baber/WOPTO huggingface dataset:
Patent GB-209407-A (GB)
Title: Presser mechanism for sewing machines
IPC: D05B29/02
Filed: 1923-12-27
Abstract: 209,407. Singer Manufacturing Co., (Assignees of Grieb, A.). Jan. 8, 1923, [Convention date]. Presser-bars; presser-feet.-A pivoted main presser-foot is employed in conjunction with an auxiliary presser-foot which is independently supported and is located in rear of the needle to feed the stitch-chain when no work is in position, as between successive sacks in a sack-sewing machine. A main foot 20 is pivotally mounted' at 21 on a block secured to a presser-bar 25 the downward movement of which is limited by a collar 32 to prevent unnecessary pressure on the feed-dog 16 when no work is in place. The auxiliary foot 33 which lies to the rear of and partly to one side of the foot 20 is supported by a bar 36 and co-operates with a section 17 of the feed-dog to feed the stitch-chain. The bars 25, 36 are under the tension of adjustable bladesprings 26, 37. The lifting device, for the presserbars comprises a. link 48 moved by a finger-piece 50 and having thereon a shoulder 47 which engages collars 42, 43 on the presser-bars. Specification 114,251 is referred to.
Patent GB-923966-A (GB)
Title: Photographic camera
IPC: G03B19/04
Filed: 1959-09-22
Abstract: 923,966. Photographic cameras; winding levers. DURST S.p.A. FABBRICA MACCHINE APPARECCHI FOTOTECNICI, and J. DURST. Sept. 22, 1959 [Sept. 25, 1958], No. 32298/59. Class 98 (1). In a photographic camera including winding means for film advance and/or shutter tensioning and a rotary hand lever for operating said winding means, co-operating means are provided on said lever and on the camera body for causing simultaneous axial movement of the lever with respect to the camera body during rotary movement thereof, so that at the end of its winding stroke the lever is at a greater spacing from the camera body than at the commencement. As shown, a winding lever 1 pivotally mounted on a flanged bush 7 is connected to a winding spindle 6 by a pin 4 which passes through the spindle and engages in an axial slot in the handle 1. On pivoting the lever, it rides up on sawtooth-shaped projections provided on a flange 2 of the camera and simultaneously tensions a spring 5 which later returns the lever to its original position. In modifications, the projections on flange 2 may be replaced by a cam or a screw-thread.
Patent GB-342294-A (GB)
Title: Improvements in systems for the combustion of pulverulent fuels, and in burners therefor
IPC: F23D1/00
Filed: 1929-10-24
Abstract: 342,294. Pulverulent - fuel burners. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and HAGUE, H. G., 1, Inglewood Road, Crayford, Kent. Oct. 24, 1929, No. 32325. [Class 75 (i).] Pulverulent fuel in an air-free condition is introduced by a pipe 8 in to the throat of a burner tube 4 and sucked through the burner tube by an air blast from a central nozzle 7, the burner tube being surrounded by a casing 5 to which secondary air is supplied under pressure by a pipe 14 and issues from an annular outlet 6. The burner tube 4 is of converging-diverging section and the inlet pipe 8 for the pulverized fuel is connected to the throat of the burner tube 4 behind the air nozzle 7 through which the primary air is supplied from an inlet 13 drawing the pulverized fuel from the pipe 8 and projecting it into the combustion chamber. An adjustable conical baffle 9 arranged in front of the air nozzle promotes turbulence in the mixture and breaks up lumps formed by aggregation of the fuel. The baffle is mounted on a rod 10 screwed through a bush 11 in the burner casing and adjusted by a handle 12.
Patent GB-359726-A (GB)
Title: Improvements relating to name plates or signs
IPC: G09F7/10
Filed: 1930-10-29
Abstract: 359,726. Interchangea,ble signs. BAKER & SONS, Ltd., F., and BAKER, F., 28, St. Paul's Square, Birmingham. Oct. 29, 1930, No. 32435. [Class 3 (ii).] In an interchangeable unit sign, the letter plates are first threaded in order upon one or more wires or rods, and are then placed in a frame the edges of which overlap the assembled plates. Fig. 2 shows letter plates 2 provided with sleeves 4 through which rods 3 are threaded. After the letters are assembled, they are placed in the frame 1, which is provided at the rear with grooves to accommodate the sleeves 4. Lugs 6 formed on the frame 1 are then bent over to engage the end letters and retain the complete set in position. In a modification, Fig. 11, detachable end members 1a are provided ; these are formed with lugs 6 to retain the letters in position, and are attached to the frame 1 by front parts 11 shaped to engage the ridges formed by the grooves 5 and a wire member 9 the ends 9a of which slip inside the flanges 10. The device may be .arranged to carry more than one row of letters. The letters are preferably formed by filling embossed depressions in the plates 2 with enamel, and blank plates may also be provided.
Patent GB-820013-A (GB)
Title: Improvements relating to electromechanical wave filters
IPC: H03H9/50
Filed: 1956-10-24
Abstract: 820,013. Electromechanical wave filters. GENERAL ELECTRIC CO. Oct. 24, 1956 [Oct. 25,1955],no. 32436/56. Class 40 (8). An electromechanical wave filter comprises two toroidal cores 10, 12 of magnetostrictive material, e.g. nickel or ferrite, each carrying an independent winding 11, 13 respectively, and a mechanical link 14 interconnecting the cores so that vibrations in a radial mode induced in core 10 are imparted axially through the link to the core 12 to produce vibrations in a radial mode therein. The shape of the toroids provides a suitable closed magnetic circuit and they may be operated using remanent flux for bias. The mechanical link may comprise a multisection mechanical filter, Fig. 2 (not shown).
Patent GB-1202659-A (GB)
Title: Process for the production of polyamides containing a cyclohexane ring
IPC: C08G69/16
Filed: 1969-06-26
Abstract: 1,202,659. Polyamides. KUREHA KAGAKU KOGYO K.K. 26 June, 1969 [26 June, 19681, No. 32442/69. Heading C3R. 4 - Aminomethylcyclohexanecarboxylic acid is homopolymerized or copolymerized with caprolactam at 180‹ to 370‹ C. in a closed system in the presence of 10 to 150 wt. per cent of water. The process is stated to give a polymer wherein 75% of the structural units are in the trans form regardless of the steric configuration of the monomer. The polymers may be melt, wet or dry spun into filaments. In examples a predominantly (80%) cis isomer of the acid is homopolymerized or copolymerized with 61 wt. per cent caprolaotam plus benzoic acid as viscosity stabilizer (a) according to the invention and (b) for comparison, in the absence of water. Reference is made to U.S. Patent 2,910,457.
Patent GB-485277-A (GB)
Title: Method of and apparatus for the production of fancy gauze fabrics on looms with underdriven picking motion
IPC: D03C7/00
Filed: 1937-11-25
Abstract: 485,277. Picking-mechanism. POLLOCK, W. Nov. 25, 1937, No. 32484. [Class 142 (iii)] In an underpick loom for weaving fancy gauze fabrics with a twisted double thread warp, with a gauze reed which rises and falls each pick, two or more (x) picks of a ground weft inserted by one shuttle are followed by a pick of a contrasting ground weft inserted by a second shuttle, a rotary picking control cam being used giving 2(x+1) picks per revolution, the part 1 causing two consecutive picks to be made from one side of the loom, and the part 6 two consecutive picks from the other side of the loom, whilst the parts 2, 3, 4, 5, 7, 8, 9, 10 cause a pick to be made alternately from the two sides of the loom.
Patent GB-846274-A (GB)
Title: Improvements in or relating to ferromagnetic ferrite bodies
IPC: C04B35/26
Filed: 1956-10-25
Abstract: 846,274. Magnetic compositions. STEATITMAGNESIA A.G., and STEATITE RESEARCH CORPORATION. Oct. 25, 1956 [Oct. 25, 1955], No. 32511/56. Class 38 (2). A ring of magnetic ferrite exhibiting a rectangular hysteresis loop is made by adding 0.1- 5% by weight of cobalt oxide to mixtures of oxides which form on sintering, nickel-zinc or magnesium-zinc ferrites having the constitutions shown in Figs. 5 and 6, grinding, screening, compressing sintering at above 1000‹ C. and slowly cooling to room temperature in at least 12 hours, or rapidly cooling and reheating to 600‹ C. and slowly cooling, the cooling being carried out while a magnetic field is produced circumferentially in the core. The magnetic field, which may be applied during heating as well as cooling may be produced by passing through a toroidal winding on the core or a single conduit passing through the ring direct current, or a discontinuous current from intermittent condenser discharges. The intermediate stage of the core having a constructed hysteresis loop is referred to.
Patent GB-447280-A (GB)
Title: Improvements in or relating to electrical oscillation generators
IPC: H03B5/10
Filed: 1934-11-14
Abstract: 447,280. Valve generating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London, and WRIGHT, G. M., Broom Hall, Woodham Ferrers, Essex. Nov. 14, 1934, No. 32791. [Class 40 (v)] In order to stabilize the frequency of a valve oscil. lator, the back-coupling link between the anode and grid circuits comprises a number of parallel-tuned circuits 1c. 4c weakly coupled together in cascade. Preferably the tuning - inductances are divided, as shown, and the midpoints connected through a common lead to earth. The arrangement is intended to offset the effect of variations in the phase of the pulses delivered from the anode of the valve to the back-coupling link.
Patent GB-1003309-A (GB)
Title: Novel derivatives of the pregnane series and their production
IPC: C07J43/00
Filed: 1962-06-08
Abstract: The invention comprises a 20-halogeno-methylene - 21 - halogeno - pregnane of the formula <FORM:1003309/C2/1> wherein M1 represents a hydrogen atom together with a hydroxy or acyloxy group derived from an organic acid having 1-18 carbon atoms, and the A ring is saturated; or M1 represents = O, and the A ring contains a 4(5) double bond; or M1 represents a lower alkoxy group and the A and B rings contain 3(4) and 5(6) double bonds, M2 represents hydrogen, = O, or a b -hydroxyl group; and X represents a halogen atom, and a process for the preparation thereof wherein a dimethanesulphonate of the formula: <FORM:1003309/C2/2> wherein R1 represents = O, or a hydrogen atom together with a hydroxy or acyloxy group derived from an organic acid having 1-18 carbon atoms; R2 represents two hydrogen atoms, = O or a hydrogen atom together with a b -hydroxyl group, Y is an aryl or lower alkyl group; and the A ring may contain a 4(5) double bond, is reacted with an alkali metal halide to form the corresponding 20-halogeno-methylene - 21 - halogeno - pregnane derivative, which is optionally reacted with an alkylating agent to form a corresponding 3-alkoxy enolate.  As alkylating agent there may be used ethyl orthoformate.  Specifications 1,003,307 and 1,003,308 are referred to.
Patent GB-872579-A (GB)
Title: Improvements relating to electron gun assemblies
Inventor: GASSON DENYS BROMLEY
IPC: H01J3/02
Filed: 1958-10-15
Abstract: 872,579. Electron beam apparatus. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Oct. 1, 1959 [Oct. 15, 1958], No. 32940/58. Class 39(1). An electron gun for large beam currents, e.g. in the production of focused beams for localised heating of a bombarded object, comprises a filamentary cathode 4 extending longtudinally within a slit 3 in a metal member 2 and adjustable bodily transversely of the plane of the slit to control the magnitude of the electron emission. The cathode 4 is detachably secured between two posts 5 and 6 which are slidable in holes provided in a block 1. The posts are moved axially by rotation of an insulated screw 12 which is threaded through a cross-head 11. The space above the insulating rings 7 and 8 may be oil-filled. More than one gun may be provided, each cathode wire being separately adjustable.
Patent GB-359738-A (GB)
Title: Improvements in boots and shoes and a method of making
IPC: A43B15/00
Filed: 1930-11-04
Abstract: 359,738. Boots &c. KELLNER, J. and SCHREIBER, D., (trading as KELLNER & SCHREIBER), 18, Friedmanngasse, Vienna. Nov. 4. 1930, No. 33135. Convention date, Nov. 5, 1929. [Class 17 (ii).] In a boot or shoe wherein a strip insole b, Figs. 4, 8, to which a sole d is attached, is sewn to an upper a, the insole is made in one or more pieces and is attached at its inner edge to the edge of the upper a by a seam c, as shown in Fig. 4. When the insole is turned down, it maintains the upper in shape for the attachment of the sole without necessitat:ng the use of a last or other shaping device. The sole is preferably cemented on.
Patent GB-1312678-A (GB)
Title: Schottky barrier diode
IPC: H01L29/47
Filed: 1970-07-08
Abstract: 1312678 Semi-conductor devices GENERAL ELECTRIC CO 8 July 1970 [30 July 1969] 33150/70 Heading H1K A Schottky barrier diode comprises a silicon N + type substrate 202 on which has been grown an N type epitaxial layer 206, a P + type annular region 210 formed in this epitaxial layer, and a metal rectifying electrode 218 on the surface of the epitaxial layer covering the region bounded by the annular region and extending into the annular region, the junction 208 between the epitaxial layer and the substrate over that region inside the annular region being much closer to the free surface of the epitaxial layer than elsewhere, the spacing between the junction 208 and the free surface here substantially corresponding to the minimum spacing between the junction 208 and the junction between the epitaxial layer and the substrate. The thickness of the epitaxial layer in this region may be further reduced by etching a depression in the surface over this region before provision of the rectifying electrode, Fig. 4, not shown. An ohmic electrode 204 is applied to the substrate and exposed surfaces are covered with an insulating layer 214.
Patent GB-325259-A (GB)
Title: Improvements in signs for vehicles and other purposes
IPC: G09F7/22
Filed: 1928-11-13
Abstract: 325,259. Bedford, F. Pilmore-, and Bedford, H. Pilmore-. Nov. 13, 1928. Road-traffic signals on vehicles. - A movable sign for automatically indicating the speed of a vehicle comprises a sheet 2 of metal &c. normally lying flat and hinged so as to be liftable, into a raised position by air currents. The sheet is shaped, as by upwardly curving its leading free edge, to facilitate its rising. The limit to which the sheet rises is determined by stops or by flexible connections 5. The sign may comprise a number of superposed sheets, the weights and the areas of the dished portions being such that the upper sheets are lifted at lower air speeds than are the under sheets. The sheets may rise to vertical position and be shaken down by its vibration when slowing down. The sheets may bear designs on one or both faces.
Patent GB-995976-A (GB)
Title: Single or multiple plate friction clutch acting as a vibration damper
IPC: F16F15/12
Filed: 1963-08-22
Abstract: 995,976. Slip couplings. G. PULS. Aug. 22, 1963 [Aug. 22, 1962], No. 33242/63. Headings F2C and F2U. A vibrating damping slip coupling or clutch has the torque transmission differing according to the relative position of clutch parts and the direction of relative rotation, and comprises annular clutch plates slidably splined to a driven sleeve 15 and frictionally engaging sets of members 11 which are pivotally mounted about pins 7 peripherally spaced around the coupling, the pivot pins being carried by the driving casing of the coupling. The members 11 can pivot between stops 21 provided on the casing, the different torque transmission when the direction of relative rotation reverses giving excellent damping of torsional vibrations. In order to damp small torsional oscillations to which the friction clutch does not respond, an elastomeric coupling may be provided comprising a sleeve 20 of elastomeric material vulcanized to the sleeve 15 and to a sleeve 17 operatively connected to an output shaft 18. The stops 21 for the members 11 and the pivot pin 7 may be resilient and may be formed similarly, the stops, for example, being formed by a bolt 22 surrounded by an elastomeric element 23 which is encased in a sleeve 21. In a modification the stops 21 are replaced by radially directed flexible stops which are secured at their radially outer ends to the driving casing, the inner ends co-operating with the members 11. In the modification shown in Fig. 7 the members 11 are biased to their central position by centrifugal weights 28 which are connected circumferentially by links 29 disposed alternately at the front and rear, the links 29 having slots 30 to allow the members 11 to pivot freely. As shown, the members 11 do not themselves frictionally engage the driving plates, but are provided with friction discs 32 which are rotatably mounted in apertures 31 in the members 11.
Patent GB-283870-A (GB)
Title: Improvements in or relating to glass blowing machines
IPC: C03B9/14
Filed: 1927-12-08
Abstract: 283,870. Soc. Anon. des Pavillons. Jan. 18, 1927, [Convention date]. Blowing. - Relates to a handoperated machine of the kind in which the charges of glass are settled in the parison mould by compressed air which is admitted above the glass through a cover plate that closes the open ends of the moulds. According to the invention, the sealing-face of the cover plate is perforated with holes which admit the compressed air to the mould but are too small to allow the glass to pass through them when the parison is blown up against the cover. The machine comprises a double parison mould 13 mounted on a table 2 above an air chamber 3, a removable ring mould 12 of a known type, and neck plugs 6 which are raised and lowered by a pedal 8. The cover plate comprises hollow conical plugs 14 perforated with small holes and yieldingly mounted on a hollow crosspiece 15 on the lower end of a tube 16. This tube is connected with a two-way cock 26 which is also connected with the air chamber 3 and with an air-feed pipe 24. In use, charges of glass are dropped into the mould and the cover plate is pressed on to the mould by means of a hand lever 19. The cock 26 is turned to the position to admit air to the plugs 14 whence it passes into the mould and packs the glass down into the ring moulds around the neck plugs 6. The cock is then turned to allow the air to escape from the moulds through a port 28 into the atmosphere. At the same time. pressure air is admitted to the chamber 3 to blow up the glass to fill the mould spaces.
Patent GB-1488733-A (GB)
Title: Hydrocarbon concentration sensor for use in engine exhaust gas
IPC: G01N27/12
Filed: 1975-08-11
Abstract: 1488733 Semi-conductor gas sensors NISSAN MOTOR CO Ltd and SHINYEI KAISHA 11 Aug 1975 [9 Aug 1974] 33407/75 Heading G1N In order to obviate the effects of temperature on a metal oxide semi-conductor gas sensor a p-type and an n-type semi-conductor sensing element are connected in a bridge circuit. A sensor for sensing unburned hydrocarbons in an engine exhaust includes a support member 12 of heat resistant and insulating material having an extension 12a on which are formed Pt, Au or Pd electrodes 14, 16, 18. A first, n-type semi-conductor layer 20 is formed between electrodes 14, 16 and a second, p-type, layer 22 is formed between electrodes 14 and 18. The electrodes 14, 16 and 18 are connected via leads 24 to two resistors so as to form a bridge circuit, Fig. 5 (not shown) with the conductor layers 20, 22 forming adjacent arms of the bridge. Any changes in the conductivity of the two layers 20, 22 due to temperature changes are cancelled out by the effect of the two other resistors of the bridge which are also arranged in the exhaust gas. Since the semi-conductor layers exhibit opposite conductivity characteristics with an increase in hydrocarbons the sensitivity of the device is increased. The layers 20, 22 may be coated with Al 2 O 3  and the device placed in an apertured housing. Semi-conductor materials. The n-type oxide may be a sintered mixture of three oxides the first being selected from ZnO and SnO 2 , the second from V 2 O 5  and Sb 2 O 3 , the third from Al 2 O 3 , Si O 2 , Cu 2 O, Pb O and Nd 2 O 3  which mixture may be doped with Mn, Pt and Pd. The p-type oxide may be a sintered ternary oxide of the Formula M 1   -x M' x M"O 3-y  where M is La or Sm, M' is Mg, Ca, Sr or Zr and M" is Cr, Ni or Co and x ranges from 0À1 to 0À8 and y ranges from 0 to 0À1, The oxide may be doped with Pt or Pd.
Patent GB-1017779-A (GB)
Title: Improvements in or relating to methods of producing metallised apertures in printed-wiring boards
IPC: C25D7/00
Filed: 1962-08-31
Abstract: <PICT:1017779/C6-C7/1> In a method of metallizing apertures 3, 3a in a printed-wiring board 2, the walls of the apertures are provided with thin conductive layers 4, a mask 5 of insulating material coated on one side with a layer 6 of conductive material is clamped to the board with the conductive layer 6 in contact with the printed wiring 1 on the board, the mask being provided with apertures 7, 8 which register with the apertures in the board, and layers 9, 10 of metal, e.g. Cu, are applied to the walls of the apertures by electrodeposition.  Board 2 and mask 5 may be of hard paper.  The apertures in board and mask may be circular, and the diameter of those in the mask may exceed that of those in the board by about 1 mm., as does aperture 8, so that layer 10 extends to the area of printed wiring 1 around the aperture 3a.  The wiring 1 may be formed by etching or electrodeposition processes.  The conductive layers 4 may be applied as a suspension of metal powder, e.g. Cu, Ag, in an organic binder, or as a graphite suspension, or metal may be deposited catalytically.  In order to avoid metal deposition between board and mask, the board may be provided around the border of the surface bearing the printed wiring with a continuous metal strip. When the board has printed wiring on both sides, two masks may be used, the board being clamped between them.  A suitable electro-deposition bath is obtained by adding to 250 gms. of CuSO4.5H2O and 60 mls. of H2SO4, sufficient water to produce 1 litre of electrolyte. Current density may be 6A/dm2.
Patent GB-1343936-A (GB)
Title: Narcotic antagonist compositions having prolonged activity
IPC: A61K9/00
Filed: 1971-07-16
Abstract: 1343936 Injectable alkaloid preparations ENDO LABORATORIES Inc 16 July 1971 [21 July 1970 2 March 1971] 33543/71 Heading A5B Long acting injectable narcotic antagonist preparations comprise as dispersion of particles of di-(N-allyl-7, 8-dihydro-14-hydroxy normorphinone) pamoate or di [N-(cyclopropylmethyl- 7,8-dihydro-14-hydroxy normorphinone] pamoate in a gel composed of a vegetable oil (e.g. peanut, corn, sesame or cotton seed oil) containing 0.1 to 5% w/v of an aluminium salt of a C 7-25  fatty acid, e.g. aluminium monostearate, the concentration of medicament being equivalent to 1 to 500 mg/ml of the corresponding hydrochloride. Other active materials may be present e.g. tranquilizers such as: chlorpromazine, molindene, chlordiazepoxide, glutethimide or pentobarbital; analeptics, e.g. picrotoxin or pentamethylene tetrazole; CNS stimulants, e.g. methylphenidate; narcotics and narcotic antagonists, e.g. methadone, meperidine or cyclazocine.