baber/WOPTO huggingface dataset:
Patent GB-1424103-A (GB)
Title: Teaching machines
IPC: G09B5/00
Filed: 1973-05-24
Abstract: 1424103 Educational appliances CESKE VYSOKE UCENI TECKNICKE V PRAZE 24 May 1973 [25 May 1972] 24910/73 Heading G5G A teaching appliance comprises a display screen 8 mounted for limited movement against the action of springs 20; normally open contacts 19 located at each corner of the screen; a light source 6 and an associated light receiver 9, e.g. a photo-transistor, mounted on a cord and pulley arrangement 18, 2, 3, (1), Fig. 1 (not shown), so that the combination can be traversed along first and second margins of the screen; a similar combination (15, 16) mounted on a cord and pulley arrangement 11, 12, 13, 14 for movement along third and fourth margins of the screen (Fig. 2, not shown) the beams from the light sources 6, (15) thus defining a horizontal and vertical system of co-ordinates on the screen; a drive motor for the cord and pulley arrangements; and photo-elements 21 mounted for movement with the respective receivers 9, (16). In use, an image representing a plurality of possible answers to a question is projected on to the screen 8, together with a luminous code which can be scanned by the photo-elements 21. A student responds to the question by pressing on what he considers to be an appropriate spot on the screen, whereby the screen moves slightly so that the contacts 19 are closed to energize the drive motor. The two co-ordinate systems thus move into the indicated area, where the light beams are interrupted to de-energize the drive motor. The photo-elements 21 then receive a particular luminous code which is fed into controlling circuitry (not shown) for evaluation.
Patent GB-1457222-A (GB)
Title: Spiro-heterocyclic compounds and their use in pharmaceutical compositions
IPC: C07D311/96
Filed: 1975-06-11
Abstract: 1457222 Pharmaceutical spiroheterocyclic compounds ROUSSEL UCLAF 11 June 1975 [12 June 1974] 25044/75 Heading C2C Novel compounds of the formula wherein R and R<SP>1</SP> are hydrogen or (C 1 -C 4 ) alkyl, X is oxygen or sulphur and n is 2, 3 or 4 are prepared by reacting a compound of the formula or a functional derivative thereof, with a compound of the formula H 2 NOR<SP>1</SP>. The compounds of the invention possess pharmaceutical properties An example describes the preparation of N - methoxy - α - methyl - 2,3,5,6 - tetrahydro spiro(indane-1,4<SP>1</SP>-pyran)-5-acetamide.
Patent GB-866912-A (GB)
Title: Improved core molding compositions
IPC: B22C1/24
Filed: 1957-08-08
Abstract: A core oil composition comprises a vegetable drying oil, a synthetic hydro-carbon polymer oil and a synthetic hydrocarbon resin.  Linseed oil is the preferred drying oil, the polymer oil boils between 400 DEG  and 1,000 DEG F., has an iodine number between 240 and 320 and a Staudinger molecular weight between 200 and 1,000, while the synthetic hydrocarbon resin may be a petroleum resin of softening point between 158 DEG  to 230 DEG F., an iodine number between 92 and 119 and an intrinsic viscosity between 0,037 and 0,120. A hydrocarbon solvent, e.g. one boiling between 130 DEG  and 500 DEG F. with a Kauri Butanol value between 35 and 130 may also be present. The composition may be added to major amounts of inert finely divided solids, e.g. sand or coke, to form core moulding compositions on baking at 350 DEG -600 DEG F.
Patent GB-1467871-A (GB)
Title: Synchronous electrical machines
IPC: H02K55/02
Filed: 1974-06-06
Abstract: 1467871 Dynamo-electric machines FIZIKOENERGETICHE INST AKAD NAUK LATVII SSR 6 June 1974 25115/74 Heading H2A A synchronous A.C. machine comprises a rotor having two parts with mutually interdigitated poles surrounding a cryostat containing the stator which carries the superconducting armature and field windings. In the inductoralternator shown the steel rotor 2 has its two parts bonded by a non-magnetic filling of aluminium, copper or plastics and is rotated by the shaft 3 mounted in bearings 11 inside the housing 32. The plastics or laminated steel, holmium or dysprosium core 5 carries a threephase superconducting armature winding 4 fixed thereto by glass tape. Two bobbins 7 fixed at each end of the core 5 carry the D.C. superconducting field winding 6. The superconducting windings are of Nb-Mr, Nb-Ti, or Nb 3 Ga. The stator is enclosed in a thin-walled glass-fibre reinforced plastics (G.R.P.) or stainless steel cryostat 8 having an inner container 24, 25 and an outer container 27, 28 (Fig. 1, not shown), the inner surface of which is coated with silver or aluminium. The field flux path 68 provides useful flux cutting the armature windings 4, providing a 3-phase output on rotation of the shaft. If the armature winding is energized by an external 3-phase supply, the machine acts as a synchronous motor. The upper part of the cryostat (Fig. 1, not shown), comprises an outer G.R.P. or stainless steel shell (28) fixed to the lower part by a ring (30). An evacuated space (42) is formed between this shell and an inner cylinder (39) which itself forms a jacket with a further inner cylinder (24) which jacket is filled with liquid nitrogen. The space inside the central cylinder 24 is that which contains the stator in the lower half of the machine. The leads from the stator are connected to copper tubes which pass out through the cryostat cover (26) via sealed bushings (e.g. 62-64) which are mounted on stainless steel tubes (e.g. 63) on the cover to reduce heat loss. Similar bushing arrangements are provided for the liquid helium inlet and outlet ports which communicate with the inside of the inner cylinder (24).
Patent GB-208584-A (GB)
Title: Improvements in, or in and relating to, door fastenings and the like
IPC: E05B41/00
Filed: 1922-09-18
Abstract: 208,584. Jenks, G. C. Sept. 18, 1922. Sliding-bolts; catches, ball-ended.-A handleoperated sliding spring-pressed bolt for securing a lavatory or like door, can be fully shot or partially shot so that only its rounded end protrudes, the bolt having a projection at right angles to it on the side opposite the handle for operating an " engaged indicator. The bolt A slides in a tube B morticed into the edge of the door, and has screwed through it an operating handle C which passes through a slot a<3> in the tube B, a slot D in the door, and through a slot e<1>, e<2>, e<3>, in the plate E. A small knob c<2> is formed on the handle shank c<1> and protrudes at the other side of the bolt, the handle being secured to the bolt against unscrewing by a lock-nut c<3>. When the bolt is in the position shown in Figs. 1 and 3, the handle shank c' is engaged in the shorter slot e<2> in the plate E and the spring a<1> can only cause the rounded end of the bolt to protrude. In this position the bolt co-operates with the double-bevelled striking plate H to act as a ball-ended catch. To secure the door, the handle is moved to the right and pushed upwards through the slot e<3> into the longer slot e', when the spring can protrude the bolt fully so that the door can only be opened from the inside. The small knob c<2> on the handle engages a channel f<5> on the back of a sliding indicator f<2>, whereby movement of the handle shank in the vertical slot e' causes the knob c<2> to slide the indicator plate to reveal the words " engaged " or " vacant " according to whether the bolt is fully or partially shot. The indicator plate f<2> slides in guides f' mounted in the front plate F, which has a slot f to reveal the appropriate word. The plate F is secured to the outside of the door by screws G which take into tapped sockets e integral with the plate E on the inside. To open the door from the outside in case of emergency, the screws G and the plate F are removed and the bolt operated by the knob c<2>.
Patent GB-635938-A (GB)
Title: Improvements relating to garden cloches or cold frames
IPC: A01G9/20
Filed: 1947-09-15
Abstract: 635,938. Horticultural cloches ; garden frames &c. SKINNER, A. T., and S. C. F. PRODUCTS, Ltd. Sept. 15, 1947, No. 25224. [Class 20 (i)] Garden frames, cloches &c. are rendered readily movable by erecting rails on the ground to be covered by the cloches and by providing brackets and wheels which are attachable to the cloches so as to run on the rails. The rails consist of angle irons 3, Fig. 3, which seat in iron shoes 4 welded to spiked members 2 adapted to be driven into the ground. The wheels 16, Fig. 5, may be flanged or grooved to run on the rails, and are carried by studs 15, or by a bolt and nuts, mounted on the part 12 of a bent strip bracket 8 having a bent portion 10 forming a recess in which engages the angle iron 11 constituting the base member of the garden-frame &c.
Patent GB-840013-A (GB)
Title: Improvements in or relating to an installation for guiding road vehicles
IPC: B61B13/10
Filed: 1957-08-12
Abstract: 840,013. Guiding vehicles. USINES CHAUSSON S. A., DES. Aug. 12, 1957 [Sept. 4, 1956; Nov. 16, 1956], No. 25371/57. Class 79(5). A road vehicle 1 Fig. 2 is steered through tunnels &c. by fixed guides 35, 36 of arcuate section which influence elements such as wheels 19, 20 connected to a differential mechanism 26 controlling the steering of the wheels 2. The guides 35, 36 have the centre of curvature 12 on the longitudinal rolling axis of the vehicle so that the steering is not affected when the vehicle rolls during steering. They are adjusted to different heights with respect to one another in the region of bends by amounts inversely proportional to the radius of curvature of the bend. The wheel movements rotate the support arms 8, in opposite directions about their supporting pivots 6 which are connected through cardan shafts 21, 22 to shafts 24, 25 of the differential mechanism 26 which raises or lowers a slide 33 controlling a servo steering system for the vehicle. The differential mechanism 26 comprises a pair of cranks 29, 30 Fig. 4, integral with the shafts 24, 25 and coupled to the slide 33 through a cross-member 31 the arrangement being such that opposite rotations of the cranks 29, 30 cause a raising or lowering of the slide 33 to steer the vehicle. Rotations of the cranks 29, 30 in the same direction resulting from changes in height of the vehicle when carrying different loads result in equal upward and downward movement of the ends of the cross-member 31 so that the rod 33 is not moved to influence the steering. 'In another example the steering is controlled in part by fixed arcuate guides 35, 36 Fig. 8 at constant height and in part by a grooved track 101 following the required path of the vehicle and actuating followers 103, 104 Fig. 10 to rotate a shaft 109 according to the direction of the path. With this arrangement the wheels are steered in the general direction of travel by the followers 103, 104 and are corrected for deviations from the theoretical path by' resultant differential movements of the rolls 19, 20. A slide 115 controlling a servo-steering device is actuated through a double arm lever 113 both by rotation of the arm 109 through a screwed socket 112 at one end of the lever 113 and by differential movements of the followers 19, 20 actuating a slide 33 connected to the opposite ends of the lever 113. The followers 103, 104 are connected to opposite ends of a bar 105 which is caused to move tangentially to the grooved path 102 and rotates the shaft 109 through flexible parallelograms 106, 107 which permit variations in the height of the vehicle or rolling of the vehicle without affecting the steering. In this example the arm 41, 42 supporting the follower rolls 19, 20 are integral with the shafts 24, 25 of the differential gear 26 and are supported thereby.
Patent GB-615093-A (GB)
Title: Improvements in and relating to machines for topping or cutting the haulms or shaws of turnips and other root crops
IPC: A01D33/06
Filed: 1946-08-26
Abstract: 615,093. Root-crop topping machines. DUNCAN, J. Aug. 26, 1946, No. 25379. [Class 6 (iii)] A machine for cutting the haulms of root crops incorporates a shaw cutter and a shaw gripping device and a pair of forwardly extending prongs to guide shaws to the grippers, the latter comprising a rotatable toothed disc arranged in front of and above said cutter, and a non-rotatable spring- urged curved plate surrounding the rear edge of the toothed disc. The cutter unit comprises a disc 8, arranged between a fixed plate 12 and forwardly extending splayed prongs 13 which are on the plate 12, mounted on a sleeve 9 having a slot 10 in which a pin 11 on a spindle 4 slides. The spindle drives the cutter disc and may be driven from the land wheels or direct from the tractor. The cutter unit is raised by a lever 18 and chain 17 attached to the plate 12 which also has attached thereto a bracket 14 with a roller engaging in a guide. A counterweight 19 is provided. A spindle 21 carries the toothed disc 22 which is surrounded at the rear by a curved plate, the haulms being gripped between them and as the machine travels forwardly the haulms are cut by the disc 8 and then pass out of the curved plate. The Provisional Specification describes a modification wherein a second gripping device is provided for extra long shaws.
Patent GB-1354249-A (GB)
Title: Projectile fuses
IPC: F42C11/04
Filed: 1972-05-31
Abstract: 1354249 Electric generators WERKZEUGMASCHINENFABRIK OERLIKON-BUHRLE AG 31 May 1972 [3 June 1971] 25453/72 Heading H2A [Also in Division F3] A fuze for a rotating projectile comprises an armature 8 and a coil 10 mounted to rotate with the projectile inside a stationary ring magnet 12. The magnet remains stationary by virtue of P.T.F.E. coatings 100 which isolate the magnet from the rotation of the projectile.
Patent GB-1150196-A (GB)
Title: Combination Hypodermic Needle Blocker and Needle Sheath.
Inventor: SOLOWEY IDA
IPC: A61M5/31
Filed: 1967-06-02
Abstract: 1,150,196. Hypodermic needle covers. I. SOLOWEY. 2 June, .1967 [24 Oct., 1966], No. 25483/67. Heading ASR. ' A cover for the hollow needle 18 of a hypodermic syringe 20 comprises a sheath 31 for sealing engagement with the syringe so as to enclose the needle, a rod-like needle blocker 32 secured to the sheath, for reception within the needle, and a sleeve 34 fitted on .the needle blocker within the sheath for sealing abutment with the tip of the needle. The sleeve 34 may be of a flexsible rubber or plastics material and may .be formed with an internal recess 39 to mate with a disc-shaped projection on the needle blocker. The end (37) of the sleeve may be inclined so as to correspond with the inclined] end (38) of the hypodermic needle. The sheath 31 may be formed from a rigid plastics material and may be frictionally secured to the .support 19 of the syringe such that, when it has once been removed, it must be discarded.
Patent GB-1108129-A (GB)
Title: Modular electrical connector assembly
IPC: H05K7/06
Filed: 1966-06-08
Abstract: 1,108,129. Circuit assemblies. AMP. Inc. 8 June, 1966 [2 July, 1965], No. 25522/66. Heading H1R. [Also in Division H2] Printed circuitry and electrical components on boards 14 are connected from board to board by connectors in the walls of the modular housing 4a-4d by which the boards 14 are supported and enclosed, each connector comprising a tubular socket 32 with a split plug 33 at its lower end and a tab 30 which extends on to the corresponding board 14 to contact its printed circuitry and which by its shape retains the connector in cavity 20. Each plug 33 extends into the socket of the connector next below, or to printed conductors in panel 50 or socket connectors, not shown. The circuit paths so formed may be broken by removing the plug 33 or tab 30 from a particular socket 32. The boards 14 may be replaced by groups of interconnected modular units, which may be encapsulated, for example in epoxy resin, and frames 4a-4d may be replaced by plates supporting circuit elements.
Patent GB-446799-A (GB)
Title: Improvements in electric discharge lamps
IPC: H01J61/96
Filed: 1935-09-14
Abstract: 446,799. Discharge lamps. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, and GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, both in London. Sept. 14, 1935, No. 25562. Convention date, Sept. 15, 1934. [Class 39 (i)] A high-pressure metal vapour lamp has a refractory filament, adapted to be connected in series with the discharge lamp, mounted in the space between the inner discharge envelope and an outer sealed jacket. One end of the filament may be connected to an electrode, and the other end and the remaining electrode to the external leads. The filament may be at one end of the outer jacket, or may be a helix or a number of limbs parallel to the axis and surrounding the inner envelope, in which case it may serve as a heater or as a starting electrode. The outer envelope may be filled with a neutral gas so that it serves as a gas-filled incandescent lamp. Lamps in which two electrodes are connected by an incandescent filament and are placed near a pool of metal are excluded from the scope of the invention. Specifications 375,477, 386,586, 403,836, and 404,101 are referred to.
Patent GB-604379-A (GB)
Title: Process for the treatment of sheet iron
IPC: C23G1/08
Filed: 1945-10-02
Abstract: In a process of treating sheet iron to obtain a clean metallic surface, the metal is immersed for 5 to 30 minutes in an acid bath composed of 3 to 9 parts by weight of nitric acid, 31 to 33 parts of hydrochloric acid, 10 to 20 parts of sulphuric acid, 8 to 12 parts of hydrogen sulphide, 1 to 7 parts of acetic acid, and 2 to 9 parts of bitriphosphate of potassium in 100 parts by weight of water.  The surface may then be neutralized in an alkaline bath consisting of an aqueous solution containing 3 to 10 per cent caustic soda, 2-8 per cent caustic potash and 3-15 per cent of ammonium hydrate and immersion may be for 2 to 6 minutes followed by washing.  The metal is then suitable for varnishing, tinning or galvanising but if this operation is not being carried out within a short time the metal may be given a further treatment in a silicate solution of pH value 8-12 at 75 DEG  to 100 DEG C.  The silicate protection may be removed by washing in warm water.
Patent GB-629438-A (GB)
Title: Improvements in boxes or cartons
IPC: B65D5/50
Filed: 1947-09-19
Abstract: 629,438. Boxes. EVA & SON, Ltd., A., and COWARD, A. C. Sept. 19, 1947, No. 25563. [Class 18] A box is comprised of two blanks, one, A, forming a lid 12 and lid flap 13 together with a base 10, rear wall 11 and an insert section 14, and the other, B, forming the front and end walls of the box. The section 14, which may be apertured, is supported by portions 25, 30, forming part of the blank A, in a position intermediate the base 10 and lid 12. An opening in the lid may be made by slitting as at 31.
Patent GB-681265-A (GB)
Title: Improvements in or relating to superheterodyne receivers
IPC: H03L7/10
Filed: 1949-10-05
Abstract: 681,265. Automatic tuning correction. PHILIPS ELECTRICAL, Ltd. Oct. 5, 1949 [Oct. 8, 1948], No. 25600/49. Class 38 (iv). In a superheterodyne receiver comprising a mixer and a separate local oscillator in which the frequency error detector is connected to an I.F. amplifier and provides a direct control voltage for automatic frequency correction of the local oscillator, the A.F.C. voltage is supplied to a control grid of the mixer which operates as a direct voltage amplifier of the A.F.C. voltage, and the anode circuits of the mixer and oscillator valves include a common resistor across which appears the amplified A.F.C. voltage supplied to the oscillator anode for frequency correction. As shown, a receiver for single side-band signals which include a 10 kc/s. pilot frequency, comprises an R.F. amplifier 2, first oscillator 3, and first mixer 4, the amplified signal from the mixer 4 being applied to the first control grid 8 of a second mixer 9. A local oscillator comprising a triode 10 and tuned circuit 11, 12, is back-coupled through a coil 13, its control grid being coupled through capacitor 16 to the grid 17 of the valve 9. The single side-band output from the mixer 9 is applied to a demodulator 18 which is also supplied with a 10 kcs./sec. signal from a crystal-controlled oscillator 22, the resultant low-frequency signals being supplied with a 10 kcs./sec. signal from a crystalcontrolled oscillator 22, the resultant lowfrequency signals being supplied through a lowpass filter 23 and amplifier to a reproducing device. An amplifier valve 20 is also supplied through a band-pass filter 21 from the output of the mixer 9, the amplified pilot-signal being passed through a limiter 36, 37 and amplifying valve 35 to a frequency error detector 42 where it is compared with the signal from the oscillator 22, a frequency or phase difference providing a control voltage at output resistors 43, 44. This voltage is taken from a sliding contact 45 to the grid 17 of the mixer valve, the amplified voltage appearing across a resistor 47, de-coupled for R.F. and I.F. at 48, which is common to the anode circuits of the mixer and oscillator valves, and varying the oscillator anode voltage to vary its frequency. To reduce the effect of the consequent variation of potential on the mixing valve the control voltage is also fed from resistors 43, 44 to amplifying valves 51, 52 both of which are cut-off in the absence of the control voltage but either one conducting according to the polarity of the control voltage. In this way a coil 53 or 54 is energized and a piston 56, which constitutes a capacitative electrode and is movable in a tube, co-operates with coatings 57 on the tube to adjust the frequency of the oscillatory circuit 11, 12, the slower-acting mechanical control taking over the frequency correction from the electronic control until the latter is released almost completely.
Patent GB-624849-A (GB)
Title: Improvements in and relating to vegetable cutters
IPC: B26D1/29
Filed: 1945-10-03
Abstract: 624,849. Slicing machines. ABBOTT, H. G. Oct. 3, 1945, No. 25759. [Class 5(i)] [Also in Group VI] A machine for slicing vegetables comprises a cast base with means for clamping it to a table, and a standard carrying a circular flanged guard plate 11 and a bearing 13 for a spindle 14 having a handle 15 at one end and a disc 16 at the other end, lying within the flange of the guard plate and carrying one or more angularly-disposed cutter blades 18 on its inner surface 17. The edges of the blades. co-operate with slots 21 in the disc, one edge of each of which is bent to provide a seating for a blade and through which the sliced material passes, the lower part of the flange on the guard. plate being omitted to permit the passage of the slices. The material is fed through one or more integral or detachable sockets 25 on the outer surface of the guard plate, the lower end of the socket terminating- opposite the outer ends of the blades 18, which are so inclined to the surface 17 of the disc (Fig. 5, not shown), that the action of cutting a slice drags the material down- . wards so as to be a position to receive a further cut from the next blade. The blades may be secured to the disc by screws 19 or by upstanding pips cast on the disc which pass through apertures in the blades and are then riveted over (Fig. 6, not shown). To enable the thickness of the slices to be varied, washers may be placed between the blades and disc. Alternatively the disc and guard plate may be positioned in a horizontal plane, or adjustable means may be provided to bring them to this or an intermediate position. Furthermore, a lever may be employed to give the disc a semi-rotary action in two directions, one blade being provided cutting in one direction or at least two blades, one cutting in each direction.