baber/WOPTO huggingface dataset:
Patent GB-1383917-A (GB)
Title: Containers
IPC: B65D21/06
Filed: 1971-10-13
Abstract: 1383917 Stackable and nestable trays GPG HOLDINGS Ltd 21 Nov 1972 [13 Oct 1971] 47644/71 Heading B8P A stackable and nestable tray having an open top and an open front includes a pair of opposite side walls 3, 4 which include at their front ends mutually converging upper portions 8, 9 and on their outer sides below the upper portions 8, 9, outwardly opening rebated portions 16, 17, 18. The tray is nestable with a similar tray by inserting the upper tray through the open front of the lower tray so that the upper portions 8a, 9a of the lower tray are accommodated in the rebates 16 of the upper tray. The tray is moulded from plastics material and the inner sides of the side walls are shaped completmentary to the rebated portions 16-18. These complementary shapes are accommodated in the rebates 17, 18, of an upper nested tray. The rebated portions 16-18 are of sawtooth section. When the trays are nested the bases are held in parallel spaced relationship by ribs 24 and studs 23 which project downwardly from the rear rim parts 14, 15 of the side walls and the upper portions 8, 9 respectively, engaging the side wall rear rim parts 14, 15 and in recesses or apertures 26 in the rims 10, 11 of the upper portions 8, 9, respectively, of a lower tray. The rims of the side walls include guiding grooves 10<SP>1</SP>, 11<SP>1</SP> and/or guiding ribs 14<SP>1</SP>, 15<SP>1</SP>. When the trays are stacked, keys (21, Fig. 2) associated with the bottoms of the rebated portions 16-18, engage in the recesses 26 and the rear of the tray base is supported on the rear rim of a rear wall 5 or on a pivotal bar 12.
Patent GB-1241704-A (GB)
Title: Graft polymerization of vinyl halide on an elastomer in the presence of a mercaptan
IPC: C08F279/02
Filed: 1968-10-10
Abstract: 1,241,704. Vinyl halide polymers. STAUFFER CHEMICAL CO. 10 Oct., 1968 [7 Nov., 1967], No. 48021/68. Heading C3G. A vinyl halide polymer is prepared by freeradical polymerization of a monomer composition containing at least 50% by weight of a monomer of formula wherein Z is hydrogen or halogen and Hal means halogen, in the presence of (1) an aliphatic mercaptan compound in an amount based on -SH equivalence of from 0.000075 to 0.05 equivalence -SH per mole of monomer in said monomer composition and (2) from 0.01 to 1% by weight based on the total weight of monomer in said composition of a polymerizable, organosolvent soluble, unsaturated diene elastomer. The diene elastomer is a natural or synthetic rubber containing at least 3 carbon-carbon double bonds per molecule. In Examples 1 to 13 and 19, vinyl chloride is polymerized in an aqueous suspension containing a styrene-butadiene copolymer and a blend of pentaerythritol tetra, tri, di and mono (3-mercaptopropionate)s. Similar processes are employed in the other examples, in which the mercaptan and diene elastomer are as follows: (14) trimethylolpropane tri(3-mercaptopropionate) and polybutadiene, (15) tetramercaptopentaerythritol and hydroxyl-terminated liquid polybutadiene, (16) 1,3,5-trimercaptocyclohexane and butadiene-acrylonitrile copolymer, (17) dipentaerythritol hexa(3-mercaptopropionate) and isobutylene-butadiene copolymer, and (18) polyvinyl thiol and styrene-butadiene-acrylonitrile copolymer.
Patent GB-1164868-A (GB)
Title: Centring Device for Hydrostatic Transmission Control
Inventor: CATUARA FRANK ROBERT
IPC: F16H61/42
Filed: 1967-10-23
Abstract: 1,164,868. Hydrostatic transmission control. INTERNATIONAL HARVESTER CO. 23 Oct., 1967, No. 48075/67. Heading F2D. In a reversible hydrostatic transmission comprising a reversible variable-displacement swash-plate pump (11), Fig. 1 (not shown), and a similar motor (13), in which the swashplate angles are adjusted by hydraulic servocylinders 24, 25 through known linkages 26, 27, (not further described) and the servo-cylinders are controlled by cam slots 33-36 in a camplate 31 fast on a shaft 19 carrying a pedal or hand lever 22, which slots 33-35 act to uncover exhaust valves 44, 45 in the servocylinders on rotation of the cam-plate on either side of a centre neutral position, the cam plate, and hence the transmission, is automatically returned to its neutral position on removing pressure from the lever 22 by a spring 52, which spring also provides a substantially constant resistive torque to movement of the lever 22 from any position away from the neutral centre position. Raising or lowering of the lever 22, for reverse or forward, from its neutral position, rotates the cam-plate 31 and one of two levers 46, 46a, freely mounted on the shaft 19, by the abutment of a stud 53, on the cam-plate, with a shoulder 51 or 51a on the respective lever, the other lever being held by a stop 54 engaging one end of a recess 50, 50a in the lever. The levers carry the spring 52 between their ends 49, 49a, so that, on release of the lever 22, the spring urges the rotated lever, and hence the cam-plate back to its neutral position. Also, rotation of one lever extends the spring to increase its tension, but also the line of action of the spring is moved nearer to the shaft reducing its effective lever arm, and maintaining its moment about the shaft 19 substantially constant. Rotation of the cam, and hence slots 33-36 controls the servo-cylinders to first increase the tilt angle of the pump swash-plate from minimum to maximum, and then to reduce the motor swash-plate angle from maximum to minimum. The servo-cylinders are pivoted at their lower ends, and the engagement of cam follower 55, on servo-cylinder 24, in camslot 36 facilitates control of the pump swashplate.
Patent GB-1048769-A (GB)
Title: Improvements in or relating to assemblies of electric switch units
IPC: H01H13/10
Filed: 1963-12-09
Abstract: 1,048,769. Make and break switches, mechanical. VITRAMON Inc. Dec. 9, 1963 [March 14, 1963], No. 48580/63. Heading H2B. A switch 10, mounted on a frame 12 so that its actuating member 21 is engaged at regular intervals by a rotating arm, has mounting lugs 17a, 17b at each end and the lower face 17c of the lug 17a is inclined to provide a fulcrum 28. The switch is raised or lowered about this fulcrum by an adjusting screw 27, the lower end of which engages in a recess 29 in the frame and this adjustment determines the extent to which the member 21 projects into the path of the rotating actuating arm and thus also the period during which the contacts are actuated. The rotary arm moves in a plane perpendicular to the drawing and the actual instant of engagement with the member 21 is adjusted by slight rotation of the switch body around the screw 27 by turning an eccentric bush 25, located in the lug 17a. The switch itself comprises a fixed contact 18 and a moving contact blade 19 which is normally held in the open position by a spring blade 20. When the latter is raised by inward movement of the rod 21 the blade 19 is allowed to engage the fixed contact 18
Patent GB-1100746-A (GB)
Title: Improvements in or relating to gas dispensing devices
IPC: F41H9/10
Filed: 1965-11-16
Abstract: 1,100,746. Gas dispenser. A. C. MINCHER, and G. C. J. KRAFFT. 16 Nov., 1965 [18 Nov., 1964], No. 48612/65. Heading F3C. A gas dispenser comprises a gas chamber 10 sorewthreadedly connected to a housing 34, the chamber and housing assembly containing two pistons 18, 30. The chamber, at its forward end is formed with an opening 16 which, on the chamber being filled with gas at a low pressure, e.g. atmospheric pressure, is closed by a disc 56 held in the opening by a sealing compound 86. The two pistons 18, 30 are not positively connected, the piston 30 in the firing position of the dispenser being held against a compression spring 38 by a pawl 46 and spring loaded lever 44 assembly. On the manual release of the pawl 46 the pistons 18, 30 are urged towards the forward end of the chamber 10 compressing the gas therein until a pin 28 provided on the piston 18 engages the disc 56 and urges it from the opening. A buffer in the form of an annulus 50 of resilient material engages the piston 18 at the forward end of its stroke. In a modification (Fig. 2 not shown) the two pistons are operatively connected by a push rod and the piston 30 may be held in a number of positions axially of the housing thus varying the thrust given by the loading spring 38.
Patent GB-991349-A (GB)
Title: Bridge-laying device
IPC: E01D15/127
Filed: 1963-05-01
Abstract: 991,349. Portable bridges. BETEILIGUNGS-UND PATENTVERWALTUNGSGESELLSCHAFT. May 1, 1963 [May 2, 1962], No. 48797/64. Divided out of 991,348. Heading E1G. A folding bridge formed of two parts 2 hinged vertically at 1 is carried on a vehicle platform 7 and is supported by a linkage 8, 9 such that it may be swung from a loaded position on the vehicle to a laying position rearward of the vehicle. In the rearward position the weight is supported by rollers on a triangulated structure 9, 14, 15 while the bridge is unfolded. Finally the bridge is detached from the vehicle and laid flat.
Patent GB-1360877-A (GB)
Title: Roof and ceiling constructions
IPC: E04D13/17
Filed: 1972-10-19
Abstract: 1360877 Cast in situ roof or ceiling structures H KEEBLE 19 Oct 1972 [21 Oct 1971] 48981/ 71 Addition to 1257923 Heading E1W Cast in situ aerated concrete or concrete wth a lightweight aggregate is cast over a roof deck or slab 3. Porous clay blocks 1 are then positioned on the cast concrete with through bores 1a aligned and in communication with one another. Further concrete is then cast over the blocks 1 directly or with the interposition of a porous paper membrane 5. Alternatively an asphalt or waterproof felt layer is applied directly to the blocks 1, the further concrete layer being omitted. The blocks are positioned such that circulation of air may be achieved through the bores la to facilitate drying of the concrete 2, 4.
Patent GB-1218319-A (GB)
Title: Filter network
IPC: H03H7/34
Filed: 1969-10-08
Abstract: 1,218,319. Filters; delay lines. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 8 Oct., 1969 [10 Oct., 1968], No. 49384/69. Heading H3U. A filter network includes a delay line continuously tapped along its length, the signals from the elemental portions of the continuous tapping being summed to produce the output. The network may be given any desired transfer function by constructing the delay line so that the signals obtained from the elemental portions have certain values. For example, as shown in Fig. 8, a low pass filter has a linear phase characteristic as a function of the frequency indicated by the broken line. In another example, Fig. 9, the input signal over a wide frequency band is shifted through 90 degrees, the phase and amplitude variations within this band being very small as indicated by the broken line. In the constructional embodiments shown the continuous tapping may be resistive, Fig. 4, capacitive, Fig. 5, or inductive, Fig. 6. As shown in Fig. 4, the filter network includes a delay line comprising a rod 4 covered with copper foil (Fig. 2, not shown) which is connected to earth, a coil 6 of insulated copper wire being wound over the foil. The input signal is applied between the earth and the terminal A of the coil 6. The desired transfer function is obtained by removing the insulation from the necessary areas of the coil surface and forming the continuous tapping by applying to the exposed coil areas a resistance layer on which is coated a conducting layer 8. The sum of the elemental signals from the continuous tapping is taken from the layer 8 and is denoted by i 2 (t). In the capacitive embodiment, Fig. 5, a dielectric sleeve 10 is placed over the coil 6 and the required transfer function is obtained by providing a metallic layer 11 of the necessary shape on the sleeve. In the inductive embodiment, Fig. 6, a secondary winding 12 is wound on a dielectric sleeve 10<SP>1</SP>, the desired transfer function being obtained by varying the number of turns per unit length of the winding and the output signal being obtained from the winding terminals B, C. The various embodiments of the network are derived from syntheses set forth in the Specification.
Patent GB-1174595-A (GB)
Title: Means for Detection of Surface Contaminants
IPC: G21H5/02
Filed: 1966-11-04
Abstract: 1,174,595. Reciprocating pumps. CLEANOMETER CORP. Nov.4, 1966 [Nov.5, 1965], No.49473/66. Heading F1A. [Also in Divisions C4, G1 and G6] In the measurement of surface contamination by measuring the rate of evaporation, from the surface, of a radio-active labelled material (see Division G1), a variety of forms of dispenser may be used to apply the material to the surface. In one arrangement, Fig. 7 and Figs.4-6 (not shown), the radio-active material is contained with solvent and aerosol propellant in removable reservoir 44. Pump 45 is depressed and released to fill passage 53 with pressurized liquid. The passage 53 is then rotated through 90 degrees by an external knob then align it with the outlet 54 and the pump 46 is depressed to eject the radio-active material. In second arrangement, the plunger pumps 45, 46 are replaced by bellows Fig. 9 (not shown).
Patent GB-496686-A (GB)
Abstract: 496,686. Washing granular materials. AUTOMATIC COAL CLEANING CO., Ltd. June 28, 1937, No. 17942. Convention date, July 29, 1936. [Class 82 (ii)] A jig washer of the filtering - bed type in which air compartments are provided to regulate the evacuation of the heavy products during their passage over the filtering beds is formed with two or more groups of washing grids arranged in series, each group consisting of two grids situated side by side and acted on by a single piston located between the two grids and in such a position that the heavy products passing through the filtering beds do not fall thereon. The washer shown comprises a trough 1 in which are two groups of grids in series, the trough being divided into compartments 2, 3, 4, 5, the grids 15, 16 of one group being in the compartments 2 and 4, and those of the other in the compartments 3 and 5. The feed is introduced at one end of the compartments 2, 4, passes over the filtering beds on the grids in these compartments, over the sills 8 and 9, and then over the beds in the compartments 3 and 5. Between the grids 15, 16 in each group are air chambers 12, 13, the evacuation of air from which is regulatable, and a piston 19 carried by two or more connecting rods 20. Partitions 17, 18 as shown extend the whole length of the trough 1 to form a chamber in which the pistons work, a downward movement of the piston causing pulsion in compartment 2 and suction in compartment 4, and the upward movement pulsion in 4 and suction in 2. The partitions 17, 18 and the shaped wall of the air chamber 13 serve to prevent heavy materials passing through the filtering beds from falling on to the piston.
Patent GB-1074330-A (GB)
Title: Epoxidation of olefinically unsaturated compounds
IPC: C07D301/19
Filed: 1963-12-23
Abstract: Epoxy compounds are produced by reacting, in the liquid phase, an olefinically unsaturated compound having 2-4 carbon atoms in the olefinically unsaturated aliphatic chain with an organic hydroperoxide in the presence of a catalytic amount of a metal epoxidation catalyst in solution in the liquid reaction phase. The expression "organic hydroperoxide" does not include percarboxylic acids.  The epoxidation catalyst must contain selenium or a metal other than an alkali or alkaline earth metal.
Patent GB-1444970-A (GB)
Title: Display apparatus
IPC: G09F19/12
Filed: 1973-11-01
Abstract: 1444970 Lamps W R GERSCH 1 Nov 1973 [17 Nov 1972] 50896/73 Heading F4R [Also in Division G5] An illuminated display device providing moving light patterns of varying size and intensity comprises multiple lamps 10-18 in axially spaced groups rotating on driven shaft 8, each lamp being at a different radius from the shaft, an opaque screen or mask 23 bearing tansparent designs 24 surrounding the shaft and lamps, and external translucent screen or screens such as 3, 5, 6. A single translucent screen may be used in which case mask 23 only partially surrounds the lamps. The lamps may be of different colours.
Patent GB-1184139-A (GB)
Title: Water-Soluble Esterimide Resins
IPC: H01B3/30
Filed: 1968-10-28
Abstract: 1,184,139. Polyesterimide resins. DR. BECK & CO. A.G. 28 Oct., 1968 [11 Nov., 1967], No. 51007/68. Heading C3R. Water soluble polyesterimide resins are prepared by initially condensing at least one aromatic tricarboxylic acid anhydride, e.g. trimellitic anhydride, with at least one primary diamine, in an amount of up to 80% of that required for cyclic imide formation, and with an excess of at least one dihydric and/or polyhydric alcohol. Excess alcohol is subsequently distilled off and the condensate formed is heated with a small amount of aqueous ammonia (optionally with additional glycol) at > 80‹ C., e.g. for to 2 hours. The diamine is preferably aromatic and the polyol may be ethylene glycol, glycerol or a mixture of the two. The aqueous solutions are useful as varnishes, they may be cyclized by heating, e.g. for one hour at 200‹ C. Reference has been directed by the Comptroller to Specification 973,377.
Patent GB-991392-A (GB)
Title: Process for hot working of metals
Inventor: DAVID PAUL
IPC: C22F3/00
Filed: 1963-12-30
Abstract: 991,392. Forging; drawing; stamping; shearing; extruding; rolling; bending; milling. SOC. ALCANTE, and COMMISSARIAT A L'ENERGIE ATOMIQUE. Dec. 30,1963 [Jan. 3, 1963], No. 51238/63. Headings B3B, B3E, B3H, B3K, B3M, B3P, B3Q and B3W. In the hot working of metals, the operation is performed in a vacuum chamber 21 within which the workpiece 1 is heated locally by a focused electron beam 3. The workpiece is headed within die 2 by a punch 4 after heating by the beam 3 produced by an electron gun 22. Chamber 21 is connected by pipe 23 and valve 24 with a vacuum pump. The beam is cut off before heading begins. In another embodiment, Fig. 3, a strip 7 heated by electron beam 9 is drawn through die-plate 5 to produce the section 7a. In a further embodiment, Fig. 7, a plate 12 heated by electron beam 14 is drawn into a cup by a punch 15. Alternatively the beam may be directed through the punch bore 25. The beam is modulated or deflected to produce a desired heating pattern, Figs. 9 and 12 (not shown). References are also made to the use of this method of heating in drop forging, hot bending, hot extrusion, strip punching, hot thread-rolling and milling.
Patent GB-1112770-A (GB)
Title: Method and apparatus for analysing the particle size distribution of powder
IPC: G01N15/04
Filed: 1965-12-02
Abstract: 1, 112, 770. Photo-electric determination of particle size distribution. HITACHI SEISAKUSHO KABUSHIKI KAISHA. Dec. 2, 1965 [Dec. 10, 1964], No. 51269/65. Heading G1A. The particle size distribution of a powder sample is determined by scanning a beam of light down a cell containing a liquid suspension of the powder, which has previously been agitated, and detecting the transmitted light intensity as an electrical signal which is plotted as one co-ordinate on a graph recorder, the other co-ordinate being provided as an electrical signal corresponding to the square root of a linear variable representing the scanning position of the light-beam. The weight particle size distribution is shown to depend on #h, the square root of the distance a particle of radius r has settled in a certain time, and log I, the logarithm of the light intensity transmitted by the liquid suspension. If a graph of log I against #h is plotted, the weight ratio of particles in a certain radius range compared with those in the whole radius range can be determined by measurement of the areas, under the curve, corresponding to those values. Electrical signals corresponding to I and #h are plotted on a nomographical recorder, the markings on the recording sheets of which allow simple conversion of the I against #h curve to one of log I against #h, from which a required weight ratio can be determined Fig. 5 (not shown). From a range of weight ratios, a weight particle size distribution curve (weight ratio against particle radius) may be produced Fig. 6 (not shown). Two arrangements for producing the electrical values of I and #h are described. In both cases the transmitted intensity I is obtained by photoelectrically detecting light collimated by lens and slit system, and caused to scan vertically down a cell containing the liquid suspension. The scanning starts an arbitrary time after agitation of the liquid. The means causing the scan is arranged also to produce the electrical signal corresponding to #h by producing a signal representing the varying position of the scanning beam. In one arrangement Fig. 2, a plane mirror 9 is driven along a rectilinear path and reflection of the light-beam from this to another mirror 10 causes scanning of the beam, while the sliding contact of a potentiometer, wound to produce a resistance value equal to #h, moves in synchronism with the mirror. In a second arrangement Fig. 4 (not shown) a concave mirror is slowly rotated to scan the light-beam over the cell, and a cam, shaped to have a square root law, rotates with it, an arm connected to a linear potentiometer following the cam, so that #h electrical signals are produced. The arrangements of the invention avoid the disadvantages encountered using the arrangement disclosed in Specification 1, 069, 680, which includes expensive computing apparatus.
Patent GB-1320157-A (GB)
Title: Method and system of controlling electric arc furnaces
IPC: H05B7/148
Filed: 1970-10-29
Abstract: 1320157 Automatic control of arc furnaces NIPPON KOKAN KK 29 Oct 1970 [30 Oct 1969] 51370/70 Heading G3R An electric arc furnace 4 of the direct or indirect heating kind has an automatic current regulator 9 which controls, via a programme controller 10, a driving mechanism 11 to adjust the position of the furnace electrode 5 to maintain the electrode current at a desired value, the regulator 9 being over-ridden if the power factor falls below a predetermined value corresponding to maximum power at a constant operating voltage for the furnace. When the actual power factor, sensed by a regulator 7 fed from transformers 6, 8, is above the predetermined value the regulator 9 provides raise and lower signals on lines 12, 13 to decrease or increase the current to maintain it at the desired value . When the power factor falls below the predetermined value, due to variations in the furnace operating conditions outside the control of the regulator 9, the latter may continue to perform its "raising" action since this will reduce the current and so prevent a further decrease in the power factor. However if the regulator 9 attempts to lower the electrode, thus raising the current and reducing the power factor, the regulator 7 causes the controller 10 to change the "lower" signal to a "raise" signal, thus reducing the current and again preventing further decrease in the power factor. Restoration of the power factor to its predetermined value allows the normal operation of the regulator 9 to resume, the desired value of current at which regulation occurs being equal to or slightly less than the current corresponding to the maximum power of the furnace. Typical characteristics relating power, reactive power and power factor to the electrode current are discussed, Fig. 1 (not shown), the control system maintaining the operating point of the furnace along the positive slope portion of the power characteristic near the point of maximum power.