baber/WOPTO huggingface dataset:
Patent GB-321243-A (GB)
Title: Improvements in or relating to the photographic reproduction of images
IPC: G03C9/00
Filed: 1928-08-13
Abstract: 321,243. Morioka, I. Aug. 13, 1928. Enlarging, copying, and reducing.-Images having an incorrect ratio between their lateral and longitudinal dimensions, and obtained in series on a sheet in the photographic reproduction of an object in three dimensions as described in Specification 298,377, [Class 98 (ii), Photographic processes &c.], axe reproduced with a correct ratio between their dimensions by passing the sheet in front of an illuminated slit, and projecting on to a film arranged at an inclination to the sheet and travelling at a speed which varies inversely as the cosine of the angle of inclination. As shown, the sheet 1 passes before a slit 2 in a direction v, and is projected by a lens 3 on to a film 4 travelling over a slit 5 in a direction v<1>.
Patent GB-797730-A (GB)
Title: Improvements in or relating to rotary air or gas compressors
IPC: F04C27/02
Filed: 1955-08-15
Abstract: 797,730. Rotary pumps. SOUTHERN, J., FRANKLIN, A. C., and WORTHINGTONSIMPSON, Ltd. Aug. 15, 1956 [Aug. 15, 1955], No. 23404/55. Class 110 (2). In a multi-stage rotary gas compressor of the outwardly-sliding vane type having means for supplying lubricating, cooling or sealing oil to the working chambers, at least the high-pressure stage 2 is surrounded by a casing 10 and is provided with means, such as relief valves 21, for discharging excess oil to said casing. Oil is fed to each stage through passages, such as 24, 25, from the casing 10, the circuit incorporating a strainer and a cooler (not shown). The compressor is provided with an air inlet filter and silencer 53, inlet and outlet conduits 13-19 and a liquid separator 33 having float-actuated valve means 37, 38 for controlling the recirculation of the liquid. Valve means, responsive to the discharge pressure of the compressor, are provided to relieve the pressure in the casing, the said pressure being relieved when the compressor is stationary by a valve which is hand or spring controlled-or actuated by mechanical means responsive to the stopping of the drive or electromagnetic means controlled by the starting circuit of an electric motor.
Patent GB-209031-A (GB)
Title: Improvements in or relating to variable fluido-dynamic wings, such as for aeroplanes
IPC: B64C3/48
Filed: 1923-09-19
Abstract: 209,031. Magni, P. Dec. 30, 1922, [Comvention date]. Propelling by screw and like propellers.-The surfaces of a flexible propeller blade are constituted wholly or partially of plates adapted to slide over each other, the forward end of each plate being fixed to a cross-member and the rear end bearing on an adjacent plate, or on rollers fixed to the blade frame, either by the elasticity of the plate itself or by the action of springs connected to the plate. In one construction, Fig. 6, the elastic plates pb of the front portion of the blade are carried bv a frame B fixed to the main spar A, the plates pa of the central portion are pivoted to the spar sa<1> and sa<2>, and the plates pc of the rear portion are carried by a frame C pivoted to the spar at sa<3>. The frame C is actuated for warping the wing through levers l, lc, and a link bc from a cross-shaft M. In a modification, Fig. 10, the upper surface of the front portion is formed with overlapping plates pb<1>, pb<2> carried by cross-members sb<1>, sb<2> respectively. The member sb<1> is connected by a link bb<1> to the lever l and the member sb<2> is carried by a triangular frame b<2> pivoted to the spar A at sa<1> and connected by a link bb<2> to the lever l. Fig. 17 shows a similar construction in which the springs m are provided to pull on the inner sides of the plates. In a further modification, Fig. 16, a clutch, differential gear or equivalent mechanism is provided in the connection of the frame C to the lever lc to enable the rear portion of the wing to be moved by means independent of the shaft M to the position shown to act as a brake, passage F being opened widely to maintain stability during this braking operation. Specification 103,400, [Class 4, Aeronautics], is referred to.
Patent GB-1378078-A (GB)
Title: Pneumatic tube systems
IPC: B65G51/24
Filed: 1973-05-16
Abstract: 1378078 Pneumatic despatch tube junctions LAMSON ENG CO Ltd 16 May 1973 [18 May 1972] 23544/72 Heading B8A In a pneumatic despatch container system, at a junction between a stationary main tube and a secondary tube forming a branch therewith, the secondary tube supports a branch tube movable relative to the secondary tube in a direction parallel to the longitudinal axis of the branch tube into direct communication with the main tube. In the Figure, branch tube 8, preferably of plastics material such as nylon with a magnetic portion 9 at the end farther from the junction 4, is moved into the junction (to divert containers between the main tube 1 and the secondary tube 2), by a spring, and is retracted by energization of a solenoid 10. A similar tube 3 is associated with the main tube and is normally in the position shown, but is retracted by energization of solenoid 7 before tube 8 is moved into the junction. An alternative embodiment is shown in Fig. 2 (not shown).
Patent GB-495587-A (GB)
Title: Improvements in and relating to electric switches
IPC: H01H29/00
Filed: 1937-08-27
Abstract: 495,587. Interrupters. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 27, 1937, No. 23556. Convention date, Aug. 28, 1936. [Class 38 (v)] In a vibratory switch for controlling small currents such as from a thermocouple, in which it is important to prevent the formation of induced currents by stray magnetic fields, contact is made with mercury by a pair of contact points arranged closely together so as to enclose as restricted a loop as possible. In the form shown in Fig. 1, the contact arm 10 is pivoted in the flexible metal cap 9 of a glass vessel 8 and is operated by a rotary cam 11 so as to bring points 14, 141 into and out of mercury cups 15, 16, thereby making and breaking a circuit from thermocouples 4 to an amplifier 6. In a modification, Fig. 2, a single pool of mercury 20 bridges two concentric pointed conductors 21, 22.
Patent GB-314715-A (GB)
Title: Improvements relating to moving-coil loud speakers
IPC: H04R9/04
Filed: 1928-08-15
Abstract: 314,715. Baker, A. Aug. 15, 1928. Loud-speakers; diaphragms.-In a moving coil loud speaker of the type wherein the moving coil is mounted on a former arranged within the airgap of a " pot " magnet, a flexible washer for centring the former in the air gap is provided with a plurality of points contacting with the inner wall of the former and being adapted for radial adjustment. As shown in Fig. 1, the former 2 of the moving coil is centred in the air gap of a magnet 4 by a rubber disc 6 having a plurality of radial projections engaging the wall of the former. The radial pressure of the projections upon the former may be adjusted by a nut 14 which co-operates with a conical member 8 having a flange 7 engaging the disc 6. A conical diaphragm 1 attached to the former is centred by a plurality of threads 10, 11 attached to screws 12 which are adjustable in the member 8. In a modification, Fig. 4, radial adjustment of the centring disc 20 is effected by a washer 28 which is pressed more or less intimately with the disc by a sleeve 21 under the control of a nut 27 on a spindle 19. The sleeve 21 is screwthreaded externally and carries two adjustable rings 22 having radial projections 23. The centring threads 25, 26 of the diaphragm are attached to rubber caps 24 which are adjustably fitted upon the projections 23. The larger end of the diaphragm may be guided in a baffle board, if desired. The Provisional Specification describes arrangements wherein the radial pressure of a rubber or felt disc may be adjusted directly by a set screw and a ring of rubber or felt mounted in a groove in one or other of the magnet poles is adapted to co-operate with the inner or outer wall of the former.
Patent GB-761871-A (GB)
Title: Improvements in or relating to refractor members for lighting fittings
IPC: B26D1/00
Filed: 1953-08-26
Abstract: 761,871. Moulding light refractor members. GENERAL ELECTRIC CO., Ltd., and FERGUSON, H. M. Nov. 25, 1954 [Aug. 26, 1953], No. 23589/53. Class 87(2). [Also in Groups XI and XXIII] In the manufacture of a lighting fitting refractor bowl 1 in which the bowl 1 carries one or more sets of parallel arcuate prisms 5 arranged to direct light from a light source within the bowl in the required direction or directions the prisms 5 of each set are formed in one operation by rotating a cutting tool about an axis through the centre of the arcs on the surface of a plane flexible member 4 which is so shaped that it can be bent to the shape of, and attached to, a part of the side of the bowl 1. The invention also comprises the manufacture of a mould for making the lighting fitting refractor bowl 1 the manufacture including the steps of forming the prisms 5 in one operation by rotation of a suitable cutting tool through the centre of the arcs on the surface of a plane flexible master member 4, bending the member 4 to the shape of part of the side of the bowl 1 and using the bent member 4 to define the shape of the corresponding part of the mould in constructing the walls of the mould. Strips 7 and 8 are provided along the upper and lower edges of the member 4 so that when this member or the member moulded therefrom is in position in the bowl 1 the prisms 5 are completely enclosed. The whole refractor bowl or the arcuate prism portion to be mounted in the refractor may be made of transparent thermoplastic material. Specification 636,982 is referred to.
Patent GB-883675-A (GB)
Title: Improvements in and relating to the working of glass
IPC: C03B33/06
Filed: 1959-07-09
Abstract: 883,675. Glass working apparatus. DICHTER, J. July 9, 1959 [July 11, 1958], No. 23614/59. Class 56. Apparatus for shaping the ends of elongated glass tubes comprises means for advancing the tubes horizontally, step-by-step, in a direction normal to their length, to successive work stations, means located at a first of said stations for longitudinally shifting a tube to locate one end of it at a selected position, tube shaping means located at a group of subsequent work stations for shaping said one end of said tube, a means adjacent each of said subsequent work stations operable in synchronism with said transfer means to grip and rotate the tube while the tube is located at the work station and subsequently to release the tube to permit said transfer means to transfer the tube to the next work station. In the form shown tubes are carried on spaced arms 6. Arms 4, pivoted at 3 and carrying curved members 7, are reciprocated through links 8, 9 to lift the tubes one at a time on to members 11 which are adjustable relatively to the members 7 so that the latter can retain only the one tube required. This tube is fed into the first of a number of notches in two rails 15 which are mounted at their ends, on cranks 55 which lift them and carry the tube into the peripheral grooves of two continuously rotating aligned wheels 12, by frictional engagement with which the tube is moved lengthwise until one end engages an end stop, not shown. Successive rotations of the cranks 55 lift the tube into successive stations III, IV, V, VI, VII, VIII, &c., defined by adjacent pairs of rollers 31. At each station the tube is held in contact with the rollers 31 by a system of pressure rollers 39. Each roller is individually weighted, but the whole assembly is carried on a rod 47 which is lifted by a cam as each tube is moved from one station to the next. Different operations are performed, in the various stations, on the end of each tube located by the end stop. The tube is heated in stations III and IV and an end portion pulled off by axially moving pincers in station V, the sealed end is further heated in station VI, flattened in station VII and annealed in station VIII. Each tube is then transferred to wheels 67, similar to the wheels 12, by which its opposite end is located against a stop, after which a succession of operations may be performed on that end. The various burners are pivotally mounted and moved away from the tube ends as the tubes are moved from one station to the next.
Patent GB-376990-A (GB)
Title: Improvements in or relating to the manufacture of glass bands, tubes, rods or the like
IPC: C03B5/42
Filed: 1931-08-22
Abstract: 376,990. Glass manufacture. COMPAGNIE INTERNATIONALE POUR LA FABRICATION MECANIQUE DU VERRE (PROCEDES LIBBEY OWENS), 4, Chausee de Charleroi, Brussels.-(Assignees of Deutsche Libbey-Owens Ges. fur Maschinelle Glasherstellung Akt.-Ges.; Rotthausen, Gelsenkirchen, Germany.) Aug. 22, 1931, No. 23661. Convention date, Aug. 25, 1930. [Class 56.] Drawing.-The glass in the drawing-zone is protected from the action of external air currents and of dust by forming a screen of gas or vapour across openings around the drawing-place, the screen being formed by jets of gas directed outwards from the hot glass. In the construction shown in Fig. 1, the drawing-pot 4 is enclosed in a cover 5, and pipes 6 fitted with nozzles are fitted in the openings in the cover. Jets of gas or vapour from the nozzles are directed outwards and prevent the glass from being chilled by external air currents or from being contaminated by dust suspended in the air. In the construction shown in Fig. 3, a vertical screen of gas is formed by jets from a pipe 16 arranged horizontally across the upper edge of an opening. At the bottom of the opening, a duct 17 is provided to direct the gas currents outwards and to retain any condensate that may be precipitated when vapour is used to form the screen.
Patent GB-817852-A (GB)
Title: Improvements in or relating to tuner devices for radio receivers
IPC: H03J5/12
Filed: 1957-07-26
Abstract: 817,852. Centrifugal governors. GENERAL MOTORS CORPORATION. July 26, 1957 [Aug. 2, 1956], No. 23729/57. Addition to 814,500, [Group XL (c)]. Class 57. [Also in Group XL (c)] The speed of a radio tuner is controlled by a plate 182 mounted on a shaft 170 being forced by the centrifugal force of balls 188 contained in tapered grooves 190 in the side of a wheel 178 against a fixed friction surface 192. The force is opposed by an axial spring 184. Specification 649,360, [Group XL (c)], is referred to.
Patent GB-517852-A (GB)
Title: Improvements in apparatus for playing a game
IPC: A63F7/02
Filed: 1938-08-12
Abstract: 517,852. Controlling sales. HORNEMANN, A., and PRINTATOR, Ltd. Aug. 12, 1938, No. 23793. [Class 116] [Also in Group XV] An apparatus for a game of skill and particularly for use in shops to increase the sale of commodities comprises an inclined board up which a ball may be projected from a pivoted spring gun 16, and a cellular punch-board 6 covered by a perforated metal sheet 7-having upstanding bendable flaps 11 situated over the cells of the punch-board, the flaps being provided for the purpose of closing the corresponding cell after the entry and subsequent ejection therefrom, of a projected ball, thereby preventing a subsequently projected ball from entering the empty cell. As shown in Fig. 7, each cell of the punch-board contains a token . ball 10 of distinctive 'colour indicating the award due to the player. A perforated paper sheet 52 and a lower sheet 53 retain the balls. The metal sheet 7 has a larger perforation 57 the removed material forming a flap -11 of concave shape with a rectanguar slot 12. When a ball enters the opening 57, the shopkeeper depresses the flap 11 into theposition shown by broken lines, by means of a tool 13 thus closing the cell 51 and ejecting both the projected ball and the token ball. These balls then roll to an outlet near the spring gun. In a modified, board, the balls cannot be punched from the cells until a perforated slide below the punchboard has been suitably adjusted by means of a knob. The punch-board is readily removable, and a number of the cells of the board are accessible beyond the metal sheet 7 for selective use by an unsuccessful player.
Patent GB-599328-A (GB)
Title: Improvements in delay action electric switching systems such as, for use in aircraftfire extinguishing systems
IPC: A62C3/08
Filed: 1945-09-14
Abstract: 599,328. Time switches. VENNER TIME SWITCHES, Ltd., and HORGAN,, W. F. Sept. 14, 1945, No. 23801. [Class 38(v)] [Also in Groups XXI and XXXV] A delayed action switch comprises contact sets 30 and 31, 34 and 35, 39 and 40, actuated by cams 8, 9 driven by a spring 11 through a rack and pinion 6, 5, a gear train and escapement mechanism, also driven by the spring, controlling the speed of the cam shaft 4. The spring is " woundup " by pressing on an extension 7 of the rack, play in the bearings of one of the gears allowing automatic disconnection of the escapement during this operation. An armature 42, which carries contacts of a further switch 32, 37, 43 and which is acted upon by electromagnets 33, 41, locks the escapement when the magnets are de-energised.
Patent GB-1177153-A (GB)
Title: A Tuning Fork for Electromechanical Oscillators
Inventor: HORSTMANN KENNETH JOHN
IPC: H03H9/48
Filed: 1967-05-23
Abstract: 1,177,153. Piezo-electric generators; reciprocating motors. HORSTMANN GEAR CO. Ltd. 23 May, 1968 [23 May, 1967], No. 23820/67. Heading H2A. [Also in Divisions G3 and H3] A tuning fork has its vibrations maintained by using the amplified output of a piezoelectric element associated with the mounting clamp member to feed electromagnetic transducers associated with the tines. The U-shaped strip has straight portions 15, 16 forming the tines of the tuning fork and a curved portion 17 which is clamped between steel blocks 19, 20 which are secured together by support rod 21. A piezo-electric element 23 is secured to the face of one block 20 by means of a conductive adhesive, e.g. silver-loaded epoxy resin. When the fork vibrates the piezo-electric element will be bent to generate small voltages which are amplified and supplied to electromagnets 26, 27 whose windings are connected in series such that the e.m.f. adds when the tines vibrate oppositely. Alternatively, the electromagnets may provide the input signal and the piezoelectric element be arranged to give a mechanical output. Threaded rods 28, 29 are attached to the ends of the tines and provided with nuts 30, 31 respectively so that the frequency of oscillation can be adjusted.
Patent GB-517978-A (GB)
Title: Improvements in or relating to elastic thread and fabrics embodying such thread
IPC: D02G3/32
Filed: 1938-08-12
Abstract: 517,978. Yarns. CLAY, P. E. F. Aug. 12, 1938, Nos. 23825, 27950, and 31744. Drawings to Specification. [Class 120 (iii)] A composite thread comprising an elastic thread and an inelastic carrier thread with the elastic thread in a substantially completely relaxed condition is made by a process or method which comprises providing a supply of elastic thread in a state of complete relaxation and a supply of coarse thread, withdrawing the two threads simultaneously from their respective supplies in such manner as to maintain the elastic thread substantially in its fully relaxed condition, causing them to pass side by side on to a rotating bobbin or similar holder which, by rotation winds the two threads side by side on to it and subsequently withdrawing the two threads simultaneously and as one from the bobbin or the like; the two threads are then united by wrapping them with an inelastic covering thread or by doubling them together. Specifications 448,071 and 459,508 are referred to.
Patent GB-1080167-A (GB)
Title: Improvements in or relating to the production of halogenated benzene derivatives
Inventor: BURTON ROGER ANTHONY
IPC: C07C51/60
Filed: 1963-06-14
Abstract: 2,6-Dihalogenophenyl lithium compounds are prepared by reacting a m-dihalogenobenzene with a lower alkyl or aryl lithium compound in an inert organic solvent, the temperature of the reaction mixture being maintained at - 50 DEG  C. or lower.  Other 2,6-dihalogenophenyl compounds are prepared therefrom by conventional methods.  In Example 1, n-butyl lithium in tetrahydrofuran is reacted with m-difluorobenzene in tetrahydrofuran, and the solution of m-difluorophenyl lithium obtained is added to a slurry of solid CO2 in ether to form m-difluorobenzoic acid.  This is converted via the azide into 2,6-difluoroaniline.  In Example 2, 2,6-dichlorobenzoic acid is prepared.  In Example 3,2,6-difluorophenyl lithium is treated with N-methyl formanilide at - 50 DEG  C. and the product is hydrolysed to 2,6-difluorobenzaldehyde. In Example 4, 2,6-difluorophenyl lithium solution is reacted with trimethyl borate and the product hydrolysed to a boronic or boronic acid derivative which is oxidized by means of H2O2 to 2,6-difluoro-phenol. This is converted to 2-(21,61-difluorophenoxy)-ethylamine by reaction with chloroacetonitrile and reduction of the 2,6-difluorophenoxyacetonitrile formed with lithium aluminium hydride. The amine hydrochloride is refluxed with cyanamide and the product, treated with HNO3, yields 2 - (21,61 - difluorophenoxy)-ethyl guanidine nitrate. In Example 5, 2,6-difluorophenylacetophenone is prepared by the reaction of 2,6-difluorophenyl lithium with acetyl chloride and converted to its oxime.  In Example 6, 2,6-difluorobenzoyl chloride and 2,6-difluorobenzamide are prepared from 2,6-difluorobenzoic acid and the amide converted to 2,6-difluorobenzonitrile by means of thionyl chloride.
Patent GB-313366-A (GB)
Title: An improved camera shutter
IPC: G03B9/08
Filed: 1928-08-20
Abstract: 313,366. Matoussevitch, V. Aug. 20, 1928. Shutters with pivoting blades.-A shutter for a camera consists of an exposure member 1 and a light-tight actuating-lever 7 pivoted on centres- 2, 8 respectively on the lens cover 3, the upper surface of the lever 7 being cam-shaped and engaging a pin 6 on the member 1 so that when the free end of the lever is depressed against the action of its spring 13 the two members turn in. opposite senses about their pivots and move together across the lens aperture 4, the exposure aperture 5 in the member 1 being covered during this movement by the lever 7. When the member 1 has reached its set position, the cam surface of the lever 7 disengages from the pin 6 and the member 1 moves downwards under the action of its spring 10 to effect an instantaneous exposure. For time exposures, a pivoted stop 15 can bemoved into the path of the member 1, as in Fig. 8, to hold it in the open position and thus maintain the exposure until the lever 7 is released. The lever is formed with a slot 12 to permit it to pass over the pin 6 when it is released.
Patent GB-245524-A (GB)
Title: Improvements relating to electrical thermo-sensitive apparatus
IPC: H01C7/10
Filed: 1924-10-10
Abstract: 245,524. Westinghouse Brake & Saxby Signal Co., Ltd., (Union Switch & Signal Co.). Oct. 10, 1924. Telephonic, telegraphic, and other non- contact-making relays and repeaters.-Relates to relays of the kind in which a heater element is located in the controlling circuit and governs the temperature of a heated element located in the controlled circuit, as described in Specification 199,480. According to the present invention the heater element is so selected as to neutralize, reduce or amplify the effect of variations of voltage in its circuit; thus it may have a large positive temperature coefficient of resistance while the heated element has a negative coefficient. Thus as long as current is flowing in the controlling circuit II the resistance 2 is heated and raises the temperature of the adjacent resistance 1. The latter consists, in the embodiment shown, of copper oxide or other substance having a negative temperature coefficient and so when cold interrupts the current in the controlled circuit I, but when heated by the resistance 2 admits current to the lamp or other device B. The resistance element 2 is a ballast resistance having a high positive temperature coefficient, so as to keep the current in circuit II constant under fluctuating voltage. Instead of being insulated from one another as shown the resistances 1, 2, may be in contact and the circuits I, II, may have a conductor in common.