baber/WOPTO huggingface dataset:
Patent GB-521018-A (GB)
Title: Improvements in and relating to rock and like drills
IPC: E21B3/025
Filed: 1938-11-09
Abstract: 521,018. Drilling-machines. HOLMAN BROS, Ltd., and RULE, J. Nov. 9, 1938, No. 32558. [Class 83 (iii)] A rotary rock drill, particularly one that employs a diamond core drill, has the spindle oscillated through an arc of about one revolution or less, and at the same time it is given an axial reciprocation or vibration to clear the drill. A fluid pressure motor 11 of the crescent shaped chamber type has its speed regulated by a throttle valve 11c centrifugally controlled at 13 through a rocker 13b. Drive is transmitted to the spindle from a balanced crank 15a through a rack and pinion 16 geared at 19 to the spindle which runs in ball bearings 20 and has a water supply to the drill at 19b. A cam on the end of the spindle, which is splined at 19c to the driving sleeve, engages a roller 24 screw-adjusted at 24b for the axial motion. The handles are in the form of bell cranks, the shorter arms 25b being held against an interposed cushioning washer by springs. This reduces the vibration caused by the longitudinal reciprocation.
Patent GB-955571-A (GB)
Title: Apparatus for spot welding panel structures
IPC: B23K11/00
Filed: 1961-09-12
Abstract: 955,571. Making doors; welding by pressure. BRITISH FEDERAL WELDER & MACHINE CO. Ltd., and T. F. TRIBE. Sept. 12, 1961 [Sept. 12, 1960; Sept. 20, 1960], No.32684/61. Headings B3A and B3R. An apparatus for spot-welding panels 24 to a rectangular frame 21 comprises a row of spot-welding heads 33, means for carrying the assembled panels and frame between the electrodes and at right angles to the row and means movable to engage the frame to stop the assembly beneath the row in predetermined welding positions. A metal door comprises a frame 21 and cross-bars 22, 23 to which are spot-welded panels 24 along weld lines 25-32. The unwelded assembly of frame and panels is moved on support rollers 37 carried on frames 36, beneath a bridge 38 carrying a central set 58 of welding heads and two end sets 59, in the direction X to be stopped successively to allow the weld lines 25, 31, 32, 26 to be formed and in the direction Y after the assembly has been turned through 90 degrees to allow the weld lines 27, 29, 30, 28 to be formed. Roller assemblies 39 adapted to be raised or lowered by pneumatic rams are provided between the frames 36 for engagement with the assembly when moved in the direction X and transversely adjustable bars 45 are provided to locate the side frame members. Four pairs of pivoted stop fingers 48-51 actuated by hydraulic rams 52 to be raised and lowered in succession are provided to co-operate with the frame moving in the direction X, fingers 48 engaging the outer surface of frame 21, fingers 49 engaging cross-bar 23, shorter fingers 50 also engaging cross-bar 23 and fingers 51 engaging the inner surface of frame 21, and a similar set of hydraulically actuated fingers 53-56 are provided to co-operate with the frame moving in the direction Y. The welding heads comprise upper and lower electrodes operated by pneumatic jacks, the central set 58 and selected ones of the or both end sets are employed together, being simultaneously urged towards the work. Manual control means are provided for the stop fingers and for the rollers 39 but after manual selection control may be automatic.
Patent GB-680139-A (GB)
Title: Apparatus for recording discrete operations
Inventor: GRIME GEOFFREY
IPC: G01D9/16
Filed: 1949-12-21
Abstract: 680,139. Actuation of switches. NATIONAL RESEARCH DEVELOPMENT CORPORATION. March 21, 1951 [Dec. 21, 1949], No. 32735/49. Class 38 (v) [Also in Group XIX]. Pneumatic means for momentarily closing a circuit, for use in apparatus recording the number of vehicles passing (see Group XIX), comprises a rubber tube stretched across the road, closed at one end by a plug and at the other by a chamber 24 carrying a thin metal diaphragm 25, so that upon a vehicle passing over the tube a puff of air travels along the latter and deflects the diaphragm 25 to close contacts 26.
Patent GB-1196901-A (GB)
Title: Improvements in Ball Piston Hydrostatic Motors or Pumps
Inventor: FIRTH DONALD
IPC: F01B1/06
Filed: 1965-07-31
Abstract: 1,196,901. Reciprocating pumps and motors. NATIONAL RESEARCH DEVELOPMENT CORP. July 25, 1966 [July 31, 1965], No.32862/65. Heading F1A. A cam track for a linear or radial ball piston hydraulic pump or motor is profiled so that each half lobe produces a piston stroke comprising a period of constant acceleration, a period of constant velocity and a period of constant deceleration, the west of each lobe being shaped to give a smooth transition of ball velocity at each piston innner dead centre position from the period of deceleration to the period of acceleration, formulae being given for the derivation of the crest shape. The lobe is also grooved to receive the ball pistons, the depth of the groove increasing at the crests of the cam track. The arrangement of the pump or motor is such that each period of acceleration or deceleration of one ball is complemented by a period of deceleration or acceleration, respectively, of another ball. The cam track may also be shaped to provide a dwell period at each inner dead centre of the ball pistons.
Patent GB-1019750-A (GB)
Title: Manufacture of aromatic diamines
IPC: C07C209/36
Filed: 1964-08-12
Abstract: In a batch process for the manufacture of aromatic polyamines by the catalytic hydrogenation of the corresponding polynitro compounds in the presence of a solvent and a Raney nickel catalyst, the proportion of the catalyst is at least 15% by weight, based on the polynitro compound.  The hydrogenation may be effected at 65-120 DEG  C. under a pressure of 50-200 p.s.i.g. Methanol is the preferred solvent, but others are also specified. Examples are given of the manufacture of diaminotoluenes from dinitrotoluenes, and reference is made also to the reduction of dinitrobenzenes, dinitroxylenes, polynitrobiphenyl compounds, trinitrotoluene and di-, tri- and tetra-nitronaphthalenes.
Patent GB-520208-A (GB)
Title: Improvements in and relating to beehives
IPC: A01K47/00
Filed: 1938-11-12
Abstract: 520,208. Bee-keepers' appliances. COOK, J. R. Nov. 12, 1938, No: 32930. [Class 5 (ii)] Relates to means for controlling the passage of incoming bees into one or other of two brood chambers D, D<SP>1</SP>of separate hives, and consists in afloor board having recesses E, E<SP>1</SP>, E<SP>2</SP> , E<SP>3</SP> forming entrances and exits for the bees, the central recessed portion' of the floor being provided with a block B and levers A, A<SP>1</SP> or slides adapted to be moved to cause the bees entering the recesses E, E<SP>1</SP>to pass into either of the recessed portions C, C<SP>1</SP>at will. The passages are adapted to be closed by wedges W, W'. An overlay F having apertures corresponding to the recessed portions C, C<SP>1</SP>is placed over the floor, and supports the brood chambers D, D'.
Patent GB-849935-A (GB)
Title: Improvements in or relating to the treatment of thermo-plastic materials
IPC: B01J2/20
Filed: 1957-10-22
Abstract: 849,935. Pelletting machines. ABBEY, A. (Union Carbide Corporation). Oct. 21, 1958 [Oct. 22, 1957], No. 32990/57. Class 87(2). A method of making pellets from a thermoplastic material comprises extruding the molten material into a free space, cutting the extrusion into pellets whilst in said free space and causing or allowing the pellets to fall into a body of a cooling liquid maintained at a temperature below the softening point of the material. The free space be a gaseous region in which a spray or droplets of the cooling liquid may be present. The gases may be air, nitrogen, oxygen, argon &c. and may be at pressures above or below atmospheric. Molten material is extruded through the orifices 28 of a jacketted barrel 10, is cut by revolving blades 16 and falls as pellets into a water bath 20. The blades 16 may be cooled by sprays 22 or may dip in the water which may circulate.
Patent GB-432472-A (GB)
Title: A new or improved regulator for controlling the draught in a flue
IPC: F23N3/04
Filed: 1934-11-16
Abstract: 432,472. Draught - affecting fittings for chimneys &c. TRETHEWEY, W. B., The Yews, Boltro Road, Hayward's Heath, Sussex. Nov. 16, 1934, No. 33022. [Class 25] [See also Group XIII] An automatic regulator for maintaining a constant temperature in a flue 1 having an air inlet 3 comprises a thermostatic element 15 positioned in the path of the flue gases and a damper 4 hinged to the flue and operated by the thermostatic element so as to control both the inlet of air and the passage of flue gases. Preferably the thermostatic-element is of the kind described in Specification 432,471, the outer end of the thermostat spindle forming a crank arm 18 which is connected by a link 23 to a crank arm 8 on the damper spindle. A counterweight 10 tends to keep the damper in a position in which it closes the air inlet. The thermostatic element may be mounted in the flue wall as shown, or it may be mounted in a spider frame in the air inlet, and the damper is cut away or slotted to enable it to swing past the element.
Patent GB-1069333-A (GB)
Title: Apparatus for freeze-drying pulverulent materials
IPC: F26B5/06
Filed: 1965-08-03
Abstract: 1,069,333. Freeze-drying. NIRO ATOMIZER A.S. Aug. 3, 1965 [Aug. 6, 1964; July 29, 1965], No. 33097/65. Heading F4G. Apparatus for freeze-drying pulverulent material comprises a vacuum container 1 connected to a source of vacuum and condenser (not shown) and housing a filter 5 shaped as a cylinder into and from which the material is introduced and discharged via valved conduits 6, 8 respectively, and in which is mounted a rotary shaft 2 with ribs 3 for the passage of a heating medium. The heating shaft is rotated by a motor 4 which may also rotate the filter container 5 about its axis so that both the filter and heating shaft 2 agitate the material. In a modification, Fig. 2 (not shown), the filter is rotated but the hollow shaft 2 is used only for charging and discharging material and separate heating members are mounted outside the filter container. In a further modification, Fig. 3 (not shown) the filter comprises a number of tubular members inserted from the end of the vacuum container and defining a space for the material between the wall of the container and the filters. Heating members are attached to the outer walls of each filter member and a hollow shaft with blades is mounted centrally of the container for agitating, feeding and discharging the material.
Patent GB-1307457-A (GB)
Title: Method and apparatus for bending a sheet of glass
IPC: B29C33/02
Filed: 1971-07-14
Abstract: 1307457 Bending glass ASAHI GLASS CO Ltd 14 July 1971 [16 July 1970 (2)] 33120/71 Heading C1M Sheet glass is bent by locating a sheet of glass on a horizontally movable mould in the form of a curved open frame work, carrying the mould through a preheating zone of a furnace and into a main heating zone of a furnace having a grooved curved hearth bed 23 located below the mould, receiving the frame members 3, 4, 5, 6, 7, 8, 9 in respective grooves 13, 14, 15, 16, 17, 18, 19, 20, 21 and heating the glass to its deforming temperature so that it bends. As shown the mould may consist of orthogonal, longitudinal and transverse members with corresponding grooves in the hearth bed, the members being located in the grooves by lifting the hearth bed using rams 29 towards the mould. Alternatively (Figs. 5, 6, 7, 8, 9, not shown) the mould has longitudinal members only, the hearth bed in both the pre-heating and main heating zones having longitudinal grooves so that the members pass along the grooves in the pre-heating zone to reach the main heating zone. In either case the hearth bed may have holes 22 through which hot gas is ejected to heat the glass and to provide upthrust on the glass to reduce its deadweight and prevent it sagging between the members. Alternatively the holes may be omitted and the grooves be of such depth that the glass rests directly on the hearth bed which is then covered with fibre glass, asbestos cloth or carbon powder to prevent traces and flaws. In this case the glass is heated by burners located in the furnace roof. In each embodiment the mould is horizontally moved by rollers 24 acting on the guides 12 which support the mould.
Patent GB-1280474-A (GB)
Title: Copying process
Inventor: HUGHES JAMES
IPC: B41M5/20
Filed: 1968-07-11
Abstract: 1280474 Electrolytic copying sheets J HUGHES 17 June 1969 [11 July 1968] 33146/68 Heading D2B [Also in Division B6] An image is copied from an original sheet on to a copy sheet by forming localised areas of accessible metallic ions on a sheet (called the "activating" sheet), and transferring these ions to the copy sheet, where they catalyse or take part in a colour reaction to form an image. In the Examples: (1) copper foil or a laminated sheet of copper foil and paper, plastics sheet or metal foil is coated on a copper surface with polyvinyl cinnamate, sensitized with a cyanine dye; this sheet, in contact with a positive transparency, is exposed to light, and unexposed portions of the polyvinyl cinnamate washed off with a solvent, and then baked to harden the exposed areas; paper sheets are coated with a solution I of catechol, sodium chloride, thiourea, borax and citric acid in water, dried and moistened with a solution II of sodium chloride in methyl alcohol and water; the coated side of the paper sheet is put in contact with the image on the copper foil and a direct current passed between the copper foil and a stainless-steel platen on the other side of the paper sheet, or the paper sheet and foil passed between two stainless steel rollers with a potential applied between them; in modifications, a paper sheet is moistened with solution I to which methyl alcohol has been added, or solutions I and II are applied successively with or without intermediate drying; (2) a foil of ferrovanadium alloy or laminated sheet of that foil and paper, plastics or metal foil is coated with an antihalation layer, optionally dyed, of non- hardened photographic gelatin, then with a silver halide emulsion, which may be dyesensitized; this sheet is imaged by exposure in contact with a positive transparency, or through an optical system, and the emulsion developed with a tanning developer, and washed to remove unexposed areas of emulsion and the underlying anti-halation layer; copies are then formed as in Example 1, but using in place of solution I, a solution III of aniline sulphate, citric acid, and potassium chlorate in water to which is added a solutionof 8-hydroxyquinoline in N acetic acid. Reference is also made to colour reactions in which a polyhydric phenol, a hydroxynaphthaline, an aromatic amine or derivative, a heterocyclic compound or an anthraquinane derivative is oxidized, and the oxidation catalysed by the metallic ion.
Patent GB-1194768-A (GB)
Title: Automatic Drilling Device
Inventor: O'CONNER CHARLES AUGUSTUS
IPC: B23Q5/26
Filed: 1968-07-11
Abstract: 1,194,768. Drilling. C. A. O'CONNER. 11 July, 1968 [20 July, 1967], No. 33172/68. Heading B3C. A drill press, which may drill, peck or mill comprises a quill 15, which contains a drill supporting shaft 13 and is coupled to a rack 20 and pinion 18 for axial quill movement, a first piston 24 coupled to the rack and disposed in a cylinder 25 having electric solenoid operated valves 38, 40 for admitting compressed gas at each end, a second piston 22 coupled to the rack and disposed in a cylinder 23 having a conduit 30 for the transfer of liquid between its ends, an adjustable valve 31 in the conduit 30 for limiting the liquid flow, a sensing means 65 coupled between the quill and a workpiece supporting base 11 for determining the position of the bit and electrical connecting means between the sensing means and the solenoid operated valves 38, 40. As shown the conduit 30 includes a cut off valve 33 and a by-pass with an adjustable valve 32 to control the drill feed rate. In operation, the solenoids S2 and S4 are actuated to open the valve 33 and to supply pressure gas through the valve 40 to move the rack to the left, lowering the quill at a rate determined by the liquid flow through the valve 31, until a bore 68 of the also lowering sensing means 65 is closed by a rod 64 of a device 60 rigid with the quill housing 16. Then the air pressure rises in a passage 68 of the sensing means to operate a diaphragm valve 72 releasing the solenoid operated valve 33 so that the valve 32 controls the slower drilling feed rate of the drill. The  drilling continues until the sensing means 65 abuts a nut 63 of the device 60 when continued expansion of the piston/cylinder 24, 25 moves the cylinder 25 to the right expanding a pair of springs 54 until a microsewitch 55 is actuated to close the valve 40 and open the valve 38 to return the piston 24 and the drill to their starting positions, liquid passing through a by-pass  conduit (114) and non-return valve (29) (Fig. 6, not shown). For milling the quill is returned to its starting position by manual operation of a pushbutton. When pecking, a pecking switch is operated lifting a stop 52A for a rod 47 carried by the rack and opening the valve 40 to move the rack to the left when the rod 47 operates a microswitch 46 to start an adjustable timer 56. Lowering of the quill operates the sensing means valve 72 to close the valve 33 and slow the quill feed rate. Eventually the timer operates a switch to close the valve 40 and open the valve 38 to return the rack to the right until the sensing means 65 leaves the rod 64 when the valve 72 is normalized restarting the sequence. Once the rod 47 has closed the switch on each cycle it slides in the rack fixture 48 to a new position whereby the drill has a new starting point for drilling in each cycle. When the sensing means reaches the nut 63 the switch 55 releases the stop 52A to reset the rod 47 as the rack returns to the right.
Patent GB-1126609-A (GB)
Title: Spinneret
IPC: D01D4/02
Filed: 1967-07-19
Abstract: 1,126,609. Spinneret. E. I. DU PONT DE NEMOURS & CO. 19 July, 1967 [20 July, 1966], No. 33219/67. Heading C1M. [Also in Divisions B3 and B5] A spinneret for producing melt-spun filaments comprises: a face plate having at least one hole; an insert fitting into the hole and having at least one orifice, which may be of any cross-section or length; means to locate the insert horizontally and vertically in the hole; and a seal bonding the insert to the face plate. The face plate and insert may be of stainless steel, or the insert may be of glass or a ceramic material. The sealing compound may be glass, silver, silver solder, or aluminium sodium silicate, the melting point of the sealing compound being below that of the face plate or insert. In Fig. 1 a spinneret face plate 1 has a stepped hole 2. An insert 3 has an orifice 4, and is held in the horizontal position by its smaller diameter section 5, which fits into the minor bore hole 6. The insert is held in the vertical position by a shoulder 9 resting on a step 8 of the face plate. The larger diameter section 10 of the insert is smaller than the upper major bore 7, leaving an annular space 11, into which is introduced a suitable sealing compound such as a suspension of glass frit in water. Entry of the sealing compound into the orifice may be prevented by coating the top face 13 of the insert with a low melting sealing compound such as paraffin wax. Water from the suspension of frit is then evaporated and the assembly fired to fuse the frit and burn off the paraffin wax. The inserts may be easily removed from the bore by heating the assembly until the sealing compound melts.
Patent GB-1505312-A (GB)
Title: Apparatus for use in investigating specimens
IPC: G01N21/13
Filed: 1975-08-08
Abstract: 1505312 Optical investigations apparatus SOCIAL SERVICES SECRETARY OF STATE FOR 19 July 1976 [8 Aug 1975] 33250/75 Heading G1A Apparatus for optically investigating specimens comprises a turn-table 6 supporting a plurality of light transmissive sample vessels 15, means 14 for advancing the carrier stepwise, means for scanning the vessels 15 sequentially with each of a number of beams of radiation between the stepwise advances of the carrier and a plurality of detectors 9 (or 9') receiving the beams after interaction with samples in vessels 15 and producing an output signal dependent upon received light intensity. As shown, six sample vessels 15 are spaced around the periphery of carrier 6. The scanning means comprises six radial arms 17 mounted on rotor 3. Source 10 is mounted in the rotor tube and has six holes 7, lined up with arms 17 spaced around it. The beams from the source 10 reach the samples 15 via optics 8 and are detected by detectors 9 (for transmission measurements) or 9' (for fluorescence, scattering or turbidity measurements). In operation, the rotor assembly preferably rotates continuously and the carrier is stepped after the rotor has moved through at least 360 degrees. Filters may be provided at the detectors to permit spectral analysis or the results of several readings may be averaged. Several sources may be used and light fibres may transmit light from source to test object, the final beam being radially inwards or outwards. A computer is preferably used to calculate and co-ordinate the detector outputs.
Patent GB-1391711-A (GB)
Title: Digital signal decoder using two reference waves
IPC: G11B20/14
Filed: 1972-07-17
Abstract: 1391711 Decoding RCA CORPORATION 17 July 1972 [29 July 1971] 33362/72 Heading G4C A decoder for a data signal in which information is coded in delay modulation form (that is with a transition between bit cells representing a binary "0" and a transition at the middle of the cell representing a binary "1") or in modified delay modulation form (that is with some of the transitions representing a binary "0" omitted) includes demodulators 16, 18 (Fig. 1) receiving both the data signal A (Fig. 2) and reference signals E, F respectively, the signals E, F being square wave signals of half the frequency of the bit cells and phase displacemented at odd multiples of 45 degrees relative to the bit cells and a comparator 30 correlating the outputs of the demodulators to generate a NR2 output signal P. As described the signals E, F are derived from the data signal via a limiter 10 and automatic phase control unit 12, feeding a clock signal C to timer unit 14. The outputs of the demodulators are fed via low pass filters 20, 24 and limiters 22, 26 to, when the reference signals are at 45 and 135 degrees, an exclusive NOR comparator 30, the output of limiter 26 being delayed by half a bit cell. The comparator 30 is connected to a D type T<SP>2</SP>L flip-flop 32 receiving at its clock input a signal D derived from the timing unit 14. In the timing unit (Fig. 5) the outputs L, M of limiter 22 and delay 28 are fed both directly and via half bit delays 50, 52 to exclusive OR gates 54, 56 connected to a NAND gate 58. The output of the gate 58 is zero only when the data contains the sequence 101 and the phases of the reference signals D, E, F are wrong. The gate output and the clock signal C are fed via JK flip-flops 40, 60 to an exclusive OR gate 42 to, if necessary, change the phase of an output signal which is fed directly as the clock input to JK flip-flop 44 to provide the output signal E and via an inverter 46 to the clock inputs of flip-flop 32 (Fig. 1) and a JK flip-flop 48, receiving at its D input the signal E and deriving at its Q output the signal F.