baber/WOPTO huggingface dataset:
Patent GB-1434273-A (GB)
Title: Electrical circuit arrangements
IPC: G01R15/08
Filed: 1973-07-31
Abstract: 1434273 Measuring resistance SINA AG FUR INSTRUMENTIERUNG UND AUTOMATIK 31 July 1973 [4 Aug 1972] 36347/73 Heading G1U In measuring the ratio of a voltage divider 16 comprising two resistances which have parasitic reactive components, the divider is used as an attenuator in the feedback in an oscillatory circuit, and the total gain of the circuit is adjusted to make the, circuit oscillate. A Wien bridge oscillator 11, 12 has its output attenuated by the divider 16 and the divider output is fed to the input of the bridge 12 via an impedance match circuit 15. The gain of the amplifier 11 is varied by two independent actions . A variable resistor 13 is used to compensate for the fixed attenuation in the feedback loop (i.e. that provided by the matching stage 15 and bridge 12) and a potentiometer 14 is used to vary the input voltage to the differential amplifier 11 so as to make the total loop gain unity and set the circuit into oscillation. Voltage comparators 20, 21 have levels set to just below the amplifier saturation level and just above zero respectively such that glowing of a diode 22 alone indicates no oscillation, glowing of a diode 23 alone indicates high amplitude oscillation and if both diodes are extinguished, the oscillation has a predetermined level. In order to make the oscillation at the predetermined level more stable, diodes 24 become forward biased at that level bringing a further resistance into parallel with resistors 25, 13. This effectively reduces the gain, tending to keep the output level constant until the diodes are fully forward biased. An indicator linked to the potentiometer wiper indicates the ratio of the potential divider, or the value of a phenomenon affecting the resistance of one part of the divider. Any change in the parasitic reactive elements of the divider are automatically compensated by a change in the frequency of oscillation. For electrical adjustment of the gain, the potentiometer 14 is fixed and its output fed to one input of a multipilier whose output feeds the amplifier 11. The second multiplier input is provided by a variable D.C. bias, which for automatic adjustment may be provided from the rectified amplifier output.
Patent GB-344023-A (GB)
Title: Improvements in telephone switchboards
IPC: H04M5/02
Filed: 1929-11-28
Abstract: 344,023. Manual switchboards. STANDARD TELEPHONES & CABLES, Ltd., Columbia House, Aldwych, London.- (Bell Telephone Manufacturing Co., Soc. Anon. ; 18, Rue Boudewyns, Antwerp, Belgium.) Nov. 28, 1929, No. 36469. [Class 40 (iv).] Switchboards of the double-sided turret type have the vertical jack fields 5 on either side arranged back to back instead of in staggered relationship, the panels 9 being hinged at the bottom or side and the top of the turret having hinged panels 7 to give ready access to the cabling. This construction enables the height of the turret to be reduced, and the ticket-distributing apparatus 10 may be disposed on top of the turret. The relays are mounted on right-angled frames 12 which may be swung forward about pivots 13.
Patent GB-1240523-A (GB)
Title: Improvements in and relating to milking systems
Inventor: DUNCAN LLOYD P
IPC: A01J5/04
Filed: 1968-07-31
Abstract: 1,240,523. Milking machines. ZERO MFG. CO. Inc. 31 July, 1968, No. 36479/68. Heading A1M. In the milking system described in Specification 1,145,801, the bores of the milk discharge pipes 114 are tapered slightly, decreasing in diameter progressively from top to bottom. This ensures that milk discharge pipes are never completely blocked by the milk flow. Thus the cow's teats are subjected to the uniform vacuum of the milk receptacle 115.
Patent GB-445798-A (GB)
Title: Improvements in or relating to the manufacture of cigarettes
IPC: A24C5/47
Filed: 1934-12-20
Abstract: Cigarettes, of the type in which a stub portion and a cigarette portion are secured together and abut endwise, are made by aligning stub and cigarette portions whose aggregate length is greater than the required length of the finished product, pressing the cigarette and stub portions together endwise to reduce their overall length to the desired length, and securing the cigarette and stub portions together by wrapping material.  This may be effected whilst the cigarette and stub are moving axially, for instance by the means described in Specification 430,742, the endwise pressure being effected by the fingers 39.  Alternatively, the apparatus described in Specification 392,266 may be used, the endwise pressure being effected by the spring-actuated plugs 50. The term "stub" is defined as in Specification 430,742. Specification 430,786 also is referred to in the first Provisional Specification.
Patent GB-1186986-A (GB)
Title: Purification Process for Alkoxynitriles.
IPC: B01D3/14
Filed: 1968-07-31
Abstract: 1,186,986. Purification of alkoxynitriles. MONSANTO CO. 31 July, 1968 [1 Aug., 1967], No. 36533/68. Heading C2C. A process for the recovery of a fraction rich in an alkoxynitrile from a feed mixture comprising an alkoxynitrile, a dimer oil and water, comprises passing the feed mixture to a fractional distillation zone in which the temperature and pressure conditions are maintained such that a ternary azeotrope of alkoxynitrile, dimer oil and water is removed as an overhead distillate, and a bottoms product richer in alkoxynitrile than the feed mixture is obtained. The fractional distillation zone which may be operated under sub-atmospheric, atmospheric or super-atmospheric pressures, suitably has an overhead temperature corresponding to an overhead temperature at atmospheric pressure of 85-95 C. and the alkoxynitrile is preferably of the formula where R 1  is an alkyl radical and R 2  is an alkylene radical. The dimer oil may comprise the dimerization product of a diolefinic hydrocarbon having from three to five carbon atoms and the feed mixture may comprise from 75 to 93 wt. per cent of alkoxynitrile, 2 to 10 wt. per cent of dimer oil and 5 to 15 wt. per cent of water.
Patent GB-946391-A (GB)
Title: Improvements in seating
IPC: A47C1/12
Filed: 1962-09-26
Abstract: 946,391. Seats. HERMAN MILLER Inc. Sept. 26, 1962 [Oct. 2, 1961], No. 36576/62. Headings A4J and A4W. A seat comprises identical cast aluminium frames 3 joined by one or more flexible pads of fabric reinforced vinyl, forming seats and backs, whose edges are clamped between the frames 3 and cover members 20, 40, and fastened by pins 32 mounted between the frames and cover members 20, 40 and passing through openings 63 in the edges of the pad or pads. Identical back and seat pads 60, 61 can be used which are connected to the frames 3 with ridges 62 on the pads 60, 61 fitting into channels 10, 13 and recesses 42, 26 in the back and seat portions of the frames 3. The cover members 20, 40 are secured to the frames 3 by hooking their outer ends 21, 41 over the ends of the frames 3 and tightening cap screws 29, 49. Arm rests 43 are formed integral with the cover members 40 with pads 46 attached to them. Single seats can be formed or rows of seats with some frames 3 common to two seats. The cover members and pads are easily detachable for replacement or cleaning.
Patent GB-882088-A (GB)
Title: Organopolysiloxane compositions for impregnating fibrous materials, especially leather
Filed: 1958-11-13
Abstract: A composition, for rendering leather and textiles water repellent, comprises (by weight) (1) 50 to 98% of one or more p organopolysiloxanes and (2) 2 to 50% of the reaction product of (a) a titanium ester and (b) formaldehyde or a compound engendering formaldehyde.  Suitable siloxanes containing alkyl, alkenyl, aryl, alkaryl, aralkyl or cycloaliphatic radicals, are disclosed in Specifications 680,265, 686,212, 708,821, 729,608, 766,864 and 773,347.  Suitable siloxane mixtures are (a) a siloxane of the average formula R1ySiO 4-y/2 wherein each R1 is an alkyl or alkenyl radical of 1 to 3 C atoms and y=2,0 to 2,9, and a copolymer of (CH3)3SiO 1/2 and SiO2 units having a average CH3/Si ratio of from 1 to 2,4, (b) a liquid methylsiloxane (CH3/Si=2,0 to 2,9) and a siloxane of the formula (CH3)aHb SiO 4-a-b/2, wherein a=1 to 1,5, b=0,75 to 1,25 and a+b=2 to 2,25 and optionally a methylsiloxane resin (CH3/Si=1 to 1,25, (c) the above copolymer of (CH3)3SiO 1/2 and SiO2 units and a dimethylsiloxane, and (d) an organosiloxane containing per Si atom an average of 0,5 to 1 Sibond H atoms and a total of 1,6 to 2,5 H atoms and hydrocarbon radicals and a liquid siloxane containing Si-bonded OH groups.  The titanium compounds are made by reacting a titanium ester preferably of an alcohol containing 3 to 10 C atoms with formaldehyde, paraformaldehyde or trioxymethylene, usually at 85 DEG  to 115 DEG C. (see Group IV(b)). The composition can be used as such or as a solution in benzine, benzene, toluene, xylene or perchloroethylene.  Examples are given. In Example (4) a polymeric titanate obtained by hydrolyzing tetrabutyl titanate, was reacted with formaldehyde.  Specification 762,819 also is referred to.ALSO:Titanium compounds are made by reacting a titanium ester, especially one of the formula Ti(OR)4, where each R is a monovalent hydrocarbon radical of 3 to 10 C atoms, or a partial hydrolysate of such ester, with formaldehyde or a compound engendering formaldehyde, e.g. paraformaldehyde or trioxymethylene.  The reaction may be effected in the vapour phase or in solution in an inert solvent.  The reaction with formaldehyde is usually effected at 85 DEG C. to 115 DEG C. and preferably with 4 mols of formaldehyde per mol of titanium ester.  Upon completion of the reaction, unreacted formaldehyde and lighter liquid components are distilled off.  In Example (1) paraformaldehyde was added to tetrabutyltitanate heated to 90 DEG C. After completion of the reaction (in 45 minutes) all materials boiling below 115 DEG C. were distilled off leaving a residue having a viscosity of 23 sec. at 25 DEG C. when measured in a No. 4 Ford cup.
Patent GB-1473740-A (GB)
Title: Resistors
IPC: H01C10/40
Filed: 1974-08-21
Abstract: 1473740 Variable resistors WILHELM RUF KG 21 Aug 1974 [30 Aug 1973] 36756/74 Heading HIS  A variable resistor device comprises a spring wiper 25 having arms 27, 24 respectively sliding along a resistance element 18 and a collector element 20 which is in the form of a wire located in a longitudinal slot 26 in wiper carrier 22. A rotary knob 1 has a pinion 32 which passes through a bore 33 in carrier 22 and which has teeth meshing with racks 34, 35 on an insulating housing 3. The carrier 22 also has a longitudinal slot 30 which is guided along a rib 31 on a housing cover 4. Wire 20 is supported by struts 37  and grooves (21, Fig. 3, not shown) in end walls of housing 3, and its ends are bent at rightangles to project from the housing and form soldering tags. A switch (2, Fig. 1, not shown) is provided at one end of the device.
Patent GB-1411217-A (GB)
Title: Control apparatus
IPC: B23Q5/22
Filed: 1971-08-05
Abstract: 1411217 Photo-electric motor control WICKMAN MACHINE TOOL SALES Ltd 27 July 1972 [5 Aug 1971] 36762/71 Heading G1A [Also in Divisions G3 H1 and H2] A stepping motor 17 is supplied through a decoder and selector 19 and an amplifier 20, the former element being controlled by either one of two control circuits 12, 14, 21, 22 and 13, 15, 18 whereby the motor may drive in a desired direction of rotation at a desired speed through manual operation of rotary knobs associated respectively with members 12, 13, the knob of member 12 being adjustable in either direction from a centrezero position to a fixed angular position representative of a desired speed and the knob of member 13 being continuously rotatable in either direction to produce a motor speed dependant upon the speed of knob rotation. Member 12 produces a signal which controls an oscillator 21 supplying a binary counter 22, a switch 14 being operable to change the speed range of the control. Member 13 produces a signal which is fed to a data selector 18, a further speed range switch 15 being associated with this control. Fig. 5 shows the member 13 which consists of a rotatable knob (having the same reference) operating a shaft 23 carrying a disc 25 having four radially-displaced rows of holes forming inner and outer pairs, the rows of each pair being circumferentially offset, Fig. 6 (not shown). Each row co-operates with a light source 34 and photo-electric cell 35 so that rotation of the knob 13a produces a signal pattern whose nature and frequency depends on the direction and speed of the knob rotation, which signal pattern is fed to the data selector 18. Tactile indication of the relationship between knob movement and the number of steps of the motor is provided by a flange 27 having serrations engaging a spring detent 36 on the housing 24. Instead of using photo-electric means, the signal pattern may be produced by using a disc 25 having rows of depressions or alternating conductive and non- conductive portions which control or constitute switch contacts. Fig. 7 shows the member 12 which consists of a rotatable knob (having the same reference) operating a shaft 37 carrying a cam 45 controlling micro-switches 49, 51 determining the - direction of motor rotation. The cam also carries a pin 43 co-operating with 180 degrees arcuate slots 44 in discs 41, 42 spring-urged against a stop corresponding to the centre-zero position of the knob, Fig. 8 (not shown), the slots being diametrically opposed so that operation of the knob moves one or other of the discs via members 43, 45, after which a locking mechanism is operated, Fig. 9 (not shown) to hold members 37, 41 or 42 and 45 in the set position. The shaft 37 also operates a rotary potentiometer 39 which controls the frequency of the oscillator 21. The stepping motor and its control apparatus may be duplicated to control the two lead screw operated slides which adjust the position of the grinding wheel of a grinding machine, Figs. 1, 2 and 3 (not shown).
Patent GB-1259882-A (GB)
Title: Means for producing an adjustable range marker in radar or sonar equipment
IPC: G01S7/22
Filed: 1969-07-22
Abstract: 1,259,882. Wave-energy echo-ranging. FRIED KRUPP G.m.b.H. 22 July, 1969 [23 July, 1968], No. 36847/69. Heading H4D. In a radar or sonar cathode-ray tube 2 plan position indicator system a selectable range ring strobe is produced utilizing a clock pulse generator 7, a selector 9 and a pulse counter 8. Fixed range markers may also be produced via gates 15, 16, 17.
Patent GB-1525113-A (GB)
Title: Method of mounting a light-responsive wafer and assembly produced by the method
IPC: H01L31/08
Filed: 1975-09-09
Abstract: 1525113 Mounting of semi-conductor targets RCA CORPORATION 9 Sept 1975 [9 Sept 1974] 37036/75 Heading H1K A semiconductor wafer 12 with a lightsensitive surface 18, is attached to a transparent plate 14, in particular of a vidicon camera tube 16, by using a transparent adhesive 22, preferably transmitting more than 75% of the incident light, the adhesive extending beyond the wafer and having a peripheral edge portion covered by a low vapour pressure sealant material 28. The adhesive 22 is preferably a thin layer of cured low-vapour pressure epoxy resin, e.g. Araldite (Regd. Trade Mark) and is derived of air bubbles having dimensions larger than the desired resolution of the camera tube. The sealant material 28, preferably of an electrically conductive gold epoxy resin, seals the annular peripheral portion, e.g. of the adhesive so as to prevent contamination of the evacuated camera tube due to degassing and also provides electrical connection between the wafer through an indium ring 60, and a metal ring 62. In the embodiment of Fig. 3 (not shown) an annular peripheral thick portion (124) of the wafer sits in an annular groove provided in the transparent plate (114). An apparatus, Fig. 4 (not shown) for the assembly of the wafer and the plate 14, comprises a vacuum chamber, a weight (46) and the plate suspended from a pulley in the chamber, the weight being attached to the plate and an inner surface 20 of the plate being parallel to and facing the wafer supported on a block 40. Prior to the assembly, adhesive material on the wafer in uncured and viscous form, is degassed in vacuum, and after the plate is lowered on the block (40) to spread the adhesive between the plate and the wafer, air is let in the vacuum chamber when residual air bubbles in the uncured adhesive collapse to dimensions smaller than 10 microns.
Patent GB-1157690-A (GB)
Title: Improvements in or relating to Unloading Tipping Vehicle Bodies
IPC: B65D88/56
Filed: 1966-08-18
Abstract: 1,157,690. Unloading vehicles by tipping containers. KONINKLIJKE ZWAVELZUURFABRIEKEN VOORHEEN KETJEN N.V. 18 Aug., 1966 [20 Aug., 1965], No. 37054/66. Heading B8E. The load carrying body of a trailer 12 is divided into two or more containers 1a, 1b by walls 3a, 3b at an angle to the longitudinal axis of the vehicle. Each container is provided with a discharge device 4, 5 in the acute angles formed by the walls and can be tipped respectively by lifting devices 6, 7 about pivots 11 or 12 on the other container. The pivots 11, 12 are connected on each side by levers 10 which can be fixed relative to each container by pins insertable in holes 13, 14 respectively. Interlocks allow only one lifting device 6, 7 to operate at a time to tip its container to discharge it through the respective device 4, 5 adjacent the centre of the trailer. In a modification only one partition wall is provided and the body can be tipped by lifting devices about either end to discharge the container tipped towards its central discharge device. The arrangement allows the point of discharge to be 2.5-3 m. above the ground.
Patent GB-512111-A (GB)
Title: Process for the clarification of fouled regenerating baths used in the manufacture of regenerated cellulose from viscose
IPC: D01F13/02
Filed: 1938-12-20
Abstract: 512,111. Froth flotation processes. FAIRWEATHER, H. G. C. (Manville Jenckes Corporation). Dec. 20, 1938, No. 37063. [Class 82 (ii)] Fouled regenerating baths which have been used for the regeneration of hydrated cellulose from viscose and which contain sulphur set free by decomposition of the viscose are clarified by froth flotation, the sulphur and other impurities being removed as a froth. The flotation may be effected by aeration only or with the addition of flotation reagents such as a saturated hydrocarbon, e.g. kerosene, or a dithiophosphoric acid compound. Examples are given showing the clarification of a bath containing when fresh 130 gms. sulphuric acid, 250 gms. sodium sulphate, and 14 gms. zinc sulphate per litre, the flotation being carried out (a) with no flotation reagents, (b) with a dicresyldithio phosphoric acid (Aerofloat 15), (c) with a frother containing a mixture of higher alcohols, (d) with kerosene, and (e) with cresylic acid. The flotation may take place in a mechanical or pneumatic machine.
Patent GB-302984-A (GB)
Title: Process for the manufacture of alkylamino-alkylamino derivatives of aromatic compounds
IPC: C07C209/18
Filed: 1927-06-23
Abstract: 302,984. I. G. Farbenindustrie Akt.- Ges., and Carpmael, A. June 23, 1927. Divided on 274,058, under which a Specification wax laid open to inspection under Sect. 91 of the Acts, July 9, 1927, and addition to 267,169 and 274,058. Alkylaminoalkylamino compounds.-The process of Specification 274,058 is modified to yield compounds in which the aliphatic side chain is interrupted by oxygen or sulphur atoms or by secondary or tertiary amino groups. In examples. products are obtained by condensing 3-methoxy- 4-isopropyloxyaniline with # - diethylamino-#<1>- chlor-diethylsulphide (Specification 286,087), #- diethylamino-#<1>-chlor-diethylether (Specification 286,087), and ethyldiethylaminoethylaminoethylchloride. 3-Methoxy-4-isopropyloxyaniline is made by alkylating 2-methoxy-4-nitrophenol with isopropyl bromide and reducing the product. Ethyldiethylaminoethylaminoethylchloride is made by treating ethyldiethylaminoethylamine with ethylene oxide, and chlorinating the product by means of thionyl chloride.
Patent GB-836442-A (GB)
Title: Air filters
Inventor: KNIGHT BASIL EDWARD
IPC: B04C1/00
Filed: 1956-12-06
Abstract: 836,442. Combining spray generated in industrial processes. C. A. V. Ltd. Dec. 4, 1957 [Dec. 6, 1956], No. 37296/56. Class 8(2). Spray generated by a nozzle f within a draught box a is drawn through a duct b within the box a and then through a duct g by a rotary fan h which discharges through a filter screen j into a clean air and coalesced particle collecting chamber k and from thence radially inwardly to a return air duct m leading to a duct c formed by the walls of the box a and duct b. The nozzle f projects through an end window of the box a whereby the form of the spray e.g. of liquid fuel may be observed.
Patent GB-778159-A (GB)
Title: Improvements in and relating to dynamoelectric machines
IPC: H02K3/50
Filed: 1955-12-30
Abstract: The insulation of a dynamo-electric machine is protected by coating with an alkyd resin, preferably oil-modified, and then with an air drying methyl polysiloxane resin (see Group XXXV). The alkyd resin may be prepared by co-reacting 975 parts glycerine, 260 parts ethylene glycol, 2271 parts phthalic anhydride, 298 parts soya fatty acids, 747 parts oiticica oil, and 1955 parts rosin.  This is dissolved in a solvent comprising xylene and naphtha to a resin solids content of about 60 per cent, and 0.25 per cent cobalt naphthenate drier is added.  After dipping the wound core, curing is effected by heating to 160 DEG  C. for four hours.  The organopolysiloxane resin is preferably a methylpolysiloxane obtained by cohydrolising with water and toluene, 75-95 per cent methyltrichlorosilane and 5-25 per cent dimethyldichlorosilane, preferably 90 and 10 per cent respectively, in a solution of a higher alcohol, e.g. secondary butyl alcohol, and an aromatic hydrocarbon, e.g. xylene or toluene.  After hydrolysis, the resin is washed to reduce acidity, adjusted to about 35 per cent solids in toluene, and then bodied with caustic, e.g. 0.08 per cent potassium hydroxide at room temperature until a viscosity of 200-1500 centipoises is obtained.  Then the condensing agent is neutralized with acetic acid and the resin adjusted to 5-20 per cent, e.g. 10 per cent solids content with additional toluene or xylene.  The resultant resin should contain 1.05 to 1.5 per cent methyl groups per silicon atom. Alternatively an 8 per cent solution of methyl phenylpolysiloxane resin may be used obtained by cohydrolysing 48 parts phenyltrichlorosilane, 28 parts diphenyldichlorosilane, and 31 parts of a blend of methyltrichlorosilane and dimethyldichlorosilane.
Patent GB-1299037-A (GB)
Title: Dithiocarbamic acid esters
Inventor: MADAUS ROLF
IPC: A61K/
Filed: 1971-08-10
Abstract: 1299037 Dithiocarbamic acid esters DR MADAUS & CO 10 Aug 1971 [22 Aug 1970] 37507/71 Heading C2C Novel compounds (I) of the type where R is an aliphatic or aromatic radical, are made by reacting cysteine with RNCS. Pharmaceutical preparations having antibacterial and antimycotic action contain (I) as active ingredient. Administration is e.g. orally.
Patent GB-376274-A (GB)
Abstract: 376,274. Ignition systems and magnetos. SOC. DES MOTEURS SALMSON, 68, Rue Pierre Charron, Paris. March 6, 1931, No. 7020. Convention date, March 18, 1930. [Class 7 (iv).] The primary winding 1 of a stationary transformer may, by means of a terminal 10 and a switch 11, be connected either to earth or to a battery or other current source. The magnet 17 with radial laminated polepieces 24, 25 rotates on the shaft 20 to which the interrupter cam 5 and distributer rotor 49 are also secured. The cam bosses and depressions are so arranged that the primary circuit is made and broken only when the magnetic flux is in the same direction as that produced by the battery. The main frame carries laminated polepieces extending parallel to the magnet 17 and having shoes extending beneath the transformer. A condenser 6 is in shunt with the interrupter which may be adjusted by means of an arm projecting from the plate 35.