baber/WOPTO huggingface dataset:
Patent GB-795889-A (GB)
Title: Preparation of peracetic acid
IPC: B01J31/08
Filed: 1955-08-03
Abstract: Peracetic acid is obtained by the reaction of hydrogen peroxide with acetic acid in the presence as the peracetic acid formation catalyst of at least 1 per cent by weight of the acid form of a cation exchange resin based on the total weight of the reactants, said resin being resistant to oxidation and substantially insoluble in the reaction medium.  In carrying out the process the required amount of cation exchange resin in its acid form is first added to the acetic acid and the necessary amount of hydrogen peroxide is then added. The reaction mixture is then preferably stirred while being maintained at about room temperature and when the desired peracetic acid concentration is reached the peracetic acid solution is filtered off from the ion-exchange resin, which resin after washing and regenerating with strong acid may be used again in the process. Specified types of ion exchange resins are phenolic methylene sulphonic types and nuclear sulphonic types and examples are given in which these types of cation exchange resin are used, the amount of resin present ranging from 1 per cent to 50 per cent by weight of the reactants.
Patent GB-1133828-A (GB)
Title: Improvements in lightning arrester monitors
IPC: G01R27/18
Filed: 1967-05-15
Abstract: 1,133,828. Counting lightning flashes. GENERAL ELECTRIC CO. 15 May, 1967 [13 July, 1966], No. 22395/67. Heading G4D. [Also in Division G1] In an arrangement for counting the discharges and measuring the grading and leakage currents of a lightning arrestor, the meter for measuring these small currents is protected from the effect of discharge currents. A voltage dependent non-linear resistor 1 and capacitor 7 are connected in series with the arrestor and its spark gap. In shunt with the non-linear resistor is coupled a meter 3 via a high resistor 5 and full wave rectifier 4. The non-linear resistor produces a logarithmic response in the meter such that the system is more sensitive to small currents than large ones. A counter actuating coil is in parallel with the capacitor 7 for counting discharges and a second voltage dependent resistor 8 in series with a spark gap 9 is in shunt with the first. Leakage current is a measure of external contamination of the arrestor, while grading current is a measure of the integrity of the voltage grading network which controls the sparkover voltage.
Patent GB-242040-A (GB)
Title: Improvements in building blocks, bricks and the like
IPC: E04B2/14
Filed: 1924-09-23
Abstract: 242,040. Hultin, V. K. Sept. 23, 1924. Building blocks, special shapes of. - The interlocking projections 4, 5 and recesses 1, 2 of building blocks are so arranged as to ensure by their engagement the automatic provision of clearances of such small magnitude as 2 mm. between the end faces of adjacent blocks. The projections are less deep than the grooves so as to provide spaces for binding liquid which is poured into grooves 3 in the end faces. The projections and grooves are arranged longitudinally and transversely of the surfaces. The blocks may be provided with vertical hollows 6 which are covered at the top by loose slabs 7, Fig. 5, the edges of the latter forming the boundary walls of the grooves in the upper face. Obstacles may be formed in the grooves at certain places in order to restrict the flow of grouting. Specification 194,627 is referred to.
Patent GB-461010-A (GB)
Title: Improvements in and relating to propulsive systems for aircraft
IPC: B64D27/00
Filed: 1935-08-08
Abstract: 461,010. Propelling aircraft. BAYNES, L. E. Aug. 8, 1935, No. 22448. [Class 4] A propelling system particularly for light aircraft comprises at least two lateral airscrews carried by a hollow stub wing which projects fixedly on opposite sides of the fuselage, and is adapted to carry extensions with which to form a supporting wing proper, each airscrew being driven by a power plant mounted at or adjacent the centre of the wing span through power transmission means situated in the stub wing. As applied to a high wing cantilever monoplane, wing 1 is detachable at joints 2 (in halves) from the top of the fuselage. A fixed stub wing 4 extends laterally on either side of the body and forwardly to main spar 5 of the wing proper. Stub wing 4 accommodates two airscrew shafts 6 journalled in bearings carried by spars 7, 8, each shaft carrying a pusher airscrew 9. The central part of stub-wing 4 houses in the manner described in Specification 460,975, an engine 10 which drives shafts 6 through transmission means 12 which may comprise belt or chain gear, or shaft and bevel gearing, the arrangement being in each case such that a reduction in rate of revolution is effected between the engine and airscrew shafts.
Patent GB-585642-A (GB)
Title: Securing articles delivered at house doors or other fixed positions
IPC: A47G29/26
Filed: 1944-11-15
Abstract: 585,642. Brackets. YOUNIE, J. Nov. 15, 1944, No. 22525. [Class 52 (v)] [Also in Group XXV] A two-part fastening comprises a holder 7, attached to an article 8 to be retained, the holder having spring teeth or pawls which slide over ratchet teeth '4 in a mounting 1 attached to a door 2, or the like. The holder is entered into one end of the mounting and can only be removed by passing the holder out of the other end when a barrier such as a plate 11 is removed when the door is opened. The removal end of the mounting may be blocked by a door-step and the holder may have a chain attached to secure a bicycle, perambulator or the like, until the door is opened clear of the step. Fig. 11 shows a box 15, with a lid 16, each having channel members 17 containing pawls which co-act with ratchet teeth in a slider 1. Fig. 12 shows a band clip 23 which may be expanded or contracted by relative motion of pawls 10 along the ratchet teeth. The slider 1 may be made of metal or plastic material.
Patent GB-1157248-A (GB)
Title: Vehicle Stacking Apparatus
Inventor: LIPKAU MAXIMILLIANO ALVAREZ
IPC: B66F7/02
Filed: 1968-05-13
Abstract: 1,157,248. Stacking vehicles; garage-lifts. M. A. LIPKAU. 13 May, 1968 [11 May, 1967], No. 22536/68. Headings B8E and B8H. In apparatus for stacking vehicles in garages and car parks, platforms 6 for the vehicles are supported by a series of nuts 5, 9 which are non- rotatably mounted upon screwthreaded spindles 3, 8 supported by post members 1, I<SP>1</SP>. Vertical displacement of a selected platform is effected by rotation of the spindles associated with it. Adjacent ends of a motor-driven overhead shaft 12 are engaged by a coupling 19 having axial movement controlled by a handle (25), Figs. 3, 7 (not shown). Teeth 19<SP>1</SP> on the coupling may engage teeth 15<SP>1</SP> formed on tubes 15 to which bevel gears 14, 16 are secured, these gears being in constant mesh with gears 13, 18 secured to the spindles 3, 8 shown in the centre of Fig. 2. The tubes 15 also carry gears 14<SP>1</SP>, 16<SP>1</SP> which engage gears 13<SP>1</SP>, 18<SP>1</SP> on the other spindles 3, 8. To minimize damage or wear between the nuts and spindles, guides 4 of the platforms are fixed to nut portions 5<SP>1</SP> which are mounted on the bodies of the nuts 5 with some play, Fig. 4. Limit switches 23, 24 control the motor 21, switch 24 being positioned such that, when the platform reaches the floor the nut 5 disengages from the portion 5<SP>1</SP> before operating the switch 24. This arrangement permits the motor to restart off load and the coupling control to be more easily operated. In Fig. 8 the coupling 19 is shown in its non- engaged centre position. By moving the coupling to either of its engaged positions one or other of the platforms can be raised or lowered. In the event of breakdown of the motor drive, the platforms may be lowered manually by means 20, 22. The spindles have unthreaded end portions 3<SP>1</SP>, 8<SP>1</SP> so that if the limit switches 23, 24 fail and the spindles continue to be driven the nuts disengage themselves from the threaded portions. The drive shaft (12) may be below ground level, Fig. 1 (not shown) or at some intermediate height. More than one motor may be used.
Patent GB-1457893-A (GB)
Title: Radio frequency heaters for thermoluminescent dosimetry discs
IPC: G01T1/115
Filed: 1973-05-11
Abstract: 1457893 Controlled heater for thermoluminescent dosimetry discs BRITISH NUCLEAR FUELS Ltd 23 April 1974 [11 April 1973] 22549/73 Heading G1A Apparatus for measuring the output of thermoluminescent dosimetry discs comprises a radio frequency heater adapted to receive said discs, equipment 14 for counting light emission from them and a digital timer 13 controlling both the heating and counting times. The discs are received in lighttight drawer 10 having a light guide to photomultiplier 11. Heating coils 12 are powered from push-pull class B amplifiers 15, having a stabilized power supply with overload protection, driven from oscillator and control box 16. These amplifiers have driver stages. Negative feedback is provided via lead 17 and the amplifier output adjusted by a potentiometer in the feedback circuit. Digital timer 13 takes a 50 Hz signal which is rectified and clipped giving 1 pulse per 10 mS subsequently shaped by Schmitt trigger integrated circuits. Further divide-by-10 integrated circuits give pulses every 100 mS, IS and 10S. The switching off times are set by 10 position digital switches. A panel has controls for heating time, power, on time for cell 11, off time for cell 11, coarse and fine controls tuning from 500 KHz to 1MHz, start and stop buttons and a tuning meter. A logic circuit provides the control. With the stop button pressed, the start button is an on/off control. Counts from terminal 18 and disc identification information are provided to a tape recorder. The method of use is described.
Patent GB-625641-A (GB)
Title: Improvements in and relating to pottery making machines
IPC: B28B1/02
Filed: 1947-08-14
Abstract: 625,641. Pottery manufacture. EDWARDS & JONES, Ltd., JONES, A., JONES, W. H., and JONES, S. Aug. 14, 1947, Nos. 22560/47 and 13371/48. [Class 87 (i)  In a pottery making machine a shaping arm 16 is rocked about a pivot 17 to co-operate with a rotary head 13 by an eccentric 27 coupled to the arm by links 29, 32 having a yielding spring connection 30 which allows of an arc of lost motion in the eccentric while the shaping tool engages the work. Movement of the arm 16 towards the work is limited by an adjustable screw stop 35. An edge scraper tool carried by an arm 50 pivoted at 47 to the arm 16 is controlled by a cam 40 secured to the pivot pin 33 of the link 32. The head 13 may be automatically stopped between successive operations of the arm 16. According to the first Provisional Specification, the cam 40 is operated by a further link attached to the link 29 or the housing 30.
Patent GB-1422144-A (GB)
Title: Roof elements
IPC: F27D1/02
Filed: 1972-05-13
Abstract: 1422144 Suspended furnace roofs WFJ CONSTRUCTION CO (NORTH WALES) Ltd 13 Aug 1973 [13 May 1972] 22571/72 Heading F4B A suspended furnace roof structure comprises sets of blocks in each of which a refractory hanger 3 supports further blocks 6 and 9, the arrangement being such that adjacent further blocks 6 and 9 have interengaging tongue and groove surfaces engagement of which is facilitated by the shoulders with downwardly sloping upper surfaces on the hangers 3 engaging corresponding recesses in the blocks 6 and 9 as shown. The hangers 3 are suspended from girders 18 by C-shaped yokes the ends of which engage recesses in opposite faces of said hangers as shown. The shoulders in the hangers 3 may be foreshortened to eliminate the bottom corner recesses (Figs. 4-7) these being then supplied by additional shallow tiles (Fig. 7). In a modification (Fig. 12) the C-shaped yokes have straight backs engaging horizontal slots in the heads of the hangers the ends being bifurcated (17) and engaging the flange of a suspension girder.
Patent GB-189228-A (GB)
Title: Improvements in or relating to universal joints and their application to combined steering and driving wheels
IPC: B60K17/30
Filed: 1921-08-25
Abstract: 189,228. Barker, G. Aug. 25, 1921. Universal joints. - A double universal joint applicable to combined driving and steering wheels of motor vehicles comprises a driving member A and a driven member E respectively pivoted to gimbal-like rings C, D about pivots passing through the axes of the driving and driven members when the latter are in alignment, the rings C, D being also pivoted together about an axis at right angles to the pivots of the driving and driven members.
Patent GB-488242-A (GB)
Title: Improvements in or relating to devices for counter-sinking, boring, drilling and similar operations, provided with a depth stop
IPC: B23B51/10
Filed: 1937-08-18
Abstract: 488,242. Depth gauges for drills &c. ROTERBERG, W. Aug. 18,1937, No. 22698. [Class 83 (iii)] A depth gauge for attachment to a drill, countersink, &c. is rotatable and axially adjustable relatively to the tool and is adapted to be either axially fixed relatively to the tool or slidable thereon. A housing d is axially adjustable on screw-threads on the shank a of the tool b and is locked in position by a nut m engaging wedges &c. k of soft material. A ring f is rotatably supported in the housing d by means of a ball thrust bearing e and a spring ring g and slidably receives a stop sleeve c for engagement with the work. The sleeve may be axially locked to the ring f, as shown, by means of a key i having a step i<1> engaging an annular recess f<1> in the ring and an axial slot c<3> in the sleeve, the compression of a spring h serving to prevent disengagement of the parts. A slot f<2> in the ring allows the key to be removed, in which case the spring h forces the sleeve against a shoulder b<2> on the tool. The sleeve then makes initial contact with the work and stops the feed when it engages the ring f, a large slot c<1> being provided for observation of the tool and smaller slots c<2> for clearing cuttings. The sleeve c may be made of several parts screwed together for adjustment of its length, and the tool b is screwed at b in the shank a.
Patent GB-501023-A (GB)
Title: Improvements in rotating mechanism for lathe and like turrets
IPC: B23Q16/02
Filed: 1937-08-19
Abstract: 501,023. Lathes. HEBBERT, Ltd., A., LLOYD, A. H., and SMITH, C. M. P. Aug. 19, 1937, No. 22716. [Class 83 (iii)] In rotating mechanism for lathe &c. turrets a turning finger 11 is arranged so that the operative end can yield slightly under the turning load when this exceeds a predetermined value. A slot 12 in the finger is engaged by a stationary pin 13. The end of the finger adjacent the pin has a flattened portion 14 which is engaged by a spring pressed stud 15, the finger being thus arranged to yield slightly, in the direction of its length, under a predetermined load.
Patent GB-354996-A (GB)
Title: An improved hat holder
IPC: A47G25/10
Filed: 1930-07-28
Abstract: 354,996. Hat holders. LONGSTAFF, D. R., 8, Spencer Street, North Shields. July 28, 1930, No. 22733. [Class 52 (v).] A hat holder for attachment to the underside of a seat consists of a pair of curved members 1, arranged in a plane parallel with the seat and spaced apart at both ends, the ends of the members being bent outwards, 1a, to accommodate the hat-brim, and then upwards, 1c, to space the member 1 from the seat, the extremities being formed for attachment to the seat. The extremities may be formed as screw eyes or bent to lie in L-shaped grooves in attaching plates 4, which are afterwards screwed to the chair. The holder may be formed in one piece by joining either or both ends as shown in dotted lines.
Patent GB-644805-A (GB)
Title: Improvements in apparatus for counting and delivering buttons
IPC: B65B57/20
Filed: 1947-08-15
Abstract: 644,805. Counting-apparatus. KING, C. E. Aug. 15, 1947, No. 22743. [Class 106 (i)] Apparatus for counting and delivering buttons comprises a hopper or container 23 for the buttons, a rotatable plate 10 located at the base of the container and having a known number of apertures 22 therein, each of a depth to accommodate two buttons superimposed, a fixed plate 21 located beneath the rotatable plate and adapted to support buttons positioning themselves within the apertures, the rotatable and fixed plates extending in part to a position exteriorly of the container 23 and the fixed plate having an aperture 25 therein through which the buttons may pass as the rotating plate passes over it, and brush means .29 positioned within the container so as to sweep the rotatable plate immediately before it emerges from the container. The edges of the apertures in the rotatable plate 10 may be rounded to facilitate the entry of the buttons. The buttons may be delivered into a shoot having two legs under the control of a deflecting plate.
Patent GB-1516463-A (GB)
Title: Cerium-activated yttriumaluminate phosphor of improved efficiency
IPC: C09K11/08
Filed: 1976-06-02
Abstract: 1516463 Luminescent materials and uses thereof MATSUSHITA ELECTRIC INDUSTRIAL CO 2 June 1976 [2 June 1975] 22750/76 Heading C4S A Ce activated yttrium aluminate phosphor is prepared by adding a barium compound to a mix of the source materials, which include a cerium compound such as to produce 0À1 to 5 mol per cent Ce in the phosphor, and baking the mix at a temperature in the range 1000 to 1400C, the product being nitric acid washed when more than 8 mol per cent of Ba compound is present. Before addition of the Ba compound, the source materials may be baked at a temperature below 1150C and then pulverized. Ba compounds are exemplified and are preferably in amount 0À001 to 8 mol per cent of the source materials, but the concentration may be up to 20 mol per cent. The host may be YAlO 3 , Y 3 Al 5 O 12  and Y 4 Al 2 O 9 . The phosphors retain their intensities when further pulverized and baked. Detailed examples are included, and variations of luminous intensity with Ba compound concentration, and rate of change of intensity with baking temperature are discussed w.r.t. Figs. 1 and 2 (not shown). The phosphors exhibit short decay time and may be used in flying spot scanner tubes and index type colour image receiving tubes.
Patent GB-1314798-A (GB)
Title: Light deflection system
IPC: G02F1/33
Filed: 1971-04-19
Abstract: 1314798 Lasers INTERNATIONAL BUSINESS MACHINES CORP 19 April 1971 [4 March 1970] 22788/71 Heading H1C [Also in Division H4] A light deflector comprises a piezo-electric crystal which is provided on one surface with an interdigitated metallic comb transducer for causing surface acoustic waves of variable frequency to propagate along the surfaec in a particular direction and to produce deformations therein and is provided with electrodes on the one surface and an opposed surface for producing a variable and non-uniform field within the crystal whereby the propagation direction of the surface wave is altered (since the stiffness of the crystal is a fraction of the field strength and polarity), so that light incident on the one surface is diffracted by the surface deformations through an angle depending on the acoustic frequency and in a plane determined by the acoustic propagation direction. As described, the non-uniform electric field is obtained by providing substantially identical electrodes on inclined opposed faces or by providing electrodes of disparate size on parallel crystal faces. The electrodes may be of tin oxide, or of Al, Cu, to provide a transmissive or reflective phase grating respectively. The crystal may be LiNbO 3 , ZnO, CdS, or bismuth germanium oxide. The deflector may be disposed with a laser cavity.
Patent GB-1005223-A (GB)
Title: Strip structures and methods of making the same
IPC: B60J10/04
Filed: 1962-06-14
Abstract: 1,005,223. Edging strips. BACKSTAY WELT CO. Inc. June 14, 1962 [Dec. 22, 1961], No. 22873/62. Heading E1J. An edging strip for straddling over an edge flange &c. is made by enclosing in a flexible covering of e.g. plasticized vinyl chloride 8, ornamented if desired, a one piece sheet steel core strip 4 having a series of transversely extending core elements 6 connected intermediate their ends by frangible parts 7 and then forming the whole into a channel-shaped form. The parts 7 may be broken before, during or after the channel-shape formation. The parts 7 may be formed by transverse grooves 16 and apertures 17 enable the cover on one side of the metal strip to be bonded to the cover on the other side. The core covering is formed integrally with clamping ribs 1, 2.
Patent GB-1358258-A (GB)
Title: Shock mounts
IPC: F16F9/02
Filed: 1970-05-12
Abstract: 1358258 Piston-cylinder fluid mounts S G BROWN Ltd and J ADAMS 11 May 1971 [12 May 1970] 22947/70 Heading F2S [Also in Division G1] An object (e.g. a gyro reference platform) is mounted on a support by a piston-cylinder fluid unit, the fluid pressure in the cylinder 11 urging the piston 18 against an end wall 14 of the cylinder so as to maintain the object and the support in a normal relative position under a first force, and the piston being a loose fit in the cylinder so that the fluid pressure acts on both sides of the piston when it is displaced from the end wall under a shock displacement of the object and support from the normal relative position, the areas of the piston and the piston-rod being such that the object and the support are restored to the normal relative position after such a shock displacement under a lesser force than the first force. There is required to be a passage 21, 22, 24 providing restricted communication of atmosphere to between the end wall and the piston when the piston is against the end wall. The return movement to the normal position is damped by a pneumatic dashpot constituted by a cover 29 and a seal 34. The unit shown functions for compression shocks only. The embodiments of Figs. 2 and 3 (not shown) return the unit to the normal position after both compression and tensile shocks. The unit of Fig. 2 may also be used horizontally instead of vertically, with a spring replacing gravity to aid return of the unit after tensile shocks. Three units (251, Fig. 4, not shown) may support the platform (250), the units being fluidically interconnected via their passages 26, 28 so that they collapse simultaneously under shock.
Patent GB-1273431-A (GB)
Title: A fluid energy transmission system
IPC: F15B13/04
Filed: 1969-05-06
Abstract: 1,273,431. Hydrostatic transmission control. CESSNA AIRCRAFT CO. 6 May, 1969 [16 May, 1968], No. 22970/69. Heading F2D. [Also in Division F1] In a hydrostatic transmission comprising a pump 12 and a motor M, the motor speed is maintained constant by controlling the pump displacement in response to the flow rate as measured by Venturi 19 whose tappings 20, 21 lead to servo-piston 25. Valve 30 in its rightward position vents the left side of piston 25 to cause minimum pump displacement when the system is idle. The Venturi may be replaced by restricted orifices which can be incorporated in the lands of a reversing spool valve allowing control of speed and direction of the motor. The pump displacement in such case can be reduced to a minimum, when the spool is centralized, by admitting motor upstream pressure to one side of the servo piston or by venting the other side.
Patent GB-830642-A (GB)
Title: Improvements in getter devices for vacuum tubes
IPC: H01J7/18
Filed: 1958-07-17
Abstract: 830,642. Discharge apparatus. MACHLETT LABORATORIES Inc. July 17, 1958 [July 31, 1957], No. 22976/58. Class 39(1). A getter comprises an element which operates as a flash getter when heated to a known temperature range by a resistance heater, which itself is formed of a material acting as a continuous getter within a second known temperature range. The flash getter may be any usual material such as a barium compound, in the form of an arcuate rod 17. This is overwound spirally with the heater wire 23, of zirconium, titanium, or other continuous gettering material, across which a voltage is applied. Two separate heater wires, one of zirconium and one of titanium, may be used, since these getter at different temperature ranges.