baber/WOPTO huggingface dataset:
Patent GB-648494-A (GB)
Title: Improvements in or relating to the production of ferric oxide
IPC: C01G49/06
Filed: 1948-08-06
Abstract: g -Ferric oxide in finely-divided powder form is produced by heating finely-divided iron oxalate or formate to below 600 DEG  C. in a substantially inert atmosphere, until the material is converted to ferroferric oxide, and then subjecting the product to controlled oxidation in air at a temperature below 350 DEG  C. e.g. 100-200 DEG C.  The inert atmosphere of the first operation may be steam, carbon dioxide or mixtures thereof with which a small amount of hydrogen or carbon monoxide may be present, a suitable mixture being that obtained by combustion of town gas.  The material may be damped with water in the oxidation operation.  The particle size of the iron formate or oxalate should be less than 1 micron diameter.  The product may be used in the formation of a magnetizable coating on recording tape.
Patent GB-944956-A (GB)
Title: Improvements in or relating to transistor amplifiers
IPC: H03F1/26
Filed: 1960-06-15
Abstract: 944,956. Parametric amplifiers. PHILIPS ELECTRICAL INDUSTRIES Ltd. June 15, 1960 [June 18, 1959], No. 21029/60. Heading H3B. A parametric amplifier utilises the non-linear internal capacitance between the base and collector electrodes of a transistor. As shown, a signal frequency source (2.6 mc/s.) is connected to the base and emitter electrodes of a transistor 2 and an auxiliary frequency (25 mc/s.) is applied over a tuned circuit 19 from a source 5 to the collector circuit. The difference frequency in the collector circuit (25-2.6 mc/s.) is absorbed by a tuned circuit 6, and the amplified signal is developed across a parallel circuit 3 tuned to 2.6 mc/s. and applied to output terminals 4. To obtain a higher band-width, the tuned circuit 6 may be shunted by a damped series-resonant circuit 25, 26, 27, Fig. 3A. It is stated that the signal frequency may be higher than the auxiliary frequency, in which case a further parallel-resonant circuit 30, Fig. 3B, is connected in series with the tuned circuit 6 and tuned to the difference between the auxiliary frequency and the resonant frequency of the circuit 6. The use of a separate auxiliary source may be avoided by providing a circuit tuned to the auxiliary frequency of 25 mc/s. at terminals 20. The transistor may as an alternative be connected in emitter arrangement.
Patent GB-666033-A (GB)
Title: Improvements in and relating to electric induction apparatus
IPC: H01F27/28
Filed: 1949-08-12
Abstract: 666,033. Electric filters. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 12, 1949 [Aug. 18, 1948], No. 21048/49. Class 40 (viii). [Also in Group XXXV] Apparatus such as a series filter for attenuating all frequencies except the one desired comprises a transformer unit having a wirewound primary winding 132 wound in two sections on the central leg 130 of a magnetic core 131, the two sections being connected in series with the centre tap earthed at 133. The secondary winding comprises two coils 136, 137, each formed of interleaved metal foil separated by dielectric strips,.so as to give a substantial capacitative impedance effect, each coil being in two sections which are connected in series. One each of the sections of the coils 136, 137 is positioned, one in the opening of, and one surrounding the primary winding 132. Two additional coils 138, 139 are constructed, each in two series connected sections similarly to the secondary winding to provide additional capacitative reactance and are positioned so that one section of each coil is within the opening of, and the other section of each coil is about the primary winding 132, the two sections of the coil 138 being farthest from, and the two sections of the coil 139 being nearest to the primary winding 132. The connections of the various windings and coils are such that additional capacitative reactance is incorporated in the circuit and a voltage doubling effect achieved, while the additional coils 138, 139 do not carry any of the current of the load connected to the secondary winding. The Specification includes a lengthy discussion with the aid of drawings on the construction and operation of apparatus constructed of metal foil and dielectric.
Patent GB-784012-A (GB)
Title: Improvements in or relating to preparation of shredded wood pulp
IPC: D21B1/06
Filed: 1955-07-20
Abstract: 784,012. Disintegrating wood pulp sheets. HERCULES POWDER CO. July 20, 1955, [Oct. 4, 1954], No. 21065/55. Class 96. [Also in Group IX] Wood pulp sheets 36 are fed by a variablespeed roller 44 and idler roller 46, to an anvil plate 42 which, with an upper clamping plate 50, is inclined upwardly, so that radial shearing faces of a shredding drum 22 shear and tear portions 36a from the sheets 36 and also split them in the plane of the sheets. Fan blades in the drum 22 assist in forcing air &c. through slots or grooves 34 to cool the shearing edges and prevent choking the drum 22. The plate 50 has guide fingers 50a extending backwardly through grooves in the roll 46. Shredded fragments are collected in a receptacle 54. Specification 463,437, [Group XXIII], is referred to.
Patent GB-715958-A (GB)
Title: Improvements in or relating to hot-blast stoves and the like
Inventor: LEITHE FRITZ
IPC: F28F21/04
Filed: 1951-09-08
Abstract: 715,958. Hot-blast stoves. OTTO & CO., GES., C. Sept. 8, 1952 [Sept. 8, 1951], No. 21218/51. Class 64(1) A hot-blast stove comprises a number of parrallel narrow combustion chambers 5 below a heat-retaining matrix 3, the bottom surface of each chamber being provided with a number of openings 13. 14 for the admission of gaseous combustion media. By making the combustion chamber tall and narrow, the intervening walls 4 are better able to support the matrix 3 which is composed of siliceous bricks, such as sillimanite. The base 8 of the stove contains ducts 9, 11, through which combustion gas and air pass, from external supply pipes 10, 12, these gases entering the chamber through the openings 13, 14. Intermediate arches 6 bridge the upper parts of the chambers 5, and a grating may be mounted immediately above, each floor - opening 13, 14 to ignite the incoming gases by its incandescence. Electrical ignition means may also be provided. Some of the exhaust-gas may be mixed with incoming air-for-combustion by the use of dampers 24, 22, 26 in the flue pipe 21 and air-inlet pipe 12. The operation of one or more of these dmapers may be controlled by means 30 responsive to pressure in the fuel-gas pipe or to the pressure-difference in the fuel-gas and air- .supply pipes.
Patent GB-1224216-A (GB)
Title: Method of and means for packaging and utilising water as a movable packaged supply
Inventor: STAUBER HANS JAKOB
IPC: B63B27/34
Filed: 1968-05-06
Abstract: 1,224,216. Gravitational discharge of a floating package of liquid. H. J. STAUBER. 6 May, 1968 [19 May, 1967], No. 21297/68. Heading B7A. A method of emptying a liquid mass from a collapsible container which is floating on a waterway consists in anchoring the floating container to a yoke at a discharge place on the waterway, connecting by a pipe the anchored container to a receiver and either raising one end of the anchored container relative to the receiver or, in the case of a tidal waterway, maintaining the container at a level above the receiver, so as to discharge the contents of the container into the receiver by gravity flow. In the method described, the receiver is an onshore reservoir at a lower level than the container which may be lifted at one end by a crane. The container may also be raised by floating a support underneath one end or an adjustable treadle may be floated under the container at high tide.
Patent GB-584411-A (GB)
Title: Improvements in typewriters and like machines
IPC: B41J7/02
Filed: 1944-11-02
Abstract: 584,411. Typewriters. PATEMAN, A. (Representative of ETHERIDGE, H.). Nov. 2, 1944, No. 21425. [Class 100 (iv)] In a typewriter having end thrust type bars, and weights associated with the bars and operating through toggles to complete the stroke of the type blocks or heads by momentum, each toggle has a fixed pivot and an arm thereof which is foldable. The upper and lower type bars 10, 11 respectively are hinged at the rear at 15 tb arms 16 pivoted at 17, and are also supported near the front by pivoted arms 20, 23 respectively. Depression of the keys operate push-rods 25, bell-crank levers 26 pivoted at 27, and cam levers 29 pivoted at 30, whereby cam faces 33 roll on faces 34 on the arms 16 to swing the type-bars forward against the action of springs 18. The forward movement of each type-bar is completed by the momentum of a swinging weight 35 which straightens toggle arms 36, 38. Each weight 35 is connected to the short arm 36 pivoted at 15 to the associated type-bar, and at 37 to the arm 39 which comprises two pivoted foldable arms, 38a, 38b. The arm 38b is pivoted on a fixed pivot 39 on an eccentric 49 which can be adjusted. The movement of the type-bars consequent on the depression of the keys straightens the arms 38a, 38b until the stops 42 thereon meet, and further forward movement is effected due to the arm 36 of the weight 35 swinging more into alignment with the arm 38a against the action of a spring 43 which extends between a lug on the weight and a point in the arm 38a. An arcuate guide comb 48 guides the front arms 20, 23, and a comb 31 guides each cam lever 29. The front arms 20, 23 are connected to the escapementmechanism.
Patent GB-978381-A (GB)
Title: Improvements relating to machines for planting bulbs and the like
Inventor: KEMP IVOR FREDERICK
IPC: A01C9/00
Filed: 1962-06-04
Abstract: 978,381. Planting bulbs. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Sept. 3, 1963 [June 4, 1962], No. 21499/62. Heading A1D. A machine for planting blubs comprises coulters 19 to which bulbs are fed which are arranged in two groups spaced apart in the fore-and-aft direction. Bulbs are fed from a supply crate 30 down shoots 31 to metering hoppers 32A, 32B, 32C each provided with a sloping floor 36 which is reciprocated to feed bulbs to a metering rocker 37 which is arranged to rock through about 90 degrees and is formed with a channel 38 large enough to receive a single row of bulbs, an adjustable agitating roller 39 ensuring an even flow of bulbs to the rocker. Bulbs in the channel 38 are tipped by the movement of the rocker 37 on to ramps 47 which carries half of the row to each endless band 50, which delivers the bulbs to the coulters 19.
Patent GB-224630-A (GB)
Title: Improvements in, or relating to, electric switches
IPC: H01H21/56
Filed: 1923-08-27
Abstract: 224,630. Preston, W., (trading as Sanders & Co., W.). Aug. 27, 1923. Switches, quick-break.-In switches of the type having a main blade and an auxiliary spark blade which when the switch is opened leaves the contacts with a quick action both blades, which engage the same fixed contacts, are pivoted on the same axis, the blades being superimposed and identical so that, in a two-way switch two blades only are necessary; one of them serves as the spark blade for one way and the other for the other way. As shown in Figs. 1, 4 and 6, identical superimposed blades a have semicircular fillets secured to the sides of each of them at the pivot end so that when the blades are together one fillet lies on either side of the two blades. The hole for the pivot passes through the centre of the fillets and through the inner edge, only of the blades as shown. The faces f are cut away as shown in Fig. 4 to permit of limited movement only of one blade with respect to the other, under the control of the spring h. The other ends of the blades are cut away so as to accommodate a switch-operating. member as described in Specification 225,602.
Patent GB-1320092-A (GB)
Title: Decorated packages
IPC: B65D75/26
Filed: 1971-04-19
Abstract: 1320092 Laminated containers AKERLUND & RAUSING AB 19 April 1971 [13 Feb 1970] 21583/71 Heading B5N [Also in Division B8] A method of making a receptacle 1 or a cover 2 therefore comprises providing a plastics layer 5 with a decorated surface 7, e.g. by printing, attaching this surface to another layer of plastics 6 by means of a bonding layer 8 and then deepdrawing the thus formed laminate. The decorated plastics layer is preferably ductile, e.g. polyethylene and is bonded to a more rigid material, e.g. polyvinylchloride or polyethylene. The laminate may be rendered gas tight by suitable selection of the bonding layer 8 or by inclusion of an extra layer, e.g. of polyvinylidenechloride. The receptacle 1 may be provided with flanges 3 adapted to provide a snap fit with lugs 4 of the cover 2.
Patent GB-597602-A (GB)
Title: Improvements in lamp shades
IPC: F21V1/00
Filed: 1945-08-23
Abstract: 597,602. Lampshades. REEVES, H. A. Aug. 23, 1945, No. 21600. [Class 75 (ii)] A shade consisting of a plurality of petallike panel elements 4, Fig. 2, or a plain disc 6, Fig. 7, having a straight or scalloped edge is mounted on a lamp bulb or its socket by one or more wire looped clips 1 secured by a screw 3 to clamping plates 7 arranged above and below the shade. The elements 4 may have radial, tangential or spiral edges which are hinged, stitched or stapled together. The clamping plates may be of star or spider form to deform the plain disc 6 to the fluted form shown.
Patent GB-639151-A (GB)
Title: Improvements in ploughs
IPC: A01B61/04
Filed: 1947-08-07
Abstract: 639,151. Agricultural implements. ABBEY, A. (Aktiebolaget Overums Bruk). Aug. 7, 1947, No. 21622. [Class 6 (i)] A plough comprises a share carried by a pivoted arm 3 and locked by a releasable spring-controlled catch which allows the share to swing backwards on encountering an obstacle. A catch surface 8 is formed in a rod 6 sliding in a bearing member 7 which pivots on a rib 16 engaging a groove in the plough frame 5. A spring 13 retains a stop 18 or rod 6 in position against the frame 5. The rod 6 is pivoted to a link 12 pivotally mounted on frame 5. In operation the catch is moved out of the path of arm 3 in a substantially tangential direction to said path against the action of the spring 13 or alternatively in a direction transverse to said tangential direction against the action of a second adjustable spring 15.
Patent GB-998512-A (GB)
Title: Energy absorbing device for use with a safety belt
IPC: B60R22/28
Filed: 1962-06-05
Abstract: 998,512. Safety-belts. E. A. I. JOHANSSON. June 5, 1962 [June 20, 1961], No. 21636/62. Heading A3V. [Also in Division F2] A safety belt is provided with an energyabsorbing device (see Division F2) consisting of a one-piece metal rod 1 comprising two coiled portions 5 which are connected to one another at one end at 6 and with an attachment member 3, the other end being connected integrally at a portion 4 to which the safety belt is attached. The geometrical axes of the coiled portions 5 are perpendicular to the direction of the stretching strain and an excessive force pulls the energy-absorbing device to an elongated position shown in Fig. 3 thereby dissipating the kinetic energy.
Patent GB-752166-A (GB)
Title: An improved method and means for attaching welts to footwear
IPC: A43B13/28
Filed: 1954-07-26
Abstract: 752,166. Sewing-machines. KEFERSTEIN, C. G. July 26, 1954 [July 31, 1953], No. 21773/54. Class 112. In attaching a welt to footwear of the kind which, during manufacture, have an inner sole 5 and an upper 6 assembled to provide a rib 4 projecting from the edge of the inner sole underface, the welt is sewn around the root of the rib by a lock-stitch sewing-machine, and the rib is supported on both sides during the sewing operation. As shown, the rib 4 and the edge 7 of the upper are gripped between a worksupport 35 and a presser-foot 25 while a weltstrip 30 is being sewn thereto. The worksupport is formed with a slot 40 giving passage to a work-piercing and feeding awl 21; and the welt-strip is fed through a guide 26 which is combined with the presser-foot and which folds over the lower edge of the strip so as to overlie the edge 7 and abut an extension 51 of the presser-foot.
Patent GB-574143-A (GB)
Title: Improvements relating to counting mechanism
IPC: G06M1/22
Filed: 1943-12-29
Abstract: 574,143. Counting-apparatus. LANDIS & GYR SOC. ANON. Dec. 29, 1943, No. 21785. Convention date, Jan. 28. [Class 106 (i)] The width of the numeral wheels of a counter can be made smaller than standard by viewing the wheels through a lenticular rod 3, Fig. 6, subdivided into magnifying fields. Fig.. 5 .shows the numbers 2 seen naturally, and at 3 through the lenticular rod. By using a rod, Fig. 10, magnifying both the width and the height, both dimensions of the wheels and therefore of the whole counting apparatus can be reduced.
Patent GB-140856-A (GB)
Title: Improvements in electric clocks
IPC: G04C1/08
Filed: 1918-12-30
Abstract: 140,856. Coventry Electric Clock Co., and Rushton, T. Dec. 30, 1918. Electric clocks.-Relates to clocks driven by a weighted lever which is lifted to act again by an electro-magnet. The weighted lever 7, with pawl 9 engaging the ratchet-wheel 11 on the first arbor 12, sinks and drives till the pawl is tripped by a stop 19, and then drops quickly into contact with an arm 4 which is upheld by a counter-arm 18 acting through a spring 6. With the weighted lever and the raised arm in contact, the circuit of an electro-magnet 1 is compreted, and the arm is turned into the horizontal position with the armature 2. The lever is thus thrown up from the stop 19, and the pawl is put again into engagement by a spring buffer 20. The circuit is, at the same time, broken by the onward travel of the lever, and the armature and attached arm are reset. During the action, the counter-arm 18 is applied as a brake to the wheel 13 by the spring 6. The contacts 5, 14 are carbon disks or carbon pins set in metal. In a modification, the armature is a coil on a counter-arm integral with the contact-arm, and the spring 6 connects the counter-arm to a fixed pin. In another modification, the contact-arm is upheld by the spring 6 only, and a non-reversal pawl overlying the ratchet-wheel taps it and also acts as a maintaining power while the weighted lever is reversing. The wheel 31 being loose on the arbor 42, a crank-pin 43 thereon normally urges the arbor round by acting on a radial pin 44, but a helical spring 42 keeps up the motion when the wheel is not driving.
Patent GB-648316-A (GB)
Title: Improvements in or relating to pump control systems
IPC: F04D27/02
Filed: 1947-08-08
Abstract: 648,316. Centrifugal and axial-flow pumps &c. ELECTROFLO METERS CO., Ltd. Aug. 8, 1947, No. 21829. Convention date, Sept. 25, 1944. [Class 110(i)] [Also in Group XXIX] Surging in a pump is prevented by a control system comprising a blow-off valve situated in the discharge conduit of the pump and regulated by means comprising a balance beam urged in one direction by means responsive to a pressure which is a function of the flow through the pump and in the opposite direction by means of a pressure which is a function of the pressure in the discharge conduit or of a pressure which is set to control the pressure in the discharge conduit, a governor for controlling the pump speed, means for creating a loading pressure and means for controlling the governor in accordance with the loading pressure. In one embodiment, Fig. 1, the flow in the discharge conduit 12 of an axial flow pump or compressor 10 is measured by a pitot tube 17, the upstream and downstream pressures being communicated through pipes 18 and 19 respectively to opposite sides of a diaphragm 22. The upstream pressure is also communicated to a chamber 33 closed by a bellows 34. The latter is connected to a pivoted lever 35 carrying a follower engaging a pivoted cam 37. An extension on the cam engages the end of a hollow tube 42 so as to restrict the discharge therefrom. The tube 42 is connected to and opens through the end of a bellows 43 closing a chamber 44. The latter is supplied with air under pressure from a pipe 46 by way of a pressure regulator 47 and an orifice 48. Movement of the cam 37 in response to variations in the pressure in pipe 18 causes variation of the restriction of the discharge end of the tube 42. The resultant variation in the pressure in chamber 44 is communicated through line 26 to one side of a diaphragm 25. A pivoted beam 23 under the joint control of diaphragms 22 and 25 thus takes up a position dependent on both flow and discharge pressure. The beam is connected by a link 27 or by a power relay mechanism to an adjustable bleed valve 28. The latter controls the supply of control fluid from a line 31 to a regulator 15 which actuates a blow-off valve 14 at the compressor discharge. In addition, the blow-off valve is opened by a governor 13 if the speed of the driving turbine exceeds a safe value. In the embodiment shown in Fig. 2, the blow-off valve 55 is actuated by a power unit 69 under the control of a weigh beam 68. The beam is jointly controlled by a diaphragm 71 sensitive through pipes 72 to the pressure drop across a flow-measuring restriction 73 in the inlet conduit 53 of the compressor 50 and by a diaphragm 67 supplied with loading pressure from a manually controlled pressure regulator 56. The governor 52 of the driving turbine 51 is controlled by fluid supplied through a nozzle 64 under the control of a weigh beam 59. The beam is jointly controlled by a diaphragm 58 exposed to the loading pressure through a pipe 57 and by a diaphragm 61 connected through a pipe 62 to the compressor discharge conduit 54.
Patent GB-1189787-A (GB)
Title: Apparatus for Filling Containers With Carbonated Beverages.
Inventor: CONNOLLY KEITH ROSS
IPC: B67C3/32
Filed: 1968-05-08
Abstract: 1,189,787. Filling casks. K. R. CONNOLLY. 8 May, 1968 [19 May, 1967], No. 21891/68. Heading B8T. Apparatus for filling containers with a carbonated beverage (e.g. beer) comprises a supply tank (not shown) of carbonated beverage maintained at a pressure greater than the equilibrium pressure of the gas in the beverage, a filling head 16, a beverage line 17 extending from the supply tank, a filling tube 21 extending from the beverage line, a gas line 18, an electric probe 19, and valves 22, 26 provided in the lines 18, 17 respectively, and connected to pneumatic cylinders 23, 28 respectively, and a base 6 for supporting a container 7, which can be lifted into sealing engagement with the filling head 16 by a pneumatic piston 5 and cylinder 4. The filling operation is controlled from a control box 25, which may be operated manually, in which the container is lifted into engagement with the filling head, the engagement actuating a control valve (32), Fig. 2 (not shown), to open valve 22 to pressurize the container until at a predetermined value a pressure switch (not shown) actuates a control valve (34) to open valve 26 to fill the container. When the level of the beverage touches the probe 19 a control valve (37) operates to close the valves 22, 26 and thereby open the pneumatic cylinder 4 to atmosphere to lower the container. A manual control valve (40) is provided for stopping the filling operation at any time. A pneumatically operated feed cylinder (47) may be provided for feeding empty containers to and discharging filled containers from the base 6, said cylinder being arranged to automatically trip a mechanically operated valve (48) to activate the control valve (32) thus rendering the apparatus automatic in operation, Fig. 3 (not shown).
Patent GB-222638-A (GB)
Title: Improvements in imitation jewelled buttons, studs, cuff links, tie pins and the like
IPC: A44B1/04
Filed: 1923-08-30
Abstract: 222,638. Messenger, T., and Messenger, H. Aug. 30, 1923. Ornamenting.-The metal surface of buttons, studs, cuff-links, tie-pins, &c. is ornamented in imitation of a jewelled setting by applying a coating of jewellers' enamel and cutting it when hard to represent a calibre-cut jewelled setting. The Figure shows one button of a cufflink having u strip of enamel applied around its edge and facetted to represent a number of separate jewels c, the centre d being filled in with a layer of pearl.