baber/WOPTO huggingface dataset:
Patent GB-312962-A (GB)
Title: Improvements in or relating to electro-acoustic transmission and the like systems
IPC: H04B11/00
Filed: 1928-03-01
Abstract: 312,962. Smith, W. S., and Mc- Lachlan, N. W. March 1, 1928. Subaqueous signals.-Signals such as speech are transmitted in the form of modulation superimposed upon supersonic carrier waves transmitted by a piezo-electric crystal 1. For subaqueous transmission the crystal 1 is caused to oscillate at its natural frequency by a thermionic valve oscillation generator 2, the applied potentials being modulated by speech frequencies derived from a microphone 4 associated through an amplifier 5 with the generator 2, so that supersonic waves modulated at speech frequencies are transmitted through the water by the crystal. Such modulated waves are received by a second crystal, and then rectified and amplified in known manner. For use as a voice or signal retardation device in an arrangement such as described in Specification 308,336, [Class 40 (iv), Telephones &c.], the invention comprises a modulated wave piezo-electric transmitter, a receiver associated therewith, and a length of pressure-transmitting medium such as a tube of water between transmitter and receiver, the length of said medium being such as to give the required delay. Liquids other than water, gases, or solids may be used as the pressure-transmitting media. The fluid in the tube is preferably insulated therefrom by a lining of rubber-like material, and the tube may also be insulated from the transmitter and receiver.
Patent GB-657850-A (GB)
Title: An improvement in the construction of a sinker carrier for straight-bar knitting machines
IPC: D04B11/00
Filed: 1949-04-10
Abstract: 657,850. Knitting-machines. PARTHUM, R. March 10, 1949, No. 6563. Convention date, April 17, 1948. [Class 74 (ii)] The spacing between the upper and lower parts 1, 2 of a sinker carrier for a straightbar knitting-machine is adjusted by means of interposed adjustable supporting members, such as studs 9, which screw into the part 1 and bear against the part 2. Intermediate clamping members each consist of a head 6 in a hole in the part 2, a threaded pin 7 inserted in a smooth hole in the part 1 and provided with an adjusting nut and a metal strip 5 attached to the head 6 and pin 7 and passing between adjacent sinkers.
Patent GB-876777-A (GB)
Title: Improvements in or relating to calendar clocks and watches
IPC: G04C17/00
Filed: 1958-02-28
Abstract: 876,777. Clocks. JAHRESUHREN-FABRIK G.m.b.H. Feb. 28, 1958 [March 4, 1957], No. 6617/58. Class 139 [Also in Group XIX] A calendar clock comprises a number of lightspot magnetic counters for indicating seconds, minutes, hours, dates, months and years, each actuating the next by contacts or pulse generating means according to the date to be indicated. Each counter comprises a stop disc combined with a transparent ring bearing numerals which are lit from behind and observed singly through a window or by projection on to a dial. Known counting, clock and calendar techniques are combined. The stop discs may carry lugs for closing small spring contacts in accordance with the pulses required for the advance of the next counter, the lugs and spring contacts may be replaced by small permanent magnets and magnet coils and in either case allowance is made for the varying length of the month, including leap year. Small holes may replace the lugs and be used in conjunction with a photo-electric diode or transistor disposed opposite the light source. While electro-mechanical advance suffices for indicating seconds and minutes, electronic counting tubes are needed if fractions of seconds are to be indicated. The source of light may be an incandescent lamp or a strip provided with a fluorescent compound. Control of the clock may be effected by transistors or tubes in a multivibrator or oscillator circuit tuned to the desired advancing frequency where fractions of seconds are to be indicated stabilization may be effected through a quartz crystal. Alternatively, pulses may be derived from permanent magnet, magnet coil, light source and photo-electric diode, change of resistance or capacity in conjunction with a balance wheel or pendulum. The clock may be regulated by an adjustable potentiometer. Auxiliary clocks may be controlled from a master through a flip-flop stage. The small current required to operate the calendar clock may be obtained through a mains supply, dry batteries or midget accumulators. Striking mechanism may be incorporated or may be simulated through a sound recording, pick-up and midget loud-speaker.
Patent GB-180746-A (GB)
Title: Improvements in power transmission mechanism for tractors
IPC: B62D11/08
Filed: 1921-02-28
Abstract: 180,746. Campodonico, J. J. Feb. 28, 1921. Axles and axle structures.-The road wheels B or track-driving members of a tractor rotate on extensions 2 of a casing A which encloses the whole of the driving mechanism and is secured to or formed integral with the tractor frame.
Patent GB-1430805-A (GB)
Title: Drums for centrifuges
IPC: B04B7/18
Filed: 1973-04-16
Abstract: 1430805 Centrifugal strainer drum MASOHINENFABRIK BUCKAU R WOLF AG 16 April 1973 [19 April 1972] 06644/74 Divided out of 1430803 Heading BID The otherwise impervious cylindrical drum of a centrifugal strainer comprises a plurality of annular screens 11 recessed flush with the inner surface 1b of the drum, filtrate drainage holes 15, 16 and external reinforcing ribs 18 level with the screens, each rib having a cylindrical section 19, an upwardly tapering section 20 and a lower rounded step 21. Fig. 1 (not shown) depicts the whole drum and its inlet nozzle (6).
Patent GB-122099-A (GB)
Title: Improvements in Cloth Milling or Fulling or like Machines.
Inventor: MOORHOUSE FREDERICK LOUIS
IPC: D06C17/02
Filed: 1918-04-22
Abstract: 122,099. Moorhouse, F. L., Brook, C. W., and Brook, T. A. April 22, 1918. Fulling and milling.-The drafts of fabric, on leaving the squeezing-rollers a, b pass through the trough c and engage a rearwardly-disposed spring-controlled roller or block e having its shaft or bearings slidable in slots f, which have inclined portions f' to cause the roller to rise and allow the fabric to pass beneath it and have depressions f<2> to receive the ends of the roller shaft when it is required to render the roller inoperative. The roller or block may be reciprocated positively by cams. Additional rollers or blocks e may be employed, each being arranged to the rear of an additional trough; these are disposed in step fashion and are provided with cam-operated spring-controlled sliding blocks k. Sets of cams l are provided for giving different travels to the blocks k, and means are provided for putting the required cams into action.
Patent GB-610735-A (GB)
Title: Building construction
IPC: E03C1/01
Filed: 1946-03-05
Abstract: 610,735. Service units for buildings. LANKTON, J. F. March 5, 1946, No. 6874. Convention date, April 9, 1945. [Class 20(i)] A self-contained unit for supplying hot and cold water, heated air electric current and disposing of sewage in a building comprises a metal frame 1, Fig. 6, in which is mounted a cold water supply pipe 5, a hot water supply pipe 6, and hot water heater 2, a soil, pipe 7, an air heater 3. and an electric current distribution panel 4. The pipes and electric wires extend to the sides of the unit where they have couplings ready for fixing to appliances such as sinks, and services such as water. The unit is adapted to have the appliances to be serviced arranged around it in a compact group and as shown in Fig. 5 serves as a partition between a bathroom 20. kitchen 28 and a laundry 38. The cold water pipe 5 has couplings 86 for connection to sinks &c. and also supplies water to the heater 2 from which hot water is supplied by the pipe 6 to couplings adapted to be connected to sinks &c. Drain outlets from the sinks &c. are connected to couplings 99 on the soil pipe 7, 92 which on installation is connected to a sewer pipe 7a and a vent pipe 11. The toilet is connected to branch 96 of the soil pipe 92. The air heater 3 may be heated by gas or oil supplied by a pipe 10, or in a modification is shown heated by solid fuel, and supplies of hot air to ducts 8, Fig. 4, contained in a space above the unit and leading to grills 123 in the kitchen &c. A ventilating duct 9 also contained in this space leads from a grill in the kitchen to a compartment 127 of the chimney and another ventilating duct 72 leads from the interior of the unit to another compartment 130 of the chimney. The electrical distribution panel 4 is connected by conduits 106 to outlet boxes 108 for supplying, for instance, the refrigerator and stove in the kitchen.
Patent GB-1302925-A (GB)
IPC: B01D53/77
Filed: 1970-02-12
Abstract: 1302925 Gas scrubbers NATIONAL DUST COLLECTOR CORP 12 Feb 1970 [14 April 1969] 6909/70 Heading B1R Gas to be scrubbed free from solid contaminants passes by inlet 22 to inlet chamber 26 and thence through a grid of vertical rods or tubes 101 into outlet chamber 46. As shown, the grid structure comprises eight vertically located spaces on a frame, each of which may be filled either with a grid assembly or with a blocking plate 102 as desired. Water is sprayed on to the upstream face of the grid assemblies, and is also allowed to trickle down over the upstream faces of the rods or tubes 101 from trough 86 and weir 86b. Moist gas from outlet chamber 46 passes up through rotating vane assembly 148, the vanes being of such profile that the moisture-laden gas is thrown spirally outwards through perforated cylindrical plates 160 against housing wall 54. Water which separates runs down into circumferential trough 138 and is passed back by pipe 156 to trough 86. Dry cleansed gas leaves the scrubber by outlet 66, while effluent wash liquid leaves sump 38 by pipes 126, 128.
Patent GB-710184-A (GB)
Title: On-load tap selector for tapped transformers
IPC: H01H9/00
Filed: 1951-03-22
Abstract: 710,184. Regulating switches. JANSEN. B March 22, 1951, No. 6938/51. Class 38(5) In an on-load tap-changing switch similar to that of Specification 710,183, each main and auxiliary moving contact co-operates with its own individual circle of fixed contacts, H, and ha, hb, respectively, the fixed contacts relating to the same transformer tapping being electrically connected together. As shown, the circles of contacts are spaced axially along an insulating cylinder, the connecting cables being arranged helically around the cylinder between the circles. The common guide T is extended axially so that the movable contacts are mechanically connected together. Change-over resistances Ua are connected between the main and auxiliary contacts.
Patent GB-300848-A (GB)
Title: Grippers for praline and like wrapping machines
IPC: B65B11/54
Filed: 1928-03-06
Abstract: 300,848. Mathys, A. W., (Lauenstein & Co. Ges.). March 6, 1928. Packeting by wrapping-up.-Relates to gripping devices for feeding pralines, chocolates, &c. and like irregularly shaped articles in wrapping-machines. For convenience of representation, two forms of gripper are shown in Fig. 1, mounted on a rotary carrier 2 on a shaft 1. The form in the lower portion of the Figure comprises arms 3, 4 pivoted at 6, 5 and normally held closed by the action of springs 18 upon pins 17 in recesses 16 in opposed extensions 14, 15 of the arms. Jaws 7 with slotted stems 7<1> are adjustably mounted on the arms by bolts 8<1>. The jaws are provided with rubber sponge or like resilient pads 11, which may be secured by intermediate supports 12 of thin metal plates cased in resilient material, or the pads may be fixed directly to the jaws, which are first coated with rubber. In the other form a plurality of jaws 7 is adjustably secured to each arm, a series of holes 9 being provided for the clamping bolts. Springs 20, weaker than the springs 18, connect the arms of adjacent pairs to cushion the action of the springs 18. In use, an article is placed in the jaws and the rotation of the carrier 2 brings a projection 21 on the arm 4 against a fixed stop which opens the jaws.
Patent GB-136738-A (GB)
Title: Improved Means for Securing Books in Detachable Covers.
IPC: B42D1/06
Filed: 1919-03-20
Abstract: 136,738. Knight & Co., C., and King, J. S. March 20, 1919. Covers. - Protective detachable covers are attached to books by straps on the detachable cover passing through loops on the book cover. The boards A of a detachable cover have straps C, D fastened to the inside at the top and bottom. Cuts E are made in the book cover B to form loops under which the straps are passed. The end of the strap C is cut away to form flaps H which pass into slits I in the end cf the strap D. Pockets J at the corners of the board A receive the corners of the cover B.
Patent GB-238148-A (GB)
Title: An improved carrier for radiological fluorescent screens
IPC: G21K4/00
Filed: 1925-03-16
Abstract: 238,148. Greville, E. R. G., and Read, F. W. March 16, 1925. R÷ntgen-ray apparatus.-A vertically-adjustable occulting panel has a circular aperture over which is rotatably mounted a fluorescent screen-carrier formed of occulting material and so constructed that the rays are occulted in any angular position of the screen. As shown, the vertically-adjustable leaden or like panel a has a circular aperture b which is covered bv a circular screen-carrier c, rotatable on studs or rollers d to change the orientation of the screen c, which is secured in an operture in the carrier as by spring arms f. The carrier and screen are provided with handles g, h.
Patent GB-374150-A (GB)
Title: Improvements in hydraulic brakes for vehicles
IPC: B60T11/228
Filed: 1931-03-06
Abstract: 374,150. Hydraulic brakes. CLAYTON DEWANDRE CO., Ltd., Titanic Works, Lincoln, and PAYNE, M., 50, Hook Road, Surbiton, Surrey. March 6, 1931, No. 7089. [Class 103 (i).] In an hydraulic braking system for motor vehicles in which the pistons or plungers of the brake cylinders are fitted with cup-washers, a piston 1, diaphragm, or bellows is interposed in the hydraulic transmission conduit 4, 5 between the master cylinder and the brake cylinders, and is acted on by a spring 6 so that on release of the brake a residual hydraulic pressure is maintained in the brake cylinders which keeps the cup-washers expanded. In order that the fluid displacement for a full application of the brake may if necessary exceed the volume swept out by the maximum movement of the piston 1, the piston is fitted with a non-return valve 7. On release of the brake an abutment 8 opens the valve and when the pressure in the brake cylinders reaches a predetermined minimum value the spring 6 moves the piston 1 forward to permit the valve to close. The valve may be disposed in a byepass communicating with both sides of the piston.
Patent GB-1165584-A (GB)
Title: Circuit Arrangement for the Automatic Balancing of Pre-Set Current Values which can be Varied Arbitrarily.
IPC: H02J3/36
Filed: 1967-02-17
Abstract: 1,165,584. High voltage D.C. systems. LICENTIA PATENT - VERWALTUNGS G.m.b.H. 17 Feb., 1967 [18 Feb., 1966], No. 7619/67. Heading H2F. [Also in Division G3] In an arrangement such as a high voltage D.C. transmission system including a plurality of input current sources, e.g. E 1 , E 2 , E 3 , each producing a respective output current, e.g. A 1 , A 2 , A 3  in which it is desired to maintain the sum of the output currents at a predetermined fixed value despite arbitrary variations in any one of the individual output currents, there is provided a control circuit which automatically balances the currents in the arrangement to achieve the desired object. As shown, the control circuit comprises summing networks 1, 2, 3, which receive one input from the sources E 1 , E 2 ; the outputs of the summing networks constitute the output currents A 1 , A 2 , A 3  and these outputs are also applied to an adder 4 (Fig. 6, not shown), which compares the sum of the outputs with a desired value set by a device 6; the resulting output from adder 4 is applied, over an amplifier 5 (Fig. 8, not shown), and respective adjusting impedances 7, 8, 9, as another input to the summing networks 1, 2, 3. The arrangement is such that the values added in the summing networks 1, 2, 3 to the input values E 1 , E 2 , E 3  are automatically varied in dependence upon variations in the output from the adder 4 in such a manner that the sum of the output values A 1 , A 2 , A 3  is maintained at the desired value determined by the setting of device 6. The arrangement may include a switch operable to connect the output of the device 6 additionally to any one of the summing networks 1, 2 or 3 (Fig. 2, not shown) and may also include limiting circuits associated with the outputs of the networks 1, 2, 3 (Figs. 3, 4 and 7, not shown). A superimposed closed loop control circuit may be arranged to keep one of the outputs, e.g. A 1 , at a pre-set value despite variations, in the other output values (Fig. 5, not shown).
Patent GB-347808-A (GB)
Title: Apparatus for indicating alterations in the speed of travel of vehicles
IPC: G01P15/03
Filed: 1930-03-05
Abstract: 347,808. Signalling alterations in speed to a following vehicle. JACKSON, L. MELLERSH-, 28, Southampton Buildings, London.-(Siemens - Schuckertwerke Akt.-Ges. ; Siemensstadt, Berlin.) March 5, 1930, No. 7265. [Class 118 (ii).] Relates to acceleration and retardation indicators of the type in which a vessel filled with indicating liquid has a yoke piece running longitudinally of the vehicle and indication is effected by the changed position of a driving mass in the yoke piece movable in the direction of travel and having a density other than that of the indicating liquid, and comprises rising tubes connected to the yoke piece and arranged side by side in a plane perpendicular and transverse to the vehicle axis and both visible from the rear and lying in the path of rays from a source of light. Two rising tubes 3, 4 are connected by means of tubes 23, 24 with the ends of a yoke piece 2 parallel to the longitudinal axis of the vehicle. The rising tubes are pressed flat transversely to the vehicle and are arranged adjacent one another in a plane perpendicular to the vehicle axis, being ballooned out above and below the flattened portions. The device is filled with liquid such as opaque creosote or toluol and the yoke piece contains a mass 5 of quicksilver. A restriction 21 is provided in the yoke piece 2. There is no appreciable displacement of the quicksilver due to gradients or rounding curves, but to eliminate any slight effects a compensating tube 33 with a restriction 331 is connected to one end of the yoke piece 2 and to a lower balloon-shaped widening 31 of the tube 3. Effects due to temperature changes are compensated by an expansion vessel 6 having a capillary restriction 61. The balloon parts 32, 42 and the vessel 6 are in communication as shown. The tubes are secured to the casing 8 by the aid of clamps and a plastic setting mass. The indicating apparatus is illuminated by a lamp 9 which also illuminates the vehicle number plate through an aperture 10. A reflector 12 and lens 13 are provided for daylight use. Red and green filters 44, 34 are arranged in front of the tubes 4 and 3 respectively. A window 82 of ground glass is provided in front of the tubes, the glass being backed with gauze or wire netting. When the vehicle accelerates, the liquid in the tube 3 falls and a green light is shown to a following vehicle. On retardation, the liquid in the tube 4 falls and a red light is shown. When the car is standing still or moving at a uniform speed the liquid in the tubes stand at the same height and no light is shown. All parts not directly required for indication purposes are coated with dark lacquer. Several constructional modifications are described.
Patent GB-575877-A (GB)
Title: Improvements in or relating to filters, particularly for vacuum cleaners
IPC: A47L9/14
Filed: 1944-04-20
Abstract: 575,877. Filters for suction cleaners. AKTIEBOLAGET ELEKTROLUX. April 20, 1944, No. 7306. Convention date, May 14, 1943. [Class 8 (ii)] A vacuum filter bag 12 is attached to a flanged supporting sleeve 14 held between casing 10 and cover 11 of the cleaner by first reinforcing a hem 19 with a split ring 18, then inserting in an axially or radially disposed groove 17 in the sleeve 14 and afterwards pressing the groove mouth 17 so that it becomes less in width than the inserted reinforced hem. The invention can be applied to plane filters.
Patent GB-738513-A (GB)
Title: Improvements in or relating to room heating systems
IPC: F24D3/14
Filed: 1953-03-17
Abstract: 738,513. Flooring blocks. KAHR, G. March 17, 1953 [April 10, 1952], No. 7411/53. Class 87 (1). [Also in Group XIII] In an arrangement (see Group XIII) for heating rooms by hot water pipes embedded in granular material covered by laminated wood boards, the boards have an upper wearing layer of transverse strips 9 having the tangential direction of the annual rings vertical as with quarter sawn timber glued to a lower layer 10 of lengths of wood extending longitudinally and having slots 16 for reducing shrinkage and swelling. The boards are joined together by grooves 11 and tongues 12.
Patent GB-349165-A (GB)
Title: Improved electro-magnetic double-acting balanced valve
IPC: F16K31/06
Filed: 1930-03-07
Abstract: 349,165. Electromagnetically actuated valves. MUSGRAVE, J. L. and CRITTALL & CO., Ltd., R., 43, Bloomsbury Square, London. March 7, 1930, No. 7489. [Class 135.] A balanced valve particularly adapted for use in conjunction with a thermostat is actuated by a pair of solenoids arranged one at each end of the valve. The valve member comprises cylindrical heads b<5>, b<6> adapted to cooperate with apertures a<5>, a<4> in a hollow projection a<1> communicating with the inlet a<3>, grooves b<3>, b<4> being provided to permit the passage of fluid when the valve is open. Cores d<2>, d3 working in solenoids D, D<1> are secured to threaded spindles b<1>, b<2> on the valve member.
Patent GB-512891-A (GB)
Title: Improvements in extrusion machines for the manufacture of pottery products
IPC: B28B3/22
Filed: 1938-03-10
Abstract: 512,891. Extrusion machines. POUSSEL, L. March 10, 1938, No. 7514. Convention date, April 8, 1937. [Class 87 (ii)] A screw-propelling extrusion machine for manufacturing pottery products comprises a casing 1 for receiving the pasty material, the casing being provided with a lining 4 made of materials of different hardness bound together so as to form a wall which is always rough and porous, so that the material does not rotate with the screw 3. The lining has a projection 5 engaging a groove 6 in the outer wall of the casing, a space 7 being formed to collect excess water from the pasty material.
Patent GB-951233-A (GB)
Title: A contact printing screen
IPC: G03F5/14
Filed: 1960-03-03
Abstract: 951,233. Contact printing screens. F. J. ECKHOUT. March 3, 1960 [March 5, 1959], No. 7529/60. Drawings to Specification. Heading G2M. A contact printing screen comprises identical congruent groups of light transmitting faces, each group consisting of congruent faces arranged in subgroups of different neutral optical densities; all the faces have the same area. Preferably, the densities of the various faces from an arithmetical series, and the logarithm of the relative number of faces having a given density is a linear function of the density. The faces may be triangles squares, or hexagons. The screen may be formed photographically.