baber/WOPTO huggingface dataset:
Patent GB-223274-A (GB)
Title: Improvements in electric relays
IPC: H01H50/20
Filed: 1923-06-19
Abstract: 223,274. Railing, A. H., Angold, A. E., and Wilson, W. June 19,1923. Electromagnetic switches; protective arrangements.-For the protection of polyphase systems against faults or unequal loading of the phases, or three or more parallel feeders sharing a load against incorrect distribution of the current between the feeders, a relay is employed with an electromagnet for each phase, or feeder arranged about a common centre and acting on a common armature to move it, in accordance with the distribution of current, and operate protective devices. The armature rocks about different pivot-points depending on which solenoids predominate and the radius of the pivot-points from the centre is made proportional to the percentage of bias required. In the arrangement shown for a three phase system, three solenoids a, b, care arranged symmetrically and are energized by the. three phases. The three corresponding cores a<1>, b<1>, c<1> are swivelly-connected to a three-armed frame d which is evenly balanced on three pivot points e', e<2>, e<3> located' as shown, or all displaced through 60‹ from the position shown according as to whether the cores are adapted to be pulled into the solenoid or thrust outwards on overload. If one of the phases is overloaded, two of the solenoids will carry a greater current than the third and the frame will tend to tilt about two of the pivot pins until the degree of unbalancing becomes great enough to overcome the bias which results from the greater leverage of the single coil about the double pivots, as compared with that of the two coils about the same pivots. This bias can be varied by locating the pivot points nearer or farther from the centre f of the frame. When the frame rocks it engages with a contact ring g and trips the protective gear. In the case of parallel feeders the wire may be divided so that, when the frame rocks, it engages with a contact which trips the circuitbreaker on the faulty feeder only. Additional stability an an increased bias may be obtained by means of a spring k pulling the frame at its centre point on to the pivots. By arranging the spring at the other side of the frame so as to have a lifting action the bias is reduced and may be made independent of the weight of the frame.
Patent GB-570337-A (GB)
Title: Improvements in or relating to electro-acoustical transducers of the moving coil type
IPC: H04R1/22
Filed: 1943-09-28
Abstract: 570,337. Sound transmitting and receiving devices. STANDARD TELEPHONES & CABLES, Ltd., and CAYFORD, M. L. Sept. 28, 1943, No. 15894. [Class 40 (iv)] The resonant chamber formed behind the diaphragm of a moving coil transmitter or receiver has acoustic damping additional to that associated with the coil slot applied to it by providing an acoustic resistance connection between the chamber and a hollow space within the casing of the instrument the connection having such acoustic impedance that both the damping and resonance frequency of the chamber are increased. The transmitter shown, Fig. 1, has a spherical case 1 to reduce directional effects and includes a circular magnet 2 having a central pole 3 and surrounding annular pole 4 provided with polepieces 7, 8 separated by the coil slot 9. The diaphragm comprises a central domed portion 10, a flat periphery 11, and an annular corrugated portion 12. Under the domed portion 10 of the diaphragm is a perforated plate 15 supporting a silk or gauze cover which affords a resistive connection between the resonant chamber immediately underneath the diaphragm and a wide channel 18 passing axially of the magnet to a hollow space inside the case 1 and surrounding the magnet. The resonant chamber is also connected with the space surrounding the magnet through the slot 9, an annular space 20, an annular gap 6, and slots 5 in the magnet, a resistance screen being inserted at the top of gap 6. A bass equalising tube 23 connects the inside and outside of case 1, and there is a silk covered grille 24 for damping the resonance chamber in front of the diaphragm. 25 is a polar equalising screen. The transmitter shown in Fig. 5 is intended for operation with a smaller frequency range than that shown in Fig. 1. The resonant chamber 134 behind the diaphragm is larger, having a lower resonant frequency, and the resistive screen 117 through which chamber 134 is connected to the hollow space is mounted within the top of the passage 131 through the inner pole of the magnet. The passage 131 constitutes the whole of the hollow space connected with the resonance chamber and the coil slot 109 is sealed off from the space 131 by filling the gap or space 127 between the poles with a solidifying compound, for example, styrene. Specifications 333,578, [Class 40 (iv)], and 382,668 are referred to.
Patent GB-1476551-A (GB)
Title: Synthetic resin of styrene isobutylene and 1,3-butadiene
IPC: C08F236/00
Filed: 1975-04-17
Abstract: 1476551 Styrene copolymers GOODYEAR TIRE & RUBBER CO 17 April 1975 [13 May 1974] 15895/75 Heading C3P A resinous copolymer of 50-75% by wt. of styrene, 15-40% of isobutylene and 5-30% of butadiene with a weight ratio isobutylene: butadiene of 0À6-4À1 having a softening point of 60-110 C. is obtained by polymerizing a mixture of 45-70% styrene, 10-35% isobutylene and 8-35% butadiene, the mol weight ratio isobutylene : butadiene being 0À5-3 : 1 in the presence of aluminium chloride or ethyl aluminium dichloride and a solvent which is a C 6 -C 8  aromatic or C 3 -C 7 , aliphatic hydrocarbon containing 50-200 ppm of dissolved water.
Patent GB-319809-A (GB)
Title: Improvements in or relating to picture and the like facsimile telegraph transmitters
IPC: H04N1/06
Filed: 1928-05-31
Abstract: 319,809. Wright, G. M. May 31, 1928. Copying-telegraphs. - In a picture-telegraph transmitter, particularly of the type described in Specification 276,339, in which light scattered from a point on the picture affects a light-sensitive element, the same moving lens or equivalent optical device is used for concentrating the light on the picture and collecting the scattered light. Light from a source S, Fig. 1, is collimated by a lens C, reflected by prism 3, and focussed at 5 on to the message form 6 by a lens 48, the prism 3 and lens 48 being mounted in a rotating tube 2. Light reflected from 5 passes back through lens 48 and prism 3 and is reflected bv prism P on to a photo-electric cell E. Prism P may be replaced by a plane mirror extending across the tube 2, and having a central hole through which light from S may pass. In modifications (not shown) the incident and reflected beams lie above and below the axis of rotation x, x, the prism 3 being sufficiently large to divert both beams. The lens 48 may be interposed in the two beams on the side of the prism 3 remote from the reflecting point 5, and thus may be stationary.
Patent GB-1086811-A (GB)
Title: Reversible plough with three-point attachment
IPC: A01B3/421
Filed: 1965-04-14
Abstract: 1,086,811. Agricultural implements. J. A. BRAUN. April 14, 1965 [Aug. 21, 1964], No. 16000/65. Heading A1B. A reversible plough comprises a rotatable shaft formed in two portions 3, 6 pivoted together by means of a pin 5, a pawl 9 being provided so that the two shafts can be locked in an angular position. As shown the pawl 9 abuts against a face 10 and drops by gravity as the plough is rotated. Screws mounted on the shaft 6 limit the pivotal movement of the shaft 6. The shaft 3 is rotatably mounted in a frame 1 which is attachable to a tractor three point linkage.
Patent GB-420450-A (GB)
Title: Improvements in expansible boot-trees
IPC: A43D3/14
Filed: 1933-06-02
Abstract: 420,450. Boot trees. BRAUNSTEIN, B., 109, Guilford Street, Russell Square, London. June 2, 1933, No. 16045. [Class 17 (iii)] In a tree of the kind in which a fore part a is connected by a link f with a heel part q which forms with the link a toggle joint whereby the tree may be contracted and expanded, a wedgeshaped sole portion b is provided in the fore part of the tree linked to means mounted on the link f for slidably advancing the wedge b for forcing the fore part a against the upper. This means may comprise a lever k actuated by a screw n. The wedge b is guided by a slot engaging a cross bar d. In a modification, the link f is in two parts pivoted together with limited relative angular movement. In another modification, the link is screw-threaded to engage a nut which advances or retracts the link l. According to the Provisional Specification, the heel part may slide on a link pivoted to the fore part and be urged rearwardly by a spring. The wedge may be thrust forward on the heel part being pressed into position. The link may be provided with a plurality of apertures for reception of the pivot pins. The fore part may be adjustable in width.
Patent GB-686155-A (GB)
Title: Improvements in or relating to negative temperature coefficient resistors
IPC: H01C7/04
Filed: 1951-07-06
Abstract: 686,155. Metal oxide resistors. PHILIPS ELECTRICAL INDUSTRIES, Ltd. July 6, 1951 [July 10, 1950], No. 16081/51. Class 37. Specification 649,985 discloses a process of making negative temperature coefficient resistors which consists in sintering Fe 2 O 3  with TiO 2 ZrO 2  or SnO 2  to produce mixed crystals of Fe 2 O 3  and F e O with TiO 2 ZrO 2  or SnO 2 . To produce resistors of greater porosity but within density limits 85 to 60 per cent of theoretical density the present Specification introduces modifications to this process and these consist in pre-firing the Fe 2 O 3  alone or the chosen oxide mixture or simply adding a material such as carbon which evaporates or burns during the sintering. The Specification gives four manufacturing examples including prefiring Fe 2 O 3  at 1200‹ C. for varying periods and one example involving the addition of 5 per cent carbon; the density percentages obtained within the required limits are stated.
Patent GB-453183-A (GB)
Title: Improvements in delivery mechanism for use in delivering the products of printing machines in counted batches
IPC: B65H33/10
Filed: 1935-06-04
Abstract: 453,183. Delivery apparatus for printing-machines. QUICK, C. G., BALL, D. A., and WHITEHEAD, W. A., 109, Borough Road, London. June 4, 1935, No. 16122. Addition to 424,422. [Class 100 (i)] In a rotary-fly delivery apparatus for printing-machines in which the part of the conveyer 1 receiving the products moves in the same general direction as the delivery side of the fly 4, the devices for separating the products into counted batches comprise pairs of abutment members 8, 9, operated so that in the normal position thereof the abutments 8 remove the products from the fly, and in an alternative position taken up at predetermined intervals, the abutments 9 engage a product after it has travelled further than the preceding products, so as to deposit it on the conveyer in an irregular position. As described, two pairs of abutments 8, 9 are employed, each pair being mounted on a rod 6, and both rods being secured to a crossshaft 7 journalled in adjustable end brackets 11. A crank 13 on the end of the shaft 7 is pivoted to a link 15 slotted to engage over a shaft 17 carrying a disc 18 with a cam slot 191 in which runs a roller 20 on the link 15. Inwardly-projecting parts 19<2> of the cam slot cause the required movement of the members 8, 9. In order that the parts 19<2> may pass quickly through their operating positions, the shaft 17 may be driven by a variablespeed gearing as described in the parent Specification or the disc 18 may be made of large diameter.
Patent GB-1058984-A (GB)
Title: Indolyl amides
IPC: C07D209/28
Filed: 1964-04-20
Abstract: The invention comprises compounds of formula <FORM:1058984/C2/1> wherein R1 is a substituted or unsubstituted aromatic or hetero-aromatic radical having one ring or two fused rings, one of which is 5 or 6-membered, R2 is a hydrogen atom or a C1- 8 alkyl, C2- 8 alkenyl, cycloalkyl, aryl or aralkyl radical, R3 is a hydrogen atom or a C1- 5 alkyl, C2- 5 alkenyl or benzyl radical and R13 is a hydrogen atom, or R3 and R13 in combination form a cyclopropane ring, R4 is a C1- 5 alkyl, hydroxy-C1- 5 alkyl, polyhydroxy-C1- 5 alkyl, aminoalkyl, trifluoromethylphenyl, alkoxyalkyl, carboxyalkyl, benzyloxycarbonylalkyl, dialkylaminoalkyl, aryl, alkoxyaryl, haloaryl, aralkyl, cycloalkyl, N - methyl - 2 - piperidyl - methyl, N - methyl - 2 - pyrrolidinyl - methyl, N - methyl - 3 - piperidyl or N - methyl - 3 - pyrrolidinyl group and R5 is a hydrogen atom or a group R4, or the group -NR4R5 forms a heterocyclic ring in which any second nitrogen atom may be substituted by an alkyl, hydroxyalkyl or phenyl group, or the group -NR4R5 is the residue of an optionally acylated amino-sugar, and each of R6 and R7 is a hydrogen or halogen atom or a C1- 5 alkyl, C1- 5 alkoxy, mono-dior trihalo-C1- 5 alkyl, hydroxy-C1- 5 alkyl, nitro, amino, C1- 5 alkylamino, di(C1- 5 alkyl) amino, cyano, aminomethyl, C1- 5 alkylaminomethyl, di(C1- 5 alkyl) aminomethyl, mercapto, C1- 5 alkylthio, benzylthio, mono- or di-(C1- 5 alkylsulphonamido, arylamino, sulphonyl, sulphinyl, carboxy, carbalkoxy, substituted aminomethyl, N-C1- 6 alkyl-C1- 6 acylamino, N-C1- 5 hydroxyalkyl-C1- 6 acylamino, aryl, aryloxy, hydroxy, or N-heterocyclyl gtoup, and their preparation by (a) 1-acylation of an indolylcarboxylic acid amide, or (b) reaction of a 1-acyl-indolyl-o-carboxylic acid halide with an appropriate amine, or (c) reduction of a nitrosubstituted product to an amino-substituted product, which may then be reacted with an alkyl halide, an alkyl dihalide, an acylating agent or an isocyanate.  Indolyl-carboxylic acids and esters, and their 1-acyl derivatives, may be prepared as described in Specification 997,638.  The compounds of the invention have analgesic, anti-inflammatory and anti-pyretic activity and may be used in pharmaceutical compositions in combination with a carrier, for example in forms suitable for oral, parenteral or rectal administration.
Patent GB-1524746-A (GB)
Title: Electrical controller
IPC: G05F1/38
Filed: 1977-04-04
Abstract: 1524746 Automatic current control INTERLAS WELDING PRODUCTS Ltd 4 April 1977 [22 April 1976] 16268/76 Heading G3R The current in a plasma arc welding or lighting system is controlled by regulating the current in a magnetic amplifier control winding 10. The current is sensed by a feedback resistor R87 which supplies a signal to an amplifier IC7, thereby controlling series transistors Q2, Q3 by way of a drive transistor Q1. The amplifier IC7 also receives a pre-set signal from a potentiometer R73 and a control input at a terminal 13. The control input is derived from a further integrated circuit arrangement, Fig. 2 (not shown), and consists of a maximum current limiting signal and a control signal which is set manually or set automatically so as to vary the welding current in a desired manner, e.g. linearly.
Patent GB-386223-A (GB)
Title: Improvements in or relating to electric lamp holders
IPC: H01R33/46
Filed: 1932-06-10
Abstract: 386,223. Electric lamp holders. SAVARY, A., 49, Boulevard Victor Hugo, Clichy, Seine, France. June 10, 1932, No. 16430. Convention date, Nov. 26, 1931. [Class 39 (ii).] A holder for an incandescent lamp is made of insulating material and is divided longitudinally into two parts secured together by a screw or otherwise. The Figure shows a holder consisting of two parts 12, 13 enclosing a block 10 carrying the contact 11 and secured by a bolt 19 and nut 21, which may be locked by a flexible washer 25 bent over portions of the holder as shown. Instead of the bolt 19 the portions may be held together by the shade ring or the screwed cap securing the cord grip. The holder may be provided with the usual bayonet slots or may be formed with holes 16 into which the lamp pins are inserted when the parts are fitted together. The holes 16 may be replaced by recesses in the inner side of the casing.
Patent GB-987005-A (GB)
Title: Improvements in the mounting of photographic prints
IPC: A47G1/14
Filed: 1963-04-26
Abstract: 987,005. Mounting photographs. W. E. BURNS. Jan. 21, 1964 [April 26, 1963; July 25, 1963], Nos. 16487/63 and 29548/63. Heading A4X. A photographic mount comprises a cardboard sheet 1 having its face 2 covered with adhesive on which is laid a piece of paper 3 having one face 4 coated with a self-adhesive layer on which is laid a sheet 5 of protective paper such as siliconetreated paper. To mount a print the sheet 5 is peeled off and the print pressed on the layer 4. If the print 10 is smaller than the exposed area a mask 11 is fixed to the exposed marginal area. The self-adhesive layer may have a scored outline to facilitate alignment of the photograph. In a modification (Fig. 8) the protective sheet is divided into two parts 22, 23 by a wavy line cut 24 and on the outside of sheet 5 is printed a print fixing area defined by lines 25, 26, 27.
Patent GB-1141611-A (GB)
Title: A transformer with a coupling coefficient which can be varied by means of a control current
IPC: H03K3/51
Filed: 1966-04-15
Abstract: 1,141,611. Controlled non-linear inductors. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 15 April, 1966 [22 April, 1965], No. 16540/66. Heading H3B. [Also in Division H1] Application of a pulse or A.C. voltage to input winding E produces no effect in output winding A, which is at right angles to input winding E and bisects and is bisected by it, unless twopart control winding S a , S b  carries a current or is pulsed. When those webs of magnetic core K which are surrounded by winding S a , S b  are magnetically fully saturated, in consequence of such a current or pulse, coupling between the input and output windings is at its greatest, while intermediate magnetization produces intermediate degrees of coupling. Undesired direct coupling between the control winding and the others can be avoided by series connection in opposition of the parts of the control winding, for example by using two partial cores with partial control windings so arranged, placed one above the other and wrapped by one set of input and output windings. Core K may be as shown in Fig. 1, or may have four sector-shaped holes, or be built-up, with rectangular holes and outline and with windings arranged to pass through the rectangular holes. The core K may consist of a stack of laminations or consist of a soft magnetic ferrite. Embodiments which may be used to make connections in gate circuits, to modulate high frequencies in amplitude, to measure current and to amplify a signal are mentioned, the core material and configuration and any bias magnetization present in the core being varied in accordance with the effect desired.
Patent GB-515456-A (GB)
Title: Improvements in or relating to spring assemblies or spring fillings
IPC: A47C27/07
Filed: 1938-06-02
Abstract: 515,456. Spring upholstery. PLATTE, R., (trading as EPEDA-WERKE R. PLATTE). June 2, 1938, No. 16602. Convention date, June 29, 1937. [Class 52 (iv)] ] The intermediate turns of cylindrical springs b, b' in an upholstery assembly are interconnected by rigid strip-metal clips c, adjacent springs being preferably oppositely wound.
Patent GB-777932-A (GB)
Title: Improvements in methods of producing elastic impression compositions
IPC: A61K6/90
Filed: 1952-07-03
Abstract: An impression composition for dental purposes comprises a slightly soluble carbodiimide which is used in reaction with a water soluble alginate or pectate with a metal salt in the presence of an accelerator or retarding agent.  The preferred carbodiimides are those of zinc and lead.  In examples, in addition to sodium alginate, the composition consists of :-(1) Zinc carbodiimide, potassium-titanium fluoride, barium sulphate, sodium pyrophosphate, and kieselguhr; (2) lead carbodiimide, potassiumtitanium fluoride, tertiary sodium phosphate, titanium dioxide and heavy spar: (3) lead carbodiimide, sodium silicofluoride, sodium pyrophosphate, and kieselguhr; (4) lead carbodiimide, sodium silicofluoride, disodium triglycolamidate, kieselguhr and heavy spar.
Patent GB-1175835-A (GB)
Title: Surface Treatment of Cellular Materials
Inventor: WINCHCOMBE JOHN JEREMY
IPC: C08J9/34
Filed: 1966-04-16
Abstract: 1,175,835. Embossing. DUNLOP CO. Ltd. 14 April, 1967 [16 April, 1966], No. 16762#67. Heading B6J. [Also in Division C3] An embossed surface skin is formed on a cellular material by applying the latter to a support member, which may be an endless metal belt having an embossing pattern thereon, and heating the belt to a temperature sufficient the cause fusion at the surface of the material with which it is in contact, the heat transferred being regulated to maintain the internal structure of the material, and cooling the cellular material and support member while they are still in contact to a temperature below the fusion temperature of the cellular material.
Patent GB-1271883-A (GB)
Title: Epoxy resin composition and its use for the treatment of polyester fibers
IPC: C08J5/06
Filed: 1970-04-08
Abstract: 1,271,883. Coating polyester cords. GENERAL TIRE & RUBBER CO. 8 April, 1970 [14 April, 1969], No. 16775/70. Heading B2E. [Also in Division C3] Polyester fibres are treated to increase their adhesion to rubber with an aqueous dip composition comprising: (A) a polyepoxide, having an epoxy equivalency of 1.5 to 2.5 and an epoxide equivalent of 90-300 which is a glycidyl ether of an aliphatic polyol; at least 50% by wt. of the polyepoxide is water soluble; (B) a polyamine having M.W. 150-600 in an amount of at least 25% by wt. of (A); (C) a rubbery terpolymer of butadiene, styrene and a minor amount of a vinyl pyridine. The composition has a total solids content of 15- 30% by weight. Examples of (B) are triethylenetetramine, tetraethylenepentamine, hexamethylenetetramine, pentaethylenehexamine and polyethyleneimine (M.W. 300-600). (C) may comprise 70 parts by wt. butadiene, 15 parts by wt. of styrene and 15 parts by wt. of 2-vinyl pyridine. After removal of excess dip from the fibres, they are heated to at least 400‹F for <2mins. The treated fibres may then be adhered to the polymer and cured.