baber/WOPTO huggingface dataset:
Patent GB-916936-A (GB)
Title: Improvements in or relating to extensible mine support elements
IPC: E21D15/44
Filed: 1959-09-14
Abstract: 916,936. Hydraulic pit props. EGGEMANN, W., and VON CAMPENHAUSEN, E., [trading as SCHWARZ KOMM.-GES., HERMANN]. Sept. 14, 1959 [Sept. 13, 1958], No. 31169/59. Class 20 (2). A telescopic hydraulic pit prop comprises two pressure chambers 27, 28, Fig. 1, or 27, 54, Fig. 5. The auxiliary chamber 28, Fig. 1, is formed in a floating piston 32 and is charged by water under pressure through a pipe 21, valve 19 and pipe 21a which increases the loading of the prop already provided by oil under pressure in the main chamber 27 forced through hose 29 and pipes 25, 23 by air pressure in the reservoir piston 13 supplied through a pipe 20, valve 19, and a stub pipe 20a. The water in the chamber 28 is released by a valve in a pipe coupling 18 and the oil in the chamber 27 is returned to the reservoir by a valve in a casing 22 in which there is also an automatic relief valve. In a modification, Figs. 3, 4 (not shown), the piston 32 has a coaxial cylindrical part guided in a bore at the lower end of the pipe 25 which is connected by a bore in the piston 32 with the pressure chamber 27. In Fig. 5, the auxiliary chamber 54 is in a head 14 sliding on the top of the prop piston 13 and has a rubber lining 55 vulcanized to both parts and is supplied with water through a pipe 58. The reservoir in the piston 13 is in two parts 26, 39 connected by a passage 41 in a plate 40 carrying the valve mechanism. A relief and release valve 52 is provided for the main pressure chamber 27 and a release valve 45 for the pressure chamber 54. Excessive upward movement of the head 14 opens a valve 63 by a chain 62 to release water.
Patent GB-1524561-A (GB)
Title: Disposable bedpan
IPC: A61G9/00
Filed: 1975-07-25
Abstract: 1524561 Bedpans SV KUNTER & M HARRISON 25 July 1975 [25 Feb 1975] 31289/75 Heading A4H [Also in Division B8] A disposable bedpan comprises a collapsible bag 1 formed from a flexible waterproof material, e.g. a plastics material, and a collar 3 of soft foamed plastics material for engagement with the skin of a patient during the use to ensure a snug fit, a flexible stiffening wire 5 being embedded in the collar to facilitate adjustment of the opening of the bag. The bag is preferably transparent and includes a transverse perforated sheet 6 of flexible material extending parallel to the bottom 7 of the bag to obstruct the passage of solid material.
Patent GB-305738-A (GB)
Title: Improvements in electric secondary batteries or accumulators
IPC: H01M10/12
Filed: 1928-09-21
Abstract: 305,738. Joel, H. F. Sept. 21, 1928. Absorbents; electrodes; separators; cells.- Storage battery electrodes are covered with a winding C of coir which keeps the active material in place and also absorbs a quantity of electrolyte and facilitates the escape of gas. The cell may be filled with electrolyte in the form of jelly or the coir may completely fill the cell. A space R may be provided below the electrodes to receive free electrolyte which is absorbed by capillary action in the winding C. The cell may be closed by a double lid B having gas vents V as described in Specification 136,282.
Patent GB-601643-A (GB)
Title: Improvements in or relating to the bleaching of cellulose
IPC: D21C9/10
Filed: 1945-11-21
Abstract: Cellulose fibres are bleached by subjecting them in aqueous suspension to a sequence of treatments comprising a chlorine treatment in acidic solution followed by a treatment with an alkaline solution in the absence of an oxidizing agent, the chlorine treatment being carried out in the presence of a dissolved nitrogen compound having at least one hydrogen atom attached directly to a nitrogen atom.  The treatment with the alkaline solution may be followed by a second chlorine treatment in acidic solution and one or both of the chlorine treatments is or are carried out in the presence of the nitrogen compound.  A suitable pH for the chlorine treatment is from 1.5 to 4.5. Nitrogen compounds specified are ammonia, aniline, toluidine, methylaniline, benzylamine, diphenylamine, dimethylamine, methylamine, ethylamine, ethanolamine, acetamide, formamide, butyric amide, urea, methyl urea, ethyl urea, diphenyl urea, diethyl urea, urethanes, thioureas, hydroxylamines, hydrazines, guanidines and chloramines.  The amount used is ordinarily from 0.2 to 10 parts per million, bases on the weight of the solution, but the use of amounts equivalent to from 0.1 to 100 is referred to.  The following examples are given: (1) Cotton linters which have been digested with dilute caustic soda are made into a 3 per cent slurry with water, and there are added 0.06 per cent of sulphuric acid and an amount of ammonium hydroxide equivalent to 4 parts per million calculated on the weight of the slurry.  Calcium hypochlorite is then introduced at 86 DEG  F. to bleach the linters, after which they are treated at 145 DEG  F. with sodium hydroxide at a concentration of 0.015 per cent.  The acid-hypochlorite-ammonia and alkaline steps are repeated, and finally a third acid-hypochlorite-ammonia step is given.  (2) The first example is repeated, but the acid-hypochlorite-ammonia treatment is carried out at 56 DEG  F. with various amounts of ammonia and the final treatment is with a solution containing 0.01 per cent of oxalic acid.  (3) Caustic-digested unbleached cotton linters are made up into a 2.2 per cent slurry and there are added 0.05 per cent of sulphuric acid and 47 parts per million of ammonia, based on the weight of solution.  Calcium hypochlorite is added to bleach the linters which are then washed and treated with 0.015 per cent of sodium hydroxide at 145 DEG  F., and again treated with acid-hypochlorite-ammonia and washed.  (4) Caustic-digested unbleached cotton linters are treated as in (3) except that the sequence of acid-hypochlorite-ammonia and alkali steps is repeated once.  (5) Alkali-digested unbleached linters are made up into a 3.0 per cent slurry and treated at 43 DEG  F. with 0.05 per cent of sulphuric acid, 4 parts per million of ammonia, and sufficient sodium hypochlorite to give an equivalent chlorine concentration of 0.02 per cent.  They are then treated with 0.015 per cent of sodium hydroxide at 143 DEG  F., washed, and finally treated with 0.02 per cent of oxalic acid, washed and dried.
Patent GB-971549-A (GB)
Title: Improvements in printed circuit windings for electrical rotating machines
IPC: H02K3/26
Filed: 1961-08-31
Abstract: 971,549. Printed circuit windings for planar air-gap electrical machines. SOC. D'ELECTRONIQUE ET D'AUTOMATISME. Aug. 31, 1961 [Sept. 8, 1960], No. 31411/61. Addition to 923,070. Heading H2A. In a printed circuit A.C. winding, for an electrical rotating machine of the flat annular air-gap type, comprising two sets of an even number of flat half-turn conductors 11, 13, 14 bonded to the opposite faces of a flat annular insulating carrier, the conductors being uniformly distributed and shaped to form a series wave winding by appropriate face-to-face connections 213, 214 between the ends 113, 114 thereof, a number of conductors arranged in pairs registering from one face to the other and within an arc of a circle have the end connections 214 omitted and some of these conductors have other face-to-face connections 314 which are radially and circumferentially displaced from the conductor ends 114 in order to provide a number of separate coils. The connections are by hole metallization through the carrier and in the two-phase winding shown each phase is formed by two separate coils ending in wiring terminals E 1 , S 1  &c. Specifications 902,295, 931,654 and 948,923 also are referred to.
Patent GB-355101-A (GB)
Title: Improvements in winding handles and methods of securing hand grips thereto
IPC: G05G1/08
Filed: 1930-10-20
Abstract: 355,101. Axially rotatable endhandles. COLLARO, C., 111, Sutherland Avenue, Maida Vale, and COLLARO, Ltd., Culmore Road, Peckham, both in London. Oct. 20, 1930, No. 31427. [Class 61 (i).] A hand-grip is secured to a crank-handle 2 by a member 8 in a recess in the end of the grip having prong portions 10 which, after passing over the reduced portion 4, are pressed into the groove 5.
Patent GB-1106576-A (GB)
Title: Metal vaporization crucible with upstanding walls for confining and condensing vapor
IPC: C23C14/24
Filed: 1966-07-13
Abstract: <PICT:1106576/C6-C7/1> A crucible 10 for use in metal vapourization comprises a metal receptacle 11 having a lining 12 of a refractory material, a side-wall 15 incorporating an entry port 16 with collimating ring 17 for a beam of electrons from a gun 14 which impinge on top of the charge 13 thus heating and vapourizing the charge.  The side-wall 15 at least partially encloses the space above the crucible and allows free ascent of vapour from the charge in a generally vertical direction.  A substrate 19 to be coated with metal is conducted across the top of the wall 15, the metal vapour boiling off the surface of the molten charge 13 to form an ascending cloud which reaches the substrate 19 and condenses thereon to form a coating on the lower surface thereof.
Patent GB-652623-A (GB)
Title: Improvements in or relating to pulse generators
IPC: H03K3/04
Filed: 1947-11-27
Abstract: 652,623. Pulse generating circuits. PHILIPS ELECTRICAL Ltd. Nov. 27, 1947, No. 31432. Convention date, Sept. 16, 1946. [Class 40-(vi)] A pulse generator comprises a multi-grid valve in which a control and screen grid are coupled as a class B or C reaction oscillator whose frequency is determined by a tuned circuit and in which the screen grid is capacitively coupled to a further grid in the valve to form a transition oscillator which is periodically excited by pulses of space current set up by the reaction oscillator. In this way the repetition frequency and phase of the generated pulses is rendered highly stable. The Figure shows a circuit for producing pulses of very short duration in which a pentode valve P has the grids 1 and 2 connected by the tuned circuit 6, 7 and the coupled inductor 8 to oscillate in class B or C condition the frequency of which may be controlled by the crystal 20. The network 9, 10 is proportioned so that the voltages on the grid 1 and " oscillator anode " 2 are slightly displaced from 180 degrees out of phase so that at the beginning and end of the positive half-cycles of voltage on grid 1 a pulse of current passes through to the screen grid 2 the potential of which falls. This fall in potential is fed via capacitor 14 to the suppressor grid 3 and the valve is rapidly cut-off by normal transitron action, the current pulse at the anode shock exciting its resonant load circuit which is preferably tuned to a very high frequency. The output pulses thus have a repetition frequency determined by the resonant circuit or crystal of the reaction oscillator and a duration determined by the resonant frequency of the tuned anode circuit of the valve. The steepness of the flanks of the output pulses is increased by the inductor 12 which is tuned by its stray capacity to a very high frequency. The negative-going output pulses at the anode of the valve P are reversed in polarity and shock-excite the tuned circuit 21, 25 to generate a heavily damped sine wave the first positive going peak of which unblocks valve T. The pulse at the anode of valve T shock-excites the tuned circuit 26, 27 which is tuned to a higher frequency than that of circuit 21, 25 and a positive going output pulse is obtained, the negative going portion being damped by diode D. In this way pulses of very short duration are obtained. Specification 583,630 is referred to.
Patent GB-945904-A (GB)
Title: Improvements in or relating to partitions
Inventor: HESKETH-JONES JOHN
IPC: E04B2/80
Filed: 1961-09-01
Abstract: 945,904. Building panels. SHEARWATER Ltd. Aug. 23, 1962 [Sept. 1, 1961], No. 31455/61. Heading E1B. A wooden partition panel is formed with a peripheral frame 10c closed by sheets 10a, 10b, two opposite edges of the panel being formed with tongues 10d of a width half the thickness of the panel and with a depth of rebate equal to a quarter of this thickness. In a partition the channels formed at abutting tongues receive screwed on cover strips 16 and suitable corner posts and wall posts 25 are provided.
Patent GB-655606-A (GB)
Title: Enclosure pressure control mechanism
IPC: B64D13/04
Filed: 1946-10-23
Abstract: 655.606. Control of motors. GARRETT CORPORATION. Oct. 23, 1946, No. 31503. Convention date. Oct. 29, 1945. [Class 38(iii)] [Also in Group XXIX] In a system for automatically maintaining a fixed pressure diffierential between the inside and outside of an enclosure 11, Fig. 1, such as an aircraft cabin (see Group XXIX), the pressure differential is set by a reversible D.C. motor 47 adjusting a spring 39 biassing a bellows 29. To lower the pressure differential, a manually operated switch 67, 70 is closed and motor 47, including field winding 74, is energized to effect adjustment at full speed until either switch 67, 70 is opened or the motor circuit is broken automatically by a limit switch 56 comprising conducting segments 57, 58 driven by motor 47. To raise the pressure differential, switch 67, 72 is closed and motor 47, including field winding 77, is energized, through a rotary interrupter 76 comprising a V-shaped contact 85 driven by a D.C. motor 86, to effect adjustment at a speed determined by the setting of a contact 88 of the rotary interrupter until either switch 67, 72 is opened or the motor circuit is broken by limit switch 56.
Patent GB-882001-A (GB)
Title: New colouration process for cellulose textile materials
Inventor: BERRIE ALISTAIR HOWARD
Filed: 1959-09-16
Abstract: Cellulose textile materials are dyed or printed from an aqueous medium with a water-soluble azo dyestuff of the formula <FORM:0882001/IV (c)/1> wherein E represents the residue of a coupling component which contains one or more water solubilising groups, such as sulphamyl, carboxylic acid or sulphonic acid groups, and m and n each represent 1 or 2 and may be the same or different, the materials also being treated, before, during or after the application of the dyestuff, with an alkali, and subsequently heated or steamed. Specified alkalis are sodium or potassium hydroxide, an alkaline earth metal oxide or hydroxide, sodium or potassium carbonate or bicarbonate, di- or tri-sodium phosphate, sodium borate and sodium silicate.  The dyebath may contain the usual adjuvants such as urea, nonionic or anionic wetting agents, glaubers salt, common salt and sodium alginate.  The printing paste may contain sodium-m-nitrobenzene sulphonate and thickeners, such as starch, British gum, gum tragacanth, cellulose ethers, sodium alginate or the emulsion thickeners of Specification 524,803.  When applied separately, the alkali is applied from an aqueous solution which may also contain sodium chloride, sodium sulphate or potassium chloride. When the dyestuff contains diazotisable, aromatic hydroxyl or keto-enol groups or metallisable systems, the coloured material may be subsequently subjected to diazotisation and coupling, or coupling, or metallisation.  The dyestuffs are made by diazotising, for example, 2 : 4-dichloro-2 : 4-dibromo-or 2 : 4-difluoro-5-nitroaniline or 3 : 5-dinitro-4-chloroaniline and coupling with a phenol, naphthol, acylacetarylide, para-coupling arylamine, 5-aminopyrazole, 5-pyrazolone or an arylazo compound, containing one or more solubilising groups, and when a para-coupling arylamine is so-employed, the resulting monoazo dyestuff may be diazotised and coupled with a coupling component. In examples, the dyestuff employed is 1-amino-7-(21 : 41-difluoro-51-nitrophenylazo) - 8 - naphthol - 3 : 6 - disulphonic acid.  The Provisional Specification refers also to the use, in general, of dyestuffs of the azo, anthraquinone, o-nitro-diarylamine and phthalocyanine series containing a halogenophenyl radical in which the halogen radical is activated by the presence of at least one electronegative group such as a trifluoromethyl, sulphonic acid, fluorosulphonyl, sulphamyl, sulphonic ester, aliphatic or aromatic sulphonyl, carboxylic acid, carboxylic ester, amide, nitrile, keto or nitro group.
Patent GB-467337-A (GB)
Title: Improvements in or relating to means carried by automobile vehicles for illuminating the path or road followed by the same
IPC: B60Q1/18
Filed: 1935-11-14
Abstract: 467,337. Supply systems for vehicle lamps. MATHA, H. Nov. 14, 1935, No. 31565. Convention date, Nov. 15, 1934. [Class 38 (iv)] Switching control.-In motor vehicle road lighting systems in which the ordinary headlamps P and the laterally directed headlamps p for use on curved roads are each provided with full and dim filaments or bulbs, the auxiliary headlamps are supplied through interrupters operated by relays responsive to the switching on of the full or dim filaments in the main headlamps, thus preventing leakage of current to earth through unused filaments. The full beam filaments or the dim filaments in the ordinary headlamps P are connected to the battery 25 according to whether switch arm 22 engages contact B or A. The corresponding filaments in the auxiliary headlamps p are also rendered available for use by the energization of the corresponding relay 26, but are not switched on until lever 20, connected to the steering wheels, is deflected to one side or the other so as to supply that lamp which will illuminate the road on the inside of the curve. Relay 26 closes switch 27 between the battery 25 and the corresponding filaments in lamps p and also opens corresponding contact 52 or 51. When steering switch 20 completes the circuit to earth, contact 27 energizes the filament in one of the lamps p, but the opening of contact 52 or 51 prevents current from leaking to earth through any other filament. A switch 33 may be provided for switching either of the auxiliary head lamps on or off independently of the steering switch. This switch may be operated with the turning signal switch. Either or both of the auxiliary headlamps may be switched on manually. In a modification both auxiliary headlamps are energized on operation of the accelerator pedal or the brake pedal, but such operation may only be possible when switch 22 is in one of its two positions. The Specification as open to inspection under Sect. 91 comprises also a modification in which only one relay 26 is employed. This subjectmatter does not appear in the Specification as accepted.
Patent GB-487405-A (GB)
Title: Improvements in or relating to automatic steering gear
IPC: G05D1/02
Filed: 1936-11-18
Abstract: 487,405. Photo-electric apparatus for steering. GENERAL ELECTRIC CO., Ltd. (Chance, B.) Nov. 18, 1936, No. 31577. [Class 40 (iii.)] [Also in Group XXXV] In a system for automatically controlling a rudder motor in accordance with changes in the relative position of a beam of radiant energy and devices sensitive thereto caused by deviation of a craft from its course, screens 18, Fig. 3, cause the exposure of a photo-electric cell to increase as a light beam is deflected. The cell is connected to operate a variable resistance in series with the motor 14 in accordance with the output. A thermionic valve amplifier may be interposed in the cell circuit. In a modification, Fig. 5 (not shown), photocells are energized in succession by the moving beam to change the resistance in steps. To maintain the energization of the motor when the beam passes beyond the cells the last cell operates a switch which is latched closed, the latch being freed by the preceding cell when the beam returns to it. The valves may be grid biassed so as to act as " off " and " on " relays. The output circuits of the valves may be transformer coupled to the electromagnets so as to operate them only on a change in yaw.
Patent GB-894901-A (GB)
Title: Improvements relating to the removal of hydrogen sulphide from industrial gases
Inventor: REEVE LEWIS
IPC: C10K1/30
Filed: 1957-10-07
Abstract: 894,901. Purifying gases. UNITED STEEL CO.'S. Ltd. Oct. 8, 1958 [Oct. 9, 1957], No. 31583/57. Addition to 719,056. Class 55 (2). In a modification of the process of the parent Specification for removing sulphur compounds from gases, the oxide is regenerated at a temperature between 600‹ and 1000‹ C. The temperature in the regenerating zone may be controlled to not more than 850 ‹ C. to avoid sintering of the oxides; control may be effected by the use of cooling coils in the regeneration zone or by diluting the air used for regeneration with an inert gas or by adding inert materials such as sand or crushed brick to the circulating solids.
Patent GB-835032-A (GB)
Title: Improvements in or relating to nozzles for jet propulsion purposes
Inventor: MORTLOCK JAMES OSWALD
IPC: F02K1/40
Filed: 1956-10-18
Abstract: 835,032. Jet-propulsion nozzles. ROLLSROYCE Ltd. Oct. 9, 1957 [Oct. 18, 1956], No. 31793/56. Class 110 (3). In a jet-propulsion nozzle comprising a tubular wall with a series of box structures circumferentially spaced around and projecting inwardly from the inner surface of the tubular wall to form a series of gas paths arranged so as to give a reduced noise level as compared with a normal frusto-conical nozzle, the box structures are shaped so that the flow area decreases from adjacent the upstream ends of the box structures to the nozzle throat and are attached to the tubular well with freedom for expansion between the wall and box structures. The frusto-conical wall 10 is reinforced internally by a series, e.g. six, box structures 11. Each box structure 11 is formed by a pair of side walls 11b, a base 11a and a third side wall 11c lying close to the tubular wall 10. A blanking wall 13 and internal stiffeners 15 are also provided. Some of the stiffeners 15 maybe extended as at 15a to divide the box into a number of compartments and holes 24 may be provided to balance the pressures on the walls. V-shaped strips 14 attached to the walls 11b slidingly engage sheet-metal apex pieces 16 attached to the inner surface of the tubular wall 10, so as to allow for axial displacement. The downstream ends of the boxes are attached to the wall 10 by bolts 17 which also secure a bracket 18 to the wall 10. The bracket 18 is attached by struts 19 to a relatively cool casing 20. This casing may be the outer casing of the engine, the wall of a by-pass duct or a wall separating the jet nozzle from the by-pass duct. At their radially inner ends the boxes are provided with lugs 21 which engage U-shaped straps 22 in a central tube 12. Radial slot 23 in the lugs allow for radial expansion. Specifications 802,123, 811,455, 812,167 and 814,136 are referred to.
Patent GB-324706-A (GB)
Title: Improvements in electric insulators
IPC: H01B17/20
Filed: 1928-11-01
Abstract: 324,706. Austin, A. O. Nov. 1. 1928. Insulators, - Insulators for high potential conductors are provided on their upper surfaces with one or more dielectric barriers for the purpose of increasing the flash-over voltage, and passages are provided in the barriers to allow drainage. Preferably the arrangement of the drainage passages is such as to avoid a direct radial discharge over the insulator surface. In one embodiment of the invention, Fig. 2, the barriers 16 are segmental in shape and over. lap so as to provide drainage passages 15. 17. Alternatively, tangential holes may be formed in the barrier. A further embodiment is shown in Fig. 6, which comprises' a series of concentric barriers 25, with drainage apertures 26 disposed in staggered relation. The arrangement shown in Fig. 8 comprises a barrier 27, 28, 29 with drainage apertures 29', 32, 33 through which electric discharge is minimized by the provision of neighbouring high potential members 30, 31, 34.