baber/WOPTO huggingface dataset:
Patent GB-1425917-A (GB)
Title: Rms converter
IPC: G01R19/22
Filed: 1972-08-19
Abstract: 1425917 Measuring RMS voltage SOLARTRON ELECTRONIC GROUP Ltd 30 July 1973 [19 Aug 1972] 38789/72 Heading H3H A device for measuring the RMS value of an input signal comprises a bridge 18 of which at least two adjacent arms 10 and 16 on opposite sides of the supply diagonal 17, 13 are resistive temperature sensors with approximately linear coefficients, a first heating element 20 in thermal contact with one (10) of the sensors to which the input voltage is applied, a second heating element 24, substantially identical to the first and in thermal contact with the other sensor (16), integrating means 26-42 connected to receive the voltage across the bridge output diagonal 11, 15 and adapted to produce the time integral of the bridge output voltage divided by time, the output being taken from the integrator output 46 and this output also being fed back to second heating element 24 via means 48-56 to produce a voltage inversely proportional to the output across the bridge supply diagonal. Preferably four identical resistors 10, 12, 14, 16 are used as the bridge arms, resistors 14 and 12 being also arranged in thermal contact with heaters 20 and 24 respectively as shown. When heater 20 is heated by the input voltage, a potential difference arises between points 15 and 11 and is fed to voltage to frequency converter 26. The output pulse train from converter 26 is fed along line 26a to binary counter 28a (or along line 26b to counter 28b when the potential at 15 is less than that at 11). Simultaneously with the application of the input to heater 20, slow clock pulses from 32 are applied to counter 34. When the counts in counters 34 and 28 are equal, equivalence gates 30a generate a pulse which is fed to the up (or down) input of counter 36 and resets counter 28. The count in binary counter 36 represents the RMS voltage and may be taken as a digital output. This digital signal is converted to an analogue voltage by a digital to analogue converter comprising relays 38 which selectively switch reference source 40 to binary weighted resistors 44 and summing amplifier 42 from which the analogue output 46 is taken. This output V y  is fed to heater 24 and to one input of multiplier 48. The multiplier output is fed to the inverting input of amplifier 50, the other input of which is a reference voltage K and the amplifier input which is equal to is fed as supply to the bridge and as the other input to the multiplier 48. The two resistors 12 and 14 may be replaced by constant current sources. Diode 54 prevents the bridge supply voltage exceeding the value of source 56 when the output voltage V y  is very low.
Patent GB-1312520-A (GB)
Title: Fluid flow regulators
IPC: F15B13/06
Filed: 1970-08-12
Abstract: 1312520 Valves ROBERT BOSCH GmbH 12 Aug 1970 [16 Aug 1969] 38818/70 Heading F2V  Supply flow entering spigot 4, is divided into a constant value flow feeding valve port 13 and a residual flow feeding valve port 11, the proportioning being effected by a spool 3 which at one end is adapted to engage a seat 9 and so close port 11 and at its other end is acted upon by a spring 7. Disposed within the valve spool bore 15 is an orifice plate 17, a plate 24 having a plurality of orifices 25 spaced from the plate axis, and a valve closure member 23 which is biased against a seat 21 formed within the spool bore. Dynamic forces derived from the main flow in bore 15 and tending to prematurely unseat member 23 are said to be minimized by plate 24. With the supply exceeding that required to provide the constant valve flow, spool 3 is lifted and the residual flow is vented through port 11. Upon the port 11 being relieved, rapid downward movement of spool 3 is facilitated by unseating of valve member 23. Modifications of the plate 24 and of the closure member 23 are depicted in Figs. 2-4, not shown.
Patent GB-1427944-A (GB)
Title: Radio frequency transmitters
IPC: H03C1/62
Filed: 1973-08-16
Abstract: 1427944 Amplitude modulation TSENTRALNA RAZVOYNA LABORATORIA 16 Aug 1973 [25 Aug 1972] 38859/73 Heading H3R A transmitter comprises an amplitude modulator stage followed by an amplifier, the power supply to the amplifier being varied in dependence on the mean modulation power. The modulation signal is fed to the modulator, e.g. a grid or base modulator circuit and also to a mean level detector which provides a control signal for a controlled rectifier which supplies power to a power amplifier stage connected between the modulator and the aerial.
Patent GB-1456335-A (GB)
Title: Process for preparing diphenylamine from aniline
IPC: B01J21/00
Filed: 1974-09-06
Abstract: 1456335 Preparation of diphenyl amine NEW JAPAN CHEMICAL CO Ltd 6 Sept 1974 [10 Sept 1973] 38993/74 Heading C2C  Diphenylamine is prepared by reacting aniline in a liquid phase in the presence of an amorphous synthetic silica-alumina catalyst containing 5-50% by weight of alumina at a temperature of 320 to 370 C.
Patent GB-1009399-A (GB)
Title: Improvements in or relating to anchor nuts
IPC: F16B37/04
Filed: 1963-10-07
Abstract: 1,009,399. Anchor-nuts; locking nuts; screws. R. PROCTOR. Oct. 5, 1964 [Oct. 7, 1963], No. 39350/63. Heading F2H. An anchor-nut used for securing a part 14 to a part 9 comprises a cage having a peripheral wall 5 formed with slots 6 and having located therein a screw-threaded nut 10 in which holes at right angles to the bore of the nut are provided, said holes extending into the bore and having plugs 11 of hard nylon or soft metal moulded therein and a screw-threaded, headed pin 13 being provided for operation in the nut. The cage is located in the part 9, the open end 8 of the cage being slightly flared to prevent it passing through the aperture. Alternate portions 7 of the cage between the slots 6 are detached at their bottom parts. The inner ends of the plugs 11 are chamfered to form a head against which the conical end of the screwthreaded pin 13 operates. As the pin 13 is advanced into the nut, the plugs 11 are forced outwardly against the parts 7 of the wall of the cage which are thus forced outwardly and firmly locked against the part 9, the pin 13 being locked by the pressure exerted by the pads 11.
Patent GB-1211862-A (GB)
Title: Improvements relating to mowers
Inventor: POWELL FREDERICK ERNEST
IPC: A01D34/74
Filed: 1967-08-26
Abstract: 1,211,862. Tractor hitches; mowers. ORCHARD EQUIPMENT Ltd. 20 Aug., 1968 [26 Aug., 1967], No. 39366/67. Headings A1F and A1P. The description is the same as in Specification 1,180,645, but the claims relate to the ground wheels or skids provided below at least one of the cutters and which are adjustable by means on top of the casing to alter the height of the cutters relative to the ground.
Patent GB-947722-A (GB)
Title: Improvements in or relating to the annealing of materials in elongated form
Inventor: MASON DONALD JOHN
IPC: C21D9/60
Filed: 1960-11-17
Abstract: <PICT:0947722/C3/1> A modified form of the annealing apparatus of the parent Specification comprises a transformer designed for frequencies up to 100 c.p.s. as compared with the apparatus of the parent Specification for which a frequency range of 100 to 2000 c.p.s. is specified with a preferred figure of about 500 c.p.s. The transformer core has one limb 6 upon which the primary winding 32 is wound, and one or more limbs 4, 5 forming gaps 6a, 6b through which the loop or loops 35a of wire forming the secondary winding is or are passed before the heated wire enters the cooling tank 1. The core has a removable yoke 7, and the primary winding 32 is fed through the tap-changing switch 56 of an auto-transformer 55. The wire 35 passes over an entry pulley 36 into a box (not shown) containing an annealing atmosphere of steam, hydrogen or cracked ammonia, and is formed into loops 35a by motor-driven contactor sheaves 10 and 11. On leaving the box the wire passes over a guide pulley 37 carried by a quenching arm 19 mounted for pivotal adjustment in the tank 1, and thence through a cooling column 46 and an air wiper 49 over a pulley 50 to a take up or spooler (not shown).  Water is pumped from the tank 1 to the top of the cooling column 46 by a pump 47.  A practical form of the apparatus is described.
Patent GB-1024070-A (GB)
Title: Chip exhaust system
IPC: B23Q11/00
Filed: 1964-09-29
Abstract: 1,024,070. Milling. TORRINGTON MANUFACTURING CO. Sept. 29, 1964 [May 25, 1964], No. 39581/64. Heading B3K. A slab-milling machine having a cutter rotating about a horizontal axis against the direction of feed comprises a chip pick-up duct adjacent the entry side of the cutter, a surface for deflecting chips upwardly, and an air suction device to draw the chips away. The machine is as described in Specification 1,023,618 and has guide rolls 14, 16, 18, 20 which bend the slab 22 slightly around the back-up roll 12 as the slab passes beneath the cutter. An auxiliary air supply duct 38 is fitted at the exit side of the cutter, the cutter having spaced blades to allow the air to flow freely round the cutter. A further high velocity air stream is applied to the slab by jets 52 communicating with a fan 58. A felt scraper 62 ensures that the slab is completely clean.
Patent GB-1012058-A (GB)
Title: Improvements in or relating to the manufacture of optical elements of zinc oxide
IPC: C04B35/01
Filed: 1962-10-19
Abstract: <PICT:1012058/C1/1> <PICT:1012058/C1/2> Dense polycrystalline zinc oxide is prepared by moulding pure microcrystalline zinc oxide powder at a pressure between 30,000 to 40,000 p.p.s.i. at 600 DEG  to 750 DEG  C. until homogeneous. The oxide is moulded for 10 to 40 minutes in a chamber either evacuated to 0.3 mm. of mercury, or containing an inert atmosphere, after which it is allowed to cool in an inert atmosphere, e.g. argon.  The oxide may be placed in a metallic mounting located in the pressure mould. The density of the moulded zinc oxide is at least 99% of the theoretical.  Suitable apparatus is shown in Fig. 1, where the zinc oxide 10 is moulded in cylinder 12 by plunger 17 having head 8 which may be attached to an hydraulic press. Cylinder 12 and base block 13 are provided with thermocouples 28 and 31 respectively. Cylindrical refractory casing 21 and heating unit 14 surround mould 12.  Outer cylinder 29, with cooling coils 25, encloses chamber 30 which may be evacuated by means of conduit 24. An inert gas may alternatively be held into chamber 30.  Fig. 2 shows induction heating coils 64, water pipe 70 connected to cylindrical water cooling chamber 63, vacuum conduit 65 and vacuum release conduit 66.
Patent GB-982362-A (GB)
Title: Wave soldering apparatus with additive injection means
IPC: B23K3/06
Filed: 1963-10-08
Abstract: 982,362. Soldering. ELECTROVERT MANUFACTURING CO. Ltd. Oct. 8, 1963 [July 30, 1963], No. 39639/63. Heading B3R. A wave soldering apparatus comprises a housing 10 containing molten solder 15, partition means 13 dividing the housing into a solder supply section 17 and a solder return section 16, a port 14 in the partition, pump means 20, 21 to pump solder through the port from the return section to the supply section, a solder discharge nozzle 25 in communication with the supply section and extending upwardly to provide a standing wave 15A of solder overflowing to the return section, a reservoir 32 containing an additive 31 and injection means 30 to inject additive into the melten solder as it is discharged from the pump. The long, narrow and tapering nozzle 25 extends upwardly from an opening 27 in the partition 13 and is supplied with molten solder pumped by a turbine pump having a rotor 20 in the port 14 to provide the overflowing wave 15A over which are passed printed circuit boards for soldering of connections thereto. The additive, e.g. oil, is pumped from the reservoir 32 to an atomizer 30 which directs the oil to the discharge point of the pump rotor 20 so that the solder stream atomizes the oil to produce a -fine and uniformly dispersed emulsion in the solder. In the solder wave the additive coats the solder surface and already soldered areas to prevent oxidation thereof. Instead of oil, soldering fluxes and other chemicals may be injected into the solder.
Patent GB-928464-A (GB)
Title: Mechanical braking mechanism for taping machines and the like
IPC: B65H23/06
Filed: 1959-11-23
Abstract: 928,464. Unwinding threads &c. GEOFFROY-DELORE S.A. Nov. 23, 1959 [Nov. 24, 1958], No. 39653/59. Addition to 850,970. Class 120 (2). [Also in Group XVI] An improvement in or modification of the braking mechanism disclosed in the parent Specification consists of mounting the braking mechanism on a support in operative relation to a reel journalled on the support and holding a roll of tape, wire or the like, the support being adapted to be detachably mounted on a spindle of a multiple winding machine with the reel coaxial with the spindle. As shown, a unit 50 includes a support 1 and reel holding a roll 2 of tape, the reel including a brake drum 3 engaged by a brake shoe 4. The shoe 4 is on an arm 5 of a bell crank-lever pivoted at 9, the other arm 6 being attached to a spring 7 adjustable by a screw 26. The lever 6 has an idler roller 8 around which tape 13 passes before passing around a second roller 10 and a pulley 16 on an arm 17 pivoted at 18 and attached to a counter weight 19. A pointer 20 indicates tension on a scale 21 such that the screw 26 can be adjusted to produce a required tension before fitting the roll 2 on the spindle of a winding machine. A roller 20 is driven by a motor 23 through a variable speed drive 24 to unwind tape 13.
Patent GB-1117777-A (GB)
Title: Forming an annular abutment on a shaft
Inventor: SMALLPIECE COSBY DONALD PHILIP
IPC: F16B21/16
Filed: 1965-09-17
Abstract: 1,117,777. Pistons. MARTONAIR Ltd. 17 Sept., 1965, No. 39673/65. Heading F2T. [Also in Division B3] A piston 14 is attached to a rod 10 by means of an annular ring of material 15 which is swaged into an annular groove 13 and into contact with a face of the piston. If the rod 10 is not stepped but of uniform diameter, the piston can be retained by a swaged ring on either side of the piston. To form a key between each ring and the rod the groove can be formed in straight chordal sections of a polygonal rather than circular shape. Similar grooves 19a, 19b, Fig. 3, can be formed in the piston 20 to produce a key between the rod and piston, or alternatively, radial grooves can be produced in the end wall or walls of the piston 14. A piston with a blind bore can be attached to a rod, by forming the bore adjacent its mouth with an inwardly directed groove.
Patent GB-955535-A (GB)
Title: New n-substituted norgranatanol-(3ª‰)-esters
Inventor: DOLD OTTO
IPC: C07D451/14
Filed: 1962-10-22
Abstract: The invention comprises N-substituted nor-granatanol-(3b )-esters of the general formula: <FORM:0955535/C2/1> where X is a hydrogen atom or a hydroxyl group, Y is a phenyl or cycloalkyl radical, and R1 is an alkyl radical having 1 to 3 carbon atoms or an aralkyl radical, acid addition and quaternary ammonium salts thereof, and their preparation by reaction of N-substituted (3b ) norgranatanols of the general formula: <FORM:0955535/C2/2> with acids of the general formula: <FORM:0955535/C2/3> or their halides or C1-3 alkyl esters. The products possess anti-chlinergic properties.  N-Substituted-(3b )-norgranatanols of the second general formula above are obtained by reduction of the corresponding N-substituted norgranatanons using sodium in a primary alcohol; if reduction is effected by catalytic hydrogenation using Raney nickel or by lithium aluminium hydride the 3a  isomes are obtained.  N-Benzylnorpseudopelletierin is prepared by reaction of glutaric dialdehyde with acetone dicarboxylic acid and benzylamine.
Patent GB-1439285-A (GB)
Title: Shaft coolers
IPC: G12B15/04
Filed: 1973-08-22
Abstract: 1439285 Cooling apparatus BUEHLER AG Gebr 22 Aug 1973 [24 Aug 1972] 39887/73 Heading F4U A shaft cooler, e.g. for animal feed cubes comprises an upper inlet pipe 4, Fig. 1, for introduction of the material for passage through the shaft to a lower discharge element 3, the shaft being formed of superposed elements 1, Fig. 1, each having inverted V-shaped air inlet elements 11 and air outlet elements 17, 18, the elements 17, 18 being connected to a common air discharge duet 22, Fig. 6, outside the shaft by upwardly extending transition means 20 to prevent the passage to the discharge duct of material to be cooled. The air inlet elements are connected with ambient atmosphere through apertures in the side walls of the shaft and the air outlet elements 17, 18 are connected to the transmission means through apertures in one side wall. The elements 11, 17, 18 are downwardly open and have air pervious upper walls and further air inlet elements 13, 13<SP>1</SP> open to entry of ambient air through apertures 16 and 16<SP>1</SP> in the walls are positioned in lean-to arrangement adjacent the side wall of each shaft element. Flap valves 30 each having a counterweight control air flow from each shaft element to the air discharge duct in accordance with the accumulation of material to be cooled. Manual, flap operated air lock discharge means (28) are mounted between the air discharge duct and cube discharge element 3 to permit accumulated particles of material to drop into the discharge element. The element 3 has two inclined guide plates (not shown) and is mounted on swing links 40 to be oscillated in a direction substantially transverse to the elements 11, 17, 18 by vibration generators interconnected by a bracing pipe 55. Means are provided to achieve a periodic variation of air flow through one or all of the shaft elements.
Patent GB-1405967-A (GB)
Title: Polymers useful as pour depresants
IPC: C10L1/196
Filed: 1973-08-23
Abstract: 1405967 N-alkyl acrylate/alkane diol dimethacrylate copolymers TEXACO DEVELOPMENT CORP 23 Aug 1973 [24 Nov 1972] 39958/73 Addition to 1368729 Heading C3P [Also in Divisions C2 and C5] A cross-linked interpolymer of an n-alkyl acrylate mixture and an alkanediol dimethacrylate of a molecular weight between 3000 and 100,000 wherein the alkanediol dimethacrylate moiety has from 10 to 18 carbon atoms, the nalkyl has at least 18 carbon atoms and at least 70 wt. per cent of the n-alkyl in the mixture has from 20 to 24 carbon atoms consisting of between 2 and 65 wt. per cent C 20  alkyl, between 18 and 65 wt. per cent C 22  alkyl and between 8 and 35 wt. per cent C 24  alkyl, the weight ratio of the n-alkyl acrylate mixture moiety to the dimethacrylate moiety in the interpolymer being between 99À5 :0À5 and 95 : 5. In Example II a mixture of n-C 18  to n-C 30+  alkyl acrylates and ethylene glycol dimethacrylate are copolymerized using α,α<SP>1</SP>-azobisisobutyronitrile.
Patent GB-1064375-A (GB)
Title: Shock absorbing device
IPC: B60G17/044
Filed: 1963-10-10
Abstract: 1,064,375. Shock absorbers. M. COUSIN. Oct. 10, 1963, No. 40012/63. Heading F2S. A shock-absorber for a vehicle comprises a valved piston 12 working in a cylinder 11 to pump hydraulic liquid into an upper chamber 16 to provide self-levelling with variable loading of the vehicle. A recess 31 is provided in the cylinder 11 such that, on excess liquid being pumped into the upper chamber or on unloading of the vehicle, the excess liquid flows through the recess to a lower chamber 17. Hydraulic liquid leaks from the reservoir 15 to an auxiliary chamber 20 formed between the cylinder 11 of the shockabsorber and a bellows shaped, deformable cap 18. The hydraulic liquid is allowed to pass back to the reservoir during the outward movement of the valved piston through a one-way valve 24. A diaphragm 4 together with a cover 2 encloses a gas chamber 3. In a modification (Fig. 2, not shown), the reservoir comprises a bellows. The recess (31) is covered by an inner jacket (34) which is formed with metering apertures at the upper end of the recess. In a further embodiment (Fig. 3, not shown), the valve of the piston is formed by the sealing ring, a plurality of helically shaped channels replacing recess 31. The sealing gasket surrounding the piston-rod and forming part of the guide bearing (14) provides two resilient valve members for controlling the flow of fluid between the reservoir and the working chamber and between the reservoir and the auxiliary chamber (20).
Patent GB-843676-A (GB)
Title: New biguanide salts
Inventor: SENIOR NORMAN
IPC: C07C279/26
Filed: 1957-12-31
Abstract: The invention comprises salts of bis-biguanides of the formula: <FORM:0843676/IV(b)/1> (where A is a phenyl radical which may be substituted by alkyl, alkoxy or nitro groups or by halogen; R is hydrogen, alkyl or aralkyl; X is a direct linkage or an alkylene radical of not more than 3 carbon atoms; and m is an integer of 2-12, the polymethylene chain -(CH2)m-being optionally interrupted by oxygen atoms and/or by aromatic nuclei), with C6-C26 aliphatic or olefinic acids or their C-substituted monohydroxy, carboxy or ester derivatives.  Suitable bis-biguanides are 1:6-di-(N1:N11-p-chlorophenyl- and p-chlorobenzyl-biguanido-N5:N51)-hexane, and those disclosed in Specifications 705,838 and 785,937.  Suitable salt-forming acids are arachidic, stearic, palmitic, lauric, oleic, linoleic, linolenic and ricinoleic acids, and esters of a carboxy-substituted C6-26 aliphatic or olefinic acid with a monohydric alcohol or with a partially esterified polyhydric alcohol.  The salts of the invention may be obtained by interacting a C6-26 aliphatic or olefinic acid or a C-substituted derivative thereof, or a salt thereof, with a bis-biguanide of the above formula, or a salt thereof.  The salts of the invention are useful as antimicrobial and antifungal agents (see Group VI).  Specifications 710,105, 815,800 and 815,925 also are referred to.ALSO:Pharmaceutical and veterinary compositions of antimicrobial and antifungal use contain as active agents one or more salts of bis-biguanides, of the formula:  <FORM:0843676/VI/1> (where A is a phenyl radical which may be substituted by alkyl, alkoxy or nitro groups or by halogen; R is hydrogen, alkyl or aralkyl; X is a direct linkage or an alkylene radical of not more than 3 carbon atoms; and n is an integer of 2-12, the polymethylene chain -(CH2)n being optionally interrupted by oxygen atoms and/or aromatic nuclei), with C6-C26 aliphatic or olefinic acids or their C-substituted monohydroxy, carboxy or ester derivatives.  Suitable compositions are solutions, suspensions, ointments, powders and the like.  Other known antimicrobial and antifungal agents may be incorporated in the compositions.  Castor oil is used as a solvent for the active agents in examples, and other specified additives are polyoxyethylene sorbitan monooleate, cetostearyl alcohol and Cetrimide. Specifications 705,838, 710,105, 785,937, 815,800 and 815,925 are referred to.
Patent GB-888712-A (GB)
Title: Electron beam character printing apparatus
IPC: H01J31/06
Filed: 1960-11-25
Abstract: 888,712. Electron beam tubes. INTERNATIONAL BUSINESS MACHINES CORPORATION. Nov. 25, 1960 [Dec. 28, 1959], No. 40537/60. Class 39(1) [Also in Group XVI] In a character printing cathode-ray tube the beam is swept along a linear dielectric member 34, Fig. 2, of glass or mica, which is set in the end wall of the tube and contains groups of apertures 39, the apertures in each group of apertures being selectively blocked as the beam sweeps over them so that the emergent beam takes on the form of a character, e.g. successively " 2 " and " E " as shown in Fig. 3. The beam " prints " the characters on a tape of heat sensitive paper moving past the end wall of the tube. The apertures 39 in the dielectric member 34 are blocked by applying suitable potentials to metal tubes 40 lining the apertures. The leads to the tube 40 are metal strips formed between layers 34a which are assembled together to make up the member 34. To reduce the number of leads required, correspondingly located tubes of each group of apertures are connected in parallel to common control leads and the application of the blocking potentials is synchronised with the beam sweep. The metal tubes 40 are formed by evaporating metal through the apertures. The dielectric member is 34 is located in a slot 26 in the end wall of the tube and the bottom of the slot is closed off by a thin electron permeable sheet 28 of aluminium or beryllium.