baber/WOPTO huggingface dataset:
Patent GB-1325796-A (GB)
Title: Photopolymerisable compositions
IPC: C08L67/06
Filed: 1971-06-15
Abstract: 1325796 Esterified cellulose ether compositions SHINETSU CHEMICAL CO 15 June 1971 [17 June 1970] 27996/71 Headings C3A and C3F [Also in Division G2] Photopolymerizable compositions contain at least one photopolymerizable unsaturated compound, at least one photosensitizer and at least one ester of a polybasic acid with a cellulose ether of the general formula R<SP>1</SP> m R<SP>2</SP> n A where R<SP>1</SP> is a group of the formula -R-(OR) p -OH in which R is a butylene or propylene radical and p is 0 or a positive integer, R<SP>2</SP> is a hydrogen atom or a methyl or ethyl radical, m and n are positive integers and A is a cellulose residue. Specified polybasic acids are phthalic acid, tetrahydrophthalic acid, hexahydrophthalic acid, trimellitic acid, succinic acid, maleic acid and glutaric acid. Specified unsaturated compounds are acrylic acid, methacrylic acid, α-chloroacrylic acid, acrylamide, methacrylamide, N-hydroxyethyl acrylamide, ethylene glycol diacrylate, diethylene glycol diacrylate, triethylene glycol diacrylate, ethylene glycol dimethacrylate and unsaturated polyesters obtained by the polycondensation of a polyol with a polybasic carboxylic acid. Photosensitizers specified are benzoin, benzoin methyl ether, benzoin ethyl ether, α- methylbenzoin, dibenzyl, diacetyl, dephenyldisulphide, eosin and thionin. The cellulose ethers may be esterified by reacting them with the polybasic acid anhydrides in an organic acid medium in the presence of an anhydrous alkali metal salt of acetic acid catalyst.
Patent GB-518596-A (GB)
Title: Improvements in or relating to materials for taking impressions for dental or other purposes
IPC: A61K6/90
Filed: 1938-09-26
Abstract: 518,596. Plastic compositions. AMALGAMATED DENTAL CO., Ltd., and WILDING, S. W. Sept. 26, 1938, No. 28015. [Class 70] A plastic composition, particularly for taking impressions for dental purposes, consists of a solution of an alginate mixed with calcium sulphate. To increase the time of set, either the calcium sulphate may be dehydrated by heating to temperatures above 200‹C. a longer time of set being obtained with higher temperatures, or a small proportion of a soluble salt of an acid which forms an insoluble or sparingly soluble calcium salt, such as sodium carbonate, ammonium citrate, sodium oxalate or potassium phosphate may be added. Fillers such as powdered asbestos, china clay, ground silica or precipitated chalk may also be added.
Patent GB-363008-A (GB)
Title: Improvements in or relating to shoes and the like
IPC: A43B5/00
Filed: 1930-09-19
Abstract: 363,008. Boots &c. HORRELL, Ltd., C. W. and HORRELL, W. M., Rushden, Northamptonshire. Sept. 19, 1930, No. 28058. [Class 17 (ii).] Athletic and like wear; construction and fastening.-A supporting member 3 is secured on one or both sides of a boot or shoe, more especially those for sports wear, at the waist, e.g. by stitching 4, and extends lengthwise of and across the instep with lacing eyelets 5 or other means at its free end by which it may be drawn up to cause the shoe to fit closely around the arch and instep of the foot. The supporting member is preferably of the shape shown and if provided on one side is placed on the inner side of the shoe. The shoe upper 1 is preferably in one piece with a reinforcing strip 2 at the rear, and the instep portion may be substituted by one or more portions of pliable leather 6 underlying the members 3 when the shoe is fastened. The lower portion of the shoe may be constructed as described in Specification 337,528, [Class 17 (ii), Boots and shoes, Construction of].
Patent GB-985995-A (GB)
Title: A semiconductor arrangement
IPC: H01L29/00
Filed: 1961-08-02
Abstract: 985,995. Semi-conductor devices. TELEFUNKEN PATENTVERWERTUNGSG.m.b.H. Aug. 2, 1961 [Aug. 5, 1960], No. 28078/61. Heading H1K. In order to facilitate the attachment of electrodes to a high-frequency transistor the device is made from a PN wafer, a P (or N) region being alloyed into the P (or N) zone of the wafer and a boundary of N (or P) type being formed beyond the alloyed region by post alloy diffusion. As shown in Fig. 2 a wafer of P type germanium about 40 Á thick is diffused with arsenic to provide an N type zone 2 and a residual P type zone 1 into which a leadgallium and arsenic pellet, about 200 Á across, is alloyed to form a P type emitter region 3. By diffusing the arsenic out of the alloy a base region 4 about 2 to 3 Á thick is formed. An emitter electrode is alloyed on to the region 3 and an annular collector electrode is alloyed on to the zone 1. The base zone 2 is etched to provide a mesa portion into which the base electrode is alloyed.
Patent GB-737776-A (GB)
Title: Guard bearing
IPC: B61F15/22
Filed: 1953-10-13
Abstract: 737,776. Railway-vehicle axle bearings. NATIONAL MOTOR BEARING CO., Inc. Oct. 13, 1953 [April 28, 1953], No. 28181/53. Class 12 (1). Means for preventing a railway-vehicle axle journal 11 from contacting the sides of an axle box 13 when an upper bearing brass 12 becomes displaced comprise a pair of J-shaped auxiliary bearing members 31, 32 disposed in the axle box and slightly spaced from the lower part of the journal 11. The members 31, 32 are held in position by springs 39 housed in recesses 40 at their upper ends, or alternatively by a member disposed in the gap between their lower ends. The ends of the members 31, 32 may be chamfered to facilitate their insertion in the box. Each bearing member 31, 32 comprises two outer portions 44, 45 and a bearing surface 30. A member 41 threaded into a bore 42 may be used to facilitate assembly of each bearing member.
Patent GB-824889-A (GB)
Title: Improvements in or relating to colour television receivers
Inventor: RIBCHESTER ERIC
IPC: H04N9/68
Filed: 1957-09-06
Abstract: 824,889. Colour television. GENERAL ELECTRIC CO. Ltd. Aug. 26, 1958 [Sept. 6, 1957], No. 28196/57. Drawings to Specification. Class 40 (3). Relates to the automatic gain control of the chrominance channel in a colour television receiver of the kind adapted to operate with a transmission comprising a luminance signal, one or more chrominance signals and a sound signal, each being transmitted as modulation of a carrier wave and the chrominance carrier frequency or frequencies being relatively close to the sound carrier frequency but appreciably more remote from the luminance carrier frequency. According to the invention, the amplification of the chrominance signal is controlled in inverse relationship with the mean amplitude of the sound carrier. The invention is described as applied to a receiver for N.T.S.C.-type signals where the chrominance carrier is spaced 800 kc/s. from the sound carrier and 2.66 mc/s. from the luminance carrier. The composite signal, after reception in common radio-frequency and intermediate-frequency stages, is detected in separate luminance, chrominance and sound channels. The output of the luminance detector is applied to a conventional automatic-gain-control circuit to derive a voltage which is applied to control the gain of the common radio-frequency and intermediatefrequency stages, whilst the output of the sound detector, in accordance with the invention, is applied to a second automatic-gain-control circuit to derive a voltage which is applied to control the gain of an amplifier in the chrominance channel. This second voltage also controls the gain of the sound channel.
Patent GB-1508698-A (GB)
Title: Programmable card actuated lock and programmer therefor
IPC: G07C9/00
Filed: 1976-07-08
Abstract: 1508698 Electronic locks J W CANNON 8 July 1976 [26 Sept 1975] 28428/76 Heading E2A [Also in Division G4] A card - operated programmable access - control device includes an electronic memory having a permit code section and a void code section, a programmer (claimed separately) for storing in the memory also being provided. When a magnetically - coded card is inserted into the access - control device, reed switches sense therefrom an individual code, a master code and card presence. If the master code agrees with one built into the device, presence of the card causes power to be supplied to the rest of the circuitry wherein the individual code addresses a permit bit and a void bit in a ROM i.e. read - only memory (or an erasable memory could be used). If the permit bit is set but the void bit is not set, a door strike solenoid is energised. A hand - held programmer used for setting bits in the ROM has a projecting tongue which is inserted in place of the card and operates the reed switches for master code and card presence. Thumb wheels provide the address for the ROM and two buttons control setting of the permit bit and void bit respectively. One of three lamps (permit, void, clear) is lit to indicate the stored states using three diodes with different thresholds to convert the two memory bits to one - out - of three form. Setting of bits is done via the memory outputs.
Patent GB-500816-A (GB)
Title: Improvements in and relating to screening apparatus
IPC: B07B1/42
Filed: 1938-04-14
Abstract: 500,816. Sifting-apparatus. WILLIS, T, and WADDLE PATENT FAN & ENGINEERING CO., Ltd. April 14, 1938, No. 28449/37. [Class 117] Screening-apparatus comprising one or more screens is characterized in that the screens are inclined and slidably reciprocate un horizontal guides, and means are provided for suddenly arresting the movement when the lower end of the screen is leading In the arrangement shown in Fig. 1, two sets of screens 5, 6 are inclined in opposite directions and are mounted in troughs supported by rollers 44 on horizontal guides. The screens 10, 11 in the upper trough are of graded mesh, the ovensize materials being delivered to shoots 13, 14 repectively. The member 9 acts as u haffle. The material passing through the screen11 is collected hy the base 8 and passes by way of the opening 18 and deflector 17 into the second trough which may contain one or more superposed screens 19 and a collecting plate 21 leading to suitable receptacles or conveyers. The driving arrangements for the screens consists of a shaft 24 carrying double-lobed cams 25 with radial steps 26 engaging lugs 27 carried by the screening troughs. Tension springs 29 adjustable as to tension and direction of pull, hold the abutments against the cam faces. Abutments 31, 32 on the screen frames engage adjustable fixed abutments 33, 34, to produce a shock when the spring tension is released by the rotation of the cams. The stop adjustment is provided by interposed wedges 35. In a modification, Fig. 2 (not shown), the rotary cams are replaced by endless chains carrying wedge-shaped members co-acting with abutments on the screens. The screen arrangement comprises three sets of screens, the upper two sets serving to screen out the larger sizes and deliver the fines to the lowest set which has a number of .superposed fine screens of graded mesh. The screens may be mounted on inclined links and actuated against gravity by the cams. An alternative construction is shown in Fig. 3, in which the movement of the screens is obtained by an eccentric 62 and connecting rod 61 made in two telescoping parts with an interposed cushioning spring. An abutment 64 on the screen is brought against a fixed stop 63 within the limits of the throw of the eccentric the excess movement of which is taken up by the interposed spring.
Patent GB-1464278-A (GB)
Title: Antifogging agent for a photographic silver halide emulsion
IPC: G03C1/34
Filed: 1974-06-26
Abstract: 1464278 Photographic silver halide material KONISHIROKU PHOTO INDUSTRY CO Ltd 26 June 1974 [28 June 1973] 28449/74 Heading G2C A photographic silver halide material contains, in the silver halide emulsion layer or a layer adjacent thereto, an antifoggant which is an inorganic or organic acid salt of nitron i.e. 1:4-diphenyl-3:5-endoanilino-4:5-dihydro-1:2: 4-triazole of the Formulae:- Salts specified are the hydrochloride, hydrobromide, nitrate, perchlorate, thiocyanate and acetate.
Patent GB-682874-A (GB)
Title: Improvements in or relating to cultivators, harrows and hoes
IPC: A01B63/24
Filed: 1949-11-08
Abstract: 682,874. Agricultural implements. GARRETT & SONS, Ltd., G. J., and GARRATT, B. G. Nov. 8, 1950 [Nov. 8, 1949], No. 28641/49. Class 6(i) An expanding cultivator comprises a main beam 1 and a pair of side-members 9 arranged one on each side of the beam 1, all three members being fitted with cultivating tools 11, 12, and the side-members being pivoted at their rear ends 8 to a bracket 10 carried by - the beam 1 and having adjustable retaining means at their front ends so that they may be set at various angles. The retaining means comprises upper and lower pairs of links, 15, 16, pivoted to pins 17 at the front of the members 9, the lower pair 16 being received in a clamp 24 slidable along the beam 1. The upper links 15 are slotted longitudinally and are received in a clamp 19 carried by a bracket 18 attached to the beam 1. The beam 1 also carries a standard 5 attached by parallel links 30, 31, to a superstructure 32, 44, which is secured to a tractor tool-bar by a clamp 33. The standard 5 includes a horizontal limb 4 carrying an adjustable depth-wheel 35. The whole cultivator is therefore floatingly suspended by the links 30, 31, from the superstructure 32, 44, the rear end of which is bifurcated and receives slidably between its limbs 44 a bifurcated standard 56 upstanding from the beam 1. The arrangement of the links 30, 31, and the superstructure forms the subject of. Specification 682,883.
Patent GB-423816-A (GB)
Title: Improvements in or relating to electric motor controlling systems
IPC: H02P7/34
Filed: 1933-10-17
Abstract: 423,816. Control of D.C. motors. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and CHUBB, A. A., c /o General Electric Co., Stoke, Coventry. Oct. 17, 1933, No. 28653. [Class 38 (iii)] The output of a Ward-Leonard generator G employed for lifts, is restricted by means of an impedance B in the output circuit connected to the grid of a thermionic valve VB, the anode current of which controls the grid of another valve VA controlling the current in the generator field GF. The grid of the valve VA is controlled through a transformer T by electromagnetic step-by-step switches operating as described in Specification 423,805, and when the generator output exceeds a certain value, the valve VB discharges and controls the grid of the valve VA through an additional secondary 3 of the transformer T so that increase of the generator field is prevented. In a modification, Fig. 2, (not shown), a direct-current system for the field GF is employed. In a further modification the valve VB is a screened-grid valve, and its controlling anode current is coupled through an additional transformer with the grid circuit of the valve VA. In a still further modification, the valve VB acts as a shunt to the secondary of the transformer T. The generator G may be one supplying the field of a Ward- Leonard generator.
Patent GB-519219-A (GB)
Title: Improvements in or relating to filters for liquids particularly liquid-fuels
IPC: F02M37/22
Filed: 1938-10-03
Abstract: 519,219. Filters. EMANUEL, R. Oct. 3, 1938, No. 28716. Convention date, Sept. 15, 1938. [A Specification was laid open to inspection under Sect. 91 of the Acts, April 3, 1939.] [Class 46] A filtering device has one or more filter elements, each in the form of a drum with vertical sides of chamois leather or like material through which liquid fuel passes, the interior of the drum communicating with the outside of a casing by means of a vertical tube which extends through the drum and is perforated at its upper end. In the construction shown, the filtering element comprises a ring 1, to each edge of which is applied a sheet 3 of chamois leather or similar material. The sheets are secured by rings 2. The ring 1 is stiffened by an internal frame 1a, and is traversed by a pipe 7, perforated at one end. The filtering element is fitted into a shallow receptacle 11 provided with an inlet 22 for the liquid fuel, the filtered fuel being discharged through the pipe 7. A chamber 14 collects dirt and water retained by the sheets 3. A number of filtering elements may be placed in one receptacle, the extensions 12 of the tubes 7 being united into one collecting pipe.
Patent GB-1353395-A (GB)
Title: Process and device for the separation of particles of different shape
IPC: B01D21/24
Filed: 1971-06-18
Abstract: 1353395 Wet separation LONZA Ltd 18 June 1971 [15 July 1970] 28769/71 Heading B2H Solid particles of different shape but of similar weight, e.g. whiskers and spheroidal nodules consisting of the same material as the whiskers, are separated from one another by suspending the particles in a liquid, passing the suspension, without forming turbulence therein, into a space between 'two vertically spaced apart disc-shaped members at a point intermediate the periphery and' the centre of the disc-shaped members, forming a 2-20 mm. thick layer of the suspension between the discshaped members creating a difference in rotational speed between the two disc-shaped members and thus creating a velocity profile of the flow of the suspension between the discshaped members, whereby one type of particles, e.g. the nodules, due to the shape thereof, is carried to a lesser extent by the suspending liquid than is the other type of particles, e.g. the whiskers, and separates in the suspension from said other type of particles, said one type of particles being withdrawn centrally of the disc-shaped members and said other type of particles being withdrawn peripherally of the disc-shaped members. The suspension liquid may be water, acetone, an alcohol or an hydrocarbon. The disc-shaped members may be in the form of discs which may rotate at different speeds or in opposite directions. As shown, the disc-shaped members consist of a rotatable annular disc 11 and the annular bottom of a stationary vessel 13. The suspension of whiskers and nodules in a liquid is fed by means of a speed-adjustable pump 2 through at least one inlet 4 in the bottom of the vessel, preferably via a homogeniser 15 which is supplied with dilution liquid through a pipe 3 provided with a stopcock and a flowmeter. The disc 11 is rotated by a shaft connected to a motor via a ball-and-socket joint so as to maintain the disc at a constant distance throughout from the vessel bottom. The nodules pass with some of the suspending liquid through a central opening 5 in the bottom of the vessel into a settling vessel 6 and thence through a pipe 7 and a pump 16 to a filter 8 where the nodules are separated from the liquid. The whiskers and the remainder of the suspending liquid are discharged, through at least one peripheral tangential 10 constructed as an overflow and connected to, a filter or centrifuge to remove the whiskers from the liquid. The process may be continuous or batchwise and several separation steps may be connected in parallel. Examples are given.
Patent GB-287698-A (GB)
Abstract: 287,698. Willis, R. G. March 5, 1927. Cases with internal horns.-In gramophones and the like, particularly of the portable type., constructed with a and a hinged lid, the horn is coiled round within the lid and terminates with its mouth directed above the turntable with the lid in open position and its small end connected to an articulated tone arm adapted to be housed and held in a space in the lid at the side of the horn. Fig. 1 shows the hinged lid b in open position with a metal horn, Fig. 4, of rectangular section arranged therein at one side of a partition l<1> which caries a joint h by which the small end of the horn a is articulated to a tonearm c adapted to be held in the space i by a clip k. The horn is coiled round within the lid terminating in a forwardly directed mouth d. The horn space apart from the mouth may be covered by a metal sheet l.
Patent GB-1277062-A (GB)
Title: Reciprocable plunger mechanism
IPC: B23Q7/04
Filed: 1969-07-23
Abstract: 1277062 Endless and rotary conveyers AMERICAN CAN CO 23 July 1969 [25 July 1968] 28913/71 Divided out of 1277061 Heading B8A The invention relates to mechanism for engaging workpieces on plunger-like carriers of a rotary conveyer, and for stripping the workpieces from the plungers after a predetermined degree of travel of the conveyer. The subjectmatter is the same as that in the Specification 1,277,061, but the claims differ.
Patent GB-456294-A (GB)
Title: Improvements relating to safety inner tubes for pneumatic tyres
IPC: B60C5/08
Filed: 1935-10-19
Abstract: 456,294. Pneumatic tyres. WINGFOOT CORPORATION, Wilmington, Delaware, U.S.A. Oct. 19, 1935, No. 28928. Convention date, Jan. 19. [Class 144 (ii)] An inner tube for pneumatic tyres comprises an elastic outer wall 10, Fig. 1, and a substantially non-elastic inner wall 11, spaced therefrom at the tread portion, the two walls being connected together at the base portion 15, thereby forming two compartments 12, 13 which communicate by means of one or more small openings 14 arranged in the inner wall 11, so that if the outer tube 10 is punctured, total collapse of the tyre is delayed owing to the slow leakage of air from the inner compartment 13 through the opening or openings 14. The tube is provided with spaced projections 18 for preventing the wall 11 closing the opening to the valve 17 upon collapse of the tube. Similar projections may be provided at the openings 14. The wall 11 may be moulded with the tread-supporting portion flattened, as shown, or reversely arcuate. The pressure differences in the compartments under normal running conditions may be controlled by a valve which closes only when the pressure within the inner chamber exceeds that in the outer chamber by more than a predetermined amount. In a modification, Fig. 2, the flat base portion 23 of the tube is constructed with reinforced edges 22 of ordinary tyre-bead form.
Patent GB-275056-A (GB)
Title: Coal dust firing for steam boilers
IPC: F23C99/00
Filed: 1926-11-17
Abstract: 275,056. Steinmuller, L. Nov. 17, 1926. Arrangements of superheating tubes in boiler furnaces.-In a water-tube boiler, the lower part of the front wall of the combustion chamber is lined with radiation superheater tubes 41, Fig. 1, connected by a pipe 44 with a contact superheater 27, the superheated steam being led off at 42. A slide member 97, Fig. 6, is so arranged that it can be adjusted by chains passing over a winding drum 100 to cover part of the superheater tubes 41, thus varying the degree of superheat.
Patent GB-535713-A (GB)
Title: Improvements in or relating to electric lamps
IPC: F21L4/00
Filed: 1939-10-31
Abstract: 535,713. Cellulose-acetate and synthetic-resin articles. GOLDSTONE, M. H. Oct. 31, 1939, No. 29058. [Classes 2 (ii) and 2 (iii]) [Also in Group XI] In an electric torch or lamp, the lens or window b is made integral with an extension a which is screwthreaded as shown or slotted or otherwise adapted to fit over and be detachably secured to the body part of the torch or lamp. The fitting may be moulded or pressed from translucent or transparent synthetic resin or cellulose acetate.
Patent GB-1390137-A (GB)
Title: Ink absorbent member
IPC: C08J7/043
Filed: 1972-06-21
Abstract: 1390137 Coated sheet materials XEROX CORP 21 June 1972 [21 June 1971] 29066/72 Heading B2E [Also in Divisions C3 and G2[ Polycarbonate sheet material may be used to support an ink absorbent member which comprises a binder that is at least substantially transarent having dispersed therein an ink absorptive pigment exhibiting the same refractive index as that of the binder. The binder may be selected from polyacrylates and methacrylates, polyallyl diglycol carbonate, cellulose acetate, cellulose nitrate, an ionomer resin, polybutane, polyvinyl formal, polyesters, copolymers styrene with acrylates, styrene-butadiene copolymer and poly N-vinyl carbazole. The pigment may be SiO 2 , a silicate e.g. hydrated magnesium silicate or BaSO 4 .