baber/WOPTO huggingface dataset:
Patent GB-1194877-A (GB)
Title: Improvements in or relating to apparatus for the control of an electric current
IPC: G05F1/455
Filed: 1967-09-28
Abstract: 1,194,877. Rectifiers; supply systems for A.C. or D.C. loads. AUCO N.V. 28 Sept., 1967 [29 Sept., 1966], No. 44277/67. Headings H2F and H2H. In a power supply for an A.C. or a D.C. load Rw or Rg of the type comprising a rectifier bridge D1-D4 controlled by varying the firing angle of a thyristor T, the firing pulses are obtained from a control amplifier RV connected across the output of a bridge circuit formed by resistors R1-R4 and capacitors C1, C2 whose values are chosen and/or adjustable to provide a firing range for the thyristor over substantially the whole of each half wave of voltage supplied by the rectifier bridge. In practice the values of resistors R1-R4 (of which R4 may be variable) provide for variation of the firing angle over the first half of each half wave, whilst the value of capacitor C2 extends the firing range to the second half. The capacitor C1 has a relatively low value, and a discussion is given of the voltage/time characteristics at the points A, B produced by various values of C1 and C2, Fig. 2 (not shown). These characteristics may be further altered by additional capacitors C4, C5 which are chosen to have opposite effects on the rate of change of the firing angle when the resistor R3 decreases due to a change in ambient temperature. A resistor R6 may be added to produce asymmetrical firing of the thyristor, that is firing during every other half wave of rectified voltage. The control amplifier RV may comprise one or more transistors or an ngate thyristor, Figs. 3a-3e (not shown). Members D1-D4 may be Zener diodes or may be replaced by two opposed diodes seriesconnected across the A.C. supply, with one diode in parallel with a capacitor, Fig. 4 (not shown). The load may be an incandescent lamp or a squirrel-cage induction motor and, in the former case, capacitors C1, C2 are chosen to provide a linear relation between the setting of the variable resistor and the light output of the lamp.
Patent GB-1525266-A (GB)
Title: Structural elements for assembly construction
IPC: E04B1/20
Filed: 1975-10-28
Abstract: 1525266 Prefabricated multistory buildings H W POLLEHN 28 Oct 1975 [12 Dec 1974] 44279/75 Heading E1A [Also in Division F2] Prefabricated structural elements, e.g. reinforced concrete upright supports 1 and floor elements 2 of a building, are connected together by joints each comprising a spigot of tapering form the cross-section of which decreases towards its free end such that its tapering face 3, as seen in axial cross-section, is curved from a maximum diameter portion towards the spigot axis and becomes cylindrical at its minimum diameter free end, and a socket whose contacting face 4 is of complementary form, the spigot and socket being provided on respective elements. One of the elements may be a hollow connecting piece 20, Fig. 8, for joining a number of elongate structural elements 21 which are secured in place by turnbuckles 19. The faces 3, 4 may be provided with mutually opposed recesses 10 which are filled with mortar prior to assembly prior to assembling the joint between a support 5, Fig. 3, and a floor or ceiling 8. Sealing material may alternatively be used between the faces 3 and 4. A further support 7 is assembled on the support 5 by a steel tube 11 which is cast in the spigot and secured within the support 7 by mortar. A bolt 16, Fig. 6, is used to secure a horizontal element 15 to a wall element 14. Various building structures using the joints described above are described (Figs. 9-29), of which a typical structure, Fig. 26, comprises hollow support columns interconnected by steel tubes 35, services being passed through the interior of the columns. In an alternative construction, Fig. 29, ceiling panels 26 rest on supports carried on columns by joints as described above, and are secured by steel loop reinforcements 37 set in concrete.
Patent GB-976163-A (GB)
Title: Improvements in and relating to grease-discharging means
Inventor: CHEMINANT ERIC LE
IPC: F16N5/02
Filed: 1962-11-23
Abstract: 976,163. Reciprocating pumps. WALL MACNAUGHT PTY. Ltd. Nov. 23, 1962, No. 44389/62. Heading F1A. Grease discharge means is supplied with grease under pressure and comprises a pair of cylinders 6, 7 having plungers 23, 25, respectively, which are actuated by a lever 3. The pressure of the grease is sufficient to open a valve 16 and as the lever 3 is actuated, the rise in pressure in the cylinder 6 closes the valve 16, whereupon grease passes through ports 26, 27, into the cylinder 7 and to the outlet 5a To obtain a smaller quantity of grease at a higher pressure, the valve 16 is held open by a screwed rod 18 and the pressure in the cylinder 7 closes a valve 30 so that the contents are ejected. A port 21 has a screw fitted which may be removed to bleed air from the cylinder 6.
Patent GB-1522595-A (GB)
Title: Recovery of oil
IPC: E21B43/20
Filed: 1975-12-23
Abstract: 1522595 Oil recovery UNITED KING- DOM ATOMIC ENERGY AUTHORITY 23 Dec 1975 [14 Oct 1974 (2)] 44457/74 and 44458/74 Heading E1F In the secondary recovery of oil by water flooding a permeable oil bearing stratum having clay-like particles in pores therein, saline water having a relatively low ionic concentration of sodium chloride is injected into the stratum to cause the day-like particles to swell and eject oil contained in the pores, and subsequently saline water having a relatively higher ionic concentration of sodium chloride is injected to cause the swollen clay-like particles to shrink, thereby to enable the ejected oil to be recovered by the higher ionic concentration saline water.
Patent GB-1292709-A (GB)
Title: Fuel cell stack
Inventor: ADLHART OTTO JAKOB
IPC: H01M8/24
Filed: 1970-09-17
Abstract: 1292709 Automatic control of temperature ENGELHARD MINERALS & CHEMICALS CORP 17 Sept 1970 [18 Sept 1969] 44533/70 Heading G3R [Also in Division H1] A system employing a fuel cell 44, see Heading H1B, includes a storage tank 40 of ammonia for supplying the hydrogen fuel, the ammonia passing to a cracker 42 and the effluent H 2  -N 2  steam passing to the fuel cell via a purifier 43. The air is supplied via a filter 45 and blower 46 controlled by a motor 47 in response to a temperature sensor 48 situated at the entrance to the active part of the fuel cell and sensing the temperature of the air. The cracker 42 has its heater supplied with electrical energy from the fuel cell through a control device 49 responsive to a temperature sensor 50 in the cracker.
Patent GB-1218459-A (GB)
Title: Processes for the production of peptides and proteins
IPC: C07K7/14
Filed: 1968-09-19
Abstract: 1,218,459. Peptide derivatives of graft polymers. IMPERIAL CHEMICAL INDUSTRIES OF AUSTRALIA & NEW ZEALAND Ltd., and MONASH UNIVERSITY. 19 Sept., 1968 [21 Sept., 1967], No. 44616/68. Heading C3G. [Also in Division C2] A peptide or protein is prepared by (1) reacting a first protected amino acid which, optionally, may be attached to a peptide or part of a peptide, with a copolymer which is characterized in that it is a graft copolymer of a chemically inert polymeric backbone and grafted-on side chains comprising a multiplicity of mer units of formula wherein X is at least one amino acid reactive group forming a bond with the first amino acid sufficiently strong not to be cleaved during subsequent reaction of said first amino acid or peptide with a second amino acid or peptide and Y stands for one or more optional substituents which is non-reactive to amino acids, to form a stable linkage between the protected amino acid and the copolymer; (2) deprotecting the aminoacid- or peptide-copolymer complex formed by removing the protecting group; (3) coupling at least one further protected amino acid or peptide with the deprotected reactive group of the first amino acid- or peptide-copolymer complex obtained in (2); optionally, alternately repeating one or more times the removal step (2) of the protecting group from the last amino acid attached to the peptide chain-copolymer complex and the coupling step (3) with yet a further amino acid or peptide; and (5) optionally cleaving the desired peptide from the peptidecopolymer complex by rupture of one selected bond in the chain. The inert polymeric backbone may be a polyphenylene oxide, polyimide, poly-(paraxylylene), poly-(halofluoroalkylene), phenol-formaldehyde resin or polyolefin. Specified X groups are where Z is the residue of a strong acid, and -LNMR<SP>11</SP>, wherein L is a linking group preserving the basicity of the amino group and R<SP>11</SP> is a C 1  to C 4 -alkyl group. The protecting group attached to the amino acid may be a carbobenzoxy, o-nitrophenylsulphenyl or t-butyloxycarbonyl group when the amino group is protected or an ester group when the carboxy group is protected. The amino acids are coupled in step (3) by the carbodiimide or p-nitrophenol ester method. The deprotecting step (2) and cleaving step (5) may be carried out using an anhydrous hydrogen halide. In the examples, (1) the tripeptide gly-l-leu-gly is prepared with the aid of poly-(trifluorochloroethylene-g-chloromethyl styrene) or poly-(tetrafluoroethylene-gchloromethyl styrene), (2) and (3) L-iso-leucylim - benzyl - L - histidyl - L - prolyl - L - phenylalanine and L-aspartyl - L - arginyl - L - valyl- L - tyrosyl - L - isoleucyl - L - histidyl - L - prolyl-L-phenylalanine are prepared using the former graft copolymer and (4) and (5) L- aspartyl - L - arginyl - L - valyl - L - tyrosyl - L- isoleucyl - L - histidyl - L - prolyl - L - phenylalanyl - L - histidyl - L - leucine and L - valyl- L-prolpyl-L-phenylalanine are prepared using poly-(tetrafluoroethylene-g-chloromethyl styrene).
Patent GB-1515617-A (GB)
Title: Domestic refrigerator
IPC: E05D3/04
Filed: 1976-10-27
Abstract: 1515617 Hinges PHILIPS' GLOEILAMPENFABRIEKEN NV 27 Oct 1976 [30 Oct 1975] 44623/76 Heading E2F [Also in Division F4] In a refrigerator having upper and lower doors 1, 2, both vertical edges of each door are provided with hinges 7, 7'-10, 10' and the hinges on one vertical edge of each door have to be removed before use. As shown, the lower and upper hinges 8, 9, of the upper and lower doors comprise plates 81, 91 having overlying holes 82, 83, 92, 93 for securing screws. The plate 91 is housed in a guide 84 mounted on the plate 81, and the plates are provided with hinge pins 88, 95. The arrangement is such as to allow the unrequired hinges to be removed without removing the doors.
Patent GB-1214383-A (GB)
Title: Frequency preparation on the principle of the digital counting process
IPC: H03L7/23
Filed: 1968-09-20
Abstract: 1,214,383. Frequency synthesisers. TELEFUNKENPATENTVERWERTUNGS G.m.b.H. 20 Sept., 1968 [22 Sept., 1967], No. 44767/68. Headings H3A and H3F. A frequency synthesizer comprises a number of cascaded stages in each of which an electronically tunable generator is used in obtaining a frequency which is divided in a digital counter of variable division ratio. The output from the counter is compared in a discriminator with a fixed frequency derived from a quartz crystal oscillator and the direct voltage so produced is applied over an amplifier of variable gain to tune the generator. Successive stages give finer degrees of tuning and the input to the divider in the first stage comprises the direct output from its generator: in each of the following stages, however the input to the divider comprises the difference frequency between the output of the generator of that stage and that from the preceding stage. In an embodiment electronically variable generator G1 in the first stage feeds via band pass filter TV1 into mixer M of a second stage and also via a divider T1 of fixed ratio into a divider comprising variable digital counter Z 1. The output from counter Z1 is fed to frequency discriminator D1 the other input of which is derived from quartz crystal oscillator OG via fixed divider and filter T 1<SP>1</SP>. The output from discriminator D1 controls the frequency of generator G1 to which it is applied via variable gain amplifier RV1. In the second stage, electronically variable generator G2 feeds a second input to mixer M, the difference frequency being selected from the output by band pass filter BP and applied to digital counter Z2. The counter output is applied to discriminator D2 the other input of which is derived from crystal oscillator OG via a fixed divider and filter T2<SP>1</SP>, the discriminator output being used to control the frequency of generator G2 to which it is applied over variable gain amplifier RV2. The final output is taken from generator G2, but the arrangement may comprise further stages giving successively finer tuning (Fig. 1, not shown).
Patent GB-1025089-A (GB)
Title: A control valve with an electric switch
IPC: F15B13/04
Filed: 1964-11-03
Abstract: 1,025,089. Hydraulic control systems. PARKER-HANNIFIN CORPORATION. Nov. 3, 1964 [Nov. 5, 1963], No. 44814/64. Heading F1P. [Also in Division H2] Energization of an electric motor 25 driving a pump 2 delivering hydraulic fluid to one or other side of a double-acting piston and cylinder device 3 through a manually-operated inlet and outlet spool valve 1 is effected by a switch 32 when the latter is activated by movement of the valve spool 20 from the neutral position shown to one or other of its operative positions. The valve housing 5 has an inlet 10 connected to feed passages 11 and branch passages 9 which in the neutral position of the spool are connected to a by-pass 7 leading to a supply tank 4 and on moving the spool 20 to the right against its centering spring 21 the switch 32 is closed thereby starting the motor under no load before spool land 26 closes connection between by-pass 7 and the righthand passage 9. At the same time a metering portion 27 of land 28 closes connection between by-pass 7 and the left-hand passage 9. Continued right-hand movement of left-hand land 28 connects feed passage 11 to a motor passage 12, 14 and fluid is exhausted by motor 3 through right-hand line 14, passage 12 to a return passage 15 leading to the tank 4. The spool-actuated switch 32 comprises a spring- biased plunger 52 having a head 54, which bridges a single contact 56 with one or other spaced pairs of contacts 48, 49 to energize a relay switch 57 in the motor circuit.
Patent GB-959754-A (GB)
Title: Improvements in or relating to presses
IPC: B21D43/02
Filed: 1962-11-29
Abstract: 959,754. Toothed gearing. SMERALOVY ZAVODY, NARODNI PODNIK. Nov. 29, 1962 [Dec. 5, 1961], No. 45109/62. Heading F2Q. Mechanism for moving a transport plate 1 along a circular are comprises parallel cranks 4 pivotally connected at spaced points 3 to the plate 1 and rotatable about parallel axes by pinions 7 meshing rack parts 8 which are spaced apart accurately by a spacing tube 11. The rack parts 8 are mounted on a common reciprocable rod and are located axially by a stop 10 and nut 12. On assembly, in order to ensure the parallel relationship of the two cranks 4, an end surface of the tube 11 may be ground until the tube is the required length. Alternatively, a spacer of suitable length may be selected from a plurality of spacers machined to different lengths.
Patent GB-1321950-A (GB)
Title: Male contraceptive devices
IPC: A61F6/04
Filed: 1971-09-28
Abstract: 1321950 Contraceptive device J CZIRELY 28 Sept 1971 [1 Oct 1970] 45125/71 Heading A5R A male contraceptive device 1 comprises an elongate, flexible and elastic receptacle 2 having an open end and a closed end, an adhesive layer (6), Figure 2 (not shown), carried by and extending around the open end of the receptacle, and a readily removable protective covering 8 disposed over the adhesive layer. Two sheets of the protective material 8 are provided with flaps 10 serving as fingerholds for use in separation of the sheets from said layer. Protection of the device during handling is afforded by annular handling pieces 11 on opposite sides of the receptacle which consist of horizontal portions 14 strippably attached to the exterior surface of the edge 4 by an adhesive layer (16), Figure 3 (not shown) and portions 12 which may be unfolded upwardly to protect the receptacle during handling and facilitate application of the device. The receptacle 2 which is used to collect the seminal fluid is attached to the end of a male sexual organ by means of the adhesive layer (6), thereafter the handling material being removed from the edge 4. The device itself may be removed after use by either mechanical separation or by the use of a solvent to accelerate penetration of the solvent, perforations 18 may be made in the edge 4. The interior of the receptacle may be coated with a spermicidal composition for increased contraceptive safety.
Patent GB-1396913-A (GB)
Title: Dichlorobutene isomerization
IPC: C07C67/00
Filed: 1972-09-29
Abstract: 1396913 Dichlorobutene isomerization E I DU PONT DE NEMOURS & CO 29 Sept 1972 [30 Nov 1971] 45130/72 Heading C2C Each of 1,4-dichlorobutene-2 and 3,4-diehlorobutene-1 is isomerized to the other by contact with a catalyst system comprising an organic quaternary ammonium chloride and cuprous chloride in a molar ratio of quaternary ammonium chloride to cuprous chloride (CuCl) of from 0À5 : 1 to 1À8 : 1, the said organic quaternary ammonium chloride having the formula, R n R<SP>1</SP> m NCl, wherein R is an aryl radical, a C 4-10  alkyl radical or a chlorine substituted buteny radical, and R<SP>1</SP> is a C 1-3  alkyl radical and wherein n + m = 4 and n is 0 or 1. Specified quaternary salts are butyltrimethylammonium chloride, benzyltrimethyl-ammonium chloride, 4-chloro-2-butenyl-trimethylammonium chloride, and 4-chloro-2-butenyltriethylammonium chloride, the two latter salts preferably being prepared in situ from the dichlorobutene and tertiary amine. The contacting, either batchwise or continuous, is preferably effected at 30-150 C. and 50-300 mm.Hg. using an amount of catalyst system equal to 0À1-30% by weight of the dichlorobutene. A comparative example (5) uses adiponitrile/ cuprous chloride as catalyst system.
Patent GB-1131635-A (GB)
Title: High temperature and high pressure apparatus
IPC: B01J3/06
Filed: 1965-10-28
Abstract: 1,131,635. Very high pressure apparatus. H. ISHIZUKA. 28 Oct., 1965 [4 Nov., 1964; 18 Feb., 1965; 4 May, 1965], No. 45614/65. Heading B1X. In a very high pressure, high temperature apparatus of the type in which opposed pistons (11, 11<SP>1</SP>) enter an annular die member (13); there are provided a hollow sleeve-like body (15) of low compressibility (defined) material (e.g. Al 2 O 3 , MgO, SiO 2 , TiO 2 , ThO 2 , or BeO) and gaskets (22, 22<SP>1</SP>), the arrangement being such that the end surfaces of the pistons, said hollow body and said gaskets together define a reaction chamber formed thereby. As shown in Fig. 1, to which the above numerals refer, a further body 16, of agalmatolite is present, which together with discs 19, 19<SP>1</SP> of black lead or graphite, contains the charge. Steel discs 20, 21<SP>1</SP> steel rings 18, 18<SP>1</SP> and aga- Imatolite discs 17, 17<SP>1</SP> complete the assembly. The gaskets may be of agalmatolite and may be sheathed in copper or iron foil. The gaskets may alternatively be made of steatite, P.T.F.E. ,or polyethylene. Figs. 2A and 2B (not shown) illustrate alternative forms of gasket and Fig. 3 (not shown) illustrates an apparatus having pistons with a double taper. Further materials of construction, and dimensions, are supplied, and it is stated that pressures and temperatures above 40,000 at. and 1200-1500‹C may be sustained in the production of diamond from a mixture of nickel, chromium carbide and graphite.
Patent GB-1511297-A (GB)
Title: Tensioning of hollow bolts or studs
IPC: B25B29/02
Filed: 1976-10-01
Abstract: 1511297 Applying predetermined tensions to bolts ENGLISH ELECTRIC CO Ltd 1 Oct 1976 [3 Nov 1975] 45640/75 Heading F2H In a method and apparatus for tensioning a hollow bolt 1 using a piston and cylinder unit 6 attached to one end of the bolt, a pump unit 13 supplying pressure fluid to the cylinder 14 to cause the piston 9 to urge a push-rod 7 extending through the bolt against a reaction surface at the other end of the bolt, the pushrod 7 and a load-spreading member 11 between the piston 9 and the push-rod 7 are of harder material than the bolt 1 and the piston 9, and a shim 20 of softer metal is interposed between the rod 7 and the load-spreading member 11. A second shim 24 may be interposed between the piston 9 and the load-spreading member 11. The rod 7 and member 11 may be of tungsten carbide steel, and the shim(s) of mild steel with a thickness between 0À0001 and 0À1 inch, preferably 0À008 inch. The apparatus is as described in Specification 1,511,298.
Patent GB-1402006-A (GB)
Title: Closures for bottles and like containers
IPC: B65D50/04
Filed: 1972-10-04
Abstract: 1402006 Tamper-proof closures METAL BOX CO Ltd 12 Sept 1973 [4 Oct 1972] 45819/72 Heading B8T In a tamper-proof container closure comprising inner and outer closure members 1, 2, the inner closure member 1 is held captive relative to the outer closure member by being gripped between the bottom wall 12 of a well formed in the crown 5 of the outer member 2 and an internal bead 13 on the skirt 6 of the outer member 2 engaging the open end of the closure member 1. Each member 1, 2, includes a crown and a depending skirt; the skirt 4 of the member 1 having longitudinally extending spaced splines or teeth 10 which are normally disengaged from longitudinally extending splines or teeth 11 formed internally on the skirt 6 of the outer member 2. In the disengaged condition the outer closure member 2 can rotate freely relative to the inner closure member 1 which is secured to the container by a screw thread engagement 7, 8. The crown 5 of the member 2 is flexible so that pressure on the portions 16 of the crown 5 causes axial movement of the member 2 to engage the splines or teeth 10 and 11. In this condition rotation of the outer member 2 also causes rotation of the inner member 1. When the pressure is released the members 1 and 2 return to the condition shown in Fig. 1, due to the pressure between the wall 12 and the crown 3. The thickness of the material of the crown at the bottom of the well and the side walls 15 thereof is greater than at the surrounding portions 16. In a preferred embodiment a sealing annulus 18 of claw-like cross-section is provided internally of the crown 3 of the member 1 to seal against the rim of the container. In a further embodiment, the skirt 6 of the member 2 is also provided with flexible internal splines which extend the full length of the skirt and alternate circumferentially with the splines 11. These flexible splines engage the splines or teeth 10 and act as a ratchet to assist rotation to screw the inner member 1 on to the container, but ride over the splines or teeth 10 during rotation in the opposite direction.
Patent GB-973579-A (GB)
Title: Improvements relating to sorting apparatus for card-like items
Inventor: BOCOCK WILLIAM ARTHUR
IPC: G06K13/04
Filed: 1961-12-21
Abstract: 973,579. Educational appliances. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Nov. 12, 1962 [Dec.21, 1961], No. 45859/61. Heading G5G. In a question and answer device in which cards 17 are presented at a viewing window 18, the cards rest on the top edge 13 of a guide 11 which can be pivoted about 12 in either direction A or B so the card is delivered either into a "right" or "wrong" packs 14, 16. The guide 11 and a coupled guide 15 are shaped so that both packs 14, 16 are behind the vertical of the screen 18 so that the area in front of the casing 23 is free for writing, the guide plate is pivoted by means of electromagnets 19, 20.