baber/WOPTO huggingface dataset:
Patent GB-1532452-A (GB)
Title: Exposure regulating circuit and device
IPC: G03B19/18
Filed: 1975-11-07
Abstract: 1532452 Camera exposure control device AGFA-GEVAERT AG 7 Nov 1975 [9 Nov 1974] 46197/75 Heading G2A An exposure control device, especially for controlling the size of a diaphragm 28 or rotary shutter aperture of a cine camera, comprises a differential amplifier 9 which is connected to a bridge circuit to detect the difference between a reference voltage at B and the voltage at the junction A between a photo-cell 5 and a resistor 2, two trigger stages 11, 12, 13 and 15, 16, 17 responsive to the difference voltage such that when said voltage is within a certain range only one stage is triggered and when it is outside the range neither or both stages are triggered, and a control circuit connected to the trigger stages and having output terminals (A1-A4), Fig. 2 (not shown) for controlling a stopper motor (33) so that when neither or both stages are triggered, the motor adjusts the light flow to the film and to the photo-cell 1. As shown, if the light level is low neither stage is triggered, the outputs of both stages are thus at O and logic circuitry produces at a terminal F pulses for the stepper motor (33) and at a terminal G a signal causing the motor to rotate in an aperture opening direction. When the correct light level is reached stage 11, 12, 13 is triggered and the motor stopped. If the diaphragm 28 is opened to its maximum aperture it closes a switch 27 to de-energize the motor. If the light level is too high, both stages are triggered, the outputs of both are thus at I and the motor is switched on and rotated in the opposite direction. Minor modifications are shown in Figs. 3 to 5 (not shown), To take account of film speed, a filter (not shown) may be positioned in front of the diaphragm 28.
Patent GB-1105150-A (GB)
Title: Improvements relating to indexing mechanisms for photographic apparatus
IPC: G03B17/52
Filed: 1965-11-02
Abstract: 1,105,150. Cameras. INTERNATIONAL POLAROID CORPORATION. Nov. 2, 1965 [Nov. 5, 1964], No.46388/65. Addition to 1,100,666. Heading G2A. In a modification of the self-processing camera described in Specifications 1,105,148, 1,105,149 and 1,100,666 the disc 116 is prevented from rotating by a projection 118 thereon being engaged by the edge of a cantilever spring 160, which is coupled for longitudinal movement with the cutting member 136, when the cutting member is in its operative position. When the cutting member 136 is moved to an intermediate operative position a notch 178 in the edge of spring 160 becomes aligned with projection 118, so that the projection and the disc 116 may rotate and the sheets be pulled from the camera. When the cutting member is moved further towards its extreme inoperative position, the notch 178 and projection 118 move out of alignment and the disc 116 cannot rotate, so that if the cutting member is jammed in this position when pushed from the operative position, only a single frame of film will still be withdrawn.
Patent GB-1362403-A (GB)
Title: Phenol-acetophenone separation
IPC: C07C39/04
Filed: 1971-10-06
Abstract: 1362403 Phenol-acetophenone separation HERCULES Inc 6 Oct 1971 [8 Oct 1970] 46562/71 Heading C2C A process for separating phenol from the atmospheric pressure azeotrope of phenol and acetophenone comprises distilling said azeotrope under a pressure which is higher than the ambient atmospheric pressure. In a preferred embodiment the bearing ends fraction of cumene hydroperoxide cleavage reaction mixture is subjected to said distilling to yield a product comprising hydrocarbons and phenol and maintained (a) in the range of temperatures at which pyrolysis of the pyrolysable portion of said fraction to phenol and hydrocarbons occurs, (b) at a pressure which is higher than the ambient atmospheric pressure and (c) for a period of time sufficient for substantial pyrolysis of the pyrolysable portion of said fraction to phenol and hydrocarbons to occur, whereby during said distilling a phenol-acetophenonemixture is formed in situ which at the ambient atmospheric pressure is an azeotrope and whereby said product is formed as a vapour and removing said vaporous product from the residue of said fraction. Apparatus for carrying out the process is described referring to the drawing (not shown).
Patent GB-1172605-A (GB)
Title: Device for Plane-Cutting the Surfaces of Moulded Blocks of Lightweight Concrete or Similar Material
Inventor: JAKOBSSON PER
IPC: B28B17/00
Filed: 1967-10-12
Abstract: 1,172,605. Working stone. YTONG INTERNATIONAL A.B. 12 Oct., 1967 [4 Nov., 1966], No. 46680/67. Heading B5E. A device for removing irregularities from the surfaces of e.g. moulded blocks of lightweight concrete comprises a shaft 11 having secured thereto spaced plates 12 over which are stretched wires 18, 19, 20, 21, 22, 28, 29, 30, the wires being pulled radially inwardly by means of hooks 27 secured to plates 26. The plates and hooks may be replaced by bands.
Patent GB-1081975-A (GB)
Title: A ladder cord or ladder tape carrier
IPC: E06B9/382
Filed: 1964-11-17
Abstract: 1,081,975. Venetian blinds. HUNTER DOUGLAS INTERNATIONAL Ltd. Nov. 17, 1964 [Dec. 17, 1963], No. 46749/64. Heading E1J. The carrier 11 for the ladder cord or tape 12, 13 of a venetian blind is lightly fastened on the rotatable operating shaft for the lift cords and comprises two curved legs 11 to grip around the operating shaft and has at least one axially directed member 15, 16, which in conjunction with the radial projection 14 holds the cord or tape 13 when under tension, on the carrier and also functions as a stop which comes up against an abutment on the head rail or other member such as the bearing of the shaft, to cause the carrier to act as a friction clutch against the movement of the carrier on rotation of the shaft to close or open the slats.
Patent GB-1207353-A (GB)
Title: Combination time and impact fuze
IPC: F42C19/02
Filed: 1967-10-16
Abstract: 1,207,353. Projectile fuzes. RHEINMETALL G.m.b.H. 16 Oct., 1967 [18 Oct., 1966], No. 47072/67. Heading F3A. A fuze which operates either on impact of a fuze-carrying shell, or, at a predetermined point in its trajectory as defined by a delay device comprises, a fixed part 2 and a relatively movable part 1, the part 1 carrying a reference mark which can be detected by touch alone, e.g., a spring-loaded locking pawl 5, and the other part 2 carrying a series of range markings a to f (d and e, not shown) with which the reference mark can be aligned to indicate the fuze delay time, the range markings being raised so that the fuze delay time corresponding to each marking can be ascertained individually by touch alone, and the fuze can be set and fixed as required by hand. The markings consist of studs, figures or numbers. The delay device comprises clockwork or a combustion fuze. In another embodiment (Fig. 3, not shown) the parts of the fuze are locked by complementary castellations (8 and 9) on each part, and the reference mark is constituted by a raised portion (10).
Patent GB-992200-A (GB)
Title: Unsaturated polyester resins containing cyclohexene-(1)-dicarboxylic acid-(4,5) radicals
Inventor: LAUTENSCHLAGER WALTER
IPC: C08G63/676
Filed: 1963-12-06
Abstract: Unsaturated polyester resin systems contain (1) at least one monomeric ethylenically unsaturated polymerizable compound and (2) at least one resinous ethylenically unsaturated polymerizable polyester containing, connected via ester linkages (a) radicals of dibasic carboxylic acids, (b) radicals of dihydric alcohols and optionally (c) radicals of other carboxylic acids and/or (d) radicals of other alcohols, at least a portion of the radicals of dibasic carboxylic acids being radicals of cyclohexene-1-dicarboxylic acid-4,5 radicals and at least part of the radicals of the polyester which are not cyclohexene-1-dicarboxyli acid-4,5 radicals having ethylenically unsaturated polymerizable groups, wherein said unsaturated polyester resins contain polyesters (2) whose hydroxyl number (HN) and acid number (AN) are in a ratio of (HN): (AN) of less than 1, preferably less than 0.2. In general the mean molecular weight of the polyesters is between 1000 and 5000 and, if desired, a portion of these polyesters in the polyester resins may be replaced by one or more conventional polyesters.  Lists of compounds (1), (2a) (2b) (2c) and (2d) are given, but the preferred polyesters (2) are prepared from radicals of cyclohexene-1-dicarboxylic acid-4,5 (a1) and radicals of maleic acid (a2) and/or radicals of fumaric acid (a3) in the molar ratio of (a1): [(a2) + (a3)] of 1:3 to 1:0.5, and as radicals (b) radicals of aliphatic ether diols of the type 3-monooxaalkanediols 3,6-dioxaalkanediols and 3,6,9-trioxaalkanediols having 4 to 12 carbon atoms, preferably radicals of 3-oxapentanediol-1,5. Other preferred polyesters (2) are prepared from cyclohexene-1-dicarboxylic acid-4,5 as radicals (a) and as radicals (b) radicals of dihydric aliphatic ether diols of the type mono-(allyloxy)-alkanediols and di-(allyloxy)-alkane diols having 6 to 12 carbon atoms, e.g. glycerine monoallyl ether radicals and/or pentaerythritol diallyl ether radicals.
Patent GB-1213373-A (GB)
Title: Diverter switch arrangement
Inventor: MATZL MANFRED
IPC: H01F29/04
Filed: 1968-10-11
Abstract: 1,213,373. Transformers. E. SCHEUBECK. 11 Oct., 1968 [18 Oct., 1967], No. 48332/68. Heading H1T. A transformer on-load tap-changing system incorporates a semi-conductor device H including a main thyristor 13 associated with a rectifier bridge 9, 10, 11, 12 to carry the load during changeover from one tapping e.g. A to another e.g. B, blocking of the thyristor 13 being accomplished at the appropriate point by discharge of a capacitor 16 on triggering of an auxiliary thyristor 15. On opening switch 3 the short-circuit across device H is removed and the load current passes through thyristor 13 which is receiving triggering pulses from transformer 19 via rectifier 21 and control device 30 across switch 4. Switch 4 is then closed whereupon transformer 19 is de-energized and ignition pulses are no longer sent to thyristor 13. At the same time the short-circuit current through device 23 causes device 30 to trigger auxiliary thyristor 15 whereupon capacitor 16 discharges through thyristor 13 and blocks it. After 13 blocks switches 5, 6 and 7 are moved over to their b contacts. If 13 fails to block fuse 18 blows and a warning indication is given.
Patent GB-1020041-A (GB)
Title: Bottle holder for shelves in refrigerator doors
IPC: F25D23/04
Filed: 1962-12-28
Abstract: 1,020,041. Cabinets &c. ELECTROLUX Ltd. Dec. 28, 1962 [Jan. 17, 1962], No. 48773/62. Heading A4B. [Also in Division F4] A bottle holder, Fig. 1 (not shown), for a refrigerator door shelf 15, comprises a strip 17 secured to the shelf or to the door and having resilient fingers 20 which extend into the bottle space and press bottles therein against the inner side of the door, or against the edge of the front side of the shelf. The strip 17 is of polythene and is secured in position by a channel section metal rail secured to the inner wall of the door. The strip is provided on its upper edge with a row of further fingers (Fig. 3, not shown) alternately angularly disposed to each other so that they can be pushed into alignment and assembled to the metal rail after the holder has been removed for cleaning. In another construction the strip is of inverted V or U-section one of the limbs therof being riveted to the door. Alternatively the strip is provided with a T-section longitudinal groove adapted to mate with the upper edge of the shelf. The fingers may be shaped to contact the bottles in two places.
Patent GB-1405104-A (GB)
Title: Tracked vehicles and suspension systems therefor
IPC: B61B13/04
Filed: 1971-10-20
Abstract: 1405104 Air cushion vehicle; mounting bodies SPERRY RAND Ltd 3 Oct 1972 [20 Oct 1971] 48858/71 Headings B7K and B7L A vehicle 1 for operation along a prepared track 2 has a structure 12, co-operating with the track, which is connected to the vehicle body by at least one pair of actuators 29, 108 acting in parallel, the actuators 29 being energized to produce a constant force equal to a mean value of a required variable force to be transmitted between the body and the structure, and the actuators 108 being energized to produce a controllable force equal to the difference between the said constant and variable forces. The vehicle is supported from the track by gas cushions generated in pads 5 and is propelled by a linear induction motor whose stator 11 forms part of the structure 12, which is carried by links 15, 16 connected by cranks 24 to the actuators, hydraulic rams 29, 108. Both sides of each actuator 29 are connected to fluid pressure line 178, Fig. 5, to provide the constant force on differential area piston 190, while both sides of bias actuators 87 are connected to the line 178 to provide no bias to spool valves 140, which are controlled by signals from circuit (114), Fig. 6 (not shown), to govern the respective rams 108. The distance of the structure 12 from the track near its corners is measured by sensors 121, (122), (123), 124 which feed the circuit (114), which calculates the deviation of the structure in heave, pitch and roll and the forces needed from each ram 108 to maintain the stator parallel to the track and at a constant distance. The structure is moved horizontally by hydraulic rams 73 controlled by valves 77 in response to signals from circuit (143), Fig. 8 (not shown), which calculates deviations in sideslip, yaw and the horizontal component of roll. The structure 12 carries skids 13, 14 for engaging rails 17 to prevent contact between the stator and the track. In the event of an emergency an explosive device 187 is operated to cause valve 188 to connect one side of each ram 29 and, by means of the bias actuators 87 and valves 140, of each ram 108, to low pressure, rapidly raising the structure 12, which is then retained by latch 262. Controlled retraction of the structure 12 is effected by providing the appropriate signals to the servo valves 140, valve 175 in the supply line 178 being closed so that all the fluid passes through restrictor 174. Traction and braking forces are transmitted between the structure 12 and the vehicle body by thrust bars 101. The structure whose movement is controlled as described may alternatively be a bogie providing support and/or guidance by co-operating with the track through a gas cushion or wheels.
Patent GB-1324439-A (GB)
Title: Slit-lamps
IPC: A61B3/135
Filed: 1970-10-15
Abstract: 1324439 Optical apparatus R RODENSTOCK 15 Oct 1970 [29 Oct 1969] 49135/70 Heading G2J An illuminating system for an opthalmoscope comprises an incandescent lamp 1, a plurality of positive lens members 2a, a negative lens member 2b and an optical slit 3 in proximity to the negative lens 2b. The negative lens member may comprise two elements with the slit between.
Patent GB-1169537-A (GB)
Title: Improvements in or relating to Mean Level Volt Meters
Inventor: PERCIVAL WILLIAM SPENCER
IPC: G01R19/22
Filed: 1965-11-19
Abstract: 1, 169, 537. Voltage measurement. ELECTRIC & MUSICAL INDUSTRIES Ltd. Nov. 10, 1966 [Nov. 19, 1965), No.49145/65. Heading G1U. A mean level A. C. voltage measuring arrangement incorporates a diode bridge arrangement 1 - 4 across one diagonal of which, A. C., the input voltage to be measured is applied, while across the other a D. C. instrument 9 in series with a resistor 10 is connected. The diodes are biased by a standing current through the instrument 9, derived by applying a voltage at 11 to the instrument circuit. In this way errors occurring with low inputs, which would normally cause the diodes to operate over non-linear parts of their characteristics, are avoided. The biasing voltage and the various resistance values are selected so that the instrument reading is completely accurate for at least two values of input. In a modification Fig. 2 (not shown) the resistor 10 is shunted by a diode and resistor to increase the accuracy of the arrangement. In a further modification Fig. 3 (not shown) accuracy is increased by applying the input through a negative feedback amplifier which has the circuit described above connected both as its load circuit, and to provide a current feedback path in the amplifier.
Patent GB-491916-A (GB)
Abstract: 491,916. Soot blowers. BRITISH THOMSON-HOUSTON CO., Ltd., and JEFFERSON, H. F. March 8, 1937, No. 6820. [Class 99 (ii)] In a boiler soot blower of the kind comprising a nozzle which is mounted on the end of a blower tube and is advanced into and withdrawn from its operative position adjacent the tubes to be cleaned by a rotatable shaft 1 provided with a hand wheel and associated with a screw engaging a nut on said blower tube, an electric motor (not shown) is coupled to the shaft 1 through a slipping clutch and means is provided for automatically reversing the direction of rotation of the motor, and consequently the shaft, a predetermined number of times. These means comprise a screw shaft 5 coupled at 3 to one end of the operating shaft 1, a non-rotatable nut 7 in engagement with the shaft 5, a motor-reversing switch 23, and a second switch (not shown) controlled by a spring-pressed lever 41. The switch 23 is actuated by the nut 7 through a plate 13 which is provided with end projections 25 engageable by the nut 7 at each end of its travel and with a pin 19 for engagement with a lever 21 of the switch 23, the plate being mounted on fixed studs 15 which pass through short slots therein so that the plate is movable slightly in a direction parallel to the shaft 5. The arrangement is such that, provided the second switch controlled by the lever 41 is closed, when the nut reaches the end of its travel it will engage one of the projections 25 to move the plate and actuate the switch 23 to reverse the motor. The lever 41 is normally supported on the periphery of a disc 39 fixed on a shaft 27 which is rotated step-by-step by the nut 7 through a pawl and ratchet mechanism 31, 33 and a link 35 provided with a slot locating a pin 37 on the nut. The disc is formed with notches 43 which, when in alignment with a roller on the end of the lever 41, permits the latter to move downwards to open its switch and stop the motor, the number of notches on the disc and teeth on the ratchet determining the number of reciprocations of the blower nozzle, viz. three in the construction shown. A limit switch 11 operable by the nut 7 also is provided, said switch being adapted to control the movement of a sequence switch as described in Specification 491,915, [Group XXXVII], for subsequently transferring the operation to another blower tube, so that a number of blower tubes may be operated in sequence.
Patent GB-1091050-A (GB)
Title: Improvements in or relating to pile fabrics
Inventor: KREISEL HARTMUT
IPC: D04B23/08
Filed: 1964-12-03
Abstract: 1,091,050. Pile fabrics. NAHWIRKMASCHINENBAU MALIMO KARL-MARX-STADT VEB. Dec. 3, 1964, No. 49210/64. Headings D1C, DIG and D1K. A pile fabric is produced by knitting through or chain stitching together two webs 4, 5 and subsequently removing the web 4 which is nearest the ends of loops 11. In a weft knitting machine the fabric webs 4, 5 may be held further apart than is shown in Fig. 3 to produce a longer pile loop 11a. The fabric may be produced on a warp knitting machine as a tricot or chain stitch effect. The fabric web 4 may be used a number of times or may be formed of a water soluble polyvinyl compound. A grooved roller or a bar may be used to disengage the loops to remove the web 4.
Patent GB-1022848-A (GB)
Title: Wire reel
IPC: B65H49/30
Filed: 1964-12-07
Abstract: 1,022,848. Wire dispenser. L. W. WASSON. Dec. 7, 1964 [Dec. 30, 1963], No. 49688/64. Heading A4G. A wire dispensing device comprises two sections 6 and 7 having circular side walls 10 and 20 with shafts 9 and 22 extending inwardly and supporting hubs 15 and 25 and integral circular plates 14 and 24. Section 7 also has an end wall 28 which is hinged to the side wall 10 at 30 and locked in closed position by a locking member and hasp 42 and 40. A coil of wire is placed around the hubs 15 and 25, which are locked in rotational engagement by interlocking the ends of reinforcing ridges 16 and 26. The free end of the wire is led out through an opening 50-53 or one of a series of slits in the end wall 28. The device may be supported on a belt by threading the belt through holding brackets 60 or holes in the side wall 20.
Patent GB-1439148-A (GB)
Title: Self-propelled line-carrying equipment board game apparatus
IPC: F42B12/68
Filed: 1972-10-30
Abstract: 1439148 Line-carrying socket SCHERMULY Ltd 29 Oct 1972 [30 Oct 1972] 49933/72 Heading F3X A line-carrying rocket is in combination with a member detachably mountable on the rocket by a bayonet joint, the co-operating parts of which are provided on the forward end of the rocket and on the member respectively. The rocket comprises a casing 1, having propellant therein, and a support 3, which has limbs 5, 6 and 7 and is secured to the easing 1 by screws 4 which pass through the limb 7. The member may be a buoyancy member 13, an anchoring member, a grapnel or a signalling member. The bayonet joint comprises the limb 7 of the support 3 and a tube 16 which is provided with slots 17 and is carried by the member 13. The two parts of the bayonet joint are maintained in engagement by a spring 19 and a plunger 18, or by a pad of resilient material (not shown). The limbs 5 and 6 of the support 3 extend beyond the choke end 9 of the casing 1 and are connected to the line 12 via limbs 11, 11 of the stirrup 10.
Patent GB-1221040-A (GB)
Title: Improvements in and relating to feed devices for automatic machines
Inventor: MACFARLANE GEORGE CULLEN
IPC: B23B13/12
Filed: 1969-10-13
Abstract: 1,221,040. Bar-stock feeding. MACFARLANE THIRSK (ENGS.) Ltd. 13 Oct., 1969, No. 50116/69. Addition to 1,165,872. Headings B3B and B3T. A work-stock feed device as described in the parent Specification 1,165,872 but wherein the encircling spring 1 is orientated on the body in a position wherein the gap 5 in the spring is positioned substantially equidistant from the edges of the separate part 3 or parts 8, 9 and is provided with a step region 4 or 10, Figs. 1 and 5, respectively which engages a corresponding projecting portion on the body or separate part to prevent movement of the spring around the body when the device is in use.
Patent GB-1285725-A (GB)
Title: Improvements in and relating to magnetic processing arrangements
IPC: G11B5/86
Filed: 1969-10-13
Abstract: 1285725 Magnetic contact-copying RICOH KK 13 Oct 1969 [20 Oct 1968 (4) 17 Jan 1969 20 Feb 1969] 50243/69 Heading G5R In a magnetic copying process, a master sheet 2 is pressed against a copy sheet or web in which locating holes are punched while a movable transfer field is applied. As shown, the master 2 carrying an annular recording is supported and located by spigots (1a, 1b, Fig. 2, not shown) on a platform 1 below which are rotatably mounted four electromagnets 5. The drive to the electromagnets is geared 13, 15 to drive cams (35, 36, Fig. 8, not shown) to raise and lower a rubberfaced press 4 carrying punches, to reciprocate a cutter 12 to divide the web into sheets 3d, and to drive rollers 10, 11 intermittently via a one-way clutch (51). A roller 8 is associated with a brake for the roll 3 (Fig. 11, not shown) to control the tension in the web. The punchings are removed by vacuum parts in the platform 1. In a modification (Figs. 13-17, not shown) separate copy sheets are fed by two pairs of rollers until they abut a movable stop, the components being driven by a cam assembly. Where a single electromagnet provides the transfer field, it is energized for longer than one revolution to ensure complete transfer, and the next operation starts at that position to prevent the same area of the master being subjected excessively to the field.