baber/WOPTO huggingface dataset:
Patent GB-840463-A (GB)
Title: Improvements relating to disc brakes for vehicles
Inventor: DAVIS JOHN WALTER
IPC: F16D65/095
Filed: 1957-12-06
Abstract: 840,463. Disc brakes. GIRLING Ltd. Nov. 20, 1958 [Dec. 6, 1957], No. 37976/57. Class 103 (1). In a spot-type disc brake, different members of cylinders are provided in the limbs of the caliper housing on opposite sides of the brake disc; the sums of the cross-sectional areas of the cylinders on the two sides of the disc being such that the efforts applied to opposite sides of the disc are substantially balanced. In the embodiment shown in Figs. 1 and 3, there are two angularly spaced cylinders 21 in one limb of the caliper housing 13 and a single cylinder 18 of larger diameter in the other limb; the area of the single cylinder being equal to the sum of the areas of the other two. The above arrangement provides that the radial dimension of the central part of the caliper limb housing the larger number of cylinders may be substantially less than the corresponding dimension of the other limb and, conversely, the circumferential length of the central part of the caliper limb housing the smaller number of cylinders can be less than the corresponding dimension of the limb housing the larger number of cylinders (as may be seen in Fig. 3). Specifications 742,338 and 801,805 are referred to.
Patent GB-322119-A (GB)
Title: Improvements in strainers for liquids and other substances
IPC: B44D3/10
Filed: 1928-12-22
Abstract: 322,119. Garner, A. Dec. 22, 1928. Funnel strainers.-A split wire ring 8, one end of which is fixed to a cylindrical flange 6 on the body 1, the other end being bent to form a crank or handle 8<a>, is provided between a gauze straining element 5 and a supporting rib 7 on the flange in order to serve as means for ejecting the gauze from its operative position. The gauze 5 is provided with a ring frame 4 of spring or resilient material, the ring being split and its ends arranged to slightly overlap.
Patent GB-866177-A (GB)
Title: Improvements in and relating to under-mattresses
IPC: A47C23/06
Filed: 1959-11-10
Abstract: 866,177. Mattresses. SCHMUTZ, R. Nov. 10, 1959 [Nov. 20, 1958], No. 38138/59. Class 52(4). An under-mattress has upper and lower platelike surfaces 9, 9<SP>1</SP> and 5, 5<SP>1</SP> with pressure-elastic filling such as porous rubber forming edges 6 and strips 8 with strips 15 in the region of maximum loading. The upper surface has transverse slits 10 with cloth backing 12 to provide flexibility and ventilation; holes 14 with cloth backing 13 also provide ventilation. A transverse slit 16 divides the mattress into a body support and a head rest which can pivot about the axis of slit 16.
Patent GB-1141844-A (GB)
Title: Improvements relating to apparatus for drying material in strand or rope form
Inventor: REED WILLIAM CHARLES
IPC: A24B9/00
Filed: 1965-09-07
Abstract: 1,141,844. Drying material in long lengths. MICROWAVE INSTRUMENTS Ltd. 6 Sept., 1966 [7 Sept., 1965], No. 38151/65. Heading F4G. [Also in Division H5] Apparatus for heating or drying continuous strands or ropes comprises a hollow vertical waveguide 2 having upper and lower material inlets 14, air inlet and outlet pipes 20 and at least one wall which has an inwardly extending longitudinal ridge 4 of dielectric or metallic material adjacent the vertical path of movement of the material to produce in the path a concentration of microwave energy propagated through the waveguide. Two ridges are described comprising a pair of opposed planar faces, the profiles of which substantially conform to those of the material. The microwaves are generated by a klystron 8 in a first horizontal waveguide 6 opening into the waveguide 4 and a second horizontal waveguide section 10 houses a dummy load 12 to which is coupled a further waveguide housing a crystal detector 30 electrically connected to a unit 32 controlling the output of the microwave generator in dependence on the strength of the signal and hence the moisture content of the material passing through the waveguide 2.
Patent GB-1266917-A (GB)
IPC: F15D1/02
Filed: 1969-07-30
Abstract: 1,266,917. Regulating fluid-flow. NIHON KUKI SOCHI K.K. July 30, 1969 [Nov.30, 1968(2); May 27, 1969(2)], No.38180/69. Heading G3H. A duct is provided with a flow-rate equalizer comprising a partition 1 inclined across the flowpath and provided with one or more curved triangular cut away portions, see Figs.1A-C (not shown) having an area which decreases continuously in the downstream direction. Figs.4A, B, and 5A-F (not shown) illustrate a number of different radial partitions which are arranged in a circular duct. According to a further modification (not shown) the partition can be cylindrical.
Patent GB-321108-A (GB)
Title: Improvements in or relating to mechanically operated percussive tools
IPC: B25D11/06
Filed: 1928-12-28
Abstract: 321,108. Mickelsson, F. Dec. 28, 1928. Percussive hand tools. - A mechanical hand hammer comprises a rotating double-armed member 2 driven by a flexible shaft or a motor in the casing and adapted to project a steel ball 3 repeatedly against a block 5 which transmits the blows to a tool 6. For the purpose of reducing noise the member 2 is made of non-metallic material, such as vulcanized fibre.
Patent GB-362181-A (GB)
Title: Improvements in and relating to valve devices, more especially for the hose of motor spirit delivery pumps
IPC: F16K31/58
Filed: 1930-12-20
Abstract: 362,181. Dispensing liquids. LODER, J., 32, Backershagenhaan, Wassenaar, Holland. Dec. 20, 1930, No. 38468. [Class 116.] In a valve device particularly adapted for the delivery end of the hose of a-motor-spirit pump a valve member 6 is forced off its seat by a spring 14 and is arranged so that both hands are required to close it. In one form, a nozzle 2 is connected to the delivery hose and flow of fluid is arrested by pulling the valve member 6 provided with a leather gasket 7 on to a valve seat 5 by means of a handle 13 mounted on the valve stem 9. Leather protection rings 15, 16 are provided. In a modification, rotation of a knob causes a transverselyarranged eccentrically-disposed pin to close the valve.
Patent GB-345296-A (GB)
Title: Improvements in speed indicating and recording apparatus
IPC: G01P1/12
Filed: 1929-12-16
Abstract: 345,296. Indicating and recording speed. FAY, M. A., 1, Rue Picot, Paris. Dec. 16, 1929, No. 38485. Convention date, Dec. 15, 1928. [Class 106 (iv).] The spindle X is operated through fluid pressure means to be rotated through an angle which is a measure of the speed and has secured to it two discs D and E, one D carrying a lens H co-operating with a light source L and arcuate slot O to make a record on a clock-driven film F, and the other E having an arcuate slot K co-operating with the light source L and arcuate slot O<1> to vary the selenium resistance R and thus produce an indication in the ammeter I which is a measure of the speed. When used on an aeroplane approach of its speed to some predeterminded speed such as the stalling speed is signalled to the pilot by the pointer of the ammeter making contact with the adjustable sliding contact J to actuate the relay P, Q and thus the sound alarm T.
Patent GB-822507-A (GB)
Title: Improvements relating to electrical insulating material
Inventor: SNADOW RONALD
IPC: H01B3/48
Filed: 1956-12-18
Abstract: 822,507. Impregnating wood for electric insulation. BRITISH THOMSON-HOUSTON CO. Ltd. Dec. 17, 1957 [Dec. 18, 1956], No. 38561/56. Class 140. [Also in Group XXXV] Wood is treated to render it satisfactory for use as an electrical insulating material by impregnating it in vacuo with a solution which comprises a tung oil-modified xylenol-formaldehyde resin in a solvent (e.g. xylene) and heating to remove the solvent and harden the varnish. The vacuum-impregnated wood may be subjected to pressure while still immersed in the varnish. The wood may be washed in a solvent to remove superficial varnish, after impregnation but before heating. The wood may be rock maple, birch or beech. Wooden slot wedges for dynamo-electric machines may be impregnated by the method of the invention. In an example such wedges are first impregnated, then washed in xylene and allowed to drain, then fitted into the stator of an induction motor. The whole stator is then immersed in the same type of varnish, withdrawn and baked.
Patent GB-1003867-A (GB)
Title: Improvements in or relating to compressed air operated installations
IPC: F04B39/06
Filed: 1963-10-02
Abstract: 1,003,867. Compressed air circuits. ROBERT BOSCH G.m.b.H. Oct. 2, 1963 [Oct. 3, 1962], No. 38774/63. Heading F1N. Antifreeze vapour is entrained from a tank 28 Fig. 1, when ambient air is drawn through a filter 18, conduits 15, 151, 16 through a suction valve 21 into the inlet of a compressor 1, which delivers into a reservoir 5 through a conduit 4 containing a valve 7 serving to control air supply through a conduit 12 to a vehicle suspension device 13 and through a suction return conduit 14 leading back to the compressor inlet; the valve 21 being open only during starting of the compressor or in the event of leakage in the circuit. Antifreeze vapour passes through a nozzle 52, Fig. 4, set on the underside of the tank cover 27 and collects in an annular channel 50 between concentric seats 48, 49; Fig. 3, of the suction valve plate 54 which is held closed by a spring 56 except at low pressures in conduit 17 during starting. The tank cover 27 also carries a vent valve 25 through which residual pressure in conduit 14, 17 is relieved to atmosphere through a conduit 24, a union 19 and conduits 15, 18 when the compressor is stopped thereby ensuring the opening of the suction valve and consequent entrainment of antifreeze vapour during starting. The plate 36 of vent valve 25 is provided with a brake plate 38 in which are seated balls 42 engaging the walls of the valve bore 34 thereby ensuring silent venting.
Patent GB-1304749-A (GB)
IPC: D05B39/00
Filed: 1970-08-13
Abstract: 1304749 Sewing machines UNION SPECIAL MACHINE CO 13 Aug 1970 [14 Aug 1969] 38978/70 Heading DIG A work hold-down plate 107 for feeding workpieces along a work table surface to the stitching point of a sewing machine is carried by a laterally movable carriage 96 mounted on a longitudinally movable carriage 94, the carriages being moved by a cable 52 connected to a follower 55 mounted on the carriage 96 and moving in a slot 56 in a stationary plate 57, whereby the plate 107 moves over the table surface in a path defined by the contour of slot 56. The sewing machine motor 17 drives the sewing machine through a pulley 14 and through belts 23, 30, a reduction gear 34 the output of which drives, through an electromagnetic clutch, a pulley 40 to which cable 52 is attached. A second cable 66, attached to follower 55, is always maintained under tension by a pulley 65 urged in the clockwise direction by a compressed air motor 78. The clutch in the drive of pulley 40 is energised at 90v to move member 55 on its forward stroke against the pull of cable 66 and is energised at 17v for the retraction stroke by cable 66 to maintain cable 52 under slight tension. A compressed air motor 140 is energised to force a plastics button 141 against the top of the plate 107 during sewing and a compressed-air actuated piston rod 115a lifts the holder 107 away from the table at the end of sewing. An expanding pulley 28 is adjusted by a knob 31a to adjust the transmission ratio of the belt drive 30. The whole sewing cycle is controlled automatically by an electric circuit Fig. 11A (not shown) and is initiated by depression of a treadle 135. This deenergises motor 115 to allow plate 107 to drop down on to the work and energises motors 20, 140 to actuate the clutch lever 19 of main motor 17 and force the button 141 on to plate 107. Simultaneously clutch 38 is energised at the higher voltage to operate pulley 40 to move the carriages 94, 96, so that the plate 107 and workpiece moves in the predetermined path past the sewing needle 13. Near the end of stitching a photoelectric cell in the table is uncovered by plate 107 and is energised by a lamp 142 which starts a timer unit which, after  a predetermined interval to ensure completion of the stitching, deactuates clutch 19 to stop the sewing machine, deenergises motor 140 to raise the button 141, and reduces the voltage, to clutch 38 so that it reverts its slipping operation enabling return of the follower 55 and the carriage by the pulley 65. At full retraction carriage 94 opens a switch which energises motor 115 to lift the plate 107 for removal of the work. The plate 107 may include a pivoted sector (211), Fig. 16 (not shown), which is automatically moved aside prior to stitching to enable inspection of the workpiece and is automatically returned to its normal position before stitching commences.
Patent GB-1220900-A (GB)
Title: Measuring the beam landing characteristic of a shadow-mask cathode-ray tube
Inventor: OXENHAM JOHN KENNETH
IPC: H04N17/04
Filed: 1969-08-05
Abstract: 1,220,900. Testing cathode ray tubes. MULLARDLtd. Aug. 5, 1969, No. 39156/69. Heading G1A. In a method of measuring the beam landing characteristic of a shadow mask colour display cathode ray tube a detector arrangement, for light radiation resulting from electron excitation of a particular luminescent material present in the form of phosphor dots on the screen is positioned in the path of the radiation from a part of the screen area and in order to be substantially insensitive to light radiation resulting from the electron excitation of other screen areas may include a filter; a tube gun corresponding to the particular material is caused to emit an electron beam while the other beams are cut-off; the beam is scanned over the part of the area; a magnetic field is applied to the tube for purity correction in a given direction and its value is stepped between two values for different periods of the scan, the difference in values being such as to give a beam deflection between one value and the other in the order of the diameter of a dot of the luminescent material or the diameter of the spot formed by incidence of the electron beam on the screen, whichever is greater; the D.C. level of the purity field is adjusted so that the detector gives substantially the same output for each of said values and its value is a measure of the initial beam mislanding in the said direction. The same arrangement may be applied to obtaining a measure of the mislanding in a second direction which may be perpendicular to the first. Suitable stepped waveforms are exemplified and a commutator circuit in which they are developed and applied to the tube is described.
Patent GB-1380540-A (GB)
Title: Hydraulic control device for building up variable pressure in  clutches or brakes acting as shift elements in a gearbox adapted  to be shifted under load
IPC: B60K23/02
Filed: 1973-08-20
Abstract: 1380540 Change-speed control ZAHNRADFABRIK FRIEDRICHSHAFEN AG 20 Aug 1973 [8 Sept 1972] 39210/73 Addition to 1234745 Heading F2D In an hydraulic gear shift control as described in Specification 1,234,745 means are provided whereby when a 2-3 shift valve 90 is moved to the right to transmit pressure medium from a conduit 213 to a conduit 404 to engage a third gear clutch K2 a second gear brake or clutch B1 is rapidly exhausted. This is effected in the embodiment shown by lands on the shift valve 90 controlling ports 102, 103, 104. When second gear is engaged the brake or clutch B1 is pressurized from the valve 150 through ports 156, 157, a conduit 403, ports 102, 103 and conduit 401, and when the shift valve 90 is actuated by governor pressure admitted through a passage 241, the port 102 is closed and the conduit 401 is exhausted through the port 104. In another embodiment, the connection between the valve 150 and the brake or clutch B1 is through a separate piston valve which interrupts such connection and opens a vent in response to pressure in the conduit leading to the clutch K2.
Patent GB-1477898-A (GB)
Title: Catalyst for oxidising methanol to formaldehyde its preparation and use
IPC: C07C47/052
Filed: 1974-09-09
Abstract: 1477898 Formaldehyde INSTITUT FRANCAIS DU PETROLE 9 Sept 1974 [12 Sept 1973] 39289/74 Heading C2C [Also in Division B1] Formaldehyde is produced by oxidation of methanol with molecular oxygen in the presence of a catalyst formed by impregnation of a carrier with a water/C 2 -C 12  alkanolamine solution of molybdenum and iron-containing gels of particular origin (see Division B1) and then calcining. The catalyst may further contain one or more of Cr, W, Mn, V, U, Sc, Y, the rare earths, Co or Ni.
Patent GB-933076-A (GB)
Title: Packaging machine
IPC: B65B13/02
Filed: 1960-11-16
Abstract: 933,076. Packaging-machines. METAVERPA N.V. Nov. 16, 1960 [Nov. 25, 1959], No. 39380/60. Class 94(1). A packaging machine for tying a package with wire or tape comprises a work table 1 having rollers 3, set obliquely to the line of travel of the packages in order to guide them against a rail 4, and an abutment 6 which when moved by the forward edge of a package 11 operates tying mechanism in a frame 5, the tying operation causing the package 11 to be disengaged from the abutment 6. Subsequent abutments, e.g. 13, are set successively further inwards of the machine. The abutments 6 and 13 are on a bar 7 having an arm 9 which operates a switch 10 as the bar is moved forward, a spring 12 retracting the bar when the package 11 is disengaged. The rollers 3 are automatically retracted while the package is tied.
Patent GB-1162099-A (GB)
Title: Rotary Impact Breaker
IPC: B02C4/30
Filed: 1966-09-05
Abstract: 1,162,099. Impact breakers. STAMICARBON N.V. 5 Sept., 1966 1[4 Sept., 1965; 24 Sept., 1965], No. 39637/66. Headings B2A. [Also in Division P21 ' In an impact breaker of the type in which a driven rotary breaker is 'mounted on a supporting structure permitting a stream of material to ibe broken to be fed under the breaker body by a conveyor, the <SP>i</SP>breaker body being formed so that it subjects the material to impact forces as the material passes beneath such body, the breaker body 2 is moun'ted on a shiafit I rotatable in bearings in a carrier 4, the bearings being supported by shock absorters so as to be displaceable in the carrier under iimipaot reaction forces. The shock absorbers may comprise Spring-influenced valves 20, 22 and rape pre-loaded by ,springs 19 to prevent upward displacement of the shaft 1 under reaction forces below a certain value. Retuirn downward movements of the bearings are cushioned by Belleville washers 5. The carrier may be fixed or, as shown, connected to a horizontal shaft 9 so that it can hinge upwardly relative to a conveyor 10 which conveys the material to be broken. The breaker body comprises a single impact tooth 3 and is driven from a motor 14 via a rope and pulley transmission incorporating a slip coupling 12. In a modification, the shock absorbers are hydraulic piston-cylinder units (8, 9) Figs. 4 and 4 (not shown) which are linked into a common hydraulic system and maintain the breaker body shaft substantially hornzontal when it is upwardly displaced by reaction forces acting assymetrically on the breaker body. The driving motor (10) Fig. 3 (not shown for the breaker body is mounted on a hydraulic piston-cylinder unit (12) Figs. 4 and 5 (not shown) which is also linked in the common hydraulic system so that an upward displacement of the bearings in the carrier (1) Fig. 3 (not shown) is accompanied by a corresponding upwardly displacement of the motor (10). Specification 1,083,342 is referred to. '
Patent GB-924810-A (GB)
Title: Method of producing flanged compound bearings from clad metal blanks
IPC: B23K20/227
Filed: 1961-11-06
Abstract: 924,810. Making, flanged bearings. K. SCHMIDT G.m.b.H. Nov. 6, 1961 [Nov. 22, 1960], No.39674/61. Class 83 (2). A method of making flanged compound bearings, Fig. 4, from clad metal blanks, preferably comprising a steel base d and a light metal, e.g. aluminium alloy wearing surface comprises rolling a strip of wearing surface metal on to the steel base across the rolling direction of the base without deforming same, cutting clad blanks f from the clad strip e so that the greatest dimension of the blank is across the grain of the rolled steel and flanging the blanks so that the edges of the resultant bushes are perpendicular to the rolling direction of the steel base.
Patent GB-1359750-A (GB)
Title: Heat sink mounting for the power semi-conductors in a solid state
IPC: H02P7/29
Filed: 1972-08-29
Abstract: 1359750 Control of D.C. motors SQUARE D CO 29 Aug 1972 [6 Oct 1971] 39969/72 Heading H2J In a chopper control system for a battery operated vehicle, the anodes of the main, and quenching, silicon controlled rectifiers SR1, SR2, the anodes of freewheeling, and plugging, diodes D4, D3, and the cathode of the commutating capacitor charging circuit diode D1 are connected to studs threaded into a single metal heat sink HS4. Rectifier SR1 is triggered "ON" at constant time intervals, SR2 being triggered a variable time thereafter, controlled by the setting of potentiometer 36, to quench SR1, capacitor C having been charged by means of saturable transformer TP-TS, via D1 and SCR1, so that lead 38 is negative to lead 14 during conduction phases of SR1. Circuit D2-R provides a path for the current induced in TS at the commutating off of SR1. Electromagnetically operated reversing switch 10 controls the sense of series field excitation for forward or reverse motion, or reverses it for plugging operation providing vehicle braking. In the prior art circuit of Fig. 1 (not shown), the controlled rectifiers each have separate heat sinks (HS1, HS2), the latter being shared by diode D1, and the freewheeling and plugging diodes share a further heat sink (HS3). Heat sink HS4 in area is less than the sum of the areas of the three heat sinks (HS1-HS3) since the components mounted on HS4 do not all carry maximum current at once. The heat sink HS4 may support all the control system components, and is insulated from the vehicle frame.
Patent GB-1485227-A (GB)
Title: Production of fluoride-free phosphates
IPC: C01B25/18
Filed: 1975-10-01
Abstract: 1485227 Fluoride-free phosphates PENNZOIL CO 1 Oct 1975 [7 Oct 1974 29 Aug 1975] 40089/75 Heading C1A Phosphate rock is reacted at 70-95 C. with a solution of phosphoric acid containing alkali metal ions using sufficient phosphoric acid to solubilize completely the calcium phosphates present and sufficient alkali metal ions to cause fluorides present in the rock to precipitate as alkali metal fluosilicate and form a slurry in a solution of monocalcium phosphate and phosphoric acid, separating the solid alkali metal fluosilicate, and recovering a solution of monocalcium phosphate in phosphoric acid.