baber/WOPTO huggingface dataset:
Patent GB-857463-A (GB)
Title: Improvements in and relating to multiply paper bags
Inventor: OWENS WILLIAM VINCENT
IPC: B65D75/58
Filed: 1956-10-25
Abstract: 857,463. Paper bags. PAPER SACKS Ltd. Sept. 30, 1957 [Oct. 25, 1956 ; Jan. 1, 1957], Nos. 32578/56 and 20/57. Class 94(2). A multiply blockbottom bag has a tab or tabs projecting from under and beyond the plies of the folded outer face flap of the blockbottom closure with the projecting portion of the tab(s) free to afford a manipulating hold, the arrangement being such that when the tab(s) is pulled upwardly and back the blockbottom is torn in the tab zone to expose a pouring orifice. As shown in Fig. 1 the bag has five plies a-e and the tab f is formed integral with or pasted on the innermost ply a. The tab is formed on the outer face flap g which is folded upon the inner fo ded face flap h. To facilitate tearing the outermost ply e is slit at e<SP>2</SP> and the ply d may be recessed as at d<SP>1</SP>. Pasting of the flap g to the flap h is done as usual except that pasting may be omitted from certain plies of the flap h underlying the tab zone. Thus it is sufficient to secure the tab to the ply a and the ply e. The tab may be provided on the ply b in which case the ply a is pasted in rear of the tab to the ply b and provided with slits to facilitate tearing. Further, instead of a single tab two tabs may be employed, one provided on the innermost ply and extending to, and secured to a tab provided on an outer ply which latter projects for seizure. In the case of bags made from bag tubes having flush ends the inner ply may be provided with a tab or each ply or other plies may have tabs pasted together. The plies may also be provided with slits. The tab may be provided in a corner fold j, Fig. 7, of a valved or non-valved blockbottom bag. In this embodiment the tab f, in the form of a rectangular piece of paper, is pasted over the corner flap j after the first blockbottom folding operation has been completed. In the case of a valved bag the flaps hand g are folded over and pasted together but paste is omitted between the flaps and the top of the tab f. In the case of a non-valved bag the flaps hand g are pasted upon the tab, and the tab may be pasted to the flap h prior to, instead of after, the first folding thereof.
Patent GB-287956-A (GB)
Title: Improvements in or relating to telegraphy
IPC: H04L25/24
Filed: 1926-12-23
Abstract: 287,956. Smith, W. S., McLachlan, N. W., and Jacob, W. G. R. Dec. 23, 1926. Duplex telegraphs; systems using code elements distinguished by polarity of current; restoring or modifying imperfect signals. - Incoming cable code signals are appllied to the plate of a hightensionless valve whose grid is supplied with locally-generated A.C., and the resulting impulses actuate a telegraphic receiver. Thus, in a duplex bridge with transmitter T. two valves V1, V2 are symmetrically connected between a cable K, and artificial line L. The plate p1 is connected to the cable K through a shaping network N1, the filament f1 (heated through a transformer to avoid earthcapacity effects) is connected through a potentiometer to the artificial line L, and the grid g1 is connected to the artificial line through the secondary of a transformer T, which conveys alternating potential. Similarly the plate p2 is connected to the artificial line, and the filament f2 and grid g2 to the cable. When an incoming positive signal impulse renders the plate p1 positive with respect to its filament and grid, rectified current impulses of a frequency (such as 1,000 cycles) determined by the local A.C. excitation of the grid pass through the transformer T1, tuned circuit C3 and transformer T1 to upper valve V3 of a back-to-back pair. After further amplification by the valves V4 the output from terminals a, b, is applied through a shaping amplifier (such as that described in Specification 282,130) to receiving apparatus. Similarly an incoming negative impulse renders the plate' p2 positive with respect to its filament and grid, and the valves V2, V<1>3, V<1>4 are rendered active so that output impulses are taken from the terminals b, c. The frequencies of the locally generated A.C. grid voltages of the valves V1, V2, may be different in order to minimize interference between positive and negative signals. In a modification both halves of the locally generated A.C. wave are utilized; thus the two-valve system shown in Fig. 2A may be substituted for the one-valve system lying between the points X, Y, Fig. 1. In a further modification (Fig. 2, not shown) two separate transformers having their secondaries in series may be substituted for the divided transformer T<1>. In order to facilitate amplification the amplifiers mav be arranged asymmetrically so as to produce harmonics, one of which may be selected and subjected to further similar stages of frequency multiplication. The transformers mav be provided with earthed screens and their cores mav be " enlivened " by the application of auxiliary alternating magnetomotive force.
Patent GB-630182-A (GB)
Title: Improvements in or relating to the preparation of silica
IPC: C01B33/18
Filed: 1947-12-10
Abstract: Finely-divided silica, suitable as a filler for rubber and plastics and in the production of fluorescent materials, is produced from the silica by-product obtained in the acid treatment of ores containing fluorine and silicates by heating the by-product to a temperature above 600 DEG  C.ALSO:Finely divided silica, produced by heating to a temperature above 600 DEG  C. the silica by-product obtained in the acid treatment of ores containing fluorine and silicates, is suitable as a filler for rubber.
Patent GB-1135572-A (GB)
Title: Hydraulic devices for retarding of wheeled vehicles
Inventor: CHECKLEY PETER EDWARD
IPC: B61K7/00
Filed: 1965-07-30
Abstract: 1,135,572. Track brakes. DOWTY MINING EQUIPMENT Ltd. 22 July, 1966 [30 July, 1965], No. 32684/65. Heading F2E. In a telescopic hydraulic retarder device for fixing adjacent a track including a piston 12, which is depressible by the wheels of a passing rail vehicle into a fixed cylinder 11 and forms a variable volume hydraulic chamber 14 therewith, and a pressure responsive valve 24 dis posed between said chamber and a lower pressure outlet 15, which valve re mains open when the pis ton is depressed by vehides running at low speeds but closes under the pressure differential developed across it when the piston is depressed by vehicles exceeding a predetermined speed whereupon flow takes place through a high pressure valve 31, said valve 24 comprises a valve housing formed by larger and smaller coaxial bores 17 and 18 in the piston walls and a movable annular valve member 24, which is urged to the open position shown by a spring 34 and has a flange 25 engageable with the smaller bore to close communication between the chamber 14 and fluid outlet 15. A high pressure piston relief valve 31 is contained by the annular valve member and is spring-urged with the latter against a stop 37. On depression of the piston by a vehicle wheel moving below a predetermined speed, flow from chamber 14 takes place past flange 25 and ports 23 to outlet 15. On depression of the piston by a vehicle wheel moving in excess of said predetermined speed, the pressure drop across the valve causes the flange 25 to move into the bore 18 to close off chamber 14 from the outlet. Further discharge of fluid may then take place through piston valve 31 which is lifted by fluid pressure.
Patent GB-489366-A (GB)
Title: Improvements in or relating to photographic sound records of the variable area type
IPC: G11B7/00
Filed: 1937-01-28
Abstract: 489,366. Optical sound records. ELLIS, L. S. E. (Klangfilm Ges.) Jan. 28, 1937, No. 32686/36. [A Specification was laid open to inspection under Sect. 91 of the Acts, May 31, 1937.] [Class 40 (ii)] A photographic linear sound-record of the variable area type is provided with additional side tracks which are respectively duplicates of the oppositely disposed edge parts of the main linear track, so that no distortion results from maladjustment between the linear track and the reproducing slot, any part of one edge of the main track lost by one end of the slot being made up by the corresponding part of the additional track spanned by the other end of the slot. The main track may be a single hump track M, Fig. 3, in which case the additional edge tracks are partial tracks R1, R2. Or the main track and the additional edge tracks may be multiple tracks obtained by a multi-toothed screen. As shown in Fig. 1 a screen a with notches of varying depths is designed for linear reproduction over a span corresponding to a reproducing slot e. The outer parts of the screen co-operate with the ends of the longer recording slot d to produce the additional edge tracks. The width of each of the edge tracks should not exceed about 15 per cent of the width of the main track. Specification 421,020 is referred to.
Patent GB-521204-A (GB)
Title: Improvements in trailers for motor vehicles
IPC: B60K3/00
Filed: 1938-11-10
Abstract: 521,204. Storing gases unaer pressure. MAINA, J. Nov. 10, 1938, No. 32712. [Class 8 (ii)] A trailer vehicle for use with a motor vehicle carries an engine 8 and compressor 9 and gas storage cylinders 6, 7, so that gas drawn from a suitable service connection may be compressed i ito the cylinders for use as fuel in the internal - combustion engine of the towing vehicle. In the construction shown there are three high compression cylinders 6 and two low compression cylinders 7. Gas is supplied to the towing vehicle through a reducing valve and expansion chamber 14 and a flexible pipe 12. The trailer is connected to the towing vehicle by a drawbar 11, and has a cradle or frame 1 supported by a transverse spring 3 or two wheels 4. A cowling or cover 10 is provided for the trailer.
Patent GB-1002215-A (GB)
Title: Improvements in or relating to dispensers for sheet materials
Inventor: MCKEE WILLIAM ROBERT HUNTER
IPC: A47K10/42
Filed: 1963-08-19
Abstract: 1,002,215. Dispensing cartons. INVERESK PAPER PRODUCTS Ltd. June 12, 1964 [Aug. 19, 1963], No. 32760/63. Heading B8P. A dispenser for tissues has a removable portion 12 to provide a dispensing aperture defined by lines of weakness 11 and extending at least partially across the upper face 1 and into a side wall 2, the portion 12 being removed by a pull tab 17 extending from the portion 12 and terminating at an edge of the receptacle. The dispenser is made from a single paperboard blank comprising interhinged panels. The dispenser may be placed in an outer plastics cover.
Patent GB-1223459-A (GB)
Title: Hydrotherapy apparatus
Inventor: JACUZZI RODOLFO
IPC: A61H33/00
Filed: 1968-07-10
Abstract: 1,223,459. Jet pumps; centrifugal pumps. EVEREST & JENNINGS Inc. July 10, 1968, No.32797/68 Headings F1C and F1E. [Also in Division A4] Hydrotherapy apparatus for producing a highpressure jet of water mixed with air comprises a nozzle 56 adjustable in direction and supplied with water under pressure by a pump 11, in the portable embodiment shown, or by a pipe, in an embodiment attached to the side of a swimming pool Fig.4  (not shown), the water flow rate being controlled by a valve 38 operated by a knob 36, and air being induced through a pipe 53 and passage 54 at a rate controlled by rotatable plug 67 having a facing 68 controlling air inlet 66. As shown, the nozzle assembly 42 is rotatable in a sleeve 41, and nozzle 56 is universally movable in socket 59. The pump comprises an impeller 24 in a volute chamber 21 with a tangential outlet 22. A rubber footing 18 supports the apparatus on the bottom of the bath in which it is to operate, water entering the pump via a filter 29 and apertures 28 and 23. The driving motor casing 27 is buoyant, and operates the motor switch when immersed. In another embodiment, Figs. 5 to 7 (not shown), the apparatus is mounted on a stand for rotation about a vertical axis, and the movement of the nozzle in its socket is limited to movement about a horizontal axis.
Patent GB-281716-A (GB)
Title: Improvements in or relating to signalling devices for automobiles or other vehicles
IPC: B60Q5/00
Filed: 1927-12-05
Abstract: 281,716. Perrier, A., and Epercieux, M. Dec. 4, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Retractive switches. - Electric devices for giving audible and directional signals on roadvehicles are actuated by two rings B, C mounted concentrically with the steering wheel. Depression of the ring B against the resistance of springs 4 mounted on bolts 3 forces contacts b against a member A and completes the circuit for the horn or like device M, M'. Dcpression of the similarly mounted ring C and its contacts c completes the circuit for the relay H, the armature E of which is moved to connect the terminals F, G and so completes the circuit for the signal lights and for an auxiliary sign. At the same time contact with a terminal D is broken and the left-hand sign or light is darkened, leaving the right-hand one illuminated.
Patent GB-1370604-A (GB)
Title: Circular knitting machines
IPC: D04B15/94
Filed: 1973-07-10
Abstract: 1370604 Knitting-machines BILLI SpA 10 July 1973 32832/73 Heading D1C [Also in Division F2] In a circular machine the drive between the needle cylinder and a program cam drum includes a clutch comprising a series of rollers which can be wedged between the cylindrical surface of a drive member and flats on the surface of a driven member housed within the drive member.
Patent GB-1454272-A (GB)
Title: Apparatus for monitoring airport runway lights
IPC: G01J1/42
Filed: 1973-07-10
Abstract: 1454272 Monitoring airport runway lighting DEFENCE SECRETARY OF STATE FOR 8 July 1974 [10 July 1973] 32904/73 Heading G1A Apparatus for monitoring airport runway lights comprises a plurality of detectors 1 each responsive to light incident from essentially one direction, means 6 for detecting when the apparatus passes a light fitting, means 10, 8, 12 to determine when the apparatus has travelled a predetermined distance from it and connected to means 5, recording the outputs from detectors 1 at that time. Detectors 1 each in a narrow black painted box are aligned to receive light from ground level 15 m behind the apparatus. Six panel meters 3 are in three-by-two array in light excluding box 4. Wheel 10 provides pulses to counter 8 giving an output corresponding to distance travelled. At 15 metres, selector 12 provides a signal causing camera 15 to photograph meters 3. Inductive pick-up loop 6 and circuit 7 produce a pulse on passing a light fitting which resets counter 8, provided that the distance indicated to inhibitor 9 by counter 8 is greater than the distance set on selector 11. More than one vertical array of detectors 1 can be used.
Patent GB-1032767-A (GB)
Title: Improvements in or relating to control systems for liquid-fuel supply for engines
Inventor: TURNER HORACE GEORGE
IPC: F02C9/40
Filed: 1961-09-14
Abstract: 1,032,767. Gas turbine engine fuel systems. PLESSEY CO. Ltd. Sept. 14, 1962 [Sept. 14, 1961], No. 32948/61. Heading F1G. [Also in Division G3] A fuel supply system for a jet propulsion engine comprises an engine-driven, centrifugal backing pump 2 feeding a positive-displacement pump 3 which discharges through a metering valve 6, overspeed spill-valve 27, and combined shut-off and dump valve 31 to a pilot burner passage 33 and, through a pressurizing valve 38, to a main burner passage 34. The metering valve is adjusted in response to the difference between compressor inlet and delivery pressures admitted at 9, 10 respectively and is subject also to control by a vent valve 13 adjusted by jet pipe temperature. A plunger 15 constituting a spill valve between the pump 3 and the metering valve is subject on its upper end to pressure upstream of the metering valve and on its lower end to pressure in a chamber 18 which is connected through a restriction 17 with the downstream side of the metering valve and also through a passage 19 with a leak-off valve 20 mounted on an engine driven shaft 24 so as to be responsive to centrifugal force. Thus the plunger 15 maintains a constant pressure difference across the metering valve 20 when the engine reaches a speed determined by a lever 26 acting through a cam 22 on a follower 23 on which the valve 20 is carried by a spring blade 21. Gearing by which the shaft 24 and the flyweights for the overspeed valve 27 are driven also rotates the plunger 15 and the metering valve to reduce friction. To minimise leakage from the chamber 18 when the plunger 15 becomes worn an annular chamber 38 connected to the upstream or, as shown, to the downstream side of the metering valve is interposed between the chamber 18 and the region 30 of low pressure containing the gearing.
Patent GB-1345439-A (GB)
Title: Manufacture of resin-impregnated cellulosic sheet materials
Inventor: OTSUKA M
IPC: D21H17/19
Filed: 1971-07-14
Abstract: 1345439 Laminates OTSUKA KAGAKU YAKUHIN KK 14 July 1971 [17 July 1970] 33025/71 Heading B5N A resin-impregnated laminate is made by interposing a sheet of a synthetic polymer between each pair of a plurality of cellulosic sheet materials, impregnating the resultant composite sheet with a polymerizable substance capable of dissolving or swelling said synthetic polymer, said polymerizable substance preferably being at least one vinyl monomer, an oligomer thereof or an unsaturated polyester dissolved in said vinyl monomer and then polymerizing the polymerizable substance, e.g. by heat or irradiation. The cellulosic sheet material may be corrugated board, cardboard, paper, woodboard, plywood, fibreboard, particle board or cotton fabrics. Suitable synthetic polymers are polyvinyl chloride, vinyl chloride/ vinylidene chloride copolymers, vinyl chloride/ vinyl acetate copolymers, polystyrene, styrene/ butadiene copolymer, polypropylene, ethylene/ vinyl acetate copolymers, polymethyl methacrylate, acrylonitrile/styrene copolymer and acrylonitrile/butadiene/styrene copolymers. The polymerizable substance is preferably impregnated in the composite sheet in an amount between 10 and 200 weight per cent and suitable vinyl monomers are styrene, vinyl acetate, acrylic acid, methyl acrylate, methacrylic acid, methyl methaerylate, acrylonitrile, vinyl chloride, vinylidene chloride, butadiene, isoprene, aryl chloride and aryl acetate. The composite sheet may be impregnated with a radical initiator and polymerization accelerator together with the polymerizable substance. These three components may be added in two or three steps, in each of which the composite sheet is impregnated with one or two of said three components. Impregnation may be effected by immersion or spraying and other additives such as foaming agents, flame proofing agents, anti-fungal or anti-septic agents, dyes, insecticides, water repellant agents and stabilizers may also be included in the applied composition. In an embodiment, polymerization is effected in two stages, e.g. by heating between pressure rolls or irradiation with gamma rays and then further heating between pressure rolls to complete the polymerization.
Patent GB-813307-A (GB)
Title: Transistor integrating circuits
IPC: G06G7/184
Filed: 1957-10-23
Abstract: 813,307. Electric analogue calculating systems. SPERRY RAND CORPORATION. Oct. 23, 1957 [Oct. 29, 1956], No. 33128/57. Class 37. [Also in Group XL (c)] An integrating circuit comprises a transistor having the input signal applied to one electrode and another electrode supplied with a bias potential which alternates between two different values, at one of which a capacitor charges through the transistor in accordance with the input signal and at the other of which the transistor short-circuits the capacitor. In the Figure, the input signal is applied through a resistor 18 to the emitter base circuit of transistor 5 so that when the input from a squarewave generator 14 to the base is positive a capacitor 12 charges at a rate dependent upon the input signal. Accordingly, the voltage across the capacitor represents the integral of the applied signal. The negative peaks of the square-wave periodically reduce the base voltage to zero or a slightly negative value so that the collector-base circuit conducts in the forward direction to rapidly discharge the capacitor. A bias circuit 6, 7 ensures that the capacitor does not discharge when the input signal falls to zero during the integrating period. The circuit will generate a saw-tooth wave if the bias is removed and a constant voltage source is connected to the input terminals (Fig. 1, not shown). In a further embodiment (Fig. 3, not shown), two integrating circuits are connected in parallel to the input and charge a common integrating capacitor in pushpull, the transistor in one circuit being of P.N.P. type and the other of N.P.N type so that both positive and negative signals are integrated and so that the effects of the standing currents balance out.
Patent GB-325477-A (GB)
Title: Improvements in variable speed gearing
IPC: F16H37/08
Filed: 1928-11-13
Abstract: 325,477. Shaw Infinitely Variable Gear Co., Ltd., and Shaw, J. S. Nov. 13,1928. Variabde-speed gearing comprises an epicyclic train controlled through auxiliary variable gearing and an automatic screw clutching-device D. Driving-shaft A carries a casing A<4> supporting planets A<1>, which mesh with a gear B' fast on driven shaft B and with a controlled gear C. Gear C is loose on shaft B and has a screwed boss C<1> outside casing A<4>. Upon boss C' is a screwed control sleeve D with a flange d<1> adapted to grip casing A<4> at A<5>. In order that the load shaft may be driven, gear C must be prevented from running forward freely. The screw thread is arranged so that if sleeve C' turns faster than sleeve D, the latter screws to the left and elements C, A<5>, d' are gripped frictionally, so that the gearing turns solid. Therefore gear C is allowed to turn only as fast as sleeve D turns, and the speed at which the load shaft B is driven is governed by the speed of sleeve D. Sleeve D is driven from shaft A through auxiliary variable gearing, the gearing described being of the interpenetrating disc type described in Specification 319,631. Epicyclic trains with stepped spur planets and with interengaging planets are described. An arrangement is described involving a gyrating wheel such as is described in the Specification referred to.
Patent GB-465620-A (GB)
Title: Improvements in sliding rail garment supports
IPC: A47F7/24
Filed: 1935-11-30
Abstract: 465,620. Garment - supports. PARNALL & CO., Ltd., G., and MURRAY, A. E. Nov. 30, 1935, No. 33237. [Class 52 (v)] A sliding rail garment support adapted to be projected from the front of a show case for the temporary accommodation of garments comprises a guide extending from the front to the back of the case and built up of two strips 8 of plywood separated by distancing strips 11 to form a longitudinal slot for a rail 13, the top and bottom of the slot being reinforced by brass strips 12 and the sides having slots 8a in which take pins 13a on the rail to limit the movement of the rail, which is provided with a handle 15 obscuring the front end of the guide in the retracted position.
Patent GB-447492-A (GB)
Title: Improved process for the production of formic acid
IPC: C07C51/10
Filed: 1934-11-19
Abstract: Formic acid is produced by reacting carbon monoxide and water at a pressure of at least 2,000 atmospheres, e.g. at 2,000--3,000 atmospheres and 175--250 DEG  C.  An excess of carbon monoxide is preferred, and catalysts such as hydrogen or metal halides, metal oxides, or non-volatile acidic oxides may be present in amounts of, e.g. 1--10 per cent by weight of the water.  In examples, a pressure vessel containing one-sixth of its volume of water is filled with carbon monoxide.  Pressures and temperatures specified are 3000 or 2000 atm. and 200 or 175 DEG  C.  Phosphotungstic acid equal to 10 per cent by weight of the water may be present.  After one or several hours, the vessel is cooled and the pressure released.  British Specifications 406,344 and 406,345, and U.S.A. Specification 1,895,238 are referred to.  According to the Provisional Specification, the pressure is at least 1000, e.g. 1000-5000 atmospheres.