baber/WOPTO huggingface dataset:
Patent GB-956044-A (GB)
Title: New curing agents for polyepoxide resins
IPC: C08G59/40
Filed: 1961-08-04
Abstract: A curable composition comprises a polyepoxide having more than one epoxy group per molecule, and from 2-50%, based on the weight of the polyepoxide, of an amino borane curing agent of the formula R2BNH2, R2BNR1R11, R2BN(CH2)x, RB(NH2)2, RB(NHR1)2, RB(NR1R11)2, RB[N(CH2)x]2, B(NHR1)3, B(NR1R11)3 or B[N(CH2)x]3, where x is an integer from 3 to 7, R represents an unsubstituted aliphatic hydrocarbon radical of 1-20C, an aliphatic hydrocarbon radical of 1-12C having 1 or more aromatic hydrocarbon substituents, an unsubstituted aromatic hydrocarbon radical, or a substituted aromatic hydrocarbon radical having 1 or more aliphatic hydrocarbon substituents of 1-12C, and R1 and R11 each represent an unsubstituted saturated aliphatic hydrocarbon radical of 1-20C, an unsaturated aliphatic hydrocarbon radical of 2-12C, an aliphatic hydrocarbon radical of 1-12C having one or more aromatic hydrocarbon substituents, an unsubstituted aromatic hydrocarbon radical, a substituted aromatic hydrocarbon radical having 1 or more aliphatic hydrocarbon substituents of 1-12C, or a heterocyclic radical.  Long lists of suitable compounds are given, the following being used in the examples:-A glycidyl polyether derived from epichlorhydrin and bisphenol A, an epoxidized polybutadiene, the ester of 2-methyl-4, 5-epoxy-hydroxy-methyl cyclohexane and 2-methyl-4, 5-epoxy-cyclohexane-1-carboxylic acid, and epoxidized soyabean oil; tris (isopropylamino) borane, tris (t-butylamino) borane, di-ethyl-(amino) borane, tris (diethylamino) borane, tris (methylamino) borane, diphenyl (piperidino) borane, tris (n-propylamino) borane, tris (isobutylamino) borane, di-n-octyl (N-methylanilino) borane, tris (stearylamino) borane, tris (N-methylanilino) borane, tris (allylamino)-borane, tris (anilino) borane, tris (piperidino) borane, tris (di-n-butylamino) borane, isopropyl-bis (allylamino) borane, n-hexyl-bis (2-pyridylamino) borane, ethyl-bis (piperidino) borane, and a -naphthyl-bis (amino) borane.  Optional additives specified are glass, mineral and metal fibres, asbestos, mica, iron oxides, bentomite, silica, TiO2 and Cd yellow. Certain combinations of polyepoxide and about 10-35% of curing agent produced foamed products without a blowing agent. Examples are (3) tris-(t-butylamino)-borane and epoxidized polybutadiene. (6) tris-(diethylamino) borane and epoxidized soybean oil, and (11) tris-(isobutylamino) borane and the ester of 2, methyl-4, 5-epoxy-1-hydroxymethylcyclohexane and 2-methyl-4, 5-epoxy-cyclohexan-1-carboxylic acid.
Patent GB-1275636-A (GB)
Title: Hydraulic control system
IPC: E02F3/43
Filed: 1969-06-05
Abstract: 1275636 Earth-working ILSBO INDUSTRIER AB 5 June 1969 [6 June 1968] 28483/69 Heading E1F A tool holder pivotally mounted on control arms of a crane, or loader is kept at a set angle to the ground, as the control arms are pivoted, by means of a supervisory unit 16-23 which in response to movement of the control arm permits passage of fluid to valve 25 which directs fluid to the appropriate side of a hydraulic ram connected between the tool holder and arms. Wire 15 of a Bowden cable is connected to a control rod 16 of the supervisory unit and is so disposed around pulleys on the pivotal shafts of the arms and of the tool holder that a change in the angle of the tool holder from the set angle causes movement of the control rod. During raising of the arms by a second hydraulic ram, return fluid from the ram is normally diverted from screw 28 through channel 34, chamber 53, 54 and channel 33. Movement of control rod 16 opens a passage between chambers 40 and 39 and allows some of the return fluid to pass along pathway 35, 39, 40, 45, to throttling disc 26 of valve 25. The pressure created at the disc causes the plunger of the valve to move to connect channel 53 to channel 55 instead of channel 54. From channel 55 the fluid passes to the ram to adjust the position of the tool holder. When the arms are being lowered return fluid from the second ram passes through screw 29 and, through a one-way valve means, passes through channel 49 to chamber 38. Movement of the control rod in the opposite direction links chamber 38 with chamber 37 and, through channel 44, with chamber 40. A higher pressure is created this time at throttling disc 26 because the return fluid is at a higher pressure so that the plunger of the valve connects chamber 54 with chamber 58 and thus directs pressure fluid from screw 28 to screw 32 leading to the first ram.
Patent GB-1280069-A (GB)
Title: Phase stabilizing
IPC: G03H1/04
Filed: 1970-06-12
Abstract: 1280069 Photo-electric interferometers INTERNATIONAL BUSINESS MACHINES CORP 12 June 1970 [23 June 1969] 28504/70 Heading G1A [Also in Division G2] In a plural beam interferometric system the relative phase of the beams 13, 16 is stabilized by monitoring with a photo-detector arrangement 24 the interference pattern resulting from the  interference of at least a portion of each beam, generating a correction signal based on any change in the intensity level, and altering the speed of propagation of at least one of the beams, e.g. by changing the refractive index of an electro-optical device 26, in response to the correction signal, thereby changing its phase to tend to maintain the intensity of the monitored pattern constant. The system is used particularly for generating holograms, in which case an apertured informationbearing mask is located in one beam path, and the interference pattern is recorded on a photographic medium 21. After passage through the medium the interfering beams are focused on to the detection arrangement 24 through a stop 23. This arrangement comprises two photo-cells, Fig. 3 (not shown), positioned so that one is in a positive portion of the light-to-dark intensity gradient, the other in a negative portion. Any change in the intensity distribution across the pattern thus produces a differential correction signal. In a further embodiment, Fig. 5 (not shown), both beams pass through an electro-optical device (50) before being divided to produce interference, the correction signal altering both beam speeds in opposite senses. A plane-polarized laser beam passes through a quarter-wave plate (53) to become circularly polarized, and is then separated into two components having mutually perpendicular polarizations by a birefringent crystal (54). After passage through the electro-optical device, the two polarized beams are divided and one passes through a half-wave plate (58) to ensure that both beams are polarized in the same plane before they interfere. In an embodiment in which one beam is passed through a diffusing plate (68), Fig. 6 (not shown), before interference, two semi-transparent beamsplitters (64, 65) separate out undiffused portions of each beam which are then focused on to the monitoring photo-detectors. Spatial filters are provided in front of the detector arrangement and diffuser respectively. In a second embodiment employing a diffuser plate in one path, Fig. 7 (not shown), the plate only partially intercepts this path, and the undiffused beam passes through an aperture (75) in the information mask to form a distinct interference pattern at the detector arrangement.
Patent GB-848448-A (GB)
Title: Improvements relating to recuperators for gas generating ovens, and other industrialfurnaces
Inventor: SCHOFL KARL
IPC: F27D17/00
Filed: 1956-09-18
Abstract: 848,448. Recuperators. DIDIER-WERKE A. G. Sept. 18, 1956, No. 28556/56. Class 64(1) A recuperator wherein horizontal flues arranged one above the other are disposed between and in heat-exchange relationship with rows of vertical flues, the horizontal flues being grouped in superimposed flow sections 9, 10, 18, 20 arranged in series along the flow path, has zones 11, 17, 19 for reversing the directions of flow between sections incorporated in the recuperator body in heat-exchange relationship with the rows of vertical flues. The flues are built up of hollow flue bricks arranged in "broken bond" and apertured in the zones 11, 17, 19. The air rises in the horizontal flues while hot gases enter the vertical flues at 22 and leave at 23.
Patent GB-1009873-A (GB)
Title: Improvements in converters for telegraph signals or the like
Inventor: GREEN NORMAN GEORGE
IPC: H04L25/05
Filed: 1962-07-25
Abstract: 1,009,873. Telegraphy. BRITISH TELECOMMUNICATIONS RESEARCH Ltd. July 23, 1963 [July 25, 1962], No. 28634/62. Heading H4P. In a telegraph receiver in which received start-stop signals are sampled at the nominal mid-point of each bit, the outgoing signals have a higher speed than the incoming signals. When an automatic speed correcting circuit is put in operation by the operator the stop bit is sampled twice, at about its beginning and ends the speed of the receiving distributer being adjusted until both these samples show Stop conditions. Signals received operate bi-stable unit IT, the Start bit starting oscillator IO which feeds distributer ID. The distributer opens gates G in succession, allowing the received bits to be sampled and the samples to be stored in bi-stable units ES. When the fifth bit is sampled, oscillator IO is stopped and oscillator OO started, causing distributer OD to read out stores ES sequentially and pass the bits to a teleprinter. In general there will be a pause between each outgoing character. Neon indicators SPI, SPO show the speed of the input and output. When the speed of oscillator IO is to be corrected the Stop bit is sampled twice by gate G7. If either sample shows Space polarity, i.e. Stop bit not present, unit PG pulses causing speed control motor SM to step to increase the speed of oscillator IO. Stepping is repeated at each character until both samplings show Mark polarity, whereupon, after a few characters' delay to ensure that the speed correspondence is not spurious, the distributers are released for normal operation by way of relay LR. Gate G7 is inhibited shortly after LR locks up to prevent speed changing should a distorted signal be received. When the apparatus is first started oscillator IO is set at its slowest speed, and then brought up to the correct speed automatically. Specification 747,010 is referred to.
Patent GB-794528-A (GB)
Title: Improvements in receivers for particulate material
IPC: B24C9/00
Filed: 1955-10-07
Abstract: 794,528. Confining and expelling dust generated in industrial processes. VACUBLAST, Ltd. (Mead, W. H.). Oct. 7, 1955, No. 28647/55. Class 8(2). [Also in Group X] Dust generated in a shot-blasting chamber comprising end walls 11, 12, Fig. 1, side walls 13 and a roof 14 having an inlet 15 down which air is forced, falls through a grill 30 into a plurality of hoppers 16, 16<SP>1</SP> arranged in rows on the chamber floor 10 extending between the end walls 11, 12 and discharging into suction ducts 17 which in turn discharge into a common take-off duct 20 and a manifold 21. Each row of hoppers is formed by partitioning a trough 23 provided by laterally-spaced inverted V-shaped members 22 by means of inverted V-shaped members 24 ; the members 22, 24 resting on inverted channel members 18 forming the ducts 17 and having apertures 26, 25, Fig. 2, serving as the hopper outlets. The discharge outlets 26 of the hoppers 16<SP>1</SP> remote from the take-off duct 20 are of greater area than the remaining outlets 25 and the ducts 17 diverge towards said duct 20 in order to maintain a substantially uniform velocity of air flow. In a modification the ducts 17 are formed by channels closed by plates 34, Fig. 6 (not shown) having apertures 25 in register with the spacing of the partitions 24, and in a further modification the hoppers are formed integral with the duct-forming channel.
Patent GB-617302-A (GB)
Title: Improvements in or relating to variable speed power transmission
IPC: F16D67/00
Filed: 1946-09-25
Abstract: 617,302. Controlling change-speed gear. FORD MOTOR CO., Ltd. Sept. 25, 1946, No. 28659. Convention date, Oct. 27, 1945. [Class 80 (ii)] In a three-speed epicyclic gear in which changes in ratio take place automatically by the engagement of second and third speed clutches actuated by fluid pressure and controlled by a governor, a manually-operated rotary valve is provided to change the transmission ratio from third to second and second to first when additional acceleration is required. The invention is shown as a modification of the change speed gear described in Specification. 615,175, the fluid pump having inlet and outlet chambers 42, 43 respectively which are connectable by a pressure relief valve 64 to limit the pressure in the chamber 43. The valve 64 is in the position shown under idling conditions and the idling leak hole 67 is uncovered to allow fluid to reach the annular passage 68, an increase in pump speed causing a rise in pressure in the chamber 43 which is communicated by the hole 65 to the end of the valve 64, the valve moving axially against the spring 62 to close the passage and allowing a pressure to build up in the chamber 43. A rotary valve 71 is carried in the chamber 69 in the casing 57 and is rotatable by a pinion meshing with a toothed segment 73 carried by a shaft 74 which is connected by the levers 76 and 77 to the accelerator, and a manual control. The valve 71 has an axial drilling 79 blanked at the end by a cap 81 and has, in the planes 6, 7, 8 of Fig. 4 transverse passageways 82, 83, 87, 89, 91 as shown in Figs. 6, 7 and 8 respectively, these passageways co-operating with the ducts 85, 88 and 92 which communicate with the pressure chamber 43, the third speed clutch conduit and exhaust respectively. The valve is shown in the position for normal accelerator travel, excess travel resulting in an anticlockwise rotation of the valve to blank off the duct 85 and stop the flow of fluid to the third speed clutch, the clutch then disengages and the fluid in the line escapes through passages 88, 87, 79, 89 and 92. Still further depression of the accelerator rotates the valve again anticlockwise and passages 85 and 88 are both opened to exhaust, thus preventing the build-up of sufficient pressure to actuate either clutch unless the speed is sufficient to allow the pump to overcome the discharge of the passageways.
Patent GB-859382-A (GB)
Title: Improvements in or relating to quick-cooking whole-grain rice products and methods and apparatus for producing the products from broken rice
IPC: A23L7/10
Filed: 1957-09-11
Abstract: 859,382. Quick cooking rice products. GOROZPE, R. D. Sept. 11, 1957 [Sept. 27, 1956 ; Aug. 28, 1957], No. 28704/57. Class 58. A quick cooking rice is obtained by partially gelatinizing hydrated rice, crushing to reduce it to porous fluffy particles, further gelatinizing but without destroying porosity, and drying to 10-14% moisture. Before drying the particles are formed into grains of the size of whole rice by extrusion from the apparatus of Specification 859,383. Enriching materials, e.g. vitamins may be added. The product is obtained in apparatus comprising means for drying rice quickly to develope cracks, means for washing and hydrating the cracked rice, means for controlling partialgelatinization, crushing means, means for further gelatinization and drying means. Gelatinization is preferably by steam. The washer hydrater has an inlet 9 a hopper like bottom 10 and a washing unit 11 within but adjacent the upper end. Container 8 is open at the top its upper rim 12 forming an overflow surrounded by a gutter 13. Dried rice enters through an inlet 15 and is discharged through an opening 17. The washer 11 is suspended on its water pipe 24, and comprises a lower pan 25 with a flange 26, and a tray 27 perforated except for a central portion, the end portion 24<SP>1</SP> of the pipe 24 being also perforated. The bottom members 10 converge to a discharge 35 from whence the rice passes through an opening 36 to a solids pump and thence to the gelatinizers. Discharge through opening 36 by a water injection nozzle 40. The perforations 28 in the tray are smaller than the rice so that the rice flows down the tray and over the flange to the discharge chamber.
Patent GB-795552-A (GB)
Title: Chucks for drills, taps or like tools
Inventor: FARMER AUBREY
IPC: B23B31/113
Filed: 1955-10-10
Abstract: 795,552. Chucks. LUCAS (INDUSTRIES), Ltd., J. Sept. 11, 1956 [Oct. 10, 1955], No. 28762/55. Class 83 (3). A chuck has a tool-holder b and an adapter a connectable to a driving-spindle c. The adapter a has a bifurcated extension f, acceptable in a transverse radially-tapered slot k and positioned by a concentric peg, in the tool-holder b. The slot k has recesses m to receive keys g on extension f. A sleeve h slidable on the toolholder and urged by a spring i, Fig. 1, has splines j, Fig. 10, engaging slots e in the adapter and, in its lowest position, the splines engage behind the extensions f to lock the assembly. Raising of the sleeve unlocks the assembly and allows the recesses m to be rotated away from keys g, as in Fig. 3, to allow axial withdrawal of the tool-holder b.
Patent GB-1439601-A (GB)
Title: Drawn arc method and apparatus for marking metal articles
IPC: B23K9/20
Filed: 1972-06-20
Abstract: 1439601 Welding by pressure FOSECO INTERNATIONAL Ltd 31 May 1973 [20 June 1972] 28793/72 Heading B3R Apparatus for welding a label or tally to a metal article by drawn arc stud welding comprises a drawn arc welding gun including a chuck 7 to hold a label or tally and a stud if required, means for moving the gun towards the metal article and an electrically conducting member 11 projecting from the gun and tapering to a tip at its end remote from the gun, the member 11 being brought into contact with the article to provide a return path for the welding current. In an embodiment a drawn arc welding tool is supported in a carriage 3 having wheels 4 movable on an arm 5 and the chuck 7 comprises a plate 8 of insulating material carrying a pair of permanent magnets 9. In the centre of the chuck is the metal head 10 of the tool which may carry a stud and below the chuck is the earthing pin 11. Labels 1 each consisting of a flat metal plate bearing a legend on one side and a ferrous metal stud 2 capacitor discharge welded to the other side are fed to the chuck from a magazine. In use a label is fed from a magazine to the chuck where it is magnetically held, the tool 3 is advanced until the stud 2 engages the article, e.g. a hot metal ingot, bar, billet or slab, and is then advanced further until the pin 11 also engages the article. The tool is then energized to withdraw the chuck and the stud is arc welded to the article with current return being provided by the pin 11. Instead of magnets spring clips may be provided to hold the labels. The labels may each have an aperture through which a stud may be welded on to the article or a hole may be burnt through a label, e.g. of aluminium sheet, during welding of a stud to the article.
Patent GB-519856-A (GB)
Title: Improvements in and relating to the controlled movement of liquids
IPC: B01D53/52
Filed: 1938-10-04
Abstract: 519,856. Removing hydrogen sulphide from gases; electric automatic control systems. COURTAULDS, Ltd., and THOMAS, R. S. Oct. 4, 1938, No. 28800. [Class 55 (ii)] [Also in Groups XXXV and XXXVIII] In a continuous process for removing hydrogen sulphide from waste gases by washing them with an aqueous suspension of an oxide or hydroxide of iron, an oxide or hydroxide of manganese and sufficient lime to secure a pH value between 9.0 and 11.5 lime is added to maintain this value by a jet of water flowing into a suspension of lime to displace it into the washing liquid and the rate of addition of lime is varied when required by altering the rate of flow through the jet, for example, by a change of head. The Figure shows a washing tower 1 through which the washing liquid is circulated by a pump 7 a lime suspension in a tank 23 overflowing into the storage tank 5 according to the rate of water supply through a jet 21 required to maintain the pH value. The apparatus provides for automatic adjustment of the height of the jet 21 in respect of the constant level in a tank 22. A portion of washed gases passes through a chamber 9 to react with a soluble lead salt with which an absorbent film is impregnated. This film is passed between a light 11 and a photo-electric cell 12 the resulting current from which operates an amplifier 14 and recording milliammeter 15. The jet head may be adjusted according to the recorded indications and a relay 16 may operate a reversing switch 17 whereby a motor 19 which normally operates periodically to raise the jet may be caused to lower it and so increase the supply of lime suspension when the proportion of hydrogen sulphide in the washed gases is excessive. Specifications 519,229, [Group XL], and 519,274 are referred to.
Patent GB-483711-A (GB)
Title: Improvements in umbrellas or sunshades
IPC: A45B25/16
Filed: 1936-10-23
Abstract: 483,711. Umbrellas. WUSTER, jun., H. Oct. 23, 1936, No. 28816. Convention date, Sept. 22. [Class 134] A telescopic umbrella has stretchers 9 pivoted to ends of the rib parts 8 and to an element 18 which is mounted on the runner 12 and houses one end of a compression spring 17 adapted to bear against an auxiliary runner 21 secured by pivoted stays 19 to the stretchers 9 so that when the main runner is released, e.g. by operating catch 5, the spring will cause the ribs to open and to maintain their extended condition. The channelled rib parts 7 are adapted to house the rib parts 8 and the length of the stays 19 may be one quarter or one sixth of that of the stretchers 9.
Patent GB-781082-A (GB)
Title: Improvements in or relating to hand operated push or pull rods
Inventor: JOHNSON SYDNEY
IPC: B62B5/06
Filed: 1954-10-06
Abstract: 781,082. Spring catches. ELSWICKHOPPER CYCLE & MOTOR CO., Ltd. July 8, 1955 [Oct. 6, 1954], No. 28816/54. Class 44 [Also in Groups XXXI and XXXIT] In a telescopic control handle for a child's cycle or tricycle, one of the telescopic parts 25 is. provided with notches 28, 29 spaced along its length and the other telescopic part 10 is provided with a spring urged latch which is arranged automatically to engage one or other of the notches in the part 25 according to whether the telescopic parts are extended or retracted, the latch being provided with a head 23 for manually withdrawing it from a notch. The' telescopic part 10 is tubular and is slotted at 11 from one end to the other. The other telescopic portion comprises a rectangular bar 25 one edge 27 of which enters the slot 11. One end of the tubular part 10 is provided with a rubber sleeve forming a hand grip 12. The other end of the part 10 is provided with a closure member 13 having a circular part 14 and a projection 15 which extends through the slot 11. A slot is provided in the closure member 13 for the passage of the bar 25. A boss 17 projects 'from one side of the tubular part 10 and is drilled to receive a plunger 18 which forms part of the latch. The plunger extends across the tubular part 10 and through a hole 19 which intersects the slot 11. The plunger is slotted at 20 to provide a fork which is bridged by a pin 22 extending across the slot 11. A spring 24 tends to draw the pin 22 against the edge 27 of the bar 25 in which the notches 28, 29 are formed. When it is desired to withdraw the pin 22 from a notch, the enlarged head 23 of the plunger 18 is depressed against the action of the spring 24, whereupon the telescoping parts may be moved axially. Removal of the bar 25 from the tubular part 10 is prevented by a disc 31, which is brazed to the bar 25, coming into contact with the plunger 18.