baber/WOPTO huggingface dataset:
Patent GB-802006-A (GB)
Title: Improvements in or relating to crystal filters
IPC: H03H9/54
Filed: 1956-07-13
Abstract: 802,006. Filter networks. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. July 13, 1956 [July 18, 1955], No. 21731/56. Class 40 (8). A four terminal band-stop network is characterized in being the electrical equivalent of a lattice filter (Fig. 9), having in each of its four arms a piezo-electric resonator, each of the resonators having substantially the same characteristics and in each of one pair of arms an inductor the value of whose inductance is such as to resonate with the shunt capacity of the across the associated resonator at a frequency below the self-resonant frequency of the resonator. In the reactance diagram of Fig. 10, the solid line shows the reactance variation in the series arms and the dashed line the variation in the lattice arms. The reactance curve of series arms crosses the axis at points #0,  #2, f5, #6, the location of the points #0 and f6 not being of great importance. The point f2 is the anti-resonant frequency of the crystal and may be adjusted by variation in the shunt capacity. A change in this capacity also changes the location of point f5 at which the inductance is in series resonance with the effective capacitive reactance of the crystal circuit. The points #1 and f3 at which the dashed curved crosses the axis are determined respectively by the internal series-resonance frequency of the crystal and the anti-resonance frequency determined in part by the value of the shunt capacitor. The attenuation curve is shown in Fig. 11. By adjusting the shunt capacitances of the crystals the points #2, #3 may be separated and an improvement in the rectangularity of the stop-band achieved. The circuit is realized in the manner shown in Fig. 8, using a ferrite-core hybrid transformer. U.S.A. Specification 2,212,840 is referred to.
Patent GB-498155-A (GB)
Title: Improvements in and relating to clothes wringing machines
IPC: D06F45/18
Filed: 1937-08-06
Abstract: 498,155. Wringers ; machinery guards. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 6, 1937, No. 21733. Convention date, Aug. 6, 1936. [Class 138 (ii)] [Also in Group XXIV] The drive to a wringer is connected up by swinging a control lever 11 forwardly or rearwardly about its pivots 12, 13 so that a clutch 26 is moved into engagement either with a forward or a reverse bevel 23. A lost motion device is provided in the connection between the lever and the clutch whereby the lever may be returned to its normal central position without declutching the drive. A lever 17 is provided with a finger piece 20 arranged within'an aperture 21 in the lever 11 and normally drops by gravity into a recess in a cam 16 so that the cam 16 and lever 11 may be rotated together for releasing the pressure in emergency, the cam bearing on one of the members 10 of a pressure-locking toggle so as to break the latter on rotation of the lever 11 and permit the reaction of the pressure spring 6 to raise the head 7 and release the pressure. When the lever 11 is to be swung for operating the clutch without releasing the pressure the finger piece 20 is operated to raise the lever 17 out of engagement with the cam.
Patent GB-154717-A (GB)
Title: Improved arrangement of electric welding apparatus
IPC: B23K9/20
Filed: 1919-09-04
Abstract: 154,717. Frankling, A. E., Steele, L. J., Martin, H., and McCarthy, A. E. Sept. 4, 1919. Addition to 134,393. Lighting and heating systems.-In a system for electrically welding studs to plates as described in the parent Specification, in order to avoid " pumping " action of the welding-circuit switch in the event of the overload-release circuit-breaker being closed, after being opened by the overload-release, before the main switch is opened, the circuit of the overload-release breaker is controlled by a cutout switch which is held closed by a coil arranged in series with the breaker and controlled by the cut-out switch. The application to the circuit of Fig. 4 of the parent Specification is shown, in which the cut-out switch 53 of the present invention has a hold-on coil 77 in series with the overload breaker 60, the release coil 63 of which is in circuit with the welding-circuit switch 58. 17 is the solenoid which withdraws the stud 40 from the plate 48 against the action of a spring to strike the arc, and 65 is a coil for neutralizing the coil 17 when the stud is to be pressed on the plate to form the weld. The switch 53 is normally held open, as by a weighted arm 75, and, by a contact 68, it connects the coil 77 to the main 45 through conductors 72, 73 and to the main 44 through the breaker 60 and the operating-coil 57 of the welding-current switch 58. Thus, when the welding-current in the coil 63 opens the breaker after a weld is made, since the high antiflash resistance 59 passes only a small current, the coil 77 is de-energized and the main switch 53 opens automatically. The switch 53 may also carry a second contact 69 for energizing the pulloff-coil 17.
Patent GB-868881-A (GB)
Title: Improvements in or relating to semiconductor devices
IPC: H01L23/31
Filed: 1959-06-25
Abstract: 868,881. Semi-conductor devices. WESTING- HOUSE ELECTRIC CORPORATION. June 25, 1959 [July 17, 1958], No. 21811/59. Drawings to Specification. Class 37. A PN junction device is coated in at least the exposed junction area with an elastomeric silicone resin containing lead tetraoxide (Pb 3 O 4 ) and/or mercuric oxide. The metal oxide may be in the proportion of 0.6 to 2 parts by weight to one part of the silicone and should have a particle size in the range of 0.1 to 10 microns. Examples are given of a PNP transistor totally encased in the compound and of the same device covered only in the region of the junctions and of a diode totally covered except where a metal base is soldered to the N-type wafer. Examples of semi-conductor devices to which the invention is applied are a silicon diode prepared by fusing a pellet of aluminium to an N-type silicon wafer, a silicon diode prepared by fusing a doping pellet of 99.5% gold and 5% antimony to P-type silicon, a germanium diode prepared by fusing indium to N-type germanium, and a germanium diode prepared by fusing a leadantimony alloy to P-type germanium. The coating may be formed by mixing metal oxide and elastomeric silicone resin in the form of a paste or gel by stirring at a temperature above the melting point of the resin or by mixing on a paint mill. The coating may then be applied by dipping, brushing or spraying and cured by heating and the device may then be encapsulated. The siloxane elastomer may be prepared by hydrolysing a dialkyl silane or a mixture of a dialkyl and a diphenyl silane, the silanes containing an oxide of two readily hydrolysable groups per silicon atom. Upon hydrolysis oily silicone-type polymers result which may be converted to high-viscosity liquid silicones by treatment with suitable agents or an acyl peroxide.
Patent GB-350301-A (GB)
Title: A combined weed extractor and seed or soil depositor
IPC: A01C7/02
Filed: 1930-07-19
Abstract: 350,301. Hand tools for planting seeds, extracting weeds, and working soil. MAXTED, A. H., 101, Queen's Road, Watford, Hertfordshire. July 19, 1930, No. 21866. [Class 6 (ii).] A combined weed extractor and seed or soil depositor comprises a weed receptacle 1 having a snout end 3 adapted to be pressed into the ground and detach a weed for subsequent passage up the receptacle 1, and a container 2 for seeds, soil, or both, having means such as a cover 9 operated by a spring-urged rod 10 for controlling the delivery of the seeds or soil into the cavity formed by extracting the weed. The weed receptacle 1 is provided internally with a tapered tubular member 5 axially movable and urged down by springs 6 so that its lower end normally abuts against a flange 4 near the snout end 3. By moving upwards each time a clot of earth enters the receptacle 1, and subsequently moving down under the action of the springs, the member 5 facilitates the entry of weed-containing earth into, and also its passage up, the receptacle 1. The springs may be protected by housings 8, 13, and the springs 6 mounted on rods 7. A step 16 and handles may be provided for facilitating operation, and the container 2 may be closed by a cover 14.
Patent GB-831937-A (GB)
Title: Improvements in and relating to windscreen wipers
IPC: B60S1/24
Filed: 1958-07-08
Abstract: 831,937. Windscreen wipers. AVOG ELEKTRO-UND FEINMECHANIK G.m.b.H. July 8, 1958 [Aug. 22, 1957; May 21, 1958], No. 21897/58. Class 138(1). A windscreen wiper crank drive is characterised in that the crank pin is mounted on the crank so as to be adjustable longitudinally of the crank to a desired position, to enable the effective length of the crank to be varied. As shown, crank 1 is rotated by a shaft inserted at 2 and has a slot 3 in which is located a flat sided portion 4 of crank pin 5. Guide plate 6 pivoted about the crank pin and disposed between shoulder 7 and crank 1 has an arcuate slot 9 in which lug 10 projects outwardly from crank 1. The length of the crank may be varied by slackening off nut 8 and rotating plate.6 6 by means of end 11 causing the crank pin to move up or down slot 3 after which nut 8 is re-tightened. In an alternative construction arcuate slot 9 can be formed in crank 1 and lug 10 on plate 6. In another alternative construction, Figs. 3 and 4, flat crank 1 is replaced by a U-shaped -piece 22 the motor shaft being engaged in serrated bore 12. Longitudinal slots 13 and 17 fulfil the same function as slot 3 while plate 6 is effectively replaced by a bolt 19.
Patent GB-931604-A (GB)
Title: Improvements in or relating to semi-conductor rectifier assemblies
Filed: 1960-06-22
Abstract: 931,604. Semi-conductors. SIEMENSSCHUCKERTWERKE A.G. June 22, 1960 [Oct. 22, 1959], No. 21899/60. Class 37. A rectifier assembly includes a housing containing a rectifier element to which are electrically connected two lead wires, a portion of each wire within the housing but not in direct contact with the element being in the form of a bend, there being portions of the housing located adjacent each bend and serving to restrain turning of the bend by forces applied to the wire outside the housing. Such an arrangement is of use with miniature rectifier assemblies for use with printed circuits where it is desired to prevent turning moments applied to the external leads from being transmitted to the contact portions of the leads. Fig. 1 shows an assembly including an insulating housing 1 having two cylindrical recesses 2, 3, in each of which are located two selenium rectifier tablets and the flattened eye-form contact portions of two wire leads 5, 7, and 5<SP>1</SP>, 7<SP>1</SP>, respectively. Figs. 2 and 3 show the disposition of the rectifier tablets 4, 6, the contact portions of the leads and a metal dummy tablet 8, in recess 2. Leads 5, 7 comprise double bends 5b, 7b which extend through slots in the housing 1, the walls of the slots restraining the turning of the planes of the bends. Leads 5<SP>1</SP>, 7<SP>1</SP> are similarly shaped and accommodated, the whole assembly forming a rectifier bridge, Fig. 9, in which 9 is a metallic bridge connecting the stacks in the two recesses, 11 is a metal dummy tablet, and 10 is a spring which connects the stacks and maintains contact pressure; spring 10 comprises a guiding extension (not shown) which fits into a slot 17 (Fig. 1) in the housing. Leads 5, 7, 5<SP>1</SP>, 7<SP>1</SP> emerge through apertures, spaced as disclosed in Specification 912,151, in a front plate (not shown) whose sides fit in slots 21 in the housing, and the assembly is closed by a metal plate (not shown) which covers the housing and is bent round the sides thereof. The modification shown in Fig. 10 comprises two recesses 31, 32, each housing a stack of rectifier tablets in series to form an independent half-wave rectifier. Each stack (Figs. 11, 12) comprises four tablets 34, with a contact portion 33a, 35a of leads 33, 35 at either end of the stack. Each lead 33, 35 comprises a bend 33b, 35b which is accommodated in a slot in the housing and is further protected from transmitting external forces to the contact portions by shaped portions 30b of the housing.
Patent GB-588046-A (GB)
Title: Improvements in or relating to locks
IPC: E05C1/16
Filed: 1944-11-08
Abstract: 588,046. Latches. PERL, A. H. F. Nov. 8, 1944, No. 21912. [Class 44] A bolt head 19 is held in its locked position by abutments 7, on a fixed plate 5, co-acting with abutment 8 on a handle 9, until the handle is withdrawn axially along a spindle 1, turned to position abutments 7 on the other sides of abutment 8, when rotation of the handle moves the spindle and withdraws the bolt through links 16, 17. The handle is secured to a slidable sleeve 10 by a grub screw 12. The parts 7, 8, may be pins or pins and claws on the plate 5 and handle 9. Various modified arrangements of the plate 5 and spring 21 are described in the Specification. When used for locking lavatory doors the moving of the handle to and from the locking position may actuate the usual indicator on the outside of the door. Means such as a rack and pinion may be used to project the bolt further into the door post, after locking.
Patent GB-709418-A (GB)
Title: Improvements in apparatus for storing volatile liquids
IPC: B65D90/38
Filed: 1950-09-06
Abstract: 709,418. Regulating liquid levels; dispensing liquid fuel &c. CANTACUZENE, G. S. and CANTACUZENE, C. M. Sept. 6, 1950 [Sept. 15, 1949; Aug. 26. 1950]. No. 21970/50. Classes 116 and 123(1) [Also in Group XXIX] In a tank 2, fitted with vacuum and pressure relief valves 4, for storing petrol or like volatile liquid 5 upon a heavier and immiscible liquid, such as water 7, which is pumped into the tank through a pipe 13 at substantially the same rate as the petrol is withdrawn through a pipe 10 and valve 8, and vice versa, the pressure in the vapour space 6 of the tank is maintained constant, to avoid opening of either of the said valves, by adjusting the level of the water in accordance with said pressure. Preferably the space 6 communicates by a pipe 15 with the upper end of a bell 19 which floats within a cylindrical liquid container 51 and, through a cable 57 attached to a counterfloat 59, controls valves 62, 63 in auxiliary. water inlet and outlet pipes connected to the bottom of the tank 2 through a common main-valve 64. The pipe 10 may extend to the top of the tank 2 and terminate in a wide and shallow funnel 12 capped by a baffle plate 11; in a modification the pipe is pivoted to the side of the tank and has its flared end 12 and baffle 11 supported on floats.
Patent GB-458192-A (GB)
Title: Improvements in pressure or force indicating mechanisms
IPC: G01L7/08
Filed: 1935-08-06
Abstract: 458,192. Measuring forces. ALEXANDER, J. W., Henley, Old Chester Road, Castle Bromwich, Warwickshire, and BALL, E. D., 68, Blenheim Gardens, Wallington, Surrey. Aug. 6, 1935, No. 22097. [Class 106 (ii)] Comprises an elastic metallic ring or a plurality of such rings mounted concentrically, means for supporting the ring or rings at a plurality of positions, means for exerting a pressure on the ring at a plurality of intermediate positions and means for measuring the bending of the ring. The device shown is applied to measure the force exerted by a cupping tool h on a plate g supported on a bush f supported in turn on a pressure ring e. This is provided with a plurality of studs i engaging the metallic ring c at points situated between radial or other projections d by which the ring rests on the support b. The deflection is measured by a dial gauge j. Instead of studs i projections may be provided on both sides of the ring.
Patent GB-779103-A (GB)
Title: Insulation clad electric circuit-breaker of limited breaking power
IPC: H01H9/10
Filed: 1955-08-02
Abstract: 779,103. Two-part couplings; fusible cutouts. NAAMLOOZE VENNOOTSCHAP FABRIEK VAN ELECTRISCHE APPARATEN VOORHEEN F. HAZEMEIJER & CO. Aug. 2,1955 [Aug. 5,1954], No. 22160/55. Class 38 (1). A circuit-breaker comprises a fixed member 2 carrying fixed contacts 13 housed in insulating sleeves 4 and a detachable member consisting of a two-part bridge 19, 27 carrying plunger contacts 29 and housed in a hood 16 which shrouds the engaged contacts in the closed position. The contacts 29 are connected either by a fuse 24 or a link. Member 2 also carries a permanent magnet 6 which engages a member 38 on the bridge part 27 to retain the two members together. To break the circuit a handle 17 on the hood is pulled which transmits motion to the bridge-part 19 through strips 39. Movement of part 19 compresses springs 25 until rods 43 carried by strips 39 engage bridge-part 27 and overcome the attraction of magnet 6 whereupon the bridge-part 27 and contacts 29 are separated from the fixed member 2 with a snap action by springs 25. Fig. 4 shows a modification wherein the magnet is replaced by a spring catch consisting of pairs of parallel pivoted arms 41 drawn together by a spring 44 and carrying rollers 42 which engage a hooked extension 46 on the bridge-part 27. Thus, the rollers 42 retain the bridge-part 27 on withdrawal of the hood 16 until it is released as before by rods 43. Fig. 5 shows a further modification having a spring catch in the form of a pin 52 with notches 63 which are engaged by parallel spring rods in an extension 51 of member 2. The pin is rotatable on bridge-part 27 and carries a sleeve 58 having a slot 60 in its outer end engaged by a twisted guide member 54 carried by bridge-part 19. When the part 19 is withdrawn with the hood 16, the guide 54 rotates pin 57 until the springs leave the notches 63 whereupon part 27 is released, its subsequent movement causing guide 54 to rotate pin 57 back to its original position.
Patent GB-487987-A (GB)
Title: Improvements in or relating to shock absorbers for the suspension systems of automobiles and other vehicles
IPC: B60G15/04
Filed: 1937-08-12
Abstract: 487,987. Shock - absorbers. BEURDELEY, A. A. M. Aug. 12, 1937, Nos. 22221. and 22222. Convention dates, Aug. 13, 1936 and Dec. 30, 1936. [Class 108 (iii)] A shock-absorber includes a hollow cylinder a series of compression springs of rubber or material having similar properties of resilience, the springs being disposed coaxially within the cylinder, a lever, eccentric or equivalent control member and means for transmitting thrust to the member in both directions of its movement. In one form, the vibration damper includes a casing 1 provided with fixing lugs 2, 3 and housing a series of springs 7 of rubber. The springs are held between discs 10, 13, and are adapted to be compressed by movement of an arm 3 connected to a lever 6. The arm 4 bears against the disc 13 and is connected by a tie rod 9 to the disc 10. Abutments 12 and 8 are provided for the discs, the abutment 8 being adjustable. Washers 14 of e.g. aluminium are provided to reduce noise. In a modification, two coaxially arranged sets of springs are arranged on either side of an eccentric operated by the lever. A ring surrounds the eccentric and this may contact rollers on discs through which the springs are compressed. In a further form one of the sets of springs are omitted a tie rod being connected to a partition between two discs which comprise the eccentric. In a modification of this latter form the end of the housing is adapted to constitute an air cushion. In a still further modification the springs are compressed by a cam having a profile constituted by the involute of a circle, an Archimedean spiral, or other form. The cam bear on the springs through ball bearings. The end discs may be provided with an housing for the end of the tie rod.
Patent GB-174959-A (GB)
Title: Improved collapsible wire-runners
IPC: B65H75/20
Filed: 1920-07-26
Abstract: 174,959. Symes, H. A., and Symes, V. G. July 26,1920. Reel-carriages.-Coils of wire &c, are transported on and paid-out from a support which comprises a central rod carrying a small upper and a large lower spider C, A, with arms such as D screwing into the spiders and having a guide-arm F. The whole is readily disconnectible, and, in transport, the arms A<1>, which are turned out to support large ooils can be turned in.
Patent GB-336672-A (GB)
Title: Improvements in or relating to the manufacture of fabric
IPC: D04H13/00
Filed: 1929-07-19
Abstract: 336,672. Wade, H., (Caro Cloth Corporation). July 19, 1929. Tufting-machines; feeding long lengths of fabric.-Fabrics are made by feeding a roll of base fabric forward at a certain rate, applying thereto, at various points and on both sides layers of fibrous material, and securing the fibres to the base fabric by tufting. The base fabric 19 is fed from a roll 20 on to the conveyer 15 of the first tufting machine 12<a>. Three layers of fibrous material 16, 17, 18 are applied to the uppermost surface of the base fabric by suitable rollers and inclines. The treated fabric 19 is then run along the floor to a roller 23 which guides it to the conveyer 24 of the next tufting machine 13, with the opposite face uppermost. Three more layers of fibrous material 25, 26, 27 are secured to this surface by the tufting machine 13 and the fabric is passed to the conveyer 31 of the next tufting machine 14 via rollers 30, where further layers of fibrous material 32, 33, 34, are attached. The fabric is then run over rollers 37, 38, 39 to the dressing and finishing apparatus.
Patent GB-925686-A (GB)
Title: Improvements in and relating to coal-fired installations
Inventor: BENEDEK LASZLO
IPC: F23K3/00
Filed: 1960-06-27
Abstract: 925,686. Fuel feeding; sprinkler stokers. HOTECHNIKAI KUTATO INTEZET. June 27, 1960, No. 22438/60. Class 51 (1). Dust and fines entrained by hot air flowing up a sorting column 3 in counter-current to coal passing to a travelling grate 6 is separated in cyclones 9 and fed to an inclined plane 12 having sprinkler nozzles 14 at its lower end. The gases from the cyclones 9 are returned via a fan 17 to a heat-exchanger. From the lower section 18 of the heat-exchanger air is fed below the travelling grate 6 and through a booster fan 21 to the sprinkler nozzles 14 and to secondary air inlets 15, 16 above the grate. A damper controlled by-pass duct 22 and a damper 24 controlling an inlet to a hopper 4 at the base of the sorting column 3 regulate the hot air flow through the column 3, which is taken from the second section 19 of the heatexchanger. A damper 25 controls the supply of air to the system.