baber/WOPTO huggingface dataset:
Patent GB-1418119-A (GB)
Title: Apparatus for recording with a light beam
IPC: G09G3/02
Filed: 1973-11-30
Abstract: 1418119 Electric selective signalling G S B STREET 30 Nov 1973 [30 Nov 1972] 55704/73 Addition to 1324241 Heading G1J [Also in Division G4] The invention is a modification of the information recording system of Specification 1324241. Fig. 3 shows schematically a modified version of the mirror control circuit of Fig. 2 of Specification 1324241. X, Y position signals for a pair of steering mirrors are fed to binary rate multipliers 300, 301 and compared at 304-307 with feedback position pulse signals from interference fringe counters, the resulting difference signals being converted to analog form at 308, 309 for use as mirror drive signals see Fig. 1 of Specification 1324241. The outputs from 308, 309 are also fed via summing amplifiers 311, 313 and gates 312, 314 to a fine control circuit for the light beam. The pulse-train outputs from 300, 301 are fed directly to an intensity control circuit Fig. 2 (not shown), where they are used to generate bright-up pulses for application to a light-modulator at intervals corresponding to the completion of equal steps of movement across the recording medium. Means (149-155) are provided for varying the amplitude and length of the bright-up pulses to control the density of the trace on the recording medium and to compensate for changes in light source intensity. Means 320-334 are provided for changing the scale and/or orientation of the recorded signals by converting the outputs, X, Y from 300, 301 to the form a X+bY, cX+dY respectively. A diaphragm with a circular aperture is located in the path of the light beam. During non- recording periods, gates 316, 317 connect an oscillator to the fine control circuit to cause the beam to execute a circular movement of diameter greater than that of the aperture.
Patent GB-1205047-A (GB)
Title: Process for preparing macrocyclic ketones
IPC: C07C35/23
Filed: 1967-12-08
Abstract: 1,205,047. Preparation of cycloalkanones. R. FIRMENICH, G. FIRMENICH, R. E. FIRMENICH, and F. H. FIRMENICH, [trading as FIRMENICH & CIE]. 8 Dec., 1967 [8 Dec., 1966], No. 55866/67. Heading C2C. Cyclopentadecanone and 3 - methyl - cyclopentadecanone are prepared by catalytically hydrogenating an unsaturated ketone of formula wherein R is H or CH 3  and X is -CH 2 -CH= CH-, -CH = CH-CH 2 -, -CH 2 -C#C- or -C#C-CH 2 -. In examples: (1) a mixture of cyclopentadec-4- and -5-ene-1-ones is hydrogenated using H 2  and Raney nickel to give cyclopentadecenone; (2) 3-methylcyclopentadecan-1-one is prepared as in (1) from the corresponding unsaturated ketones and its semicarbazone is specified, (3) bicyclo[10.3.0]pentadec-1(12)-en-13-one is oxidized with H 2 O 2  to 1,12 - epoxy - bicyclo[10.3.0]pentadec - 13 - one which is treated with toluene-p-sulphonyl hydrazide to yield the corresponding tosylhydrazone which is decomposed by passage through a column of silica gel to give cyclopentadec-4-yn - 1 - one, which is successively hydrogenated to cis-cyclopentadec-4-en-1-one and cyclopentadecanone. Further examples are given.
Patent GB-1523120-A (GB)
Title: Varistors
IPC: H01C7/115
Filed: 1975-12-18
Abstract: 1523120 Varistor composition LUCAS ELECTRICAL CO Ltd 18 Dec 1975 [27 Dec 1974] 55905/74 Heading C1J [Also in Division H1] A varistor comprises a sintered mixture containing at least 90% mole of titanium dioxide, from 0À1 to 9.9% mole of antimony oxide and one or more further constituents selected from zinc oxide, cadmium oxide and lithium oxide the total amount of said further constituents being between 0À1 and 9.9% mole. As described the mixture is formed by dry ball milling either the constituent oxides or compounds which reduce to them, pressing the milled mixture into a mould to form a pastille, sintering this in an oxidizing atmosphere at 1300-1500‹ C. on an alumina or titania substrate, cooling gradually or quenching and then providing silver paste electrodes on the faces of the pastille. The effect of varying the composition and the sintering conditions on the current voltage characteristic is discussed with reference to examples.
Patent GB-1193169-A (GB)
Title: Improvements in or relating to Hydraulic Braking Systems
IPC: F16D65/18
Filed: 1967-12-11
Abstract: 1,193,169. Disc brakes; brake cylinders. ALFRED TEVES G.m.b.H. 11 Dec., 1967 [7 March, 1967], No. 56206/67. Headings F2E and F2F. To prevent the leading edge of a piston 2 from damaging the cylinder bore when heavy braking torque on a disc 4 tends to twist the piston from its axis, the end portions of the bore and piston are of enlarged and reduced diameter respectively, the sealing ring 9 being positioned never to communicate with the enlarged portion of the cylinder, and the step (14a, Fig. 2, not shown) between the two piston portions always lying in the enlarged cylinder portion for all positions of the piston. The sealing ring may be mounted in the cylinder, or on the piston (Fig. 3, not shown); and the length of the bore (a) between the ring and the enlarged portion is of the same order of size as the difference (D-d) in the diameters. The piston is chromium plated, and the cylinder cadmium plated.
Patent GB-1495699-A (GB)
Title: Apparatus and method for sensing particles
IPC: G08B17/11
Filed: 1973-12-06
Abstract: 1495699 Sensing solid particles in a gas NATIONAL RESEARCH DEVELOPMENT CORP 5 Dec 1974 [6 Dec 1973 26 April 1974] 56499/73 Heading G1N Solid particles in a gas are sensed by subjecting a portion of the gas in a chamber in succession to a period of ionization into ion pairs, a delay period and a period of ionization detection. In figure 1, the apparatus comprises ionization discharge electrodes 8 and ionization detection electrodes 11, and a cylic control device actuates discharge electrodes 8 for a first period, neither the discharge nor the detection electrodes for a second period and the detection electrodes 11 for a third period. In Fig. 2, gas flows continuously through chamber 20 containing a radio-active ionization source 22 and a detection electrode 23, and each portion of gas is subjected in turn to a period of ionization by source 22, a delay period in which it travels along the tube, and a period in which it engages electrode 23.
Patent GB-1448994-A (GB)
Title: Liquid metal cooled fast breeder nuclear reactors
IPC: G21C1/02
Filed: 1973-12-06
Abstract: 1448994 Nuclear reactors UNITED KINGDOM ATOMIC ENERGY AUTHORITY 22 Nov 1974 [6 Dec 1973] 56704/73 Heading G6C In a liquid metal cooled fast breeder reactor, sealing between a heat-exchanger 13 and its surrounding housing 10 is effected by means of gas pocket traps. In one embodiment (Fig. 3), the lower wall 19 of the heat exchanger shell is frusto-conical and supports dependent skirts 21. The lower wall of the housing 10 is formed by a removable frusto-conical member 20 which supports invected skirts 23 which interleave with the dependent skirts 21 so as to afford gas pockets 22 trapped between pools 24 of retained liquid metal. Gas-blowing and monitoring ducts 29, 33, 34 extend to the seal from outside the reactor vault. The provisional Specification discloses a second embodiment (Fig. 2) in which an inverted skirt 15 extending upwards from the lower wall 16 of the housing 10 enters the annular space 17 between the heat exchanger shell 13 and an associated skirt 18 so to trap a pocket of gas above the liquid metal coolant.
Patent GB-1448860-A (GB)
Title: Windows
IPC: E05D15/20
Filed: 1973-12-07
Abstract: 1448860 Windows GRETSCH-UNITAS GmbH BAUBESCHLAGFABRIK 7 Dec 1973 [7 Dec 1972] 56915/73 Heading E1J A window has a wing supported by lower arms 9 (Figs. 2-4) and upper arms 10 (Figs. 5-7), each arm having pivotable connections 25, 8 to the main frame and the wing respectively, each arm having a T-shaped or Y-shaped slot receiving a movable control pin 11, 12 and a further slot receiving locking pin 13, 14. The control and locking pins are moved together by rod (20) slidably mounted on the sash. When rod 20 is moved down the pins move in the slots so that upper arm 10 is pivoted (Fig. 6) and the wing is tilted. Further downward movement causes pivoting of the lower arm 9 (Fig. 4) and further pivoting of upper arm 10 (Fig. 7) and the wing assumes a position spaced from and parallel to its closed position. The wing may then be slid vertically, pin 25 running in a guide groove in the main frame.
Patent GB-1240900-A (GB)
Title: Motor vehicle suspensions
Inventor: ABBOTT BRIAN
IPC: B60G3/24
Filed: 1968-12-04
Abstract: 1,240,900. Suspension for driven wheel. FORD MOTOR CO. Ltd. 4 Dec., 1968, No. 57454/68. Heading B7D. The suspension for a driven wheel of a motor vehicle comprises a fixed length drive-shaft 15 universally jointed to a differential gear 12 and to a wheel hub 17, on the carrier 14 of which is mounted a telescopic strut 18, and a wheel locating member, consisting of a track control arm 20 and a tie rod 23, controlling the roll steer angle of the wheel and locating it longitudinally. The arm 20 is pivoted to the carrier 14, and to the sprung mass adjacent the differential gear, and the tie-rod 23 is pivoted to the chassis at 24 either forwardly (as shown) or rearwardly of the wheel hub. The mountings 21, 22, 24 may comprise rubber bushings. The wheel may be sprung by a torsion bar 25, 26, or a coil spring concentric with the strut 18, or a transverse leaf spring. The tie-rod may be combined with an anti-roll bar. The wheel locating member may alternatively be in the form of a semi-trailing wishbone.
Patent GB-1200389-A (GB)
Title: Temperature control
IPC: G05D23/24
Filed: 1967-12-21
Abstract: 1,200,389. Automatic temperature control systems. TEXAS INSTRUMENTS Inc. Dec.21, 1967 [May 24, 1967], No.58181/67. Heading G3R. A thermistor responsive to the temperature in a zone controls the flow of a fluid through an electro-thermally actuated valve, the thermistor having a biasing heater energizable independently of the zone temperature, which adjusts the set temperature. The valve may control fluid fuel, gaseous refringerant, a liquid coolant. The thermistor TH1 progressively controls the heater 49 of a thermal actuator through a transistor Q1 the temperature set point being varied by the heater element H1 manually controlled through a resistor R3. The voltage is stabilized by a zene diode Z1. In an alternative arrangement, the thermistor (TH3) Fig.4 (not shown) may be directly connected to the element (49A). A self heating NTC thermistor (TH2) may stabilize the voltage and ambient temperature variations. To improve the loop gain, the thermistor may have a negative resistance portion and part of its characteristic with a sharp transition point. A temperature dependent element such as an NTC thermistor may be used for the element thus producing regenerative feedback. In a further embodiment an NTC thermistor (TH4) Fig.6 (not shown) shunts the element (49B) through an impedance matching transformer (T1). The arrangement may be adapted to control a gas fired hot air furnace.
Patent GB-1247532-A (GB)
Title: Peripheral grinding wheel and method and apparatus for making the same
IPC: B24D18/00
Filed: 1968-12-09
Abstract: 1,247,532. Moulding grinding wheels. SUPER-CUT Inc. 9 Dec., 1968 [13 Dec., 1967], No. 58321/68. Heading B5A. [Also in Division B3] A method of making an internally reinforced continuous annular grinding member comprises the steps of providing an outer mould wall 50 having a continuous annular inner surface, providing an inner ring-like metal mould wall 16 having a continuous outer annular surface of less overall diameter than the overall diameter of the inner surface of the wall 50, positioning the mould walls so that said inner and outer surfaces are concentric and define therebetween an annular mould cavity 60, filling the cavity with a mixture of fusible powder and abrasive particles, creating an atmosphere of heat in the vicinity of the mould cavity to heat the mixture and the mould wall 16, and applying outward radial pressure to the wall 16 to expand it uniformly and by a stretching operation increase its circumference, thus compressing the mixture in the cavity 60, fusing the powder, and heat bonding the latter to the outer surface of the wall 16. Apparatus described for carrying out the method includes a pair of cam rings 22, 24 having frusto-conical surfaces 26, 28 which engage co-operating surfaces on the inside of the mould wall 16 so that when the cam rings 22, 24 are urged towards each other by a press 52, 54 the said radial pressure is applied to the wall 16. The heat is applied to the powder mixture and wall 16 by a gas burner 64. The wall 16 may be of steel and the cam rings 22, 24 may be of metal, e.g. steel, so that after the insertion of solder or brazing material between the cam rings and the wall 16 and the urging together of the cam rings the cam rings are bonded to each other and to the wall 16 to form a three-part hub for the grinding member. Alternatively the wall 50 and cam rings 22, 24 are of graphite and the cam rings do not bond to the wall 16. The cam rings may include radial flanges 36 which apply lateral pressure to the mixture in the cavity 60. The inner surface of the wall 50 may be planar, as shown, concave, or convex in section. The fusible powder may be metal or vitreous powder, and the abrasive particles may be of diamond, tungsten carbide, silicon carbide, or fused alumina.
Patent GB-1452277-A (GB)
Title: Walking aids
IPC: A45B7/00
Filed: 1972-12-18
Abstract: 1452277 Walking sticks ZIMMER  ORTHOPAEDIC Ltd 18 Dec 1973 [18 Dec 1972]  58402/72 Heading A4P [Also in Division A5] A walking stick comprises cylindrical tubes 1 and 2, tube 2 being telescopically mounted coaxially in tube 1, a pin 5, which is insertable in any selected pair of a row of pairs of diametrically opposed aligned holes 4 in tube 2 and arranged to engage in diametrically opposed recesses 7 formed in the lower end of tubel to permit substantial displacement of tube 2 outwardly with respect to tube 1, and a sleeve 8 having an internal thread which is screwed on to an external thread 6 on tube 1, the lower end of said sleeve having formed thereon an inward flange 9, which abuts from below ends of the pin projecting from tube 2 so firmly connecting tubes I and 2 together. The pin is of a length greater than the external diameter of tube 2, but no greater than that of tube 1. A hand grip 3 is provided on tube 1.
Patent GB-1408797-A (GB)
Title: Safety closures for containers
IPC: B65D47/12
Filed: 1972-12-18
Abstract: 1408797 Safety closures A COSTA 18 Dec 1972 [2 Aug 1972] 58437/72 Heading B8T A safety closure has a base element 3 which is pushed on to the neck 2 of a container and is held non-rotationally by ribs 13 and 15 and interlocking projections 16 and recesses 17. A screw cap 6 with tooth-like ribs 24 and a base 19 with grooves 25 engages the screw thread 23 on the base element.  Resilient projections 31 on the base 28 disposed opposite bosses 32 on the base 19 displace the cover cap 5 axially from the screw cap 6 so that ribs 27 and 29 do not engage the ribs 24 and grooves 25 respectively. A tear-off strip 33 connected to the cover cap 5 has a pull tab 37 and projections 34 that engage in recesses 35 of the base element 3. To open the container the tear-off strip is removed and a downward axial pressure is applied to the cover cap 5 to overcome the resilient projections 31. The complementay locking means 27 and 29 on the cover cap 5 engage members 24 and 25 on the screw cap so that the latter may be unscrewed by the application of a torque to the cover cap. In a modified version the resilient spacing device may be one annular ring (31) engaging with one boss (32), Figs. 8 and 9 (not shown), and the interengaging ribs (27) and (24) may be of rectangular cross-section. Other modified versions have ribs (39) and (40), Figs. 10-13 (not shown), that engage in the clockwise direction when the closure is put on, but ride past each other when the cover cap 5 is turned counter-clockwise. In other versions ribs (43) and (44), Figs. 14 and 15 (not shown), similarly engage in the clockwise directionfor applying the closure.
Patent GB-1249361-A (GB)
Title: Hairpiece and method of manufacture thereof
Inventor: BONHAM DAVID CARSON
IPC: A41G3/00
Filed: 1968-12-09
Abstract: 1,249,361. Hairpieces. D. C. BONHAM. Dec.9, 1968, No.58458/68. Heading A4V. A hairpiece comprises a scalp base having a base layer of silicone rubber covered with at least one layer of silicone rubber impregnated and covered fabric mesh material, such as nylon mesh, bonded thereto, and hairs extending into and through at least a portion of the scalp base, the hairs being adhesively anchored to the scalp base by, for example, bonding a further layer of silicone rubber covered and impregnated mesh to the interior surface of the base layer after coating ends of the hairs projecting under the scalp base with adhesive. The mesh layers may be either impregnated and covered before application to the base layer or the base layer may be coated with a layer of silicone rubber and a layer of mesh applied thereto and the rubber worked into the interstices of the mesh whilst still wet. The hairs are inserted by a reciprocating blunt knife through the scalp base and into a block of elastomeric material on which the scalp base is temporarily supported. After insertion of the hairs the scalp base is removed from the elastomeric block which pulls the hairs further through the scalp base, the hairs then being trimmed to a uniform length on the underside of the scalp base and then anchored thereto.
Patent GB-1282055-A (GB)
Title: Display cells
Inventor: NGO DINH-TUAN
IPC: G09G3/32
Filed: 1969-12-02
Abstract: 1282055 Matrix displays WESTERN ELECTRIC CO Inc 2 Dec 1969 [5 Dec 1968] 58683/69 Heading G5C [Also in Division C4] A two-terminal display cell 100 comprises a bilateral breakdown switch 112 having a conducting state when a threshold voltage is exceeded, charge storage means 113 and a light emitting semi-conductor device 116, connected in series. The switch and storage means provide a " memory " for the cell which remains on or off after the application of a write or erase signal. The switch is a PNPN breakdown diode or of the oronic threshold type. The light emitting device 116 is a GaAsP or GaP electroluminescent diode. The storage means comprise a capacitor 113 when a diode 114 is connected in parallel with the diode 116 or a charge storage diode poled opposite to the diode 116. In a matrix array an A.C. bias from a source 20 is applied across all the cells via pulse transformer drivers 30, 40, the bias being less than the switch threshold voltage so that no current flows and the capacitor 113 is uncharged. The application to selected row and column conductors of coincident signals in the form of write pulses, near the peak bias voltage causes the switch to conduct, allowing current to flow briefly to charge capacitor 113 and energize diode 116. During the following negative half-cycle the charge on capacitor 113 adds to the bias voltage and again causes switch 112 to conduct allowing current to flow through diode 114 which may also be electroluminescent. Diode 116 continues to emit light until an erase pulse sufficient to turn switch 112 on when the bias voltage is near zero. This discharges the capacitor 113 and since the bias voltage is near zero no charge builds up. Images may be formed manually using a low voltage pen to render switches 112 conducting.
Patent GB-1209800-A (GB)
Title: Spring-stripper for use with punches, dies and the like
IPC: B21D45/00
Filed: 1968-12-11
Abstract: 1,209,800. Strippers. KAUFMANN TOOL & ENG. CORP. 11 Dec., 1968 [21Dec., 1967], No. 58970/68. Heading B3W. A spring stripper for assembly with, e.g. a punch 20 or for independent use comprises a sleeve 24 of synthetic rubber-like material and a cap 28 of material similar but of greater hardness than that of the sleeve.. The preferred range of hardness for the sleeve is 75-98 Shore A and for the cap 100-130 Shore A. Reinforcing glass fibres are substantially uniformly distributed in the cap. The sleeve forms a friction fit with the punch shank 20b and the cap is a press-fit with the sleeve. The edge 28c is continuously or intermittently chamfered to facilitate the press-fit and centering of the parts. The cap is preferably formed with a notch in the inner face of the part 28a for guiding a drill used to form the hole 30. Alternatively the hole is formed by piercing, or machining. The cap and sleeve are assembled in a vice, or a press or by means of a stroke of a ram or punch with which it is associated. When the stripper is used independently of a punch the cap is imperforate, Fig. 5. A second cap, perforated for passage of a locating pin such as 34, may be mounted on the other end of the sleeve.
Patent GB-1191778-A (GB)
Title: A New Chlorofluoroether with Anaesthetic Properties, and its Preparation
Inventor: CROIX LOUISE S
IPC: C07C43/12
Filed: 1968-12-12
Abstract: 1,191,778. Inhalation anaesthetic. AIR REDUCTION CO. Inc. 12 Dec., 1968 [15 Dec., 1967; 22 May, '1968), No.59202/68. Heading A5B. ['Also in Division C2]. An inhalant anaesthetic composition comprises the compound of formula CF 3 CHCl- O-OHF 2 , and oxygen.
Patent GB-1364935-A (GB)
Title: Railway vehicle truck
IPC: B61F5/32
Filed: 1971-12-29
Abstract: 1364935 Railway vehicle track BUDD CO 29 Dec 1971 [28 Dec 1970] 60509/71 Heading B7L [Also in Division F2] A railway vehicle truck comprises two tubular side frame members 20 mounted on wheel-axle units 27 by a universal movement elastomeric spring support assembly comprising uniformly circumferentially spaced elastomeric pads 54 mounted between a ring 51 fast with an outer bearing race 42 of the axle and a housing 46, 47 secured to the frame member. The axles are provided with roller bearings 43 and inboardmounted disc brakes 28, 29. Tie-rods 60 mounted with universal movement between the frame members 20 allow vertical and longitudinal motion of the members but maintain the members at a fixed separation. Spider parts 21 secured to the frame members are loosely secured to a depending stub journal 22 of a bolster 23. Lateral stabilizing tie-bars 35 having universal couplings 36 to the bolster and controllable fluid spring couplings 38 with a vehicle body mounted thereon are provided, as are longitudinal stabilizing tie-bars 31 and vertical and lateral movement-damping shockabsorbers 33 and 34. The elastomeric pads 54 are located by studs 52 which pass through enlarged holes in the pads and are bonded to inner and outer arcuate plates 55 and 56. The pads are pre-compressed partly by bands 57 and partly by clamping together the housing parts 46 and 47.
Patent GB-1360789-A (GB)
Title: Tents and like portrable buildings
IPC: E04H15/64
Filed: 1971-12-09
Abstract: 1360789 Tents DRIX PLASTICS Ltd 9 Dec 1971 [22 Dec 1970] 60894/70. Heading E1A In a tent comprising a frame of spigot-andsocket construction the cover 2 is secured thereto by passing it underneath the lower frame member 11 to form a pocket containing ballast container which may take the form of water filled plastics tubes 5; the edge 13 of the cover being secured to a flange 14 on the cover by cords 15 laced through eyelets therein. The frame comprises arch-shaped subframes 6 which consist of members 7 of spigot-and-socket construction, the frames 6 being interconnected to-gether by members 11, 16 and 18 for details of which the Specification should be referred to. The cover 1 and end covers 2, 3 are made of translucent polyvinyl chloride and the frame of galvanised steel.