baber/WOPTO huggingface dataset:
Patent GB-628260-A (GB)
Title: Method for the duration modulation of electric pulses
IPC: H04J3/04
Filed: 1946-07-31
Abstract: 628,260. Pulse modulation multiplex pulse signalling. SADIR-CARPENTIER. July 31, 1946, Nos. 22873, [Convention date, July 31, 1945], 22874 and 22875, [Convention dates, Aug. 1, 1945]. [Class 40 (v)] Amplitude-modulated pulses fed across a resistance 14, Fig. 3, from a modulated valve 8, are converted into duration modulated pulses beginning at the commencement of the amplitude-modulated pulses and terminating when a sawtooth voltage obtained by the charging of a condenser 15 from a constant current generator 17 reaches a positive value equal to the negative voltage produced by a pulse across the resistance, a diode 16 or other valve with anode connected between the condenser 15 and generator 17 then returning to a normally conducting state. The duration modulated pulses produced during blocking of the diode 16 pass through a valve 18 and a pulse shaping member 19. The diode may be omitted if the grid cathode resistance of the valve 18 is low. The pulses are produced by a constant amplitude pulse generator 9 and are amplitudemodulated by the valve 8 using suppressor grid injection of the modulating voltage from a source 10. Alternatively, Fig. 5, the amplitudemodulated pulses from the modulator valve 23 are fed to an anode resistance 30 connected across the grid and anode circuit of a valve 29 having between its anode and cathode a charging condenser 28, and a resistance 34 in its anode lead. Constant amplitude pulses are fed from a generator 9 to the grids of a valve 22 and of the modulator valve 23. The valves 22, 23 are normally blocked and the condenser 28 uncharged, but on the valves receiving a positive pulse the condenser 28 charges from the triode or pentode 22 until the voltage across it becomes equal to the voltage across resistance 30 due to the amplitude-modulated pulse from the valve 23 (disregarding the negligibly small cut-off bias of the valve 29). The durationmodulated pulse commences at the instant when the valve 29 conducts, is taken off across the resistance 34, and continues till the pulse from the generator 9 ceases, the valves 22, 23 then becoming blocked again due to the negative charges acquired by the grid sides of the condensers 24, 26, the condenser 28 at the same time quickly discharging across the valve 29. Multiplex transmissions may be obtained using circuits as in Fig. 3 and a delay line 42 (Fig. 12, not shown), from tappings on which various pulse amplitude-modulator valves, one to each communication channel, are fed, the valve feeding a common resistance 52, charging condenser 53, diode 54 and constant current generator 55 duration-modulating the pulses, and a mixer 49 receiving direct from the pulse generator the synchronizing signal. Alterna. tively circuits as in Fig. 5 may be used (Fig. 13, not shown).
Patent GB-604940-A (GB)
Title: Improvements in or relating to back flow check valves
IPC: E03F5/042
Filed: 1945-09-05
Abstract: 604,940. Non-return valves. ABBEY, A. (Hirshstein, J.). Sept. 5, 1945, No. 22892. [Class 135] A valve for preventing back-flow in a drain line comprises an elbow 15 with an inclined seat at its upper end for a disc valve 23, the latter being pivoted on trunnions slightly less inclined to the vertical so that the valve tends towards the closed position, but is easily opened by flow of water in the normal direction. The valve disc carries an upstanding stud loosely engaging in an aperture in one end of a hinging arm to allow of a limited universal movement to the disc, and the arm at its other end is provided with lugs 30 formed with pivot recesses for pointed bolts 21 screwing through bearing lugs 20. The disc carrying arm is twisted along its length as its pivoting axis and the disc 23 lie in planes which are inclined to each other. The lower end 16 of the elbow may be horizontal or inclined as shown, so that, by rotating the elbow, the pressure required to open the valve can be varied.
Patent GB-241371-A (GB)
Title: Improvements relating to the tuning coils used in connection with wireless telegraphy and telephony
IPC: H01F21/00
Filed: 1924-09-29
Abstract: 241,371. Barbour, R. E. Sept. 29, 1924. Inductances. - A variometer comprises a stator 1 and two rotors 2, 3 mounted so as to be rotatable either together or inde. pendently, the rotors being connected in parallel with one another and in series with the stator. The rotor 3 is mounted on spindles 5, 5<a>, and is rotatable by a knob 5<b>, the rotor 2 being mounted on concentric spindles 4, 4<a> and rotatable by a knob 4<b>. The winding of the rotor 2 is connected to the spin. dles, 4, 4<a>, and the winding of the rotor 3 is connected to the spindles 5, 5a. One end of the stator winding is connected to the spindle 4<a>, the other end being brought to a terminal 14. The invention is applicable also to variometers in which the parts move relatively to one another otherwise than by rotating. A reaction unit and fixed or variable condensers may be added. The variometer may be employed for aerial tuning and for anode tuning.
Patent GB-540205-A (GB)
Title: Improvements in or relating to photographic sound recording
IPC: G11B7/00
Filed: 1939-08-08
Abstract: 540,205. Sound recording. LAFFON, Y SOTO, A., and SELGAS Y MARIN, E. DE. Aug. 8, 1939, No. 22918. Convention date, Aug. 16, 1938. [Class 40 (ii)] [Also in Group XL] A torsionless suspension for the moving coil 4 of a light valve comprises wires or threads 3 in the form of a polygon having any number of sides. The threads 3 are of equal tension and length and give the coil a natural frequency below the audible limit. The leading- in wires of the coil are in the form of damped spirals of very low natural frequency. The suspension is displaceable parallel to the axis of the coil so as to bring the coil turns within a part of the magnetic gap 6 where the flux is reduced by shaping the outer pole piece. The shutter 5 carried by the coil may be of various shapes, Figs. 7 to 11 (not shown). The magnet and coil system may be duplicated, two coils on the same former controlling a single shutter, Fig. 2 (not shown), or separate coils may control separate shutters, Fig. 3 (not shown); in the latter case one coil may carry speech currents and the other a rectified current for noiseless recording.
Patent GB-1121572-A (GB)
Title: Building material
IPC: C04B28/02
Filed: 1966-05-24
Abstract: A building material mixable with water to form a self-setting mass comprises wood particles, flyash and cement.  Optionals are CaCl2 as an accelerator, and polyvinyl acetate as a secondary binder, while the Provisional Specification states sand can be present.
Patent GB-422336-A (GB)
Title: Improvements in and relating to electric resistance heaters
IPC: H05B3/46
Filed: 1934-08-10
Abstract: 422,336. Wire resistances. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. Aug. 10, 1934, No. 23172. Convention date, Aug. 12, 1933. [Class 37] An electric heating element comprises a heating resistance 10 wound round a flexible yielding insulating core 11 reinforced by a metal wire 12, and the whole is covered by a layer of fibrous insulating material which is compacted by swaging or otherwise reducing the diameter of an enclosing metal sheath 20. The element is provided with terminals 13 connected by swaging the two ends of a connecting piece 14 round the ends of the core and terminal. This compression causes the end of the core to surround and insulate the end of wire 12. Leads 15 are connected to the terminals 13 by connectors 16 similar to connectors 14. The sheath 20 may enclose the terminals and be swaged at each end to fit tightly round the leads 15. Asbestos insulation 18 impregnated with resin is provided at each end of the heater.
Patent GB-1370520-A (GB)
Title: Slide projector
IPC: G03B23/04
Filed: 1972-05-17
Abstract: 1370520 Optical projection apparatus FRANKE & HEIDECKE GmbH [trading as ROLLEI-WERKE FRANKE & HEIDECKE] 17 May 1972 [13 Aug 1971] 23183/72 Heading G2J A slide magazine feed mechanism for attaching to a magazine slide projector adapts the projector indexing mechanism to accept magazines having differently sized racks. It includes two sliding members 3 (only one indicated) each having a pawl 4 driving pinion 6 by contacting pins 5. The pinion 6 is connected to the rack of a slide magazine. The members 3 are selectively engaged by part 2 of the projector slide change mechanism, the member so engaged thus determining whether the pinion 6 moves the magazine forwards/backwards. Each member 3, as it slides, is guided by pilot 11 fitting in groove 13 and urged back by spring 15. Spring 12, which is weaker than spring 15 helps the member 3 to be guided over pilot 11. A lug 14 can engage the magazine rack and provide locking thereof. Thus play in the movement of the member 3 and its contact with the pins 5 and also final movement of the magazine by engagement of the lug 14 serves to modify the movement of the part 2 to advance the magazine by the required distance.
Patent GB-1107759-A (GB)
Title: Releasable fastening
Inventor: ADAMS FREDERICK DOUGLAS
IPC: F16B17/00
Filed: 1965-06-01
Abstract: 1,107,759. Stud and socket fastenings. BURRAFIRM Ltd. 10 May, 1966 [1 June, 1965], No. 23240/65. Heading E2B. In a stud and socket fastener formed of synthetic plastics material the socket portion 10 comprises a mounting portion 10a having a pair of arms 12, 12, upstanding therefrom for resilient engagement with a stud portion 11 comprising a head 13a and a mounting portion 11a.
Patent GB-862984-A (GB)
Title: Improvements in or relating to breathing apparatus for underwater use
IPC: B63C11/24
Filed: 1957-07-23
Abstract: 862,984. Respiratory appliances. DRAGER, O. H. July 23, 1957 [July 23, 1956], No. 23333/57. Class 8 (2). Underwater breathing apparatus comprises a breathing circuit and two containers 9, 12 for oxygen and another gas, respectively, under high pressure, each container being connected to the breathing circuit by a pressure reducing valve 10, 13 which can reduce the gas pressure to twice or greater than twice the gas pressure in the breathing circuit and a throttle 11, 14 disposed downstream of each pressure reducing valve. The oxygen bottle 9 is connected through the reducing valve 10 and an interchangeable throttle element 11 to a conduit 15 to which a bottle 12 of inert gas or compressed air is also connected by way of the second reducing valve 13 and a second interchangeable throttle element 14. The gases are mixed in the conduit 15 and pass into a breathing bag 1 through a connecting piece 16. Gas flows to a mouthpiece 7 or mask from the breathing bag 1 by way of an inhalation hose 3 and is returned to the breathing bag 1 through an exhalation hose 4 and a carbon dioxide absorber 2. A relief valve 8 is provided on the breathing bag 1. A coil spring 30 prevents complete collapse of the breathing bag. Oxygen may also be supplied from additional oxygen bottles 18 by way of hand-operated valves 21, 22. The apparatus may be used without the oxygen and gas bottles 9, 12, their respective reducing valves and throttle elements and the connecting piece 16 which may be detached from the breathing bag 1, oxygen then being supplied only by the additional oxygen bottles 18.
Patent GB-877519-A (GB)
Title: Improvements in or relating to cycle mudguards
Inventor: BLUEMEL FRANK WILLIAM
IPC: B62J15/00
Filed: 1959-07-08
Abstract: 877,519. Cycle mudguards. BLUEMEL BROS. Ltd. July 7, 1960 [July 8, 1959], No. 23417/59. Class 136(1). A channel shaped mudguard 20 is formed with an opening 12 in each of its sides 11  through which extend the two limbs 14, in spaced relation to the mudguard's edges 18, of a U-shaped stay element having its midportion 17 bent transversely of its length at 19 to engage with the inner face of the mudguard to secure it laterally when the stay is fixed to the cycle frame. The mudguard is extruded, moulded or pressed in a flexible material such as sheet-metal or plastic and may have beaded edges. Eyelets 13 prevent chafing at the openings. The mudguard may be connected to the cycle frame by two stayelements with their inner ends in the region of a wheel-hub (Fig. 1, not shown) with additional attaching means elsewhere (not shown). A rubber tube may be threaded on to the stay in the region of the mudguard. In another embodiment (not shown) the openings may be L-shaped with the long "leg" of the "L" extending transversely inwards from the edge of the mudguard and the short "leg" parallel to the length, of-the mudguard and of a width slightly smaller than the diameter of the wire stay.
Patent GB-1287028-A (GB)
Title: Photoconductive compositions
Inventor: MERRILL STEWART HENRY
IPC: C08L61/02
Filed: 1970-05-14
Abstract: 1287028 Photoconductive composition EASTMAN KODAK CO 14 May 1970 [19 May 1969] 23423/70 Heading H1K A photoconductive composition comprises a photoconductor and a mixture of a haloarylketone-formaldehyde resin and either a vinyl resin or a polycondensate resin. In the specific embodiments the photoconductor is a toluidine, the vinyl resin is styrene or poly vinyl-m.bromo. benzoate, the polycondensate is a polycarbonate or a polyester of iso- or terephthalic acid and the haloarylketone-formaldehyde resin is a resin of mono- or dihaloacetophenone or 1-acetyl-4- bromo naphthalene with formaldehyde. The composition is coated on an electrically conducting organic layer on a cellulose acetate support to form an electrophotographic plate. Many other materials are specified for the composition and the conductive support.
Patent GB-1114718-A (GB)
Title: Improvements in and relating to filling machines
IPC: B67C7/00
Filed: 1965-06-02
Abstract: 1,114,718. Applying container closures. SEITZ-WERKE G.m.b.H. 2 June, 1965 [5 June, 1964], No. 23441/65. Heading B8T. Lids are loosely applied to liquid filled containers within a rotary filling machine having circumferentially spaced container lifting supports 13 and a rotary container discharge member 14, by feeding the lids from a stacking device 18 via a guide 20 to the tops of spaced grooves 15 in the discharge member which conveys them to a position of contact of the pitch circles of the member 14 and the supports 13. At this position each filled container, which has been lowered by its support to bring its top below a lid on the discharge member, is raised to remove the associated lid from the member which transports the container and lid by means of a groove 15 to a conveyer 17 leading to a lid sealing installation 16. The supports 13 are moved vertically by cam action on a curved track. The discharge member is partially covered by a plate 22, having a slot 23, Fig. 4 (not shown), which retains the lids in position above the container receiving grooves 15.
Patent GB-356417-A (GB)
Title: An attachment to theatre and other like seats for displaying information
IPC: A47C1/13
Filed: 1930-08-05
Abstract: 356,417. Changeable signs. KNIGHT, C. H., Ames Street, North Carlton, Victoria, and RANDALL, P., Lily Lane, Bourke Street, Melbourne, both in Australia. Aug. 5, 1930, No. 23452. [Class 3 (i).] In seat indicators wherein a display plate or disc 12 is rotatable, by a key 11, within a casing 5 fixed to the chair &c. 6, windows for the viewing of the disc and for other displays are provided on both sides of the casing 5. The casing carries a cowl 16 fitted with a mirror 17 to reflect light from a lamp 18 on to the floor.
Patent GB-773842-A (GB)
Title: Improvements in or relating to a device for recording the parking time of a vehicle or other machine
IPC: G07F17/24
Filed: 1955-08-15
Abstract: 773,842. Time-alarm signals. L'HERMINE, J. D. Aug. 15, 1955 [Sept. 1, 1954; July 11, 1955], No. 23485/55. Class 118 (2). [Also in Group XVIII] A parking meter for vehicles comprises a clock-like device 1 which is received upon payment corresponding to authorized parking of a total duration equal to the time the device will run (in the embodiment shown, 50 hours). Whenever the vehicle is parked a control knob 25 is turned to move a stop member 12 from the " forbidden " position of Fig. 1 to the " Authorized " position of Fig. 2 and thereby start the clockwork running by withdrawing a lug from between the teeth of a gear-wheel (Figs. 3 and 4, not shown; see Group XVIII). The device is left in the vehicle so that it can be seen from the exterior, a disc 41 rotating to indicate that the device is in operation and the pointer 9 indicating the unexpired parking time paid for. At the end of a parking period knob 25 is turned back to stop the mechanism. When the integrated parking time reaches 50 hours, and the pointer 9 is therefore at zero on the scale, a locking device automatically releases the stopmember 12 from control by knob 25, thereby locking the meter in the " Forbidden " condition from which it can be reset only by partial dismantling by an authorized person. A delayed action mechanism is also incorporated to signal when a given maximum time for any one parking period, e.g. one hour, is exceeded. This comprises a spring-loaded lever restrained by the clockwork but released after the said period of running to project a signal arm 44 across the "Authorized" indication, as shown in Fig. 2. This mechanism is restored each time the knob 25 is operated and is not of an integrating nature. In a modification (Figs. 9 to 12, not shown) a fine may in effect be applied by increasing the speed of the clockwork drive whenever the signal arm 44 is brought into operation. This is done by engaging the pallets of the escapement anchor with an escape wheel having a lower number of teeth (see Group XVIII). This change may alternatively be used with external control means for selectively applying one of two normal parking fees. In a further modification (Figs. 13 to 18, not shown) a second pointer is provided which starts from zero and is driven anti-clockwise over the scale by gearing engaged whenever signal arm 44 is operative. Coincidence of the two pointers allows axial movement of the driving tube of the auxiliary pointer and this disengages the connection between knob 25 and stop-member 12 so that the meter is locked in the " Forbidden " condition.
Patent GB-464564-A (GB)
Title: Improvements in or relating to illumination systems for picture projection
IPC: G03B21/20
Filed: 1936-08-27
Abstract: 464,564. Optical-projection apparatus. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Aug. 27, 1936, No. 23565. Convention date, Aug. 30, 1935. [Class 97 (i)] A film gate 3 is disposed at or adjacent one focus f<2> of an ellipsoidal reflector 1, and one or more linear light sources 2 are arranged at or near the other focus f<1> and either in the axis of - revolution of the ellipsoid or parallel thereto at a minimum distance therefrom. The light sources may be liquidcooled high pressure mercury vapour discharge tubes having contracted discharge paths, so mounted as to be movable longitudinally of the reflector. For this purpose they may be interchangeably mounted on a reflecting cover closing an aperture in the rear wall of the reflector.
Patent GB-841797-A (GB)
Title: Improvements in dynamic dampers
IPC: F16F15/14
Filed: 1958-07-22
Abstract: 841,797. Torsional vibration dampers. LUXEMBOURGEOISE DE BREVETS ET DE PARTICIPATIONS. July 22, 1958 [July 22, 1957], No. 23573/58. Class 108(3). In a torsional vibration damper, an inertia ring 3, Fig. 1, is bolted to a casing 12, which is supported on flanges 11, by rubber blocks 13. A clearance space between the casing 12 and the member 14 is filled with a viscous material M. In a modified form of construction, flanges 11, are in contact with a shaft 1, and the casing 12, has flanges which are parallel to, and spaced axially from, flanges 11. These two sets of flanges are connected together by rubber blocks.
Patent GB-480714-A (GB)
Title: Improvements relating to variable speed centrifugal governor control
IPC: G05D13/00
Filed: 1936-08-28
Abstract: 480,714. Variable speed friction gearing. HEINZMANN, F., and HEINZMANN, R., (trading as HEINZMANN, M. J., [Firm of]). Aug. 28, 1936, No. 23594. Convention date, Nov. 27, 1935. [Class 80 (ii)] [Also in Group XXVI] A governor shaft 9 is supported in bearings 11, 12 and mounted parallel to the driving shaft 1. Friction wheels 2, 8 are engaged by a hemispherical wheel 3 mounted on a shaft 4 which may be adjusted by rotating a shaft 7. The wheels 3, 8 are pressed into engagement by springs 6, 10. The wheel 2 dips into lubricant 13. The shafts 1, 9 may be arranged at rightangles to each other.
Patent GB-1209977-A (GB)
Title: Method of stabilizing bulked continuous filament thermoplastic yarn
IPC: D02G1/20
Filed: 1968-05-17
Abstract: 1,209,977. Spinning; treating textiles. JONATHON LOGAN Inc. 17 May, 1968 [20 July, 1967], No. 23699/68. Headings D1F and D1L. A method of stabilising at a desired bulk level bulked, heat-settaible, thermoplastic yarn wound in a package on a core, the yarn in the outer portion of the package being at substantially the desired bulk level and the yarn in the inner portion of the package being below the 'desired bulk level, comprises the steps of removing the core and replacing it with a perforated tube of smaller diameter, axially compressing the package, and treating the package with heated liquid. A package 17 of bulked yarn wound on a cardboard tube 16 is placed on a table 23, core 16 being aligned with an aperture (24) in table 23 and with a mandrel 20 carried by the piston of a hydraulic ram 21. A perforated, stainless steel tube 25, less in diameter than tube 16, is positioned on mandrel20 in abutment with a radial flange 22 thereon. The ram is then operated to eject tube 16 and to replace it with tube 25, the package being compressed by flange 22 at the end of the downward stroke. The package is then immersed in heated liquid which may also serve for dyeing the yarn.
Patent GB-1394035-A (GB)
Title: Mouth and teeth care means for the prevention of tartar  formation
IPC: A61K8/55
Filed: 1973-05-18
Abstract: 1394035 Mouth or tooth care agent HENKEL & CIE GmbH 18 May 1973 [19 May 1972] 23761/73 Heading A5B . A mouth or teeth care agent has a content of 0.01 to 10% by weight of a compound of formula: in which R 1  represents -CH 2 -COOH or -CH 2 -PO 3 H 2 ; or in which R 2  represents -CH 2 -CH 2 OH or -CH 2 -PO 3 H 2 ; or in which R 1  represents -CH 2 -COOH or -CH 2 PO 3 H 2  or a physiologically acceptable salt of the compound as active substance, and at least one carrier and the pH of the agent is 5.0 to 9.0. The agent may be in the form of a mouthwash which may also contain hydrogen peroxide or chlorthymol.
Patent GB-1044773-A (GB)
Title: Curable compositions of copolymers of ethylene and alkyl acrylates
IPC: C08K5/14
Filed: 1963-06-17
Abstract: A curable composition contains (1) an ethylene/alkyl acrylate copolymer containing 6-50% of the alkyl acrylate and (2) an effective amount, e.g. 0.1-8% of a heat-sensitive free-radical-generating curing agent, e.g. dicumyl peroxide.  The alkyl acrylate may be methyl or ethyl acrylate.  The composition may also contain 0.5-2.0 parts of carbon black per part of copolymer or TiO2, BaSO4 or CaCO3 as filler. The composition may be formed into a shaped product by mixing the copolymer at a heat plastifying temperature with the curing agent and carbon black, below the decomposition temperature of the curing agent, and then curing the shaped composition by heating. The curing agent may also be 2,5 - dimethyl - 2,5 - di - (t. - butyl - peroxy)-(-hexane or -hexyne-3).