baber/WOPTO huggingface dataset:
Patent GB-956883-A (GB)
Title: Stabilized vinyl chloride monomer
IPC: C07C17/42
Filed: 1961-11-16
Abstract: The invention comprises a vinyl chloride composition which contains a phenolic compound, unsubstituted, or substituted by alkyl, alkoxy or amino groups, in an amount ranging from one-half to thirty parts per million by weight of the monomer.  The incorporation of the phenolic compound stabilizes the vinyl chloride against pre-polymerization. Many suitable phenolic compounds are specified.  The vinyl chloride monomer may be prepared, for example, by dehydrochlorination of 1, 2-dichloroethane or by hydrochlorination of acetylene, the phenolic compound generally being added after the last distillation step. Examples are given.ALSO:Vinyl chloride compositions, containing a phenolic compound as a stabiliser against pre-polymerisation, are polymerised by known processes.  In examples: (11) and (12) vinyl chloride containing, as stabiliser, phenol, p-cresol, p-amino-phenol, 3-hydroxypyridine, 2,4,6-tri-tert.butyl phenol, pentamethyl phenol, 2,4-di-(1, 1, 3, 3-tetramethylbutyl) phenol, or 2, 6-di-(2-hexyl) -4- (2-octadecyl) phenol is polymerised, the catalyst being a mixture of lauroyl peroxide and methyl cellulose in water; (13) vinyl chloride containing p-methoxy phenol is polymerised using a catalyst of potassium persulphate and sodium laurate.
Patent GB-1057817-A (GB)
Title: Semiconductor diodes and methods of making them
IPC: H01L29/20
Filed: 1963-10-17
Abstract: 1,057,817. Gallium arsenide diodes. WESTERN ELECTRIC CO. Inc. Oct. 17, 1963 [Oct. 23, 1962; May 13, 1963], No. 41009/63. Heading H1K. A silver layer of from ¢ to 1 mil. thickness is deposited on a limited area of a gallium arsenide wafer, or on a gold layer on the wafer, with a layer of gold applied over the silver layer. In one embodiment (Fig. 1) a slice 20 of lowresistivity N-type gallium arsenide has a thin high resistivity layer 22 epitaxially grown on its surface. Upon the layer 22 are deposited several contacts 24 by evaporation through a metal mask. These consist of gold, 24 and 26 and silver 25. A tin layer is alloyed to the other face of the wafer during this process. After masking the contact regions 24 with wax, etching of the wafer is effected and the slice is cut up ultrasonically into individual wafers, each with a button contact. Housing and encapsulation of the element with a spring contact 29 on the button completes the device. In a further embodiment, however (Fig. 2, not shown), the N- type wafer is provided with a thin P-type region of low conductivity produced by zinc diffusion, a silver button is evaporated on the wafer through a mask, and at a lower temperature a thin gold plating is provided over the silver. After ultrasonic cutting of the wafer into discrete elements, etching of the PN junction is effected to remove part of the P-type region. Finally after thermocompression bonding the lead wire to the silver button the device is encapsulated.
Patent GB-901061-A (GB)
Title: Improvements in or relating to safety valves
IPC: F16K17/10
Filed: 1959-12-02
Abstract: 901,061. Fluid-pressure servomotor-control systems. GESELLSCHAFT DER L. VON ROLL'SCHEN EISENWERKE A.G. Dec. 2, 1959 [Dec. 2, 1958; July 22, 1959], No. 41018/59. Class 135. A safety valve, which is operative with fluid flowing in either direction, is provided with a hollow closure member 11, Fig. 1, which controls the communication between the bores. Upon supplying highpressure fluid to the bore 35 the fluid flows via ports 8, restricted passage 33 and check-valve 31 into a chamber 22 where it acts on the outer annular face of closure member 11 and assist a spring 17 to urge the member 11 on to its seat 13. Should the fluid exceed a given value then an element 19 is displaced against an adjustable spring 20, since chamber 22 opens to the element 19 via a bore 21, whereupon fluid exhausts through passages 23 in the element 19, grooves 24 and a passage 26. The restricted passage 33 creates a pressure drop between the ports 8 and chamber 22, and the higher fluid pressure in the ports 8 acts on the surface b 2 -b 1  and unseats the member 11 to interconnect bores 35, 36. When the fluid pressure has reduced to its normal level and has been re-established in the chamber 22 the member 11 re-seats and the element 19 closes the bore 21. Upon connecting the bore 36 to the high-pressure supply, the fluid passes to chamber 21 via another check valve 32 and a restricted passage 34, the valve functioning as previously described. The loading of the spring 20 may be adjusted by a fluid-actuated piston instead of the screw 28 shown. In a modification, the outer end of the closure member 111, Fig. 2, is of reduced diameter and operates in the chamber 122 whilst element 119 is disposed on the outer side of the end cover 116 of the chamber 122. An adjustable throttle screw 134 is placed in the flow path to the chamber 122. The latter may have manually or an electromagnetically and manually operated valve connected thereto to additionally control the release of pressure-fluid therein.
Patent GB-931013-A (GB)
Title: Process for the polymerisation of lactams
Inventor: BUCKLEY GERARD DUNSTAN
IPC: C08G69/20
Filed: 1960-11-29
Abstract: In a process for the alkaline polymerization of at least one lactam having at least six carbon atoms in the ring wherein the lactam is maintained at a temperature above its melting point, a compound having the formula R(BA)n where n is an integer of from 3 to 6 inclusive, R is a multivalent hydrocarbon radical containing from 2 to 6 carbon atoms, which radical may contain one or more substituents which are inert in said polymerization reaction, B is a radical of formula <FORM:0931013/IV(a)/1> where X, Y and Z are oxygen, sulphur or the imino radical, and B may be different in each occurrence and A is a monovalent alkyl, aryl or aralkyl radical containing up to 6 carbon atoms, which radical may contain one or more substituents which are inert in said polymerization reaction, and A may be different in each occurrence, or a salt of said compound is added to said lactam, either as such or after being dissolved in a suitable solvent. Specified lactams are S -caprolactam, enantholactam, capryllactam, dodecanolactam, a -methyl-S -caprolactam, b :d -dimethyl-S -caprolactam and b -phenylS -cap-rolactam. Specified activators are glycerol triethylcarbonate hydroxyquinol trimethylcarbonate, pentaerythritol tetraethylcarbonate and hexa(N-phenylcarbamoyl) sorbitol.  Finely divided metals, glass fibres or metals may be present in the polymerization mixtures. In the examples, S -caprolactam is polymerized in the presence of sodium methoxide, methanol and:-(1) glycerol triethylcarbonate and (2) pentaerythritol tetraethylcarbonate.
Patent GB-1413257-A (GB)
Title: Ink jet printer
IPC: B41J2/115
Filed: 1973-08-31
Abstract: 1413257 Ink - drop printers INTERNATIONAL BUSINESS MACHINES CORP 31 Aug 1973 [25 Sept 1972] 41107/73 Heading G4H An ink-drop printer comprising means for generating three streams of charged inkdrops incorporates means for detecting failure in syncronization between drop charging and drop formation for each stream. For each stream (e.g. that produced by piezoelectric crystal 6 and charging electrode 10) some drops 33a are deflected to a gutter 18 to produce a current signal 37 whose level indicates the charge on the received drops. Each current signal passes through a switching circuit 40 to an operational amplifier 41 (Fig. 2, not shown). If a signal is below a threshold value then sync. correction is required, and this is accomplished by a control circuit 31 which adjusts the relative phase of operation of crystal 6 and electrode 10.
Patent GB-1020535-A (GB)
Title: Improvements in or relating to free machining steel
IPC: C22C38/60
Filed: 1962-10-31
Abstract: A non-stainless, free machining steel in the as-rolled condition comprises: .Pb.0.02-0.5% .Te.0.02-0.5% .Mn.at least 0.6% .C.up to 1.0% .Cr.up to less than 5.0% the balance, apart from other elements commonly present in non stainless steels, being iron.  Optional additives described are: .P.up to 0.07% .S.up to 0.5% .Si.0.01-0.3% .Ni.up to 0.2% .Cu.up to 0.2% .Sn.up to 0.08% .Mo.up to 0.05%
Patent GB-1486348-A (GB)
Title: Yarn spindle arrangements for spinning and doubling machines
IPC: D01H1/24
Filed: 1975-10-08
Abstract: 1486348 Supporting and driving a spindle; Winding arrangement with stop motion HAMEL GmbH ZWIRNMASCHINEN 8 Oct 1975 [7 Nov 1974] 41165/75 Headings D1D and D1J A spindle 22 is mounted on a swivel arm 18 which is pivoted about an axis parallel to the spindle. The swivel arm being movable to engage or disengage a whorle 24 on the spindle with a tangential drive belt 28, a telescopic thrust arm 52 being provided to hold the arm in the engaged position and a power device 70, 72 being provided to move the telescopic thrust arm over centre. The power device may be rotating or traction electromagnet, or a hydraulic or pneumatic piston/cylinder unit. The spindle is moved by a lever arm 58 which carries rollers 42, 42' engaging a guide surface in a fixed ring member 12. A spring 26 presses whorle 24 into contact with drive belt 28. Movement of the swivel arm may be initiated by a stop motion, either a tension sensor 94 or a full package sensor 92, Fig. 4. Additionally tension sensor 94 operates a separating plate 97 which is inserted between a winding package 82 and its friction drive roller 88. This is also operated by the full package sensor 92 together with a yarn cutter 100.
Patent GB-998750-A (GB)
Title: Container and electrical heater means
IPC: H05B3/44
Filed: 1963-10-18
Abstract: 998,750. Seaming; jointing. A. R. WELLS, and R. M. WELLS. Oct. 18, 1963 [Oct. 25, 1962; Sept. 17, 1963], No. 41197/63. Headings B3J and B3Q. [Also in Division H5] In an electrically - heated coffee percolator or similar liquid container a thermoplastic body is attached to a metallic bottom by the formation on the edge of the metal of a socket into which the edge of the plastic is secured. As shown in Fig. 2, the bottom 8a, e.g. of stainless steel or aluminium, provides an annular seal and sealing cement or a glass fibre gasket 11a is used; a metal washer 23 has an upturned flange 24 to relieve stress on the plastic. The vessel has an additional base attached, e.g. by a screwed stud. Variations of this arrangement are illustrated in Figs. 1, 3, 5 and 6 (not shown). In Fig. 4 (not shown), a similar joint is formed in the wall of the vessel, the plastic being straight sided and the bottom curved up to meet it. In Fig. 7 the joint is sealed by deforming the metal at 110# into the plastic. It is stated that if any of the joints accidentally overheat the plastic may soften, but the liquid seal be re-established after cooling.
Patent GB-1299499-A (GB)
Title: Endless loop tape cartridge
IPC: G11B23/06
Filed: 1970-08-28
Abstract: 1299499 Recording and playback RCA CORPORATION 28 Aug 1970 [3 Sept 1969] 41426/70 Heading G5R An endless loop tape cartridge includes a system whereby the tape is driven at a speed which is different from the peripheral speed of the drive capstan. In the arrangement shown, a friction wheel 30 within the cartridge is driven by the machine capstan 28, and a cartridge capstan 62, which is secured to and rotates with the friction wheel 30, co-operates with a pressure roller 64 to drive the tape 22 at half normal speed.
Patent GB-1437027-A (GB)
Title: Drag scraper
IPC: E02F3/54
Filed: 1973-09-04
Abstract: 1437027 Drag line scrapers BRITISH ROPEWAY ENG CO Ltd 18 Oct 1974 [4 Sept 1973] 41472/73 Heading E1F A drag scraper comprises a bucket 1, at least two in-haul ropes 2 and at least two out-haul ropes 3 of which ropes at least one of the in-haul ropes and at least one of the out-haul is attached to each side of the bucket, and means for coiling in and paying out said ropes. Preferably there are provided a pair of in haul ropes and a pair of out haul ropes and each pair of said ropes are associated with a single or split barrel winch drum on which the ropes of that pair are coiled. The bucket may be such as to permit of adjustment of the width thereof.
Patent GB-1487848-A (GB)
Title: Apparatus for the continuous manufacture of foamed plastics blocks
IPC: B29C44/28
Filed: 1974-09-24
Abstract: 1487848 Continuous foam casting PLANIBLOCK SA 24 Sept 1974 [20 Feb 1974 26 April 1974 27 May 1974] 41563/74 Heading B5A In order to overcome crowning and provide a rectangular cross-section for foam blocks of different widths, a series of floating members, i.e. rollers 7 or runners (8, Figs. 15, 18) are arranged in the foaming area 6 so that between them they can act across the entire transverse width of foam blocks of different widths to prevent the foam doming and to displace excess foam to the upper corners 36 of the block. The foam is formed within a casing 4, 24 the upper layer 24 being fed from a device 25 and joined to the foam by an adjustable heater 32 and plates 22 and to the remainder of the casing 4 by an adhesive or tape applied by a device 37. The rollers or runners are carried by arms 10 which may be pivoted to an adjustable carrier 9 or carried by a frame (Fig. 12, 14, 15, 17) via cable (14) passing over pulleys (15) and provided with counterbalancing weights (16). To accommodate different widths the members may be staggered in the longitudinal direction of the belt (Fig. 9,) may be provided with an auxiliary member, e.g. rollers 19 in Fig. 10, not shown, may be telescopic, or may be arranged in groups, each group comprising a series of members of different widths so that the appropriate one may be lowered (see Figs. 13, 14, 16, 17, not shown). One of the side walls 3 of the mould may be adjustable. The upper covering layer 24 may be transparent and is pricked by a spiked roller 27, plate (33, Fig. 5) or endless belt (34, Fig. 6) to allow excess foaming agent to escape. The foam may be polyurethane.
Patent GB-1427269-A (GB)
Title: Welding nozzle for blowing hot gas
IPC: B23K1/012
Filed: 1974-09-25
Abstract: 1427269 Tubular resistance heater COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS CIT-ALCATEL 25 Sept 1974 [17 July 1974] 41730/74 Heading H5H [Also in Division F4]  A hot gas (e.g. argon, nitrogen) welding nozzle for micro-circuits comprises an electrically conductive stainless steel duct for the gas supply arranged within a copper outer tube 1 the space between being filled with a thermal and electrical insulant 6 such as talc or magnesia. A conical copper head 3 is welded to the outer tube and the inner duct. An electric current is passed through the duct 2 to heat it and hence the welding gas. A thermocouple 9 is provided to regulate the temperature of the nozzle.
Patent GB-1113665-A (GB)
Title: Leaky waveguide aerials
IPC: G01S13/931
Filed: 1965-04-22
Abstract: 1,113,665. Aerials. HITACHI SEISAKUSHO KABUSHIKI KAISHA. 22 April, 1965 [30 April, 1964 (2); 24 June, 1964; 29 June, 1964], No. 41895/66. Divided out of 1,113,664. Heading H4A. In a waveguide aerial having an axial slot or series of slots in its wall to produce leaky waves which emerge at an angle of less than 45 degrees to the axial direction, plates are regularly spaced and associated with the slot(s) and are at a constant orientation relative to the aerial axis. In one form the arrangement consists of a layer of plastic formed around a helical conductor of wide pitch, a longitudinally slotted conductive layer around the plastic layer, and V-plates protruding from the vicinity of the slot. Alternately-orthogonal slots may be employed. To reduce side-lobes, e.g. in a railway obstacle detection system, a wave-concentrating projector is provided on the leaky waveguide in the vicinity of its slot(s) together with wave deflectors at intervals at the outlet of the projector; the deflectors may be flat and parallel plates within the projector and fully across it. In further embodiments the deflectors are staggered and not fully across the projector. The deflectors may be curved to act additionally as wave concentrators.
Patent GB-1032673-A (GB)
Title: Tooth brush & tooth paste dispenser assembly
IPC: A46B11/00
Filed: 1963-10-24
Abstract: 1,032,673. Reservoir toothbrushes. J. T. D. HUTTON. Oct. 14, 1964 [Oct. 24, 1963], No. 41927/63. Heading A4K. In a screwable piston dentifrice dispensing arrangement, in the handle of a toothbrush, the e screwthreaded piston displacing rod 5 has an integral drive knob 4, which is a snap fit in the end of the cylindrical dentifrice container. Diametrically opposed notches in the edges of piston 4 engage longitudinally extruding ribs on the inner face of the container, to prevent relative rotation.
Patent GB-1483625-A (GB)
Title: Wet vacuum cleaner
IPC: A47L11/30
Filed: 1974-09-26
Abstract: 1483625 Suction cleaners PUREX CORP 26 Sept 1974 [23 Oct 1973] 41935/74 Heading A4F A suction cleaner comprises a rigid walled suction chamber 12 to which suction is applied by a suction generator 56_disposed above it to draw dirty liquid or dust via a suction hose 34 respectively, into a flexible container 64 disposed within the chamber 12, an assembly comprising a wall 58 and a perforated baffle plate 66 being arranged between the flexible container and the air inlet filter 60 of the suction generator to hold the container in position and to prevent liquid passing into the suction generator. The illustrated machine is for cleaning a carpet by applying cleaning liquid thereto and withdrawing the used liquid by suction, and comprises a handpiece carrying a suction nozzle (37), Fig. 2 (not shown), connected to the hose 34, and a spray nozzle (39) to which clean liquid is pumped from the chamber 12 by a pump 48 having an inlet pipe 52. A valve (40) on the handpiece controls the liquid supply to the nozzle (39) and when it is closed liquid is continuously returned by the pump 48 to the chamber 12 via a fluid-pressure actuated valve 55 and a pipe 54. The liquid and suction pipes pass through the,handpiece where they are surrounded by heat insulating foam plastics material.
Patent GB-1403778-A (GB)
Title: Electrical drive transmission
IPC: B60L50/15
Filed: 1972-09-08
Abstract: 1403778 Control of A.C. and D.C. motors; mechanical power transmission systems KAWASAKI JUKOGYO KK 8 Sept 1972 [15 Sept 1971] 41946/72 Headings H2J and H2H A motor 9 for a vehicle drive wheel 10 is supplied with electric power from a battery 7 and a generator 2, which is driven by a machine 1, an inductor 5 being provided between the battery and the motor to prevent high frequency current from charging the battery, and a rectifier 6 being connected in parallel with the inductor and passing current only in the direction of battery discharge. Thus battery 7 is protected from unnecessary charge and discharge, high frequency energy being stored in a capacitor 4 which can be used to supply motor 9. A chopper 8 comprising controlled rectifiers controls the power supply to the motor. In the embodiment of Fig. 1, battery 7 and an A.C. generator 2, which is connected to a converter 3, supply a D.C. motor 9. A second embodiment, Fig. 2, has a wound rotor induction motor 9, the secondary winding of which is connected to the A.C. terminals of an inverter 11 whose D.C. terminals are supplied as in the first embodiment. The primary winding of motor 9 is supplied directly from the A.C. generator 2. In the embodiment of Fig. 3, the generator 2 is constituted by an electromagnetic coupling (Fig. 4, not shown) as disclosed in Specification 1,381,193. The coupling has two rotors 12, 13 one of which is common with the rotor of a D.C. motor 9 and the other of which is driven by a machine 1. Motor 9 has a series winding 17 and a shunt winding 16; a controller 23 for winding 16 and a controller 24 for chopper 8 are actuated by a pedal 25. One of the rotors 12, 13 is provided with a field winding supplied from a source 21 via controlled rectifier 22, and the other rotor has an armature winding connected to the converter 3. In a final embodiment (Fig. 5, not shown) a D.C. motor 9 is driven by a battery 7 and a D.C. generator 2.
Patent GB-1437446-A (GB)
Title: Machine for positioning and dispensing railroad sleepers
IPC: E01B29/06
Filed: 1973-09-06
Abstract: 1437446 Endless conveyers MORRISONKNUDSEN CO Inc 6 Sept 1973 [21 Dec 1972] 41976/73 Heading B8A [Also in Division E1] Apparatus for laying railroad sleepers in spaced relation on a roadbed along a line parallel to a roadside reference wire or line 120, Fig. 4, comprises a wheeled machine 2 incorporating a transversely-shiftable sleeper-laying carriage 40 which (a) is moved to a central position; (b) takes a single sleeper from a conveyer 22 on the machine; (c) moves laterally (if required) to an alignment position determined by a sensor 121 engaging the reference wire 120; and (d) drops the sleeper at the required spacing. The machine is power-steered, the conveyer 22 and road wheels 17 are driven by hydraulic motors, and the various shifting movements are effected generally automatically by hydraulic cylinders, solenoid valves and limit switches under overall manual control from a panel 16. The sleeper laying carriage 40 (references 41 ... 44, Fig. 5) is mounted for movement across a machine frame 13 at the lower end of conveyer 22 by upper roller pairs 48 and lower rollers 50, and is shifted by cylinders 53, 54 controlled by valves, time delays and limit switches (Figs. 8, 9, not shown) so that the carriage is alternately (a) centred, ready to receive a fresh sleeper from the conveyer 22 as soon as the preceding sleeper has been laid, and (b) aligned in relation to the wire 120 by followup mechanism. The follow-up mechanism, Figs. 6, 1A (not shown), comprises limit switches (70, 71) actuated by plates depending from a transverse bar (63) which carries a pendulum sensor switch (122) controlled by the wire (120) and is shifted by a cylinder (66). The chain conveyer 22 shown can be pivotally raised and lowered to take sleepers selectively from upper and lower conveyers on a storage vehicle, pushed ahead of the machine, the conveyers being operated intermittently as laying proceeds. Arms 81 overlying the lower end of the conveyer 22 have depending sleeperretaining projections 83, Fig. 4, so that the sleepers can be released one at a time by raising and rapidly lowering the arms 81. The released sleeper moves on to a roller conveyer 88 of the centralized carriage 40 and free-falls thereon over braking spring-loaded skids 92 until retained by end dogs 91 on the skids. The carriage 40 is then laterally shifted to the aligned position, by the follow-up mechanism 120- 63-66-70-71-53-54 and the sleeper is centred on the carriage by depending pivotal plates 96 linked to a central cylinder 101. Thereafter the skids 92 are lowered slightly (by cylinder 105, rock shaft 104 and hooks 103) so that the sleeper falls into end-holding pivotal scoops 108. Finally, at a moment determined, Fig. 2 (not shown), by a limit switch (114) controlled by a retractable wheel (117) bearing on a road wheel 17, the scoops 108 are opened to drop the aligned sleeper on to the roadbed at the required spacing.