baber/WOPTO huggingface dataset:
Patent GB-1277448-A (GB)
Title: Method and apparatus for removing a soldered component from a substrate
IPC: B23K1/018
Filed: 1969-08-14
Abstract: 1277448 Soldering RCA CORPORATION 14 Aug 1969 [21 Aug 1968] 40620/69 Heading B3R In removing a component having connections soldered to a substrate, the component is connected to a tension applying device and the connectins are heated to melt the solder, the device then removing the component from the substrate. A fountain type solder pot 10, Fig. 1, has a cap 12 over the head 13 with an orifice 14 to constrict the solder output produced by a motor driven pump 18. A masking plate 20 is arranged above the pot and has pads 36 co-operating with springs 38 to permit movement of the plate towards the pot. The plate 20 has an opening 22 above the orifice 14 and has holes 26 surrounded by a gasket 22 to receive locating pins of a movable stop 30. The tension applying device has a body 40, Fig. 3, with side panels 44 and a slot 42 spanned by a steel strip 46 forming a stop for a loop of a spring assembly 48. A second spring 50 is interlocked with the loop of assembly 48 and can be easily secured about a component 34 and a cover 52 has a lip 54 fitting in the groove 42 beneath the strip 46. In operation the stop 30 is positioned and a substrate is fitted against it so that the component to be removed is centred over the aperture 22. The tension device is placed on the substrate and the spring 48 is tensioned, the spring 50 is placed about the component and the lip 54 is slipped into the groove 42. The pump 18 is started, pressure is applied to the member 52 to compress the springs 38 and bring the under surface of the substrate about the component into contact with molten solder pumped through the orifice and when the solder connections melt the spring assembly 48 causes the component to be removed. A radiant or infra-red heating source may be employed as alternatives.
Patent GB-1143283-A (GB)
Title: Improvements in or relating to ceilings
IPC: E04B9/08
Filed: 1966-09-12
Abstract: 1,143,283. Beams for supporting suspended ceilings. ARMSTRONG CORK CO. 12 Sept., 1966 [10 Sept., 1965], No. 40695/66. Heading E1W. A gridwork for supporting, e.g., acoustic ceiling tiles, comprises steel main beams A (Fig. 1), which each have a splice joint to allow for thermal expansion, and cross-beams B (Fig. 5) which have shaped ends at their connections to beams A to allow for expansion also. The splice joints each comprise a flanged plate B fixed by tabs 14, 15 to beam section A", and slidably connected to beam section A' via tabs 16, 17. A tab 18 is also bent out from plate B, which acts against a cam section 11 formed in the web 5 of beam section A' upon expansion of the beam A, pushing the end of the flange 6 of beam section A' down and out of engagement with the end of the flange 6' of section A". The web 21 of each cross beam 20 has a projecting portion 26 to pass through a hole 13 in the main beam A with a notch 24 to maintain the correct height of flange 22, a shoulder 25 to allow flange 22 to ride up over flange 6 upon expansion of the cross beam, and a deflatable portion 27.
Patent GB-1135528-A (GB)
Title: Improvements in the treatment of senna pods
IPC: C07H15/24
Filed: 1967-09-06
Abstract: 1,135,528. Extracting senna pods. A. NATTERMANN & CIE, G.m.b.H. 6 Sept., 1967 [8 Sept., 1966], No. 40821/67. Heading A5B. A process for isolating a sennoside-rich concentrate comprises subjecting senna pods, at room temperature, to a preliminary extraction with an aqueous solution of 87-92% by volume concentration of acetone or an alcohol having 1-3 carbon atoms after which the pods are extracted with cold water and a dry extract is isolated therefrom.
Patent GB-1023905-A (GB)
Title: Method and apparatus for stretching webs of material
IPC: B65H23/00
Filed: 1964-10-07
Abstract: 1,023,905. Films; stretching plastic sheets. G. BRUCKER, [trading as BRUCKERTROCKNERBAU]. Oct. 7, 1964 [Oct. 10, 1963], No. 40827/64. Headings B5A and B5B. An extensible strip-shaped web of material is stretched in the longitudinal direction, the heated material being subjected to longitudinally acting tensile force produced by pairs of rollers, and during the stretching process the web is pressed against a support in the area of its longitudinal edges to maintain its width, the positions of the two pressure points being controlled in dependence on variations in the longitudinal web edges in the transverse direction. Control of the two pressure points may take place each independently of the other in accordance with variations in the longitudinal edge corresponding to the pressure point concerned. In apparatus as shown, the web 1 runs over rollers 3-8 in the direction of arrow 2, rollers 6-8 being driven at higher speeds than rollers 3-5, so that the web 1, which is heated by radiator 9, is stretched between rollers 5 and 6. Pressure rollers 10a, 10b, set obliquely, press the web against the curved roller 11, preventing lateral contraction of the web. Should web 1 become laterally displaced when entering the stretching device 1a, Fig. 3 (not reproduced), detectors (not shown) disposed in or in front of stretch gap 13 and responsive to transverse variations in the longitudinal edges of web 1, move the rollers 10a, 10b transversely to prevent loss of contact with the web. Detectors may comprise mechanical probes, photo-cells or pneumatic means, and the pressure elements may be actuated by mechanical or hydraulic means. In Fig. 4 (not reproduced), where web 1 has a major irregularity 1b in a longitudinal edge zone, loss of contact of pressure roller 10a with the web is avoided by roller 10a being moved inwards by detector elements responsive to variations in the longitudinal web edge, when the irregularity in the web edge reaches the area of pressure roller 10a. In Fig. 5 (not reproduced), if the stretch gap is displaced in the longitudinal web direction in the direction of arrow 2 (against the feed direction) from line 15 to line 16, owing, for example, to variations in film thickness, pressure rollers 10a, 10b are moved inwardly by detectors so as to maintain contact with web 1c. Fig. 6 (not reproduced) shows a similar arrangement where the rollers are arranged to move longitudinally, instead of transversely, when the stretch gap is displaced.
Patent GB-981787-A (GB)
Title: Improvements in or relating to the control of electrical power
IPC: G05D23/24
Filed: 1962-10-29
Abstract: 981,787. Automatic temperature control z systems. RESEARCH & ENGINEERING CONTROLS Ltd., and J. S. JOHNSTON. Sept. 4, 1963 [Oct. 29, 1962], No. 40841/62. Heading G3R. The current through an inductive heater 13 energized from a mains supply 11, 12 is controlled by means of a rectifier bridge 14 comprising rectifiers 15---18 and a silicon controlled rectifier 19, the arrangement being such that the average number of trigger pulses applied in a given time to the rectifier 19 is controlled in accordance with an error signal dependent on the temperature of an enclosure heated by the element 13, the temperature thus being maintained at any desired value. The control circuit for the trigger pulses is shown in Fig. 2 in which a pulse generator 22, energized from the same supply as the heater 13, provides a pulse every time the supply voltage crosses zero to the input of an "AND" gate 24 which, if open, passes the pulses through a mono-stable multivibrator 30 and power amplifier 26 to the control electrode of rectifier 19. The "AND" gate is controlled by a comparator 29 having two inputs, one from a controller 32 which produces a signal dependent on the temperature error, and the other from an averaging circuit 42 which provides a signal dependent on the number of trigger pulses passed to amplifier 26 in a given time. The controller 32 comprises an oscillator 33 supplying a transformer whose centre-tapped secondary 35 forms a bridge circuit with a temperature sensitive resistor 36 responsive to the enclosure temperature and a resistor 35 adjustable for temperature setting, the bridge output passing through a potentiometer 38 to an amplifier and detector 39 whose output is demodulated to be sensitive to the phase of the input signal, the phase reference signal to detector 39 coming from a further secondary coil 40 of the controller transformer. If the signal from the circuit 42 is less than that from controller 32, the comparator 29 produces a signal to open the "AND" gate 24, this gate being closed when the two signals are equal. Elements 24, 29, 30 and 42 form a closed control loop whose gain is controlled by potentiometer 38, the multivibrator 30 acting as a pulse shaper and also to cause the gate 24 to remain open until the pulse is over. The averaging circuit may be modified to incorporate the gain control, Fig. 3 (not shown), this modification also incorporating means to compensate for changes in the mains supply voltage. The averaging circuit may be further modified, Fig. 4 (not shown) and a mathematical analysis is given of the two modifications. The control system described may be applied to control variables other than temperature, and the signal applied to the comparator may be any desired function of the error voltage, e.g. integral and/or first and higher derivatives with respect to time. A divide-by-two circuit may be included in the input to the averaging circuit so that the rectifier 19 is switched to conduct integral multiples of whole cycles of the mains supply.
Patent GB-1325693-A (GB)
Title: Granulation process
IPC: C05G3/00
Filed: 1970-08-26
Abstract: 1325693 Granular fertilizers KAO SOAP CO Ltd 26 Aug 1970 [29 Aug 1969] 41037/70 Heading C1B The invention relates to a method of obtaining complex fertilizer products in the form of granules of uniform particle size which comprises granulating the fertilizer in a rotating pan or drum into which a suitable amount of a binding agent comprising an aqueous solution of a water solubilized macromolecular vinylic compound is introduced, the solution having been obtained by dissolving a substantially water-insoluble macro-molecular vinylic compound, in a solution of an anionic surface active agent and drying the granular product obtained. Suitable vinylic compounds include polyvinyl acetal, polyvinyl acetate, waterinsoluble partially acetylated products of polyvinyl alcohols, water insoluble polymers obtained by graft polymerization of vinyl acetate on polyvinyl alcohol, water insoluble copolymers of vinyl acetate with compounds such as vinyl pyrrolidone and maleic anhydride and copolymers of vinyl acetate with compounds such as vinyl laurate. The aqueous solution of polymer is obtained by dissolving the macromolecular vinylic compound in a concentrated solution (generally 10-30%) of an anionic surface active agent.
Patent GB-1399690-A (GB)
Title: Cameras
IPC: G03B7/16
Filed: 1973-08-31
Abstract: 1399690 Cameras AGFA GEVAERT AG 31 Aug 1973 [31 Aug 1972] 41091/73 Heading G2A A camera has a liquid crystal shutter controlled by a photo-electric integrating circuit. It is stated that this provides a system of sufficiently low inertia to enable daylight or flash photography to be controlled without altering the sensitivity of the photo-electric element. As shown, a photodiode 6 is connected to an operational amplifier 5 which has an inegrating capacitor 10 in its feedback circuit and is connected to a threshold detector 4. The detector terminates exposure by applying a P.D. across a liquid crystal 3 located between plane polarizers 1 and 2 in front of the objective 15.
Patent GB-1062932-A (GB)
Title: Improvements in two-wheeled cycle vehicles
Inventor: MOULTON ALEXANDER ERIC
IPC: B62K19/34
Filed: 1962-10-19
Abstract: 1,062,932. Two wheeled pedal cycles. MOULTON CONSULTANTS Ltd. Oct. 21, 1963 [Oct. 19, 1962], No. 41505/63. Addition to 907,467. Heading B7E. A collapsible cycle having small 12-19 inches diameter wheels and the frame configuration shown in Fig. 1, comprises front forks resiliently and telescopically housed in a head tube 2, Fig. 2, and rear fork arms 62, Fig. 5, pivoted at 61 and having an arcuate bridging member 64 to which is fixed a rubber spring 65 which in turn is fixed to a curved plate 66 on the backbone 1. The cycle is collapsible as shown in Fig. 7, and a longitudinal section through the seat tube 3, Fig. 4, shows the backbone 1 dimpled at 71 to contain the crank housing 20 which is supported by a rearwardly extending bracket member 74 brazed both to the backbone 1 and to ears 72 depending from the tube 3 (see also Fig. 3, not shown). The frame members are pop riveted together or joined by welding, brazing or adhesive, or by combinations of these fixings.
Patent GB-1000857-A (GB)
Title: Improvements in or relating to electro-magnetic apparatus
Inventor: PARK KENNETH JOHN
IPC: H01F38/10
Filed: 1963-10-24
Abstract: 1,000,857. Transformers and inductors. GENERAL ELECTRIC CO. Ltd. July 3, 1964 [Oct. 24, 1963], No. 42014/63. Heading H1T. A choke 1 and a filament heating transformer 2 for a discharge lamp are enclosed in a common steel casing formed of a tray-like base 3 and a tunnel-like enclosing cover 4. The choke may be tapped. A common terminal block 16 is provided.
Patent GB-1010655-A (GB)
Title: Method of operating a blast furnace
IPC: C21B5/00
Filed: 1961-11-24
Abstract: In the operation of a blast furnace there is provided, between the normal tuyeres through which a steady blast is blown, a series of auxiliary tuyeres through which a pulsating blast is successively blown.  In a modification the auxiliary tuyeres may be arranged in pairs, each pair enclosing a normal tuyere, when the blast is transferred to successive pairs of tuyeres.  When the flow through a normal tuyere is found to be defective, the pulsating blast is confined to the auxiliary tuyere associated therewith until normal flow has been restored, when sequential blowing is resumed. A constant low pressure flow may be maintained through those auxiliary tuyeres which are not otherwise in use.
Patent GB-1466844-A (GB)
Title: Supporting and driving apparatus for a tool such as a saw
IPC: B28D1/06
Filed: 1975-10-15
Abstract: 1466844 Sawing masonry &c. H BIERI 15 Oct 1975 [23 Oct 1974] 42189/75 Heading B5L [Also in Division B3] Support and drive apparatus for a tool such as a saw and particularly a heavy-duty reciprocatory saw 13 for sawing through walls, floors &c., comprises a first unit which includes a vacuum pad 17, a flexible sealing skirt 18 secured to said pad to face and form a seal against any generally planar surface 46, e.g. of a wall &c., on which said first unit is to be mounted, elongate guide means 32 rigidly secured to said pad to extend parallel to said surface, tool carrier means 22 adapted to carry the tool and movably mounted on the guide means, first hydraulic drive means 24 for producing a reciprocatory tool movement B, second hydraulic drive means 33 for moving the tool carrier 22 along the guide means in direction C; a second unit including vacuum pump means and hydraulic pump means (Figs. 1 and 2, not shown) located remote from the first unit; and conduit means 6, 14, 15, 16, 19, 20 operatively interconnecting the first and second units. The vacuum pad has spaced adjustable legs 38 to prevent undue stress and distortion of the flexible skirt 18 and additional support posts may be fixed to pillars 48 provided at spaced points on the vacuum pad 17. The second unit (comprising vacuum and hydraulic pumps and controls &c.) includes two mobile carts, facilitating transport of the apparatus to site. As shown, Fig. 5, the saw blade 13 is attached to a reciprocatory holder 26 guided by wheels 30, 31 and driven by crank 25, the blade itself having a main channel 27 for coolant with branch channels 26 discharging coolant between cutting inserts 42 of diamond or hard metal.
Patent GB-963464-A (GB)
Title: Polyester resin compositions
IPC: C08K5/36
Filed: 1962-11-08
Abstract: Uncured polyester resin compositions in which the resin is formed from, as essential constituents, (1) an ethylenically unsaturated dicarboxylic acid; (2) a dihydric alcohol and (3) a polymerizable monomer containing a polymerizable CH2 = C < group, are stabilized with a sulphonium halide, preferably in the form of a solution in a solvent, having the formula: <FORM:0963464/C3/1> where X is a halogen atom and R1, R2 and R3 are the same or different and are alkyl, alkenyl or alkynyl groups having 1 to 18 carbon atoms, or aryl groups. In addition to components (1), (2) and (3) above, the polyester may be formed from a saturated dicarboxylic acid (4). In the examples the stabilizers used are t-butyl-dimethyl sulphonium iodide; trimethylsulphonium bromide; tribenzyl sulphonium bromide; t-butyldimethyl sulphonium chloride; tribenzyl sulphonium chloride and triphenyl sulphonium chloride. The stabilized uncured polester resin compositions can be cured by adding organic peroxides. The polyester composition can contain lubricants, fillers, pigments and plasticizers. The composition of the invention may be shaped to form architectural panels.
Patent GB-938639-A (GB)
Title: Foamed polystyrene
IPC: C08J9/16
Filed: 1961-11-28
Abstract: A composition convertible into cellular form by the action of heat comprises acetone-insoluble, isotactic polystyrene of Tyler mesh size of 10 or smaller and methylene chloride or a halogenated aromatic hydrocarbon which has a boiling point below the melting point of the polystyrene and which dissolves the polystyrene in at least 0,1% by weight.  Specified halogenated aromatic hydrocarbons are chlorobenzene and chlorotoluene.  The cellular product finds use in insulating,packing and buoyancy applications.ALSO:A composition convertible into cellular form by the action of heat comprises acetone-insoluble, isotactic polystyrene of Tyler mesh size of 10 or smaller and methylene chloride or a halogenated aromatic hydrocarbon which has a boiling point below the melting point of the polystyrene, which dissolves the polystyrene in at least 0,1% by weight and which is present in from 0,1 to 4 times the weight of the polystyrene. Specified halogenated hydrocarbons are chlorobenzene and chlorotoluene.  The composition is heated to a temperature above the boiling point of the halogenated hydrocarbon but below the melting point of the polystyrene to give products which find use in insulating, packing and buoyancy applications.
Patent GB-1420049-A (GB)
Title: Recovery of marine pipelines
IPC: F16L1/16
Filed: 1973-09-11
Abstract: 1420049 Recovery of submerged pipe-lines EXXON PRODUCTION RESEARCH CO 11 Sept 1973 42584/73 Heading F2P A method for recovering a submerged end of a liquid-filled pipe-line from the bottom of a body of water comprises inserting into the submerged end of the pipe-line a one-way pigging device adapted to move forward in the pipe-line in response to fluid pressure from behind and to resist movement in response to fluid pressure from the opposite direction; introducing a gas into the submerged end of the pipeline behind the pigging device under sufficient pressure to move the device forward while preventing the entry of water into the submerged end until the device has traversed a section of the pipe-line sufficiently long to extend at least to the surface of the body of water; discontinuing the introduction of gas and thereafter lifting the submerged end of the pipe-line to the water's surface, the pigging device preventing the backflow of liquid in the pipe-line in response to changes in pressure, e.g. when the raised end is vented. Liquid may be withdrawn from the other end of the pipe-line by means of a pump lowered into the pipe at that end and as liquid is withdrawn the pigging device is propelled forward by gas introduced at the submerged end. In operation, the one-way pigging device, shown 3, is moved forward through the pipe-line 11 from left to right Fig. 2 in response to pressure behind the device i.e. on the left. As long as this pressure exceeds that in front of the device diaphragm 58 holds sleeve 31 in a forward position on rod 30. Arms 37, 39, (38, 40) are held in a retracted position with respect to the pipe wall. Movement of the sleeve and diaphragm forward on the rod is limited by pins 51 in slots 50. When the pressure behind the device is reduced to a level below that in front of the device, the diaphragm moves sleeve 31 rearward on rod 30 forcing arms 37-40 outwardly with respect to the apparatus until teeth 41 engage the inner wall of the pipe-line holding the device in place and preventing further movement. Stop 32 limits the rearward movement of sleeve 31. A resilient sealing ring 54 prevents movement of fluid around the device. When the pressure behind the device is again raised above that in front of it, the diaphragm 58 will move the sleeve 31 forward and retract the arms from the pipe wall thus allowing further forward movement of the device. In another embodiment of the one-way pigging device Fig. 4 (not shown) a piston (71) acting in a cylindrical sleeve (70) replaces the diaphragm 58 used in the first embodiment.
Patent GB-874082-A (GB)
Title: Long chain carboxyl compounds useful in photography
IPC: G03C1/043
Filed: 1957-07-30
Abstract: Salts of urethane carboxylic acids of the formula R-[O-CO-NH-CH-(Y)-(CH2)m-CO.OM]p wherein M represents an alkali metal, the ammonium group, or an ammonium group substituted by a C1-C4 alkyl group or by HOC2H5-, Y represents a hydrogen atom, a C1-C5 alkyl group or (CH2)m1COOM where m1 is 0 or 1, p is 1 or 2, and R is a hydrocarbon group having 8 or more carbon atoms, and also those compounds wherein R is joined to the urethane oxygen atom(s) by the group -O(-A-O)n-A- (wherein -A- represents an alkylene group and n is an integer) or a <FORM:0874082/IV (b)/1> group or a <FORM:0874082/IV (b)/2> group are prepared by reacting an alcohol R-OH or R(OH)2 or the appropriate etheralcohol or carbamido-alcohol with an isocyanato-carboxylic ester of the formula OC=N - CH(Y) - (CH2)mCOOR11, wherein R11 is a C1-C6 alkyl group, and then hydrolysing the methane carboxylic ester to form the required salt. In Example 1, a mixture of dimethyl-a -isocyanato-glutarate and ptert.-octylphenoxy-tetraethoxyethanol is heated at 80 DEG  to 90 DEG C. for 3 hours, and the product is hydrolysed with aqueous alcoholic NaOH whereby the disodium salt of N(p-tert. octylphenoxy pentaethoxy-carbonyl) glutamic acid is obtained.  In Example 5, a mixture of 2-lauroylamino - 2 - methyl-1,3 - propanediol and ethyl isocyanatoacetate is allowed to stand for 2 hours and is then heated for 1 hour on the steam-bath.  The product is hydrolysed, by means of NaOH in aqueous methanol, to give <FORM:0874082/IV (b)/3> In Example 8, polyethylene glycol (M.W. 1540) is heated at about 70 DEG C., with dimethyl isocyanatoglutarate for 24 hours.  The product is hydrolysed with caustic soda to give <FORM:0874082/IV (b)/4> Specifications 854,087 and 874,081 also are referred to.