baber/WOPTO huggingface dataset:
Patent GB-1431643-A (GB)
Title: Manufacture of pulp
IPC: D01B1/10
Filed: 1974-05-20
Abstract: 1431643 Obtaining fibres; pulp manufacture STADLER HURTER Ltd 20 May 1974 22348/74 Addition to 1374198 Headings D1F D2A and D2W In obtaining raw fibres from plants of the Musaceae family, e.g. abaca plants, the leaf stems and stalks are chopped or shredded, in a direction perpendicular to their longitudinal axis into short sections, e.g. of 0.5- 2.0 inches in length, and the skin, pith and waste material are substantially separated from the raw abaca fibre in the sections. As shown, the leaf stems or stalks, loose bundles or bundles of stalks tied together are cut by a cutter shredder A and force fed into a single or double disc attrition mill or refiner B to separate and loosen the skin, pith and waste material. Preferably, the refiner B comprises two vertical or horizontal discs 6, 7 having opposed serrated faces 8, 9. During refining, water may be added through a line 20. The shredded stems and stalks pass into an agitated water bath C to further separate waste and the mixture flows into a screening apparatus D comprising a flooded screen 11 over a bath 12 and showers 13, 14. The raw fibres are left on the screen 11 which has a flattened U-shaped cross-section and vibrates with an elliptical motion so that the raw fibres are thrown off at one end. Repeated treatments by secondary refining and screening apparatus (not shown) may be applied. The raw fibre may be subjected to a step by adding liquid and/or steam thereto in a tubular chamber F conical at one end and fitted with a screw extruder having flights of decreasing pitch and size in the conical end. Liquid can be added by sprays 20, 21 and steam through nozzles in the chamber bottom. In a modification, chemical and/or steam pretreatment is used prior to mechanical treatment after cutting by the shredder A and the pretreated cut sections are fed into the refiner(s) B by screw conveyors. In both forms, the raw fibre is fed to a digester E in which they are cooked by an alkaline pulping process. The pulp may be washed, screen and bleached, the bleaching comprising a sequence using chlorination, caustic extraction or two stages of chlorine dioxide.
Patent GB-740419-A (GB)
Title: Improvements in and relating to the manufacture of area-junction semiconductor devices
IPC: F16K47/08
Filed: 1953-08-13
Abstract: 740,419. Forming surface-alloys. SYLVANIA ELECTRIC PRODUCTS, Inc. Aug. 13, 1953 [Aug. 14, 1952], No. 22381/53. Class 82 (2). [Also in Groups XXII and XXXVI] A junction transistor is produced by confining a semi-conductor slice between opposed masking surfaces and applying molten metal impurity material to the semiconductor surfaces in the unmasked areas. Fig. 1 shows a junction transistor comprising a germanium slice 10 provided with electrodes 12 and 14 which form PN junctions 12A, 14A of different areas, with the semiconductor body. Electrodes 12 and 14 are provided by clamping a semiconductor slice 24 (Figs. 2 and 3) between two portions 20 of a graphite crucible having a series of cavities 22 filled with acceptor or donor impurity, according to whether the slice is of N or P type conductivity; the semiconductorimpurity alloy has a lower melting point than that of the semiconductor. The two portions of the crucible are clamped together by wedge shaped trough 28. The assembly is then'heated in a vacuum, or in hydrogen to melt and diffuse the impurity into the germanium to provide a PN junction at a desired depth. In the case of N. type germanium with indium as the impurity, the assembly is raised to 550‹ C. to 650‹ C. for about 90 seconds. An ohmic contact is provided along edge 24, and the slice removed and broken to provide a number of transistor devices each corresponding to a cavity 22. Thallium may be used in place of indium. Modified forms of crucible are described in which channels and auxiliary cavities are provided which connect with cavities 22 to maintain the level of impurity at a desired level. In these cases, if an auxiliary channel connects the two sections of the crucible, an electric current may be used to melt the impurity which solidifies in this channel after the heating, so that the crucible sections may be separated.
Patent GB-792403-A (GB)
Title: Improvements in or relating to an auger for a mining machine and an auger shield
IPC: E21C25/58
Filed: 1956-07-19
Abstract: 792,403. Mining apparatus. UNITED STATES STEEL CORPORATION. July 19, 1956 [Jan. 26, 1956], No. 22437/56. Class 68(1) An auger A for a mining machine is adjustably disposed within a shield 1 having apertures 2 and a helical rib 5. When the auger is retracted relative to the shield clutch elements 3, 4 are engaged to permit the shield to rotate with the auger, deflectors being provided to protect the clutch members, (see Fig. 7, not shown).
Patent GB-1069752-A (GB)
Title: Reinforced polymeric compositions and process for the preparation thereof
IPC: C07F7/18
Filed: 1964-05-29
Abstract: Inorganic materials for use as reinforcing agents for polymers are treated with compounds which contain groups reactive both with the reinforcing agents and with the polymers to be reinforced.  An Example (27) describes treating feldspar with 3,4-epoxybutyl triethoxysilane.ALSO:Organic thermoplastic resinous material free from aliphatic unsaturation is reinforced by an inorganic reinforcing agent which is bound to the resinous material through the groups of a coupling agent.  The compositions are made either by:  (a) reacting a coupling agent containing appropriate coupling groups either with an inorganic reinforcing agent or with a monomer or prepolymer, and then bringing the reinforcing agent and monomer or prepolymer together under polymerization conditions, or (b) reacting a coupling agent containing appropriate coupling groups with an inorganic reinforcing agent, mixing the product with a resinous material and subjecting the mixture to a shearing force.  Resinous materials specified are cellulose esters and ethers, acetal resins, silicone resins, polycarbonates, polyurethanes, saturated polyesters and, particularly, polyamides produced by lactam polymerization and epoxy resins.  Reinforcing agents specified are feldspar, asbestos, aluminium silicates, calcium magnesium silicates, silica, alumina, metal oxides, heavy metal phosphates, sulphides and sulphates, spodumene, chrysolite, garnet hercynite, chopped glass fibres, clays and metals. Coupling agents specified are silanes containing reactive groups co-ordinated chromium complexes containing reactive groups, and organic compounds containing reactive groups, e.g. amino, hydroxy, epoxy, carboxyl and isocyanate groups.  The examples describe:  (1-26) the anionic polymerization of caprolactam in the presence of the following reinforcing agents and coupling agents: (a) 3-aminopropyl-triethoxysilane and spodumene, quartz, fibrous aluminium silicate, fibrous calcium metasilicate, feldspar, mullite, wollastonite, enstatite and alumina, and (b) wollastonite and 3-(N-ethylamino) aminopropyl trimethoxysilane and diphenylsilanediol, and (27) making an epoxyterminated polycarbonate by reacting epichlorohydrin, bisphenol-A and phosgene in the presence of feldspar treated with 3,4-epoxy-butyltriethoxysilane. During the anionic polymerization of the caprolactam a cross-linking agent, e.g. a difunctional isocyanate, polyethyleneimine or tetra-(3-oxymethylene-1-propylamine) methane may be present.
Patent GB-1476176-A (GB)
Title: Bright solder electro plating baths
IPC: H05K3/18
Filed: 1974-05-20
Abstract: 1476176 Electro-plating bright Sn-Pb alloy OXY METAL INDUSTRIES CORP 20 May 1974 [21 May 1973] 22441/74 Heading C7B Bright Sn-Pb of high solderability is electroplated from an aqueous acid bath (preferred pH<1À0) containing 3À5-6 gpl Sn<SP>2+</SP>, 30-45 wt per cent Pb<SP>2+</SP> based on the total Sn and Pb, 6- 12 gpl formaldehyde, at least 0À1 gpl aromatic primary amine, at least 0À001 gpl condensation product of an aromatic amine and an aromatic aldehyde, and a surfactant combination which includes an anionic, a cationic and an amphoteric surfactant. The aromatic amine may have Formula wherein R 1 -R 5  are C 1-4  alkyl, alkoxy, halide, H or OH and the aldehyde may have Formula wherein R is alkyl or H, Ar is aryl with up to two fused rings with or without halide or C 1-4  alkyl or alkoxy substituents and the CHO and OR groups are ortho to each other. The use of o-anisidine and the condensation product of 2-hydroxy-naphthalene-1-carboxaldehyde with o-ethylaniline is specified. Up to 0À001 gpl of a polyaromatic disulphonic acid or salt may be included e.g. disodium naphthalene-2,7-disulphonate. The surfactant combination may be a blend of (1) tetrasodium-N-(1,2-dicarboxyethyl)-N- octadecyl sulphosuccinamate; (2) diosodium N, N- dicarboxymethyl-2-undecyl imidazoline or a sulphated tertiary amine and (3) a polyethoxylated benzylphenol or #-naphthol. The Pb and Sn may be present as fluoborates or methane sulphonates with HBF4 or H 2  SiF 6  to maintain acidity. Optional additions include H 3 BO 3  and alkanols.
Patent GB-721126-A (GB)
Title: Improvements in or relating to gas burners
IPC: D06M13/152
Filed: 1953-08-14
Abstract: 721,126. Igniting burners. BROWN, BOVERI & CO., Ltd. Aug. 14, 1953 [Aug. 15, 1952], No. 22465/53. Class 75 (3) A gas burner especially for a gas turbine combustion chamber comprises a gas nozzle 3 for discharging gas through an annular outlet 4 radially outwardly into a swirling stream of combustion air supplied through an inlet 7 and a swirling element 6, and the resulting air/gas mixture is maintained in an ignitible condition by hot gases from a chamber 8 which surrounds the nozzle 3, and in which gas supplied through a pipe 9 and openings 10 is burnt in air entering through openings 11. An oil nozzle may be mounted coaxially with the gas nozzle 3 so that gas and/or oil may be burnt.
Patent GB-647945-A (GB)
Title: Improved feeder mechanism for nailing machines, particularly for the production of footwear
IPC: A43D71/00
Filed: 1946-07-29
Abstract: 647,945. Nailing. BATA, NARODNI PODNIK. July 29, 1946, No. 22497. Convention date, Oct. 30, 1943. [Class 89(iii)] In a machine in which nails from a hopper 3 slide down raceways 19 and are inverted by rotary discs 25, two parallel nail-receiving slots are provided in each disc on opposite sides of its axis. From the disc 25, the nails pass into holes 48 in a slide 49 which is moved step by step to the right until an apertured plate 61 which normally closes the holes 48 is moved by an abutment 65 against a spring 64 to release the nails into delivery tubes 66. An adjustable abutment 69 on the slide 49 cooperates with projections 47 on the disc 25 to determine the number of holes 48 to be filled. The disc 25 is operated from a cam 43, through lever 41, spring-returned rack 39, toothed segment 38 and spring-clutches 33, 35. The slide 49 is operated from a cam-controlled lever 53 through a rod 57 and yielding connection 59, 60. The hopper 3 is described in Specification 647,987.
Patent GB-929339-A (GB)
Title: Motor wheels
Inventor: MERRITT HENRY EDWARD
IPC: B60K17/04
Filed: 1959-07-01
Abstract: 929,339. Motor wheels. MERRITT & CO. ENGINEERING Ltd. Sept. 30, 1960 [July 1. 1959], No. 22531/59. Class (79(3) [Also in Group XXIV] A motor wheel comprises an hydraulic or electric motor 11 attached by a flange 41 to a steerable stirrup 40 of, e.g. an industrial truck, the wheel having a tyre 10 supported on a rim 16 and is mounted for rotation upon a bearing 13 fitted on a carrier 14, 14A, 14B, the main part 14 of which is attached to the motor body. A cover plate 15 is secured to the rim 16 by nuts and bolts 17 and has a cylindrical portion 20 formed with internal teeth 21. The motor shaft 12 has a detachable extension 12A formed with a pair of eccentrics 25, 25A, disposed at 180 degrees to one another, and upon which are mounted, upon bearings 24, planets 22 and 22A which mesh at diametrally opposite arcuate portions with the internally toothed annulus 20. The planets are located upon a pair of screwed bolts 29 and a pair of nuts and bolts 29A, Fig. 1, upon which are mounted sleeves 26 upon needle roller bearings 28, the sleeves 26 being located in apertures 27 whose diameters exceeds those of the sleeves by twice the eccentricity of the portions 25, 25A. When the motor rotates, the planets gyrate about the axis of the motor, their axes moving in a circular path of radius equal to the eccentricity of the portions 25, 25A, and, being in mesh with the annulus, after each revolution of the motor, the annulus will have rotated by an amount corresponding to the difference in the number of annulus teeth and the number of planet teeth, giving a reduction ratio. The planets being on eccentrics disposed at 180 degrees, a dynamic balance is obtained.
Patent GB-959701-A (GB)
Title: Improvements in or relating to pressure fluid control means for internal shoe drum brakes
IPC: F16D65/14
Filed: 1961-06-22
Abstract: 959,701. Internal shoe-drum brakes. FABBRICA ITALIANA MAGNETI MARELLI S.p.A. June 22, 1961 [June 24, 1960], No. 22581/61. Heading F2E. An internal shoe-drum brake is actuated by a wedge member 5, 20, Fig. 1, movable by a piston 2 in a pneumatic cylinder 1, rollers 7 carried by a movable cage structure 11, 13 being interposed between plungers 8 engaging the shoe-ends (not shown) and the wedge surfaces of the member 5. The piston 2 is provided with a return spring 6 which also ensures the seating of the hemispherical end of the member 5 in a corresponding recess 4 in the piston 2, and the cage structure for the rollers 7 comprises a pair of metal plates 11 having slots 24 for reception of arbors 22, Fig. 2, of the rollers 7, the plates 11 being guided by discs 12 13 and bent over to engage the disc 13 which is slidable in a housing 14 against the action of a spring 15 located between the discs. On downward movement of the wedge member 5, the rollers 7 are moved downwardly and outwardly to move the plungers 8, the plates 11 together with the disc 13 are also moved downwardly against the action of spring 15 which subsequently returns the plates 11, disc 13 and rollers 7 to the rest position. Threaded rings 9 with notched collars and screws 10 provide fit adjustment of the brakes, each ring 9 being retained in adjusted position by a flat spring 16 engaging one of the notches of the adjusting ring.
Patent GB-877206-A (GB)
Title: Improvements in and relating to automatic gain control in transistor radio receivers
IPC: H03G3/30
Filed: 1960-06-28
Abstract: 877,206. Transistor automatic gain control circuits. GENERAL MOTORS CORPORATION. June 28, 1960 [July 13, 1959], No. 22605/60. Addition to 836,103. Class 40(6) In a transistor superheterodyne radio receiver, the automatic gain control voltage is derived from a separate detector and applied to an I.F. amplifier, a delayed control voltage being derived from the output of that amplifier and applied to an R.F. stage. The Figure shows a receiver comprising a PNP transistor R.F. stage coupled through a tuned network 14, 18, 20 to a frequency changer 16 which feeds NPN I.F. stages 22 and 40. The latter stage has a double tuned output circuit 38, 112 and feeds a second detector stage 116, D3. The AGC voltage is derived froma separate detector 36, D2 and is applied through a resistor 34 to the first I.F. stage 22 to control its gain. An amplified gain control voltage is obtained from a point B in the collector circuit and applied through a resistor 76 to the R.F. stage. This voltage is derived from a resistance network 58, 60, 78 and a diode D1. When the signal is small, diode Dl conducts and clamps the potential of B to the potential of C but when the signal increases above a certain level the current through transistor 22 is so reduced that diode Dl no longer conducts and the potential at B varies with the level of the incoming signal. Accordingly the application of the control voltage to the R.F. stage is delayed.
Patent GB-517736-A (GB)
Title: Improvements in dry shaving machines
IPC: B26B19/28
Filed: 1938-07-29
Abstract: 517,736. Motors. AMSLER, M. July 29, 1938, No. 22675..[Class 35] The cutter element of a dry shaver is driven by an electric motor provided with a switch to vary the connections of the field winding and so adapt the motor for operation on at least two different supply voltages. As shown, a soft iron armature A rotates between the poles of a field magnet F and operates by means of a cam k a contact lever l, the contacts n being in the circuit of the field winding. The field winding consists of three sections w1, w2, w3 connected to the contacts p1, p2 of a switch o in such a way that when the motor is to operate on a low voltage, say 110 volts, the switch is set on the contact p1. and the windings w1, w2, are in circuit. For operation on 220 volts, the switch is moved to the contact p2 whereby all the windings are in circuit. The winding resistances are preferably such that the field ampere turns are substantially the same on all voltages. The interrupter n is arranged with part of the field winding on each side of it and a condenser q -is connected across the supply terminals in order to reduce interference with radio apparatus.
Patent GB-723472-A (GB)
Title: Improvements relating to electronic voltmeters
Inventor: HARMER JOHN DAVID
IPC: G01R17/16
Filed: 1952-09-10
Abstract: 723,472. Valve amplifying circuits. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 10, 1953 [Sept. 10, 1952], No. 22760/52. Class 40 (6). In a D.C. valve voltmeter provided with feedback by means of a cathode resistor Rc there is also included a CR in series feedback circuit to damp transient input signals. In the Figure transient input signals at I are fed back through C and appear at the CR junction A in opposition to the input so that the output O is not effected. The value of the output O is dependent on the setting of the tapping on supply potentiometer P and the point of connection to the anode resistor Ra.
Patent GB-1248279-A (GB)
Title: Laser-type goniometric arrangement
IPC: G01B21/22
Filed: 1969-05-05
Abstract: 1,248,279. Measuring rotation. COMPAGNIE GENERALE D'ELECTRICITE. 5 May, 1969 [6 May, 1968; 7 May, 1968], No. 22849/69. Heading G4H. [Also in Division H1] To measure the angle # through which a support carrying a ring laser has rotated after a time t, the number of pulses n 1  emitted by a cell 34 (Fig. 1) sensing an index 33 on a disc 30 rotating in the path of the laser beam after multiplication by a factor q (q being the number of beat pulses sensed by a photo-cell 18 for one revolution of the laser support) is subtracted from the number N 1  of beat pulses sensed by cell 18 during the time t to give an output N 1  - n 1 q proportional to #. In the embodiment described the ring laser has windows at Brewster incidence and is associated with a triangular optical cavity defined by reflecting mirrors 14, 15 and semi-transparent mirror 16, the latter directing light on to the cell 18. The light from the laser is directed at an angle a through the rotating disc 30 at a distance R from its axis of rotation. The motor driven disc has a single reflecting index light from which is sensed by a photo diode 34. The number q of beat pulses corresponding to one revolution of the disc 30 is stored in memory 58 (Fig. 3). After n 1  rotations of the disc, counter 65 sets monostable 66 to its "1" state to enable gate 60 so that the contents of memory 58, i.e. q multiplied by the count in counter 56, i.e. is n 1 , is stored in register 61. Simultaneously gate 52 is enabled to transfer the contents of counter 51 receiving the beat pulses N 1 . Monostable 66 then resets to close the gates 52, 60 and after differing delays # 1 , # 2  enables gates 54, 62 to feed the contents of the registers 53, 61 to subtractor 55, the output from which represents #. The procedure may be repeated after a further n 1  revolution of the disc. The member 69 receiving the subtractor output can be an adder to accumulate the angular position of the support relative to a datum or if the laser support is for example a ship the subtractor output may be fed to a coarse corrector. In a modification (Fig. 4, not shown) the speed and direction of rotation of the disc is controlled by the frequency of the beat pulses two cells (129, 130) sensing the amount and direction of rotation of the disc and supplying one input to a subtractor (133) the other input being derived from a counter (132) of beat pulses. The subtractor output is divided by the scale factor of the ring laser.
Patent GB-729482-A (GB)
Title: Improvements in or relating to sun-glass and like attachments for spectacle frames
Inventor: CALLENDER LEONARD JOSEPH
IPC: G02C9/04
Filed: 1952-09-11
Abstract: 729,482. Sun-glasses &c. BITTNER, Ltd., E. Sept. 10, 1953 [Sept. 11, 1952], No. 22866/52. Class 97 (1). An attachment for a spectacle frame comprises a pair of eye rims carrying, for example, light filters, lenses or devices for viewing projected stereoscopic images and mounted upon a resilient bridge member so as to be slidable therealong to suit the attachment to spectacle frames of different widths. As shown, each rim 21 has a projection 15 having a rectangular slot in which slides a correspondingly shaped bridge 12, the bridge and rims carrying clips 19, 20 respectively to engage a spectacle frame. Alternatively, the clips may be carried by the rims only.
Patent GB-1130109-A (GB)
Title: A method and apparatus for applying a coating liquid to a moving support
IPC: G03C1/74
Filed: 1967-05-17
Abstract: 1,130,109. Coating webs. FUJI SHASHIN FILM, K.K. 17 May, 1967 [19 May, 1966], No. 22893/67. Heading D1L. In the coating of a continuously travelling web 2 by an extrusion device 1 an electric field and a magnetic field are applied to the bridge of coating material 6 formed between the extrusion device and the web. A hollow back-up roller 4 of non-magnetisable material supports the web and has a stationary magnet 5 mounted therein. A high voltage generator 7 in conjunction with roller 4 gives an electric field to the bridge 6, the coating material 3 being electrically earthed.
Patent GB-461274-A (GB)
Title: Manufacture of calcium cyanamide
IPC: F01D5/10
Filed: 1935-08-14
Abstract: In obtaining calcium cyanamide by the process described in the parent Specification, dust-like calcium carbide in admixture with an inert diluent is subjected to the treatment with nitrogen. Suitable diluents are calcium cyanamide in granular form, lime or magnesium oxide.
Patent GB-777729-A (GB)
Title: Improvements in or relating to sorting devices, for rapid sorting of office papers and any small articles
Inventor: WOOD CHARLES GERALD
IPC: B42F17/02
Filed: 1954-08-06
Abstract: 777,729. Filing papers. WOOD, C. G., and WOOD, P., [trading as SORTERGRAF CO.]. June 15, 1955 [Aug. 6, 1954], No. 22953/54. Class 146(1). A sorting device for papers comprises a base a and a plurality of separator plates f freely slidable along the base, each plate f having at its bottom a projecting part g having lateral inward recesses h and a medial upward recess i and the base a having lateral walls b inturned at c and an upstanding rib e to loosely engage the recesses hand i respectively to retain the plate f on the base and permit free sliding. The projecting part g may be cased in a strengthening member of similar shape rivetted thereto. Specification 395,753 is referred to in the Provisional Specification.