and tail 30 are fixed to the housing 10.
Patent GB-1336099-A (GB)
Title: Process for the production of orthocarbonic acid esters
IPC: C07C69/96
Filed: 1972-07-20
Abstract: 1336099 Orthocarbonates BAYER AG 28 July 1972 [3 Aug 1971 4 May 1972] 35381/72 Heading C2C Esters of orthocarbonic acid are produced by reacting trichloromethyl isocyanide dichloride with a monofunctional aromatic hydroxy compound or with 2,2,2-trichloroethanol at from 0‹ to 250‹ C. The monofunctional aromatic hydroxy compound preferably has the general formula wherein Ar is an optionally substituted aromatic radical having up to 24 carbon atoms in the ring system.
Patent GB-1499839-A (GB)
Title: Activation of catalyst for dehydrogenation of alkyl aromatic hydrocarbons
IPC: B01J23/86
Filed: 1975-08-27
Abstract: 1499839 Regenerating dehydrogenation catalysts DOW CHEMICAL CO 27 Aug 1975 35407/75 Heading C5E [Also in Division B1] A method of activating a self-regenerative dehydrogenation catalyst (used for dehydrogenating alkyl aromatic hydrocarbons having from 1 to 2 six-membered rings and from 1 to 2 alkyl groups of 2-3 carbon atoms to the corresponding alkenyl aromatic hydrocarbon, by passing a mixture of steam and said alkyl aromatic hydrocarbon over said catalyst at a temperature of 600-700‹ C.) comprises interrupting the feed of said alkyl aromatic hydrocarbon and continuing the feed of steam at said temperature range for a period of 7-30 minutes each 24-48 hours; resuming the feed of said alkyl aromatic hydrocarbon under high severity reaction conditions; and repeating said activation cycles and said alkyl aromatic hydrocarbon dehydrogenation cycles. Self-regenerative catalysts are those containing one or more oxides of Fe, Zn, Cr or Mg as the major component and an alkali metal oxide, hydroxide or carbonate. Examples describe the dehydrogenation of ethyl toluene, ethylbenzene, isopropyl benzene, diethyl benzene using calcined catalyst comprising Fe 2 O 3 , ZnO, K 2 CO 3 , Cu 2 O, Na 2 Cr 2 O 7 , alumina cement, methyl cellulose and graphite.
Patent GB-644815-A (GB)
Title: Improvements in or relating to shoe or the like lasts
IPC: A43D3/02
Filed: 1947-12-31
Abstract: 644,815. Lasts for orthopaedic footwear. TUINDER, H. J. Dec. 31, 1947, No. 35415. Convention date, Nov. 27, 1946. [Class 17(i)] With a view to preventing treading over of footwear, lasts are made with a recessed portion 1, Fig. 1, in the waist extending from immediately behind a location corresponding to the location of the little toe rearwardly to about 3/10ths of the length from the heel end with the deepest portion about 11/24ths. of the last length from the heel end, so that the upper will grip around the foot immediately behind the little toe. The. surface corresponding to the tread surface of the shoe is cut away at the part 4, as shown in Figs. 3, 4, to raise the outer side of the foot at the heel end.
Patent GB-522131-A (GB)
Title: Improvements in or relating to teleprinter exchange systems
IPC: H04L12/02
Filed: 1938-12-06
Abstract: 522,131. Controlling telegraph traffic. STANDARD TELEPHONES & CABLES, Ltd. (Haigh, L. B.). Dec. 6, 1938, No. 35531. [Class 40 (iii)] In order that a receiving station connected to a teleprinter exchange may be enabled to break in without causing the line to be cleared, the transmitting station is adapted to respond to a break-in signal comprising the reiteration of a letter such as T or R or of the spacecombination. To this end a polarized break-in relay Lr in the sending loop SL is partly controlled by the switch SRS, which returns to the receiving position R for 6 milliseconds at the end of each character transmitted, the break-in signal acting on the relay Lr during this interval. An idle sub-station is in the condition shown, the transmitter loop SL being shunted by a resistance Re, while the receiving equipment CB, TPR is in circuit. When the tape transmitter with contacts TC is to be cut in, a tumbler switch is thrown to close contacts K 1 , K 2 , whereupon lamp BIL lights up. Key RK is then operated momentarily ; relay Lr assumes the marking condition L and causes relay Bir to hold open the shunt circuit Re, cut out the lamp BIL, and start the motor M. The relay Lr remains in the marking condition during ordinary traffic, for switch SRS is in position S, so that marking potential is applied to the lower winding of relay Lr, except at the end of each signal for a moment during which, however, marking potential is applied to the upper winding in the sending loop SL. But when a break-in signal comprising a succession of letters T or R or a space combination is received from the distant station, a spacing condition in the loop SL will coincide with some instant during which switch SRS is at R at the end of the transmission of a letter. Relay Lr thereupon assumes the spacing condition, and it retains this condition since its lower winding therefter overpowers its upper winding when switch SRS is on contact S, for resistance Rd is now short-circuited. Relay Bir thereupon releases, cutting in the warning lamp BIL, stopping the motor M, and shunting the sending loop SL. Transmission is restarted by depression of the key RK as before.
Patent GB-321085-A (GB)
Title: Booster pump apparatus for fire extinguishing sprinkler systems
IPC: A62C35/60
Filed: 1928-12-03
Abstract: 321,085. Woosnam, A., (Automatic Sprinkler Co. of America). Dec. 3, 1928. Sprinklers, automatic.-A sprinkler apparatus of the kind in which a pump is employed for supplementing the water pressure in the system should it fall below a predetermined level, is provided with automatic means for testing the effciency of the pump-driving means at recurring intervals, in combination with means for indicating or recording when such automatic means have come into operation. As shown, the pump D is driven by an electric motor L. A pipe from the main riser E supplies a pressure responsive device or gauge G. If the pressure in pipe E falls below a predetermined level, a member in the gauge makes contact at H, closing the electric circuit of the motor and starting the pump. When the pressure is re-established, contact is made at H<1>, opening the circuit. A second gauge N similarly controls audible or visible signalling or recording devices I, I<1> which may be at a distant station when the pressure falls or is re-established. For testing the efficiency of the motor, pump, and control gauges, an outlet valve R from the pipe E is opened at recurring intervals, by means of a cam P<1> on a wheel P. The wheel is driven at a predetermined rate by a clockwork or other suitable device T. The indicating means I, I<1> give notice that the test has been made.
Patent GB-1513297-A (GB)
Title: Substantially non-inflammable copolyesters
IPC: D01F6/84
Filed: 1975-08-29
Abstract: 1513297 Ethers of bromophenols BAYER AG 29 Aug 1975 [30 Aug 1974] 35700/75 Heading C2C [Also in Division C3] 1,4- or 1,2-bis(#-hydroxyethoxy)-2,3,5,6- or - 3,4,5,6-tetrabromobenzene are prepared (Examples 1 and 3 respectively) by reacting hydroquinone or pyrocatechol with bromine and ethylene chlorohydrin. 1,4 - bis(# - Acetoxyethoxy) - 2,5 - dibromobenzene (Example 2) is prepared by reacting bromine with 1,4-bis(#-hydroxyethoxy)benzene in a mixture of acetic acid and acetic anhydride.
Patent GB-774094-A (GB)
Title: Improvements in or relating to pyrimidine compounds
IPC: A61K31/00
Filed: 1953-12-23
Abstract: The invention comprises compounds of the general formula: <FORM:0774094/IV(b)/1> where R1, R2 and R3 represent hydrogen or alkyl groups having from one to eight carbon atoms or aralkyl or monocyclic aryl groups and X is a chloro, mercapto, amino, substituted amino or hydrazino radical, providing further that when at least one of the radicals R1, R2 and R3 is alkyl, aralkyl or aryl X may also be a hydroxy group.  Such compounds are obtained by reacting, suitably at 120 DEG  C., a 2-amino nicotinic acid of the formula: <FORM:0774094/IV(b)/2> with a stoichiometric excess of formamide to give the 4-hydroxy-pyrido-(2,3-d) pyrimidine which may then be further reacted to give the derivatives with groups other than hydroxy at X.  Alternatively compounds of the general formula: <FORM:0774094/IV(b)/3> which are described in Specification 774,095 are treated with Raney nickel to replace the mercapto group by a hydrogen atom. The 4-hydroxy derivative is converted to the mercapto derivative by treatment with phosphorus pentasulphide and to the 4-chloro derivative with phosphoryl chloride.  Reaction of the 4-chloro derivative with ammonia, hydrazine and primary and secondary amines gives amino- and substituted-amino compounds.  In examples: (1) 4-hydroxypyrido-(2,3-d) pyrimidine (from the reaction of a -aminonicotinic acid with formamide) is reacted with phosphorus oxychloride to give 4-chloropyrido-(2,3-d) pyrimidine; (2) and (3) 4-aminopyrido-(2,3-d) pyrimidine is prepared by (2) reaction of 4-chloropyrido-(2,3-d) pyrimidine with ammonia; and (3) by treatment of the corresponding 2-mercapto with Raney nickel in aqueous ammonia; (4) 4-anilinopyrido-(2,3-d) pyrimidine is prepared by reacting aniline with the 4-chloro compound; (5) 4-hydroxypyrido-(2,3-d) pyrimidine is converted to the 4-mercapto-derivative by treatment with phosphorus pentasulphide; (6) 4-hydrazinopyrido-(2,3-d) pyrimidine is obtained by reaction of the corresponding 4-chloro derivative with hydrazine.  In a generally similar manner there are prepared in further examples: (7) 4 - chloro - 7 - methyl -,; (8) 4 - amino - 7 - methyl -; (9) 4 - diethylamino -; (10 4 - hydroxy - 6,7 - dimethyl -; (11) 4 - hydroxy - 6 - methyl - 7 - ethyl -; (12) 4 - hydroxy - 6 - ethyl - 7 - n - propyl -; (13) 4 - hydroxy - 6 - methyl - 7 - n - butyl -; (14) 4 - hydroxy - 7 - isobutyl -; (15) 4 - hydroxy - 6 - methyl - 7 - phenyl -; (16) 4 - hydroxy - 7 - phenyl -; (17) 4 - hydroxy - 6 - ethyl - 7 - phenyl -; (18) 4 - hydroxy - 7 - p-tolyl -; (19) 4 - hydroxy - 6 - phenyl - 7 - benzyl -; and (20) 4 - hydroxy - 5,7 - dimethylpyrido-(2,3-d) pyrimidines.
Patent GB-1517449-A (GB)
Title: Solar energy heater
IPC: F24S10/50
Filed: 1977-10-27
Abstract: 1517449 Utilizing solar heat DBI WICKRAMASURIYA 20 Dec 1976 [28 Aug 1976] 35910/76 Heading F4U A solar energy liquid heater comprises a flexible envelope e.g. of PVC formed with an upper transparent sheet 2 and a lower opaque sheet 3 coloured black and intended to rest on a support surface, which envelope is divided by a third sheet 4 of a dark colour and of thermally absorbtive material into an upper gas-tight container and a lower liquid-tight container 6, each container having at least one closable opening 8 (7). The liquid container has open compartments 6a communicating with the closable opening by heat sealing the sheet 4 to the lower sheet 3 and a pocket 11 accommodates a carrying handle 10.
Patent GB-1471423-A (GB)
Title: Sampling circuits
IPC: H03K7/02
Filed: 1974-08-15
Abstract: 1471423 Sampling circuit WESTERN ELECTRIC CO Inc 15 Aug 1974 [21 Aug 1973] 35924/74 Heading H3T A sampling circuit has the primary winding 14 of a transformer 15 connected between the emitter and collector of a transistor 13, input terminals 11, 12 connected to the collector and base of the transistor, a pulse source (not shown) connected to produce a pulsed voltage across the collector and emitter and a secondary winding 16 connected to a pair of output terminals 24, 25. With an input signal less than a predetermined amplitude and of a polarity to render the transistor 13 non-conductive the pulsed voltage between collector and emitter renders the transistor conductive and is clamped to the sum of the collector-base and base-emitter voltages of the transistor thereby producing a sampled version of the input signal across the secondary winding 16, the transformer remaining unsaturated. The pulse source may be connected as shown to a third winding 17. The windings 14, 16  preferably have a 1 : 1 turns ratio. A diode 26 may be connected across one of the transformer windings poled to reset the transformer. The output path may have a transistor 21 which is also turned on by the pulse and which has a V eb  similar to that of transistor 13. In operation the D.C. isolation between input and output terminals can be high. There is no need for a power supply to be at the potential of the input, which can float. The circuit can be used to sample the output voltage of a D.C./D.C. converter and the sampled voltage used to control a pulse-width modulator on the source side of a power transformer. The sampler and modulator may be driven by a clock (Fig. 2, not shown).