baber/WOPTO huggingface dataset:
Patent GB-1187570-A (GB)
Title: New Phenols and Coumaran Derivatives and process for their preparation
IPC: C07C39/373
Filed: 1966-12-29
Abstract: 1,187,570. Diphenols; coumaran derivatives. UGINE KUHLMAN. 29 Dec., 1966 [29 Dec., 1965; 17 May, 1966], No. 58089/66. Heading C2C. The invention relates to products of any of the formulµ in which X, Y and Z denote hydrogen atoms or substituents. The products are all obtainable from starting materials of the formula provided that at least one o-position or the pposition in each benzene ring is unsubstituted. The coumaran derivatives of Formula I are obtained by heating the starting material to 150-450‹ C. alone or in a neutral solvent. The diphenols of Formula II are obtained by heating the starting material to the same temperature in a basic organic compound, a number of which are specified. The diphenols of Formula III are obtained in the same way as compounds of Formula II, but from starting materials carrying substituents in each o-position but having a free p-position in each benzene ring. Examples are given, in one of which 1,3- bis - (2,5 - dichloro - phenoxy) - 2 - methylene propane is used as the starting material.
Patent GB-1387115-A (GB)
Title: De-fibrillating equipment
IPC: A61N1/39
Filed: 1970-12-08
Abstract: 1387115 Defibrillators STOKE-ON-TRENT LORD MAYOR ALDERMAN & CITIZENS OF 6 March 1972 [3 Dec 1970] 58132/70 Heading A5R ALUCKMAN & A defibrillator comprises capacitors C connected with diodes in a Cockroft-Walton type circuit which is chargeable from a mains supply via a current limiting resistor R c , and means to disconnect the capacitors from the supply on attainment of a predetermined charge selected by a switch 5. on closing switches s1, s2 and pressing a "charge" button a self-locking relay. A is energised closing contacts a1, a2 to charge the capacitors C via normally-closed contacts b 1 , b 2  with a zero diode breaks down operating a schmitt trigger, T 2 , T 3  turning on transistor T 4  to energise relay B to open contacts b 1 , b 2  thereby isolating the capacitors from the mains, energising a red indicator light N 2 , and setting up a circuit through a relay D which relay is energised on depressing a "de-fib" button to close contacts d 1 , d 2  and connect the capacitors C to the patient via leads X, Y. The "de-fib" button also energises relay C to close contact c 1  to thereby hold relay B energised and keep contacts b 1 , b 2  open and thus keep the capacitors isolated from the mains. When energised, relay C also opens contact c 2  to de-energise relay A, open contacts a 1 , a 2  and extinguish an amber light N 1 . A contact d 3  opens when relay D is energised and acts as a "fail-safe" interllock preventing energisation of relay A, so that if contacts d 1 , d 2  stick closed the capacitors cannot be recharged. When the main switch s 1 , s 2  is opened relay E is deenergised and contact e 1  closes to discharge the capacitors C through resistor R d .
Patent GB-1377240-A (GB)
Title: Digital nuclear gyroscopic instrumentation and digital phase locked  loop therefor
IPC: G01C19/60
Filed: 1972-12-19
Abstract: 1377240 Digital phase-lock loop; nuclear magnetic resonance gyrometer SINGER CO 19 Dec 1972 58534/72 Heading G4H [Also in Division H3]  A nuclear magnetic resonance spin oscillator 10 includes two dissimilar resonance species having Larmor frequencies f 1  and f 2 , and the f 1  resonance is synchronized with a 2<SP>n</SP>f 1  crystal oscillator 12 by a digital phase-lock loop comprising an n stage binary counter 13 counting pulses from 12 to produce an n bit parallel output varying cyclically at f 1  which is strobed into a register 16 by strobe pulses derived from the nuclear magnetic resonance signals at f 1 , the output of the register 16 being converted at 18 to analogue and integrated and used to control the strength of the polarizing magnetic field of the spin oscillator 10. As shown, an N.M.R. gyrometer comprises two N.M.R. spin oscillators 10, 11 with equal and opposite polarizing magnetic fields and each containing two different mercury isotopes having Larmor frequencies 1 kHz and 396 Hz. Spin oscillator 10 is phase locked to the crystal oscillator 12 by the loop 14, 16, 17. Pulses from a second crystal oscillator 28 are augmented or depleted in a logic circuit 29 under the control of a second digital phase-lock loop 26, 32, 29 to produce an n bit parallel output from a second counter 31 varying cyclically at the 369 Hz of spin oscillator 10. The second N.M.R. spin oscillator 11 is phase-locked to the first spin oscillator 10 by a loop responsive to the difference, formed at 49, of the 1 kHz and 369 Hz phase errors to control the polarizing magnetic field of spin oscillator 11, the sum of the phase errors being averaged at 58 to provide an output indicative of rate of turn relative to inertial space.
Patent GB-1199389-A (GB)
Title: A Lyophilisation Installation.
IPC: F26B5/06
Filed: 1968-12-10
Abstract: 1,199,389. Frecze drying. SOC. D'ETUDE ET D'EXPLOITATION DE PROCEDES pour L'INDUSTRIE ALIMENTAIRE SEPIAL 10 Dec., 1968 [21 Feb., 1968], No. 58737/68. Heading F4G. A freeze drying horizontal cylindrical vacuum chamber contains heating plates 17 mounted on cars 8, 9 and a condensation unit which comprises two symmetrical groups 4, 5 of vertical condensation plates 6 positioned on each side of a vertical diametral plane of the chamber, each plate being individually movable about a vertical axis. Each group of plates 6 may be divided into sections and the angle of inclination of the plates may be different in different sections. Each plate 6 has the shape of a truncated sector of a circle and comprises a number of compartments 25 communicating through openings 26 to provide a sinuous flow path for the refrigerant. Each plate 6 has a shaft end 29 which engages in a notch 37 on bar 35 mounted on plane surface 33 and a bush or disc bearing on plane surface 32 and engaging in notch 36 in bar 34. The condensation unit is thermally insulated from the wall of the vacuum chamber and the heating plates by respectively, metal sheets and metal screens, the screens comprising tiltable slats. Vacuum is maintained in the chamber by means of pipes 41 connected to a pump (not shown). The material to be dried is carried on trays 11 on cars 7, the trays 11 meshing with the heating plates 17.
Patent GB-1410420-A (GB)
Title: Preparation of 1,2-dichloroethane
IPC: C07C19/045
Filed: 1973-12-21
Abstract: 1410420 Production of 1,2-dichloroethane RHONE-PROGIL SA 21 Dec 1973 [27 Dec 1972] 59426/73 Heading C2C A process for the production of 1,2-dichloroethane comprises reacting chlorine and ethylene at a temperature of from 20 to 80 C., protected from light radiation, in liquid 1,2-dichloroethane in the presence of a Lewis acid catalyst, e.g. ferric chloride, wherein all the chlorine used and an amount of ethylene equal to from 90 to 100 molar per cent by weight of the total amount of chlorine, are continuously introduced to a first zone and the resulting products and the remaining ethylene are continuously introduced in counter-flow in a second zone to a flow of liquid 1,2-dichloroethane, the two reaction zones being agitated and homogeneous and situated within a single reaction vessel, the total amount of ethylene introduced not being in excess of 102 molar per cent of the total amount of chlorine.
Patent GB-1334030-A (GB)
Title: Solid state sequential switching device
IPC: H01L27/00
Filed: 1971-12-22
Abstract: 1334030 Semi-conductor switching devices THOMSON-CSF 22 Dec 1971 [23 Dec 1970] 59693/71 Heading H1K A device for switching the channels of a multichannel circuit comprises diodes inserted in said channels and each capable of being switched from a high to a low resistance condition above a certain threshold voltage, emitting photons when conducting and having its threshold voltage lowered by irradiation with such photons, the diodes being arranged in a line so that photons from any diode can reach the immediately adjacent diodes but none of the others. Typically the diodes are formed in a common bar of monocrystalline gallium arsenide doped with oxygen, chromium, iron or zinc to a semiinsulating state, by depositing opposed pairs of electrodes on its faces. The electrodes on one face are commoned while those on the other are alternately connected into three groups (Fig. 2) via conductive tracks on insulating coatings. In operation identical but differently phased trains of pulses of magnitude intermediate the non - illuminated and illuminated threshold valves are fed to the three groups causing conduction of the diodes in sequence. Conduction of the first diode is initiated by application of a pulse exceeding the non-illuminated threshold to an associated trigger diode. The rectifiers d shown in Fig. 2 function to prevent parallel connection of interconnected diodes into the switched channel.
Patent GB-1283250-A (GB)
Title: Polyurethane foams
Inventor: ALLEN WILLIAM THOMAS
IPC: C08J9/36
Filed: 1969-12-10
Abstract: 1283250 Leather substitutes DUNLOP HOLDINGS Ltd 27 Oct 1970 [7 Nov 1969 10 Dec 1969] 54618/69 and 60210/69 Heading B5N [Also in Divisions C3 and D1] Laminates may be produced from permanently compressed sheets of polyurethane foam derived from an organic polyisocyanate and a polyester polyol having pendant alkyl groups on the polyester backbone chain (see Division C3) and the same or other cellular sheet materials and/or with textile fibrous sheet materials, non-cellular rubbers and plastics. The fibrous sheet material may comprise staple and/or continuous fibres which may or not be crimped, may be woven, knitted or non-woven and may be of fibres of polypropylene, nylon, poly- (ethylene terephthalate), glass, cotton, wool or rayon and if desired may be impregnated with an elastomer latex binder. Bonding may be achieved by means of an adhesive composition, by melting the foam surface or when a fibrous sheet is bonded, by needling. The polyurethane foam sheet may be formed into a compressed condition prior to, during or after bonding. The laminate may be coated for example with a polyurethane, polyacrylate of nitrocellulose, usually on the compressed polyurethane foam face. In examples (a) strips of polyurethane foam were welded together in a platten press and (b) a polyurethane foam sheet was reticulated and compressed, coated with a polyurethane based adhesive in a discontinuous manner, laminated to a latex-impregnated nylon web and the resulting laminate coated on its compressed polyurethane foam face with a polyacrylate layer and a nitrocellulose layer, which layers had been formed on a release paper before being brought into contact with the foam surface.
Patent GB-1306410-A (GB)
Title: Stress relievable steel weld deposit
IPC: B23K35/30
Filed: 1970-12-18
Abstract: 1306410 Ferrous alloys TELEDYNE Inc 18 Dec 1970 [30 Dec 1969] 60342/70 Heading C7A [Also in Division B3] A weld deposit comprises: C 0À05 - 0À13 Mn 0À25 - 09 Si 0À2 - 0À7 Cr 0À2 - 2À0 Ni 2À0 - 4À5 Mo 0À2 - 1À2 P up to 0À02 S up to 0À02 and the balance Fe. The weld retains both tensile strength and toughness after being stress relieved by soaking at 1025F for 16 hours and then cooling at 200 F per hour. The weld can be made using a low hydrogen line-fluoride coated electrode, 45-80% of which is a mild steel core the remainder being a coating containing all the alloying metals. The coating comprises up to 30% iron and alloy metal powder, 2-7% deoxidizer metal powder, 4-15% metal fluoride, 5-15% alkaline earth carbonate, up to 10% slag builder and modifier and 0À5-8% inorganic binder material.
Patent GB-1241860-A (GB)
Title: A control system wherein use is made of electric signals having a single frequency
Inventor: FENOCCHIO FRANCESCO
IPC: G08C19/30
Filed: 1968-12-31
Abstract: 1,241,860. Electric selective signalling. F. FENNOCHIO. 31 Dec., 1968 [4 Jan., 1968], No. 61812/68. Heading G4H. Three separate control signals are provided by using positive or negative half-cycles or the whole of an A.C. wave-form as shown in Fig. 1. The invention may be applied to a magnetic recorder, the control signals being recorded on the tape under the control of keys K1, K2 and K3. Key K1 applies a signal to the start circuit AV to start the recorder. It also energises relay S1 closing a contact to connect the output of rectifier R1 to the input AR of the second head. The A.C. wave-form is produced by oscillator O connected to rectifiers R1 and R2. When relay S1 is operated the positive half-wave is recorded together with the input from E. Similarly key K2 operates the stop relay S2 to connect rectifier R2 to the recording circuit and record the negative half wave. Some other control is effected by key K3 which also serves to record the whole waveform. During playback, the signal is applied through oppositely poled rectifiers to filters which respond respectively to the positive and negative half-waves. The whole wave signal causes both to respond and a double coil relay then actuates to open contacts normally connecting the filters to corresponding relays. The three corresponding controls are effected by the three relays. Alternatively the signals may be transmitted to a remote point, by wire or radio.
Patent GB-2001386-A (GB)
Title: Pivot arrangements for pitot tubes
IPC: G01P5/16
Filed: 1978-07-25
Abstract: A head for sensing fluid flow pressure of the kind comprising a swivelling pitot tube wherein the pitot tube is mounted on a hinge joint through which fluid pressure at the pitot tube and the angular position of the pitot tube are transmitted without the use of dynamic seals. The fluid pressure is transmitted via a passageway extending by way of the hollow pivot pin (31) on one member (25) of the hinge joint to which the pitot tube is fixed, a hollow shaft (33) in the other hinge joint member (23) and a flexible tubular connection (41) between the pivot pin (31) and shaft (33), the shaft (33) being coupled to the pivot pin (33) so as to rotate therewith and reduce relative rotation between the ends of the flexible connection (41). The angular position of the shaft (33) indicates the angular position of the pitot tube. The head finds especial application in helicopter airspeed measuring apparatus. <IMAGE>
Patent GB-2028145-A (GB)
Title: Road-crossing game
IPC: A63F3/00
Filed: 1978-08-25
Abstract: A board game simulating a pedestrian crossing a road having traffic in which the board includes circular rotatable rings on which are drawn vehicles forming the traffic. Counters represent pedestrians who have to cross the roads several times to win the game. Movement of the traffic rings causes pelican crossing signs to change and is controlled by two dice each marked 1,1,2,2,3,3 and cards. <IMAGE>
Patent GB-2005591-A (GB)
Title: Polyester flat yarns
IPC: D01F6/62
Filed: 1978-09-11
Abstract: New poly(ethylene terephthalate) flat yarns and tows having physical properties and dyeability more akin to cellulose acetate than to conventional poly(ethylene terephthalate) flat yarns are prepared directly by spinning at speeds of about 4000 meters/minute. Among the useful physical properties are a modulus of 30 to 65, which is relatively unaffected by boiling, low boil-off shrinkage, no need for heat setting, low shrinkage tension, large crystal size, and low amorphous orientation which is measured by a value termed "amorphous modulus." The flat yarns may be used, e.g. in textile fabrics, without drawing, and may be modified, e.g. by air-jet texturing. The tows may be converted into staple fiber. <IMAGE>
Patent GB-2004224-A (GB)
Title: Digitally controlled compound tool slide with rapid approach/retraction
IPC: B23G3/08
Filed: 1978-09-13
Abstract: In a thread-cutting machine comprising a longitudinal carriage whose reciprocal movements are controlled by a first digitally controlled motor and a transverse carriage 7 carrying the tool, whose reciprocal movements are controlled by a second digitally controlled motor 9, the movements of the transverse carriage are provided through the combined action of a screw 10, rotated by the corresponding motor 9 and cooperating with a nut on the longitudinal carriage, and a cam 11 capable of causing a translatory movement of said screw for fast approach and retraction. The cam 11 is axially fixed on the screw 10 and rotates, by action of a friction ring 24 rotating with the screw, cooperating with stationary followers 19 for producing the translation until a stop 29 engages a respective follower, the cam then slipping on the friction ring. End-of-travel blocks control reversal of the longitudinal carriage. The machine is adaptable for conical threads. <IMAGE>
Patent GB-2005304-A (GB)
Title: Copper, nickel, tin, spinodal alloys
IPC: C22C9/06
Filed: 1978-09-27
Abstract: The invention provides an improved Cu-Ni-Sn alloy with a spinodal structure for use in springs, relays or wire connectors. The improved alloy contains at least one additional element selected from Mo, Nb, Ta, V and Fe, and the method of manufacture includes a treatment of annealing quenching and aging. Fig. 1 compares the properties of improved alloys (designated "modified") with those of prior art alloys. The alloy consists of by weight:-   <IMAGE>  where Cu + Ni + Sn is at least 95%. <IMAGE>
Patent GB-2009284-A (GB)
Title: Diamond Drill Core Bits
IPC: E21B10/48
Filed: 1978-11-17
Abstract: A diamond drill coring bit has an annular crown 6 formed from radially extending composite segments 18 spaced apart circumferentially by a circumferential spacer material 24, all integrally bonded together. Each composite segment consists of diamond impregnated segments 20 spaced radially from each other by a radial spacer material 22. The diamond impregnated segments 20 have greater abrasion resistance than the radial spacer material 22 such that the latter will wear faster than the former. The radial spacer material 22 likewise has greater abrasion resistance than that of the circumferential spacer material 24 such that the latter will wear faster but not so fast as prematurely to expose the composite segments 18. The circumferential spacer material 24 has good thermal conductivity to conduct heat from the composite segments 18, and substantial ductility to absorb drilling shocks. <IMAGE>
Patent GB-2008504-A (GB)
Title: Pneumatic Tire
IPC: B60C15/02
Filed: 1978-11-21
Abstract: A tubeless pneumatic tire comprises a plurality of radially extending projection or depressions 30 spaced circumferentially about the tire 10, in the lower bead portions of the tire, for preventing the tire from being inflated when the tire is mounted on a wheel having a rim 13 (Fig. 4) of a diameter smaller than the rim 12 for which it was designed. With such an undersized rim the toe of the bead does not seal on the bead seat 19, and the projections or depressions prevent an airtight seal between the beads and the rim flanges 15. <IMAGE>
Patent GB-2011143-A (GB)
Title: Liquid-crystal display device
IPC: G02F1/133
Filed: 1978-12-14
Abstract: A liquid crystal display device comprises elements F, each actuable individually through a first and a second electrode, e.g. arranged in two concentric circles, e.g. to indicate minutes and hours: the elements in the two circles are divided into matched equal groups I-VI, VII-XII with a common second electrode g1-6, 7-12 for each group, and first electrodes of radially related elements are interconnected; sets of these radial pairs are further connected by conductors e1-10 running circumferentially alternately within the inner circle and outside the outer. Two groups or inner-outer pairs of groups, each group or pair providing independent display of selected elements, are driven with d.c. or a.c. of opposite sign/phase just below threshold, and element sets are driven at voltages chosen to provide above or below threshold p.d. against the group electrodes according to the selected display. The system can be applied to a twin 7-segment digit display. <IMAGE>
Patent GB-2020176-A (GB)
Title: Dismantable support for clothes hangers
IPC: A47F7/24
Filed: 1978-12-20
Abstract: A dismantable support for clothes hangers comprising two curved tubular members (8) supported on two uprights, each upright consisting of two telescopically associable components (1, 2) which are adjustable in height relatively to one another. <IMAGE>
Patent GB-2017794-A (GB)
Title: Offshore Structure
IPC: E02B17/00
Filed: 1979-01-24
Abstract: An offshore structure, such as a drilling platform, which is able to withstand the ice forces imposed thereon by impinging ice sheets and other larger masses of ice is provided with an upper conical portion 6 coaxially positioned relative to a lower conical portion 4. The surfaces forming the walls of both the upper and lower conical portions are inclined at an angle to the horizontal to receive the ice masses moving into contact with the structure. The angle of inclination from the horizontal of the surface of the upper conical portion is greater than the angle of inclination of the surface of the lower conical portion and the maximum cross-sectional diameter of the upper conical portion is no greater than that at the top of the lower conical portion, i.e. the minimum cross-sectional diameter of the lower portion. <IMAGE>
Patent GB-2041782-A (GB)
Title: Coated chipboard panels
IPC: E04B7/20
Filed: 1979-02-03
Abstract: Chipboard roofing panel uses a water-resistant bond for the basic chipboard panel and a coating of bitumen on one face and all the edges. The coating is applied by feeding the panels 11 beneath a hopper 20 (Fig. 1), spreading the coating using roller 21 so that it overflows the edges of each panel, the coating on the edges being spread, by blades 22 (Figs. 2 and 3), and temporarily separating the panels by applying reverse drive to drive rollers 15 so that the end edges are also coated. <IMAGE>
Patent GB-2016246-A (GB)
Title: A device for monitoring the quality of a synchronous digital transmission signal
IPC: H04L25/04
Filed: 1979-03-05
Abstract: A circuit for monitoring the quality of a digital base band transmission signal having a constant unit time interval, includes a sign coincidence auto- correlator (4,5), which correlates the polarities of two versions of the received signal delayed in relation to each other by (3), an integer multiple of the unit time interval T. The input signal is limited at 2 to provide logic levels 1 or 0 and the combining or correlating device may be an Exclusive OR circuit or a multiplier. The combined output is integrated at 6 with a time constant long compared to the time interval T. The circuit qualitatively measures the differences between a reference time interval and the time interval which separates the consecutive zeros of the input signal and provides an indication analogous to that provided by the eye pattern. <IMAGE>
Patent GB-2031288-A (GB)
Title: Unit for displaying a three- dimensional scene
IPC: G09F9/00
Filed: 1979-04-19
Abstract: The unit consists of a box 1 with a viewing opening 2 in the front panel. The top and bottom internal panels each contain rails or guides 4 which support picture cards vertically, the cards having cut-outs or transparent areas arranged in such a way that when they are inserted in their correct positions from front to back, a diorama or three-dimensional, multiplane composite picture of the subject matter is provided. <IMAGE>
Patent GB-2046602-A (GB)
Title: A motor for a toy car
IPC: A63H29/22
Filed: 1979-04-20
Abstract: In a toy car, a motor 3 is mechanically connected to road wheels 12 so as to rotate the wheels 12 and be rotated thereby. The motor 3 is electrically connected to terminals 4, 5 for receiving electrical power, for instance from a battery. The motor 3 has rotational states of equilibrium by having a commutator with two conductive portions and two insulated portions, so that it starts to rotate under power when the wheels 12 are rotated by pushing the car along the ground, but stops in one of its equilibrium states when the wheels 12 are stopped, such as when the car runs into an obstruction. <IMAGE>