baber/WOPTO huggingface dataset:
Patent GB-1385018-A (GB)
Title: Operating circuits for electric discharge lamps
IPC: H05B41/232
Filed: 1971-10-18
Abstract: 1385018 Supply circuits for discharge lamps GENERAL ELECTRIC CO Ltd 18 Jan 1973 [18 Oct 1971] 48376/71 Heading H2H [Also in Division G3]  A supply circuit for a discharge lamp 10 comprises a ballast in the form of a triac 1 via which current is fed to the lamp and a control circuit 15 which causes conduction of the triac for a period in each half cycle of the supply which depends on the lamp voltage or the lamp current during preceding conducting periods of the triac. An inductance 22 coupled to an inductance 2 provides a voltage across a resistor 25 which is representative of the average value of the current supplied to the lamp. A transformer 34 connected across the lamp terminals supplies a voltage across a resistor 38 which is representative of the average value of the lamp voltage. When an A.C. supply is initially connected to terminals 4, 5 the voltage across the lamp and the current through the lamp are zero so that transistors 40 and 29 are conductive. After a few half cycles a capacitor 49 becomes charged sufficiently to fire a unijunction transistor 17 thereby triggering the triac 1. High voltages produced by high frequency resonant inductance-capacitance combinations 2, 3 and 11, 12 enable the lamp to be ignited. 'The small voltage across the resistor 38 on ignition of the lamp increases the anode potential of a diode 33 and enables the capacitor 49 to fire the transistor 17 in each half cycle. The low voltage across the lamp however keeps the collector potential of the transistor 40 and therefore the anode potential of the diode 33 low so that the triac only conducts for a small fraction of each half cycle. As the lamp runs up to full power the conduction of the transistor 40 is reduced due to the increasing lamp voltage across the resistor 38 and the anode potential of the diode 33 becomes determined by the transistor 29. Thus if the lamp current increases, the voltage across the resistor 25 increases and the emitter current of the transistor 29 decreases thereby reducing the anode potential of the diode 33. The triao therefore conducts later in each half cycle to reduce the lamp current.
Patent GB-1337947-A (GB)
Title: Bundle tying machine
IPC: B65B65/02
Filed: 1972-10-20
Abstract: 1337947 Bundle-tying machine B H BUNN CO 20 Oct 1972 [16 Feb 1972] 48465/72 Heading B8C A bundle tying machine having a rotatable twine arm 11 and a knotting mechanism 16 comprises a drive shaft 17 for driving the knotting mechanism 16, a constant mesh gear means 25, 26 between the drive shaft 17 and the twine arm 11 to drive the twine arm from the drive shaft simultaneously with the knotting mechanism 16, the constant mesh gear means 25, 26 providing a variable speed drive to the twine arm 11 while the knotting mechanism 16 is driven at a constant speed. As shown, and which the knotting mechanism is of a known form and in which the twine arm 11 is rotated around an article 14 by a chain and sprocket drive 24 from the gear 26 the gear means 25, 26 comprises constant mesh elliptied gears, the gear 25 of which is driven at constant speed by a motor 18 through a clutch 21, pulley 19 and gearing 22, 23, such that in use the gear 26 rotates at a speed which gradually increases and then slowly decreases for each revolution, the knot tying operation being effected during the latter part of the revolution. USA Specifications 3,540,765 and 1,994,453 are referred to.
Patent GB-1361245-A (GB)
Title: Finstabilised projectiles
IPC: F42B30/12
Filed: 1971-10-20
Abstract: 1361245 Projectiles TAMPELLA AB OY 20 Oct 1971 [21 Oct 1970] 48676/71 Heading F3A A fin stabilized projectile for launching from a motor comprises a tubular propellant powder member 10a forming part of a cartridge screwed into the rear end of a perforated tail pipe 2 of the projectile. The member 10a is supported on a sleeve 11 and is ignitable by means of a powder plug 20. The perforations 4 leading to an auxiliary propellant charge 22 are optionally closed by a sleeve 24 of combustible material.
Patent GB-1400035-A (GB)
Title: Improvements in or relating to gas-cushion vehicles
Inventor: FISHLOCK RONALD CHRISTOPHER
IPC: B60V1/16
Filed: 1972-10-23
Abstract: 1400035 Air cushion vehicles HOVERMARINE TRANSPORT Ltd 15 Oct 1973 [23 Oct 1972] 48771/72 Heading B7K An air cushion vehicle, in the embodiment a sidewall craft, has a looped rear skirt 9 which, in the region 20, but not elsewhere, adjacent the surface 2 over which the craft operates, is formed with perforations 25. This enables skirt inflation air to escape into the gap 21 between the skirt and surface 2 to cause turbulence in the out-flowing cushion air thereby reducing vertical oscillations of the lower part of the skirt.
Patent GB-489022-A (GB)
Abstract: 489,022. Current and pressure meters. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 15, 1936, No. 28050. Void. Convention date, Oct. 17, 1935. [Class 37] A moving-coil instrument has a pair of coils mounted on one side of an axis of rotation and at a slight angle to one another, the polepieces being separate rings arranged so that at each position the coils move in magnetic fluxes of different strength. The ring poles may be arranged eccentrically with respect to one another, or they may be arranged in two planes one over the other in which case the coils are eccentric. The ring poles may be concentric, the different flux strengths being obtained by shaping the poles. If the axes of the rings are relatively displaced, the scale law may be altered. In one construction, polepieces e<1>, e<2> are mounted on the poles of a magnet m and the two coils S angularly spaced are carried in a support l.
Patent GB-1105735-A (GB)
Title: Opening device for packages wrapped with shrinkable plastics films
IPC: B65D75/08
Filed: 1966-11-03
Abstract: 1,105,735. Opening packages; wrappers. PROCTER & GAMBLE CO. 3 Nov., 1966 [3 Nov., 1965], No. 49352/66. Headings B8C and B8K. [Also in Division B5] A wrapper 12 or a bag (not shown) of thermo - plastic heat-sealable heat-shrinkable material has a tear tab 30 formed across the seam 20 by means of a slit 24 enabling the seam to be separated from the rest of the wrapper. The slit may be U-shaped, Fig. 1, or arcuate or V-shaped, Figs. 3, 4 (not shown). Preferred wrapper materials are polyethylene, polyvinylchloride, polyvinylidenechloride and biaxially oriented polypropylene. The wrapper may be heat-shrunk around the article to be packaged, and the slit formed by means of a heated element or a knife. The tab may be produced before or after packaging.
Patent GB-1080410-A (GB)
Title: Method and apparatus for resistance butt welding
IPC: B23K11/00
Filed: 1965-11-22
Abstract: 1,080,410. Welding by pressure. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. Nov. 22, 1965 [Nov. 24, 19641, No. 49510/65. Heading B3R. In resistance butt welding the ends of metal members under water the ends are clamped together by a clamping device to form a closed conductive path including the device and the ends and an induction system is inductively coupled to the path to heat the ends and weld them together. Steel pipes 10, 11 to be joined underwater are held abutting by a metal clamp 13 consisting of a pair of slidably engaged elements 14, 15, a shaft 16 on the element 15 fitting slidably in a bore in the element 14 and an electrical mechanical or hydraulic actuator 20 being connected to the free end of the shaft 16 to bring the elements 14, 15 together. The hinged gripping parts 21, 22 of the elements 14, 15 encircle the pipes and surrounding a part of the clamp is a toroidal magnetic core 27 having a multi-turn winding 28 thereon connected to a high voltage supply source 31 located on a strip 32. Current supplied from the source 31 induces a current in the clamp and ends and most of the heating effect is produced at the abutting ends to weld them. An inverted chamber may be placed over the weld area so that steam generated will displace water in the chamber but preferably a non-conducting, e.g. plastic sleeve 34 is provided to fit loosely over the pipe ends to restrict flow of water. A bored non-conductive, e.g. ceramic plug may be provided in the pipe ends and is knocked out after welding or melted out if of suitable matonal. Rods or plates may be similarly welded.
Patent GB-1242494-A (GB)
Title: A method of forming a multi-core power electric cable
IPC: H01B7/22
Filed: 1969-10-10
Abstract: 1,242,494. Cables. FELTEN & GUILLEAUME KABELWERKE A.G. 10 Oct., 1969 [11 Oct., 1968], No. 49788/69. Head ng H1A. In the manufacture of a multicore power cable having a central metal support strand or rope 1, the support strand is first covered with a layer 2 of plastically deformable and relatively soft material and then with an extruded layer 3 of hardenable material having recesses for receiving the insulated cable cores 5, 6. The layer 3 is then hardened without hardening the layer 2 to form a support element 4 and the cores 5, 6 twisted on to the support element 4. The yielding of the inner layer 2 allows the support element 4 to twist with negligible resistance from the support strand 1. The cable is finally provided with an insulating sheath 7. The inner layer 2 may consist of plastics material or of a rubber free from vulcanizing agents and the outer layer 3 of plastics material or vulcanizable rubber. The cable may have four cores instead of three.
Patent GB-1203107-A (GB)
Title: Fast breeder nuclear reactor
IPC: G21C1/02
Filed: 1967-11-02
Abstract: 1,203,107. Reactors. COMBUSTION ENG. Inc. 2 Nov., 1967 [23 Dec., 1966], No. 49845/67. Heading G6C. In a fast breeder reactor, a negative coolant removal coefficient of reactivity is provided by facilitating the leakage of neutrons into the breeding material. The probability of the return of neutrons from the breeding material is reduced and the tendency for the average neutron energy to increase upon coolant voiding is reduced. The fission fuel is distributed in discrete masses uniformly spaced from one another throughout a three dimensional matrix. The fertile material is similarly disposed in discrete masses through the matrix so that each fissile mass has fertile material above, below and at all sides. An increased negative temperature coefficient is produced by the incorporation of a moderator which reduces the average neutron energy and increases the Doppler action. Thorium and U-238 may be used as fertile materials and U233 and Pu-239 as fissionable fuel.
Patent GB-1360585-A (GB)
Title: Functional memories
IPC: H03K19/177
Filed: 1972-10-30
Abstract: 1360585 Data processing INTERNATIONAL BUSINESS MACHINES CORP 30 Oct 1972 [30 Dec 1971] 49923/72 Heading G4A A decoder 36a-36c is supplied with at least two binary inputs I1-I6 and their complements to provide an interrogation signal on a plurality of lines each of which is coupled to a bit line of a multi-state associative memory cell 22a-22c having a plurality of two-state positions 24 which provide a match/no match signal on a common word line 26 whereby a particular logic function can be performed on the inputs I. Each cell 22 could have 16 states and be formed by four two-state circuits, but the number of states in each cell of a row need not be the same. Masking circuits M1-M3 may be provided between the input register 38 and the decoder 36. Fig. 4 (not shown) gives a table of the logical functions which may be performed on two inputs I1, I2 using a 16-state memory cell. The decoders may use threshold logic to provide outputs representing the number of inputs energized or the decode of binary-weighted inputs.
Patent GB-1140900-A (GB)
Title: Toilet hygienic device
IPC: E03D3/02
Filed: 1966-11-10
Abstract: 1,140,900. Disinfecting closets. J. W. EWING and D. F. BEHRENDS. 10 Nov., 1966, No. 50479/66. Heading E1C. A disinfecting device for a toilet bowl comprises a resilient tubular body 15 (Fig. 3) made up of a portion 19 connecting leg portions 16, 18 one extending inside and the other outside the bowl rim, the portion 18 containing the fluid and the portion 16 having a nozzle 17 supplied by a tube 20 from the portion 18, the portion 19 having upper and lower walls 33, 34 to form a cavity which is contracted when the wall 33 is pressed upon by a toilet seat 12, the walls then acting to urge .the portions 16, 18 together, the fluid being elsa discharged from the portion 18 and tube 20 through the .nozzle 17. The cavity tends to be dilated by a spring 36 and the tube 20 is coupled at one end to a structure with a nozzle 17 at one end and a non-return valve 40 at the other (Fig. 4). The nozzle 17 has grooves (Fig. 8) between ribs 47 for air passage and incorporates an air and liquid mixing chamber 51 (Fig. 4).
Patent GB-505876-A (GB)
Abstract: 505,876. Cables. STANDARD TELEPHONES & CABLES, Ltd. July 29, 1938, No. 22635. Convention date, Sept. 1, 1937. [Class 36] [Also in Group XXV] A tape 18 is applied to the core 19 of an electric cable by means of a body 30 having a conical passage 31, a core guide tube 37, guide blocks 32, 33 for forming the tape 18 into U-section and a tape folding member 41. These parts are mounted within the core tube 24 of an extrusion press or in a pedestal provided with a head for serving a retainer wrapping of strands over the folded tape. Preliminary folding means mounted outside the pedestal or extrusion press comprise a trough-shaped tape guide 38 which carries at its flattened outer end a block 39. The core 19 enters a hole in the block by way of a tube 42 while the tape enters a slot 43 and passes under a spring tongue 40. The core then enters the tube 37 while the tape passes under the block 32. The shape of the passage for the tape is such as to fold it in a narrow and progressively deeper U -shaped section. Finally, one edge passes under the wing 49 of the member 41 which shapes the tape so that it encircles the core. A metal sheath is then applied by extrusion or a wrapping of threads by serving.
Patent GB-1156145-A (GB)
Title: Improvements relating to Clothes Airers
Inventor: BELCHER BASIL JOHN SAUNDERS
IPC: D06F57/12
Filed: 1965-11-29
Abstract: 1,156,145. Clothes airers. B. J. S. BELCHER. 29 Nov., 1966 [29 Nov., 1965], No. 50608/65. Heading A4U. [Also in Divisions D1 and E2] In a clothes airer, which is foldable upwards against a wall, the ends of nylon cords 9 are secured to a metal frame 1 by deformable plugs 10 passed through holes 11 in tubular parts of the frame and having a shoulder 13 preventing withdrawal. The cord is knotted at 16 after passing through the plug which has a reduced neck 14 of smaller diameter than the hole, and a flange 15 to cover the hole. In modifications the cord is bonded, e.g. by fusion, in the plug which is an interference fit in the hole, the shoulder being formed by constriction of the plug by the edge of the hole, a single cord, passing back and forth across the frame, is secured to the frame intermediate its ends by threading through apertures or hooks, or opposite end members of the frame have an intermediate hinge.
Patent GB-1360813-A (GB)
Title: Diglycidyl esters of substituted alkane-omega,omega,-dicarboxylic  acids
IPC: C08G59/12
Filed: 1971-06-03
Abstract: 1360813 Diglycidyl esters REICHHOLDALBERT-CHEMIE AG 3 June 1971 [9 June 1970] 50618/73 Divided out of 1360811 Heading C2C The novel compounds which are the diglycidyl esters of iso-octenylsuccinic acid and isononenylsuccinic acid are prepared by the method described in Specification 1,360,811, and may be used as moulding compositions, either by themselves or mixed with other epoxide compounds, together with an epoxy resin curing agent.
Patent GB-1375966-A (GB)
Title: Attachment  for installing an electrical module
IPC: H05K13/04
Filed: 1971-11-02
Abstract: 1375966 Inserting components in circuit boards W M HALSTEAD 2 Nov 1971 50954/71 Heading B3A An attachment (20) for installing an electric module 12 on a printed circuit board the module having two rows of terminal leads 13 to be inserted in apertures in the printed circuit board comprises a module receiving body 21, Fig. 4, and a pair of jaws 24, which move transversely towards and away from the body and have inturned portions which are provided with lead receiving notches (26), Fig. 9 (not shown), to straighten and align the leads prior to insertion in the board. The module is placed on a head 15 or 15a of a tool 10 with its leads 13 engaged in slots 16 and the tool and module are inserted in an attachment 20, with the module 12 located in a U-shaped body 21, which also engages the head 15 outside of the slots 16. The jaws 24 are closed manually against the bias of a leaf spring (31), Fig. 7 (not shown), with the leads 13 located in the notches (26). The jaws are held closed by a clamping screw 27 and spring 30 and the screw also engages the module 12 to clamp it on the head 15, Figure 7. The module leads are then inserted in the circuit board apertures and the tool 10 and attachment 20 removed after slackening the screw 27. The attachment 20 may be used by itself without the tool 10 for inserting the leads in circuit boards.
Patent GB-1512860-A (GB)
Title: Furniture
IPC: A47C11/00
Filed: 1976-12-13
Abstract: 1512860 Furniture joints STAINES METAL PRODUCTS (GROUP) Ltd 13 Dec 1976 [12 Dec 1975] 51010/75 Heading A4H A bench includes a seat formed by wooden planks 3, a backrest formed by a wooden plank 4, and a pair of end frames (1 and 2), Fig.3 (not shown), each end frame comprising an L-shaped metal casting 5 having cylindrical formations 12 and 13 in which are fitted tubular steel legs 6 and 7 respectively, the legs fitting into cylindrical formations 14 and 15 of a metal casting 8. The casting 5 has a T-shaped cross-section, Fig.2 (not shown) and lateral flanges 9, 10, 11 to which the planks 3 and 4 are attached. In other embodiments the bench may have one leg and be fitted to a wall, Figs.7 and 8 (not shown), or may have individual metal feet on each leg, Figs. 9 and 10 (not shown), or may have a U-shaped tubular piece which forms the two legs. The underframe may be used for a table, Figs. 13 and 14 (not shown), or other furniture article. The legs are connected to the castings 5 and 8 either by pins through cylindrical projections of the casting inside the legs, Fig. 4 (not shown), or by individual screws connecting the castings with inserts in the legs, Fig.5 (not shown), or by a tie bar through the castings and the legs Fig.6 (not shown). The castings may be of aluminium or iron with the legs of mild or stainless steel.
Patent GB-1507712-A (GB)
Title: Preparation of alkali-metal-boro-silicate glasses
IPC: C03B5/225
Filed: 1975-07-14
Abstract: 1507712 Making alkali metal borosilicate glass POST OFFICE 14 July 1975 [29 July 1974 9 Dec 1974 24 Jan 1975] 51040/76 51041/76 and 51042/76 Divided out of 1507711 Heading C1M Molten alkali metal borosilicate glass is treated (to render it suitable for use in optical waveguides) by bubbling through the melt a gaseous mixture of carbon dioxide and carbon monoxide. The gaseous mixture preferably includes up to 20% by volume of CO. The melt may be maintained at 800-1400‹C during the treatment, which may be for 30-120 minutes. The gaseous mixture preferably is bubbled through the melt at a rate of 100-500 c.c./min./kg. of batch material. The molten glass may subsequently be fired for up to 40 hours in air or, preferably, dry CO 2  or N 2 . The glass is preferably an alkali metal borosilicate glass comprising a redox buffering oxide as claimed in Specification 1,507,711.
Patent GB-1354220-A (GB)
Title: Apparatus
IPC: B23H1/02
Filed: 1972-11-06
Abstract: 1354220 Electro-erosion CINCINNATI MILACRON Inc 6 Nov 1972 [8 Nov 1971] 51103/72 Heading B3V [Also in Divisions G3 and H2] An electro-erosion apparatus comprises a power switching circuit 22 responsive to a D.C. source 24 and pulses from an oscillator 26 for supplying machining pulses to the machining gap (connected to lines 12 and 14), a first circuit 28, 30 connected to the oscillator 26 for inhibiting the occurrence of each machining pulse for a predetermined period, a second circuit 32 connected between the machining gap and the D.C. source 24 for applying a sensing signal to the gap during the predetermined period and a current detector 34 responsive to the sensing signal for sensing current through the gap during this period. The trailing edge of the pulse from the oscillator 26 actuates a monostable multivibrator 33 which triggers a flip-flop 36 causing transistors 40, 42 and 44 to be switched on, the latter disconnecting the oscillator 26 from the switching circuit 22 through most of the off time and through the leading edge of the on time. The leading edge of the pulse from the oscillator 26 energizes a monostable multivibrator 38 which switches on transistors 48, 50 of a sensing circuit 32 which applies a sensing signal to the gap. If the current through a high resistance 52 of the transistor 50 exceeds a predetermined value defined by Zener diodes 54, 56, transistors 58, 60 are switched on, whereupon the machining pulse energy is controlled, the machining pulses are terminated, the flow rate of the dielectric is altered or the magnitude of the gap is altered. The trailing edge of the pulse from the multivibrator 38 switches off the transistors 48, 50 to terminate the sensing signal and resets the flip-flop 36 to cause the transistors 40, 42, 44 to be switched off and the oscillator 26 to be reconnected to the power switching circuit 22.
Patent GB-511184-A (GB)
Abstract: 511,184. Calculating-apparatus; games scoring apparatus. THORNE, H. Dec. 13, 1937, .No. 34469. [Class 106 (i)] [Also in Group XV] An adding and subtracting device suitable for use as a dart scorer comprises a -casing 1, Figs. 1 and 2, with slots 2 and corresponding windows 3 behind which are arranged slidable straps 4 with an indented edge 6 and bearing numerical data. The strips 4 as' shown are arranged in groups of three and are guided by ribs 9 in grooves 5; each rib 9 is out away to provide an entrant opening 10 for a blade 'spring 8 mounted in a recess 7 in the strip whereby a lower strip may actuate the adjacent strip on reaching the full extent of its displacement. During such displacement an indication "top" is exhibited indicating that the strip must be returned by the operating styles 13 to the upper limit of the slot 2 to expose the resulting numeral. In a modified form the strips may be attached to flexible tapes mounted on rollers at the ends of the casing.
Patent GB-1145869-A (GB)
Title: Improvements in or relating to clutches
Inventor: GATES ALBERT GEORGE RONALD
IPC: F16D43/202
Filed: 1966-11-16
Abstract: 1,145,869. Feeding sheets. GESTETNER Ltd. 3 Nov., 1967 [16 Nov., 1966], No. 51420/66. Heading B6B. [Also in Division F2] Manual raising of a feed-plate for a stack of sheets in a known duplicating machine feed, Fig. 2 (not shown), by means of a knob, until the top sheet abuts an unspecified part of the machine, is obviated and rendered automatic by means of an overload-release positive clutch (see Division F2), incorporated therein, Fig. 3 (not shown). The clutch is manually engaged and automatically disengaged when a predetermined resistance of movement of the stack is exceeded, due to the top of the stack abutting the unspecified machine part. A reciprocating pawl engaging a saw-toothed wheel effects step-bystep raising of the stack to maintain the stack top at the required level during operation of the duplicating machine.
Patent GB-1211701-A (GB)
Title: Improvements in gauges
Inventor: BUCKLEY ALAN EDWARD
IPC: G01B3/30
Filed: 1966-11-17
Abstract: 1,211,701. Handle fixings. BUCKLEY ENG. CO. Ltd. 14 Feb., 1968 [17 Nov., 1966], No. 51505/66. Heading B4K. [Also in Division G1] In a gauge e.g. a plug gauge, the handle 10 is formed with a hexagonal profile which is engaged in a complementary profile socket formed in the plug member to prevent rotation.