baber/WOPTO huggingface dataset:
Patent GB-1220878-A (GB)
Title: Improvements in and relating to communication systems
IPC: H04L27/18
Filed: 1968-06-06
Abstract: 1,220,878. Digital transmission systems. MILGO ELECTRONIC CORP. 6 June, 1968 [1 March, 1968], No. 26883/68. Heading H4P. Differential phase-modulated discretely variable signals are amplitude modulated at the transmitter by a clock frequency, the receiver including an oscillator which is synchronized by the received signals. At the transmitter serial data at rate b is converted into 3-bit groups at rate b/3 which control a phase shifter, as described in Specification 1,220,879. The b/3 rate clock signal fed to the phase shifter is also fed to a divide-by-2 unit whose output, delayed by 90 degrees, amplitude modulates the differential phase-shift signals. The resulting signal is reduced in frequency and passed to a telephone line via a narrow band filter. Because certain data inputs may cause the a.m. clock signal to be cancelled the clock signal from the divide-by-2 unit is periodically or randomly phase inverted. At the receiver the signals pass via a narrow band filter and equalizer to a unit which increases the frequency, the resulting signal passing to the demodulator and to a clock retrieval unit. This signal may have the form shown at 400, Fig. 4, and includes minima at the rate of b/3 or b/6. The signal is half-wave rectified at 220. The R-C circuit 406, 407 maintains the base of transistor 410 at a substantially constant value which is such that the transistor becomes back-biased by the voltage across resistor 412 when the amplitude of the signal envelope 400 exceeds that value. Consequently the output signal is as shown at 402. This contains a component at frequency b/3 which will pass via filter 240 and a limiter to control an oscillator which feeds the demodulator.
Patent GB-947967-A (GB)
Title: Improvements in and relating to the recording of information
IPC: G11B20/10
Filed: 1962-07-12
Abstract: 947,967. Recording data; verifying. SYLVANIA ELECTRIC PRODUCTS Inc. July 12, 1962 [July 12, 1961], No. 26887/62. Heading G4M. A medium 12, such as paper, cardboard or plastic, carries a layer of magnetic material 14, and data are recorded by distorting, and possibly rupturing the layer 14 so as to produce a fring- ing magnetic field. Recording may be effected by means of a solenoid-actuated stylus. The system illustrated in Fig. 6 enables a check to be made on the recording operations. Keyer 44 supplies the information to be recorded to comparator 46 and driver 42. Driver 42 actuates the stylus, or set of styli, and operates contacts to supply the information actually being recorded to comparator 46. Simultaneously with the recording operation, read head 34 derives signals representing the recorded data and supplies them to comparator 46. An error indication is obtained if the inputs A, B,C do not correspond. The carrier medium 12 may be covered with a continuous magnetizable layer 14, or separated strips may be formed thereon or in depressions therein, the strips comprising individual data channels. A protective layer may be superimposed on layer 14. Specification 655,357 is referred to.
Patent GB-339340-A (GB)
Title: Improvements in and relating to the treatment of phosphate rock and the like
IPC: C01B25/22
Filed: 1929-09-04
Abstract: 339,340. Odda Smelteverk Aktieselskabet, and Johnson, E. Oct. 27, 1928, [Convention. date]. Manures.-Rock phosphate is treated with nitric acid preferably of about 50 per cent strength, of which either an excess or a deficiency may be used, solutions being obtained of such concentration and composition that by cooling, for example to temperatures from about 10‹ C. down to the freezing point of the solution, a substantial part of the calcium nitrate separates as Ca(NO3)2 4H2O, leaving the phosphoric acid and the remainder of the lime in the mother liquor. The rock phosphate may be calcined prior to the treatment. Before separation of Ca(NO3)2 4H2O and while the solution is still warm insoluble residues may be removed by filtration. In this case a smaller quantity of nitric acid may be used initially, a further addition being made after the filtration. The mother liquor may be partially or completely neutralized with ammonia and subsequently dried to obtain a mixed fertilizer. The mother liquor may also be utilized to obtain compound fertilizers, phosphoric acid ammonia or alkali phosphates, chemical salts and the like by known processes. Examples are given.
Patent GB-397315-A (GB)
Title: Improvements in or relating to transparent signs and the like
IPC: G09F13/24
Filed: 1932-09-29
Abstract: 397,315. S i g n s. ELFBORG, K., 8, Malmtorsgatan, Stockholm.-(Assignee of Larsson, G. O. ; 31, Narvavagen, Stockholm.) Sept. 29, 1932, No. 27055. Convention date, Sept. 30, 1931. [Class 3 (ii).] In signs &c. comprising tubes containing coloured liquids which do not appear to move and through which light is passed, an expansion chamber 16 is formed in the tube 10 to allow the liquid to change in volume with change of temperature. The chamber 16 is disposed at the top of the tube 10, and in the cases in which the letter or design has a horizontal top run, the expansion chamber 16 is disposed as shown in Fig. 5 so as not to obscure light passing through the tube. The tube 10 may be embedded in a block 11 of plaster of Paris held in a frame 14, Fig. 2, on a slotted wall 12 which fits over a casing 13 containing lamps 15 The chamber 16 is hermetically sealed either by fusion or' by a plug coated with cellulose &c., and may be filled with an inert gas.
Patent GB-452065-A (GB)
Title: Improved manufacture of solid, water-soluble aluminium acetate
IPC: C07C51/43
Filed: 1935-10-01
Abstract: Solid water-soluble aluminium acetate which is stable to storage is obtained by evaporating to dryness solutions containing less than 4 but preferably at least 2,9 mols of acetic acid per mol. Al2O3 Freshly prepared solutions are preferably employed and evaporation may be effected in large shallow dishes at 70--90 DEG  C., on a cylinder drier, or in a vacuum drier at 50--90 DEG  C.  A statement of prior art refers to the evaporation of \ba1/3\be basic aluminium acetate solutions at temperatures below 38 DEG  C., and to the atomization drying of aluminium acetate solutions.
Patent GB-232134-A (GB)
Title: Improvements in concrete fencings
IPC: E04H17/14
Filed: 1924-11-13
Abstract: 232,134. Gõrtner, P. Nov. 13, 1924. Concrete fencing.-A, fence comprises posts b built up from hollow blocks e, the cores P of which subsequently are filled up, a continuous base d made from similar blocks, alined vertical plates c the tongues f of which engage in the holes g in the blocks in the base, and a capping d for the plates. The blocks, plates and capping may be tongued and grooved for interlocking with one another.
Patent GB-503530-A (GB)
Title: Improvements in the testing of materials
IPC: G01N3/38
Filed: 1937-10-07
Abstract: 503,530. Testing fatigue of materials. HEILBUT, M. H. Oct. 7, 1937. No. 27183. [Class 106 (ii)] In apparatus of the kind in which a test piece is supported in a magnetic field, and is vibrated by alternations of the magnetic flux, the alternating electromotive force is obtained from a generator driven at an adjustable speed to vary the frequency of the alternations of stress on the test piece. A motor 4 mounted on a bed 9 on the frame 1, 2 of the machine drives an A.C. generator 3 through a change-speed device constituted for instance by an expanding pulley 7, and a belt 5. The field coils of the machine 3 are supplied with current from a D.C. machine 17 driven by a belt from a motor 15. A.C. mains 20 supply the current and a panel is fitted with control switches 21, 23, 25, 27. A speedometer 13 is driven by a flexible shaft from the machine 3. The specimen, for instance a tube 50, is secured for instance at one end to a base 41 by a flared end and ferrule as it would be in practice, and may be moved towards or away from an electromagnet 30 by means of a screw 42. The magnet 30 may be moved by a screw 36 up and down on guides 32 to accommodate specimens of different !ength. In use, the specimen is mounted while moved away from the magnet and the latter excited causing the specimen to vibrate. The best results are obtained by tuning the alternating flux to the natural frequency of the test piece by adjusting the motor 4 on its bed 9 by the screw 10 thus varying the speed of the dynamo 3. The maximum amplitude of vibration is obtained and this indicates that the flux is correctly tuned. The specimen is now moved towards the magnet until the desired amplitude is reached. Failure of the specimen is observed by noting decrease of the amplitude showing that the specimen has fallen out of tune. The speedometer gives the number of reversals. The magnet may be brought into tune again and test continued to destruction.
Patent GB-1466514-A (GB)
Title: Low ground pressure track shoe
IPC: B62D55/26
Filed: 1975-06-27
Abstract: 1466514 Track shoe for endless tracks CATERPILLAR TRACTOR CO 27 June 1975 [24 Oct 1974] 27256/75 Heading B7H A track shoe for an endless track comprises front and rear sidewalls 13, 14 which converge downwardly and at the ends 17, 18, triangular flat portions 19-22 extending outwardly from the sidewalls at the comers of the shoe, and a grouser surface 25 having a straight central portion 26 with upwardly and outwardly inclined end portions 27. The shoe is provided with links 28 for attachment to adjacent shoes and has front and rear lugs 23, 24 which overlap with those of adjacent shoes. In other embodiments holes may be provided in the inclined side walls to allow for egress of dirt. A further link arrangement, Fig. 8, comprises a plate 34 welded at 35, 36 to the sidewalls and to which two spaced links 28a are attached. In a further arrangement (Fig. 10, not shown) links (28b) are bolted to a bearing block releasably bolted to the shoe sidewalls.
Patent GB-729716-A (GB)
Title: Improvements in method and apparatus for printing
IPC: B41F31/28
Filed: 1953-10-05
Abstract: 729,716. Inking-apparatus. LEVEY CO., Inc., F. H. Oct. 5, 1953 [Nov. 13, 1952], No. 27274/53. Class 100 (2). Printing ink is applied to an ink-transfer roller by means of a brush co-extensive with the length thereof and rotating, close thereto but out of contact therewith, about an axis parallel to the roller axis, the bristles of the brush (projecting outwardly relative to its rotary axis) being wetted with ink, which is thus thrown on to the ink-transfer roller in part at least by centrifugal force. Shields may be provided to prevent ink from being flung over other parts of the press, or as in the rotary press show, the brush 10, rapidly rotated, e.g. at 60-600 r.p.m. by a variable-speed electric motor, may be set within a cluster of ink-transfer rollers 3 ... 9 ; a train 11 ... 14 leads from the roller 7 to the plate cylinder 15. The brush is charged with ink by contact with a suitable ink-carrying surface such as a slowly rotating fountain roller 2 having a doctor blade 28 locally adjustable along its length; the brush bristles may be flexed or not by this contact. A cylindrical brush having radial bristles over its entire surface, or over one or more segments, may be used, or separate elongated brushes comprising bristle or the like 16 cemented &c. in metal blocks 17 may be detachably clamped to a hub member 21 by brackets 20 held by screws 19; each block 17 has a groove 18 engaged by a lug 23 on its bracket 20; end flanges 24 prevent longitudinal movement of the blocks 17.
Patent GB-1508853-A (GB)
Title: Mounting devices for safety belts particularly for use in motor vehicles
IPC: B60R22/28
Filed: 1975-06-27
Abstract: 1508853 Seat belts P DE BOSREDON and A COSSET 27 June 1975 [4 July 1974] 27274/75 Heading A3V [Also in Division E2] The webbing 18 of a safety belt entrains a wedge 10 mounted and held in a matching cavity by an electromagnet 13. Reverse actuation of the electromagnet e.g. by an inertia switch at the onset of an emergency clamps the belt in the cavity, Alternatively, or in addition as a fail - safe mechanism, a spring may urge the wedge to a clamping position. The webbing is normally moved inwards by an elastic strap 5 fixed to a strap 2 carrying a pulley 3 around which the belt is entrained.
Patent GB-431463-A (GB)
Title: Improvements in and relating to the voltage regulation of inverters
IPC: H02M7/44
Filed: 1933-10-04
Abstract: 431,463. Converting. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Allgemeine Electricitõts-Ges. ; 2, Friedrich Karl-Ufer, Berlin) Oct. 4, 1933, No. 27334. Void [Abridged as open to inspection under Sect. 91 of the Acts, April 5, 1934]. [Class 38 (ii)] In a parallel-type self - excited inverter the output voltage is automatically regulated by varying the frequency of operation by means of a resistance - condenser combination 30, 29 in the grid circuit. The grid transformer 19 is supplied from a winding on the main transformer 17 so that variation in the voltage alters the time constant of the resistance-condenser combination and thereby the frequency. The particular load characteristic of the arrangement is determined by the values of the resistance and capacity. Additional regulation is obtained by automatically varying the phase of the grid potentials by means of a phaseshifting circuit containing a voltage dependent resistance 18<1> such as a metal filament lamp. If a carbon filament lamp is used the condensers 18<11>, 191 should be replaced by inductances. Further regulation may be effected by connecting the resistance 181 to the D.C. circuit through a neon tube 23 and choke 22.
Patent GB-717593-A (GB)
Title: Method and apparatus for the winning and conveying of coal and other minerals at a curved face
IPC: E21C35/12
Filed: 1951-11-22
Abstract: 717,593. Minerals. RITCHIE, C. Nov. 24, 1952 [Nov. 22, 1951; Jan. 8, 1952; Feb. 11, 1952; Aug. 12, 1952], Nos. 27391/51, 532/52, 3581/52 and 20229/52. Class 68 (1) [Also in Group XXX] In the winning and conveying of mineral at the transition zones from the ends of a longwall face S to the roadways F of a mine, the winning and conveying take place in curves which extend beyond and thereafter run back to the roadways. At each such zone there is provided a fixed frame 22 having a curved face complementary to that of the zone, said face forming an abutment and guide for the winning means 21 and the conveying means 20. The frame is provided with means 23, 24 to secure it against movement and also to advance it over the mine floor as required, In one embodiment planers 21 are guided on the side form of a double-chain single or double-band conveyer 20 provided with articulated trunking at each curved zone. The trunking abuts against the frame about which circulates an endless chain or chains 25. The chain or chains 25 pass through that part of the conveyer trunking adjacent the frame so that arms or teeth 28 on said chain or chains engage the adjacent portion or portions 30 of the chains of the conveyer so as to deflect this portion or portions to an extent sufficient to take up the slack in the portion or portions as it or they pass around the curve. In a second embodiment the innermost ends of the pusher elements of the conveyer are engaged by projections on the endless chain or chains, to be correctly positioned by said projections as the elements pass around the curve. In a third embodiment the working and idle runs of a single-chain conveyer pass around the curved zone on rollers positioned in channels in the frame, and a cam surface is associated with the frame to move the flights of the conveyer through 90 degrees from a horizontal working run to a vertical idle run. In a fourth embodiment interconnected peeler-scraper boxes win and convey the mineral along the face and at a transition zone are guided around the frame either on rollers mounted thereon or by the projections from an endless chain as in the first embodiment.
Patent GB-260990-A (GB)
Title: A process for making grey iron castings of any desired structure
IPC: C21C1/08
Filed: 1926-11-02
Abstract: 260,990. Maschinenfabrik Esslingen. Nov. 6, 1925, [Convention date]. Casting processes; castings. - Grey iron castings of any predetermined thickness are obtained with any desired texture by using iron having a total percentage of carbon and silicon necessary to give such texture in a casting of required thickness with normal cooling, this percentage being readily found from a diagram, Fig. 1, based on information previously obtained. The vertical lines represent thicknesses of castings in m.m. and the horizontal lines percentages of carbon plus silicon. The area I indicates the limits within which the cast iron solidifies white, area II<a> chequered, area II pearly, area II<b> transition between pearly and ferritic and III ferritic. Where the thickness varies slightly a composition can be found to give uniform texture but if it varies too much it may be necessary to thicken those parts c, Fig. 4, of thin walls b where texture is important, the extra thickness being subsequently removed. The walls b form part of a water jacket of an internal-combustion engine a.
Patent GB-771755-A (GB)
Title: Improvements relating to fastener devices
IPC: A44B19/40
Filed: 1955-09-27
Abstract: 771,755. Sliding clasp fasteners. CUE FASTENER CORPORATION. Sept. 27, 1955, No. 27513/55. Class 44. In a method of making a sliding clasp fastener, a stringer of fastener elements is fixed along a strip of flexible material by an overedge stitching operation by passing loops of thread around the stringer between the fastener elements, at least one loop being positioned between each pair of elements and fixing the loops on opposite sides of the strip, by other loops of thread which oass through the strip. The term " stringer refers to a string of fastener teeth which may be joined integrally or by attaching the teeth to a cord or to the turns of a coil, but does not include the tape or fabric strip to which the coil or connected teeth are fastened. As shown diagrammatically in Fig. 1, a coil type stringer is attached to the selvedge edge 12 of the tape 11 by an over-edge type sewing machine, one needle of which passes a thread 16 along and through the tape 11 while two other needles alternately thread loops 13, 13a, &c., and 14, 14a, &c., around the edge of the fabric and the turns 17 of the stringer 10, the loops 13, 13a, &c., and 14, 14a, &c., being caught on opposite sides of the fabric respec. tively by the thread 16 and by loops 22, 23, &c. thereof formed by the thread as it passes through the fabric. In an alternative arrangement, Fig. 2 (not shown), both threads of a loop 13 may pass between two turns of the stringer instead of straddling one turn as in Fig. 1. Beading cords may be stitched on opposite sides of the tape to serve as guides for the fastener slider. In the arrangement according to Figs. 5 to 7, fabric 35 is folded to form a fold edge 36 to which a stringer 37 is secured by loops 38, 39 and stitching 40. Beads 44, 45 are attached to the fabric 35 by sewing and the fabric is then unfolded, Fig. 7, to form a " covered type " fastener. In a further arrangement, Fig. 8 (not shown), the stringers each consist of teeth-like elements clamped to a beaded cord which is attached to a tape by over-edge stitching in a manner similar to that described for the coiltype stringer.
Patent GB-1271264-A (GB)
Title: Improvements in or relating to props, particularly applicable to mine roof supports
Inventor: MAPPIN HARRY
IPC: E21D15/54
Filed: 1969-05-30
Abstract: 1,271,264. Pit props. GULLICK DOBSON Ltd. 14 May, 1970 [30 May, 1969], No. 27536/ 69. Heading E1E. A pit prop 10 which may form part of an advancing unit is connected to a base or roof canopy 12 by a pair of arcuate members 16, 18, 19 of L-shaped cross-section which permit a degree of articulation therebetween. The other end of the prop, such as its lower end, may be connected to a base 11, 13 by a bolt 14 to allow pivoting.
Patent GB-1253537-A (GB)
Title: Fluid control valve
Inventor: BENSON ANTHONY JOHN
IPC: F16K31/68
Filed: 1968-06-10
Abstract: 1,253,537. Valves. DRAYTON HYDROFLEX Ltd., and A. J. BENSON. 5 May, 1969 [10 June, 1968], No. 27557/68. Heading F2V. A fluid control valve in which a closure member 5 is moved by, e.g. a thermostatic control system 12, via a push-rod 10, comprises a thin-walled membrane-like sheath 13 enveloping the push-rod, and having a flange 14 bonded to a backing plate 15 fixed between portions 7 and 16 in a housing 1. The member 5 is forced on to a seat 4 by the system 12 against the loading of a spring 18, and in the open position the sheath 13 is compressed, whilst in the closed position it is extended.
Patent GB-1510782-A (GB)
Title: Method of and apparatus for joining components
IPC: C09J161/20
Filed: 1974-06-21
Abstract: 1510782 Mixing apparatus BRITISH INDUSTRIAL PLASTICS Ltd 16 April 1975 [21 June 1974] 27783/74 Heading B1C A process for joining components comprises providing in a vessel 1, Fig. 1, a synthetic resin-based adhesive free from hardener, circulating the adhesive through the vessel and through a circuit 4 external of the vessel, extracting adhesive from the external circuit, adding a hardener to the extractive adhesive to render it curable, and applying the curable adhesive to at least one of two components to be joined. The adhesive is supplied to the vessel 1 from a mixer 2 into which is continuously fed urea-formaldehyde adhesive resin, finely divided china clay, and water, the mixture passing through an outlet 3 to the vessel. The adhesive is circulated through the vessel and the ring circuit 4 by a slowspeed pump 5, the circuit having valve-controlled take-off conduits 6 to which is fed a hardener from storage tanks A, B connected by metering devices 8 and a common feed 9 to the conduits 6. The conduits 6 have. applicators 7 for applying the curable adhesive to at least one of two components, such as panels, to be laminated. The mixer 2 has a cylindrical casing 16, Fig. 2, with a hemispherical lower end and a detachable top which has a plurality of inlets 12, 13, 14 and rotatably supports a stirrer 11. A partition 16 extends to near the bottom of the casing and separates the inlets from the outlet 15. In another embodiment, the outlet is near the bottom of the . casing and cylindrical partitions extend from the top and bottom of the casing.
Patent GB-794274-A (GB)
Title: Diphenyl compositions
Inventor: PAYNE JOHN
IPC: A23B7/154
Filed: 1955-09-30
Abstract: Fruit or other agricultural products are preserved by means of wrapping materials coated or impregnated with a solution or its emulsion in water of diphenyl in a liquid hydrogenated polyphenyl, or by dipping the products in an aqueous emulsion of the solution containing preferably 2 per cent or more of diphenyl.  Preferably the hydrogenated polyphenyl is obtained by hydrogenating until liquid at ordinary temperatures the mixture of polyphenyls resulting from the pyrolytic cracking of benzene from which mixture diphenyl has been removed.  The solution can contain between 10 per cent and 25 per cent of diphenyl.