baber/WOPTO huggingface dataset:
Patent GB-474672-A (GB)
Title: Weft fork mechanism for looms
IPC: D03D51/34
Filed: 1936-05-01
Abstract: 474,672. Weft stop-motions. NEWSHOLME, A. E., and METCALFE, C. W. May 1, 1936, Nos. 12362 and 24546. [Class 142 (i)] The hub 2 of the weft fork 2a, which is fixed on an oscillating spindle 3, is operated by a swinging lever 6 fixed on a shaft 7, acted upon by a spring, whereby it is turned in a clockwise direction. As the lay moves rearwardly (to the left), a slidable member 13 carried by a bracket 12 and acted upon by a spring 22 engages the lever 6 and turns it anticlockwise after which the member 13 slides to the left. The lever 6 raises the fork to an extent limited by a part 6b, and when the lay advances, and the lever 6 moves in a clockwise direction, the fork falls under the action of gravity. If its motion is not arrested by the weft, the hub 2 arrests the spring-controlled movement of the lever 6, and a spring-controlled lever 15 controlled by a finger 8 on the shaft 7 is so positioned as to engage an arm 17a on and rock a vertical spring-controlled spindle 17. A lever 19 thereupon operates a lever 20 controlling the starting handle 8a and the loom is stopped. A brake strap 23 acts on a brake wheel 24 being operated also by lever mechanism, whereby the stoppage is effected before the weft is beaten up. A spring 24 acts upon the hub 2. The first Provisional Specification describes an arrangement wherein a pendent lever operated by a stationary part is used. The second Provisional Specification describes an arrangement wherein a lever on an oscillating shaft is operated by a fixed bracket. It mentions the use of two forks and a connecting link for preventing jerky movements of the forks.
Patent GB-400535-A (GB)
Title: Improvements in the manufacture of tiles or slabs from ceramic, earthenware, or the like material
IPC: B28B17/00
Filed: 1933-04-28
Abstract: 400,535. Earthenware tiles or slabs. RAINFORP POTTERIES, Ltd. and GRUNDY, F. W., Rainford, near St. Helens, Lancashire. April 28, 1933, No. 12376. [Class 87 (i).] Earthenware tiles or slabs are made by extruding or otherwise forming a hollow prismatic clay body, triangular in cross section, and breaking it subsequent to firing along apical cleavage lines formed by grooves 1, thus preventing distortion during firing. Additional transverse cleavage lines 4 may be provided.
Patent GB-696520-A (GB)
Title: Improvements in moulded glass lids for dishes
Inventor: BROWN RALPH
IPC: A47G19/26
Filed: 1951-05-26
Abstract: 696,520. Handles for hollow-,ware. BRITISH HEAT RESISTING GLASS CO., Ltd. May 22, 1952 [May 26, 1951], No. 12386/51. Class 66 A handle formed on the glass lid of a vessel, for example a glass cooking vessel, comprises integrally formed upwardly and inwardly projecting limbs forming a gapped bridge spaced above the surface of the lid. Preferably the lid 10 is formed with a part-spherical depression 11 from the sides of which the two limbs of the handle spring. The space 15 beneath the handle is such as to enable the finger and thumb of a user to obtain a secure hold and the gap 13 is sufficiently small to prevent thumb or finger slipping through. The limbs, preferably of the shape shown, vary only a. little in cross-section throughout their length and there is thus little likelihood of internal stresses being set up due to cooling of the glass. Specifications 445,905 and 445,915, [both in Group XXIII], are referred to.
Patent GB-1502611-A (GB)
Title: Automatic gain control
IPC: G01S3/783
Filed: 1975-03-12
Abstract: 1502611 Optical tracker AGC system BRITISH AIRCRAFT CORP Ltd 12 March 1975 [20 March 1974] 12389/74 Heading H4D In a multi-channel automatic gain control system for use in, e.g. the signal processing stage of an optical target tracker using a quadrant static split detector in a missile servo control system each channel includes a gain control for stepping the gain through a range of predetermined values, all channels being simultaneously responsive to the output from a common gain selector, which increases the common gain value when the output from at least one channel, e.g. the sum channel, decreases below a certain detected threshold, and which decreases the common gain value when the latter output signal increases beyond a certain detected threshold. As described, pulse signals A, B, C, D from respective detector quadrants 10, are amplified and the required sum and difference signals derived to produce the three channels which each include automatic gain control in known manner. Each channel comprises six cascaded AGC sub-amplifiers El to E6. Each is arranged to be switched between zero gain and xdB by the relevant numerical digit output of up/down counter 11, the complete binary number in counter 11 defining the common gain value. Sub-amplifiers El, E2, E3, E4, E5, E6 may have a "switched-on" gain of 40, 20, 10, 5, 2À5 and 1À25 dB respectively. The output signal Y from the sum channel is compared with the predetermined upper and lower thresholds in comparator C2 and counter 11 is stepped up or down one place when the lower or upper thresholds, respectively, are exceeded. Each AGC sub-amplifier (Fig. 2, not shown) comprises an operational amplifier having a resistance in its feed back loop which is switched into the circuit by a FET (F 1) responsive to the respective binary digit output channel of counter 11. The integrate and hold circuitry is enabled by sampling gate generator 12 as described in Specification 1,445,865.
Patent GB-706502-A (GB)
Title: Improvements in and relating to copperbase alloys
IPC: C22C9/06
Filed: 1951-05-28
Abstract: A copper base alloy contains not less than 55 per cent. copper, 4 to 22.5 per cent. nickel, 4 to less than 20 per cent. zinc and .5 to 3.5 per cent. cadmium, the quantity of nickel not exceeding twice the quantity of zinc.  It may also contain .01 to 2.5 per cent. iron, and, as optional elements, .01 to 3 per cent. lead, .01 to 5 per cent. rhodium, and .01 to 3 per cent. silicon, manganese, titanium, vanadium, beryllium and/or molybdenum, the total quantity of optional elements not exceeding 10 per cent.  The alloy may be produced by the process described in Specification 455.434.  The cast alloy may be rolled or otherwise mechanically worked, and after each working may be annealed at a temperature of 600 DEG C. to 880 DEG C. followed by air cooling.  It may be subjected to further heat treatment at lower temperatures followed by mechanical working.
Patent GB-948187-A (GB)
Title: Improvements in viscometers
Inventor: SCHNURMANN ROBERT
IPC: G01N11/06
Filed: 1961-04-07
Abstract: 948,187. Viscometers. ESSO RESEARCH & ENGINEERING CO. March 29,1962 [April 7, 1961], No.12545/61. Heading G1S. The viscosity of a liquid is measured by timing the descent of the meniscus of the liquid from a timing mark 4 on a reservoir 3 to the top of an outlet capillary tube 1. A constant temperature jacket 6 receives circulating vapour boiled off in flask 7 from a suitable pure liquid, a reflux condenser 11 returning the liquid, via a liquid trap 12, to the flask 7. The diameter of the capillary tube is preferably between 0.03 and 0.13 cms.
Patent GB-108750-A (GB)
Title: Improvements in Mangling, Wringing and Washing Machines.
Inventor: DICKINSON TOM
IPC: D06F61/02
Filed: 1916-09-05
Abstract: 108,750. Dickinson, T. Sept. 5, 1916. Calendering &c.-Drying and splitting of the rollers of machines for calendering or mangling fabrics is prevented by enclosing the rollers by a removable or hinged cover. The end frames may be fitted with plates or formed to serve as the ends of the cover: or the mangling-boards may be filted at the ends with battens. In a calendering- machine, a top cover B may be a part of the machine, the lower part B<1> being hinged or removable. The boards forming the cover may be lined with zinc or with a waterproof or absorbent material.
Patent GB-1150539-A (GB)
Title: Air Speed Indicating Apparatus
Inventor: BEILMAN JOHN LEON
IPC: G01P5/16
Filed: 1968-03-14
Abstract: 1,150,539. Measuring air speed electrically. CORNELL AERONAUTICAL LABORATORY Inc. March 14, 1968, No.12563/68. Heading G1N. Apparatus for measuring the air speed of an aircraft, particularly low speeds, comprises two L-shaped Pitot tubes 13, 15 Figs. 1, 2 mounted for rotation about a vertical axis by a motor 26, the ends 14<SP>1</SP>, 16<SP>1</SP> of the tubes being open in the direction of rotation, whereby the pressures fed through the tubes to chambers 22, 23 vary sinusoidally 180 degrees out of phase, the amplitude of the pressure difference is proportional to the velocity of the aircraft and is sensed by a diaphragm separating the chambers 22, 23, being converted into an electrical signal e.g. by strain gauge. The Pitot tubes 13, 15 each carry an airfoil 17, 18 inclined at a small angle to the horizontal, whereby a vertical movement of air is produced along the axis which effectively counteracts the centrifugal whirl produced by the rotating tubes. The electrical pressure difference signal is automatically corrected for variations in ambient temperatures and air density. The motor 16 may also drive a resolver fed with the pressure difference signal, whereby the direction of travel of the craft relative to its fore and aft axis is determined. A modified form of Pitot tube opening Fig. 5 (not shown) improves the accuracy at high forward speed and inhibits ice formation at the pressure openings.
Patent GB-419290-A (GB)
Title: Improvements in polarised electric relays
IPC: H01H51/22
Filed: 1933-05-01
Abstract: 419,290. Light current relays. SIEMENS & GENERAL ELECTRIC RAIL-. WAY SIGNAL CO., Ltd., and COOK, J. S., Caxton House, Westminster. May 1, 1933, No. 12650. [Class 38 (v).] A polarized relay has two movable polarized armatures arranged substantially to close two magnetic circuits, one of which circuits is that of an electromagnet over a gap between the poles of which the armatures extend and the other magnetic circuit being that of a polarizing magnet. As shown in Figs. 1 and 2, the operating coils 2 are mounted on parallel soft-iron cores secured to a yoke-piece 3 at one end and bearing pole-pieces 5, 6 at their other ends. Straddling these pole-pieces is secured a U-shaped permanent magnet 1 having polepieces 14 mounted in front of the pole-piece 5, but separated from the front surface thereof by a non-magnetic spacer 9. Between the projecting upper edge of the spacer 9 and an insulating cross-bar 15 the knife-edge lower ends of two armatures 16 are pivotally held, the upper ends of the armatures carrying insulating strips 17 with bridging contacts 18 secured by rivets 19. The armatures are normally held in the non-contacting position shown against adjustable back stops 13 by coil springs 11 or, alternatively, by suitably arranged blade springs. When the coils 2 are energized in one direction one armature is attracted to engage fixed contacts 21, the other being held against its stop by the spring tension assisted by magnetic repulsion, the reverse action taking place when the coils are energized in the opposite direction. The action of the relay may be adjusted by means of a slidingly adjustable magnetic shunt 22 bridging the poles of the permanent magnet, one end of this shunt being tapered as shown in Fig. 3.
Patent GB-131117-A (GB)
Title: Improvements relating to Secondary Electric Batteries or Accumulators.
IPC: H01M50/367
Filed: 1918-08-02
Abstract: 131,117. Tudor Accumulator Co., and Spencer, W. E. Aug. 2, 1918. Gas exits.-Two chambers a, a<1> are provided. one chamber a containing a capillary tube, b opening into the cell c, the other chamber a<1> being open to the atmosphere through a tube d. The two chambers communicate with each other through a capillary tube b<1> which may be coiled as shown. A wick leading into the cell may be provided in the tube b to act as a siphon to return any escaped electrolyte to the cell. In a modified form, only one chamber is employed, and only one capillary tube b. This is of sufficient capacity to prevent escape of electrolyte into the chamber. This may be obtained by enlarging the tube b at some point in its length or by making it of sufficient length.
Patent GB-560829-A (GB)
Title: Improvements relating to cycle frames
IPC: B62K13/00
Filed: 1942-09-08
Abstract: 560,829. Cycle frames. EVANS, L. O. Sept. 8, 1942, No. 12660. [Class 136 (iii)] A cycle frame convertible for use by either sex is basically a woman's cycle with either a curved or straight bracing tube or tubes 10. The top bar 1 is pivoted to a lug 3 extending from the top of the steering head 5, and its rear end is connectable by a detachable screw bolt to either a lug 7 on the top of the saddle tube 8 or to a lug 9 on the tube 10 or on the lower end of the tube 8. The screw bolt may have a knurled head and may be tapered at the inner end..
Patent GB-718738-A (GB)
Title: Improvements in circuits for electrical resistance heating of metal in continuous processing lines
IPC: C23C2/38
Filed: 1952-05-20
Abstract: 718,738. Annealing. UNITED STATES STEEL CORPORATION. May 20, 1952 [Feb. 19. 1952]. No. 12710/52. Class 72 [Also in Group XI] In heating continuous lengths of steel strip coated electrolytically with tin, the metal is passed over rollers at least three of which are conductive and are connected to the current source to pass current through the strip, the intermediate roller 12 being always of polarity opposite that of the outer two 10, 14. The final conductive roller 14 is immersed in a quenching bath 16, the heating being such that the tin coating melts just before entering this bath. The strip then passes through choke cores 26. A single phase current is supplied by two transformers 20, 21 connected with their primaries in like phase relation, and a conductor 22 connecting one end of the secoadary of each transformer is connected to the intermediate roller 12. In order to obtain good contact the strip passes over a considerable arc of each roller. The heating zones between rollers 10 and 12 and between rollers 12 and 14 may be unequal in length and the voltage output at the secondaries of the transformers is in the same ratio as these lengths so as to give even heating. The rollers 10, 15 may be grounded. When the heating zones are equal in length, choke cores are eliminated and the outer supply rollers are grounded.
Patent GB-1425118-A (GB)
Title: Vibration damper tools
IPC: E21B17/07
Filed: 1973-03-16
Abstract: 1425118 Boring earth &c OIL PATCH INDUSTRIES Ltd 16 March 1973 12875/73 Heading E1F [Also in Division F2] A drill-string vibration damper comprises a tubular barrel 52, 54, 56, a tubular mandrel 20, 34, slidably received in the barrel, a sealed spline assembly 44 coupling the barrel and mandrel together, and resilient compressible packing means 18 for damping longitudinal vibrations therebetween. The mandrel comprises two sections 20, 34 interconnected by means of a joint 28, but may alternatively be formed as an integral unit. The section 34 forms with an intermediate section 54 of the barrel an annular chamber for the receipt of bushes 16 separated by means of annular resilient members 18 having concave faces 92, (94), Fig. 3 (not shown). Sealing rings 60 and 78 are provided to prevent drilling mud from entering between the mandrel and barrel.
Patent GB-646876-A (GB)
Title: Improvements in or relating to stop-press or late news printing machines
IPC: B41F13/46
Filed: 1948-05-11
Abstract: 646,876. Printing-machines. ASSOCIATED NEWSPAPERS, Ltd., and HOGBEN, W. T. May 11, 1948, No. 12914. [Class 100 (ii)] Late news, means for printing; set-off, preventing.-In a late news printing-machine in which newspapers are fed between an inked fudge cylinder and a pressure roller, a wiper cylinder is rotatable in contact with the pressure roller to remove any inked impression deposited thereon, e.g. on temporary interruption of the newspaper supply. As shown, a metal wiper cylinder 3 with a hard felt &c. absorbent replaceable covering 8 contacts the rubber impression roller 2 and may be driven by such contact or by another part of the machine, e.g. through a belt 6 which may impose a different peripheral speed or direction from that of the roller 2 at the point of contact. Where the fudge cylinder 1 is axially adjustable, the cylinder 3 may either be made long enough to cover all settings of the fudge cylinder, or may be axially adjustable in coincidence therewith. The covering 8 may be impregnated with an ink-repellent such as petroleum lubricating oil, or a mixture of castor oil, olein and white spirit, a thin film of which is thereby transferred to the roller 2.
Patent GB-1507366-A (GB)
Title: Electron microscope
IPC: G01N23/225
Filed: 1975-03-27
Abstract: 1507366 Electron microscopes PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 27 March 1975 [1 April 1974] 12925/75 Heading H1D An electron microscope which may use a field emission source comprises an electron optical lens system, a dispersive energy analyser formed by a Wien filter 5, four-pole lens system 6 producing selective enlargement in the dispersion direction and a deflection device 7 (e.g. e.m. coil) for moving the image in the dispersion direction over slot 11 adjacent detector 12 (e.g. semi-conductive type). The deflection device can be means to adjustably unbalance filter 5, and device 7 may also deflect transverse to the dispension direction for centring. Additional electron optical aids may include weak four-pole lens 13, enabling the filter to be focused according to cross-over 8 position without affecting the energy selection setting, second order input divergence effects may be corrected by a sixpole lens 15 over the filter, while six-pole lens 16 may correct line curvature. Operation may be TEM, SEM, or STEM type and various settings are discussed with respect to Figs. 3 to 5 (not shown) which respectively are STEM setting (illumination system (21) including a wobbler), and imaging and diffraction settings for the TEM mode. Voltages and dimensions are specified including those of slit 11, diaphragm 3 opening and cross-over 8. Two operational modes of the analyser are described. Reference is included to a slit construction in a published document. Detector 40 enables additional measurements.
Patent GB-456876-A (GB)
Title: Process for the manufacture of sodium n-methyl-c, c-allyl-isopropyl-barbiturate in a stable, dry state readily soluble in water
IPC: C07D239/62
Filed: 1936-05-07
Abstract: Sodium N - methyl - C : C-allylisopropyl-barbiturate (see Specification 454,779), is put up into ampoules in a dry readily-soluble form by filling concentrated alcoholic solutions of the salt into ampoules, evaporating the solutions at ordinary temperature and under reduced pressure until a syrupy consistency is reached, and quickly heating to remove the remaining alcohol and inflate the solid residue.  The ampoules are then filled with dry air free from carbon dioxide and sealed.  An example is given. Swiss Specification 153,032 is referred to.ALSO:Sodium N - methyl - C : C - allylisopropylbarbiturate is put up into ampoules in a dry readily-soluble form by filling concentrated alcoholic solutions of the salt into ampoules, evaporating the solutions at ordinary temperature and under reduced pressure until a syrupy consistency is reached, and quickly heating to remove the remaining alcohol and inflate the solid residue.  The ampoules are then filled with dry air free from carbon dioxide and sealed.  An example is given.  Swiss Specification 153,032 is referred to.
Patent GB-110903-A (GB)
Title: A Variable-speed Device.
Inventor: BOBROVSKY SERGE
IPC: B60K17/10
Filed: 1917-09-12
Abstract: 110,903. Bobrovsky, S. Sept. 12, 1917. Variable-speed gearing.-A variable-speed device for motor-vehicles &c. comprises a shaft B formed at one end with a muff-coupling provided with a sinuous groove d engaged by pins c on the driving-shaft A, and at the other end with feathers f engaging grooves in the driven shaft E. The groove d imparts both a rotary and a reciprocating movement to the shaft B, and the axial movements are restrained more or less by a brake, consisting of a perforated disk D enclosed in a chamber C into which oil under high pressure is forced. The more the axial movements are restrained, the greater is the speed transmitted to the shaft E. A brake of different form may be used.
Patent GB-1337215-A (GB)
Title: Method of and apparatus for cutting sheets from a moving glass strip
IPC: B23D36/00
Filed: 1972-03-21
Abstract: 1337215 Cutting glass strip SAINT-GOBAIN 21 March 1972 [22 March 1971] 13165/72 Heading C1M In the transverse cutting of glass sheets from a moving glass strip in which a cutting bridge moves longitudinally of the strip, the bridge is accelerated from an initial stationary position to a speed substantially equal to the speed of the strip before being coupled to the strip. Glass strip 1 is transported on rollers 2, 3 driven from shafts 4, 4a through gears 25, 5 and a cutter wheel 15 is mounted on a carriage 16 for sliding movement along a cutting bridge 6. Bridge 6 is mounted for longitudinal movement of strip 1 by rollers 7 on rails 8 and driven by bracket 9 on driving chains 10 connected by wheels 11, chains 12 and wheels 32 to a shaft 31, which is in turn driven from a shaft 28 by gears 29, 30. A measuring wheel 22 mounted on bridge 6 runs continuously on the glass strip 1 and is connected via an impulse emitter 23 to a countting device 24 with a preselector device through which the drive for the bridge 6 is initiated a short distance, e.g. 6-10 cm, less than the required distance for the the start of the cut. The forward drive for the bridge 6 is through shaft 4, gear 25, shaft 26 and gear 27 to drive the shaft 28. Shaft 28 includes a clutch device 33 operated from counting device 24 and a free wheeling device 34, the bridge being accelerated up to 90-95% of the speed of the strip through clutch 33 and the device 34 being in operation when the bridge 6 is connected to and moves with the strip 1. Connection is effected for counting device 24 at the desired cut position by a plate 18 suspended from rods 20 actuated by jacks 19, the plate 18 having a flexible rubber surface with grooves so that the plate 18 will not adhere to the glass when the bridge 6 is uncoupled. Return movement of the bridge 6 is effected by an electric motor 36 through an electrically operated clutch 37 and stopped by a brake 35. In place of the mechanical connection between the shaft 4 and shaft 28, a separate electric motor may be used, with electrical connections to the motor during shaft 4.
Patent GB-541951-A (GB)
Title: Improvements in or relating to fixing bands for coverings of pipes and the like
IPC: F16L59/02
Filed: 1940-08-19
Abstract: 541,951. Band clips; hook fastenings. BELL'S ASBESTOS & ENGINEERING, Ltd., and ARMSTRONG, T. R. Aug. 19, 1940, No. 13187. [Class 44] [Also in Group XIIII A band clip device particularly for holding covering material 2 on a pipe 1 comprises a flexible band 3 of metal, webbing &c. having a spring 4 secured thereto at or near one end, the other end carrying a hook 7 adapted to engage in one or other of a series of eyelets 6 provided towards the other end of the band: When the band is of webbing, the hook may engage in the mesh of the webbing or in a metallic eyelet. Preferably the band is of steel with funnel-shaped eyelets stamped out. The bands may be corrugated or serrated, and have distinctive colours identified with the contents of the pipe. A tool resembling a button hook may be used to pull the hook into engagement.