baber/WOPTO huggingface dataset:
Patent GB-550787-A (GB)
Abstract: 550,787. Coating yarns &c. GREENWOOD DYEING CO., Ltd., and WHITE, W. Oct. 2, 1941, No. 12728. Drawings to Specification. [Class 140] In a melange printing apparatus of the kind wherein the tops or sliver are fed over but not in contact with a roller carrying dye while a reciprocal dabbing shoe intermittently presses the sliver on to the roller, and consists in providing the dabbing shoe with a plurality of pressing portions spaced along the direction of travel of the sliver, so that the speed of feed may be increased.
Patent GB-1154413-A (GB)
Title: Solid State Switching Circuit for Movable Magnetic Heads
IPC: G11B15/14
Filed: 1966-12-08
Abstract: 1,154,413. Head switching. RADIO CORPORATION OF AMERICA. 8 Dec., 1966 [20 Dec., 1965], No. 55104/66. Heading G5R. A recording and playback arrangement with one or more rotating transducing heads comprises semi-conductor switching means and preamplifiers mounted on the rotary member for amplifying the played-back signal before application to the slip rings coupling the member to the fixed part of the apparatus. With switch 23 connected to battery 25 in play-back mode a positive potential is applied via slip ring 22 and diodes 30 to energize the preamplifiers 7, 8 and also to bias the diodes 9, 10 to conduction whereby played-back signals from the heads 1, 2 can be pre-amplified and applied via slip rings 12, 13 to the play-back amplifiers 14, 15. The oppositely poled diode assemblies 40, 41 and 44, 45 require a forward bias to conduct which is greater in amplitude than the played-back signal hence this signal is not passed via slip ring 42 to the record amplifier. In the record made, switch 23 is connected to battery 27 and the negative potential applied cuts off the diodes 9, 10, 30 hence the preamplifiers receive neither energizing power nor input signal and the recording signal is applied via slip ring 42 and diode assemblies 40, 41 and 44, 45 to the heads 1, 2.
Patent GB-1482170-A (GB)
Title: Oxidative hair dye compositions containing n-substituted o-phenylenediamines and method for their use
IPC: A61K8/00
Filed: 1974-12-31
Abstract: 1482170 Oxidation dyes for dyeing keratin BRISTOL-MYERS CO 31 Dec 1974 [2 Jan 1974] 56116/74 Heading D1B [Also in Division C2] Keratinous fibres are dyed with oxidation dyes containing a tinctorially effective amount of an o-phenylenediamine compound of formula  in which R is an alkyl group having 1 to 4 carbon atoms, a hydroxyalkyl group having 2 to 4 carbon atoms and 1 to 3 hydroxy groups, an alkoxyalkyl group in which the alkyl moieties have 1 to 4 carbon atoms, an alkylaminoalkyl group in which the alkyl moieties have 1 to 4 carbon atoms, a dialkylaminoalkyl group in which the alkyl moieties have 1 to 4 carbon atoms, a phenyl group, a hydroxyphenyl group, an aminophenyl group, an alkyl (C 1  to C 4 ) aminophenyl group a dialkyl (C 1  to C 4  each alkyl) aminophenyl group, a carboxyphenyl group, a carbamoylphenyl group or a sulfamoylphenyl group, preferably in concentrations of 0.02% to 5% by weight. The dyes may be applied to the keratin in presence of hydrogen peroxide followed by washing. The compositions may further comprise p-toluenediamine and resorcinol or 2-nitro-p-phenylenediamine. Preferred values of R are methyl, 2-hydroxyethyl, and phenyl. Redorange shades are obtained in hair by shampoo-in or combing or aerosol dyeing methods.
Patent GB-1453190-A (GB)
Title: Method of securing inserts into plastics bodies
IPC: B29C65/42
Filed: 1972-12-11
Abstract: 1453190 Pipe and rod couplings CRAWLEY MOULDINGS Ltd 11 Dec 1973 [11 Dec 1972] 56969/72 Heading F2G In a method primarily for interconnecting a tubular metal insert 2 with a plastic body 1, the insert is retained by uniting a plastics retaining ring 3 with the body 1, so that the end of the ring abuts a shoulder 14 on the insert. An internally screwthreaded brass, bronze or ferrous metal insert may have a ridge (11) which is pressed into sealing engagement with an acetal resin body 1, while the ring 3 is ultrasonically welded or adhesively bonded in position. Ridge (11) may be replaced by an 0-ring. The body 1 may be the bowl of air filter or mist lubricator for a compressed air line or a valve body.
Patent GB-1143330-A (GB)
Title: Compositions comprising tetracycline antibiotics
Inventor: WAHLIG HELMUT
IPC: A61K31/65
Filed: 1967-12-20
Abstract: 1,143,330. Tetracydine compositions. E. MERCK A.G. 20 Dec., 1967 [24 Dec., 1966], No. 57762/67. Heading A5B. Pharmaceutical compositions comprise a tetracycline antibiotic, sarcosine and/or sarcosine anhydride and a physiologically acceptable amine, carboxylic acid amide and/or an alkaline earth metal glycerophosphate. The compositions are stated to be of improved stability in aqueous solution over a considerable pH range and may be put up in conventional forms for oral, parenteral and rectal administration including dry and freeze-dried preparations for the extemporaneous preparation of injection solutions. A wide range of acyclic and heterocyclic amines and amides are specified. Those preferred being aminocarboxylic acid amides (optionally N-substituted) such as #-amino propionic acid amide, aminoacetamide, diethylamino-N-(2-hydroxyethyl acetamide), pyrrolidino-N-hydroxymethyl acetamide, N-2(-hydroxyethy]-γ-morpholino butyric acid amide and methionine amide. An alkaline earth metal salt, especially of Ca or Mg, may also be present.
Patent GB-1235343-A (GB)
Title: Separator for separating the vapour of a sublimable material from a vapour-gas mixture containing it and method of using the separator
IPC: C07C51/573
Filed: 1968-12-06
Abstract: 1,235,343. Condensation of vapours of sublimable materials. GELSENBERG BENZIN A.G. 6 Dec., 1968 [9 Dec., 1967], No. 58105/ 68. Heading B1B. [Also in Division F4] The vapour of a sublimable material, e.g. pyromellitic anhydride, is separated from a vapour-gas mixture by condensation of the vapour of the sublimable material directly to the solid state, by passing the vapour-gas mixture through inlet 5 into the bottom of a housing 12 which contains a looped member consisting of finned tubes, lying in the same plane, through which coolant is passed, the tubes being disposed so that the spacing h between successive tubes increases in the direction of the gas outlet 6 at the top of the housing. The housing is provided with a double jacket 13, and with temperature-measuring points 7. The vapour of the sublimed material condenses in the solid state on the tubes. The temperature of the coolant is lowered and/or its rate of flow is increased as the solid condensate builds up, whereby the temperature of the surface of the solid condensate, in contact with the gas stream, is maintained constant. The housing may contain more than one looped heat-exchange member. In place of parallel tubes as shown, the tubes may be arranged in zig-zag manner, or the housing may contain one or more helical coils. An apparatus is also described which comprises four heat-exchange members parallel heat-exchange tubes arranged at equal intervals between the gas-inlet and the gasoutlet. The coolant is passed through one heat-exchange member until the layer of solid condensate thereon is so thick that heat-exchange is no longer economic, whereupon the next heat-exchange member is brought into operation.
Patent GB-1450380-A (GB)
Title: Production of fluid flow control spool valves
IPC: F16K27/04
Filed: 1972-06-15
Abstract: 1450380 Making valves A E LAWS 14 Sept 1973 [15 June 1972] 58186/71 Headings B3A and B3D [Also in Division F2] In the manufacture of a spool valve comprising a slidable spool 17 and a ported sleeve 21 having a uniform internal diameter each component is formed from separate individual elements and at least one pair of elements, comprising one element from one component and a co-operating element from the other component, is machined simultaneously to produce equality of dimension. In the manufacture of a valve comprising a spool 17 having lands 19, 20 mounted on a spindle 18 and a sleeve 21 formed from rings 23, 25 cemented into a valve body 22, spool elements 19 and sleeve elements 24 are mounted in a circular plate 27, Fig. 7, or bundled together with wire (31) (Fig. 8, not shown) and located on a magnetic table 29. Both end surfaces of the elements are machined in turn using a grinding wheel 30 to produce spool lands 19 and sleeve elements 24 of equal length. Sleeve rings 25 and spool land separators 32, Fig. 10, and sleeve rings 23 and spool lands 20 are machined in a similar manner. The machined spool lands 19, 20 and spool land spacers 32 are assembled on a spindle 18 in a jig, Fig. 10 and the spool elements cemented together, after which the spacers 32 are removed. The sleeve rings 23-25 are clamped between locking rings 26 or by a jig during the cementing operation. A controlled mis-match of dimensions may be produced by forming a finite thickness of cement between the elements or by etching the elements after machining.
Patent GB-1329671-A (GB)
Title: Tape position sensor optical
IPC: H04B10/12
Filed: 1971-12-16
Abstract: 1329671 Tape position sensing KOLLSMAN INSTRUMENT CORP 16 Dec 1971 [21 Jan 1971] 58496/71 Heading G4H A multiple display arrangement comprises a plurality of tapes, each having a visual display on one side and a lengthwise, light selective coded pattern thereon, photoelectric means for producing digital signals from the coded pattern to indicate the position of the tape and means for comparing this position signal with an input, desired position signal and using the difference signal to move the tape to the desired position. As shown, four (infra-red) light emitting diodes 28 are arranged to illuminate an area from which glass fibres convey light equallly to each of the ten channels of the transmitter 12. The power supply to the diodes is pulsed. Receiver 13 picks up the transmitted signals after passing through the tape and conveys them to photodetector units 14 and a register 18. Alternately the detector may pick up a signal reflected from the tape. The required inputs are fed into input registers (15-1 to 15-4). These inputs are selected on a time sharing basis synchronized by pulse generator 16 and fed to subtractor 19 where they are compared with the tape position output stored in register 18. The error signal is switched at 21 to the error register 22 of the correct display unit, is converted to an analogue signal at 25 and drives tape drive motor 25 to move tape T and remove the position error. The error register holds a signal during the whole of the cycle so that the motors 25 can operate even when their channel is not being sampled.
Patent GB-1254365-A (GB)
Title: Method of dividing a semiconductor wafer
IPC: H01L21/304
Filed: 1969-12-01
Abstract: 1,254,365. Semi - conductor devices. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 1 Dec., 1969 [2 Dec., 1968], No. 58524/69. Heading H1K. A semi-conductor wafer 1 provided on one surface with conducting beam leads 4 connected to electrodes of semi-conductor components in that surface is divided by cutting channels 7 partially through the wafer from its opposite surface and then etching without the use of a mask to separate the various components. The sawing may be carried out using a diamond or wire gang saw, and the non-selective etchant may, for a Si wafer, be a spray of HF, HCl and/or HNO 3 . The beam leads 4 may comprise layers of Ti, Pt and Au, the Au layer being relatively thick and applied by electrodeposition. The semi-conductor components may be individual planar transistors or may remain interconnected by the beam leads 4.
Patent GB-1254570-A (GB)
Title: Improvements in or relating to high-speed printers
IPC: B41J9/12
Filed: 1968-12-10
Abstract: 1,254,570. Selective printing. HONEYWELL Inc. 10 Dec., 1968 [2 Jan., 1968], No. 58733/68. Heading B6F. Print hammer arrangements.-A high-speed printer includes an array of print hammer assemblies each comprising a hammer actuator H12 and two or more print slugs t1, t2 mounted at letter-space distances along a printing line. The actuator is shared by both the print slugs t1, t2 but only one of the latter is effective to effect print impression by momentum. In the embodiment described with reference to Fig. 3, a control shaft CS is rotated in synchronism with a print cylinder PR so that in alternate cycles cams C1, C2 slide the print slugs t1, t2 into inactive and active positions respectively relative to the hammer H12. As shown in Fig. 4, print slugs S1, S2 are made active and non-active respectively by a slide SB<1> with recesses n1, n2, one recess for each group of slugs and for each hammer A12, A34. In the embodiment shown in Fig. 5, both print slugs HH1, HH2 are actuated, but one is rendered abortive because its flight is arrested by a tooth ft1 on a sliding bar SB<11> and the other slug passes through a slot to effect impression. In the next cycle the teeth and slots are interchanged by a sliding action of the bar SB<11>. Other embodiments are described in which the print slugs are moved sideways or tilted out of the path of the hammer actuators. The print cylinder may be replaced by endless chains of type or endless tracks each arranged perpendicular to the line of print.
Patent GB-1331069-A (GB)
Title: On-off controlled oil temperature adjusting apparatus with a protective device
IPC: H02H7/08
Filed: 1970-12-10
Abstract: 1331069 Automatic control of temperature KANTO SEIKI KK 10 Dec 1970 [16 Dec 1969] 58764/70 Heading G3R  In an arrangement for automatically controlling the temperature of oil (e.g. used as a lubricant, coolant, or as hydraulic circuit fluid in a machine tool), the oil is cooled by a refrigeration apparatus having a motor driven compressor controlled by the temperature deviation dependent output of a bridge circuit, relay circuits being provided to introduce time delay to prevent excessive motor starting current which could occur if the motor is started before the high and low pressure sides of a freon gas circuit are balanced. The ambient room temperature as sensed by a thermistor 2 is used as a reference and any deviation therefrom of the oil temperature which is sensed by a thermistor 1, produces an output voltage from the bridge. When this output is lower than a pre-determined value X current flowing through a relay 4 decreases and the relay is eventually de-energized closing a contact pair 6 and opening contact pairs 7, 9. With 9 open a relay 15 cuts-off supply to the refrigerator compressor motor 10. At the instant 6 closes and 7 opens, a transistor 14 is rendered conductive energizing a relay 3. The contact pair 5 of relay 3 thus open and remain open until a capacitor 8 becomes fully charged at which time transistor 14 is cut-off de-energizing relay 3. Thus the relay 4 and hence the motor 10 cannot be energized, even if the temperature difference is above a predetermined value Y and the bridge output voltage is high enough to effect operation of the relay 4, until C8 is fully charged. This time delay is predetermined by selection of the value of capacitor C and is sufficient to ensure that the high and low pressures are balanced so that the motor starting current will be minimum.
Patent GB-1293688-A (GB)
Title: Isodensity recording system
IPC: G01N21/17
Filed: 1970-12-11
Abstract: 1293688 Facsimile systems KONISHIROKU PHOTO INDUSTRY CO Ltd 11 Dec 1970 [24 Dec 1969] 59118/70 Heading H4F In a system for recording isodensity curves in which a density pattern is scanned and the output signal is applied to a discriminator for predetermined voltages, an alternating voltage having a peak-to-peak amplitude greater than the width of the dead zone (hysteresis) of the discriminator circuit is added to the output of the scanning system. As shown, Fig. 1, a film 2 containing a density image is scanned by a light source 1a and a light receiver 1b the output of which is applied to a voltage discriminator 3 which produces an output pulse whenever the input voltage passes one of a plurality of preselected threshold levels. The output pulses are applied to a spark discharge recorder 4, the stylus 5 of which is moved in synchronism with pick-up 1 to produce an isodensity recording. A generator 7 produces an alternating voltage, which may have a square, sine, sawtooth or pulse waveform, which is added to the video signal. This ensures that when the video signal lies within the dead zone surrounding one of the threshold voltage levels of the discriminator a series of output pulses are produced to fill the gap which would otherwise be formed in the isodensity curve. The pick-up 1 may utilize reflection of light from an opaque picture. If the amplitude of the alternating voltage is several times the width of the dead zone, isodensity curves are produced having a thickness inversely proportional to the density gradient.
Patent GB-1378869-A (GB)
Title: Countersinker assembly
IPC: B23B51/10
Filed: 1971-12-23
Abstract: 1378869 Countersinkers A KNUTSSON 23 Dec 1971 [29 Dec 1970] 59872/71 Heading B3C A countersinker assembly for attachment to a spiral fluted drill comprises a holding device 3 having an axial bore to accommodate the drill 1 and which is divided longitudinally into two halves, the ends of the holding device being conically formed, a countersinker 4 having cutting edges 6 and an internal conical surface to fit one end of the holding device 3, and a collar 2 internally conically formed to fit on the other end of the holding device, the countersinker 4 and the collar 2 having co-operating screw-threads enabling them to be screwed together to urge the holding device into gripping engagement with the drill. The holding device halves include swarf excluding elements 5 which are flexible to allow riding out of the drill flutes when relative rotation occurs through slipping between the countersinker assembly and the drill. The cutting edges 6 include an edge 10 extending into the drill flutes to prevent relative slip.
Patent GB-1383669-A (GB)
Title: Control circuits for tape recorders
IPC: H02P7/03
Filed: 1972-12-29
Abstract: 1383669 Control of D.C. motors GRUNDIG EMV-ELEKTRO-MECHANISCHE VERSUCHSANSTALT MAX GRUNDIG 29 Dec 1972 [31 Dec 1971] 60220/72 Heading H2J In dictating apparatus a D.C. motor 3 is controlled by a circuit comprising two complementary transistors 1, 2 to provide forward and reverse operation, a third transistor 7 being connected with transistor 2 to form a monostable circuit providing a predetermined short period of reverse operation. Switch 4 controls the normal forward and reverse operation of the motor and when switch 10 is operated connecting the positive supply to the motor, a positive pulse is applied to the base of transistor 2 turning it on and causing a negative pulse to be generated which switches off transistor 7 for a period determined by discharge of capacitor 12 through resistors 13, 14, the duration being variable by resistor 13. Forward operation is then restored by reversal of, switch 10, which action can be effected before capacitor 12 is discharged to arbitrarily shorten the period of reverse operation. The speed of the motor may be stabilized during record or playback operation by a device 15 responsive to the potential across a resistor 17, the device being blocked during fast forward operation by a switch (not shown) which also blocks actuation of the switch 10. The circuit shown can control the armature or field of a wound field motor or, as shown, the armature of a permanent magnet motor.
Patent GB-1333778-A (GB)
Title: Vapour growth device
IPC: C30B25/14
Filed: 1970-12-22
Abstract: 1333778 Silicon KOKUSAI DENKI KK 22 Dec 1970 [29 Dec 1969] 60790/70 Heading C1A A device for the vapour growing of semiconductor crystals, e.g. of silicon on a plurality of semi-conductor wafers 3 comprises a main chamber 1 having an exhaust hole 7, the disc 4 supported in the chamber to carry said wafers 3, means 5 for heating the disc 4, a motor 10 for rotating the disc 4, a nozzle 8 inserted in the chamber 1 having a head 2 with holes 2c arranged so that the reaction gases introduced through the nozzle are directed parallel to the disc, a nozzle cover 2a having a flat part parallel to the disc and a cylindrical part depending on the edges thereof, there being a gap C between the disc 4 and the cylindrical part of the nozzle cover 2a to allow gases to escape whereby the reaction gas injected through the nozzle 2 escapes through gap C to exhaust hole 7 and provides a gas curtain along the gap to prevent an ingress of contaminants. The nozzle may be exchangeable in order to adjust the distance between the disc and the flat part of the nozzle cover and/or to adjust the flow rate of the reaction gas.
Patent GB-2027129-A (GB)
Title: Submerged Pressure Operated Hydraulic Ram
IPC: F04F7/02
Filed: 1978-07-20
Abstract: The hydraulic ram pump is self operating. It can be started by pushing the piston 1 down by means of a rod fitted through the air vessel 2 in air- tight glands and reaching up beyond surface level. The water so displaced by the piston would escape through a valve in the drive pipe or through the delivery pipe valve. The longer the drive pipe is, then the longer the column of water available for "ramming". Full use is made of the natural incompressibility of water. The bore of the delivery pipe should be at least half of that of the drive pipe. The use of flexible piping may be considered, provided no plastic, rubber or soft metal inserts are used, to facilitate optional positioning of pipe direction. The upper piston stop 2 takes full ram shock. <IMAGE>
Patent GB-2002878-A (GB)
Title: Flap shutter arrangement
IPC: F16K1/24
Filed: 1978-08-03
Abstract: A flap shutter arrangement for pipes comprising a generally cylindrical housing 1, a swingable flap 2 mounted within the housing for movement between a closed position in which the periphery 6 of the flap forms a seal with a seating 7 of the housing which lies in a plane E, which is at right angles to the longitudinal axis G of the housing, and an open position in which the flap lies in a plane disposed at up to 90 DEG  to the plane E, the movement including an initial lifting movement of the flap away from the sealing surface of the seating 7, and linear drive means 5 pivoted to an actuator member 3 which is pivoted at an intermediate position. 10 min  fixed relative to the housing and located within the housing, the other end of the actuator member beyond the pivot being pivotally or rigidly connected to the flap. <IMAGE>
Patent GB-2004137-A (GB)
Title: Apparatus for supplying electric welding current
IPC: H02M1/40
Filed: 1978-09-07
Abstract: Apparatus for supplying welding current in which a supply input is rectified, smoothed and fed alternatively to transformer primary windings by switching transistors operating in Class D push-pull mode. The frequency of switching is at least 15 kHz. Saturation of the transformer core is prevented by equalisation of the collector currents of the transistors using a feedback loop control circuit. The apparatus may be in the form of a module connected in a network with other similar modules each delivering a constant current. A module or modules provides start-up current at a higher voltage. Another module or group of modules provides a higher running current at lower voltage. The apparatus is especially though not exclusively applicable to TIG welding, the aim being a high degree of control of the welding current. <IMAGE>
Patent GB-2008865-A (GB)
Title: Cord grip
IPC: H01R13/58
Filed: 1978-11-01
Abstract: A cord grip for electrical accessories, particularly lampholders, comprises a fixed clamping jaw 10 mounted on a support 12 and a movable clamping jaw 20 slidably mounted on an inclined surface 18 on the support 12, and means are provided for holding the movable jaw in a desired position relative to the fixed jaw. <IMAGE>