baber/WOPTO huggingface dataset:
Patent GB-840666-A (GB)
Title: Improvements in or relating to amplifiers employing transistors
Inventor: HELLIWELL BRIAN STANLEY
IPC: H03F1/34
Filed: 1957-03-01
Abstract: 840,666. Transistor amplifier circuits. BRITISH TELECOMMUNICATIONS RESEARCH Ltd. Feb. 21, 1958 [March 1, 1957], No. 6925/57. Class 40(6). A transistor amplifier comprises a number of stages, each of unity current gain, with the coupling between pairs of stages comprising step-down transformers. Each stage comprises a pair of resistance-capacity coupled transistors T5, 6 in common-emitter connection, the output being taken from the second by means of a transformer TR4. The current gain of the amplifier is made unity by feeding back the output current at the emitter of transistor T6 to the input, via condenser C3: the gain is stabilized by resistor Rl in series with the input and large relative to the input impedance variable positive feedback for gain control purposes may be derived from a resistor in series with the output transformer TR4, being applied to the input side of condenser Cl. The first transistor T5 may alternatively be used in the common base connection.
Patent GB-889625-A (GB)
Title: Improvements in or relating to clutches and couplings
IPC: H02K49/06
Filed: 1959-02-27
Abstract: 889,625. Magnetic couplings. GENERAL ELECTRIC CO. Ltd., and POLGREEN, G. R. Feb. 26, 1960 [Feb. 27, 1959], No. 6933/59. Class 35. In a magnetic coupling a permanent magnet 11 having annular polepieces 12, 13 surrounds and excites two coaxial, disc-shaped rotors which have axially-directed peripheral teeth which, when aligned, provide low reluctance flux paths between the magnetic polepieces. The magnet comprises barium ferrite and the polepieces 12, 13, which are of laminated mild steel may also contain a coil 15 which bucks or boosts the magnetic flux and so controls the coupling effect. The rotors comprise two identical non-magnetic, e.g. brass, or aluminium, disc-shaped members 5, 6 provided with peripherally-mounted silicon steel U- shaped projections 7 on their adjacent inner surfaces. Alternatively, the projections may be formed by silicon steel stampings cemented with epoxy resin into peripheral radial slots in each disc. The projections on the driving and driven members tend to align to offer the path of least reluctance and thus torque is transmitted from one member to the other. Beyond an upper limit the coupling slips and alternating current is induced in coil 15 and the slip energy may be dissipated in a resistance 16 or fed to an external circuit and rectified for charging the battery 18 which supplies the coupling control current to the coil 15.
Patent GB-491852-A (GB)
Title: Improvements in typographical slug casting machines
IPC: B41B11/52
Filed: 1937-03-09
Abstract: 491,852. Type-bar-making machines. WALKER, V. E. (Ellis, H.) March 9. 1937, No. 6939. [Glass 100 (iii)] Assembling and distributing matrices.- A machine for casting from hand - composed matrices is adapted to receive a line of matrices, to cast a slug therefrom, and thereafter to deliver the matrix line to a point adjacent to, or within easy reach of, the point of insertion, all of the movements being performed in timed relation. A hand-stick containing the line is placed on a shelf 3, Fig. 1, between guides 5, 6, and is pushed back into the path of a finger 10 secured to the transfer slide-bar 11. Depression of a button 34 releases the transfer-slide, which carries the line into the first elevator 1. If the elevator is not in receiving position, the passage of the line is obstructed by a sliding bar 13, Fig. 5, which is projected into its path by a spring. The bar 13 can be held retracted by a second bar 15 sliding at right-angles to it and connected to it by a pin engaging in an inclined slot. When the elevator is in linereceiving position, a roller 20 mounted on it acts through a lever 16 and the bar 15 to hold the bar 13 retracted. As the elevator descends to the casting position, the roller 20 passes off the lever 16, and the bar 13 returns into obstructing position. Before the upward movement of the elevator, the roller 20 is moved out of line with the lever 16 by a fixed cam 38, and, in the delivery position of the elevator, the roller is moved back into line with the lever by a second cam 39. Means such as a spring bolt are provided to retain the line in the elevator, the bolt being pushed back by the hand-stick as it passes. When the elevator reaches the line-delivery position, the hand-stick is removed therefrom by the delivery-slide 21, Fig. 1, a, retaining catch 22 for the slide being tripped by the elevator. The hand-stick is carried on to an inclined delivery-shoot 32, down which it slides into contact with a buffer 33 in readiness for removal. Before reaching the shoot, the stick passes over a pivoted rail 28, which is tilted into line with the shoot by an angle-member 25 on the delivery-slide. The stick is temporarily arrested by a buffer, from which it escapes when the rail tilts. Instead of the hand-stick passing through the machine, the line may be removed from it by the transfer-slide.
Patent GB-1167645-A (GB)
Title: Production of Acetals of Methylglyoxal
Inventor: MASCHKE ARTHUR
IPC: C07C45/71
Filed: 1967-02-14
Abstract: 1,167,645. Acetals of methylglyoxal. BADISCHE ANILIN- & SODA-FABRIK A.G. 14 Feb., 1967 [15 Feb., 1966], No. 6974/67. Heading C2C. Acetals of methylglyoxal are made by reacting a mixture of acetone and a monohydric or dihydric alcohol of 1-20 (preferably 1-6) carbon atoms with a nitrosating agent, such as nitrous acid, nitrogen trioxide or an alkyl nitrite, in the presence of an acid catalyst.
Patent GB-1047058-A (GB)
Title: Production of bis (3-chloro-4-hydroxyphenyl) alkanes
Inventor: BILIK ITA MENDELEEVNA
IPC: C07C37/62
Filed: 1964-02-20
Abstract: Bis-(3-chloro-4-hydroxyphenyl) alkanes are made by reacting bis(4-hydroxyphenyl)alkanes with SO2Cl2 in the presence of catalysts which either contain the -SH group, or yield it during the reaction. Specified catalysts are Na2S, MeSH, HSCH2CO2H and CS(NH2)2. Specified products are the cyclohexane (1,1-substituted), propane (2,2) and pentane (3,3).
Patent GB-1499753-A (GB)
Title: Manufacturing aids
IPC: B23Q3/10
Filed: 1975-02-20
Abstract: 1499753 Workpiece clamping; jigs; grinding MAUSER-SCHAERER GmbH 20 Feb 1975 [21 Feb 1974] 7103/75 Headings B3B B3C and B3D [Also in Division G1] A workpiece clamping fixture 1 for use in a module clamping system for work to be machined, e.g. by milling, drilling or grinding, or for measuring a workpiece, comprises an L- shaped body whose surfaces have machined recessed areas ld to produce raised contact areas le, and whose geometric proportions provide a height and depth of the vertical side and the length and depth of the horizontal side equal at dimension a, and the width of the vertical side and the height of the horizontal side equal at dimension 0À5a, and the fixture is provided in all of its sides with a plurality of holes of different diameters. Some of these holes are plain through holes 1a, some are tapped holes 1c, a large hole 1b is used to receive e.g. hydraulic or pneumatic jacks, and some holes intersect at right angles with other holes internally. Varied uses of the fixture 1 are described including; (a) (Fig. 15) clamping hydraulically a series of workpieces 15b between end fixtures 1 acting as abutments during a milling operation; (b) (Fig. 18) constructing a drill jig for drilling a workpiece 18e which is fluid pressure clamped between blocks 11 and 18(d); (c) (Fig. 22) a sine bar mounting in which a workpiece 22 is clamped hydraulically against the fixture 1 and a block 22d; and (d) (Fig. 23) a mounting for workpiece 23d between centres 23a in a measuring jig in which dial gauges 23f engage machined parts of the workpiece. Various other blocks, V-blocks, and tables with T-slots, are described with common modular dimensions and hole positioning enabling various vices and clamping arrangements to be constructed. A precision measuring device is described (Figs. 24 and 24A, not shown) having vernier scales to measure the setting of a bar (24e). Fluid pressure operated clamping dogs are described (Figs 26-28 not shown). An indexable drilling jig is described in connection with Fig. 29 (not shown).
Patent GB-1122094-A (GB)
Title: Improvements in or relating to electric plug and socket couplings
IPC: H01R13/11
Filed: 1966-02-18
Abstract: 1,122,094. Two-part couplings. USINE METALLURGIQUE DOLOISE S.A. 18 Feb., 1966 [10 Nov., 1965], No. 7209/66. Heading H2E. A socket contact comprises an inner member having a plurality of inwardly-bowed resilient contact fingers which are housed in longitudinal grooves -in a surrounding metal body, the contact fingers being compressed by an inserted plug member so that the plug engages both the contact fingers and the body portions which separate them. In one embodiment, Fig. 1 and Figs. 2-6 (not shown), the body comprises a grooved tubular portion 1 fitted to a base portion 3, the inner member 2 being riveted and welded to the base 3 so that contact fingers 8 lie in grooves 9 of the tubular portion 1. In a modification (Figs. 13-17, not shown) the contact fingers (39) are housed in slots between partitions (31) which extend integrally from a base portion, a surrounding sleeve (33) being provided. In another embodiment (Figs. 20-21, not shown), the inner member has two resilient fingers (64 and 65) with rounded end portions, the surrounding body (60) being formed in one piece. In a further embodiment (Figs 22-23, not shown) a split socket extends integrally from a base portion (72) so that its fingers (71) are located between inwardly-projecting ribs (73) of a surrounding tubular member (70). In a further embodiment (Figs 24-25, not shown), wires (82) which are inclined to the socket axis lie in grooves in, a metal tube (84) and form resilient contacts, a surrounding metal tube being provided. The socket contact may be shaped to receive a plug member of rectangular-or other cross-section as in the embodiment of Figs 18- 19 (not shown). Alternatively, a plug contact comprises a resilient member with contact fingers which lie in individual grooves in the body of the plug member.
Patent GB-563823-A (GB)
Title: Process for electropolishing metal articles
IPC: C25F3/24
Filed: 1943-05-07
Abstract: 563,823. Electropolishing metals. CARLSSON, F., and RANG, N. B. E. May 7, 1943, No. 7265. [Class 41] Metal surfaces, especially of stainless steel, are electropolished in a copper sulphate bath in which mineral acids such as phosphoric or sulphuric may be present, a cathode being employed having a coating of spongy copper which may be electrolytically formed. The cathode may be of relatively small area.
Patent GB-960357-A (GB)
Title: Automatic character recognition method
IPC: G06V30/224
Filed: 1963-02-22
Abstract: 960, 357. Automatic character reading. STANDARD TELEPHONES & CABLES Ltd. Feb. 22, 1963 [Feb. 28, 1962], No. 7271/63. Addition to 949, 355. Heading G4R. Characters with distinctive striations as described in the parent Specification are identified by imaging the character on to the end of a bundle of light fibres 4 Fig. 1 which are grouped so that each group at the input end forms a mask pattern for comparison with the image, and at the output end each group forms a separate bundle applied to a photo-cell 7 to provide electric signals, the maximum of which identifies the character. The output of each photo-cell is amplified, rectified and applied to the base of a transistor 10 Fig. 2. Because of the striations, the matching group produces a signal of maximum oscillation and this causes the corresponding transistor to conduct and cut off the others. The comparator transistors are enabled by a signal from any of the amplifier outputs taken through an Or gate to a chain of three triggers which produces an enabling pulse only while the character is in the sensing station.
Patent GB-307461-A (GB)
IPC: F04B19/16
Filed: 1929-03-06
Abstract: 307,461. Caretta, E. March 8, 1928, [Convention date]. Chain pumps.-Apparatus for raising viscous liquids comprises a flexible endless band 6 running on pulleys 7, 5, of which the former is driven by hand or motor while the latter is immersed in the liquid. The liquid which is raised by adhesion to the band is removed by a scraper 9 and flows to an outlet which may be closed by a spring plate 11. The band may be perforated metal and may have small tongues cut out of the band to increase the adhesion of the liquid. The casing 1 may be mounted in the liquid reservoir by means of a plug 2. If the drum 7 is driven by an electric motor, the current to the motor may be controlled by the opening and closing of the plate 11. The driving shaft 15 may have a free-wheel connection with the drum 7.
Patent GB-930021-A (GB)
Title: Improved jib-crane
IPC: B66C23/10
Filed: 1961-02-28
Abstract: 930,021. Level-luffing cranes. TORNBORG & LUNDBERG A.B. Feb. 28, 1961 [March 1, 1960], No. 7351/61. Class 78 (4). When the jib of a tower crane 1 is luffed by a line 15 the two halves 8, 10 fold together about a pivot 9 and eventually reach the position shown in broken lines. The folding is controlled by a line 13 which wraps round a segment 12, the radius of which decreases towards its free end, so that the load hook follows a horizontal path. The jib is pivoted on a slewable mounting 6 which also carries a counterbalance arm 18 with weights 17 supported by a stay 19. In a second embodiment the stay is coupled to the jib member 8 by a linkage which raises the counterbalance arm as the jib is raised, thus, the weights 17 help to restore the jib to a horizontal position. The tower of the crane 1 may be mounted on successively higher floors 3, 4, 5 of a building in known manner.
Patent GB-431326-A (GB)
Title: Improvements in or relating to gun-mountings for aircraft
IPC: F41A23/00
Filed: 1933-05-19
Abstract: 431,326. Seats. BARNWELL, F. S., and BRISTOL AEROPLANE CO., Ltd., Filton House, Bristol. May 19, 1933, No. 7432. [Class 52 (ii)] [See also Group XXI] Relates to gun mountings for aircraft in which the gunner's seat 24 is arranged to move upwardly and downwardly in opposite sense to the gun by attaching the gun and seat to the front and rear ends of a lever 11 elevatable about an intermediate pivot 12. According to the invention, the seat is constrained as by a link 26 to move bodily in a path curved forwardly and upwardly, and means such as links 22, 25 are provided for progressively tilting the seat forwardly as it moves up and backwardly as it moves down. A suitable position and inclination of the seat is thus provided to suit each position of gun elevation or depression. The links 22, 25 form with the seat member 29 and the lever member 21 a collapsable quadrilateral linkage. The invention is shown applied to a gun mounting of the " ring type, the gun arm 11 being U-shaped and the links 22, 25 being mounted in duplicate on each side of the seat.
Patent GB-103247-A (GB)
Title: Improvements relating to Driving Chains.
IPC: F16G13/04
Filed: 1916-05-26
Abstract: 103,247. Carter, A. E., and Renold, Ltd., H. May 26, 1916. Driving-chains with separate joint pins. - In multiple-strand driving-chains of the silent type, reinforcing-links b having web portions that are not cut away to an arch shape are distributed across the breadth of the chain beside and between the arch-shaped gearing-links a in such a manner as to prevent bending of the studs and undue extension of the links a under shocks or overloads.
Patent GB-709670-A (GB)
Title: Improvements in and relating to spray nozzles
IPC: B05B1/26
Filed: 1952-03-24
Abstract: 709,670. Spray-producers. BETE FOG NOZZLE, Inc. March 24, 1952 [April 6, 1951], No. 7553/52. Class 69 (3) A nozzle producing substantially a solid cone-shaped spray includes an inlet 11 with a tapering passage 10, and a helical vane 13 providing a helical slot 12 through which the liquid is forced. A tapering core 14 is secured to the outer end of the nozzle by a nut 52 and a pin 48 which engages a groove in the vane. The upper convolutions of the vane have a tapering central passage, and are shaped as in Fig. 4, and liquid passes over the surface 15, the angle to the axis of which decreases as the convolutions approach the nozzle outer end. The lower convolutions have a cylindrical central passage, and are shaped as in Fig. 5, with the surface 15a, over which the liquid flows, also at a gradually decreasing angle to the nozzle axis. U.S.A. Specification 2,518,116 is referred to.
Patent GB-396850-A (GB)
Title: Improvements in or relating to range finding devices
IPC: F41G5/12
Filed: 1932-03-14
Abstract: 396,850. Calculating- apparatus. VICKERS-ARMSTRONGS, Ltd. and WATSON, J. P., Vickers House, Broadway, Westminster. March 14, 1932, No. 7567. [Class 106 (i).] In a range-finding device for ascertaining the range of a rapidly moving target, means are provided for correcting the observed range to compensate for the observer's time lag of perception. The correcting means shown consists of a calculating-mechanism wherein the part B<1> is set by a shaft B moving according to the ascertained rate of change of range or a function thereof, and the part C<1> is set by a shaft C in accordance with the time lag, so that the part D<1> is moved in accordance with the change of range occurring during the said time. The part D<1> rotates a shaft D which operates one element of a differential E, the other element of which is rotated by a shaft A in accordance with observed range so that the shaft F is rotated in accordance with corrected range, this shaft being connected to an indicator or recorder. The setting of the shaft C may be indicated on a dial C<2>.
Patent GB-1357116-A (GB)
Title: Cutting of glass
IPC: C03B33/09
Filed: 1971-03-23
Abstract: 1357116 Cutting sheet glass PILKINGTON BROS Ltd F M HAMER D LOWE and H W McKENZIE 7 March 1972 [23 March 1971] 7582/71 Heading C1M In the cutting of sheet glass, a point of weakness is formed in the glass, a stream of heated gas is directed through a nozzle outlet towards the point of weakness to initiate a fracture in the glass, a restraining member is symmetrically disposed about the nozzle outlet perpendicular to its axis to restrain the flow of heated gas away from the nozzle, the nozzle and glass having relative movement along a path and the temperature and flow rate of the gas being controlled to generate sufficient stress to extend the fracture along the path from the point of weak-, ness. The nozzle 16 and restraining member 20 may be separate as in Fig. 1 and the member 20 may have an inner recess or be flat. Alternatively as in Fig. 4, a tube 30 provides a flat disc base 31 as the restraining member, with a hole 32  as nozzle. The tube may be solid apart from the nozzle aperture which extends therethrough. The nozzle (16) may be guided over a suitable template by a member attached to the support 26. Vertical position of nozzle 16 is effected by a rack 23 and pinion 24.
Patent GB-1292217-A (GB)
Title: Improvements in plastics containers
Inventor: DAVIS PAUL
IPC: B65D1/26
Filed: 1970-02-17
Abstract: 1292217 Stacking containers SWEETHEART PLASTICS Ltd 17 Feb 1970 7590/70 Heading A4A A plastics container 10 is integrally formed with a false bottom 12, and a ledge 20 just above the bottom to support an end ring 17 of a further container in a stacking arrangement. The ledge is stepped out of the side of the container and so has a continuous wall portion directly beneath it, thus avoiding the shearing stresses arising when one container is supported on an inwardly extending peripheral flange, or on the base of another container. All the stress is transmitted through the supporting wall portion. Ventilation may be provided between the bottoms 12 of stacked containers by the provision of indentations across the top of the ledge 20, or in the end ring 17.
Patent GB-349666-A (GB)
Title: Improvements in or relating to propelling and steering mechanism for canal and like boats
IPC: B63H20/16
Filed: 1930-03-08
Abstract: 349,666. Detachable propelling installation for boats. YARWOOD & SONS, Ltd., W. J., YARWOOD, A., and YARWOOD, W. D., The Dock, Northwich, Cheshire. March 8, 1930, No. 7595. [Class 114.] A combined propelling, steering, and reversing unit for canal and like boats comprises a rudder a adapted to be mounted on the usual pintles d at the stern of the boat and carries the depending tube g of a transmission unit from the engine shaft m to the propeller shaft e, the transmission shaft n being geared at the top through bevel wheels with the shaft m and at the bottom through bevel wheels with the shaft e. The depending casing g is adapted to be rotated for steering and reversing by means of a cable s which passes around a pulley h at the head of the tube and thence to a pulley r<1> on a steering shaft r. The steering shaft r is mounted in brackets ql so that by swinging the shaft as a tiller the rudder unit as a whole can be moved for ordinary steering, whilst by rotating the shaft r the tube g and propeller b are rotated for steering and reversing.
Patent GB-848524-A (GB)
Title: Improvements in the manufacture of flexible wire reinforced hose
IPC: B29D23/00
Filed: 1958-03-10
Abstract: 848,524. Reinforcing hose pipe. GOODRICH CO., B. F. March 10, 1958 [April 11, 1957], No. 7615/58. Class 83 (4). [Also in Group XXVIII] A method of making flexible wire reinforced hose comprises supporting a partly built hose carcase, simultaneously wrapping upon said carcase a multiplicity of individual highly resilient wires in parallel helical convolutions while maintaining uniform equal tension in said wires, and shaping said wires to impart to each a permanent helical convoluted shape having the diameter and pitch of its neutral lay not substantially exceeding the diameter and pitch of the helical convolutions in which said wires are wrapped on the hose carcase. An unvulcanised rubber hose 11 on a mandrel 12 is supported by cradle rollers 15 and is pulled, while being rotated, through wire shaping and wrapping means 18, by a chuck 20, on a carriage 21, gripping the forward end 16 of the mandrel 12. A plurality of wires W are taped to the forward end 16 of the mandrel and are wrapped on the hose 11, by the rotational and axial movement thereof, being pulled from reels 24 through horizontal combs 28, through a circular series of holes 29 in a plate 31 which space the wires in cylindrical array, then through a series of holes 37, on a smaller circle, in a plate 36, over a ring 40, supported by the wires and around a boss 42 of a die 45 in a plate 46, on to the hose 11. The ring 40 bends the wires, which are then deflected in planes oblique to the bending and the degree of such bending is adjusted by axial movement of the plate 46 by screw means 52. After one ply has been laid, when the wires are disengaged from the hose 11 they are clamped by co-operating inner and outer rings 57, 59, Fig. 6. The carriage 21 is driven by a motor 82 thereon through a clutch and gears 74 engaging stationary racks 77. The chuck 20 is rotated by the motor 82 through variable speed means 88 and reversing gear 91, so that successive wire plies, of opposite hand, may be wound.. Grooved idler rollers 95 on levers 97 support the hose between the means 18 and the chuck 20, being raised into supporting position by rods 103 moved by levers 102 rocked by levers 107 in the path of a roller 108 on the carriage 21. Unreeling. Wire from each reel 24 passes over a pulley 127, Fig. 10, over the innermost pulley of a set 130, around the innermost pulley of a set 133, carried by a weighted lever 121 pivoted at 124, then looped over the remaining pulleys of the sets 130, 133 and then to the combs 28. A brake band 120 for the reel 24 is connected at one end through spring means 123 with the lever 121 so that rotation of the reel 24 by the wire pulled therefrom is dependent upon the tension in the wire.
Patent GB-233644-A (GB)
Title: Search-light projector for closed vehicles
IPC: B60Q1/24
Filed: 1925-03-23
Abstract: 233,644. Aero Motor-u Auto Zubehor Akt.-Ges., (Assignees of Nagele, K. F.). Aug. 9, 1924, [Convention date]. Vehicle lamps.-The lamp comprises a spherical casing 6 and a glass 7, which may be replaced by a spherical glass, as shown in dotted lines, so that the lamp forms a complete sphere.