baber/WOPTO huggingface dataset:
Patent GB-1011881-A (GB)
Title: Structural assemblies for windows, walls and the like
IPC: E04D3/08
Filed: 1960-12-09
Abstract: 1,011,881. Glazing windows, walls &c. WILLIAMS & WILLIAMS Ltd. March 8, 1962 [Dec. 9, 1960], No. 42566/60, Heading E1R. Panels 16 of glass or other sheet material are joined and supported over a girder 22 by a flexible, resilient sealing strip 1 of polythene or natural or synthetic rubber, which has longitudinal side channels with grooved top surfaces, for receiving the panels, and a longitudinal upper channel 5 into which is forced a wedge or other shaped key for forcing the flaps 6 into contact with the panels. In Fig. 3 the key is kept in position by bolts passing into the web of the girder, and cover strips or brackets 25 are provided round the interior portion of the sealing strip and held in place by lateral bolts 27. In Fig. 6, clamping strips 38, of stainless steel, are held to the strip by bolts 35 passing through the bulbous key 30, and the sealing strip completely encloses the girder. Other examples include variations of the above, with sealing strips curtailed so as just to grip the ends of the girder flanges, a bulbous sealing strip with a top flange overlapping the sealing strip (Fig. 7, not shown) in which example the fixing bolts pass only through the base portion of the sealing strip, and not the key; an example with a clamping strip but no key (Fig. 8, not shown), and an example with a box girder and only one groove along the upper surface of each channel, with a similar groove in the lower surface also (Fig. 9, not shown).
Patent GB-1522879-A (GB)
Title: Process for the polymerisation of formaldehyde
IPC: C08G2/08
Filed: 1976-10-14
Abstract: 1522879 Polyoxymethylenes SOC ITALIANA RESINE SIR SpA 14 Oct 1976 [30 Oct 1975] 42754/76 Heading C3P Polyoxymethylene is prepared by polymerization of formaldehyde in a reaction medium comprising an inert liquid organic diluent, a chain transfer agent and a catalyst which is a polylactone having a terminal ionic couple formed from one or more lactones which contain 2 to 13 ring carbon atoms and are unsubstituted or substituted by one or more hydrocarbyl radicals and/or halogen. In the examples the reaction medium comprises heptane or toluene; ethanol, n-propanol or nbutanol and a polylactone formed by polymerization of delta-valerolactone in benzene using sodium naphthyl catalyst, epsiloncaprolactone in toluene or heptane using Licaprolactam, n- or sec-butyl lithium catalyst or of dimethylisopropylidene beta - propiolactone using n-butyl zinc catalyst and the product polyoxymethylene is stabilized by esterification with acetic anhydride or etherification using a mixture of triethyl orthoformate dimethylacetamide and ethyl sulphate.
Patent GB-950105-A (GB)
Title: Multi-pole switching unit with snap contacts
IPC: H01H5/18
Filed: 1961-12-06
Abstract: 950,105. Snap-action switches; retractive switches. G. KRONE. Dec. 6, 1961 [Dec. 20, 1960], No. 43659/61. Heading H2B. A multiple snap-action switch comprises several identical contact sets 12a, 12b, 12c assembled in spaced parallel array between the two parts of an insulating housing 13a, 13b, each set comprising at least one fixed contact 11; a movable contact spring 9a; an operating spring 9b and a semi-circular snap spring 10, and all sets having a common operating member 19a which is supported on a spring 22. The switch may be retractive or stable in both positions according to whether a strong or very weak spring 22 is employed. The contact and operating springs 9a, 9b are formed as parts of a single leaf spring 9 and this spring 9 and each fixed contact member carry spring arms 15, 16 for engagement with printed circuit elements 25 on a base board 26 on which the housing is mounted. A dust cover 23 forming part of the upper housing member 13b may be removable or transparent for inspection purposes.
Patent GB-438356-A (GB)
IPC: G03C7/14
Abstract: 438,356. Reproducing lenticular picture films. OPTICOLOR AKT.-GES., Glarus, Switzerland. May 8, 1934, No. 13906. Addition to 421,084 and 435,859. [A Specification was laid open to inspection under Sect. 91 of the Acts, Jan. 26, 1935.] [Class 98 (ii)] The arrangement described in Specification 435,859, is modified by so arranging the films that the plane in which lie the lines joining the centres of the film gates to the centres of the images of the objective seen from the films, forms an angle other than a right angle with the direction of the lenticular elements on the films. If films having lenticular elements of different relative aperture are used, the angle between the direction of the lenticular elements and the direction of apparent displacement of the objective must be such that the component of the apparent displacement at right angles to the direction of the lenticular elements divided by the distance of the film from the objective is equal to the relative aperture of the lenticular elements. The images of the lenticular elements of the original film may cross the lenticular elements of the copy film at a large angle, the film gates being conveniently inclined to the optical axis of the objective. The copying may be effected by the apparatus of Fig. 1 in which the film 3 is copied on the film 4 by means of the objective 7, fixed reflectors 6, 8 and oscillating angular mirrors 5, 9. Figs. 2, 3 and 5 show examples of the possible directions of the films 3, 4, the line 13 indicating the direction of the plane in which the apparent movement of the objective, seen from the films, takes place.
Patent GB-1432558-A (GB)
Title: Graticule
IPC: G02F1/13
Filed: 1972-09-22
Abstract: 1432558 Controlling light DEFENCE SECRETARY OF STATE FOR 17 Oct 1973 [22 Sept 1972] 43894/72 Heading H4F A graticule in an optical system comprises a liquid crystal film between two parallel transparent plates each supporting an array of parallel electrodes, the arrays being inclined to each other. A cross is displayed when potential is applied to an electrode in each array. When the potential applied to both electrodes is of the same polarity the centre point remains clear. The graticule may be mounted in the image plane of the system or the cross is projected into this plane by a half silvered mirror. In the latter case the cross should be clear against a dark background, this is achieved using polarizing plates on either side of a liquid crystal which exhibits twisted nematic scattering. The display is erased by a h.f. signal.
Patent GB-1082671-A (GB)
Title: Improvements relating to partitions, walls and the like
IPC: E04B2/74
Filed: 1962-11-21
Abstract: 1,082,671. Panelled structures. K. V. SLEE. Feb. 20, 1964 [Nov. 21. 1962], No. 44066/62. Heading E1W. In a wall panel assembly which, resists ingress of dust panels 4 Fig. 2 have flanges 7 each clamped alongside a flange 7 on an adjacent panel with a resilient sealing strip 9 compressed between them, and with a second air tight seal 58 extending across the joint between adjacent flanges where the flanges are turned away from each other at terminal flanges 57. The clamping means for the flanges 7 may comprise bolts passed through holes in the flanges or may comprise clamps 10. The seal 58 may comprise an adhesive sealing strip stuck on to the terminal flanges 57. A spaced skin formed by flanged panels 19 may be welded to the panels 4 and channel shaped cover strips 21 may be welded to the panels 19 at the joints between them. The space between the skins may be filled with insulating material. The panels may be apertured to receive glazing 33 which is secured within the apertures by resilient gasket strips 35 which also serve to locate frame members 39 and 41 between spaced skins. Corner panels 5, 28, Fig. 1 may be provided to form angle; T- and four-walled junctions. Covering strips which may be separately formed as at 44 Fig. 1, or which may form the sides of a channel may be provided along the top and bottom of the assembly and channel shaped members 49 may be provided to form service ducts along the upper and lower edges. The upper edges of the assembly may be received in an inverted channel shaped capping member.
Patent GB-1205784-A (GB)
Title: Pulse signal synchroniser
IPC: H03L7/113
Filed: 1967-09-28
Abstract: 1,205,784. Automatic Phase control. INTERNATIONAL STANDARD ELECTRIC CORP. 28 Sept., 1967 [17 Oct., 1966], No. 44229/67. Heading H3A. A reference frequency oscillator GH producing an output signal H is phase locked to a signal C, e.g. a pulse code modulated signal by a phase discriminator PD which produces a control signal Vd. If the signal varies outside predetermined limits automatic sweeping is initiated to bring it back into the locking range. The phase discriminator comprises AND gate P1, P2 and assuming the signal C is within the looking range a control voltage is developed across capacitor K1 depending on the phase difference between the two signals. If the signal C drops below the lower limit of the locking range (i.e. Vd too low) a frequency discriminator comprising AND gate P3 develops a voltage Vb which energizes a circuit B. The low control voltage Vd sets this circuit B to its " 0 " state to inhibit gate P2 and thus produce a sweep voltage across capacitor K1 to increase the frequency of oscillator GH. Similarly, if the frequency of C is too high the circuit B is set to its " 1 " state inhibiting gate P1 to initiate a sweep voltage which decreases the frequency of GH.
Patent GB-1445865-A (GB)
Title: Digital communication systems
IPC: H04L1/20
Filed: 1973-09-21
Abstract: 1445865 Data transmission-synchronizing BRITISH AIRCRAFT CORP Ltd 17 Sept 1974 [21 Sept 1973] 44395/73 Heading H4P A digital data receiver comprises a first gate G 1 -G 3  for passing data pulses to subsequent processing circuits, a second gate G 10  through which the data pulses or reference pulses at the data pulse repetition rate are fed to a reset input of a counter C 1  fed with clock pulses from generator X 1  and an arrangement B 1  for latching the gates G 1 -G 3 ; G 10  open at a first count value in a given counter cycle and for releasing the latch at a second count value in the next cycle to close gates G 1 -G 3 , G 10  whereby the gates remain open before and after the expected arrival of a data pulse. A bi-stable B 1  is triggered to one of its two states when an upper or a lower count limit is reached as determined stores R 1  or R 2  and equivalent gates G 7  or G 8 . When a reference pulse is missing for some time, the counter C 1  is periodically recycled to open the first and second gates at the expected time intervals. Further, a counter C2 is allowed to count up in the absence of a reference pulse to a predetermined value to latch a bi-stable B 2  to cause gate G 10  to remain open by enabling a gate G 20 . B 2  is reset by the next reference pulse that appears. The transmitted pulses may be analogue signals formed by continuous modulation of the pulse amplitude.
Patent GB-1019172-A (GB)
Title: Improvements in or relating to fluid operated gear changing or like mechanisms
Inventor: LONGBOTTOM REGINALD
IPC: F15B15/26
Filed: 1963-11-12
Abstract: 1,019,172. Change-speed control. WILLIAM ASQUITH Ltd. Nov. 6, 1964 [Nov. 12, 1963], No. 44608/63. Heading F2D. [Also in Division F1] In a gear changing mechanism in which a piston 17 is movable in a cylinder 10 to positions corresponding to the gear ratios, ports 13-16 in the cylinder are selectively connectible to exhaust through a valve 20 so that on supplying fluid under pressure to the appropriate end of the cylinder the piston is moved until it covers the selected port. Fluid is supplied by a pump 46 through a solenoidoperated valve 36 normally biased to the position shown in which fluid is supplied to the port 34 of a locking cylinder 31 having a piston 32 locking the gear change piston 17. Fluid passes from the cylinder 31 through a port 37 and non-return valves 39, 43 and 40, 44 to either end of the cylinder 10 and through the valves 39, 40 to either side of a shuttle valve 45. To select a gear an appropriate one of the ports 13-16 is opened to exhaust; the pressure drops in the corresponding end of the cylinder 10 and at the corresponding side of the shuttle valve 45 which is shifted to the appropriate end of its valve chamber so that a central port 42 therein is in communication with the opposite (pressurized) end of the cylinder 10. To establish the gear, the valve 36 is actuated by its solenoid so that port 34 of the locking cylinder 31 is opened to exhaust and liquid is supplied through the valve 36 to a port 35 of the cylinder 31 to release the gear change piston 17, and thence liquid is supplied through a port 33 which is uncovered by the locking piston 32 to the port 42 and thence to the end of the cylinder 10 opposite to the exhausted port to shift the piston 17 until it closes this port.
Patent GB-1200686-A (GB)
Title: Agglomerated silica bodies
Inventor: BEAU RAYMOND
IPC: C04B35/14
Filed: 1968-09-19
Abstract: 1,200,686. Agglomerated silica bodies. PRODUITS CHIMIQUES PECHINEY - SAINT - GOBAIN. 19 Sept., 1968 [20 Sept., 1967], No. 44652/68. Heading C1A. Agglomerated SiO 2  bodies are made by a process in which at least part of silica supplied to the agglomeration step is in the form of hydrogel microspheres which have preferably been washed in an alkaline medium. Agglomeration may be carried out by compression, extrusion or in a granulating mill. Binders may be added before or after the agglomeration step and the agglomerated bodies are preferably calcined. The product of the invention may be used in adsorption and catalysis procedures.
Patent GB-915995-A (GB)
Title: Improvements relating to door-locking arrangements for vehicles
IPC: E05B77/46
Filed: 1960-12-30
Abstract: 915,995. Releasable fastenings. DAIMLERBENZ A.G. Dec. 30, 1960 [Dec. 31, 1959], No. 44808/60. Class 44. A locking arrangement for vehicle doors wherein a plurality of doors can be locked and unlocked from one point comprises a switch 8 which when turned first completes circuit 15a to operate bolt 7a on one door and when turned further completes circuits 15b, 15c, 15d to operate bolts on the doors in a predetermined sequence. In a modification, the switch 8 acts only as a distributer which is set as required, the circuit being completed by a switch operated when a door handle is turned slightly. The locks may be operated electrically, pneumatically or hydraulically and may be operated in groups.
Patent GB-1071022-A (GB)
Title: Safety air brake system for automotive vehicles
IPC: B60T17/18
Filed: 1963-11-13
Abstract: 1,071,022. Air braking systems. K. NAKAMUBA. Nov. 13, 1963 [Nov. 13, 1962; Aug. 21, 1963], No. 44846/63. Heading F2F. A safety air brake system for vehicles has separate front and rear braking means 7, 10, an air reservoir 3 having separate chambers A, B connected to the front and rear braking means, a relay valve 2 between chamber B and rear brake 10 operable by a driver's pedal valve 4 connected between chamber A and the front brakes, a safety device including both a piston, normally subjected to pressure on opposing sides to the pressures in the respective chambers, movable to open or close a rear brake vent D1 and a check valve to pass compressed air from the second chamber B to the means 10 when the vent D1 is closed, and a changeover valve 13 operable, by the driver, to equalize the pressures on both sides of the piston when the brake pedal 5 is released, to vent the compressed air remaining in the braking means through the vent D1. Under normal conditions depression of pedal 5 opens valve 4 to allow air in chamber A to actuate the front brake, the air also acting on relay valve 9 which operates to connect chamber B to the rear brakes 10, 11. On pedal release the front brakes vent through passage 4a in valve 4, the rear means exhausting through vent D1 by way of ports 9d, 9c in the relay valve and port C1 in device 12. Failure of air supply in chamber B does not affect the pedal actuation of the front brakes from chamber A as described. On failure of the air supply in chamber A the pressure on the side A1 of the piston of the safety device falls, the piston moving leftwards to allow its tilted valve to seal vent D1 and connect ports B1, C1 to allow air from chamber B to pass to relay valve ports 9c, 9d and apply the rear brakes. Operation of valve 13 to connect both sides of the piston to chamber B returns the piston, closing port B1 and opening vent D1 to release the brakes. Valve 9 and device 12 may be combined in a single body. In another embodiment (Fig.. 6, not shown) the device 12 is duplicated and placed in parallel between chambers A and B, but operative in opposite senses. Failure of supply from either chamber then applies the brakes controlled by the other. The duplicated devices may be combined in a single unit.
Patent GB-1154262-A (GB)
Title: Telephone Subscriber's Instrument
IPC: H04M1/72502
Filed: 1967-10-05
Abstract: 1,154,262. Radio & inductive signalling; substation circuits. INTERNATIONAL STANDARD ELECTRIC CORP. 5 Oct., 1967 [14 Oct., 1966], No. 45390/67. Addition to 1,098,729. Headings H4K, H4L and H4V. In a circuit arrangement for a telephone subscriber's instrument a cordless handset comprises a switch s, Fig. 1, which connects a battery OB, for a transmitter S1 and a receiver E1, when the handset is lifted from the cradle of the instrument body. The handset also comprises an operating key having changeover switches BT1, BT2 the arms of which are connected respectively to the switch s and to a dynamic microphone M. If the operating key is actuated when the handset is lifted the switches BT1, BT2 respectively connect the battery OB via the switch s to the transmitter S1 and the receiver E1, and the microphone M to the transmitter S1. If the operating key is not so actuated an audible attention signal is emitted by the handset or the instrument body, or by both. As described, a tone generator HTG1 is provided in the handset which is connected to the dynamic microphone M and the battery OB when the switch s is operated and the switches BT1, BT2 are not operated. A tone generator HTG2, Fig. 2, and an associated dynamic microphone RK may be provided in the instrument body, power being supplied via a cradle switch contact GU2 when the handset is lifted. Operation of the tone generator HTG2 is however inhibited so long as a carrier signal is being received from the handset, a control lead K being provided from the output of the I.F. amplifier ZV of the instrument body receiver E2. The circuit may also be arranged so that the tone generator HTG2 and the microphone RK function additionally to receive ringing incoming on the subscriber's line La/b, so replacing the bell circuit C, W.
Patent GB-1177889-A (GB)
Title: Pulse Controlled Printing Device
Inventor: SCHREM GUNTER
IPC: B41J7/32
Filed: 1968-09-26
Abstract: 1,177,889. Selective printing. WALTHERBUBOMASCHINEN G.m.b.H. 26 Sept., 1968 [28 Sept., 1967], No. 45741/68. Heading B6F. [Also in Division G4] A shaft 1 is moved in the direction of the solid arrow to allow a set of toothed arcuate segments 3 to rotate about a shaft 4 under the action of springs 2, the segments 3 driving respective type wheels through gearing (not shown). Each segment 3 is arrested by momentary energization of an associated solenoid 5 by an S.C.R. circuit (Division G4) so as to position the desired character opposite a printing roller, the armature lever 7 releasing a pawl 9b so that it engages one of the teeth 4a. After printing, the shaft 1 is moved back so as to restore the segments 3, at the same time engaging surface 11a of a lever 11 to ensure restoration of armature 7 by means of a stud 12. Armatures 7 are preferably coated with plastics material to avoid sticking.
Patent GB-1160397-A (GB)
Title: Improvements in or relating to Maser Arrangements.
Inventor: DUGUAY MICHEL ALBERT
IPC: G02F1/03
Filed: 1967-10-06
Abstract: 1,160,397. Light modulators. WESTERN ELECTRIC CO. Inc. 6 Oct., 1967 [12 Oct., 1966], No. 45745/67. Heading H4F. [Also in Division H1] An arrangement for changing the frequency spectrum of pulses produced by a maser oscillator consists of a member having a refractive index which changes with an applied influence through which member the pulses are passed, and means for applying a varying influence to the member in synchronism with the pulses. The influence may be electrical, magnetic, thermal or acoustic. The output pulses from a mode locked laser 12 are passed through member 28 comprising a crystal of lithium metaniobate. The laser has a modulator 22 located within resonator 19, 21 and modulated at a synchronous frequency of the resonator to produce a series of pulses at the modulation frequency, as described in Specification 1,096,180. The pulses are also directed on to a photo-multiplier 33 which gives an electrical output at the pulse frequency (e.g. 56 mc/s.) This output is amplified by a tuned 56 mc/s. amplifier, the sinusoidal output from which is applied to crystal 28. By adjusting the phase of the sinusoidal signal relative to that of the laser pulses so that the pulses pass through the crystal while its refractive index is decreasing substantially linearly the frequencies of the Fourier components of each pulse are increased by an amount d/dt (nl/#) cycles per second, although the pulse repetition frequency is unchanged. Similarly the frequencies may be reduced by synchronizing the light pulses with a period of increasing refractive index. The frequency shift may be increased by causing the light pulses to traverse the crystal several times, as shown, or by increasing the amplitude or changing the wave shape of the applied field. To increase the time during which the applied field changes linearly during each cycle a third harmonic component can be added to the fundamental of the field. By increasing the separation of mirrors 29, 31 or by inserting optical delay lines the light pulses can be made to traverse the crystal once per cycle of the applied field. In a modification, mirrors 29, 31 are replaced by frequency selective mirrors forming a resonant cavity containing crystal 28. The input mirror is transparent to the centre frequency of the incoming pulses and reflective to other frequencies, whereas the output mirror is transparent to the desired output frequency and is otherwise reflective. Light pulses are thus trapped in the cavity until they have been frequency shifted sufficiently to emerge from the output mirror. The laser pulses may be passed through several controlled crystals in cascade, the effects being cumulative. Where the wave shape of the applied field is to be changed by the addition of a harmonic to the fundamental the two components may be applied to different crystals.
Patent GB-1166619-A (GB)
Title: Apparatus for Opening and Closing a Container
IPC: G03G15/08
Filed: 1966-10-14
Abstract: 1,166,619. Dispensing toner in xerographic machines. RANK XEROX Ltd. Oct. 14, 1966 [Oct. 18, 1965], No. 46100/66. Heading G2H. A device for supporting a container 10 for xerographic toner on a xerographic machine has driving means which open and close the container. The container 10 has an opening closed by a liner 20 rotatable in the container. The liner 20 has a closed end portion 22 and is rotated by a hub 30, Fig. 4, co-operating with a drive portion 23. The container 10 is positioned over an opening 41 in base-plate 40, the container being restrained against rotation by a slot 44 engaging a projection on the container. A cover 37 is actuated by mechanism 60 which in the closed position of the cover occupies a housing (49, Fig. 7, not shown). Raising of the cover causes movement of a link 61, Fig. 4, pivoted on a shaft 80. Arms 64, 65 support an arm 66 rotatably supporting the drive hub 30. The hub 30 is rotated by a spring-loaded handle 94. A cam-operated latch 54 locks a container in position for supplying toner to the metering mechanism (6, Fig. 1, not shown).