baber/WOPTO huggingface dataset:
Patent GB-835054-A (GB)
Title: Objective having a very large aperture
IPC: G02B13/00
Filed: 1957-05-07
Abstract: 835,054. Optical objectives. SOC. D'OPTIQUE ET DE MECANIQUE DE HAUTE PRECISION. May 7, 1957 [May 11, 1956], No. 14489/57. Class 97(1) An objective of aperture greater than F/1.4 and focal length F comprises a convergent lens c of focal length F 1  and convex towards the front, divergent meniscus doublets d and e, a biconvex lens f and a biconvex doublet g, the focal lengths F' and F 1  and the radii of curvature R 3  R 5 , R 6 , R 9 , R 10  being such that 2F<F 1 <4F, 0.65F<R 3 <0.85F, 0.4F<R 5 <0.5F, 0.4F<R 6  <0.5F, 2F<R 9 <4F, and 2F<R 10 <4F. Preferably, the cemented surface of radius R 4  is substantially planar and the radii R 11  and R 13  of the rear lens are such that R 11 <R 13 , lens c, lens f and each element of lens g preferably have a refractive index greater than 1-65.
Patent GB-611952-A (GB)
Title: Improvements in or relating to a magnetic recording and reproducing head
IPC: G11B5/03
Filed: 1946-05-14
Abstract: 611,952. Sound recording and reproducing apparatus for steel wire. ARMOUR RESEARCH FOUNDATION. May 14, 1946, No. 14516. Convention date, Nov. 29, 1945. [Class 40 (ii)] A combined magnetic recording, reproducing and erasing head for recording sound on steel wire has a core of thin magnetic material having three limbs, the centre one 13 being T-shaped, and the two outer ones being straight and arranged to form two magnetic gaps 23, 24. One limb 14, Fig. 2, carries an erase coil 16, whilst the limb 15 carries an audio-frequency coil 17 and a high-frequency coil 18. Switch contacts 31, 32, 33 are provided, whereby the erase coil 16 may be short-circuited, during reproduction, in order to provide a counter M.M.F. to neutralize stray flux variations which are generated by the wire 34 when passing the gap 23, and which link the audio-frequency coil 17. In the event of the M.M.F. so produced being insufficient for the purpose, the switching may be set to include the high-frequency coil 18 in the short-circuit to provide additional counter M.M.F.
Patent GB-864693-A (GB)
Title: Apparatus for cleaning sheet material by sonic vibrations
IPC: B08B3/12
Filed: 1958-05-07
Abstract: 864,693. Cleaning glass sheets. LIBBEYOWENS-FORD GLASS CO. May 7, 1958 [May 17, 1957], No. 14574/58. Class 138(1). [Also in Group XXVIII] Polishing rouge, plaster, and other foreign matter are removed from glass sheets after a polishing operation by conveying the sheets 22 through a tank 30 containing liquid, e.g. water 31, so that the lower surfaces of the sheets are cleaned by mechanical vibrations applied through the liquid by electromagnetic transducers 26 mounted in the lower wall 32 of the tank and having vibrating faces 28 closely adjacent.the path through the tank of the face to be cleaned. The transducers 26 are arranged in rows, those in one row being staggered relatively to those in the adjacent row or rows, and the glass sheets are conveyed by rollers 20 adjustable in height. Means for mounting the transducers are described.
Patent GB-569439-A (GB)
Title: Moisture testing device for determining the moisture content of fibrous materials, when stationary or in motion
IPC: G01N27/04
Filed: 1943-09-07
Abstract: 569,439. Determining physical qualities of materials. BROOKES, N. E. (Heberlein & Co., Akt.-Ges.). Sept. 7, 1943, No. 14640. [A Specification was laid open to inspection under Sect. 91 of the Acts, April 13, 1944.] [Class 37] Apparatus for determining the moisture content of fibrous materials, when stationary or in motion, is characterised in that the material to be tested is located in a D.C. circuit which serves for charging a condenser which is bridged by a gas discharge lamp, the ignition voltage of which is lower than the voltage of the D.C. circuit. As shown in Fig. 1, a web E of damp material such as paper is moved between brushes D connected in series with a resistance C, switch B, voltage source A and a gas discharge lamp G shunted by a condenser F. When the material E is very damp, the condenser F quickly charges to the ignition voltage of the lamp G and the lamp flashes rapidly, but as the web dries, the frequency of the flashing is reduced and this is used as a measure of the moisture content of the material E. In Fig. 4, the brushes are in the form of bow-shaped metal plates J pivoted on rods L, and resting on the web of material H at spaced positions. The method is also applicable to the testing of stationary sheets of material.
Patent GB-263672-A (GB)
Title: Improvements in couplings for vehicles
IPC: B61G1/36
Filed: 1926-06-11
Abstract: 263,672. Franks, T. June 11, 1926. Couplings, non-automatic.-A link-ejecting device on a coupling hook 10 comprises a lifter 20 slidably mounted on the hook so that it can be raised to eject the link or coupling member from the hook and when raised is capable of a rocking movement which retains it from falling to the lowered position until it is displaced. The hook is provided with oppositely-projecting flat-sided pins 15 arranged with the flat sides slightly tilted to the vertical, the upper part of each pin being tilted forwardly away from the vehicle. The lifter 20 is provided with keyhole-shaped slots 27 which engage with the pins 15, and with projections 22, 23 which form respectively locking and ejecting members for the link. The lifter is connected' by a link 30 having an elongated slot 32 with a crank 38 on a transverse shaft 35 operated from either side of the vehicle by a handle 37. The inclination of the sides of the pin 15 prevents the lifter from rising due to a blow from the link during draught or buffing, but does not interfere with the upward movement when operated through the crank 38. In the raised position of the lifter, the coupling link is ejected from the hook and the pin 15 enters the keyhole 26 in the end of the slot 27 and permits the lifter to tilt rearwardly where it is retained when the operating handle 37 is released. When the opposing coupler link is placed on the lifter the latter tilts so that the pin 15 enters the slot 29 and allows the lifter to descend and lock the coupling link in the hook.
Patent GB-278408-A (GB)
Title: A new or improved apparatus for stair trenching and the like
IPC: B27M3/12
Filed: 1926-06-11
Abstract: 278,408. Shurmer, T. June 11, 1926. Trenching.-In a machine for trenching staircase stringers and for like operations, cutters 28a are mounted, each with its driving motor 27, on carriages 26 which run by ball bearings on perpendicular guides 30<a>, being moved independently by means of handles or otherwise. The guides are carried by a pillar 21 mounted to rotate on a slide 16 which can be adjusted laterally across a support 11 by a screw 17 and hand-operated gearing 20, whilst the support 11 is vertically adjustable on a pedestal 4. The work is clamped on a table 9 which runs on rollers 8 carried in a support 6 rotatable on a pedestal 3. This support with the table is normally held by two levers 39 engaging stops 32, 33 carried by the pedestal 3; by raising either of these levers, the table can be rotated a small amount until the other lever engage one of two adjustable inner stops 34, 35, whereby after one side of a trench has been cut the other side may be cut at a slight angle thereto. A set of adjustable stops 40 along the edge of the table coacts with a pivoted catch 41 to determine the spacing of successive trenches.
Patent GB-1196087-A (GB)
Title: Adhesive Composition
IPC: C09J123/22
Filed: 1968-03-27
Abstract: 1,196,087. Adhesive composition. POLYMER CORP Ltd. 27 March, 1968 [19 April, 1967], No. 14791/68. Heading C3P. An adhesive composition comprises a dispersion in a volatile organic liquid of a mixture of a cross-linked polymer of isobutylene, an elastomer and a tackifying resin, the polymer  containing at least 20% by weight of gel. The amount of organic liquid present is preferably not less than 80% by weight of the composition. The proportion of tackifying resin to crosslinked polymer is preferably between 0À25:1 to 10: 1 by weight. The elastomer may be a butadiene-styrene copolymer present in from 1/3 to not more than 5 parts per part of cross-linked copolymer. In the examples, a copolymer of isobutylene, isoprene and divinyl benzene is dispersed in toluene and a butadiene-styrene copolymer, wood rosin and an antioxidant added thereto. Instead of wood rosin, an alkyl phenol aldehyde resin may be used. In some examples, butyl rubber and a butadiene-acrylonitrile copolymer is used instead of the butadiene styrene copolymer.
Patent GB-418235-A (GB)
Title: Improvements in producing reaction between fluids
IPC: C10G47/22
Filed: 1933-05-22
Abstract: Chemical reactions between liquids and elastic fluids at pressures of 100 atmospheres or more are effected by passing the reactants through a tube of diameter not exceeding 2 inches, the rate of flow of one or both of the reactants being such as to produce turbulent flow of the mixture.  The invention is particularly applicable to hydrogenation process.  According to an example, a tar oil distilled from low-temperature tar by the method described in Specification 387,459 is passed together with hydrogen, at 200 atmospheres and 505 DEG  C., through a coil of tube \ba1/4\be inch in diameter.  The rate of flow of oil is 1520 cc. per hour and that of hydrogen (corrected to atmospheric temperature and pressure) is 671 cu. ft. per hour.
Patent GB-1418781-A (GB)
Title: Pneumatic tyres
IPC: B60C11/00
Filed: 1973-03-28
Abstract: 1418781 Pneumatic tyres L V DESIDLEI M I REKITAR and V V DROZDOVA 28 March 1973 14832/73 Heading B7C A pneumatic tyre comprises a breaker 4 and a carcass 1 having radial cords secured in beads 2, and is characterized in that the ratio of the cross-sectional height H to the cross-sectional width B is between 0À85 and 1À1, and the ratio of the cross-sectional radius R of the tread 5 to the cross-sectional height H is between 2À6 and 3. A tyre constructed in accordance with the invention is said to have an increased wear resistance of the tread. The beads 2 may include metal bead cores. The edges of the tread 5 may be rounded at a radius r.
Patent GB-1085560-A (GB)
Title: Carton
IPC: B65D83/08
Filed: 1966-04-04
Abstract: 1,085,560. Dispensing carton. CANADIAN INTERNATIONAL PAPER CO. April 4, 1966 [May 15, 1965], No. 14890/66. Heading B8P. A carton for dispensing tissues has a dispensing opening 46, and serving flap means hinged to the inside of the carton to engage witha stack of tissues on the bottom of the carton, the serving flap 38 having a hole 39 that underlies the dispensing opening 46. The stress due to the fold 40 acts as a spring to hold the flap 38 against the pile of tissues. In a modification, Fig. 6 (not shown), the flap is a double flap.
Patent GB-126401-A (GB)
Title: Improvements in and relating to Doffing Mechanism for Spinning, Twisting and the like Machines.
Inventor: BINNS WILLIAM
IPC: D01H9/00
Filed: 1918-03-11
Abstract: 126,401. Binns, W., and Mander, J. D. March 11, 1918. Doffing-mechanism.-In an arrangement in which the empty bobbins are carried over the spindles by clips and the ends are guided by spring fingers mounted on the clips, the fingers 4 are pivoted at 5 towards the rear of the clips 2, so that as the clips are withdrawn leaving the empty bobbins on the spindles, the ends 10 are taken completely around the spindles. The finger 4 may be pivoted and controlled by a light spring 11 or may be itself a wire spring secured to the clip.
Patent GB-964273-A (GB)
Title: Improvements in low flux density ferromagnetic materials
IPC: C04B35/26
Filed: 1961-04-26
Abstract: 964,273. Magnetic compositions. INTERNATIONAL BUSINESS MACHINES CORPORATION. April 26, 1961 [May 27, 1960], No. 15056/61. Heading H1H. Low flux density magnetic materials having a square hysteresis loop are specified by the formula Cr w , Mn x  Ni y  Fe z  O 4  where w is between 0.4 and 1.2 x is between 0.7 and 1.6 y is between 0.1 and 0.4 z is between 0.6 and 1.3 and w+x+y+z=3 and have a flux density B not more than 400, a value Bu/Bs greater than 0.7, a coercive force of about 2 Oe and a switching constant of about 0.2 Oe. Á sec. In preparation, appropriate quantities of the metal oxide powders are mixed, calcined at 900 C., pressed into cores, sintered at 1350-1400 C. in air, and refired in air at a lower temperature. Slow cooling or quenching may be effected and firing schedules are specified in the Specification
Patent GB-481707-A (GB)
Title: Improvements in rubber surfaced pulleys
IPC: F16H55/48
Filed: 1937-05-31
Abstract: 481,707. Pulleys. UNITED STATES RUBBER PRODUCTS, Inc. May 31, 1937, No. 15059. Convention date, June 3, 1936. [Class 80 (i)] A pulley covering comprises a band of rubber composition 3 provided with longitudinal grooves 5 connected by transverse grooves (not shown). The cover is bound on the pulley by a single wire 7 seated in the longitudinal grooves and passing through the transverse grooves, as shown at 11, from one longitudinal groove to the next. The ends of the wire are secured at 12, 13 in the outside grooves, for example by soldering. The edges 10 of the covering may be of less height than the central portions. The wearing surface of the rubber may be provided with small transverse incisions (not shown). The rubber layer 3 may be provided with a fabric backing 4.
Patent GB-550297-A (GB)
Title: Improvements relating to automatic stopping mechanism for core covering or lapping machines
IPC: B65H81/08
Filed: 1941-11-24
Abstract: 550.297. Covering cores by winding. MACKIE & SONS, Ltd., J., and MACKIE, J. P. Nov. 24, 1941, No. 15132. [Class 109] In a core covering machine the lapping guide e, Fig. 1, carries an adjustable collar k having a groove in which is pivoted an arc-shaped arm n carrying a pin p projecting from the end of the arm and lying against the guide with the arm housed in the groove when the lapping material h passing to the core f from the supply is led over the pin into the spiral groove d of the guide. If the material h breaks the arm n flies outwards and, in its rotation, strikes a tappet t for actuating the stop mechanism. When there are two lapping guides in series carrying flyers which rotate in opposite directions, the arms engage tappets b, Fig. 4, on a shaft s carrying a cam r having a surface sloping each way from a crest normally supporting a pin y on a collar on a spring-pressed shaft a; should the strand from either flyer break, the shaft s is rotated to move the crest of the cam r from the pin y, the shaft a being then moved downwards by its spring v so that a tappet w thereon disengages a pivoted latch l from the starting handle x' which is then moved by a spring x<1> to the stopping position. The collar k and arm n may be made of such a size that a new spool of yarn can be slipped thereover on,to the flyer without interrupting the continuity of the covering operations. the spare spool being supported beyond the lapping guide with the core passing through it ready to be slipped down into place on withdrawal of the support.
Patent GB-184614-A (GB)
Title: Improvements in or relating to devices for emptying beer barrels and the like
IPC: B67D7/00
Filed: 1921-06-01
Abstract: 184.614. Gallimore, J. June 1, 1921. Siphons.- To draw off the " bottoms " from beer barrels, the tap is removed and a siphon, comprising a strainer a containing sponge &c. band fitted with a curved tube c<3> to which is attached a flexible tube e, is passed into the barrel through the tap-hole. The flexible tube ends in a nipple f, the inner and outer flanged ends of which have small perforations f<3> to assist in trapping solid particles. An india. rubber ball may be applied to the nipple to start the siphon-action.
Patent GB-200800-A (GB)
Title: Improvements in an electro-mechanical lamp, with winding up device, for domestic use
IPC: F21L13/06
Filed: 1923-06-11
Abstract: 200,800. Luzy, A. July 13, 1922, [Convention date]. Dynamos, driving.-A portable electric lamp comprises a bulb 43, a dynamo 3, 4 for supplying it with current, and an axially expanding spring 38 for driving the dynamo. The spring is adapted to be wound up by a key 28, which turns a shaft 20, bevel pinions 30, 32, and a pinion 34; these pinions are mounted in a frame that travels upwards and compresses the spring as the pinion 34 runs on a fixed rack 35. The spring drives the dynamo through bevel-gearing 19, 17 connected to the shaft 20 by a free-wheel device. A detent 42 can be engaged with the rotary magnet 4 of the dynamo when the lamp is not in use.
Patent GB-107508-A (GB)
Title: Improvements in or relating to Card Indexes.
Inventor: HAMPSHIRE RALPH
IPC: B42F19/00
Filed: 1916-10-26
Abstract: 107,508. Hampshire, R. Oct. 26, 1916. Covers; cards.-In a card index, doubled folders a are provided adapted to be dropped over the index cards. The folders are preferably of a colour different from that of the cards, and may carry an attached band whereby papers may be temporarily secured. A scale g and a movable index device h may be provided.
Patent GB-144324-A (GB)
Title: Improvements in means for controlling and stabilizing flying machines
IPC: B64C3/52
Filed: 1920-06-05
Abstract: 144,324. Daimler-Motoren-Ges. Deo. 10, 1918, [Convention date]. Steering and balancing.-Warping of the wings of flying-machines is effected by adjusting the struts connecting the wings to the body. In the form shown, the struts f , g supporting the outer parts of the wings c, d are connected to a lever i arranged to be rocked about an axis h by means of a hand-lever k. This interconnexion between the wings provides also automatic balancing. The inner struts b are fixed.
Patent GB-1006532-A (GB)
Title: Improvements in or relating to devices for detecting a luminous flux
IPC: F23N5/08
Filed: 1964-04-14
Abstract: 1,006,532. Photo-electric control systems. HONEYWELL Inc. April 14,1964 [April 18, 1963], No. 15301/64. Heading G1A. A photo-electric device for detecting a luminous flux, suitable for incorporation in a burner monitoring and control circuit includes an element 8, such as a photo-resistor, whose impedance is lowered when exposed to the luminous flux. The element 8 is connected in parallel with a relay 2 and rectifier 4 connected in series, and the parallel circuit is fed with A.C. from the secondary 1 of an input transformer in series with a second relay 6 provided with means, such as capacitor 7, to render the relay 6 responsive only to rectified current. Resistors 5 and 9 are included as shown and a capacitor 3 connected across relay 2. In operation when there is no luminous flux and the resistance of element 8 is high both relays are energized but a drop in resistance of element 8 causes the de-energization of relay 6. Figure 2 shows, in simplified form, a burner control arrangement explained in detail in connection with Fig. 3 (not shown). In this arrangement relay 14 controlling the burner fuel supply is fed through control thermostat contacts 10, contacts 2 of relay 2, contacts 11 controlled by a bimetallic strip, contacts 6d of relay 6 and 14e of relay 14 in parallel and a heater 12 associated with strip 13. In addition contacts 6e of relay 6 short-circuit a part of the winding of relay 14. When contacts 10 close the circuit is completed and relay 14 energized to control the fuel supply and ignition device. Contacts 6e being closed a considerable current flows through heater 12 which heats strip 13 fairly quickly. If ignition takes place and a flame is produced relay contacts 6d and 6e open (and the ignition device is switched off) but the circuit remains complete through contacts 14e. However with the full winding of relay in circuit the current flow does not cause heater 12 to raise strip 13 to the temperature at which it would open contacts 11 and normal operation continues as long as is required. If the ignition device does not produce a flame or the flame subsequently fails the contacts of relay 6 close to cause strip 13 to open the circuit at contacts 11; if required an alarm circuit can be completed at the same time. Relay 2 releases if the detector is short circuited.
Patent GB-1501374-A (GB)
Title: Watering plants in pots and other containers
IPC: A01G27/04
Filed: 1975-04-07
Abstract: 1501374 Watering plants B HOBSON 7 April 1975 [5 April 1974] 15312/74 Heading A1E Plants in containers are watered by standing them on capillary matting 11 having an edge dipping into a trough 13 in which water is maintained at a constant level by a control valve 14a.
Patent GB-553677-A (GB)
Title: Improvements in or relating to microphones
IPC: H04R1/14
Filed: 1941-11-28
Abstract: 553,677. Microphones. STANDARD TELEPHONES & CABLES, Ltd., and ROBERTON, J. S. P. Nov. 28, 1941, No. 15342. [Class 40 (iv)] A contact microphone, one form of which is shown in Fig. 1 with the cover removed and in Fig. 2 largely disassembled, comprises a light plate 10 of non-magnetic material, an armature 13 fixed to it, a magnet system supported from the armature by stiff springs 17, and a cover 26 totally enclosing the magnet system and secured so that vibrations of audible frequency are substantially untransferred to the remainder of the microphone. As shown, the plate 10 is moulded from a synthetic resin or thermoplastic material, and is shaped on the lower face to contact with the throat of the user and on the upper face has a rectangular depression 12 in which a plate 13 forming the armature is secured by two screws, and preferably also by adhesive which completely fills up any interspaces. The magnet system, comprising a permanent magnet 21 clamped between T-shaped pole-pieces 22 carrying the windings, is supported by a three-point suspension formed by three flat springs 17 secured to it and held between the heads of screws 19 which pass into the plate 13 and helical springs 18 which surround them. A light cover 26, of moulded synthetic resin for example, is fixed by two selftapping screws 33 to upstanding parts 27 on the plate 10. The screws 33 are parallel to the armature 13, and form a flexible mounting for the cover, the movements of which are clamped by a lining of soft material such as felt or chamois leather which closes the gap between the cover and the plate 10. Alternatively, the cover may be similarly attached to the magnet. The suspension system of the magnet allows it, in addition to vibrating in a direction perpendicular to the armature, to rock about axes parallel to it but well above the plane of the air gap, and the resonant frequencies of these modes of vibration are adjusted to enhance the response in the upper part of the frequency ranges, the main resonance occurring at about the centre. Extraneous noises which are largely picked up by the cover are not communicated by it to the body of the microphone, since its mass is virtually isolated from the rest of the system by the flexible coupling. The Specification contains a mathematical discussion of the effect of the various factors affecting the operation of the microphone. Two of the microphones are illustrated mounted on a flexible neck band which holds them one on each side of the larynx.