baber/WOPTO huggingface dataset:
Patent GB-694870-A (GB)
Title: Process for increased clarity and transparency of polyethylene products
IPC: B29D7/00
Filed: 1950-10-06
Abstract: The clarity of solid polyethylene extruded film is improved by heating the film after continuous extrusion at, e.g., 240-500 DEG F., for a minimum clearing time while the main central portion of the film is out of contact with solid <PICT:0694870/IV (a)/1> <PICT:0694870/IV (a)/2> <PICT:0694870/IV (a)/3> objects.  The film is then quenched to below 180 DEG  F. in a liquid bath.  The minimum clearing time, after which there is no readily visible improvement in clarity of the film, may be determined from the expression <FORM:0694870/IV (a)/1> where t = clearing time in seconds, h = sheet thickness in mils., and T = temperature in  DEG  F.  An extrusion apparatus described (Fig. 1) includes a unit in which the hot film is extruded from a die D, gripped at the edges by rollers 2 and stretched laterally in a heating zone held at 240-500 DEG  F. by heaters 3, 6a.  The film is quenched in a bath 4, dried in a hot air oven 18 at less than 240 DEG  F. and rolled at 17.  The quenching unit (Figs. 2, 4) has festooning rolls 10, 11, 12, the intermediate roll 11 being journalled in blocks 13 to slide vertically, while a notch and sliding bolt 16 holds the roller 11 in or out of position, or alternatively, the tension is maintained by the weight of roller 11.
Patent GB-920045-A (GB)
Title: Improvements relating to clothes lines
IPC: D06F53/00
Filed: 1961-07-06
Abstract: 920,045. Clothes lines. G. T. METHLEY. Dec. 27, 1961 [July 6, 1961], No. 24483/61. Class 52 (5). A hoist for a clothes line has a member 1 secured to a wall or post and having a bracket 2 formed thereon to which a lever arm 3 is pivoted by a rod 4, a second bracket part 5 carrying a pulley 6 and the clothes line is tied to an eye 10 on part 5, passes over a pulley 7 mounted on arm 3 and over pulley 6, the line being raised by swinging lever 3 downwards to engage a hook 9. In a modification, Fig. 3, lever arm 3 has spaced holes 12 and the end of the clothes line is secured to a split ring 13 which may engage in a hole.
Patent GB-1341179-A (GB)
Title: Coding video signals
IPC: H04N19/50
Filed: 1972-05-25
Abstract: 1341179 Digital transmission; coding INTERNATIONAL BUSINESS MACHINES CORP 25 May 1972 [3 June 1971] 24558/72 Heading H4P Coding of a video signal is selectively changed between differential PCM and delta modulation depending on amplitude behaviour of the signal, determined bit groups indicating to a decoder change from one to the other. Differential PCM is normally employed but on production of similar sequences change to delta is made; in addition at the end of each line delta modulation is automatically employed to prevent carry-over of errors and to aid line synchronization. Conversely, determined combinations of bits cause change to DPCM. Majority selection may be used to reduce bit transmission. The scan frequency is 3 fs for DPCM where transmission bit frequency is fs. For DPCM, amplitude differences are scanned and coded into eight levels, represented by three bits, in quantizer 19 which also provides a 2-level delta output to logic unit 21 which generates an appropriate sequence of bits, also senses and changes DMCP/delta coding and has an output to buffer 29 which may comprise dynamic shift registers operated cyclically. Output from 29 is a constant bit rate fb irrespective of input rate hence buffer may tend to fill or empty; at determined limits gain control 33 adjusts amplifier 15, i.e. at a determined fullness amplification is decreased and conversely. This operation is compensated in the decoder. Output of amplifier 15 is compared with a reformed "image" through units 23, 25 from logic units 21.  At the receiver a similar buffer 51 feeds into logic unit 53 which suppresses marker bits and furnishes DPCM/delta and mode signals; dependent on the mode, bits are read at 3 fs or fs respectively. A D/A converter 57 for integrator 59 feeds amplifier 61 which is controlled by degree of fill of buffer 51. Propagation of fortuitous error from one line scan to another is prevented by switching to delta modulation at the end of each line, which process may be extended to aid line start synchronation. To prevent edge aberration when transmitting still of slowly moving pictures due to code changes in consecutive transmissions not occuring at the same point, look-ahead circuitry is provided (Fig. 6C, not shown), to effect switching to DPCM immediately at a signal rise or fall. It is stated that received quality is equal to an unmodified DPCM system of twice the bit rate of the disclosed system. Details of the logic units and method of coding are described in the specification.
Patent GB-656030-A (GB)
Title: Improvements in sorel cement
IPC: C04B28/32
Filed: 1948-09-20
Abstract: A finely-divided cuprous powder comprising metallic copper particles with a cuprous oxide film thereon and a substantial proportion of cuprous oxide is added in minor amount to a Sorel type cement.  The cuprous powder is obtained by treating "cement copper" or "precipitated copper sludge" from refineries in an impaction mill after or simultaneous with the removal of water. To prevent oxidation during transport a minimum of 22 per cent of water should be present in the sludge, and this reduced to between 0.2 and 0.4 per cent in two stages.  The cement may be a dry mixture requiring gauging by either water alone or a solution of magnesium chloride. Specification 465,240 is referred to.
Patent GB-1157781-A (GB)
Title: Improvements in Marine Cranes
Inventor: BROWN JOHN GEORGE
IPC: B66C23/52
Filed: 1967-05-26
Abstract: 1,157,781. Arrangement of ship's crane. GEORGE BROWN & CO. (MARINE) Ltd. 17 June, 1968 [26 May, 1967], No. 24620/67. Heading B7S. [Also in Division B8] A ship's crane, which is mounted between decks by the side of a door 15, has a telescopic jib 10 which can be extended out of the door and over a quay for loading the ship. Goods are swung inboard by slewing the crane through 180 degrees on a pillar 11.
Patent GB-1343810-A (GB)
Title: Impact crusher for size-reducing
IPC: B02C13/09
Filed: 1971-04-19
Abstract: 1343810 Impact pulverizers HAZEMAG HARTZERKLEINERUNGS - U ZEMENT MASCHINENBAU GmbH 19 April 1971 [17 April 1970] 24631/71 Heading B2A [Also in Divisions B8 G1 and G3] The product size from an impact crusher is controlled, irrespective of the state of wear of the crusher, by adjustment of rotor speed and/or adjustment of the position of impact and grinding plates 6, 8 relative to the rotor 2 by means of rams 7. The plate 8 may be in the form of a grating. The crusher rotor 2 carries beaters or hammers 3 and is driven by an electric motor via a variable transmission 5. In operation, material is supplied by a hopper 11 and ground product leaves via a chute 12. A deflector 12' in the chute deflects material on to an arrangement of screens 13 which includes two weighing devices 14, 15. Device 14 weighs the oversize and device 15 the total sample. The difference is converted to an electrical or hydraulic signal which is used to adjust the transmission 5 or rams 7.
Patent GB-592525-A (GB)
Title: Improvements in or relating to brake releasing mechanism
IPC: F16D63/00
Filed: 1945-09-24
Abstract: 592,525. Brake-operating mechanism. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET, LINDAHL, G., and CARLSSON, J. E. Sept. 24, 1945, No. 24650. Addition to 495,897. [Class 103 (i)] In brakes according to the parent Specification, that are released by a centrifugal device and applied, for instance, by a weight and wherein the centrifugal device is provided with an auxiliary brake for bringing the centrifugal device to rest when the power for the motor driving the device is cut off to apply the main brake, the auxiliary brake is wholly electrical. Where a D.C. motor is used the auxiliary braking may be effected by short circuiting the armature with or without resistance and in the case of an A.C. motor, reverse current braking may be employed. To obtain a soft braking action by the main brake the auxiliary braking may be discontinued before the rotation of the centrifugal device has entirely ceased as by means of an automatic circuit-breaker with an adjustable time limit relay.
Patent GB-896119-A (GB)
Title: Locking terminal block
IPC: H01R9/26
Filed: 1960-07-15
Abstract: 896,119. Two-part couplings; plugboards. BURNDY CORPORATION. July 15, 1960 [July 21, 1959], No. 24661/60. Class 38 (1). Pin connectors 14, 16 on the ends of insulated wires 18, 20, entering recesses 12 in an insulating block 10 via apertures 60 in the spring- loaded insulating covers 36, 38 which have rails 44 sliding in channels 40 near the end faces of the block, are locked in position by the engagement under the influence of spring 52 of the edge 64 of cover apertures 60 with slots 62 in the connectors. A connector is inserted into the insulating block 10 by pushing the connector against an inclined canning surface 66 on the edge 64 of aperture 60 thus depressing the cover and aligning its apertures with the recesses in the block. Removal of connectors is effected after manual depression of the cover. The block 10 may be mounted by insertion of its feet 22 into frame channel 24, and several blocks may be held side by side on the frame by the engagement of tongue and groove portions 28 and 30 of adjacent blocks, tight fitting being ensured by forcing flexible tooth 29 on the tongue into seat 31 of the groove.
Patent GB-481294-A (GB)
Title: Woven wire belts for paper making machines
IPC: D21F1/10
Filed: 1936-09-10
Abstract: 481,294. Wire fabrics. EASTWOODNEALLEY CORPORATION. Sept. 10, 1936, No. 24669. Convention date, March 23. [Class 142 (iv)] Fourdrinier paper-making machine wire belts are woven from flat ribbon-like warp wires 10, which may be À012" wide and À004" thick, and twisted cable weft wires 11, which may be À009" thick and each comprise 3 to 5 fine wires. The wefts may be slightly crushed at the knuckles, and be less deformed in the crimping than the warp, the weft knuckles coming into or close to the plane of the warp knuckles and the weft knuckle surface being increased both weft and warp wise. The wires may be of copper, bronze, brass or stainless steel. The weave plain, as shown, or twill. Specifications 447,165 and 458,363 are referred to.
Patent GB-1076919-A (GB)
Title: Improvements in digital data stores
Inventor: GILLETT JOHN BRIAN
IPC: G11C11/39
Filed: 1966-06-03
Abstract: 1,076,919. Unijunction transistor arrays. INTERNATIONAL BUSINESS MACHINES CORPORATION. June 3, 1966, No. 24732/66. Heading H1K. [Also in Division G4]  A digital data store comprises a semiconductor slice at least one face of which is of a first conductivity type, with a high conductivity base region of said first type formed at said face to define a plurality of discrete areas of the first type arranged in rows and columns, and an emitter of the opposite conductivity type and a high conductivity second base region of the first type formed in each area so as to constitute with the area-defining base region a unijunction transistor storage cell. In the embodiment annular P-type emitter regions each with a radial resistive extension are first formed in an N-type body or epitaxial layer on an insulating or P-type substrate by planar diffusion techniques. The base regions are next formed by the same technique after which contacts are deposited through apertures in oxide masking. These consist of segmental contacts 10a, 10b (Fig. 5) to the emitter, contacts 7 to the remote ends of the resistive extensions, and a pair of contacts 9a, 9b to each second base region. The contacts 7 of each row are then interconnected by a deposited conductive strip extending between the pairs of contacts 9, 10 and the second base regions of each column interconnected by a continuous strip or by a series of strips joining the nearest contacts on adjacent second base regions (Fig. 6, not shown).
Patent GB-729241-A (GB)
Title: Improvements in or relating to control systems for aircraft
Inventor: GLENNY ARTHUR PHILIP
IPC: G05D1/00
Filed: 1952-10-02
Abstract: 729,241. Gyroscopic apparatus. SPERRY GYROSCOPE CO., Ltd. Sept. 17, 1953 [Oct. 2, 1952], No. 24746/52. Class 97 (3). Automatic control apparatus for aircraft includes a safety device which automatically disconnects the automatic control apparatus from the control surface or surfaces of the craft whenever the rate of change of the inclination of the craft about a reference axis exceeds a set rate of change. The reference axis may be the pitch, roll or yaw axis. As shown, a gyroscope rotor 1 is spun about an axis AB in a rotor case 2 by a motor comprising a stator winding 3 and a squirrel-cage rotor 4. The rotor case is mounted to rotate about an axis CD, parallel to the fore-and-aft axis, in supports 5, 6, and is constrained to remain in a central reference position by springs 9, 10 acting on a lever 7 fast with the rotor case. The springs are connected to levers 12, 15 pivoted to support 5 and linked to a lever 17 fast with a pinion 20 which engages a toothed sector 21. Sector 21 is linked to bellows 40 connected by a pipe 41 to the air-speed indicating system, so that the tension in springs 9, 10 is proportional to the air-speed. When the aircraft pitches about an axis perpendicular to both axes AB and CD, the gyroscope will precess about axis CD through an angle proportional to V#, where V is the airspeed and # is the rate of pitch. A sleeve 31 sliding on an extension 30 of the gyroscope rotor shaft is controlled by a centrifugal governor so that it descends when the rotor is running so that it presses a pad 35 to close a switch 37 in the automatic control circuit. When the value of V# exceeds a safe value, precession of the gyroscope carries the end of sleeve 31 off pad 35 so that switch 37 opens and puts and automatic control system out of action slowing or stopping the gyroscope rotor has a similar effect. A second gyroscope responsive to rate of roll may control a second switch in series with switch 37. The set value of V# may be reduced when the aircraft is about to land. To this end the mounting plate 50 of bellows 40 is slidable on rods 43, 44. In normal flight solenoids 48, 49 are energized to move plate 50 against action of springs 46, but when the switch coupling the instrument landing system to the automatic control system is operated the solenoids are deenergized so that the bellows 40 moves outward, reducing the tension in springs 9, 10 and so reducing the value of V# at which the automatic control system is put out of action. Specification 543,482 is referred to.
Patent GB-1041338-A (GB)
Title: Improvements in or relating to electronic tube oscillators
IPC: H03B5/10
Filed: 1965-06-11
Abstract: 1,041,338. Valve oscillator circuits. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. June 11, 1965 [June 15, 1964], No. 24757/65. Heading H3F. In a Colpits or Hartley oscillator arrangement, for inductive or capacitive heating, the output power is derived from an off-resonance tuned circuit C 2 L 4  connected so that the anode resonant circuit will have two resonance frequencies, the series resonance frequency of a circuit C 3 , L 3  connected between the grid and cathode lying between the two resonance frequencies of the anode circuit so as to suppress one of these frequencies. The circuit oscillates at the lower of the two frequencies when connected as (Fig. 1) a Colpits circuit and the reactance of C 3 , L 3  above its resonance frequency becomes inductive so that the voltage at the grid is then in phase with the anode voltage to suppress the higher frequency. The circuit may be modified to form a Hartley circuit (Fig. 2, not shown), by replacing L 1  and C 1  by a capacitive and inductive component respectively so that the circuit oscillates at the higher frequency and suppresses the lower one. The output power from coil L 2  may be varied by adjusting reactances C 1  or L 1  and in order to maintain the fed-back voltage to the grid of constant amplitude, inductor L 3  is also varied. The inductance of coils L 1 , L 3  may be varied by moving copper cylinders or a common cylinder within or around the coils. Coil L 2  can form the primary of a L.F. transformer the secondary of which supplies the load coil. The output coil L 2  and capacitor C 2  may also be connected in series with L 1 .
Patent GB-882621-A (GB)
Title: Improvements in or relating to electro-chemical cells and methods of leakproofing the same
IPC: H01M2/02
Filed: 1960-07-15
Abstract: 882,621. Batteries. SOC. DES ACCUMULATEUKS FIXES ET DE TRACTIONS. July 15, 1960 [July 17, 1959; June 24, 1960], No. 24773/60. Class 53. A leak-proof cell has a plastics casing 8, the folded-over portions 13 being castellated so that no portion overlaps any other portion. The case is sealed at the bottom with a ring 15 exerting inwardly radial pressure. A metal contact disc 14 is also secured by the ring 15, but in a further embodiment this is dispensed with and the electrode I is suitably shaped at the end to project beyond the casing. The top is sealed by a plastics disc 9 under pressure from a disc 12.
Patent GB-462184-A (GB)
Title: Improved manufacture of threads from viscose
IPC: D01F2/06
Filed: 1935-09-05
Abstract: Viscose is first coagulated to form threads of cellulose xanthate, these threads are subjected to the action of a mechanical curling or crimping apparatus, and only after this operation is the cellulose xanthate converted to cellulose hydrate.  For example, viscose is spun into a bath composed of an organic acid, or ammonium or sodium sulphate with or without a very small proportion of acid, so that the threads are coagulated as cellulose xanthate, these threads are then subjected to the action of a mechanical apparatus for creasing and crimping the threads, and afterwards decomposed to cellulose hydrate by means of known spinning baths, acids, or heat.  The threads may then be cut up to staple fibres.  Specifications 366,546, [Group VIII], and 450,257 are referred to.
Patent GB-248378-A (GB)
Abstract: 248,378. National Cash Register Co., (Assignees of Christian, R. A., and Gates, E.). Feb. 26, 1925, [Convention date]. Cash registers; printing on inserted material.- Impression hammer control by the presence or absence of an inserted slip is effected by duplicate feeler mechanism devised to function irrespective of the precise position of the slip with jespeet to the printing line. To this end the feeler device such as that described in Specification 215,749 is duplicated so that two feelers 97, 103 connected to move in unison are arranged one on either side of the type wheels 30. The feelers guided by rollers 101 are pivotally carried by levers 95, 105 pivoted respectively at 96 and 106 and oscillated by a cam-slotted plate 92 engaging a rod 94 fixed to the two levers. The plate is rocked in the usual manner by cam 82 and pitman 79 attached at 80 to a bell crank 76 to which is secured the latch 73 for seizing the lug 74 on the hammer 38. The latter is operated by the abutting arm 43 rocked by spring 49 under the control of a pair of cam plates 57, 58 differing slightly in dimensions and engaged by the roller 56 and nose 60 of the arm 55.
Patent GB-1042771-A (GB)
Title: Internal combustion engine valve gear
IPC: F01L1/18
Filed: 1962-06-28
Abstract: 1,042,771. Valve gear. A. C. SAMPIETRO. June 10, 1963 [June 28, 1962], No. 24890/62. Heading F1B. [Also in Division F2] In an I.C. engine valve operating gear having a rocker arm 13 supported on a cylinder 23 engaged in a transverse hollow cylindrical portion 22 and carried on an externally splined tube 24 extending through aperture 25, the open end of tube 24 slides in a splined bore in a member 29 forming part of a support 18. A second tube 33, which is located within the bore abutting the support, extends with a close sliding fit into the splined tube, and is connected to a pressurized oil duct 35 which has at its end a one-way valve 36 permitting oil flow into the closed end portion of the splined tube. Each cylinder has four valves operated by four rocker arms 13, each of which is supported on a separate mounting, two of the mountings being secured on each of two longitudinal mountings 18, which extend parallel to the camshaft. Cylinder 23 is retained within cylindrical portion 22 by means of two circlips 20 or the cylinder 23 may project beyond the cylindrical portion 22 at both ends with the circlips engaged in external grooves in the cylinder. OPERATION Pressurized engine oil supplied via passages 35 and 34 to tube 33 unseats valve 36 and oil flows into the closed space at the end of the splined tube 24 forcing the tube 24 downwardly until play is taken up. Where the cam causes the rocker arm 13 to be urged upwardly valve 36 is seated against the end of tube 33 to prevent egress of oil from tube 24.
Patent GB-1410888-A (GB)
Title: Arrangement for recording electrical pulse sequences
IPC: G11B15/02
Filed: 1973-05-24
Abstract: 1410888 Recording pulse sequences; control circuits COMPUR-WERK GmbH & CO 24 May 1973 [15 June 1972] 24924/73 Heading G5R [Also in Divisions H2 and H4] An arrangement for recording pulse sequences includes a drive motor M for a storage medium, which motor is energized at the beginning of the first pulse of each sequence and de-energized a predetermined constant interval after the end of the last pulse of each sequence, by means of a circuit St controlling a switch Sw in the motor circuits and having a capacitor 28 which is maintained discharged by the pulses. Pulses applied across K1, K2 are effective in discharging the capactior 28 through a transistor 30, switching a trigger 32, 34 to render transistor 36 conductive and energize the motor M. The capacitor 28 is prevented from re-charging to a sufficient voltage to re-switch the trigger 32, 34 and de-energize the motor until the pulse sequence is ended. The system described employs a magnetic foil disc to record pulse sequences entered from a telephone dial and representative of telephone numbers.
Patent GB-686104-A (GB)
Title: Improvements in and relating to the treatment of textile materials composed wholly or partly of wool
Inventor: BATTYE ALBERT EDWARD
IPC: D06M13/127
Filed: 1949-09-29
Abstract: In the treatment of textile materials composed wholly or partly of wool or other animal fibres with a solution of an alkaline material, e.g. caustic soda, in an organic liquid to reduce their tendency to felt, the materials are also given an improved colour, handle and resistance to abrasion by treatment with formaldehyde or paraformaldehyde before, during or after the alkali treatment. Formaldehyde is preferably employed in aqueous acid solution, e.g. in solution in aqueous sulphuric or acetic acid and treatment with the formaldehyde may be effected before, during or after an acid neutralization treatment of the alkali-treated material.  The alkali solution is preferably one of caustic soda in butyl alcohol or a mixture of butyl alcohol and white spirit.  Numerous examples are given.  Specifications 538,396 and 538,428 are referred to.
Patent GB-1517043-A (GB)
Title: Diaper treated to inhibit conditions arising from microbial production of ammonia
IPC: A61K8/44
Filed: 1975-06-11
Abstract: 1517043 Disposable diaper PERSONAL PRODUCTS CO 11 June 1975 [12 June 1974] 25015/75 Heading A5B A disposable diaper comprises at least 0.001 gm per sq. ins. of area, a composition comprising EDTA, DPTA, HEDTA, TTHA, DCTA, DEDDA, IDA, HIDA or NTA or a water soluble salt to inhibit conversion of urea to NH 3  by bacteria.