baber/WOPTO huggingface dataset:
Patent GB-1399118-A (GB)
Title: Automatic windscreen wiper controls
IPC: B60S1/48
Filed: 1972-06-09
Abstract: 1399118 Windscreen wipers AUTOMOBILES CITROEN SA 9 June 1972 [11 June 1971] 27170/72 Heading A4F [Also in Division G1] An automatic control for starting or stopping a windscreen wiper 4 comprises a detector 1 having two printed circuit electrodes partially embedded in an insulating surface e.g. a windscreen, the condition of wetness of the detector surface being a function of the condition of wetness of the windscreen surface and the resistance between the electrodes varying as the wetness of the surface, the detector forming part of a voltage divider of which the topping point P is connected to apply a bias to a transistorized trigger circuit actuating relay R to start the wiper when the detector resistance falls below a first threshold value, the relay contact 46 making to put resistor R 2  in shunt with R 1  in the voltage divider to reduce the bias voltage at point P whereby the transistor T3 (and thus the relay) remains turned on while the detector resistance is less than a second threshold value which is less than the first.
Patent GB-636924-A (GB)
Title: Improvements in and relating to liquid sprayers
IPC: B05B7/24
Filed: 1947-10-10
Abstract: 636,924. Spray-producers. FAKTOR, F. Oct. 10, 1947, Nos. 27241 and 11078. [Class 69 (iii)] A spray gun comprises an independent detachably-mounted material nozzle 36 and a concentric air nozzle 87 movable relatively to the material nozzle by means of a retainer ring 71 having a skewed slot co-operating with a detachable pin 75 mounted in the gun body. The outer air nozzle may be moved forward or back with respect to the material nozzle by twisting the retainer ring to vary the ratio of the air pressure in the air nozzle and the pressure in the material container, to control the degree of atomization of the material.
Patent GB-734168-A (GB)
Title: Improvements in method of and apparatus for printing
IPC: B41F31/00
Filed: 1953-10-05
Abstract: 734,168. Inking-apparatus. LEVEY CO., Inc., F. H. Oct. 5, 1953 [Nov. 13, 1952], No. 27273/53. Class 100 (2). Additional ink solvent is applied to a film of evaporative quick-drying ink as it is conveyed over a train of parallel ink transfer rollers, by rotating a cylindrical brush having radial flexible bristles in close proximity to but out of contact with one (e.g. the first) or more of the series of rollers about an axis substantially parallel to the transfer roller axes, and wetting the tips of the bristles with the solvent which is thus thrown from the brush on to the roller. In Fig. 1 the ink train 4 ... 8 of a rotary press is fed with ink by an oscillating ductor 11 from a fountain roller 2 having an adjustable doctor blade 10; close to the roller 4 a brush roller 14 is rotated at 300-1800 r.p.m. by connection of its shaft 27 to a variable-speed electric motor 28, Fig. 2; the bristles 15, whose tips contact a cylinder 16 supplied with ink solvent, may be flexed thereby, and again flexed by a scraper bar 30, so that the solvent is flipped on to the roller 4, or they may be unflexed, the solvent then being flung off by centrifugal force. The cylinder 16 has spaced raised parts 17 contacted by the rims of discs 23 dipping into a trough 29 containing the solvent, the shaft 22 to which the discs are keyed and the shaft 18 of the cylinder 16 being geared together at 20, 21 and driven by a variable-speed electric motor 19; the discs 23 are individually axially adjustable by yokes 24 clamped to a fixed rod 2 by bolts 26, to vary the width of their contact with the parts 17 and thus the amount of solvent supplied to each part of the brush 14. The brush 14 may be made up of a number of sections mounted on a common shaft, and a shield 31 with a drain trough 32 may be provided. If the device is kept running at normal speed during slowing down and re-starting of the press for a relatively short shut down, sufficient additional solvent will be applied to prevent excessive drying of ink on the ink rollers 4 ... 8. After a longer shut down the speeds of the motors 19, 28 may be increased during re-starting to give enough solvent to soften any tacky ink on the ink rollers.
Patent GB-1078032-A (GB)
Title: Apparatus for measurement of refractive indices
IPC: G02B21/14
Filed: 1964-07-02
Abstract: 1,078,032. Microscopes. J. A. CHERKASOV. July 2, 1964, No. 27316/64. Heading G2V. A microscope for immersion measurement of refractive indices of crystals by the dark-field method comprises an illuminating system including a diaphragm 6 with an annular aperture disposed in the front focal plane of a condenser 3, and an iris diaphragm 5 arranged in the exit pupil of the microscope objective 4 and in the plane of the image 7 of the annular aperture formed by the objective 4 so as to screen the image 7. For bright-field observation the diaphragm 6 is removable and the diaphragm 5 adjustable. When a crystal is immersed in a liquid and placed on the microscope stage, light is refracted at the boundaries of the crystal except for the wavelength at which the crystal and immersion liquid have equal refractive indices. Thus refracted light can pass through the iris diaphragm 5 to form images of the refracting parts of the crystal in a colour complementary to said wavelength.
Patent GB-463031-A (GB)
Title: Improvements in and relating to electric transformers
IPC: H01F38/18
Filed: 1936-10-08
Abstract: 463,031. Transformers. BRITISH THOMSON-HOUSTON CO., Ltd., Oct. 8, 1936, No. 27347. Convention date, Oct. 10, 1935. [Class 38 (ii)] A cascade transformer comprises a plurality of series connected transformer units 10, Fig. 1, enclosed in a casing comprising metallic sections 12 enclosing each unit and insulating sections 13. between the metallic sections. This arrangement permits insulating sections of smaller diameter to be used. The casing is oil-filled and shields 24 cause the oil to circulate up the centre and down the outside for cooling. The circuit is shown in Fig. 2, and comprises series connected primaries 11 with interconnected windings 22 for equalizing potential distribution. The cores 10 and casings 12 are connected to the primaries as shown and the Specification states that the increased capacity gives protection against surges.
Patent GB-308948-A (GB)
Title: Locking device for nuts and screws
IPC: F16B39/24
Filed: 1928-09-25
Abstract: 308,948. Nilson, N. D. Sept. 25, 1928. Locking nuts. - A locking device for nuts has an annular washer of channelled section recessed into the end faces of the nut so that its outer edge is firmly supported. The washer 3 is placed in the bottom face of the nut so that when the latter is screwed tightly down on the work the inner edge of the washer is forced into the threads of the bolt. The washer may also be placed in the top face of the nut when it is deformed either by a second nut placed above it, or by a special tool. In another form both washers may be used, or the washer may be recessed into the face of the work. In another modification the washer is held into place by claws formed on the nut surface whilst in another case a circumferential groove is formed in the bolt to receive the inner edge of the washer. If it is desired to prevent the washer rotating its inner surface may be formed with projections to fit a corresponding shape on the bolt.
Patent GB-680634-A (GB)
Title: Improvements in or relating to automatic burglar and fire alarms
IPC: H04M11/04
Filed: 1949-10-28
Abstract: 680,634. Automatic exchange systems. JACKSON, H. Jan. 26, 1951 [Oct. 28, 1949], No. 27629/49. Class 40 (iv). A fire or burglar alarm automatically connects itself to a telephone line and sets up a call by means of impulses derived from a switch formed by a wiper contact located in a spiral groove on a rotating disc, the groove passing through alternate conducting and non-conducting areas. In operation, an electromagnet 43 releases a spring-loaded catch 49 to start a gramophone 10 and to operate contacts which disconnect the electromagnet and substitute the alarm in place of the subset. The line loop is completed through the wiper 15 running in the spiral groove 17 in the disc 12 which is screwed to the turntable 10, and a second wiper 24 running in a circular groove 22. The impulses are transmitted as the wiper 15 crosses the non-conducting portions 37 and the wiper 15 then runs in a circular groove 21 in a conducting member 13 separated from the disc 12 by insulation 20. The line loop is now completed through wiper 15, member 13, a wiper 28 contacting a recess 26 in the member 13 and the secondary winding of a transformer, the primary of which is fed by a pick-up 11a transmitting the warning recorded on an annular record 11. A reset knob 41 is provided. The non-conducting portions 37 are either segments of insulating material fitted into recesses in the disc 12 or projections on an insulating plate on which the disc is mounted. Specification 442,565 is referred to.
Patent GB-279448-A (GB)
Title: Improvements in and relating to vertical pumps
IPC: F04D7/02
Filed: 1927-10-18
Abstract: 279,448. International General Electric Co., Inc., (Assignees of Allgemeine Elektricitõts-Ges.). Oct. 20, 1926, [Convention date]. Pumping-machines.- A pump 9 for cooling medium has a vertical shaft 1. A hollow body 4 is connected to the pump casing and has a flange 8 to support the driving motor 10. The pump is immersed in the cooling medium in the tank 11 which has a cover 12 with a socket 5 provided with a set screw 6 for adjustably securing the body 4. The pipe 14 conducts the pump discharge, and the bearings 2, 3 are sufficiently far from the pump to prevent liquid from reaching them. A pressure equalizing opening 7 is made in the body 4 and this may be in connection with the pump suction. The pump may be arranged outside the tank and below the level of the cooling medium.
Patent GB-993413-A (GB)
Title: Process for the production of a polymer consisting predominantly of polypropylene
IPC: C08F297/08
Filed: 1961-07-31
Abstract: A polymeric product comprising (a) a major proportion of isotactic polypropylene and (b) a minor proportion of a copolymer of propylene and at least one olefin, other than propylene, having four or less carbon atoms, and in which at least part of the copolymer is grafted on to the polypropylene, is made by feeding into a vessel containing propylene monomer and a catalyst, the olefin, other than propylene, before, during, or after propylene homopolymerization takes place in the vessel. The catalyst must be capable of polymerizing propylene and the other monomer at sufficiently similar rates of reaction to form a copolymer, and also to polymerize propylene to isotactic polypropylene.  Catalysts used are of the "low-pressure" type. Exemplified catalysts are TiCl3 + Al(C2H5)2Cl, TiCl3 + Al(C2H5)3, and VOCl3 + Al(C2H5)2Cl.  Hydrogen may be present during the reaction. The olefin may be added intermittently, and the reaction is preferably effected in a hydrocarbon diluent.  The olefin may be ethylene or n-butene-1.  The graft copolymer is recovered by conventional techniques.
Patent GB-868202-A (GB)
Title: Machine for spinning flanges on tank ends
IPC: B21D22/18
Filed: 1957-09-03
Abstract: 868,202. Spinning; altering physical properties. SCHLEIFENBAUM, P., and STEIN. METZ, H., [trading as SCHLEIFENBAUM & STEINMETZ MASCHINENFABRIK]. Sept. 3, 1957 [Sept. 14, 1956], No. 27762/57. Class 83 (4). A machine for hot or cold-spinning a flange on a tank end disc comprises two rollers engaging said disc from opposite sides wherein plastic deformation of the flange is produced by a combined pressing and smoothing operation in which a spinning roller is pivotable in an arcuate path along the profile of a shaping roller, the centre of the arcuate path coinciding with the point around which the shaping profile is generated at all points on the shaping roller periphery. A dished tank end disc 1 is clamped between vertically adjustable pressure plates 4, 5 the lower plate 4 being driven. The shaping roller 7 has a profile of the desired flange shape (Fig. 7) and its axis 10 is inclined to the vertical at an angle depending on the profile. The spinning roller 11 is advanced towards the shaping roller 7 to clamp the tank end and ensure a friction grip therebetween and whilst the tank end and the rollers are rotating the spinning roller 11 is rocked around the shaping roller to form the flange and also to impart an accurate finish to the material surface. The forming is effected by the small radius spinning face 14 of the roller 11 and the surface finishing by the large profile radius of the rear portion 15 of the roller (Fig. 2). The axis 16 of the spinning roller is inclined about 25 degrees to the tangent to the arcuate path 12 which is extended vertically downwards at 12<SP>1</SP> and the shaping roller is given the required profile to form a short cylindrical edge 2 to the tank end. The rollers are mounted in a frame 23 horizontally slidable on spindles 25 arranged each side of the frame in bearings 24 on the bed frame 26. The frame is adjusted by drive means 27 and a clamping device 29 locks the frame in its adjusted position. The spinning roller rocking frame 32 is vertically slidable on two guide columns 30 the vertical displacement necessary to form the cylindrical flange on the tank end is effected by a motor 33. The spinning roller holder 35 is rocked in an arcuate guide 36 by an hydraulic cylinder 37. A motor 38 geared to a rack 39 applies the spinning roller against the shaping roller. Angular adjustment of the shaping roller 7 is effected by an hydraulic cylinder 42. The tank end is centred in the clamping plates by three rollers spaced at 120 degrees around the tank end periphery said rollers being radially adjusted by synchronized motors. In a modification the shaping roller is in the form of an end pattern 7d (Fig. 6), which is fitted and driven instead of the lower clamping plate 4.
Patent GB-1118506-A (GB)
Title: Improvements in electric switches
Inventor: BEADLE ANTHONY CRISP
IPC: H04M1/02
Filed: 1967-06-16
Abstract: 1,118,506. Telephone sets. STANDARD TELEPHONES & CABLES Ltd. 16 June, 1967, No. 27784/67. Heading H4J. [Also in Division H1] An electric switch assembly for use on a telephone instrument, has one or more actuating levers 20, Fig. 4, pivoted at points 21 and held by tension springs 31 having alternative attachment points 34, 35. Lugs 44 on the levers 20 engage micro-switches 40. With the springs 31 attached at the alternative upper or lower positions 32, 33 the lever 30 is held stable in one position and is retractive. With the springs 31 centrally mounted to move over-centre the lever 20 is stable in both set positions. The switches may be used on telephone instruments for operator recall, call transfer or party line purposes or for disconnecting a tone ringer.
Patent GB-966914-A (GB)
Title: Improvements in or relating to low pressure mercury vapour fluorescent electric discharge lamps
Inventor: STEPHENSON HERBERT FRANCIS
IPC: H01J61/72
Filed: 1961-08-01
Abstract: A cement, used for attaching metal caps to the ends of a discharge lamp envelope, is formed mainly of a resin incorporating a filler which consists at least partly of a metal powder.  The resin can be a thermo-setting resin and can be a mixture of a phenolic resin and shellac.  The metal powder can be of aluminium or copper of 25-100, preferably 30-50, mesh size and can form 50-90% by weight of the cement.  The cement can include a curing agent. Specifications 829,441 and 966,913 are referred to.
Patent GB-1068574-A (GB)
Title: Magnetic pressure indicator
IPC: H01H36/00
Filed: 1964-07-07
Abstract: 1,068,574. Indicating clogging of filters. LLOYD & HILLMAN Ltd. July 7, 1964 [Dec. 4, 1963], No. 27999/64. Addition to 891,246. Headings B1D and B1T. To prevent accidental actuation of a pressure indicating device used, e.g. in connection with a filtering system, an annular magnetic element 9, Figs. 1 and 4, is arranged to ensure retention of an magnetic element 11 in its normal attracted position (as shown) with a lower magnetic element 10, and also retention in its indicating raised position caused by a positive pressure difference having formed between the unaltered liquid above element 10 and the lower pressure liquid beneath the element 10 on the fan side of the clogged filter 17 and the magnetic attraction between the elements 10 and 11 ceasing due to their enforced separates. The elements 10 and 11 are thus forced apart, overcoming the magnetic attraction between them. When element 11 is against wall 12 the upper pole of the element approaches and is attracted by the. upper and opposite pole of element 9, and when element 11 is driven away by pressure difference and spring 31 its lower pole is attracted by lower opposite pole of element 9. To prevent dirt entering bore 15 a filter 2 1 is inserted in an enlarged portion 22, and the housing is formed in two portions 23, 24 for easy insertion of filter 21. In Fig. 5 the lower magnetic element 110 is mounted in a sleeve 114 inserted through a plate 116 which holds a flexible diaphragm in liquid tight seal. Fluid is introduced to both sides of the diaphragm through inlets 127, 128 and 129, 130 connected to different sides of a filter. An electrical signal, as in Figs. 4 and 5, may warn of clogging, or the raising of a coloured cap 30, Fig. 1, due to raising of element 11 may serve as a indicator. A bimetallic element 35 (Fig. 1) serves to retain element 11 against actuation at below predetermined temperature level. A flange 32 stops raised element 11 when at a predetermined distance from its normal position so that it automatically returns to normal position by the attractive force of element 10 when the latter element returns to wall 12 on normal filtering conditions being resumed.
Patent GB-801006-A (GB)
Title: Improvements in and relating to hydraulic control systems
Inventor: ROBINS GUY HERBERT
IPC: F15B11/16
Filed: 1955-10-03
Abstract: 801,006. Lift trucks. LIFTING GEAR SERVICES, Ltd. Oct. 3, 1956 [Oct. 3, 1955], No. 28057/55. Class 78 (3). [Also in Group XXIX] An hydraulic system for the control of a fork lift truck comprises hydraulic motors 17, 27a, 32 selectively operable under the control of a manually actuated selector valve 16 and supplied with liquid from a pump 1 having a lowpressure high-capacity part and a high-pressure low-capacity part. The selector valve comprises a body having a central bore 45 containing a valve member 53 and bores 46 containing valve members 47. A handle 48 is rotatable and rockable, being pivoted to the valve member 53 and carrying rollers 55 which engage selected valve members 47 to depress them when the handle is rocked. A member 57 is rotated with the handle, and is brought over the unselected valve members 47 to prevent them rising above a neutral position. In the central position of the handle 48 the pump discharge line is collected through the central bore 45 with an exhaust line 26, and the valve members 47 are in their neutral positions in which they close the motor lines, thereby locking the motors. Rocking of the handle 48 initially depressed one or two of the valve members 47 to thus open the line or lines to the selected motor or motors. Further movement of the lever raises the central valve member 53 to close the exhaust line 26 and cause oil to be delivered. When the load is light both parts of the pump deliver to the selector valve; if the load increases so that the pressure in the system rises above a predetermined value, the output of the low-pressure part is automatically by-passed to a reservoir. Specification 793,972 is referred to.
Patent GB-496319-A (GB)
Title: Composite bearings
IPC: F16C33/06
Filed: 1937-10-15
Abstract: 496,319. Bearing bushes; casting. GENERAL MOTORS CORPORATION. Oct. 15, 1937, No. 28094. Convention date, Nov. 30, 1936. [Class 12 (i)] [Also in Group XXII] A loose bearing bush comprises two separate members 5, 7, in contact with one another, the exposed faces of which have a layer 6, 8, of bearing metal fused thereto, the members 5, 7, being permanently secured together to form a unit. The members 5, 7, are preferably of iron or steel, and the bearing metal is a plastic bronze composed of lead and copper. To manufacture the bush an iron or steel shell 14 is welded at 16 to a spaced tube 15 and the whole is heated to a bright red. Molten bearing metal 18 is poured into the annular space between the parts 14, 15, and then the whole is rapidly cooled from the outside. When cold surplus material is removed to leave a steel or iron tube 5 coated on the inside as shown dotted in Fig. 3. By a similar method the part 7, 8, is formed. The two compound tubes are then assembled and secured together as by shrinking or by welding the members 5, 7 together.
Patent GB-705562-A (GB)
Title: Improvements in or relating to data storage device
Inventor: KEEN HAROLD HALL
IPC: G11B5/10
Filed: 1952-11-07
Abstract: 705,562. Statistical apparatus ; digital electric calculating apparatus. BRITISH TABULATING MACHINE CO., Ltd. Nov. 7, 1952, No. 28114/52. Class 106 (1) A magnetic storage device for use in record card accounting machinery comprises a drum adapted to be synchronized with the differentially timed impulses, representing digital data, read from the card or an equivalent source such as an accumulator. The drum is comprised of magnetic discs 1 interleaved with non-magnetic discs 2 and held together by bolts 4 and nuts 3. The drum is ground to an accurate surface finish after assembly and is mounted on a shaft 6 supported in bearings 7 between end plates 8 on a base 9. The end plates 8 carry supporting plates 13 for a series of magnetic recording and reading heads 15 mounted in staggered holes 14 across the axis of the drum. Each magnetic head comprises an iron core 15, Figs. 2, 3, 4, with a small gap, on which is mounted a winding 16. After assembly of the winding 16 on the core 15, the latter which was offset as shown in Fig. 4 is closed up as shown in Fig. 3 to leave a small gap which is filled with non-magnetic material. Two contacts 21 are provided for terminating the connections to the coil 16 and the assembly is mounted in a non-magnetic tube 18 which is filled with a sealing compound. The synchronism between the drum and the card reading means or accumulator is shown diagramatically in Fig. 5. A common drive shaft 29 drives the card feeding and reading mechanism via gears 30, 31, 32, and also drives the magnetic storage device via gear 30 and a train of gears terminating with the gear 12 fast on the shaft 6. The drive to the accumulator 47 is also from gear 30, shaft 38, intermediate gears and shaft 45. The storage device is intended for use in a tabulator of the kind described in Specification 422,135 to which reference is made, operation of the various electromagnetic clutches shown in Fig. 5 being carried out in the manner described in Specification 422,135. The accumulator shown diagramatically in Fig. 5 at 47 is of the rotatory brush type, a relay accumulator such as that described in Specification 704,860 may be employed instead. After assembly the tips of the magnetic recording heads 15 are ground off as shown in Fig. 2 by the dotted outline, and the flat pole face is then adjusted towards or away from the magnetic drum surface as required by the threaded portion 23 of the body 18.