baber/WOPTO huggingface dataset:
Patent GB-1235473-A (GB)
Title: Amplifiers
Inventor: BRINKER CARL SIEGMUND DEN
IPC: H03F1/18
Filed: 1967-06-21
Abstract: 1,235,473. Transistor amplifiers. TEXAS INSTRUMENTS Ltd. 9 Aug., 1968 [21 June, 1967], No. 2855/71. Divided out of 1,235,472. Heading H3T. The transistors VT1, VT2 or VT3, of a distributed amplifier are connected through input transmission line branches IBL1, IBL2 or IBL3 to an input line which is decreased in characteristic impedance at each branch junction, and the transistor outputs are connected to an output line OPL by networks MNO which ensure that the outputs are added in phase. Each input branch is coupled to its transistor by a circuit MNI consisting of an inductance and a capacitance (Fig. 3, not shown) which matches the branch line Z 0  to the resistive part of the transistor input impedance. The input impedance of each transistor at the high frequencies of operation is regarded as being a series inductance (L 1 ) and a shunt resistance (R 1 ). The input line (and output line) is a strip line having a conductive layer separated by a dielectric layer from a ground plane, the width of the conductive layer which carries the input signal being reduced each time a branch line IBL1 &c. goes off. The output coupling circuits (Fig. 5, not shown) include an inductance, which couples the transistor output capacitance (C o ) and resistance (Ro) to the output line. The input coupling circuits may include a quarter wavelength section strip line connected to the L-C circuit (Fig. 4, not shown) and it is said that they could be Tchebycheff or Butterworth filters.
Patent GB-100722-A (GB)
Title: Improvements in Rotary Pneumatic Drills.
Inventor: MELLERSH-JACKSON WILLIAM JOHN
IPC: B23B45/04
Filed: 1916-02-26
Abstract: 100,722. Jackson, W. J. Mellersh-, (Ingersoll-Rand Co.). Feb. 26, 1916. Drilling-machines; driving machine spindle.- Rotary pneumatic drilling-machines of the type in which the spindle is driven through ratchet levers have a number of cylinders acting through separate levers so set that their pawls act in succession on the same tooth. The cylinders are set in staggered relationship and are of areas inversely proportional to their distances from the spindle. The piston-rods are slotted to engage the ends of the levers, which have their motion equalized and limited by a crank-shaft 32, driven by bearings sliding in slots in the levers, and driving the distributing-valve by a pinion 42. Framing.-The casing is divided diagonally on a plane containing the axis of the crank-shaft. Spindles.-The spindle has upper and lower bearings 4, 6 and a central portion 5, formed as a ratchet-wheel, all of the same diameter. The bearing 4 engages a flanged sleeve 7, and end thrust is taken by a ball race. Feed-screws.-A telescopic feed-screw 12 is provided.
Patent GB-412325-A (GB)
Title: Transportable rollers for picking up water, snow, and such like, from the ground, greens, pavements and the like, and for expressing same
IPC: E01H1/10
Filed: 1933-01-31
Abstract: 412,325. Land rollers. HIGHFIELD, F. G., Clanver, Green Lane, and HARGREAVES, W., Glendaruel, Thorley Lane, both in Timperley, Cheshire. Jan. 31, 1933, No. 2937. [Class 6 (i).] Relates to transportable ground - rolling machines in which the roller is adapted to absorb the water or snow on pavements, greens, and the like, and in which means are provided for expressing the absorbed moisture from the roller. According to the invention, the axle a<1> of the roller a is mounted in cam slots c<2> in the supporting frame and is thereby capable of displacement relatively to the expressing or squeezing roller e<1> which has trundling wheels e<2>. The squeezing action is effected by inverting the machine and rotating the wheels e<2> by hand, or by wheeling the inverted machine on the wheels e<2>. In the form shown, the drum a is covered with an absorbent material, such as woven fabric, or several layers of felt. The axle has reduced ends a<2> engaging in the lobes of the cam slots, and with these reduced ends engages the drilled heads f<2> of two resilient couplings f. These couplings maintain the roller in either of its two positions of adjustment and are mounted one on each end of the shaft e of the squeezing roller e<1>. Upstanding members c form feet for the machine when in the inverted position. A scraping device against which the roller may be periodically brought to bear, may be provided when the machine is dealing with snow. Specifications 371,524 and 376,585 are referred to.
Patent GB-710022-A (GB)
Title: Drying apparatus
IPC: F26B17/08
Filed: 1952-02-05
Abstract: 710,022. Drying apparatus. MIAG MUHLENBAU U. INDUSTRIE GES. Feb. 5, 1952 [Feb. 5, 1951], No. 3014/52. Class 34(2) Apparatus for drying edible pastes &c. has a drying chamber 1 connected to a cooling compartment 2 and conveyers 3 to carry the material which enters at inlet 4 and is discharged by a device 5. Chamber 1 is horizontally subdivided by partitions 6 constructed as louvres or adjacently disposed flaps, Fig. 2, so that drying air entering at 8 and passing upwardly through the chamber may be controlled by operation of the flaps. Regulable suction openings 7 are mainly arranged above the last drying band 3.
Patent GB-1492061-A (GB)
Title: Channel-shaped sealing finishing and guide strips
IPC: B60J10/00
Filed: 1974-01-23
Abstract: 1492061 Edge strips DRAFTEX DEVELOPMENT AG 14 Jan 1975 [23 Jan 1974] 3052/74 Heading B5K [Also in Division E1] A reinforcement for an edging strip comprises U-shaped elements having adjacent legs interconnected by links 10, the points of connection having equal flexibility. The links are of uniform width and slanted with respect to the legs. The reinforcement is made by stretching a slit metal blank and bending it into U-shape. The reinforcement is covered with textile, elastomeric and/or plastics material.
Patent GB-686163-A (GB)
Title: Improvements in heat insulated or refrigerator vehicle bodies especially suitable for lorries or trailers
IPC: B61D27/00
Filed: 1949-02-04
Abstract: 686,163. Refrigerator vans; refrigerator cars. ETUDES & TECHNIQUES NOUVELLES SOC. A R.L., and LE BIHAN, P. V. M. Feb. 4, 1949, No. 3068/49. Classes 103 (iv) and 108 (i). A heat-insulated or refrigerator double-walled body for road or rail vehicles comprises an outer metal casing 1, Figs. 3, 4, stiffened by metal sections 2, 4, connected directly thereto so as to form a single stressed hull to support most of the strains, the heat-insulated chamber being defined by an inner sheet-metal casing similarly reinforced by metal sections to support the strains due to the load and to transmit these strains to the hull by means of wooden struts 8, Figs. 5 (not shown), assembled on the stiffeners 2, 4, and also on wooden framing 9. The space between the casings at the bottom may be filled with cork or ebonite, and a lighter material may be used for the walls and top. The floor comprises a number of metal sections 10, Fig. 6, supporting through wooden gussets 11 transverse wooden rails 12, above which are arranged sheet-metal panels 13. On these panels are arranged longitudinal metal sections 14 which support a wooden lattice floor 15. At the rear of the body a door 16, Fig. 2 (not shown), is hinged on one of the stiles 17 of its own frame, which frame is secured to a supporting frame 18 secured at 19 to the inner casing which is provided with a wooden frame 20. The frame 18 is also secured at 21 to the hull and is stiffened by metal sections 22. The struts and skeleton framework may, however, be made of heat-insulating materials other than wood. If a refrigerator body is required, the equipment, e.g. the cooling coils, may be arranged between the walls.
Patent GB-802217-A (GB)
Title: Combined inlet-outlet valve
IPC: F16K15/14
Filed: 1956-01-31
Abstract: 802,217. Valves. TAYLOR, E. H., and BAXTER WOODHOUSE & TAYLOR, Ltd. Jan. 31, 1956, No. 3137/56. Class 135. A housing 1, which has an inlet 2, a threaded outlet 3 and apertures 13 leading to an incubator or a container serving a pressure helmet or breathing mask, not shown, encloses a differential valve-closure member 5 consisting of upper and lower tubular parts 7, 9 and an intermediate disc 6 with ports 19 therein. The part 9 which has a knife edge that co-operates with an adjustable flat, or as shown, a domed seat 10, is formed with an internal diameter larger than the external diameter of the part 7 by an amount equal to half the difference between the latter and the internal diameter of the lower end of the outlet 3 to ensure that the member 5 remains seated when the pressure in the housing is greater than ambient pressure. A resilient rubber tube 8 interconnects the outlet 3 and part 7 whilst a flexible rubber diaphragm 18 having a central opening, cooperates with the ports 19. When the housing interior is at ambient pressure the member 5 is urged on to the seat 10 by the tube 8 but upon gas at a higher pressure than that in the container being supplied to the inlet 2 it reaches the apertures 13 by way of ports 19 and the diaphragm aperture. Upon the container pressure exceeding that of the supply the diaphragm 18 is forced to cover the ports 19 whereupon the pressure difference across the member 5 lifts the latter from the seat 10 and opens the outlet 3. In a modification, the annular diaphragm is stuck, rivetted or otherwise secured to the closure member and normally engages a seat inside the housing, the reaction of the diaphragm against which assists the rubber tube in keeping the closure member on its seat. The internal and external diameters of the upper tubular part and outlet, respectively, are the same and the internal diameter of the lower tubular part is smaller than the external diameter of the upper tubular part and equal to the diameter of the circle defined by the locus of the centres of curvature of the annular corrugation of the unsupported portion of the tube between the upper tubular part and the outlet.
Patent GB-270380-A (GB)
Title: Switching arrangements for electrical machines
IPC: H02J9/06
Filed: 1926-02-03
Abstract: 270,380. Siemens Bros. & Co., Ltd., and Turner, V. Feb. 3, 1926. Automatic exchange apparatus .-A tumbler switch 14 controlling main and reserve ma. chines of a telephone exchange, such as ringing motor-genera. tors and machine driven interrupters, is moved by a handle 20 to put the main machine into operation and is retained by an overset toggle 28, 29 against the action of springs 25, until a magnet 32 is energized due to failure of the main machine, whereupon an armature 33 is attracted, causing a screw 36 to knock the toggle out of alignment, thereby allowing the spring 25 to rotate the handle and move the switch 14 to cut out the main machine and cut in the reserve machine. The handle 20 and casing 22 containing the toggle mechanism &c. are located in front of a panel 1 and the shaft 19 is keyed to a shaft 10 located behind the panel and operatively connected to the switch 14. An insulating cam 16 on the shaft 10 co-operates with change-over spring sets 7, the middle and longer spring of each of which normally contacts with the inner spring, but when the reserve machine is switched in, each middle spring is moved to contact with the outer spring, thereby changing over the outgoing circuits from the main to the reserve machine.
Patent GB-1407872-A (GB)
Title: Installation for remote reading of data available at local  stations
IPC: H04Q9/14
Filed: 1973-01-22
Abstract: 1407872 Selective signalling COMPTEURS SCHLUMBERGER 22 Jan 1973 [21 Jan 1972] 3203/73 Heading G4H In an installation for the remote reading of data, e.g. meter readings, a central station sends clock signals as potential difference of one polarity between a pair of lines to local stations which send address and data signals as potential difference of the opposite polartity between the same pair of lines, each local station having a reception circuit which distinguishes, on a polarity basis, clock signals from address and data signals and routes them to respective outputs. A keyboard and shift register in the central station sends the address of the first local station required to supply data to the central station, the address being sent using the said opposite polarity on the same pair of lines. At each local station, the address signals are compared serially with a "preparatory" address read from a store and serialised under control of a counter driven by the clock signals. Equality sets the station into a transmit mode in which the counter controls serialisation of a "local" address (respective to the local station) followed by meter data, the serialised address and data being transmitted under the control of the clock signals. The address is compared with the "preparatory" address in each other local station to select the next local station. All address and data signals on the pair of lines are extracted (by polarity) at the central station and recorded on magnetic tape, together with the clock signals. In a local station, the counter may select columns of a matrix in turn to provide the preparatory and local addresses and the meter readings, each column then being serialised under control of the counter, the addresses being provided by fixed diode connections in the matrix and the meter readings via phototransistors in the matrix. Arrangements are provided to switch off power in the local stations as and when not needed.
Patent GB-710531-A (GB)
Title: Improvements in or relating to method of making sponge material and resulting product
IPC: C08J9/00
Filed: 1952-02-07
Abstract: A sponge material is prepared by forming dispersed bubbles in a solution comprising polyvinyl alcohol and reacting the alcohol with formaldehyde in the presence of an acid catalyst, there being added to the reactants before the reaction is complete a finely divided polyvinyl formal.  This finely-divided material may be ground scrap, its maximum particle size four mesh, and it may be present in the sponge material in up to 20 per cent. by weight. It is preferred that from 35-80 per cent. of the hydroxy groups of the alcohol are reacted.  The acid catalyst may be sulphuric acid, and pigments may also be present.  Specification 682,313 is referred to.
Patent GB-124247-A (GB)
Title: Improvements relating to the Manufacture of Gas.
Inventor: REW REGINALD JOHN
IPC: C10J3/00
Filed: 1918-02-25
Abstract: 124,247. Rew, R. J. Feb. 25, 1918. Carbonizing-apparatus. - For manufacturing water gas in horizontal coking-ovens, to mix with the coal-gas obtained by coking, superheaters are arranged in the retort setting or in the retort itself. As shown in Fig. 2, a coiled pipe a which acts as a generator and superheater is arranged in a chamber in the retort setting formed by a fireclay casing e. The superheater passes through a cap d, which closes the chamber c, and outside this cap the pipe a is connected by a V-tube f which feeds water supplied by a service pipe h to the pipe a, and a union joint a' connects the pipe a to a pipe k connected by a union joint i<1> to a pipe i which leads into the retort and conducts the steam to a steam distributor j. The superheater and the distributor may be removed during coking, or dampers may be arranged to cut the heat off from the chamber e during coking. One superheater may connect to several distributors, and the steam pipes may be lagged. In a modification in which the heat of the retort is directly used to heat the superheater, the superheater is formed with an inlet a' for water or steam, and with branches a<3>, a<2> through which the steam passes in the order mentioned, before passing to the distributor, the whole arrangement resting on the floor of the retort.
Patent GB-360761-A (GB)
Title: Improvements in reflecting signals for use on roadways
IPC: E01F9/053
Filed: 1931-02-03
Abstract: 360,761. Reflectors. WALTON, A. L., 26, Withnell Road, Blackpool. Feb. 3, 1931, No. 3383. [Class 97 (i).] A system of reflecting signals to indicate at night to the driver of a vehicle the lateral limits of the road comprises a number of elements fixed to the kerb and provided with reflecting surfaces to render them visible to the driver when illuminated by the lights of the vehicle. The element shown in Fig. 1 comprises a transparent glass &c. member 1 having a cavity 2 which is silvered to form the reflecting surface. The element is recessed into a kerbstone 4 in which it is held by cement 5. In Fig. 3 the reflector 10 is a separate member mounted on a support 11 beneath the transparent cover 1. The reflectors may be attached to the side of the kerbstone instead of the upper surface.
Patent GB-799257-A (GB)
Title: Improvements in or relating to apparatus for use in liquid storage
IPC: B65D88/34
Filed: 1957-01-31
Abstract: 799,257. Fittings for tanks. BRITISH PETROLEUM CO., Ltd., and CHAMPAGNET, A. Jan. 31, 1957 [Feb. 4, 1956], No. 3398/57. Class 69 (1). Apparatus suitable for use in a storage tank having vertical side walls for reducing losses of volatile liquids by evaporation when stored in the tank, consists of a flexible screen 2 of synthetic resin, shaped to cover, when in use, substantially but not entirely the free surface of the stored liquid whereby there remains a narrow annular clearance between the periphery of the screen and the walls, the screen having attached to it floats 4 to cause the screen to float, a stiffening member consisting of a hollow tube 19 being attached to the screen near but within its periphery. A filling pipe 7 is mounted at the bottom of the tank and is provided with an extension tube 8 having an open end 9 and a plurality of holes 10 formed in its upper surface. The screen 2 is provided with a plurality of holes 11 disposed on both sides and along the length of the tube 8 (Fig. 2) Valves 12 are provided to cover the openings 11. Each valve is made of a plastic material in the form of a bell with a lip 13 connected by welding to the screen. The valve contains an aperture 14 covered by a flap 15 which is weighted by a bead 17. The flap 15 opens when air or any gas is introduced into the tank with the pumped liquid. The tube 19 may be made in a number of pieces to maintain suppleness of the screen or in the form of an annular element. The tube may be semi-rigid and made of synthetic resin or it may consist of a plurality of hollow tubes made of aluminium. Specification 796,699 is referred to.
Patent GB-697633-A (GB)
Title: Improvements in devices for treating photographic or cinematographic films
IPC: G03D3/13
Filed: 1951-02-12
Abstract: 697,633. Photographic developing apparatus. DEBRIE, A. V. L. C. Feb. 12, 1951 [Feb. 20, 1950], No. 3421/51. Class 98 (ii). [Also in Group XVI] In a device for treating photographic and kinematographic films, the film is fed through several helical passages arranged so that the outlet of each passage is aligned with the inlet of the next passage by driving drums arranged between each outlet and each inlet and each drum is driven by friction whereby it is allowed to slip when the film tension exceeds a predetermined value. In the developing apparatus shown, a film 1 is fed from a.spool 3 by a sprocket 4 on to a drum 6a mounted together with drums 6b, 6c ... on a shaft 12 driven by a belt and pulley arrangement 15-17 from the motor 13 which rotates sprocket 4. The drum 6a is mounted adjacent the inlet of a tube 8a and the other drums are disposed between the aligned outlets and inlets of succeeding tubes 8b, 8c ... , the tubes being arranged in the form of a helix. Rollers 19 press the film on to the drums; preferably three rows of rollers 19 are provided so that the film strikes and leaves each drum tangentially. Each drum consists of a disc 26, Fig. 4, freely rotatable on a hub 29 of shaft 12 and having a peripheral lining 25 as of rubber. Friction discs 32, 33 are disposed on each side of disc 26. A washer 35 is held fast on the hub 29 between the disc 32 and an annular flange 36 of the hub, and a similar washer 42 is provided between disc 33 and a hollow rubber ring 44 contacted by a plate 45. The friction discs 32, 33 and the washers 35, 42 are pressed against the disc 26 by tightening a nut 46 between which and the plate 45 a washer 49 is positioned. The dimensions of sprocket 4 and of each drum and the belt and pulley arrangement 15-17 is such that the linear speed u of film 1 is less than the peripheral speed U of each drum so that the drum is caused to slip when it is engaged by the film. In this way any slack in the film is immediately taken up by an increase in speed of a drum and slippage of the drums prevents excessive film tension.
Patent GB-117048-A (GB)
Title: Improvements in Combing Machines.
IPC: D01G19/08
Filed: 1918-02-27
Abstract: 117,048. Lees & Co., A., and Clegg, J. W. Feb. 27, 1918. Combing-machines.-In a Nasmith combing- machine, the feed-roller c is provided with the usual trunnion levers i, which are weighted by levers g, one end of which bears on the levers i, and the other end of which is connected to a spring d. The spring is connected to a rod provided at its end with a V-piece k bearing against a stationary bracket m supported at its lower end by the frame. The trunnion lever may have an extension to which the spring is attached directly.
Patent GB-778549-A (GB)
Title: Improvements in road reflectors or like signs
IPC: E01F9/619
Filed: 1956-02-03
Abstract: 778,549. Road-traffic signs. LOVELL, S. M. Feb. 3, 1956, No. 3482/56. Class 3 (2). A kerbstone is provided with reflex reflectling means 19 adapted to be cleaned by a wiper 17 actuated by a bellows 11 which is responsive to a blast of air or pulse of fluid pressure produced by a vehicle depressing a rubber pad in the road. In a modification Fig. 3 (not shown), the bellows is provided with a separate base. The devices above are characterized in that the bellows is formed of rubber or like resilient material with an axially disposed stem of like material upstanding from the base, the said stem being formed with a portion of reduced diameter which is engaged by a slot in one arm 16 of the wiper. The arm 17 of the wiper may be bifurcated and provided with two wipers, see Fig. 2 (not shown). Specification 681,305 is referred to.
Patent GB-739513-A (GB)
Title: Improvements in petrol lighters
IPC: F23Q2/02
Filed: 1954-02-05
Abstract: 739,513. Pyrophoric lighters. SCHMIDT METALLWARENFABRIK, GEB. Feb. 5, 1954 [April 21, 1953], No. 3523/54. Class 75 (3). A table lighter has a torch mounted on the end of a flexible member and a pyrophoric metal mounted on an upright side of the lighter body. The torch comprises a striker pin 6 surrounded by a sleeve 7 containing a wick 8 and is inserted in the side wall of a fuel reservoir 9 through an opening 5. The pyrophoric metal 11 is mounted in a holder 12 slidable in a guide 13 and pressed upwards by a spring 14. To operate the lighter the holder 12 is moved downwards by a knob 17 until lugs 18 on the holder 12 engage beneath lugs 19 on the lighter wall. The torch is then pressed against the metal 11 through an aperture 20 to deflect the guide inwardly to disengage the lugs 18, 19 so as to allow the spring 14 to move the holder 12 and the metal 11 upwards to a stop 15 in order to produce a spark between the pin 6 and the metal 11. The lighter is in the form of a minature petrol pump and the torch is attached to the end of an imitation hose 4.