baber/WOPTO huggingface dataset:
Patent GB-1173830-A (GB)
Title: Multiple Turret Head Indexing apparatus for Machine Tools
IPC: B23Q16/10
Filed: 1967-11-03
Abstract: 1,173,830. Turret lathes. BULLARD CO. 3 Nov., 1967 [16 June, 1967], No. 50196/67. Headings B3B and B3T. In a multi-spindle machine tool in which an indexable tool holding turret is provided for each work-holding spindle, means is provided to effect simultaneous rotary indexing of each turret from station to station by way of a rack- and-pinion mechanism which is actuated by hydraulic means and which includes means for sequentially releasing and locking the turrets before and after their indexing movement. Each turret comprise a head portion 52 which is mounted on the machine slide and is movable axially toward and away from slide 26 by an axial lever 52 attached to the head and laterally displaceable by rods co-operating hydraulic pistons 72, 74, one at each end of the slide. The axial movement of the turret head, effects, in relation to its direction of movement, locking and releasing of the turret by toothed members 42, 44 on the turret base and head respectively. In operation the turret heads are released and moved axially by displacement of the rods 62 by the piston 74 which by transverse movement of the levers 52 raises the turret head 28 to clear the toothed portions 42, 44. The rack 106 is then moved by hydraulic means 142, 144 to engage a gear 104 on the slide which in turn engages gears 102 attached to the turret head. When the rack is engaged with the gear, hydraulic piston 128 is actuated to effect a longitudinal movement of the rack and hence rotate the turrets to their next station. The movement of the rack is that of sliding and rotation about a pivot 110 on the slide and the piston 128 effecting actuation of the rack by way of a lever linkage 116. The engagement between the rack and gear is maintained by a lug 162 on the slide, sliding in a slot 166 on the rack when the indexing movement is made. At the completion of the indexing movement the turrets are again clamped in their new positions by the rods 62 which are moved in the opposite direction piston 72 which effects engagement of the toothed portions 42, 44 on the base and head of the turrets and gripping of the lever 52 by the ends of the rods. Pressure of the hydraulic means 142 is then released and the rack is disengaged from the gear by the spring-actuated plunger 152 and the piston 128 actuated to return the rack to its initial position ready for the next indexing movement. The hydraulic pressure fluid is controlled by spool valve 84 and solenoid valve 150 and the cycle of operation may be programme controlled.
Patent GB-1385469-A (GB)
Title: Teaching device
IPC: G09B7/073
Filed: 1970-10-22
Abstract: 1385469 Teaching machines M R LEDGARD 21 Jan 1972 [22 Oct 1970] 50234/70 Headings G4H and G5R A device for teaching a plurality of students or for other methods of audience testing, e.g. public opinion sampling comprises a central unit; separate selection units, one per questionee, each unit enabling the questionee to select a particular answer from a number of given answers to a given question and also providing at least two additional response facilities, for registering positive "don't know" and "assistance required" responses for example; means in the central unit for scanning the selection units and classifying the selected responses on each; means for totalizing and scoring the answer responses; and means in the central unit effective to enable the corrections or degree of incorrectness of each of the possible answer responses to be ascertained if required, thereby allowing the questioner accurately to assess the situation when each question can have a correct answer and a number of other answers which are incorrect to a lesser or greater degree. The teaching programme may be presented by slide projectors, loop-film projectors or the like and the answers may be stored on a magnetic tape loop. The central unit may also include visual indicators, e.g. an array of neon lamps. The scanning means may comprise a uni-selector switch (Fig. 2, not shown) or may be constituted by solid-state circuitry, e.g. a binary decoder fed by a binary counter. The central unit may also include a data-logging device, a data processor with an associated arithmetic unit, a synchronizer, manual/automatic selectors for selecting the topics to be presented and for setting up the "desired order" of answer "correctness", and media-presentation controls; suitable circuit and logic arrangements for the various separate devices are described with reference to Figs. 7 to 21 (not shown).
Patent GB-1337452-A (GB)
Title: Frequency multiplying cirucit
IPC: H03D1/22
Filed: 1971-10-29
Abstract: 1337452 Stereophonic radio receivers; frequency multipliers MOTOROLA Inc 29 Oct 1971 [16 Nov 1970] 50328/71 Headings H4L and H3T In a stereophonic radio receiver, the 19 KHz pilot signal in the output of the F.M. detector 12 is separated at 14, Fig. 2A, and applied in antiphase as gating signals to switching transistors 19, 20 respectively. The composite signals from detector 12, Fig. 2C, is supplied to the base of transistor 18 in the common emitter circuit of transistors 19, 20 so that transistors 19, 20 are rendered conductive on alternate halfcycles of the waveform A to pass signals D and E respectively. Signal D is supplied to the common emitter circuit of switching transistors 21, 22 and signal E is likewise supplied to a similar pair of transistors 23, 24, these transistors being controlled by the 19 KHz signal A phase shifted at 23<SP>1</SP> by 90 degrees (signal B) in the manner shown. Transistors 21, 24 conduct for one halfcycle of signal B, providing outputs F and I respectively, and transistors 22, 23 conduct for the other halfcycle, providing outputs H and G respectively. The collectors of transistors 21, 23 are connected together, providing the left signal J which is supplied to a loudspeaker 41 via amplifier 40 and the right signal K is derived similarly from transistors 22, 24 to operate loudspeaker 51 via amplifier 50. To reduce crosstalk, a similar gating circuit 26 is supplied via transistor 25 with the composite signal appropriately reduced in amplitude and derived via resistor 35 from the emitter circuit of transistor 18. By this means a small amount of right signal is supplied in opposite phase to the right signal crosstalk component in the left signal output J and the left signal crosstalk component is similarly balanced out in the right signal output K. This arrangement also tends to maintain a constant D.C. operating point at the inputs amplifiers 40, 50 so that conventional filtering is not required. It may be formed as an integrated circuit. Frequency multipliers.-If the signal input is replaced by a constant current source, the gates 19 to 24 act as a frequency-doubler producing two outputs in opposite phase and by providing different phase-shifts of the gating signal other harmonics may be produced, Fig. 3 (not shown). A plurality of such gating circuits may be cascaded to provide further variations.
Patent GB-1456120-A (GB)
Title: Electro-optical devices
IPC: H01L33/30
Filed: 1974-11-20
Abstract: 1456120 Semi-conductor devices INTERNATIONAL BUSINESS MACHINES CORP 20 Nov 1974 [26 Dec 1973] 50353/73 Heading H1K A monolithic structure of gallium aluminium arsenide comprises a light emitting diode optically linked to a photodetector via a highly transparent electrical isolation region consisting of Ga. 4 Al. 6 As. The bidirectional device described (Fig. 2) consists of layers 1, I<SP>1</SP> of Ga. 7 Al. 3 As, layers 2, 2<SP>1</SP> of Ga. 9 Al. 1 As constituting light emitting and detecting PN junctions respectively, contact regions 4, 4<SP>1</SP> of Ga. 7 Al. 3 As and isolation region 3 of Ga 4 Al. 6 As doped with C, Cr or O to render it semi-insulating, or with S or Se to render it N-. The device is typically formed by liquid epitaxial growth, using an annular multi-chambered crucible as described in U.K. Specification 1,300,187, on gallium arsenide substrate. After formation of zone 10 by masked diffusion of zinc, and etching to the form shown in a solution of bromine in methanol, contacts are provided as shown.
Patent GB-1029026-A (GB)
Title: Improvements in animal drinking founts
IPC: A01K39/02
Filed: 1964-12-11
Abstract: 1,029,026. Animal drinking appliances. UPJOHN CO. Dec. 11, 1964 [Dec. 23, 1963], No. 50565/64. Heading A1M. An animal drinking fount comprises a body part 12 adapted to be connected to a water supply and having a water supply passage 21 controlled by a check valve 26, and a detachable head portion 11 provided with a passage 54 leading to a valve 60 operable by the animal, the head holding the check valve open so that the passages are in communication with each other when the head is in position on the body part 12 but the check valve closing upon removal of the head. The check valve 26 is spring urged against a resilient seating 23 provided in its housing 13 which fits into the head 11 to define a chamber 52. A pin 43 on head 11 moves the valve 26 from its seating so that water flows into chamber 52 and via passage 54 into a further chamber 53 formed in the head 11 and closed by a valve head 69 carried by a stem 71 which is moved upwardly by the animal to open the valve 69. A pin 72 limits upward movement of the valve head 69.
Patent GB-1115754-A (GB)
Title: Circuit arrangement to control through-connection of a path in a multi-stage crosspoint arrangement
IPC: H04Q3/00
Filed: 1966-11-11
Abstract: 1,115,754. Automatic exchange system. INTERNATIONAL STANDARD ELECTRIC CORPORATION. 11 Nov., 1966 [17 Nov., 1965], No. 50568/66. Heading H4K. In a multi-stage reed-relay switching network wherein each crosspoint relay winding is connected in series with one of its own make contacts and a diode is connected between the junction of the winding and contact and a marker, the marking voltages used in each stage differ from those in the preceding or succeeding stage by an amount equal to the sum of a crosspoint relay's operating voltage and a marking diode's breakdown voltage. As shown, the marking voltages are determined by the Zener diode chain Z. In operation, and after a route finding operation which is not particularly described, the marker stage KStA closes its contact, e.g. R1, corresponding to a selected junctor VS1, and also its contact as1 corresponding to a selected column of relays KPA1 of one A-stage matrix (and similar columns in other A matrices) whereby KPA1 comes up. Thereafter contact bs1 in marker stage EStB is closed whereby KPB1 operates in series with diodes GB1 and GA1, the latter diode breaking down due to the choice of marking potentials. When the transients which occur at operation have ceased, diode GA1 recovers and relay KPB1 then holds in series with KPA1. Similar processes occur for each stage of the network, the chosen path finally being held, when the marker is released, by battery in the line circuit (on the left side of the network but not shown) and earth in the junctor. Reference has been directed by the Comptroller to Specification 1,040,651.
Patent GB-1374506-A (GB)
Title: Aminoplast resin and coated or laminated article of manufacture
IPC: B44C5/04
Filed: 1972-11-03
Abstract: 1374506 Laminates CASSELLA FARBWERKE MAINKUR AG 3 Nov 1972 [5 Nov 1971] 50814/72 Heading B5N [Also in Division C3] Decorative and overlay papers for laminates are impregnated with an aminoplast resin modified by adding to it before during or after its condensation 1 - phenylethane - 1 : 2 - diol in amount 0À5-25 wt. per cent of the modified resin. Suitable aminoplasts are condensates of urea, thiourea, dicyandiamide, acetoguanamine, benzoguanamine or melamine with formaldehyde or acetaldehyde. In Examples 1, 3 and 5 melamine is condensed with formalin, phenylethanediol, sorbitol and sucrose at alkaline pH in molar proportions approximately 1 : 2-2À5 : 0À07-0À13 : 0À02-0À05 : 0À03. The solution is used to impregnate paper which is used as decorative surface paper for chip-board or as decorative and overlay papers for a 9-ply laminate of phenol - formaldehyde impregnated Kraft papers.
Patent GB-1477648-A (GB)
Title: Gas turbine power plant
IPC: F02C7/08
Filed: 1974-11-23
Abstract: 1477648 Gas turbine plant with air pre-heating UNITED TURBINE AB & CO KB 23 Nov 1974 50844/74 Heading F1G The invention relates to a gas turbine plant which comprises an air pre-heater which comprises at least two units disposed laterally of the turbine, each air pre-heater unit comprising two or more elements arranged for parallel flow. In a first embodiment, the plant comprises an air compressor 10, a pair of air pre-heater units 19, 20, a combustion chamber 17, a first turbine 13 directly connected to the compressor by shaft 11, and a second turbine 14 connected by shaft 12 to gearing 15 whereby the turbine 14 may assist to drive the compressor 10; output is taken from the gearing 15 through shaft 16. The two air pre-heater units 19, 20 are disposed laterally of the turbine assembly, each unit comprising three elements. Air from the compressor enters plenum chambers 27, 28 and then flows through the air pre-heater elements from which the air discharges into space 29 from which it enters the combustion chamber 17. Exhaust gases discharge from the turbine 14 into a collector 18 from which they flow through the air pre-heater elements finally discharging through outlets 24, 25. Various dispositions of the two air pre-heater units are described, for example in V-form, in inverted V-form or with four units disposed in rhomboidal form. Methods of assembly of the pre-heater elements are described, for example in Fig. 10 an element comprises unions 95 and 96 also a bellows member 97 which may be contracted by the amount A whereby the element can be moved in the space 91 of width B - the union 95 engages within the opening 94 and the union 96 within the opening 92, the bellows member 97 expanding into the passage 93. In Figs. 16 and 17 the turbine assembly comprises three turbine rotors all mounted on separate shafts but all connected to gearing 15 and output shaft 16. Air flows from the compressor 10 to the pre-heaters 21 through which it flows axially to the combustion chamber 17 which is disposed at the end of the turbine assembly remote from the compressor. The gases flow from the combustion chamber through the turbines, then reverse through 180 degrees to enter the air pre-heaters 21 finally discharging through lateral outlets 24 and 25.
Patent GB-1441336-A (GB)
Title: Apparatus for the removal of layers of polluting liquids  floating on water
IPC: C02F1/40
Filed: 1973-11-06
Abstract: 1441336 Separator for floating impurities SOC GENERALE DE CONSTRUCTIONS ELECTRIQUES ET MECHANIQUES ALSTHOM 6 Nov 1973 [6 Nov 1972] 51499/73 Heading B2P An apparatus for removing a layer of polluting liquid; e.g. oil, floating on the surface of water comprises two spaced vertical walls 1, 2 which together form a convergent inlet for the water and polluting liquid, each of the walls having an inwardly projecting flange 3, 4 along its lower edge, these flanges serving to guide the water and polluting liquid along the convergent inlet towards a tangential inlet 5 of a part-conical cyclone chamber 6 disposed downstream of the convergent inlet, the chamber comprising at its upper portion an end wall having a central orifice 8 provided with a tube projecting above the end wall for the evacuation of the polluting liquid, and the lower portion of the side wall of the chamber being provided with a tangential outlet 7 for the evacuation of the centrifuged water. The wall 2 has a curved inner face 10 which forms the convergent inlet with the plane wall 1, and a plane outer face 11 which can be fixed laterally on the hull 9 of a boat by means of which the apparatus can be moved across the surface of an expanse of liquid-polluted water. Alterntively, the apparatus may be towed by a boat. The apparatus may also be used as a stationary unit in a natural or artificial liquidpolluted water current. Several convergent inlets and cyclone chambers can be grouped or used together to form a single separating apparatus, Specification 1379027 is referred to.
Patent GB-1243357-A (GB)
Title: Superconductive tunnel junction device
IPC: H01L39/22
Filed: 1968-11-04
Abstract: 1,243,357. Superconductor devices. INTERNATIONAL BUSINESS MACHINES CORP. 4 Nov., 1968 [24 Nov., 1967], No. 52179/68. Heading H1K. [Also in Division H3] A superconductor device comprises two superconductive metal films spaced apart on an insulating substrate the adjacent portions of the films being covered with a metal oxide layer bridged by a superconductive layer to form two Josephson junctions in series and a control conductor crossing the junctions in a direction perpendicular to the current path through the junctions. As shown, Fig. 1, two gate conductors 6, 8 are vapour deposited through a mask on a layer 2 cf insulating material such as silicon monoxide provided on the surface of a superconductive ground plane 4 supported by a glass substrate (not shown). The adjacent ends of the gate conductors 6, 8 are oxidized to form thin insulating layers 10, 12 and a superconductor layer 16 is deposited bridging the gap to form two Josephson junctions in series. A layer 18 of insulating material is deposited across the bridge and a control conductor 20 is deposited on this layer. When a current is applied to the control conductor 20 the junctions are switched from a superconducting state (tunnelling with no voltage drop) to the normal state (quasi particle tunnelling). The superconductor films may be of lead, tin, niobium or tantalum. Two such devices may be connected in parallel to form a bi-stable memory circuit.
Patent GB-1222639-A (GB)
Title: Passenger car with a roll yoke
IPC: B62D39/00
Filed: 1969-10-24
Abstract: 1,222,639. Roll yokes. DR. ING h.c.F. PORSCHE K.G. 24 Oct., 1969 [14 Nov., 1968], No. 52207/69. Heading B7B. A plastics vehicle body has the roll yoke incorporated with the door lock pillar and comprises inner and outer extension mouldings 17, 18 formed integrally with the inner and outer body panels 9, 10 which extend from the floor to the waist line. The horizontal part 20 of the roll yoke is welded to the extensions 17, 18 and a corrugated stiffener 21 is welded to the inner moulding 18.
Patent GB-1485097-A (GB)
Title: Coatings on a transparent substrate
IPC: G03F1/00
Filed: 1975-12-23
Abstract: 1485097 Photo-resist process BALZERS PATENT-und BETEILIGUNGS AG 23 Dec 1975 [7 Jan 1975] 52523/75 Heading G2X Two coatings in the form of adjacent comp lementary images are formed on a substrate surface by (1) forming a coating of first material on the desired areas of the substrate surface; (2) applying a layer of positive-working photo-resist over both the first coating and the uncoated parts of the surface; (3) exposing through the substrate, the first coating being substantially opaque to the radiation used; (4) developing to remove the exposed areas of the photo-resist layer (i.e. those areas not on the first coating); (5) applying the second coating and (6) removing the remaining photo-resist layer together with the parts of the second coating thereon.
Patent GB-1421474-A (GB)
Title: Printer control system
IPC: B41J9/48
Filed: 1973-11-15
Abstract: 1421474 Control of printers INTERNATIONAL BUSINESS MACHINES CORP 15 Nov 1973 [26 Dec 1972] 53050/73 Heading G4H A printer incorporates means for varying the width of the pulse applied to the print hammers in accordance with the thickness of the forms on which printing is effected and with the print hammer energization voltage so as to maintain a constant impact force to provide uniform print density. Means are also included for varying the time of initiating the pulses. As described, the printer 11, Fig. 1, is the belt printer of Specification 919,653. Data from buffer 26 is scanned under the control of a gating ring 34 defining subcycles in which groups of hammers 20 are energized by latches 36. In the present invention, the outputs from latches 36 are fed via gates 38 enabled for variable times by a pulse control 40, Fig. 4, connected to ring 34, to the voltage source, to a potentiometer 42 whose setting is controlled by the sensed forms thickness (up to 6 forms may be used), and to a device 18 which monitors the movement of belt 12. A pulse from 18 sets a latch 44 which causes the sequential actuation of delays 46, 48 whose durations are non-linear functions of the 24 V supply and the setting of potentiometer 42 respectively At the end of these delays, output 94 from 48 resets latch 44 and provides one input to gates 50-54 one of which is selected by the scanning circuitry. The output from the enabled gate sets a latch 56-60 which starts a delay 62-66 whose duration determines the width of the pulse applied to the print hammers, this width being a non-linear function of the supply voltage and the forms thickness as determined by a control 68. At the end of the delay, the corresponding latch is reset, and the print hammer pulse is terminated. Circuit embodiments are described (Figs. 5- 10, not shown) for the various blocks of Fig. 4.
Patent GB-1188750-A (GB)
Title: Catalytic Cracking.
IPC: C10L1/06
Filed: 1968-11-13
Abstract: 1,188,750. Cracking. TEXACO DEVELOPMENT CORP. 13 Nov., 1968 [1 Dec., 1967], No. 53735/68. Heading C5E. A process for the production of gasoline motor fuel components from a catalytic cracking unit feedstock comprising polycyclic aromatic components comprises (1) subjecting said feedstock to catalytic cracking under conditions effecting not more than 80 volume percent conversion per pass, (2) separating from the effluent of the catalytic cracking unit a 430‹ F. + gas oil fraction containing a concentration of polycyclic aromatic components in excess of the concentration of said components in the fresh feedstock, (3) subjecting at least a portion of the 430‹ F. + gas oil fraction to hydrogen treatment under conditions effecting reduction of the polycylic aromatic content of said gas oil fraction to a concentration not appreciably greater than that of said fresh feedstock, (4) separating effluent from said hydrotreating step into a normally gaseous fraction and a normally liquid fraction, and (5) passing substantially all of said normally liquid fraction from said hydrotreating step to said catalytic cracking unit as part of the feed thereto. The cracking catalyst may comprise a crystalline aluminosilicate containing cerium or lanthanum or their oxides or sulphides. The hydrotreating catalyst may comprise oxides of boron, cobalt, molybdenum, nickel or tungsten on an alumina base and may be presulphided.