baber/WOPTO huggingface dataset:
Patent GB-1336491-A (GB)
Title: Cameras
IPC: G03B7/099
Filed: 1971-06-29
Abstract: 1336491 Camera exposure control NIPPON KOGAKU K K 29 June 1971 [3 July 1970] 30458/71 Heading G2A A camera exposure control system allows the shutter to be automatically controlled in accordance with object brightness and selected aperture on the aperture to be automatically controlled in accordance with object brightness and selected shutter speed. In both cases the aperture is stopped down first either manually or automatically according to subject brightness and pre-set shutter speed, the brightness of the light passing through the stopped down aperture is measured by a photo-sensitive element and stored by a memory capacitor, and exposure time is controlled by charging another capacitor with its voltage bears a predetermined relation to that of the memory capacitor. As shown for automatic shutter control and pre set aperture, the aperture is stopped down using ring 79, and the shutter release 15 is pressed to move a plate 69 leftwards. This operates a lever 44 to move a shutter opening blade 16. At the same time a switch 90 is opened so that a memory capacitor 91 Fig. 5 is charged according to the light incident on a photo-cell 51 on blade 16, and a switch x is opened so that a capacitor C starts to charge. A differential amplifier DA2 compares the voltage on capacitor C with that on memory capacitor 91 (as modified by a film sensitivity resistor 92) and de-energizes an electromagnet 50 to allow a shutter closing blade 25 to move. For automatic aperture control and pre-set exposure control, a shutter dial 106 sets a resistor 96. When release 16 is pressed, aperture rings 60, 75 close until the voltage due to the illumination of photo-cell 51 compares with that due to resistor 96 and electromagnet 65 is de-energized to release a pawl 62 which arrests rings 60, 75. This sets the aperture according to subject brightness and preset shutter speed. Shutter release then takes place as before. If the shutter speed set is too fast or too slow for the available light the aperture automatically moves to its fully open or almost closed position and the shutter speed is adjusted accordingly. A pointer 109 Fig. 5 indicates the automatically set shutter speed or aperture. Figs. 7, 8 (not shown) depict alternative embodiments as applied to S.L.R. cameras. In Fig. 7 (not shown) a photo-cell 51 is provided on shutter blade 16. In Fig. 8 (not shown) a photo-cell 142 receives light via the pentaprism. Fig. 8 (not shown) also shows exposure time and aperture scales (162, 163) which are selectively movable into the viewfinder ray path.
Patent GB-1325332-A (GB)
Title: Semiconductor devices
IPC: H01L27/088
Filed: 1970-06-23
Abstract: 1325332 IGFET PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 23 June 1970 [26 June 1969] 30463/70 Heading H1K To suppress undesired channel formation in an IGFET comprising source and drain inclusions of one conductivity type in a substrate region of opposite type defining a channel therebetween, a more highly doped region of the same type as the substrate is provided at its surface, which surrounds the area occupied by the source, drain and channel and is in physical contact with at least one of the source and drain. The region, preferably less highly doped than the source and drain may extend to a greater depth than they do and laterally beneath them. In another case it is more highly doped but of lesser depth than the source and drain which it partially overlaps. This overlapping allows a certain amount of latitude in the alignment of masks used in forming the highly doped and source and drain regions. The highly doped region preferably extends beneath the gate electrode to precisely define the sides of the channel. Typically the surface passivating and gate insulation is silica and the substrate N type, but if alumina is used the substrate may be P type. Another possible passivant is silicon nitride, either alone or with silica, and germanium and AIII BV compounds are suggested as semi-conductors. The preferred embodiment is an integrated memory element of a shift register and includes two rings each consisting of three IGFETs and interconnected as shown in Fig. 1. Fig. 2 shows the physical arrangement. In manufacture an N + region is formed by conventional diffusion of arsenic into the entire face of a 111 or 100 oriented N type silicon wafer apart from the areas within dotted lines 33, 34. Then boron is diffused in more shallowly to define the source and drain regions 12 to 17. The necessary connections are in the form of deposited aluminium strips 7-11. Channel formation can be further suppressed by use of a passivation layer which is thicker beyond the boundaries of the IGFETs.
Patent GB-536624-A (GB)
Title: Improvements relating to electric fusible cutouts
IPC: H01H85/20
Filed: 1939-11-21
Abstract: 536,624. Fusible cut-outs ; two-part couplings. BRITISH INSULATED CABLES, Ltd., and RAWLINSON, J. Nov. 21, 1939, No. 30468. [Class 38 (i)] A base for a bridge-carrier fuse has contacts pressed upwardly by springs against the fuse which is pressed down against the contacts. The contacts 3 slide on studs 6 screwed into inserts 8 in the base 5 and are supported by springs 9. The contacts are free to align themselves, being confined by partitions 28. A cover 2 that fits over the base has a clip 19 hinged at 21 and secured by a screw 25 to hold the fuse 17. When the cover is applied to the base, studs 15 pass through holes 26 and the cover is pressed down by nuts 16 on the studs to force the end caps 20 of the fuse into tapered recesses 4 in the contacts 3.
Patent GB-994343-A (GB)
Title: Improvements in or relating to sensitising compounds for light-sensitive resists
IPC: C08F8/30
Filed: 1961-08-24
Abstract: 3 - carbethoxy - 4 - oxo - 1,4a  - diazanaphthalenes of formula <FORM:0994343/C2/1> wherein R1 is hydrogen, R3 to R6 are hydrogen, alkyl, or halogen and R2 is carbethoxy are prepared by refluxing 2-aminopyridine or its appropriate substitution product with diethyl ethoxymethylene malonate.  Specified compounds are wherein the R's are chlorine, idoine bromine and methyl.  4 - thio - 4a - azanaphthalene is prepared by refluxing 4 - oxo - 4a - azanaphthalene with phosphorus pentasulphide and adding ammonium sulphide.  2,5 - bis (carbethoxy) - 3 - methyl - 4 - oxo - 1 - thia - 3a,7 - diazaindene is prepared by refluxing 2 - amino - 4 - methyl - 5 - carbethoxythiazole with diethyl ethoxymethylenemalonate. Specifications 843,541, 843,542 and 974,837 are referred to.
Patent GB-812455-A (GB)
Title: Screw adjustment mechanism
Inventor: WAHL JOHN FRANCIS
IPC: G05G1/00
Filed: 1956-10-08
Abstract: 812,455. Reciprocating motor cores with adjustable means. WAHL CLIPPER CORPORATION. Oct. 8, 1956, No. 30568/56. Class 35. [Also in Groups XIV and XXIV] A screw and nut device 30 for adjusting the mid-point position of the oscillating armature 18, Fig. 1, of an electric hair clipper motor and acting on one of a pair of centralizing springs 25, 26, comprises a primary adjusting screw 32, Fig. 3, adapted to be screwed into and out of the wall 20 to give a primary setting of the armature and a secondary adjustment means in the form of a segment 50 (see also Fig. 2), secured to the screw 32 and co-operating with a pin 47 projecting from wall 20 to provide a limited angular movement. The segment 50 has a portion 40 engaging in a bore of the screw 32 and secured by a holding screw 43. Alternatively the portion 40 may be tapered to snap into a correspondingly tapered bore of screw 32, one or both of these members being of resilient plastic material. Both members have co-operating serrations to prevent relative rotation when assembled together.
Patent GB-299329-A (GB)
Title: Improvements in anti-fouling guards for conveyor belts
IPC: B65G47/76
Filed: 1928-10-22
Abstract: 299,329. Bßnskß a Hutni Spolecnost, and Hauer, V. Oct. 22, 1927, [Convention date]. Antifouling guards. - Material spilled on to the lower run of an endless belt conveyer is prevented from passing around the end drum bv a plough 2 which is pivotally suspended from a fixed part 6 of the frame by arms 5. The plough is provided with rollers 4 which rest on the belt and with an edging 3 of soft elastic material, e.g., rubber, which is nearly in contact with the belt but does not actually touch it. Specification 16857/06 is referred to.
Patent GB-1269444-A (GB)
Title: Fibre reinforced silicone moulding compositions
Inventor: BUSSINK JAN
IPC: C08L83/04
Filed: 1970-06-24
Abstract: 1,269,444. Laminates. AKZO N.V. 24 June 1970 [11 July, 1969], No. 30601/70. Heading B5N. [Also in Divisions C3 and D2] A laminate is obtained by pressing and curing sheets of paper of poly (2:6-diphenylparaphenylene oxide) fibres which have been impregnated with a solution of a silicone resin and dried.
Patent GB-815261-A (GB)
Title: Method for the production of polymerisation products and co-polymerisation products of vinyl-chloride by way of suspension or bead polymerisation
Inventor: ILOFF ARND
IPC: C08F14/06
Filed: 1956-10-08
Abstract: Vinyl chloride polymers and copolymers, e.g. with vinyl acetate, are obtained by polymerization in aqueous suspension in the presence of the sodium salt of a copolymer of styrene and maleic anhydride preferably with a mol. ratio 1:1 as suspension stabilizer and in the presence as catalyst of a mixed anhydride of an organic sulpho-per-acid with a carboxylic acid, preferably acetyl-cyclohexane-sulphonyl peroxide.  The amount of catalyst may be as low as 0.05 per cent based on the monomers; the ratio of monomers to water may be greater than 1:1; and the products may be in the form of small beads.
Patent GB-991619-A (GB)
Title: Improvements in and relating to railway vehicle bogies
IPC: B61F5/52
Filed: 1961-08-24
Abstract: 991,619. Railway vehicle undercarriages. ATELIERS BELGES REUNIS S.A. Aug. 24, 1961 [Aug. 25, 1960], No. 30617/61. Heading B7L. A railway vehicle bogie having a bolster 4, Figs. 1, 2 and 5, supported at its ends 2, 3, by inflatable air mattresses 1 on side frames 6, 7, and connected to the side frames by two longitudinal rods 18, 19 (18 not shown) is characterized in that the bogie frame is formed by two axles 20, 21, Fig. 3, which act as cross-members and by the two side frames 6, 7 which bear against the axle stubs through swinging roller bearings (not shown), the frames 6, 7 also being interconnected by a central cross-piece 25 rigidly secured to the bogie side frame 6 and pivoted at 26 through a resilient bushing 27 to the side frame 7. As shown in Fig. 3, the crosspiece 25 is formed by tubes 29, 30 rigidly connected at 31, 32 to the side frame 6 and connected together at their ends 33, 34 and to the pivot 26 in the side frame 7. The bolster is connected at each end to an hydraulic damper 36 also connected to a lever 37 pivoted at one end on a horizontal spindle 39 on the respective side frame and connected at its other end to a spring 41 also connected to the side frame. The cross-piece 25 is connected to the bolster 4 through a rod 43, a bell-crank 46, 47 and a spring 51, to guide the bolster laterally of the bogie frame. The vehicle body 5, Fig. 5, is connected to the bolster through a central pivot 12 and resilient bush 14 and by slideways 10, 11. The articulation at the pivot 26 has a decreasing spring rate. The mattresses 1 are connected by ducts 9 with compressed air reservoirs 8 in the bolster and a valve system (not shown) controls the air pressure in the mattresses to maintain the body 5 level. The bogie is provided with disc brakes 52, Fig. 2, operable from a rocker 54 and cylinder 53. The axle boxes 56 are connected to the side frames 6, 7 through rubber dampers 55.
Patent GB-734474-A (GB)
Title: Improvements in sensitized photographic emulsions
Filed: 1953-11-06
Abstract: 734,474. Photographic emulsions. KODAK, Ltd. Nov. 6, 1953 [Nov. 8, 1952], No. 30700/53. Class 98 (2). A light-sensitive silver halide emulsion contains a sulphur sensitizer, a gold salt sensitizer, and either spermine, a polyamine of the general formula H 2 N.(RNH) n .RNH 2  (wherein R is an alkylene chain of to 4 carbon atoms and n is 1 to 5), or a water-soluble salt of spermine or the polyamine with a non-desensitizing acid. The sulphur sensitizer may be thiourea, di-otolyl thiourea, allyl isothiocyanate, thiocarbanilide, sodium thiosulphate, thioacetamide; or allyl thiourea, the gold salt sensitizer may be potassium chloraurate, gold chloride, or potassium aurothiocyanate, and the water-soluble salt of the spermine or polyamine may be the acetate, carbonate, sulphate, or hydrochloride. The sensitizers may be incorporated into the emulsion at any stage, but preferably before completion of'digestion, it being preferred to partially digest the emulsion after the addition of the sulphur and gold salt sensitizers and to finish digestion after addition of the polyamine sensitizer. Speed, gamma, and fog data are given for emulsions containing (a) allyl thiourea and potassium chloraurate; (b) as (a) plus triethylenetetramine; (c) as (a); (d) and (e) as (c) containing different quantities of triethylenetetramine; (f) as (a); (g) and (h) as (f) containing different quantities of spermine tetrachloride; (i) as (a); (j), (k) and (1) as (i) containing different quantities of triethylene tetramine; (m) as (a); (n) as (m) containing triethylenetetramine; (o) as (n) containing benztriazole; (p) as (a); and (q), (r), (s) and (t) as (p) containing different quantities of triethylenetetramine. Final digestion of the emulsion with the polyamine compound at pH 6.0 suppresses fog which might arise through extended digestion. The emulsions, which may be coated in single- or multi-layer coatings, may contain anti-fogging and spreading agents and colour couplers. Specifications 570,393, 631,243, 636,140, 661,645 and 663,019 are referred to.
Patent GB-363724-A (GB)
Title: Improvements in pressing machines
IPC: D06F71/06
Filed: 1930-09-23
Abstract: 363,724. Ironing- presses. AMERICAN LAUNDRY MACHINERY CO., Norwood Station, Cincinnati, Ohio, U.S.A. Sept. 23, 1930, No. 30821/31. Convention date, April 18, 1930. Divided on 363,718. [Class 133 (ii).] In a laundry or similar press having a fluid-pressure operated power unit, a supplementary supply of fluid pressure is automatically admitted to the unit to apply the final pressure after the press has been lightly closed. Manually controlled valves (not shown) permit fluid pressure to pass through a pipe 27 to open an inlet valve 29 in a casing 28 against spring pressure and simultaneously to close an exhaust port 31 as in the parent Specifica,- tion. The fluid pressure passes through a port 30 to the cylinder 16 of the power unit and the piston 15 moves to the right to close the press and a cam-shaped bar 65 secured to the pistonrod 14 moves with the piston. Until the press is substantially closed a roller 64 is on the high part of the cam and the other arm 60 of the bell-crank lever 61 carrying the roller 64 and pivoted at 62 is out of contact with the stem 59 of a valve 56 in the supplementary fluid-pressure supply pipe so that the valve 56 is maintained closed by its spring 57. When the roller rides down to the low part of the cam the bell-crank lever rotates clockwise and opens the valve 56 so that the supplementary fluid pressure passes through a pipe 58 to the casing 28 and cylinder 16. When the inlet valve 29 is open a lug 67 on a bell-crank lever 49 pivoted at 50 and linked to the press-opening pedal is clear of a rearward extension 61a of the lever 61. When, however, the press-opening pedal is depressed to rotate the bell-crank lever 49 counterclockwise and close the valve 29 the lug 67 engages the extension of lever 61 and rotates this member counterclockwise so that the valves 56, 29 close simultaneously.
Patent GB-1510627-A (GB)
Title: Electronic commutator system for electric motors
IPC: H02P6/14
Filed: 1975-07-08
Abstract: 1510627 Motor control circuits WALTER JONES & CO (ENGS) Ltd 8 July 1975 [11 July 1974] 30839/74 Heading H2J An electronic commutator system comprises means for switching the current in each winding 22 of an electric motor on and off sequentially, the end of each on period being fixed in relation to a respective predetermined angular position of the armature 20 of the motor whilst the beginning of each on period is controlled so as to occur not earlier than a respective predetermined time after the beginning of a preceding period in the same or another winding. As shown in Fig. 3, the motor has four windings 22 sequentially supplied by switching transistors 26 whose on periods are controlled by gating signals from a gating circuit, Fig. 4, supplied to transistors 24. The gating circuit comprises a set of four NAND gates 40 which have respective first inputs connected to receive signals AB<SP>1</SP>, A<SP>1</SP>B<SP>1</SP>, A<SP>1</SP>B, and AB each representing a different predetermined angular position of the armature. These signals are derived from a Boolean position encoding circuit, Fig. 2 (not shown) which receives inputs from two pairs of light sources and detectors which cooperates with reflective portions on a disc on the armature, Fig. 1 (not shown). The outputs of the NAND gates 42 are applied via inverters 42 to the transistors 24 and to the cathodes of respective diodes 44-47, the anodes of diodes 44, 45 being connected together to a monostable circuit 48, and the anodes of diodes 46, 47 being connected together to a monostable circuit 49. The output of circuit 48 is connected via an inverter 50 to the other inputs of two of NAND gates 40, the other inputs of the other two NAND gates 40 being connected to the output of circuit 49 via inverter 51. The signals which appear during the normal operation, i.e. when the motor is running at a desired speed, are shown in Fig. 5. The trailing edges of the output pulses 42(1)-42(4) of the inverters 42 are coincident with the trailing edges of the position signals AB<SP>1</SP>-AB. However, the leading edges of the pulses 42(1)- 42(4) are delayed with respect to the leading edges of pulses AB<SP>1</SP>-AB by the application of the pulses 50, 51 to the other inputs of NAND gates 40, e.g. the leading edge of pulse 42(1) occurs only when the output pulse of inverter 51 goes positive. Thus energization occurs for less than the possible 90 degree angle of rotation. If the motor is running slower than the desired speed then the pulses AB<SP>1</SP>-AB are longer than the inverted pulses of 50, 51 and therefore the pulses 42(1)-42(4) have the same duration on pulses AB<SP>1</SP>-AB, Fig. 6 (not shown). Thus energization occurs for the full 90 degree angle of rotation. If the motor is running faster than the desired speed, the pulses 42(1)-42(4) are progressively made shorter by delaying their leading edges, Fig. 7 (not shown).
Patent GB-465182-A (GB)
Title: Improvements in two-speed-change gear for power vehicles
IPC: F16D41/00
Filed: 1935-11-07
Abstract: 465,182. Change speed gearing. KOLLMAN-WERKE AKT.-GES. Nov. 7, 1935, No. 30846. Convention date, Nov. 7, 1934. [Class 80 (ii)] Two-speed gearing yields a direct drive and an overdrive and the former is put in by a main claw clutch 12 which allows overrunning until it is locked by a second oppositely-acting oneway claw clutch 13. A planet-carrier 4, Fig. 1, is fast on a driving-shaft 1, and an annulus 10 is fast to a driven shaft 2. The overdrive results when a control lever 9 is moved to apply a brake 8 to a sun gear 6. When the lever 9 is moved left, the brake 8 is released yielding a no-drive position. Continued movement causes clutch dogs 12a of the clutch 12 to pass through openings 16 in the web of the gear 10 to engage clutch dogs 11 on the carrier 4. These dogs 12a and 11 are formed as shown in Fig. 3 and allow overrunning of the driven clutch member 12. This clutch has been let in by a cam 21, Fig. 1, moving out of the way to allow a spring 191 to engage the clutch. Continued movement of the lever 9 moves a further cam 20 out of the way so that a spring 19 advances the clutch member 13 towards engagement. The dogs 14 of this clutch are formed as shown in Fig. 4 with chamfered ends 37 adapted to be repelled by the like ends 38 of the mating teeth 15 as long as the main clutch sleeve 12 is overrunning the carrier 4. When this overrun ceases, the clutch 13 snaps into the position of Fig. 4 so as to lock the shaft 2 positively to the shaft 1 in direct drive. There is described with reference to Fig. 5 (not shown) a non-epicyclic countershaft gear device with a plate clutch in the countershaft overdrive operated along with the improved clutch in the place of the brake 8 of Fig. 1.
Patent GB-723850-A (GB)
Title: Improvements in and relating to toys
IPC: A63H5/00
Filed: 1952-12-05
Abstract: 723,850. Musical toys. FRYER & CO. (NELSON), Ltd., and HAYTHORNTHWAITE J. Jan. 19, 1954 [Dec. 5, 1952], No. 30887/52. Class 132 (3). [Also in Group XXXVIII] A toy comprises a box-like body having a rotatable platform on which figures, e.g. dancers, soldiers, may be mounted, the platform and a musical box below it both being operable by a handle outside the box-like body. In a toy fort, a plate 4 for supporting toy soldiers (not shown) is rotatable by a friction disc 9 operated by a flexible spring drive 11 from a handle 15. A worm 11a engages a worm wheel 13 on the spindle of a musical box, rotation of the handle 15 thus causing the musical box to be operated and the plate 4 to revolve. Soldiers pass in and out of doorways 17 formed in the superstructure of the fort and are detachably held on the plate 4 by clips 7.
Patent GB-1247832-A (GB)
Title: Electrical conductors including superconductor material
IPC: H01P3/12
Filed: 1970-06-25
Abstract: 1247832 Super-conductors SIEMENS AG 25 June 1970 [25 June 1969] 30973/70 Headings H1A A5 A4B and A4D A super-conductor cable comprises a tube having a strip form conductor assembly fixed flat against a lateral external face, the assembly containing wires of super-conductor material twisted about a longitudinal axis of the assembly and embedded in normally conductive material. As shown, Fig. la, a stabilized super-conductor strip 2 comprising Nb-Ti wires 5 embedded in a Cu matrix 4 is soldered using a Pb-Sn alloy to one face of a Cu tube 1. The wires 5 are twisted about the axis of the strip and this is achieved by twisting an oversize strip containing parallel conductors and working by drawing and rolling to a smaller rectangular cross-section. A second stabilized super-conductor strip may be secured to the opposite face of the tube. The cable may be strengthened by securing a strip of non-magnetic steel or of a Cu-Be alloy to the face of a Cu tube opposite to that to which the super-conductor strip is secured, Fig. 2 (not shown), or by making the tube of one of these materials, Fig. 3 (not shown). In a second embodiment, Fig. 4 (not shown), twelve stabilized super-conductor bars are assembled so that they are transposed in turn (Roebel bars) and secured in a frame attached to one face of a normal metal tube. The bars may be insulated from one another and from the frame by layers of lacquer or may be soldered together. A plurality of parallel bars each containing twisted super-conductor wires may be used instead of the transposed bars. For A.C. purposes the superconductor wires may be stabilized with a resistive metal e.g. CU-Ni alloy, and the tube may be of a low electrical conductivity high tensile strength material. The cable may be assembled by joining lengths of tube together by hard soldering into sleeves, joining lengths of the super-conductor strip together by cold pressure butt welding, and securing the strip to the tube by soldering or by electron beam welding. The super-conductor material may also be a Nb-Zr alloy and the stabilizing metal and tube may also be of Al. The solder may also be In or a Sn-Ag alloy and when the normal metal is Al ultrasonic soldering may be utilized.