baber/WOPTO huggingface dataset:
Patent GB-704991-A (GB)
Title: Improvements in or relating to power-operated screw-drivers and nut-runners
Inventor: HARRISON EDWIN JOHN
IPC: B25B23/06
Filed: 1951-05-31
Abstract: 704,991. Screwing-up screws and nuts. PYE, Ltd. May 30, 1952 [May 31, 1951], No. 12862/51. Class 83 (3)  In a power-operated screw-driver or nutrunner, screws or nuts from a hopper 4 are fed down a shoot 6 to a selector 9 on a spring- pressed sleeve 2 and are received between a pair of spring blades having jaws 8 forming a conical pocket which holds the screws or nuts for engagement by a driving bit 3. The selector comprises a U-shaped plate having- a T-slot 12 in the inner leg aligning with the shoot 6 to allow the screw in the selector to pass into the pocket in the jaws 8 when the tool is out of contact with the work and having a slot 13 in the outer leg with a tongue 14 which is withdrawn :from the shoot as the tool and shoot move downwards; and the sleeve is retracted by contact of the face 15 of the selector with the work, to allow a screw to pass into the space 11. Spring-loaded segments engage an internal flange at the top of the sleeve and are depressed by a key inserted through holes in the sleeve to allow its removal. The hopper4 is attached to the tool body and comprises a casing 18 with a  number of slots 19 round its periphery and a flanged backing-plate partly covering the slots except where it leads into the shoot ; a knob 22 on a spindle attached to the backing plate rotates or agitates the inner shell in order to feed the screws into the shoot. Pneumatic means may be incorporated with the hopper for feeding the screws into the shoot. The Provisional Specification states that the tool and the hopper may be pneumatically operated.
Patent GB-999680-A (GB)
Title: Rectifiers
Inventor: JENKINS ALEXANDER
IPC: H01L25/07
Filed: 1963-04-02
Abstract: 999,680. Semi-conductor rectifiers. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd. Feb. 11, 1964 [April 2, 1963], No. 12982/63. Heading H1K. In a rectifier of the type comprising a series of rectifying elements mounted on a spindle and spaced axially therealong by interposed spacers, the spacers are each formed of a sintered material consisting of graphite, aluminium, reduced titanium dioxide, copper, zinc, brass, nickel, silver or a combination of any of these materials. Preferably the spacers are made of sintered graphite containing metallic additives such as aluminium, copper, zinc, nickel or silver to control the resistivity, and an organic material such as powdered coal or pitch which carbonizes during sintering is also added to reduce the porosity of the spacers. The rectifying elements may be made of selenium.
Patent GB-882387-A (GB)
Title: 6ª--methyl-17ª--hydroxyprogesterone and esters thereof and process for their preparation
Inventor: CAMERINO BRUNO
IPC: C07J75/00
Filed: 1958-04-24
Abstract: 6a  - Methyl - 17a  - hydroxy - progesterone is prepared by oxidising 6b -methyl-allopregnane-3b  : 5a  : 17a -triol-20-one to 6b -methyl-allopregnane-5a  : 17a -diol-3 : 20-dione and dehydrating this with a strong alkali.  This process may be combined with esterification of 6a -methyl-17a -hydroxy-progesterone by treatment with the chloride and anhydride of an aliphatic or cycloaliphatic carboxylic acid containing at most 9 carbon atoms in the presence of p-toluene-sulphonic acid and treatment of the product with a dilute mineral acid so as selectively to hydrolyse any 3-enol-acylate which may have been formed; and/or with the preparation of the triol starting material by epoxidation of D 5-pregnene-3b  : 17a -diol-20-one ethylene glycol ketal to form 5a  : 6a -epoxy-allopregnane-3b  : 17a -diol-20-one 20-ethylene glycol ketal, treatment of this with a methyl Grignard reagent and subsequent hydrolysis.  Any 5b  : 6b -epoxide formed in the epoxidation process is removed by crystallisation procedures.  Examples illustrate all the above processes, the esters prepared being those of acetic, caproic, oenanthic and cyclopentylpropionic acids.  In the Provisional Specification other esterifying acids are also referred to.
Patent GB-352135-A (GB)
Title: Improvements in or relating to the elimination of electrical interference
IPC: H03F1/33
Filed: 1930-04-28
Abstract: 352,135. Preventing inductive disturbance. IGRANIC ELECTRIC CO., Ltd., 147, Queen Victoria Street, and PADDLE, L. H., 2, Burlington Gardens, Chiswick, both in London. April 28, 1930, No. 12999. [Class 40 (iv).] In a system in which the output of (say) a microphone or pair of microphones or an amplifier is led to a distant amplifier, an electrical mid-point of the output, e.g. the point between series connected microphones, the mid-point of an output transformer, the mid-point of a resistance shunting a microphone or transformer or, as shown in connection with a condenser microphone 15, the mid-point of an electrical circuit comprising condensers 17 and a resistance 18, is connected to an earthed point at the amplifier ahead, i.e. in the arrangements shown, to the filament circuit which may or may not be in actual connection with the earth.
Patent GB-631486-A (GB)
Title: Improvements in or relating to shears
IPC: B26B13/28
Filed: 1947-05-14
Abstract: 631,486. Pivots. PHILBECK CORPORATION. May 14, 1947, No. 13006. Convention date, Oct. 16, 1946. [Class 65 (ii)] [Also in Group XIV] A pivot for shears (see Group XIV) comprises in one form, a barrel-shaped sleeve 13 situated within tapered bushes 12, 12<SP>1</SP> formed in channel-shaped members 9 carrying the cutting-blades. A screw 24 passing through a flanged sleeve and through the barrel 13 enters a split, internally-threaded member 19 provided with a flange 17 having a dowel pin for preventing rotation. Fig 8 shows a modification in which a plain sleeve 30 is mounted between plain bushing members 31, 31<SP>1</SP> between which a washer 32 prevented from rotating by a pin 33 is interposed.
Patent GB-247803-A (GB)
Title: Improvements in gas manufacture
IPC: C10J3/00
Filed: 1925-05-19
Abstract: 247,803. Steere, F. W. May 19, 1925. Producers.-In water gas plant, a water spray 13 is provided at the top of the superheater 6 in order to supply steam for a " down run," and a second spray 20 is provided below the grate 8 for use during an " up run." The superheater is connected to a wash-box 7 by a pipe 19 fitted with a pivoted valve 18 which enables a connection to be made directly between the wash-box and the space below the grate. Reference has been directed by the Comptroller to Specifications 21028/92, 109,323, and 233,038.
Patent GB-628899-A (GB)
Title: Device for obtaining random selections
IPC: A63F5/04
Filed: 1947-05-15
Abstract: 628,899. Chance apparatus. BALDWIN, F. C. May 15, 1947, No. 13134. [Class 132 (ii)] Chance apparatus comprises a stationary support member 4, the upstanding rim of which is fitted with a ring 12 having struck up flaps 11 defining around the periphery of the device fourteen compartments 10 the bases of which are formed by a rotary member 7 and each of which contains a polyhedral die 15. The member 7 can be rotated by a knob 9 and has one or more projections on its surface to agitate the dice during rotation. A transparent cover 13 is marked with numbers identifying the compartments. The corners of the dice are well rounded.
Patent GB-792966-A (GB)
Title: Draw-off mechanism for circular knitting machines
IPC: D04B15/88
Filed: 1955-05-06
Abstract: 792,966. Circular knitting-machines VYZKUMNY USTAV TVARECICH STROJU A TECHNOLOGIE TVARENI. May 6, 1955 [May 6, 1954], No. 13180/55. Class 74 (2). Coacting fabric take-down rollers 3, 4 are carried by one arm of each of two levers 2 rockable about pivots 1a carried by a member rotating with the needle cylinder; and the other arms of the levers are subjected to the action of a spring 14 which resiliently counteracts the tendency of the rollers to climb the fabric. The roller 3 is slidable towards and away from the roller 4, to accommodate different thicknesses of fabric. Levers 6, connected each to an end of roller 3 through a friction ratchet, carry at their free ends rollers 7 which traverse a stationary circular track 8, the plane of inclination of which can be varied, so that the levers 6 are depressed against the action of return springs 10 and thus oscillated with an adjustable amplitude, to operate their ratchets alternately and so rack round the roller 3 and hence, through gears 27, the roller 4 also. The upward swing of the levers 6 may be adjusted by means of screws 11, which coact with stops 21; and so the speed of take-down can be varied. If a delay in fabric supply occurs, the rollers 3, 4 will climb the fabric and the arms 2 will therefore be turned about their pivots 1a in the direction of the arrow S, Fig. 3, to cause the screws 11 to abut earlier against their stops 21 and so reduce the working stroke of the levers 6. As the rollers climb the fabric, the second arm of each lever 2 depresses the forked end of a lever 13, pivoted at its other end 19, which forked end embraces a pin 18 at the end of one arm of a bell-crank lever 12. Each bellcrank lever-is thereby rotated so that its other arm engages the corresponding one of abutments 16 at the ends of the helical spring 14. That spring is thus compressed and, resisting equally the movement of the two levers 2, maintains them mutually parallel and the rollers 3, 4 horizontal. Each abutment 16 consists of two coaxial sleeves which can be telescoped, as desired, to set the initial compression of the spring 14, and held in the chosen position by a set screw. Compression springs 22 balance the weight of the draw-off rollers and their driving and adjusting means.
Patent GB-1192381-A (GB)
Title: Improvements in Water Heating Units
IPC: F24H1/52
Filed: 1966-03-25
Abstract: 1,192,381. Hot water boilers. JOHN WHITE. HOUSE & SONS Ltd., and P. M. WHITE. HOUSE. 22 May, 1967 [25 March, 1966], No. 13182/66. Heading F4A. A gas-fired boiler for heating water in a pair of systems, e.g. a central heating system with radiators, and a domestic hot water supply system, comprises a primary hot water chamber 12 with heat exchanger tubes 14 passing through for the passage of hot gases from a gas burner 33 to a flue 17. Hot water from tank 12 passes through pipes 22, 23 to the central heating system, and returns through pipe 16 and a pump 15 to a pipe 13 with side apertures to direct the return water over heat exchanger tubes 14. A secondary hot water chamber 10 surrounds chamber 12 and is connected to the domestic supply system through a pipe 19, secondary heat exchanger 18 and pipe 20. Secondary heat exchanger 18 comprises a finned pipe surrounding tubes 14. A thermostat 21 in chamber 12 controls a gas supply valve 25, the gas burner also having a pilot 29 with ignition equipment. For domestic hot water use only, the radiator circuit is closed and the water in chamber 12 recirculated through pump 15. Chamber 10 has an inlet 11 and an expansion pipe 10a, and pipe 23 has a connection to a header tank. Pump 15 may be controlled by a thermostat in the central heating system. A tray 36 catches condensation.
Patent GB-494499-A (GB)
Title: Improvements in and relating to electric fuses
IPC: H01H85/38
Filed: 1938-05-03
Abstract: 494,499. Fusible cut-outs. BRITISH THOMSON-HOUSTON CO., Ltd. May 3, 1938, No. 13214. Convention date, May 4, 1937. [Class 38, (i)] By the addition of a suitable substance the beads formed by the element fusing and sintering with the filling medium are rendered less resistant at first, the proportion of the substance then diminishing as the process continues so as to increase the resistance. The additional substance may be potassium silicate, aluminium oxide or an iron compound and it may be applied as a coating to the grains of the filler or to the fuse element itself. A conductor parallel to the fuse element and composed of iron may serve to furnish the additional substance.
Patent GB-800463-A (GB)
Title: Improvements in or relating to lubrication apparatus for machines or the like driven by compressed air
IPC: F16N7/34
Filed: 1956-05-01
Abstract: 800,463. Air line oilers. BECKMANN, P. May 1, 1956 [May 7, 1955; Dec. 12, 1955], No. 13318/56. Class 12 (3). An air line oiler comprises a hollow cylinder 1 adapted to be connected in a compressed air conduit by end bayonet locks 3, 5, which cylinder 1 embraces an oil container 6 from which oil is drawn into the stream of compressed air. The container 6 is located within the cylinder 1 by fins 7 and collars 8, 9. The cvlinder 6 contains a piston 12 having a rod 14 which passes with clearance 15 through a hole in the top cover of the cylinder. The lower end of the cylinder 6 converges to a neck 10 the lower end of which carries an adjustable nozzle provided with a filter cone. The oil container 6 is filled by immersing the end in oil and retracting the piston by means of the rod 14. The position of the piston indicates the oil content of the container 6. In a modification, a piston-rod 24 carries a valve 28 which shuts off the supply of air when the piston reaches the bottom of its stroke, and the oil supply is exhausted, thus preventing damage to the machine due to lack of lubrication. A filler connection 29 is disposed at the lower end of the container and comprises a hollow screw 31, the bore of which is closed at the end by a screw-plug 34.
Patent GB-133328-A (GB)
IPC: B63B23/36
Abstract: 133,328. Hyland, J. L. May 11, 1917. Boat-lowering cradles.-A launching-cradle is shaped to conform to the external contour of the boat and extends from the keel to some distance above the gunwale on one side of the boat. The skid members 2 and supporting-blocks 3 are faced at 5 with rubber or rope and are connected by cross members 4 spaced apart to receive the keel of the boat. Plates 6 secured to the members 2 are connected to a ring 8 by cables or chains 7. A link 11, connected by stays 13 and cords 12 to the upper parts of the side members, is adapted to receive a lever 10 connected by a cord to the cradle may be fitted with castors. In a modification, the plates 6 are extended to pass beneath the keel to connect the members 2 to blocks on the other side of the keel. Reference has been directed by the Comptroller to Specification 23176/13.
Patent GB-1072282-A (GB)
Title: Improvements in structural units for use in the production of skeleton structures
IPC: A47B47/02
Filed: 1965-03-30
Abstract: 1,072,282. Furniture frames. BAUSTAHLGEWEBE G.m.b.H. March 30, 1965 [March 31, 1964], No. 13398/65. Heading A4H. [Also in Divisions A6 and E1] A structural unit, for use in shelving, coat stands, toys, buildings, walls, balusters, lamp standards, fences, partitions, reinforced concrete or other skeleton structures, comprises four equal length, parallel rods 1 disposed with their adjacent ends at the corner of a square and interconnected at their ends, e.g. by welding, by plates 2, each plate 2 having a bore 3 extending axially of the unit to receive a screw for securing further units. The rods 1 may be of steel, wood or plastics material and the bore 3 is preferably threaded. A plurality of units may be interconnected at their ends by means of a connecting cube (Fig. 7 not shown) having threaded bores in each of its faces. Intermediate plates or cubes are provided to stiffen the unit between its ends and one such cube may have recessed corners (Fig. 3 not shown) to slidably fit within the rods 1 and to be clamped therein when further lateral units are secured thereto.
Patent GB-356142-A (GB)
Title: Improvements in or relating to motor vehicle clutch controls
IPC: B60K23/02
Filed: 1930-05-01
Abstract: 356,142. Operating motor vehicle clutches. SEIDENBERG, O., 8, Elsasserstrasse, Berlin. May 1, 1930, No. 13409. Convention date, May 1, 1929. Grant of Patent opposed. [Class 80 (ii).] In suction-type servomotor control systems for actuating motor-vehicle clutches, initial depression of the accelerator-pedal reverses a controlling- valve and releases the suction on one side of the servomotor piston to engage the clutch, but does not open the throttle, the piston being retarded by a dashpot action on closure of a valve actuated by the piston-rod shortly before full engagement of the clutch. The accelerator pedal 7 actuates the throttle 12 by a rod 13 with lost-motion 14 and a three-way shuttle-valve 18 by a rod 8 having lostmotion provision 31. When the pedal is in the position I, the engine is idling and the valve 18 puts the induction-pipe 9 into communication, through pipes 16, 15, with the actuating cylinder 2, causing the piston 17 to withdraw the clutch against its spring 22 through a piston-rod 23 and lever 21. On depressing the pedal to position II, the valve 18 closes the pipe 16 and opens the pipe 15 to atmosphere through passages 19, the air on the other side of the piston 17 escaping past a valve 29, which, towards the end of the stroke, is closed by a spring 28 when an adjustable tappet 24 on the rod 23 contacts with a collar 26 and displaces a spring-pressed spindle 25, the trapped air thereafter issuing through a vent pipe 30 and adjustable nozzle 4. In this position, the engine can be used as a brake. Movement of the pedal between positions II and III controls the throttle, the rod 8 moving idly in the valve. A cock 5 is provided to cut out the servomotor.
Patent GB-935565-A (GB)
Title: Improvements in or relating to mounting arrangements
IPC: H05K7/12
Filed: 1961-04-13
Abstract: 935,565. Fastenings. GENERAL ELECTRIC CO. Ltd., and S. H. G. TAYLOR. April 13, 1962 [April 13, 1961], No. 13415/61. Class 44. Means for mounting a component 1 on a flat member 17 comprises a continuous loop 11 of material a middle portion 13 of which embraces the component and the two looped ends 15 of which pass through slots 18 in the flat member, a semi-circular rod 19 being passed through the loops and then forced away from the flat member by screws in the rod which engage indents in the flat member.
Patent GB-1358593-A (GB)
Title: Optical read-out system for diffraction grating patterns
IPC: G02B27/44
Filed: 1971-05-06
Abstract: 1358593 Diffraction systems EASTMAN KODAK CO 6 May 1971 [8 May 1970] 13443/71 Heading G2J [Also in Division G4] An optical reader for a film or plate carrying data in the form of superimposed diffraction grating patterns has a light source, an optical system and means relatively moving the film or light. In one embodiment light from source 5 is reflected by mirror 23, passed through polyhedral prism 7 having plane surfaces 9, reflected by mirrors 17, 19 and passed through a cylindrical lens 13 to form a line of light on film 1 carrying short parallel data tracks 3 extending longitudinally of the film. Collector lens 21 directs the image of the diffraction grating pattern into spaced positions 33, 35. A position 34 corresponds to the absence of a diffraction pattern and positions 33, 35 correspond to a first order image. Mirror 23 may be rotated about vertical axis A to transversely scan the film as shown by successive scanning beams 27-29. The prism 7 deflects the light beam in a vertical direction. The light may be supplied to the film obliquely Fig. 4, (not shown) so that the first order diffraction images are centred about a line perpendicular to and passing through the film.
Patent GB-679908-A (GB)
Title: Process for the production of alkali metal pyrophosphate peroxy-hydrate
IPC: C01B15/16
Filed: 1951-06-06
Abstract: Alkali metal, especially sodium, pyrophosphate peroxyhydrate, is produced by dissolving 1 mol. neutral anhydrous pyrophosphate in at least 3 mols. strong hydrogen peroxide, e.g. a 35 per cent aqueous solution, and evaporating, preferably under vacuum, until shortly before the first solid particles separate, whereupon additional quantities of anhydrous neutral pyrophosphate are added to bind the free hydrogen peroxide present in the supply solution, to produce a solid product which may be dried at 100-110 DEG C.
Patent GB-238032-A (GB)
Title: Improvements in illuminated signs
IPC: G09F13/14
Filed: 1924-06-02
Abstract: 238,032. Beville, W. J. June 2, 1924. Signs; Name plates and the like. - An illuminated sign is provided with light diffusing means consisting of a front sheet of prismatic glass and a rear sheet of fluted glass. As applied to a box-sign the design plate c, Fig. 2, is backed by a sheet of prismatic glass d, while a sheet of silvered fluted glass e is arranged so as to reflect light on to the design from a lamp b. A multiple line sign has a corresponding number of reflectors. In a modification a multiple line sign c, Fig. 4, has divisions k formed as metallic reflectors, the outer glass sheet d being prismatic and the inner sheet e being fluted. The ridges on the two glass sheets are arranged across one another. The prismatic glass sheet may be backed by a sheet of muranese, opal faced or like glass. The invention may be applied to name plates and the like.
Patent GB-1425526-A (GB)
Title: Method of plasma arc welding
IPC: H05H1/36
Filed: 1973-03-21
Abstract: 1425526 Welding by fusion VSESOJUZNY NAUCHNO - ISSLEDOVATELSKY PROEKTNO-KONSTRUKTORSKY I TEKHNOLOGICHESKY INSTITUT ELEKTROSVAROCHNOGO OBORUDOVANIYA 21 March 1973 13519/73 Heading B3R [Also in Division H5] In plasma-arc welding together metal sheets, e.g. of stainless steel, or aluminium, magnesium or alloys thereof, covered with oxide film, current pulses are alternately applied to a cleaning electrode 2, in a nozzle 9, and a welding electrode 1, in a nozzle 10, the pulses to the electrodes 2, 1 being respectively of reverse and straight polarity and the electrodes and nozzles being so sized that the straight, welding, current density is at least 30% greater than that of the reverse, cleaning, current density. Preferably, the reverse polarity nozzle 9 is fed with argon and the straight polarity nozzle 10 is fed with an argon-helium mixture. For thin sheets with an oxide film thickness of 100- 300 Á, the duration and/or current amplitude of the reverse polarity pulses may be at least 30% greater than these of the straight polarity pulses; and for thick sheets with an oxide film thickness up to 100 Á. the duration and/or current amplitude of the straight polarity pulses may be at least 30% greater than these of the reverse polarity pulses.
Patent GB-820216-A (GB)
Title: Improvements in caravans
Inventor: HANSFORD ROBERT BERNARD
IPC: B62K27/02
Filed: 1956-05-02
Abstract: 820,216. Side-car caravans; rest bars; stub axles. SURREY SIDECARS Ltd., and HANSFORD, R. B. July 24, 1957 [May 2, 1956], No. 13532/56. Classes 108(1) and 108(2) A motor cycle side-car which may be expanded to form a caravan, comprises hinged panels 71, 72, 73 which form the side-car floor and near side but which may be unfolded to provide floor panels 71, 72 and a side panel 73, an end door 12 which may co-operate with a separate panel 13 to form a rear wall, a nose section 10 which together with a pivoted panel 11 may form the front wall, and a roof section which may be raised on telescopic rods 22. The space between the raised roof and the lower body panels is closed by unrolling canvas covers 25. In a modification the panel 73 may be pivoted down to act as a floor panel and additional awnings are provided. A cupboard and shelves and a folding table may be provided within the body panels. Rest bars. The caravan is supported on removable transverse members 14 provided with V-shaped pivoted elements 16 one of which embodies an adjusting screw 17. Movable stub axle. The wheel 6, Fig. 4, is mounted on a stub axle 64 contained in a bracket 61 pivoted about a pin 62 to the side-car chassis 5. In the travelling position the bracket 61 is held vertically by a bolt 67 passed through holes 63 and 66.