baber/WOPTO huggingface dataset:
Patent GB-1308923-A (GB)
Title: Acetylene compounds
IPC: C07C67/00
Filed: 1970-11-12
Abstract: 1308923 Acetylene compounds F HOFFMANN-LA ROCHE AG 12 Nov 1970 [14 Nov 1969] 53906/70 Heading C2C [Also in Division A5] Novel compounds of the general Formula Ia wherein one of the symbols R<SP>1</SP> 1  and R<SP>1</SP> 2  represents a hydrogen or halogen atom or a propynyloxy group and the other symbol represents a halogen atom or a propynyloxy group or the symbols R<SP>1</SP> 1  and R<SP>1</SP> 2  together represent a C 1-6  alkylenedioxy group and also the compound Ia wherein R<SP>1</SP> 1  is hydrogen and R<SP>1</SP> 2  is methyl may be prepared by oxidizing an acetylenic carbinol II or reacting an acid halide III wherein hal is a halogen atom, with a metal acetylide. The acetylenic carbinols II may be prepared by reacting the corresponding aldehyde IV with sodium acetylide.
Patent GB-1320769-A (GB)
Title: Apparatus for carrying out chemical reaction
IPC: B01J19/00
Filed: 1970-11-13
Abstract: 1320769 Removing gaseous product from liquid phase reactions CHEMISCHE WERKE HULS AG 13 Nov 1970 [15 Nov 1969] 54101/ 70 Headings B1M and B1X In an apparatus in which gaseous product or byproduct can be removed from the liquid phase immediately it is formed to prevent unwanted side reactions, liquid reaction mixture from inlet 13 flows round spiral flow channel 8, which channel is open at the top to allow quick release of gas from the liquid. Heat exchange medium can be passed round spiral conduit 7 which forms part of the wall of channel 8 to heat or cool the reaction mixture, and an entrainment gas from inlet 15 can be heated by coils 21 before passing through orifices 20 into the reaction liquid. The use of the apparatus in the trans esterification of terephthalic acid dimethyl ester with ethylene glycol is described.
Patent GB-547250-A (GB)
Abstract: 547,250. Ether-alcohols. IMPERIAL CHEMICAL INDUSTRIES, Ltd. (Du Pont de Nemours & Co., E.I.). Feb. 17, 1941, No. 2111. [Class 2 (iii)] Ether alcohols are produced by reacting a cyclic formal of a glycol of the formula with an alcohol, which may be aliphatic, cyclic, or aromatic saturated or unsaturated and mono- or polyhydric, or an ether of a polyhydric alcohol which contains at least one hydroxy group. In the above formula R means hydrogen or similar or dissimilar hydrocarbon groups. The reaction is effected in the presence of an acid catalyst. In examples (1) an ethylene glycol formal methanol azeotrope is refluxed with sulphuric acid, yielding (methoxy-methoxy) ethanol; (2) ethylene glycol formal is heated with ethylene glycol and sulphuric acid, yielding di - # - hydroxyethyl - formal. Specifications 522,494 and 543,030 as open to inspection under Sect. 91 are referred to.
Patent GB-1461365-A (GB)
Title: Polymeric alkoxides based on hydroxyalkyl methacrylates and a method for their preparation
IPC: C08F8/00
Filed: 1974-12-19
Abstract: 1461365 Polymers containing alkali metal alkoxide groups CESKOSLOVENSKA AKADEMIE VED 19 Dec 1974 [28 Dec 1973] 54885/74 Heading C3P Polymers containing units of formula in which X is a C 2-20  bivalent organic group and M is Li, Na or K, are prepared by reacting a hydroxyalkyl methacrylate homo-polymer or a copolymer thereof with an alkylene dimethacrylate with an organometallic Li, Na or K compound at a temperature in the range- 70‹ to + 50‹ C. in an aprotic solvent. In examples, 2-hydroxyethyl methacrylate/ethylene glycol dimethacrylate copolymers are reacted in tetrahydrofuran with n-butyl lithium, or triphenylmethyl lithium, sodium or potassium.
Patent GB-1199759-A (GB)
Title: Variable Speed Motor Control Arrangement
IPC: H02P27/02
Filed: 1967-12-04
Abstract: 1,199,759. Control of A.C. motors. ARROW ELECTRIC SWITCHES Ltd. 4 Dec., 1967 [24 Feb., 1967], No. 55034/67. Heading H2J. The speed of a motor is continuously varied between upper and lower values by alternately connecting it to an accelerating power source by controlled switching means (thyristors) and to a decelerating unidirectional voltage by additional controlled switching means (thyristors). The motor is a three phase induction machine and may be used for traversing a yarn when winding a spool. For acceleration, back to back pairs of thyristors in two supply phases are triggered from a transformer whose primary is switched on by a triac triggered with relatively high frequency pulses from a unijunction transistor relaxation oscillator. For deceleration, an unsmoothed, full wave rectified voltage is applied to two motor terminals via a further thyristor controlled by similar circuitry to that of the accelerating thyristors. The relaxation oscillators are switched alternately by a pair of thyristors in a bi-stable arrangement; this is initially in the accelerating mode, and is switched to cause deceleration when a tachogenerator voltage reaches a predetermined level. It remains in the decelerating made for a time determined by an R-C timing circuit. The power supplied to the motor during acceleration is controlled by the firing angle of further thyristors, one for each phase, arranged back to back with normal diodes and triggered by a magnetic amplifier circuit. Adjustment of the firing angle regulates the rate of acceleration, potentiometers in the tachogenerator circuit determine the maximum speed reached and adjustment of the R-C timing circuit determines the minimum speed. The rate of deceleration is controlled by an adjustable autotransformer in the braking supply circuit.
Patent GB-1372405-A (GB)
Title: Bearings
IPC: F16C13/00
Filed: 1971-11-29
Abstract: 1372405 Vibration damping; toothed gearing; shaft couplings CONSTRUCTIONS MECANIQUES PIERRE HANSSEN & CIE SA 29 Nov 1971 [7 May 1971] 55264/71 Headings F2Q F2S and F2U A shaft and gear assembly comprises a pair of coaxial sleeves 5, 9, mounted on the shaft and having tapered engaging surfaces, a vibration absorbing resilient sleeve 20 between the sleeves and the inside of a wormwheel 23, and a worm 37 engaging the wormwheel. Rotation of the worm adjusts the angular position of the shaft and thereby the engagement of a curved roller thereon with a web such as in the unfolding of films or fibrous cellulose, metallic and plastics strips. A hand-lever locks the worm after adjustment. The wedges are engaged by a nut 11 retained by a locking washer 16.
Patent GB-1499997-A (GB)
Title: Motor control circuit for a camera
IPC: G03B17/00
Filed: 1974-12-28
Abstract: 1499997 Control of D.C. motors KONISHIROKU PHOTO INDUSTRY CO Ltd 28 Dec 1974 [28 Dec 1973] 55293/74 Heading H2J [Also in Division G2] A camera control circuit comprises a D.C. motor M to drive the shutter and film wind mechanism, a switch GS controlled by the motor to open when it exceeds a predetermined speed and thereby connect a resistor R6 in series with the motor, and a relay RL1 having contacts RL1 -1 in parallel with members G5, R6, which contacts are closed to cause the motor to operate at a maximum speed to drive the shutter, when the shutter release switch SW5 is closed, and are normally open when the switch SW5 is open to allow the members GS, R6 to drive the motor at a reduced speed to wind the film. The arrangement is such that, when switches SW3, SW4 are on their single photograph contact positions S1 S2, the shutter is driven at maximum speed and the film wound at reduced speed, and when on their successive photograph contact positions C1, C2, the motor is driven at maximum speed throughout the period of successive photography. During this period the switch SW5 is continuously closed to close contacts RL1-1 and the remainder of the circuit operates in a manner similar to that described in Specification 1,498,188. For a single photograph the following sequence of operations occurs: (1) Closure of switch SW5 energizes relay coil RL1 and relay coil RL2 through switches SW2, SW3, SW10. Resultant closure of contacts RL1-1 and changeover of contact RL2-1 to contact b causes the motor to drive the shutter at maximum speed. (2) Switch SW10 is opened by a diaphragm mechanism to de-energize relay RL2 and changeover contact RL2-1 to contact a to de-energize and brake the motor. (3) When exposure is completed, switch SW10 closes and switch SW2 changes to contact B. (4) Since switch SW3 has been allowed to open, contacts RL1-1 are opened and contacts RL1-2 are closed, the latter action making transistor TR2 conductive to energize relay RL2 through SW2, SW10 and TR2. Hence the contact RL2-1 changes to b and the motor winds the film one frame at a speed controlled by members G5, R6. (5) Switch SW2 changes over to contact A to de-energize relay RL2 and de-energize and brake the motor in preparation for a repeat of operations (1) to (4) above.
Patent GB-1068047-A (GB)
Title: Improvements in and relating to apparatus for feeding and driving articles into work
Inventor: MACDONALD MURDO ALEXANDER
IPC: B25B23/04
Filed: 1963-10-04
Abstract: 1,068,047. Screw-driving. CLYDE CORPORATION. Oct. 4, 1963, No. 55411/66. Divided out of 1,068,046. Heading B3N. The subject matter is identical with the parent Specification, but the claims are directed to apparatus for feeding articles one at a time, which comprises an article transfer apparatus, an article conveying means, and control means.
Patent GB-1191665-A (GB)
Title: Improvements relating to Gutters for Rainwater
Inventor: HOMA RAMSAY
IPC: E04D13/076
Filed: 1966-12-12
Abstract: 1,191,665. Gutter guards. BOURNEHAM Ltd. 24 July, 1967 [12 Dec, 1966], No. 55585/  66. Heading E1B. A gutter guard comprises a P.V.C. mesh tube 38 held in the gutter by spring clips 48 made of plastics or by the edge of the roof tiles. In a second embodient the P.V.C. tube is shaped to fit a flat bottomed gutter and the clips have one arcuate limb and one limb with a flange engaging the inner wall of the gutter.
Patent GB-1271558-A (GB)
Title: Process and apparatus for use in the work-up of waste water containing phosphorus sludge
Inventor: MULLER FRITZ
IPC: C02F11/13
Filed: 1969-11-13
Abstract: 1,271,558. Phosphorus recovery. KNAPSACK A.G. 13 Nov., 1969 [13 Nov., 1968], No. 55622/69. Heading C1A. Phosphorus is recovered from waste water having phosphorus sludge therein, by filtering the water, and predrying the filter cake, then conveying the filter cake through at least one additional drying zone and an evaporation zone for P maintained at temperatures between about 100 and 380 C., then passing the vapour into a condensation zone, where the water and phosphorus are condensed and removed separately. The predrying may take place in the filtration zone. The process may be effected in an inert atmosphere, such as nitrogen. The waste water may be neutralized by calcium hydroxide prior to filtration. Apparatus for carrying out the process comprises a centrifugal filter, an agitated reservoir, two paddle blade screw driers and an injection condensor.
Patent GB-1529568-A (GB)
Title: Disc brakes
IPC: F16D65/46
Filed: 1974-12-27
Abstract: 1529568 Disc brakes GIRLING Ltd 2 Dec 1975 [27 Dec 1974] 55913/74 Heading F2E A self servo disc brake of the kind in which lugs 8, 9 on pressure plates 4, 5 are rotated in opposite directions to apply the brake, is applied by a spring and released by fluid pressure. As shown a stepped piston 14 is arranged to reciprocate an angularly movable rod 24 held in a recess 25 in the pistons by a spring 31. The rod carries rollers 26, 27 wedging between conventional tappets 19, 20. Admission of fluid to space 15 retracts the piston against the action of spring 32 which applies the brake when fluid pressure is relieved. The rod may be pivoted to the piston, and the rollers may be journalled on tappets secured to the lugs (Fig. 3, not shown).
Patent GB-1103687-A (GB)
Title: Grand piano
IPC: G10C3/04
Filed: 1966-12-15
Abstract: 1,103,687. Pianofortes. NIPPON GAKKI SEIZO KABUSHIKI KAISHA. 15 Dec., 1966 [20 Dec., 1965; 8 Feb., 1966; 15 Feb., 1966], No. 56109/66. Heading G5J. A grand piano is constructed with specially arranged braces: a cross block 2 connects the ends of inner rim 1, and braces 3, 4, 5, 6, 8 are located as shown with a cross beam 9 connected to the mid-points of the braces to provide optimum acoustical coupling. Brace 8 and beam 9 are made of harder wood (birch, hickory or maple) than the other braces (which may be of beech) in order to sustain the treble vibrations. A metal frame (12) (Fig. 3, not shown) which does not touch the sound board (11) is bolted to rim 1 and may also be bolted to the cross block 2 or any of the braces e.g. brace 8 which would have a bolt receiving member (15) (Fig. 4, not shown), (19) (Fig. 5, not shown) bolted to it.
Patent GB-1237090-A (GB)
Title: Method of joining a light-metal or a light-metal alloy to a non-metallic material
IPC: H01J5/26
Filed: 1968-11-29
Abstract: 1,237,090. Welding by fusion; soldering. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 29 Nov., 1968 [4 Dec., 1967], No. 56787/68. Heading B3R. In a method of joining a light metal or light metal alloy to a non-metal, the joint is effected by soldering the non-metal to a member of a metal of higher melting point than that of the light metal or light metal alloy, and then bonding the light metal or light metal alloy to the member of said metal by arc welding in a protective atmosphere. In the embodiment shown, an insulating rod 1 of Al 2 O 3  has soldered thereto using a silver or eutectic silver-copper alloy an intermediary 3 of titanium, after which an aluminium member 2 is arc welded to the intermediary at 5 using a tungsten electrode in an argon atmosphere and an A.C. welding current with a superimposed D.C. component. In a second embodiment (Fig. 2, not shown), a conductor (6) is secured to a light metal member (2) with the aid of an insulating member (1) which is joined to the light metal member (2) as above. The intermediary 3 may also be of, e.g., Mo, Zr, or stainless steel, while the light metal alloy may be Al-Mg, and the non-metal member may also be of porcelain, a ceramic, an oxide or glass. Specification 838,069 and U.S.A. Specification 2,739,375 are referred to.
Patent GB-1451667-A (GB)
Title: Article transfer apparatus
IPC: B23Q41/02
Filed: 1973-12-07
Abstract: 1451667 Automatic control of INTERNATIONAL BUSINESS MACHINES CORP 7 Dec 1973 [29 Dec 1972] 56805/73 Heading G3N An article transfer is responsive to signals representative of actual and desired positions of a transfer vehicle on a track to move it to the desired position at which it is stopped by means responsive to a means for sensing a position representing stop means. A manufacturing system employing the article transfer apparatus comprises a plurality of processing sectors each of which may have a temporary product storage unit at the output end. As described, the sectors relate to the production of field effect transistor circuits and the transfer is effected by the use of a vacuum chuck having an air passage for raising a circuit wafer into engagement with the surface of the chuck by the Bernouilli effect. The transfer apparatus 2, Fig. 4 comprises a wafer pick-up and release carriage 9 which travels along a guide rail 10 and is positioned adjacent to the input zones of processing sectors 1A-1F. The transport movement is determined over a cable 27 by a handler control unit 111 which specifies the processing sequence. Each pedestal 113 associated with a sector has a photo-sensor, not shown, determining the presence of a wafer 113, which is interrogated by a data processor control system 112. The system 112 decides the next destination of a part 113 and sends an address to the unit 111. The carriage 9 proceeds to the pedestal corresponding to this address under the control of a servo subsystem. The servo subsystem, Fig. 5, is responsive to the address set into a matrix 124 the output of which is fed in analog-form to a coarse position summary amplifier 125 which is also responsive to an actual position voltage from a potentiometer 115 coupled to a carriage drive mechanism. The coarse error signal from summator 125 when outside a permissible position tolerance #EC, through a comparator 126 de-energizes a clutch allowing a coarse drive motor 25 to move the carriage. The comparator energizes the motor 25 in dependence on the coarse error signal by switching an amplifier 123. When the error is within the permissible tolerance, which is within the range of a sensor 120, the clutch is engaged and the drive transferred to a fire position motor 12. At the desired address a comparator 127 energizes a brake and initiates a loading, or unloading Z-motion by a mechanism 117.
Patent GB-1332419-A (GB)
Title: Electro-optical feeler of probe devices
IPC: G01B11/24
Filed: 1971-12-07
Abstract: 1332419 Photo-electric measuring COMPAGNIE DES COMPTEURS 7 Dec 1971 [10 Dec 1970] 56890/71 Heading G1A In an arrangement for determining in a contour mapping or following system the distance away of a point on a surface S from a reference point on a probe. Fig. 4, by bringing the image I, of a light source 1 to focus on the surface point and using the difference in output from a pair of photo-detectors 8, 9 arranged in predetermined positions relative to a pair of reflection image planes P, errors due to the angle of indicence of the axis of the light beam are reduced by using, at least one lens, a centre circle of which is obscured by a screen in at least one of the detector paths. Two lenses 17, 17a may be one in front and one behind the respective plane P as shown, or in a modification using such an obscured lens in only one path, both detectors may be behind their respective planes P. Graphs indicating the improved accuracy are described. A filament lamp or electro-luminescent diode may be used and the intensity may be modulated to overcome ambient changes.
Patent GB-1194748-A (GB)
Title: Apparatus for Carrying Out an Etching Process
IPC: B01D9/00
Filed: 1967-12-13
Abstract: 1,194,748. Etching. INTERNATIONAL BUSINESS MACHINES CORP. 13 Dec., 1967 [27 Dec., 1966], No. 56947/67. Heading B6J. [Also in Division B1] Articles such as copper printed circuit boards are conveyed through an etching chamber below sprays of etchant, such as ammonium persulphate, which collects in the bottom of the chamber at a fixed level controlled by an overflow outlet, the etchant being recirculated by a pump from the bottom of the chamber to the sprays, until the impurity content reaches a certain level as sensed by, for example, a colorimetric monitor, which then actuates valve means to drain off the etchant while admitting regenerated etchant to the chamber. The spent etchant is passed through a crystallization tower to remove the impurities (copper salts) and is then fortified by passing through a salt bed tank containing solid ammonium persulphate, and recirculated to the chamber.
Patent GB-1357550-A (GB)
Title: Method of rock blasting
IPC: F42D3/04
Filed: 1971-12-09
Abstract: 1357550 Hollow charges IMPERIAL CHEMICAL INDUSTRIES Ltd 15 Nov 1972 [9 Dec 1971] 57261/71 Heading F3A [Also in Division E1] In a method of rock blasting rock remote from the rock face is de-stressed by projecting into it the focused shock waves from one or more shaped charges. A series of shot holes of equal depth are bored into the rock face and some are charged with blasting explosive and some with a shaped charge near the bottom of the hole with its cavity facing the bottom, so that the shock wave is projected into the rock ahead of the projected advance to produce a layer of prestressed rock at the face exposed by the blast. The charge has a metal liner, or for example copper or steel, and a cooling sheath comprising water or sodium chloride. One example of the method is described in detail.
Patent GB-1361860-A (GB)
Title: Apparatus for recording and reading-out holographic data
IPC: G03H1/26
Filed: 1971-12-13
Abstract: 1361860 Holography C BOLUSSET M TREHEUX J-C LE GALL and F LEBER 13 Dec 1971 [11 Dec 1970 1 Dec 1971] 57809/71 Heading G2J In a hologram system having a plurality of hologram carriers each carrier consisting of a plurality of superimposed holograms of unique address, the reference beam both during recording and read-out is caused to describe a cone with respect to the hologram carrier, a given azimuthal position on the cone being unique to a given hologram on a carrier. In one embodiment Fig. 1 the hologram carriers are arranged on a disc 2 which is mounted for movement along a radius on guides 7, 7' and for rotary movement about axis 4 to so locate a given hologram carrier in a read-out beam. The read-out beam passes through a prism 13 which is rotated to cause the beam to describe a cone the apex of which is normal to the hologram carrier. Thus any given hologram on a given carrier can be read-out. Alternatively the hologram carriers may be arranged as a rectangular matrix which is moveable in two orthogonal directions. In a further embodiment Fig. 5, the reference beam is deflected by a triangular prism 54 and a pentaprism 55 rotatably mounted about an axis normal to the input face of prism 54, on to an annular reflector 50, concentric about the object beam axis, and so describes a cone with its apex normal to hologram carrier 1. In a further embodiment Fig. 6 the hologram carrier 1 is so mounted on the rotary support 58 of the prisms 59, 60 through which the reference beam passes that the carrier 1 remains stationary whilst the support 58 rotates. In other embodiments both object carrier and hologram carrier are synchronously rotated during recasting, and a Dove prism is inserted into the object beam and rotated at half the angular velocity of the hologram carrier.
Patent GB-1417725-A (GB)
Title: Workpiece position detecting
IPC: G01B7/14
Filed: 1972-12-18
Abstract: 1417725 Applying adhesive patches BRITISH UNITED SHOE MACHINERY CO Ltd 18 Dec 1972 [20 Dec 1971 29 March 1972] 58284/72 Heading B8F [Also in Division D1] Apparatus for applying, to a workpiece U, an adhesive patch cut from a roll of tape 110 comprises rollers 142, 144 driven by a ratchet mechanism 118 and engaging the peeled off release backing 112 from the tape, the separated tape portion advancing over a dispensing portion 116 pivotably mounted on the front of the apparatus and spring urged into the position shown. When the workpiece U is placed on the dispenser the depression of a button 134 operates a switch 136, actuating a cylinder 148 to operate the ratchet and advance the tape and a cylinder 122 to actuate a hammer 147, pivoted to the apparatus, which presses the workpiece against the adhesive coated side 126 of the tape and then depresses the dispenser against the action of its spring to sever the tape on the edge of a knife 124. The tape comprises a metal foil, the patch on the workpiece constituting a low resistance mask thereon to control the operation (see Division D1) of a sewing machine operating on the workpiece.
Patent GB-1300787-A (GB)
Title: Selective printer hammer actuating mechanism
Inventor: BURNS ROBERT CHARLES
IPC: B41J9/38
Filed: 1970-12-10
Abstract: 1300787 Electromagnetic actuators INTERNATIONAL BUSINESS MACHINES CORP 10 Dec 1970 [22 Dec 1969] 58653/70 Heading H1P [Also in Division B6] A print hammer actuator assembly comprises a yoke 141 carrying an electromagnet winding 144 and pivotally supporting an armature 148, the yoke 141 itself being pivotally mounted at 138 on a support 139. A spring 135 urges the yoke 141 against a stop leg 139b. The armature 148 is coupled to a print hammer 160 by a connecting rod 182 which is urged against the armature by spring 184.