baber/WOPTO huggingface dataset:
Patent GB-1048414-A (GB)
Title: Improvements relating to apparatus for indicating small movements
Inventor: NOBLE PETER JOHN WELLESLEY
IPC: G01D5/26
Filed: 1962-08-02
Abstract: 1,048,414. Photo-electric position finding. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Aug. 1, 1963 [Aug. 2, 1962], No. 29772/62. Heading H4D. [Also in Division G1] Optical apparatus for indicating small movements of a body from a straight line, or from a plane defined by the axis XY (Fig. 2) of a pair of fixed concave mirrors 1, 2 (Fig. 1, not shown) involves the production of a reference position 8 for the image of an illuminated object 7 and the measurement of the deviation of the image from this reference position due to the movements of the body. The object is in the form of a slit 13 (Fig. 2) in a plate 4, contained in a holder 9 attached to the body, and the reference position 8 for the image 18 is obtained by arranging for two partially reflecting plates 5, 6 also contained in the holder, to be on the axis XY. The image is then formed at a point, the reference position 8, spaced from the object, but is effectively on the axis XY, coincident with the object. Any movements of the holder (or body) and thus the object, from the axis XY, result in a displacement of the image from the reference position, which is fixed in space relative to the holder 9. Measurement of the displacement is accomplished by means of a photo-cell 17 mounted in the holder, which measures the variation in the intensity of the light reaching it, via a diffusing screen 16, from the image 18. This variation is produced by an oscillating rod 15, which has a width the same as that of the slit 13, and which moves periodically across the image. The rod is attached to the end of a bar magnet (Figs. 3, 4, not shown) which forms part of a magnetic circuit and is pivoted to oscillate under the action of an alternating magnetic field. The rod has a mean position, which it occupies twice each cycle and when the image of the slit is in correct alignment with this mean position, a minimum amount of light reaches the photocell. If there is an error in alignment (#) then the photo-cell receives a different amount of light. The electrical signal from the cell can be measured as a voltage or a current, whose polarity and magnitude give an indication of the error #, the frequency of the signal being twice that of the oscillation of the rod. The output current can be used to operate a servodevice which reduces the error in alignment thus enabling the apparatus to be used as a null detector to indicate when the body is correctly aligned. For indication of movements of the body from a straight line in two mutually perpendicular directions, an object of two crossed slits is used together with two rods independently oscillating at different frequencies, the two components of the photocell signal being examined independently in a suitable discriminating circuit.
Patent GB-464325-A (GB)
Title: Improvements in reciprocating-piston meters for liquids
IPC: G01F3/18
Filed: 1936-11-02
Abstract: 464,325. Liquid-meters. SAUSER, A. Nov. 2, 1936, No. 29778. [Class 69 (ii)] In a meter for dispensing liquids four radial cylinders are arranged in the same plane, opposite pistons being connected by yokes 5, 6. The latter are slotted and are engaged by a crank-pin 7 on a member 9, having a dog 10 engaging a slot in the end face of the distributing valve 14<1>, which is integral with the shaft 14. The shaft 14 is supported by a ball bearing 30, the inner race of which is clamped between a washer 26 and a nut 35 on the shaft. The member 9 is clamped by a bolt 12 passing through the shaft 14. The bolt has an eccentric portion 12<1> engaging the member 9, so that rotation of the bolt adjusts the throw of the crank-pin 7. A manually-rotatable spindle 31 carries a lever 16 having a hooked end adapted to engage a notch in a stop disc 15 on the shaft 14. A second lever 17 on the spindle 17 opens a lift valve 18, which admits the liquid. The liquid passes through the passage 40 in the valve to the cylinders and is discharged through a passage 43 in the valve and the opening 2 in the casing.
Patent GB-443743-A (GB)
Title: Improvements in and relating to the lubricating washers of cap spinning and twistingspindle apparatus
IPC: D01H7/20
Filed: 1934-10-18
Abstract: 443,743. Lubricating means for cap spinning - spindles. GREENWOOD, S., 27, Ashbourne Road, Bolton Lane, Bradford. Oct. 18, 1934, No. 29790. [Class 120 (ii)] A supporting and lubricating washer for cap spinning - spindles comprises a boxwood cup A provided with a felt - packing recess B, a recess E, and an upper concave recess H in which the lower end of the wharl rotates, dispersion of lubricant by centrifugal force being prevented by a guard cover F.
Patent GB-1262997-A (GB)
Title: Improvements in chopper circuit
IPC: H03F3/393
Filed: 1969-06-12
Abstract: 1,262,997. Transistor chopper circuits. GENERAL ELECTRIC CO. 12 June, 1969 [21 June, 1968], No. 29839/69. Headings H3T and H4L. A field effect transistor connected across a balanced transmission circuit to act as a chopper has its substrate connected to earth to reduce chopping drive feed-through. The chopper drive may be of sine or rectangular waveform and the transmission circuit may be connected to the input of a differential amplifier.
Patent GB-1359309-A (GB)
Title: Apparatus for optical information processing
IPC: G02F1/03
Filed: 1971-06-25
Abstract: 1359309 Optical information processing PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 25 June 1971 [29 June 1970] 29939/71 Heading G2J In optical information processing apparatus a beam of radiation 1 from a laser is modulated byanelectro-optic crystal 2 on one face of which the information to be processed, in the form of electric charges may be deposited or removed, the modulated light passing an analyzer 5 and then being conveyed by lens 6 on to a recording medium 7, e.g. a photographic film or target of a camera tube, located in the back focal plane of lens 6, there being located in the radiation path between the laser and the analyzer 5 a phase shifter 4 which produces a constant phase shift of sign opposite to that introduced by the electrooptic crystal 2. (This filters out the zero order of diffraction). The crystal 2 is disposed in a tube 3 comprising an optical relay (see Specification 1160923). The phase shifter 4 may precede or follow the crystal 2. In an alternative embodiment the crystal 2 is given a coating 9 on one face to form a dielectric mirror (Fig. 4). Consequently there are three possible positions for phase shifter 4, although if beam splitter 8 is a polarizing beam splitter phase shifter 4 may only be located between the beam splitter and the crystal. The phase shifter 4 may comprise a compensator in the form of two wedge-shaped plates, the neutral lines of which are parallel to the neutral lines induced in the crystal; or a Kerr cell the electrodes on the opposite faces of which are parallel to the direction of propagation of the light and to one of the neutral lines induced in the crystal 2; or a Pockels effect cell the induced neutral lines of which are parallel to those induced in crystal 2. The crystal 2 is preferably aPockels effect cell of KH 2 PO 4  and may be integral with the phase shifter 4. The apparatus has use in spatial Foric transform, holography, character recognition, optical filtering. Several such apparatus may be used together.
Patent GB-462998-A (GB)
Title: Improvements in or relating to the production of titanium dioxide
IPC: C01G23/053
Filed: 1935-10-30
Abstract: Titanium hydrates are obtained by adding a solid alkali titanate or the product obtained by leaching the latter with water and/or dilute sulphuric acid to a titanium salt solution and heating the solution to promote hydrolysis.  Hydrolysis may be effected at atmospheric pressure at or below the boiling point of the solution or by boiling the solution under pressure, and the added titanate &c. is preferably used in a dry state.  Solutions of titanium sulphate containing 150 to 250 grms. per litre and having a factor of acidity of 60--90 may be employed.  Alkali titanate for use in the process may be obtained by fusing or fritting ilmenite, rutile or titanium oxide with caustic soda or potash; for example, rutile is mixed with a 75 per cent caustic soda solution, the mixture kneaded, soda ash added, and the whole heated to 300 DEG  C. and then calcined at 600--650 DEG  C. for 30 minutes to yield a fine granular powder.  The quantity of titanate added may be 5--20 per cent of the weight of titanium dioxide in the solution, whilst the quantity of leached titanate used may be 1--10 per cent of such weight.  Hydrolysis may be effected in the presence of an extender such as barium sulphate, and the products of hydrolysis may be washed and calcined at 800--1000 DEG  C. to produce pigments.  Calcination may be effected after adding neutralizing agents and in the presence of sintering agents, and the calcined product may be ground wet or dry, and if wet ground, dispersing agents may be present.  Specification 451,890 is referred to.
Patent GB-831982-A (GB)
Title: Starting control for gas turbine engines
IPC: F02C7/26
Filed: 1956-10-03
Abstract: 831,982. Gas-turbine plant. BENDIXAVIATION CORPORATION. Oct. 3, 1956[Oct. 24, 1995], No. 30171/56. Class 110 (3).[Also in Group XXIX] A fuel control system for gas-turbine engines has a fuel manifold 18, a main fuel flow path 11, 13 supplying fuel from a source to the engine and containing a main control means 12 regulating flow, a second fuel flow path 38, 40 connected to the source, a second control means, e.g. valve 36, actuated, e.g. by a diaphragm 46 in response to manifold pressure to deliver fuel through the second path in addition to that delivered by the main path until a predetermined manifold pressure is reached. This predetermined pressure acts via a restriction 48 to lower piston valve 36 and close the by-pass around the valve 12. In a second embodiment the valve 36 is actuated by a differential piston, the small end being exposed to manifold pressure via a restriction and the large end similarly exposed through an orifice adjustable by a thermally actuated needle valve responsive to fuel temperature.
Patent GB-1441275-A (GB)
Title: Ground effect load lift assembly
IPC: B60V3/02
Filed: 1973-06-26
Abstract: 1441275 Air cushion vehicles TEXTRON Inc 26 June 1973 [15 Jan 1973] 30259/73 Heading B7K An air cushion device comprises a load carrying platform or container 12 having a plurality of cushion modules 14, 16 secured in sealed relationship around its perimeter. A flexible skirt comprising fingers 18 or flexiblyconnected panels (Fig. 3, not shown) is secured around the entire perimeter. Bracing members 46 stabilize the platform 12 and prevent the modules 14, 16 folding upwardly. One or more modules carry air supply means 40 to supply cushion air or a connection 42 may be attached to a supply hose of a remote air compressor 44. In an alternative embodiment (Fig. 5, not shown) the outer edges of the modules are arcuate whereby the skirt is convoluted around the periphery. In a still further embodiment (Fig. 10, not shown) one or more cantilever structures bridge and are connected to the top of the load.
Patent GB-446175-A (GB)
Title: A new or improved paper tube to be employed for the winding of textile threads thereupon, and manufacture of such tubes
IPC: B65H75/10
Filed: 1934-10-23
Abstract: 446,175. Cop tubes. LOWRY, A. S., Oakwood Mills, Romiley, Cheshire. Oct. 23, 1934, No. 30312. [Class 120 (iii)] A paper tube, for use on a spinning spindle having a slight swell thereon is formed in two sections a, b, Fig. 1, the section b fitting upon the lower part of the spindle having the swell and the section a fitting upon the upper portion of the spindle. The tube may be made from a blank, Fig. 3 having a slit f, the edges of which are overlapped as the tube is wound on an appropriately-shaped mandrel.
Patent GB-950807-A (GB)
Title: Improvements in and relating to multiple die punches
IPC: B21D28/12
Filed: 1962-08-08
Abstract: 950,807. Punching. C. BEHRENS A.G. Aug. 8, 1962 [Aug. 30, 1961], No. 30320/62. Heading B3W. A turret plate for a multiple punch press has a hold-down and stripper plate which moves in advance of the punch and which holds the material until the punch has been withdrawn. An upper turret plate 1 and a lower turret plate 2 are mounted on spindles 3 and 4 in a frame 5. Tool-holders 6 are mounted in the plate and moved in turn into engagement with a ram 7. A hold-down and stripper plate 8 is mounted on a shaft 9 which is free to move axially in the spindle 3. Within the shaft 9 is a resilient member 11 and a tappet 27 which is acted on by a cam 15 on the driving shaft 25. Operation.-The movement of the plate 8 precedes the movement of the tool-holders 6 so that the hold-down is in contact with the workmaterial before the punches operate. During this movement the resilient member 11 is loaded beyond its normal condition so that it remains in contact with the work as the punch is withdrawn until the latter is clear of the work. The hold-down is finally lifted by springs 12. In a modification the hold-down is mounted on a rigid shaft 9 which has a camfollower roller 32 at its upper end. The shaft is released for downward movement by the longitudinal movement of a rod 20 which has a cam 21 formed thereon, and which operates the tool-holder 6 through a toggle linkage 31. The hold-down and stripping pressure in this instance is provided by resilient members 41 situated between the turret plate 1 and the hold-down plate 8.
Patent GB-618287-A (GB)
Title: Method of and means for marking or rusticating bricks and the like and the brick produced thereby
IPC: B28B11/08
Filed: 1946-10-11
Abstract: 618,287. Roughening unburnt bricks &c. YORKSHIRE BRICK CO., Ltd., and PHILLIPPS A. G. Oct. 11, 1946, No. 30352. [Class 87 (ii)] A device for marking or rusticating bricks and the like comprises one or more pairs of marking tools 4, the tools of each pair being disposed one on each side of the clay column issuing from a die so as to mark the end faces of a brick, and a further marking tool (or tools) 5 disposed above the column so as to mark the upper face of a brick, the tools being adjustable towards and away from the clay column and mounted either for simultaneous or for successive operations thereon. The tools 4 and 5 may be either fixed or resiliently mounted, and may conveniently comprise flat bars having projections by which the desired markings are applied. As shown, the tools 4 are disposed vertically, each fixed between two brackets 3, and the tool 5 is suspended horizontally from a bar 6 which is screwed to the free ends of spring brackets 8. The tools 4 are adjusted by means of screws 4a and the tool 5 is adjusted by the nut 9a on the screw 7b. Springs 10 are disposed between the bar 6 and the tool 5, nuts 9 being provided on screws 7a for adjusting the load on the springs.
Patent GB-1376044-A (GB)
Title: Inner tubes for pneumatic tyres
IPC: B60C5/04
Filed: 1972-06-28
Abstract: 1376044 Tyre inner tubes MICHELIN & CIE (COMPAGNIE GENERALE DES ETABS MICHELIN) 28 June 1972 [28 June 1971] 30367/72 Heading B7C A tyre inner tube 1 consists of an extruded tube 4 of an elastomer having a Shore hardness of less than 50 reinforced by two circumferential bands 5, 6 one each side of a wheel rim engaging zone 3, of an elastomer having a Shore hardness not less than 50, the bands being welded to the tube 4 during vulcanization, and not extending beyond the normal circular shape of the tube cross-section. The width of each band is from 5% to 15% of the circumference of the tube section and has a thickness of between one half and double the maximum thickness of the tube, the latter being thicker in the zone 3 than in the crown zone 2. Both the tube 4 and bands 5, 6 may have a base of butyl rubber.
Patent GB-664685-A (GB)
Title: Improvements in or relating to sectional buildings
IPC: E04B1/343
Filed: 1948-11-23
Abstract: 664,685. Sectional buildings. FRANKLIN-HOWES (ENGINEERS), Ltd., and FAY. T. A. Dec. 2, 1949 [Nov. 23, 1948], No. 30434/48. Classes 20(i) and 20(ii) A sectional building comprises wall and roof sections, each wall section having a flange upon which rests a co-operating flange of a roof section, the flanges preferably being provided by angle irons and adjacent edges of the flanges of the roof and wall sections being secured by hooked bolts, clips &c. As described, each wall section 11 comprises a rectangular frame of angle iron 13, the vertical angle irons of certain sections having one flange in the plane of the section and the other flange 15 directed inwardly and flush with the edges of the sections. Adjacent in-line wall sections are secured together by bolts passing through the adjacent inwardly directed flanges. End and cross wall sections have the vertical angle irons disposed as at 91, Fig. 6, to enable them to be bolted to the vertical angle irons of the other wall sections. The angle iron 19 along the upper edge of the wall sections has one flange 17 vertical and the other 18 horizontal and is arranged to provide a rest for a smaller co-operating angle iron, such as 21, of a roof section. Hooked bolts 31 passing below the flanges 18 and through the covering of the wall sections and secured by a nut hold the wall and roof sections together. Alternatively, clips with springs or clamping screws may be used. The roof sections comprise a framework of prismatic outline consisting of two triangular angle-iron frames 51, 52 joined by struts and braces 25, 53, 55. The member 25 is of angle iron with one flange horizontal to engage the supporting flange of a, wall section and the other flange in the plane of the roof. The vertical faces of two roof sections may be bolted together to form a ridge roof, either before assembly on the previously assembled wall sections or after assembly if the wall structure is such (i.e. two wall sections at a right angle) as to be capable of supporting a single roof section. Doors and windows may be provided in certain wall sections and wall sections may also be used to partition a building. A single roof section and wall section may be used for a single lean-to structure.
Patent GB-761022-A (GB)
Title: Improvements relating to guided bucket hoists
IPC: B66B9/187
Filed: 1954-10-22
Abstract: 761,022. Skip-hoists. NORDGARD, P. O. Oct. 22, 1954 [Nov. 6, 1953], No. 30540/54. Class 78 (3). In a skip hoist the skip 2 is tipped about an axis 8 on the guided carriage by the engagement of rollers 10 with a pair of channel section members 13 which are adapted to be pivoted to an inoperative position (shown dotted) by a manually-operated rod 14. When the skip has been tipped into the position shown at A it discharges into a shoot 15 provided with a gate 16. A chain 3 and a catch 7 are provided to limit the tipping movement.
Patent GB-603262-A (GB)
Title: Resonant cavity oscillators
IPC: H03L1/02
Filed: 1945-11-16
Abstract: 603,262. Oscillators. PHILCO RADIO & TELEVISION CORPORATION. Nov. 16, 1945, No. 30888. Convention date, Jan. 29, 1944. [Class 39 (i)] In a resonant cavity oscillation generator, the plate rod is frictionally engaged at one end with the anode of the vacuum tube positioned at one end of the cavity, and the cavity shell and the rod are of metals of different coefficients of expansion such that the length of the rod varies with temperature and changes the frequency of the oscillator to counteract frequency variations normally arising owing to the temperature change. The resonant cavity 10 comprises a tubular shell 20 of the metal known under the Registered Trade Mark '' Invar " or a similar metal of low coefficient of expansion and supports in the screw-threaded aperture of a disc 21 of insulating material. a plate rod 29 of a metaJ such as copper. The rod 29 carries at its end a bushing 30 which engages the terminal 15a of the anode 15 of a " lighthouse " type triode 11, in which are also a control grid 16 and a cathode 17. The upper end of the rod 29 is screw-threaded and carries a knob 31 so that rotation of the rod enables a longitudinal adjustment to be made. A cup-like metal element 32 on the rod functions as a plate choke. A probe 33 and plate terminal 34 are also provided on the shell. Knowing the extent of frequency deviation of the triode with temperature, the required effective lengths of the brass rod and the " Invar " shell may be determined and, if necessary, the rod may be in two parts, a lower portion of copper and an upper portion of " Invar " secured together by pins or by silver soldering. The cavity shell may also be in two parts comprised of different metals.
Patent GB-643841-A (GB)
Title: Device for determining the measuring value of measuring instruments, especially weighing scales
IPC: G01G23/18
Filed: 1939-11-27
Abstract: 643,841. Recording-apparatus. TOTH, S. Nov. 27, 1939, No. 30896. [A Specification was laid open to inspection under Sect. 91 of the Acts, May 27, 1940.] [Class 106 (iv)] [Also in Group XVIII] Recording mechanism for weighing or other apparatus employing stepped feelers, one in each numerical order, for investigating blades 2 extending radially from the indicator shaft of the apparatus and appropriately setting printing rolls, is characterized by the spacing of the blades 2 being a multiple of ten unit spacings. In the example shown, the blades 2 are spaced by 50 units and that feelers likewise cover 50 units. The units feeler 3 has a stepped profile in which the digit steps 0-9 are repeated five times. The tens feeler 4 has five steps and the tens order sections of the blades 2 are set back five steps at alternate blades so as to provide for the ten different movements of the feeler corresponding to the ten tens-order digits. The hundreds feeler 5 is not stepped, its differential movement being obtained by progressively setting back the hundreds order sections. of the blades 2 at every second blade. The thousands feeler 6 is also not stepped. The limit of the mechanism is 1000 units and all the blades 2 except that corresponding to the upper limit hold the feeler 6 in its zero position.
Patent GB-1101815-A (GB)
Title: Process for the production of vinylchloride
IPC: C07C17/08
Filed: 1965-07-21
Abstract: Vinyl chloride is made by continuously feeding substantially equimolar quantities of hydrogen chloride and acetylene at normal pressure into a reaction chamber containing a mercuric chloride catalyst supported on a fixed bed of a carrier material, removing the gaseous reaction products from the reaction chamber, recycling a portion of said gaseous products to the reaction chamber such that the volume ratio of the fresh reactants to recycled gases is from 1:1 to 1:3, and adjusting the velocity of the gases fed to the reaction chamber so that the reaction occurs throughout the whole length of the chamber at 110-170 DEG  C.  It is preferred to cool and compress to 30-35 DEG  C. and 6-8 atm. gauge, that portion of the products not recycled to obtain a gas phase containing unreacted hydrogen chloride and acetylene and any inert gas introduced with the reactants, and a liquid phase containing vinyl chloride, to further cool the liquid phase and use it as a scrubbing liquid to remove the hydrogen chloride and acetylene from the gas phase, whereafter the hydrogen chloride and acetylene are desorbed from the liquid phase and returned to the reactor. The process is illustrated by reference to drawings (not shown).