baber/WOPTO huggingface dataset:
Patent GB-392546-A (GB)
Title: Improvements in or relating to electric motor starting and the like gear
IPC: H02P1/04
Filed: 1931-10-07
Abstract: 392,546. Actuating controllers; thermal switches. BROOKHIRST SWITCHGEAR, Ltd., HIRST, J. A., Northgate Works, and LANCELEY, C., 12, Lime Grove, Hoole, both in Cheshire. Oct. 7, 1931, Nos. 27829 and 27830. [Classes 38 (iii) and 38 (v).] The heater element s<1> of a thermally operated control switch s is energized when starting gear is moved to its starting position, and the control switch is included in the energizing circuit of an electromagnetically operated main switch c so that if the starting position is occupied for more than a certain time, the motor is disconnected from the line. The invention is shown in the Figure applied to resistance starting gear such as described in Specification 166,084, [Class 38 (iii), Electric motor control systems &c.]. When a control drum D is moved to its first starting position the coil c<1> of the main switch c is energized through a circuit including contacts d<1>, d2, closed only when the drum is in the " off " or first starting positions, and the motor is connected with resistance in its rotor circuit. One of the sets of rotor resistance includes the coil s<1> so that unless the starting operation is completed, i.e. the resistance removed, within a certain time, the switch s opens, de-energizes the coil c<1>, and disconnects the motor. An auxiliary switch c<2> on the switch c, closes when the switch c is closed to short-circuit the contacts. dl,'d2. A switch H is provided for " inching " when the drum D is in its " off " position. The invention is also described in connection with auto-transformer and star delta starters such as described in Specification 376,809, and in one arrangement of star-delta starting the coil of the thermal switch is connected across two phases when the star connections are first made, and is not disconnected until the delta connections 'are made. In another star-delta arrangement the coil of the thermal switch is in one of the star connections, while in the auto-transformer arrangement the coil is in the tapping connection. The invention is also applicable to solenoid operated starters. The thermal switch comprises a magnetic bimetallic switch arm which, under the action of a permanent magnet and a heating coil, opens and closes the circuit with a quick action. The switch arm may be adjustably flexed in its closed position.
Patent GB-1109490-A (GB)
Title: A device for sensing the presence of a liquid or vapour in the atmosphere
IPC: G01N27/04
Filed: 1966-06-22
Abstract: 1,109,490. Moisture-sensitive resistors. AUTEL S. r. 1. June 22, 1966 [Nov. 8, 1965], No. 27840/66. Heading G1N. A transducer sensitive to deposited moisture comprises a parallel pair winding of enamelled wire, from which the enamel is removed on the outer surface leaving the conductors separated by short distances in which moisture is deposited to produce contact between them. The winding may be formed with round or square conductors, or comprise two interleaved comb-shaped conductors. One conductor or a separate winding may be used, as a local heater to adjust the threshold point. As described, one winding is connected to a D. C. source, and a voltage appearing on the other winding when moisture is deposited, may be used to operate a fan or windshield wiper.
Patent GB-248051-A (GB)
Title: Improvements in aircraft framework
IPC: B64C3/00
Filed: 1924-11-21
Abstract: 248,051. Larrard, J. H. Nov. 21, 1924. Framework; planes, construction of.-An aerofoil rib or other framework structure is composed of detachable booms and web members'which are braced together when in position, by tensioning one or more flexible wires, cables. or strips, which extend continuously and diagonally between the booms. In the construction shown in Figs. 1 and 2, the booms 1 and web members 2 are of channel section. The members 2, which are sufficientty narrow to enter the channel of the booms, are formed at their ends with notches 5 adapted to fit on rivets 3 furnished at intervals along the edges of the booms and inside the channel. Flexible wires 6 are threaded along the channels of the web mmbers 2, passed over the rivets 3, and tensioned by turnbuckle-s 7 to brace the whole and form a rigid structure. According to the modification shown in Fig. 5, the web members 2 are arranged vertically end two diagonal tensioning wires 6 are used crossing one another in the bays. The rivets are surrounded by sleeves 4, and both the rivets and sleeves are provided with diametrical holes 8 through which the tensioning wires are passed. The rivets have square heads so that they may be turned to adjust the tension of the wires 6, and they may be prevented from unwinding by burring over their ends, if desired, into key slots 9. Instead of using rivets the booms may be formed with turned-in tongues or pressed out projections. The wire, or other device, when tensioned, may be caused to operate a detent which locks the rib to a spar, such as 10, Fig. 1.
Patent GB-959808-A (GB)
Title: Improvements in collapsible tubes
Inventor: SELLERS BRIAN
IPC: B65D35/38
Filed: 1961-08-01
Abstract: 959,808. Applying medicaments. FLEXILE METAL CO. Ltd. July 11, 1962 [Aug. 1, 1961], No. 27932/61. Heading A5R. [Also in Division B8] A collapsible tube for applying ointment has an integral neck 2 grooved at 3 and a nozzle 5 moulded from polyethylene. Ribs 6, 7. on the nozzle fit the groove 3 and a sealing surface 4 on the neck respectively. A cap 10 is knurled at 11. The tube is extruded from tin or aluminium.
Patent GB-630315-A (GB)
Title: Improvements in or relating to radio antenna systems
IPC: G01S1/02
Filed: 1946-09-18
Abstract: 630,315. Directive radio systems. SPERRY GYROSCOPE CO., Inc. Sept. 18, 1946, No. 27982. Convention date, Sept. 18, 1945. [Class 40 (vii)] A radio aerial, for producing two overlapping radiation patterns in a glide-path beacon system, comprises a half-parabolic cheese reflector fed from two waveguide orifices, one actuated at, or close to, the focal line of the reflector and the other situated at a position so displaced therefrom as to radiate an upwardly-directed beam of energy. The reflector 11, which is constructed to be tiltable about a horizontal axis, comprises a parabolic cylinder bounded by a flat conducting wall 16 in the principal-axis plane and having an aperture in the latus rectum plane. A source 13 supplies ultra-high-frequency electromagnetic energy to the modulator 14, whence it is fed to the aerial by waveguides 18 and 19 which may be terminated by waveguide horns as shown. The modulator is so positioned that the waveguides may be kept short, whereby resonance effects, tending to reduce the band-width of the system, are kept small. The waveguide 18 directs energy into the reflector from a point on the focal line of the reflector and thus energy ,therefrom, being of uniform phase over the aperture of the reflector, is radiated in the form of a planar beam. The energy from the waveguide 19 is directed into 'the reflector from a point on the latus rectum plane below the focal line. There is thus a progressive advancing of phase along the aperture from top to bottom, and the energy from waveguide 19 is accordingly radiated in the form of an upwardlydirected, hollow conical beam. The two beams, which are differently modulated or keyed by modulations introduced at 14, overlap to define a glide-path surface which may be used even at wide azimuthal angles with respect to the forward axis of the system. The aperture of the reflector may be flared as shown in plan in Fig. 3. The transverse dimension b is made less than a half-wavelength to prevent the existence of undesired modes. The guides 18 and 19 are consequently tapered as they approach the aperture so that the horns attached thereto may be accommodated within the reflector. The upper conical beam is preferably given an asymmetrical form (which may approximate to the " cosecant-squared " form) in the vertical plane, so that false glide-paths produced by intersections of the upper beam with side-lobes of the lower beam are prevented. Such asymmetry is produced by the off-setting of the feed point from the focus but it may be increased by distorting the horn termination or as shown in Fig. 6 by having two horns terminating the guide 19. To protect the aerial against extremes of temperature and humidity, a dielectric cover may be fitted over the aperture. The aerial may then be pressurized or thermal control may be effected by passing heated aircurrents therethrough.
Patent GB-745481-A (GB)
Title: Improvements in or relating to a thermostatic valve
Inventor: DRAPEAU HAROLD BARTON
IPC: G05D23/13
Filed: 1953-10-12
Abstract: 745,481. Temperature-responsive actuating- elements. DOLE VALVE CO. Oct. 12, 1953, No. 27984/53. Class 64(2). [Also in Group XXIX] A thermally operated by-pass valve assembly for pressurized cooling systems for internal combustion engines comprises a valve casing with a port 29 in end wall 10 controlled by a butterfly valve element 11 connected to an extensible temperature-responsive element 41 so as to open the port upon a predetermined rise of temperature of the coolant in the system and a by-pass port 65 in an annular wall 12 of the casing controlled by a frusto-conical by-pass valve element 14 mounted on a piston 40 extending from a cylinder 45 of the element 41 so as to follow the member 40 upon extension thereof so that the by-pass element 14 is closed as valve element 11 is opened. The thermal element 41 comprises a casing containing a preformed body of wax or high molecular weight alkylene substances intimately mixed with finely divided conducting material. The mixture expands and operates the element 41 on fusion taking place. The butterfly valve 11 has a lug or ear 37 connected by a pivot pin 43 to a yoke 39 sprung over the grooved upper end of the piston 40. The ear 37 has a slot to accommodate the hooked end 60 of a spiral spring 51 tending to close the valve element. The base of the spring 51 is held within a saddle 46 an upwardly domed central part 54 of which has an aperture in which the base 56 of the thermal element 41 is mounted, bearing-ribs 57 being formed at opposite sides of the aperture to allow a rocking movement to the element 41. The saddle has upwardly inclined portions 49 ending in tabs 62 which are secured as by soldering to inwardly directed recesses 63 formed in the wall 12. The valve element 14 has a bridge 66 V- shaped so that an elongated aperture 71 in an enlarged central portion 67 is offset from the axis of the valve and fits loosely over the piston 40. The central portion 67 of the bridge is constantly pressed against a dished spacer member 74 by a spring 70 abutting a ring 59 on the thermal element 41. The spacer 74 is urged against the base of the yoke 39 in the closed position of the valve element 11 but as the piston 40 rises with increase of temperature the valve element 14 closes the ports 65 and the valve element 11 subsequently opens fully as the piston 40 extends loosely through the spacer 74.
Patent GB-519590-A (GB)
Title: Improvements in or relating to electric tumbler switches
IPC: H01H23/16
Filed: 1938-09-26
Abstract: 519,590. Tumbler switches. GENERAL ELECTRIC CO., Ltd., and ASH, A. G. Sept. 26, 1938, No. 27993. [Class 38 (v)] Operation of the dolly 6 of a tumbler switch causes a shoulder 20 on the contact member 17 to move along an inclined surface 13 thereby helping to carry the spring 18 connecting the member 17 to the pivot 15 of the dolly, over the the dead-centre. Tie member 17 is pivoted to the dolly at 16 and carries a roller contact 4 adapted to engage fixed contacts 2 at its ends and so bridge them. The spring 18 is connected to the roller 4 by means of an intermediate insulating member 19.
Patent GB-464044-A (GB)
Title: Improvements in the manufacture of spring seating surfaces, squabs, mattresses and the like
IPC: A47C7/35
Filed: 1935-10-11
Abstract: 464,044. Spring upholstery. MARSHALL, J. E. L. Oct. 11, 1935, No. 28038. [Class 52 (iv)] Parallel pockets for the reception of upholstery springs are formed by stitching two sheets of fabric A, B along parallel lines, the fabric of one sheet being left slack between the lines of stitching. Padding E may be secured between the upper sheet and a covering sheet F before the springs are inserted and the assembly is shaped by insertion in a cover.
Patent GB-987329-A (GB)
Title: Modified polymers of acrylamide and its homologues and their production
IPC: C08F20/56
Filed: 1963-07-16
Abstract: Modified polymers are made by polymerizing acrylamide or a homologue thereof in the presence of a polyalkylene imine or a polyalkylene polyamine or an alkylation product thereof in an aqueous medium at a pH between about 2 and 5.  Polymerization is carried out with a persulphate/pyrosulphite redox catalyst.  The examples describe the polymerization of acrylamide in the presence of polyethyleneimine and a polyethylenimine in which 70% of the N atoms have been methylated.
Patent GB-696299-A (GB)
Title: Improvements in thermal overload devices for motor starting switches
Inventor: BESAG ERNST
IPC: H01H71/74
Filed: 1950-11-17
Abstract: 696,299. Thermal switches; electrically-released switches. CRABTREE & CO., Ltd., J. A. Sept. 27, 1951 [Nov. 17, 1950], No. 28117/50. Class 38(v) The overload release devices of a polyphase contactor switch substantially as disclosed in Specification 633,393 comprise a part-cylindrical bimetal k having an extended leg k<SP>1</SP> engaging a trip bar l and surrounding a heater r, the other end of the bimetal being riveted at k<SP>2</SP> to an L-shaped bracket n. The bracket n is apertured to receive a boss o on the base of the insulating overload box dwhereby adjustment of the leg k<SP>1</SP> in relation to the trip bar l may be performed by rotating the bracket n on the boss o and clamping it by a screw q passing through an arcuate slot p in the box base and engaging a tapped hole in the bracket n. The trip mechanism i operated by the bar l and "stop" button 18 is as disclosed in Specification 674,084. The heater r may comprise a coil brazed at one end r<SP>1</SP> to a connector strip s<SP>2</SP> and at its lower end to a stem s, the upper end of a stem s being bent forwardly to form a connector strip s<SP>1</SP> and the lower end being received in a recess o<SP>1</SP> in the boss o. The strips s<SP>1</SP>, s<SP>2</SP>, are riveted at t<SP>1</SP> to an insulating plate t which covers a circular opening d<SP>2</SP> in the box cover d<SP>1</SP>, and their forward ends are downturned and bifurcated at s<SP>3</SP> and secured by terminal screws u. To change a heater r the screws u are loosened and the plate t and heater are removable as a unit. A strap w connects one terminal u of each pair to a main terminal x, and a strap y the other terminal u to a main contactor switch contact e<SP>1</SP>. For small currents the heater r is composed of fine wire wound on a tubular ceramic former located on the stem s. For heavy currents the heater comprises a partcylindrical strip Figs. 6, 7 (not shown). The "start" mechanism j housed in an end compartment g in the box d comprises four vertical hexagonal pillars 8 having contacts 8<SP>1</SP> pairs of which are respectively engaged by contact blades 9, 9a, freely mounted on a bar 11 operable by a "start" button 12. The bar 11 also extends through arms of a cradle 13 slidable on the base of the box d and extends freely through a fixed plate 14. A washer 15 is secured to the bar 11 so that a compression spring 16 abutting the plate 14 and the contact blade 9 urges the parts to the "off" position, Fig. 3. Pressing the button 12 moves the blades 9, 9a, with a rolling motion to the chainline position in which the contactor operating coil circuit is completed so that the contactor closes, another circuit, e.g., the coil circuit of another contactor, being broken. An arm 11a on the bar 11 is engaged by a part movable with the contactor armature to hold the contacts 9, 9a, closed, Fig. 1 (not shown).
Patent GB-731794-A (GB)
Title: Improved dust collector
Inventor: TUSA JOHN
IPC: B01D45/14
Filed: 1950-11-17
Abstract: 731,794. Filtering air. BRITISH BATA SHOE CO., Ltd. March 12, 1952 [Nov. 17, 1950], No. 28140/50. Class 8 (2). Apparatus for separating dust from air comprises a vertical casing divided e.g., by partitions 8, 9 into upper, intermediate and lower compartments 3, 4, 5 a fan 12 located centrally within the compartment 3 drawing dust-laden air up a central duct 13 and delivering it from the compartment 3 down one or more open ended filter sleeves 15 located in the compartment 4, the dust being retained on the inside of the sleeve or sleeves 15 and subsequently falling into the compartment 5 whilst the cleaned air traverses the filter walls to the compartment 4 for subsequent discharge to atmosphere. The partition 9 to which the lower ends of the sleeves 15 are secured is resiliently mounted on an annular ring 10 and is guided by telescoping tubes 19, 20 during either intermittent or continuous filter shaking effected by a cam 23 abutting a collar 24 on a shaker rod 25.
Patent GB-1032014-A (GB)
Title: Loom dobby
IPC: D03C1/06
Filed: 1963-07-16
Abstract: A double lift dobby has knives 14, 141 continuously moved by cam operated parallel links 9, 10; 91, 101 and has feeler levers 34 acted upon by a continuously moving pattern chain 32.  The hooks 20 have rollers 43 bearing on the knives 14, 141 are tensioned by springs 22 and guided by strips 45, 46.  The feeler levers 34 are spring loaded and have curved cam surfaces to keep the hooks raised during the continuous movement of the pattern chain 32.
Patent GB-902052-A (GB)
Title: Tape-dispensing device
IPC: B65H35/00
Filed: 1960-08-15
Abstract: 902,052. Tape dispensers. TISSELA A.G. Aug. 15, 1960 [Aug. 19, 1959], No. 28167/60. Class 18. A spool carrier 3, pivotable on a horizontal spindle 2a, carries a tape spool 5, 6 on an elliptical spindle 4, the spool having a driving means, such as a motor 11 and roller 12, for the recovery of tape; the spool carrier 3 is provided with a tape support 3c which, together with a spring controlled rocker arm 9, forms a brake which prevents winding of the tape 7 unless it is released as shown in Fig. 2, by placing the free end of the loop 7 between the handle stop 3f and rocker 9 which rotates the rocker thereby separating the brake at 9a-3d. During unwinding the flanges 6 of the spool rest on the lower part of the rim 36 thus giving a light braking effect. To re-wind the tape the handle 3e is pushed to lower the carrier whereby roller 12 contacts the spool flanges 6 to lift the spool clear of the rim 36 so that the spool runs on the downward elliptical face of the spindle 4; simultaneously, depression of the switch 13 starts the motor 12 and re-winds the tape which will remain clamped as in Fig. 2, but without any slack.
Patent GB-155435-A (GB)
Title: Improvements in or in connection with can-making machines
IPC: B21D51/26
Filed: 1919-11-13
Abstract: 155,435. Abbot, E. E., and Guinness, A. H. Nov. 13, 1919. Coating-machines.-In can-making machines of the kind wherein the body blanks with formed hooks are fed to a horn upon which the hooks are interlocked to form the longitudinal seam, glue or dope is applied to the hook at one end of the blank 4 by means of a bevelled disk 2 which contacts with a disk 1 dipping into a trough 3. Either the disk 1 may be rotated by a belt or the disk 2 may be rotated by contact with the blank 4; in either case the second disk is rotated positively or frictionally from the first disk.
Patent GB-783286-A (GB)
Title: Improvements in the production of benzene carboxylic acids
IPC: C07C51/29
Filed: 1954-09-30
Abstract: Nitro-, halo- or hydroxy-substituted benzene carboxylic acids are made by treating a mixture obtained by the preliminary oxidation with oxygen of the corresponding benzene compounds having at least one alkyl group and/or oxygencontaining aliphatic side-chain oxidizable to a carboxylic group, with an aqueous alkaline solution of a hypochlorite in the presence of an emulsifying agent.  Mixtures obtained by the preliminary oxidation of nitro-, halo- or hydroxy-benzene compounds derived from xylenes, ethylbenzenes, diethylbenzenes, triethylbenzenes, phenyl ethyl alcohols, phenyl acetaldehydes and phenyl methyl ketones are mentioned.  The process is effected by emulsifying the mixture in an aqueous alkaline medium and then leading chlorine in with vigorous stirring or adding aqueous hypochlorite solution. The emulsion may be agitated by acoustic irradiation.  With solid mixtures, solvents stable to chlorine such as benezene are used. Emulsifying agents specified are sulphonates of long-chain paraffins or alkylated naphthalenes.  In examples: (1) a mixture obtained by the air oxidation of 3:5-dichloro-1-ethyl benzene is emulsified with aqueous caustic soda and a paraffin sulphonate and treated with sodium hypochlorite to give 3:5-dichlorobenzoic acid; similarly (2) 4-chloro-benzoic acid; and (3) p-nitro-benzoic acid are made from 4-chloro-1-ethyl benzene and p-nitrotoluene respectively; and (3) the corresponding hydroxybenzoic acids are made from cresols. The Provisional Specification also relates to a process as described above wherein the preliminary oxidation of the benzene compound with oxygen is omitted, the compound being oxidized directly with hypochlorite.  Specification 770,521 is referred to.
Patent GB-1147426-A (GB)
Title: Improvements relating to automatic telecommunication switching systems
Inventor: WARMAN BLOOMFIELD JAMES
IPC: H04Q3/54
Filed: 1966-06-23
Abstract: 1,147,426. Automatic exchange systems. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 9 June, 1967 [23 June, 1966], No. 28196/66. Heading H4K. In a scanning arrangement for detecting a circuit in a distinctive condition, e.g. a calling line circuit, and recording its identity, two scanners are provided and the stand-by scanner is rendered operative by the identity signals to perform a check on the circuit found by the working scanner and to give a fault signal if the identity is not confirmed. The scanners normally exchange their working and stand-by roles at the end of each scanning cycle, but the stand-by scanner is able to time out the working scanner if no end-of-scan signal is forthcoming, and a fault signal is given if the same scanner is timed out in two successive cycles. The arrangement described is based on that of Specification 946,840 in which scanning stops when a calling line is found and continues after connection is made to a register, a fault condition being set up if this does not occur within a certain time. Calling and " park " gates of pulse-plus-bias form are associated with each line circuit in order to detect a PG or permanent calling condition, a persistence check being performed when a marking is found on a park gate.
Patent GB-677267-A (GB)
Title: Improvements in speed governors
IPC: F02D1/02
Filed: 1949-11-04
Abstract: 677,267. Speed governors; gas turbines. HOBSON, Ltd., H. M., and TYLER, S. R. Oct. 11, 1950 [Nov. 4, 1949], No. 28279/49. Classes 57 and 110(iii) [Also in Group, XXIX] An override governor for controlling the fuel supply to an internal combustion engine comprises a rotary member 27 driven by the engine, a rotary inertia member 39 driven through a resilient connection 41 by the rotary member, a valve 34 carried by one of the members and normally held on a seat 40 on the other member but adapted to yield upon acceleration of the rotary member, speed responsive means e.g. bob-weights 35, 36, applying to the inertia member 39 a force which increases with the engine speed andl which tends to open the valve, and means responsive to the flow of liquid past the valve for reducing the flow of fuel to the engine. The governor controls the delivery of a swash plate pump through a fluid-pressure servomotor (see Group XXIX) and is driven by the turbine B of a gas turbine, Fig. 4, driving an air-screw D. A separate turbine A drives the. turbo-compressor C and also the fuel pump and its speed also controls the pump delivery through a fluid pressure servomotor Specifications 577,016, [Group XXIX], and 677,249 are referred to.