baber/WOPTO huggingface dataset:
Patent GB-1409889-A (GB)
Title: Manufacture of multi-track magnetic heads
IPC: G11B5/60
Filed: 1972-12-29
Abstract: 1409889 Multi-track magnetic heads DATA RECORDING INSTRUMENT CO Ltd 14 Dec 1973 [29 Dec 1972] 60100/72 Heading G5R [Also in Division B3] In a method of making multi-track magnetic heads slots 16, Fig. 6, are formed in each of a plurality of strips 14 of magnetic material, such as ferrite or mumetal, each strip 14 is wound with coils 18 passing through respective slots 16, the strips 14, with the coils 18 thereon, are bonded together in spaced parallel relationship with corresponding slots 16 aligned in a direction transverse to the length of the strips, and the bonded strips are divided along spaced parallel planes (32), Fig. 8 (not shown), extending in said transverse direction to produce a plurality of substantially identical multi-track head parts each containing a respective portion 25, Fig. 9, of each strip 14, each said portion having a respective one of the coils 18 electromagnetically coupled to it. Slots 12, Fig. 1, are formed in a plate 11, of glass or glass ceramic, bonded to a plate 10 of magnetic material. The bonded plates are divided along planes 33 and the laminated strips 13 thus produced are turned through 90 degrees and temporarily mounted together during formation of the slots 16, the slots 16 and slots 12 being aligned. Following coil winding, the ends of the coils 18 are attached to conductive strips 20, Fig. 6, on insulating strips 19 and the strips 13, each forming a plurality of C-cores, are bonded together and one face 17 of the assembly is lapped optically flat. By a similar method an assembly of I-cores, Fig. 8 (not shown), defined by parallel magnetic strips 21, Fig. 9, of ferrite or mumetal spaced by strips 22 of glass or glass ceramic and without slots 12, 16 or coils 18, is produced and the C-core and I- core assemblies are then bonded together, e.g. by resin. Non-magnetic gaps 28 are defined between the I- and C-cores by depositing silicon monoxide on the lapped surfaces of the two assemblies or by gold strips (27), Fig. 7 (not shown), along end edges of the I-core assembly. The combined assembly is then divided along said planes (32), the portions having gold strips being discarded. Each multi-track head 24 is mounted on a carrier 29 and the head surface 31 is lapped to give the required depth of the gaps 28 and to form a profile ensuring that, in use with a magnetic disc, the head floats on a film of air, the carrier 29 also having air bearing pads 30. By producing a second assembly of C- cores, bonding it to the face of the I-core assembly opposite to the face thereof bonded to the first C-core assembly, and then dividing the triple combination along said planes (32), multitrack heads wherein each track element has an erase gap and a record/playback gap may be produced.
Patent GB-1240848-A (GB)
Title: Improvements relating to clutches and brakes
IPC: F16D65/18
Filed: 1968-12-20
Abstract: 1,240,848. Friction clutches; brakes. ROBERT BOSCH G.m.b.H. 20 Dec., 1968 [21 Dec., 1967], No. 60641/68. Headings F2C and F2E. In an electromagnetically operated friction clutch the friction disc 6, Figs. 1 and 2, which is of steel, has sector-shaped friction linings 7-10 on its front and rear faces of sintered iron. Holes 11, 12 are present in the disc 6 and the front and rear linings are in contact through these. The stationary electromagnets 22, Fig. 1, are spot welded to a plate 23 and the lines of force pass through a flywheel 15, linings 7, 8, pressure plate 16, linings 10, 9 and back through the flywheel to the magnet. The friction disc is splined at 4 to an output shaft 3. The invention may be incorporated in a brake.
Patent GB-1158225-A (GB)
Title: Card Readout Machines.
Inventor: DAVIDSON RICHARD MICHAEL
IPC: G09B5/06
Filed: 1967-10-06
Abstract: 1,158,225. Play-back of card records. BELL & HOWELL CO. 6 Oct., 1967 [31 Oct., 1966], No. 61416/68. Divided out of 1,158,224. Heading G5R. A rectangular card 48 carrying a magnetic or optical sound track 33 is fed by a roller 20 along a feed path 12, 14 past a play-back head 28, and the swinging of guide rollers 62 across the feed path facilitates the use of circular cards (Figs. 4, 5, 6). The cards may have interruptions in their sound track portions as disclosed in Specification 1,158,224.
Patent GB-1192944-A (GB)
Title: Lactones of Phenyl-Cyclohexanehydroxycarboxylic Acids and preparation thereof
IPC: C07D493/08
Filed: 1967-05-09
Abstract: 1,192,944. Lactones of phenylcyclohexanehydroxy carboxylic acids. ORTHO PHARMACEUTICAL CORP. 9 May, 1967 [24 June, 1966], No. 63429/69. Divided out of 1,192,943. Heading C2C. Novel compounds of the formula wherein R is H, C 2-9  alkanoyl or tetrahydropyranyl and each R<SP>11</SP> is C 1-8  alkyl (the same or different) are prepared by reaction of a compound of the formula with p-(tetrahydropyraryloxy)-phenyl magnesium bromide to give the required products wherein R is tetrahydropyraryl, if desired, hydrolysing these to the products wherein R is H, and, if desired, acylating these. Concomitantly formed are the free hydroxy acids corresponding to the lactones of the invention; or these may be formed by saponification of the lactones. These hydroxy acids may similarly be de-etherified to give the free 4-(p-hydroxyphenyl) - 4 - hydroxy - 2,3 - dialkylcyclohexane - carboxylic acids, which, as the free compounds or their acylates and/or anhydrides, on dehydration in the presence of Lewis acids, e.g. BF 3  etherate or p-toluenesulphonic acids, give not only the corresponding 3- or 4-cyclohexene compounds (see Specification 1,192,943) but also lactones of this invention. These lactones exist in 4 stereochemical forms.
Patent GB-640184-A (GB)
Abstract: 640,184. Valve amplifying circuits. PHILIPS ELECTRICAL, Ltd. Oct. 22, 1947, No. 28292. Convention date, Oct. 25, 1946. [Class 40 (vi)] In a tone-control arrangement for a lowfrequency amplifier, a frequency dependent negative feed-back voltage derived from a sliding contact on a potentiometer 5 is made effective through a high resistance 12, for example in the grid circuit of at least one amplifier valve 3, a voltage proportional to the output voltage of the amplifier being applied through a low-frequency band-pass filter 6 and 7 to a point a on the potentiometer and through an intermediate frequency band filter 8, 9, 10 and 11 to a point b. In addition, a point c on the potentiometer may be linked by a small condenser 13 to the grid and the sliding contact may be linked by a slightly larger condenser 14 to the unearthed terminal of the output transformer 4. The effect of these arrangements is that when the sliding contact is at point a there is negative feedback of low frequencies, at point b of intermediate frequencies and at point c of high frequencies, and three amplitude frequency output curves are obtained with a dip in each curve at low, intermediate, or high frequencies respectively. The order of points a, band c on the potentiometer may be altered to bring a desired point to the more critical point of adjustment on the potentiometer.
Patent GB-782612-A (GB)
Abstract: 782,612. Preparing fibres for spinning. SPINNBAU GES. Sept. 8, 1955 [Sept. 21, 1954], No. 25712/55. Classes 120(1) and 120(3) Synthetic and artificial fibres, e.g. fibres of nylon, perlon, rayon, polyesters, or polyvinyl compositions such as polyacrylonitrile and polyvinyl chloride, and/or waste thereof are prepared for spinning by successively passing through stretching apparatus, opening and parallelizing by means of a card cylinder, consolidating into a band. optionally drafting, and feeding to a cutting device. Cut material may be removed pneumatically to store or a succeeding machine. In the operation of the apparatus shown (comprised in. a single unit), the fibres pass over a feed table 1 to apparatus S comprising pairs of stretching rollers 2a, 2a<SP>1</SP> and 2b, 2b<SP>1</SP>, and is then advanced by a roller 7 in a feed guide 6 to the main cylinder 8 of a card K which may comprise worker and stripper as in a strongly reinforced jute card: opened and parallelized fibres are removed by a doffer 9, conveyed to delivery rollers 10, thence down the inclined track of a device 12 which compacts the fibres into a band which passes between feed rollers 13, through a drafting device 14, to a cutter S<SP>1</SP> (driven from the card K) whereby it is severed into uniform staple lengths which are removed by suction.
Patent GB-2000407-A (GB)
Title: Volatile/non-volatile latch
IPC: G11C14/00
Filed: 1978-06-16
Abstract: A logic element employing fixed threshold and variable threshold transistors are electrically connected together to form a latch circuit which can be made to retain data by keeping certain internal nodes at a high or low voltage level. One or several of the transistors of the latch circuit have threshold voltage that can be raised or lowered upon application of a relatively high voltage pulse between their gate electrode and substrate. This gives the circuit a non-volatile storage capability making it useful as a memory element.
Patent GB-2003500-A (GB)
Title: Particulate ferrochromium for gravity separation of diamonds
IPC: C22C35/00
Filed: 1978-08-09
Abstract: A ferrochrome alloy, includes, as essential constituents, 18 to 30 percent by weight chromium, 0,6 to 3 percent by weight carbon and 0,5 to 10 percent by weight silicon, the balance being iron. The invention also provides a method of improving the magnetic properties of such an alloy by heat treating the alloy at a temperature of 550 to 1000 DEG C for a time sufficient to produce the desired result.
Patent GB-2002736-A (GB)
Title: Process and apparatus for the production of sterile water
IPC: B01D61/02
Filed: 1978-08-16
Abstract: A process and an apparatus for the continuous production of pyrogen-free sterile water from untreated water in which the water is pressurised, pre-filtered, subjected to an ion-exchange process, and then is subjected to a reverse osmosis process in which the permeate comprises the pyrogen-free sterile water and the concentrate is returned to the untreated water prior to pressurisation. Provision is made for the removal of the heat generated during the pressurising step. Preferably the prefiltering is accomplished by a second reverse osmosis step. The pyrogen-free sterile water thus produced can be used in injection and infusion solutions and in eye medicaments.
Patent GB-2003421-A (GB)
Title: Mould assembly and method of making the same
IPC: B22C9/04
Filed: 1978-08-24
Abstract: A segmented mold assembly (30) is utilized to cast a turbine engine component having a relatively heavy hub from which relatively light vanes project. The mold assembly includes a plurality of sections (38) (58) (76) which are formed of a ceramic mold material and are interconnected at flange joints. The mold sections are advantageously formed by repetitively dipping patterns in a slurry of liquid ceramic mold material to form wet coatings on the patterns. These wet coatings are dried and separated from the patterns to form the mold sections. The mold sections (38) which are used to cast the vanes retard the removal of heat from the vanes to provide time for the hub to solidify. This can be accomplished by using relatively thick walled mold sections to form the mold cavities in which vanes are cast and relatively thin walled mold sections to form the cavity in which the hub is cast. This could also be accomplished by forming the vane mold sections of material having a relatively low rate of heat removal and the hub mold sections of a material having a relatively high rate of heat removal. <IMAGE>
Patent GB-2007112-A (GB)
Title: Pulverizer arrangement
IPC: B02C17/04
Filed: 1978-10-02
Abstract: A pulverizer arrangement is provided which allows for blending different pulverized solids e.g. coal before passing the pulverized solids to points of use. The pulverizer arrangement includes a plurality of pulverizer sections, a receptacle for receiving pulverized solids from each of the pulverizer sections, means for passing pulverized solids from each pulverizer section to the receptacle, and means for distributing the pulverized solids from the receptacle to points of use. The arrangement also includes means for classifying solids pulverized in the pulverizer sections; the pulverizer sections comprising a double-ended ball mill. <IMAGE>
Patent GB-2010562-A (GB)
Title: Apparatus for Tuning Musical Instruments
IPC: G10G7/02
Filed: 1978-11-17
Abstract: Apparatus for tuning musical instruments comprises a signal pick- up/transducer 1, an amplifier 2, a frequency-to-voltage converter 3, and a filter 4 means (5) for the comparison of the voltage from 3 with a value representing a desired pitch set at 6, and means D1, D2, D3 such as eight- emitting diodes for communicating the results of the comparative analysis. <IMAGE>
Patent GB-2012412-A (GB)
Title: A Flame Failure Device
IPC: F23N5/04
Filed: 1978-12-28
Abstract: The flame failure device which shuts off a valve controlling the gas feed to a burner if a flame on the burner is extinguished. Comprises a bimetallic strip 7, connected to a stop 3 by a rod 10, and the valve knob 1 is rotated to engage the stop against the action of a torque spring. When the flame is extinguished, stop 3 moves in the direction Y and the knob rotates to close the valve. <IMAGE>
Patent GB-2013565-A (GB)
Title: Decorative Wall Coverings
IPC: D06N7/00
Filed: 1979-01-29
Abstract: A decorative wall covering and a method and apparatus for manufacturing same. To avoid the gaps produced in backing sheets laminated with a decorative spun yarn adhered thereto the present invention provides a backing sheet of paper or other flexible material which has parallel lengths of an irregular yarn adhered thereto. Preferably, the yarn is a snarled, brushed, raised, boucle or knotted yarn which is adhered to the backing by a hot melt adhesive such as a polyamide or a polyurethane. The apparatus described comprises a roll of paper 1 precoated with an adhesive which is fed between the nip of a hot roll 3 and a cold roll 7 together with a ply of irregular yarns 4 taken from a creel 5 and spaced by a comb 6. The laminated backing paper and yarns are then fed partly around a cold roll 8 to set the adhesive and the laminate is then wound up to a roll on stand 9. <IMAGE>
Patent GB-2013027-A (GB)
Title: Integrated circuit packages
IPC: H01L23/14
Filed: 1979-02-26
Abstract: A large scale integrated circuit package (1) includes a base or substrate section (2) and a lid structure (3) of thermally conductive material to which the chip or die 12 of the package is mounted. The lid 3 comprises a ceramic frame (11) defining a recess 5 for the chip and a metal plate 10. The frame 11 carries conductive tracks (14) which are coupled to the connector pads (15) of the chip or die 12. The base (2) has a recess (5) which accommodate the chip and frame and which is closed by the lid structure. The base of the recess is provided with conductive tracks (7) which co-operate with those on the frame. The electrical connections between the two sets of tracks is formed by thermo-compression techniques, which compress balls (18) of conductive material. <IMAGE>
Patent GB-2017479-A (GB)
Title: Baker's oven
IPC: A21B1/44
Filed: 1979-03-30
Abstract: An oven has a racksupport (12) mounted in oven chamber (11) for rotation about a vertical axis, e.g. a horizontal plate rotatably mounted in the floor of the chamber adapted to support a rack (S1, S2) loaded with goods for baking. The rack is movable into and out of oven chamber (11) through access opening (11A) provided in a sidewall of the oven chamber. To facilitate the pushing in of two or more racks to be positioned side by side within the oven chamber, the rack support (12) is stoppable in at least one rest position so that the racks (S1, S2) can be successively pushed in or pulled out obliquely to the access opening with an intervening rotation of the rack support (12) through a predetermined angle (2 alpha  or 180 DEG ). <IMAGE>
Patent GB-2022509-A (GB)
Title: A multilayer beam
IPC: B27N5/00
Filed: 1979-05-29
Abstract: A structural load-bearing beam comprises wood boards or slats adhered to at least one pair of opposite sides of an extruded body (1) comprising a mixture of coarse and fine elongate chips or fibres having a specific gravity in the range from about 450 to 750 kg/m<3>, with the chips or fibres oriented predominantly in the longitudinal direction of the beam and held together by a binding agent. The thickness of each layer (2) in proportion to the thickness of the body (1), as measured in the same direction, is in the ratio of approximately from 1:6 to 1:25. The beam may have tongue and groove formations (4 and 5) for interlocking with adjacent beams. The cavity (3) may be filled with insulating material such as polyurethane foam. The natural fibrous material of the body (1) may comprise wood, straw, bagasse, cotton straw, sisal fibre or refuse fibre. <IMAGE>
Patent GB-2056328-A (GB)
Title: Method of producing stainless steel spring materials having an excellent fatigue resistant property
IPC: C21D9/02
Filed: 1979-08-21
Abstract: Stainless steel spring materials are produced by subjecting austenitic stainless steel having a particular chemical composition to a cold working. An annealing treatment just before a final cold working is carried out at a temperature of 200-1,150 DEG C excluding a range of 550 DEG C to 750 DEG C and if necessary, a tempering treatment is carried out at a temperature of 200-550 DEG C after the final cold working, so as to give a Vickers hardness of 500-650.
Patent GB-2032090-A (GB)
Title: Tube-in-shell heat exchangers
IPC: F28D7/16
Filed: 1979-09-07
Abstract: A tube-in-shell heat exchanger wherein the tube bundle has a central spine which carries a series of bracing grids for the tubes. The grids are resiliently mounted on the spine so that differential thermal expansion of one group of tubes relative to other groups of tubes and structure can be accommodated without inducing severe thermal stress.
Patent GB-2032960-A (GB)
Title: Diaphragm for Use in the Electrolysis of Alkali Metal Chlorides
IPC: C25B13/04
Filed: 1979-09-25
Abstract: The diaphragm comprises a thermoplastic support fabric impregnated with particles of a siliceous composition having the formula:   (X)m(Si)p(O)q(H)r.nH2O  wherein X is at least one metal selected from the group consisting of Be, Mg, Ca, Sr, Ba, Ti, Zr, Al, Zn and mixtures thereof;   p is a number from 1 to about 16;   m is zero to about p;   q is a number from 2 to about 5p+r;   r is zero to about 4p; and   n is zero to about 30, and the fabric is provided with means to provide linear flow of electrolyte therethrough, e.g. fibre bundles distributed perpendicular to the plane of the outer surface of a felt fabric. The siliceous compositions are capable of undergoing hydration when in contact with at least one of the ionizable compounds in the electrolytic cell. The diaphragms are physically and chemically stable, provide reduced cell voltages during operation of the cell and have increased operational life.
Patent GB-2037539-A (GB)
Title: Push Button Telephone Circuit
IPC: H04M1/26
Filed: 1979-11-09
Abstract: A push-button telephone circuit in which for speech transmission the loop current flows through the cradle switch, keyboard contacts S9, relay contacts Rls 1, and the speech circuit and for call number selection it flows through the cradle switch GU, the selector circuit, and a resistor R2. In the selector circuit, the loop current flows through a polarity protector, and charges a buffer capacitor C4 thereby providing a supply potential; and a transistor Ts7 is turned on at a predetermined threshold of this charging current. A device SST accepts the surplus loop current and together with transistors Ts1 ,Ts2 and diode D11 regulates the surplus loop current so as to obtain a constant potential, and together with the diode D10 limits excess current. The winding Rls 1 of the relay is connected in series with an auxilliary capacitor C3. This arrangement requires fewer components, electronic subscriber, identification and repeat coil facilities are also possible, some circuit elements are used for more than one function. <IMAGE>
Patent GB-2053111-A (GB)
Title: Vehicle luggage carrier
IPC: B60R9/045
Filed: 1979-11-21
Abstract: A vehicle luggage carrier comprises a pair of elongated slats (16, 18) on the generally horizontal roof (12) or boot lid of the vehicle (14) extending preferably longitudinally of the body. The slats (16, 18) are substantially rectangular in the vertical cross section with a width substantially greater than the height, their tops being flat and providing longitudinally extending channels by which a pair of laterally extending article supporting cross slats (90) may have their opposite ends secured thereto, the cross slats being adjustable lengthwise of the fixed slats and being totally removable therefrom. Preferably a pair of transversely or laterally extending article constraining bars or rails (70) are supported at their opposite ends in relation to the fixed slats by means of side rails (42) carried by a plurality of stanchion assemblies (46) disposed on the fixed slats and longitudinally adjustable therealong. <IMAGE>
Patent GB-2041226-A (GB)
Title: Dice for a darts game
IPC: A63F3/00
Filed: 1980-01-02
Abstract: Dice for a darts game are as shown in Fig. 2, the score being kept on a board as in Fig. 1. Cards may replace the dice. Dice having a multiple of six sides can also be used. <IMAGE>
Patent GB-2068843-A (GB)
Title: Shaping the edges of board material
IPC: B31F1/00
Filed: 1980-02-02
Abstract: A method and apparatus for edge-shaping board material, such as coated fibreboard, in which a sheet of the material 26 is laid on a base 18 with a spacer 24 disposed between the base and the sheet, the sheet over-lying chamfered edges 24 of the spacer, and the sheet is engaged along lines spaced from said edge and outside the spacer by a peripheral cutting blade 20 mounted on a tool platen 19, the cutting blade serving to deform the edge of the sheet towards the base, thereby shaping the edge, simultaneously with cutting the sheet to shape. A peripheral embossing tool 25 is also mounted on the tool platen 19 to emboss a line 17 on the sheet adjacent the shaped edge 16. Where the shaped board is to be used as a file cover, spine creases 12 are also formed. <IMAGE>
Patent GB-2048434-A (GB)
Title: Fluid control valve with rotary member
IPC: F16K5/08
Filed: 1980-03-14
Abstract: This invention relates to a fluid flow valve which includes a valve body (10), a fluid passage (16, 18) through the body, a holed valve member (12) located in the passage for rotational movement in low friction bearings (26) between it and the body for movement between a first position in which the hole (20) is in register with the passage and the valve open and a second position in which the hole is out of register with the passage to close the valve and means (22) for rotating the valve member between its two positions. <IMAGE>
Patent GB-2048406-A (GB)
Title: Band brake assembly
IPC: F16D65/04
Filed: 1980-04-03
Abstract: The assembly brakes a carrier (44) in an automatic power transmission mechanism and comprises a band 56 surrounding a drum 54 defined by carrier (44), a fluid pressure operated servo 74 with a piston rod 128 connected to the operating end of the band 56 by a strut 130, and the the anchor end of the band 56 being connected by a reaction strut 112 to a reaction pin 114 mounted in the housing 100 of the transmission; the struts 130, 112 are respectively received in recesses in the ends of the band 56 and one held therein by retainer means in the form of pins 136; 126 passing through aligned openings 134, 132; 124, 122, or (as seen in Fig. 3) in the form of tabs on the ends of the band. The lengths of the struts can be chosen to suit any particular application - this makes it unnecessary to provide mechanical adjustment in the servo to compensate for slack in the band. <IMAGE>