baber/WOPTO huggingface dataset:
Patent GB-162140-A (GB)
Title: Improvements in or in connection with the production of imitation oil paintings
IPC: B44F11/02
Filed: 1920-02-26
Abstract: 162,140. Steedman, H. P. G. Feb. 26, 1920. Embossing; embossing-surfaces.-Oil paintings are reproduced by exposing to light a sensitized sheet of gelatine or other suitable material under a photographic negative, or a positive therefrom, prepared from the original painting or a painted copy, developing the exposed sheet to remove the unaffected parts, washing, drying, and hardening the sheet, as by applying formaldehyde, so as to form a matrix having variations in surface level corresponding to the canvas grain, brush markings, and variations in surface level of the painted parts of the original. From this matrix a die is prepared, preferably from plastic casein, wherewith printed copies of the original may be embossed so as to resemble the original. The gelatine &c. sheet is incorporated with sodium chloride and a mucilage of linseed oil, to which is added chrome alum and a sensitizing material such as bichromate of potash and ammonia. The plastic casein is introduced into a frame enclosing the matrix, is rolled and pressed therein, and is subsequently dried and hardened to form the embossing die, which is applied to the face or back of the print, corresponding respectively to the use of a photographic negative or positive; or both a male and a femael die may be used between which the prints are embossed. The following methods of preparing the plastic casein are described, viz. :-(1) Casein mixed with lime or other alkaline material is converted into a plastic mass by the action of water. (ii) Sulphonated rape oil is mixed with dried powdered casein and kneaded into a homogenenous mass, to which resin or caoutchouc and chalk or lime may be added, the product being hardened by vulcanizing with sulphur or by applying formaldehyde. (iii) Milk is heated to 140‹ F., borax is added, and the temperature raised to 190‹ F. in the presence of barium chloride or other mineral precipitant of casein, the precipitate pressed and ground with an addition of acetic acid, soda or other solvent and the resulting mass steam heated. (iv) Casein is made into a plastic mass with an aqueous solution of borax, the excess water removed and nitrocellulose added, the whole being then kneaded into a homogeneous mass. Specification 15108/11 is referred to.
Patent GB-197449-A (GB)
Title: Improved haulage clip
IPC: F16B45/00
Filed: 1922-02-28
Abstract: 197,449. Rowlands, I. J. Feb. 28, 1922. Rope grips. - A rope grip of the type having two jaws h, j forced together to grip the rope by a sliding collar a which is held fast by a cotter or wedge b' passing through slots in the jaws, has the wedge pivoted on or attached to the jaw h by a pin c passing through a slot in the wedge. The slot in the jaw h is formed with an extension g in which the wedge can lie when it is drawn out, to allow the collar to be sslipped up over the wedge and the shanks of the jaws. The jaws are positioned relatively to each other by means of a pin e.
Patent GB-1378652-A (GB)
Title: Thyristor circuit
IPC: H03K17/725
Filed: 1971-03-03
Abstract: 1378652 Controlling thyristors ROTAX Ltd 22 Feb 1972 [3 March 1971] 5959/71 Heading H3T Triggering of a thyristor connected to an anode circuit supply which periodically goes to zero is effected by connecting the gate through an inductive resistor R8 to the positive terminal of a supply and through a switching device T4 to the negative terminal, means being provided which is effective when the switch is closed to bias the gate cathode circuit negatively. As shown, the gate cathode circuit of thyristor SCR2 is connected across the diagonal of a bridge R8, T4, R9, T5 so that when a signal at 17 renders T4 non-conducting and thus T5 conducting the D.C. supply 16 is connected reversely to the gate cathode circuit whereas when T4 is non conducting and T5 is conducting the voltage is applied forwardly, the interruption of the current path through R8 and T4 causing a back e.m.f. to be generated in the inductive resistor R8 which assists switching on of the thyristor. The negative gate cathode voltage in the switch off condition assists switching off and prevents switching on due to spurious pulses. The thyristor may be connected in series with a second thyristor alternately conducting with the first and a control voltage may be applied to a transistor T6 to prevent simultaneous firing of the two thyristors. In Fig. 1 (not shown), the transistor T5 is replaced by a pair of diodes (Dl, D2) which provide the negative bias to the gate cathode circuit when T2 is conductive.
Patent GB-863344-A (GB)
Title: Error diagnosis systems for programme-controlled computers
IPC: G09G1/00
Filed: 1958-02-24
Abstract: 863,344. Digital electric calculating-apparatus. TELEFUNKEN G.m.b.H. Feb. 24, 1958 [Feb. 23, 1957; April 26, 1957], No. 5967/58. Class 106 (1). In a monitoring arrangement for detecting programme errors in an electronic computer, an analogue voltage derived from the instantaneous indication of the order or instruction counter and/or an address register is used for visibly displaying the variations in time of the counter or register contents. The computer RA, Fig. 1, comprises a magnetic drum store SP, arithmetic unit RW, input/output device EA, control unit SW, order register comprising an operation register OP and address register AS, and order counter BZ. The binary stages of BZ are connected to resistors, whose values increase in binary steps in a digital-to-analogue converter DA which this supplies an analogue output voltage proportional to the counter content to horizontal deflecting plates of a cathode-ray oscillograph OS. A time-proportional voltage is applied to the vertical deflecting plates from a time base unit ZA, whereby the trace on the screen indicates the pattern of the programme. The time base voltage may be reset manually or by trigger K1 or K2, which triggers are responsive to particular states of the order counter BZ and operation register OP respectively. The time base deflection may be interrupted during drum search time. Fig. 2 indicates a straightforward programme in which the counter content is increased by " 1 " at each step, the first part of the curve corresponding to predominantly rapid operations such as additions, and the second steeper part corresponding to slower operations such as multiplication. Other examples of typical traces are given, e.g. Fig. 4 illustrates a jump to a sub-routine and back to the main programme. A blue-writing oscillograph may be employed and a number of traces may be superimposed on the screen (Fig. 6, not shown). Special programme points may be indicated by a characteristic mark, e.g. a circle, obtained from additional gate-controlled circuits. A separate similar display may be provided for the address register, or the same oscillograph may be connected by a change-over switch alternately to the two associated digitalto-analogue converters. In a further modification (Fig. 7, not shown), the output voltage from DA, associated with the order counter, is applied through a differentiating network to the horizontal deflecting plates and directly through a compensating delay to the vertical deflecting plates; the output of the differentiating network is negligible except for a jump in the programme, the oscillograph trace thus being, e.g., as indicated in Fig. 8. The differentiation network output may be fed to a beam brightness-control device. Instead of being displayed on an oscilloscope the analogue voltage pattern may be recorded on a chart.
Patent GB-570657-A (GB)
Title: Improvements in winches, hoisting machinery and the like
IPC: B66D1/14
Filed: 1943-04-14
Abstract: 570,657. Winches. CLARKE, CHAPMAN & CO., Ltd., and WOODESON, W. A. April 14, 1943. No. 5979. [Class 78 (v)] A winch &c. comprises a heavy duty winding drum 1 geared through pinions 5, 4 to the shaft 3 of a light duty winding drum 2 gear-driven by steam or electricity. One flange of the drum 1 carries a ratchet wheel engagable in the winding- off direction by spring-pressed pawls on a surrounding sheave 9 embraced by a brake belt 11. The belt 11 is normally kept in tension around the sheave 9 by a weight 13, but this can be raised at will by a pedal 16 to free the brake and allow the load to descend. When the winch is electrically driven a magnetic brake is also provided which comes into action before the foot-operated brake 11 can be applied. Two such winches may be arranged side by side, one to wind a topping lift and the other for hoisting.
Patent GB-696514-A (GB)
Title: Improvements in or relating to selective copolymerization of isobutylene from a c mixture
IPC: C08F240/00
Filed: 1951-03-14
Abstract: Isobutylene in a hydrocarbon mixture containing it with other C3 to C5 olefins is selectively copolymerized with styrene or other copolymerizable organic material containing an aromatic nucleus by mixing the hydrocarbon mixture with the copolymerizable organic material and subjecting the mixture to copolymerization at temperatures not above +10 DEG  C. in the presence of an amount of a metal halide catalyst only slightly in excess of that needed to initiate the reaction, whereby the isobutylene is copolymerized with the polymerizable organic compound to the exclusion of the other olefins in the hydrocarbon mixture.  The catalyst may be aluminium chloride or bromide, titanium chloride or zirconium tetrachloride and may be employed in the solid state or in solution in a non-complex-forming solvent such as methyl or ethyl chloride. Specification 696,513 is referred to.
Patent GB-1462006-A (GB)
Title: Hydraulic loading mechanisms for trucks
IPC: B60P1/44
Filed: 1975-02-13
Abstract: 1462006 Vehicle lifting platform O A E D'HOLLANDER 13 Feb 1975 [13 Feb 1974] 6204/75 Heading B8E [Also in Division F1] A vehicle 2 having a load platform 1 has a loading lift platform 4 supported by arms 6 actuated by a lifting cylinder 14 and by one or more cylinders 7 having upper and lower chambers 19, 20 with pistons 21, 22 and pistonrods 23, 24. An oil tank is provided in a hollow girder 13 on which the arms 6 and cylinders 7 are pivoted by way of cheeks 11. Pressure is supplied by a pump 32 and the system has a stop valve 35 and a control valve 36. The arrangement is such that from the ground rest position, Fig. 1, opening of the stop valve 35 supplies oil to inlets 25, 27 of the cylinders 14, 7 respectively but the areas of the pistons are such that initially the piston 21 is moved and through the oil in the chamber 20<SP>1</SP> moves the piston 22 to raise the platform 4 to the Fig. 2 position. As the piston 21 cannot move further the cylinder 14 through the arms 6 raises the platform 4 in its horizontal inclination to the level of the platform 1 while the spacing a or b of the piston 22 from the end of the piston-rod 23 remains constant. To raise the platform 4 to a vertical position, Fig. 4, oil is fed to the inlet 29 of the chamber 20. When the vehicle is on uneven ground the platform 4 can still assume the Fig. 1 position as the piston 22 acts as a correction piston by varying the spacing a as required to incline the platform 4 as necessary but when a lifting operation is started the horizontal position is always automatically assumed before lifting starts. When the platform is rested on a raised quay a locking bolt is provided under each lever 6 to prevent lowering of the platform further.
Patent GB-452725-A (GB)
Title: Improvements in or relating to belt or band conveyors
IPC: B65H29/14
Filed: 1935-02-27
Abstract: 452,725. Endless - belt conveyers. FULCHER., H. W., Wyham, Orchehill Avenue, Gerrards Cross, Buckinghamshire. Feb. 27, 1935, No. 6252. [Class 78 (i)] In endless-belt conveyers for carrying loose light articles, such as telegrams, of the type comprising a plurality of bands arranged one over the other, each band is formed of a plurality of endless parallel strips having their adjacent edges spaced apart from one another. The gaps between the strips are utilized to prevent the articles being carried beyond a point at which they should be delivered. Figs. 3 and 4a show two forms of obstructing member S which have fingers or rods passing both through the gap and outside the two strips forming the band, the member S being located just beyond a delivery point. Fig. 5 shows the strips forming a band diverted from their normal co-planar state for a short distance by a roller O, a member S being also added to ensure removal of an adhering article. Alternatively a finger passing through the gap and operating a mercury or other electric switch, or a beam of light passing through the gap and influencing a lightsensitive cell, may be used to stop the conveyer driving motor. A bell may also be rung or a lamp lit to signal non-delivery of an article. Fig. 6 shows means for preventing the carrying away of an article which has adhered to the under side of a band. A finger H, pivoted at K to a fixed bracket L, is adjustable relative to a roller Q, which bears against the lower side of the band B, by a screw SB connecting the finger H to a pivoted arm N carrying the roller Q. A spring R holds the roller up to the band. The roller Q may be divided similarly to the band and may have a finger inserted in its gap to prevent articles dislodged from the band winding themselves around the roller. The various coaxial guide rollers G about which the bands ride may be independent or be mounted on a common spindle, and are formed either with flanges or crowns.
Patent GB-412700-A (GB)
Title: Improvements in and relating to doors or covers for pressure vessels
IPC: F16J13/24
Filed: 1933-03-01
Abstract: 412,700. Doors for resisting fluid pressure. PICKARD, H. M. H., and LEEDS & BRADFORD BOILER CO., Ltd., Stanningley, near Leeds. March 1, 1933, Nos. 6254 and 21116. [Class 123 (i).] A detachable or hinged door 7 for a pressure vessel 3 is adapted to seat on the flat annular surface of a mouth ring 1, affixed to the vessel and is kept tightly closed by means of a number of pivoted latches 9 mounted between the mouth ring and a guard ring 10 coupled to the former by bolts 12. The tail ends 13 of the latches project beyond the outer edge of the rings 1 and 10 into slots 14 provided in a locking ring 15 rotatably mounted around the peripheral edges of the rings 1 and 10. Rotation of the ring 15 tilts the latches so that their lower ends 16 swing into position in front of the door and thereby lock it in position. The locking ring may be rotated by hand or by a worm 18 engaging a rack 19 on the locking ring. The mouth ring may be provided with annular packing 6 of L-section. Premature opening of the door is avoided by the interlocking of the mouth ring and the locking ring by projections from a tongue 24 which is held in its lowermost position when the vessel is under pressure by means of a safety valve 20 and links 21-22. The latter may be replaced by a spring-controlled lever operated by a cam disposed on the door.
Patent GB-1293231-A (GB)
Title: Underspeed valve
IPC: F16K31/122
Filed: 1970-02-10
Abstract: 1293231 Valves; change-speed control CATERPILLAR TRACTOR CO 10 Feb 1970 [20 March 1969] 6277/70 Headings F2D and F2V  A valve comprises a spool 13 biased by means 33, a chamber 55 in communication with a fluid inlet, and piston reaction means 59 in the chamber causing the spool to be motivated against the bias. In the preferred embodiment, the valve is employed in a hydrostatic control system for a vehicle and includes a second piston reaction means 53, the two piston reaction means being subjected to the differential pressure from a speed control valve 15. A second differential pressure is applied to the spool through ducts 35, 37 from a Venturi 17 connected to a fixed displacement engine driven pump 19. When the engine speed falls below a predetermined value the pressures from the Venturi move the spool to the right to an inoperative position and the vehicle is controlled solely by the valve 15. Specification 1,237,561 is referred to.
Patent GB-537159-A (GB)
Title: Improvements in reversible glove
IPC: A41D19/00
Filed: 1940-04-08
Abstract: 537,159. Gloves. KIRCHNER, R. V., and MISTELE, F. K. April 8, 1940, No. 6309. Convention date, Nov. 13, 1939. [Class 141] A so-called reversible glove, that is one that can be worn on either hand, comprises identical front and rear blanks 3 each comprising tapering finger portions 5 ... 8 and a thumb portion 4 connected to the base of the index finger by a web 9 substantially transverse to both the inside lines of the thumb and index finger portions, an outward bulge being formed at 10 to accommodate the thumb joint. These blanks are connected together by four fourchettes, Fig. 2, one for the thumb and index finger, separate ones for the second and third fingers, and the fourth for the little finger and extending downwards to the base of the glove. These fourchettes, which are secured by seams 24, Fig. 1, have flared ends 11, 14, 15, 17, 18, 20, and 21, 23, Fig. 2, and narrow portions 12, 13, 16, 19, 22 corresponding to the tips of the thumb and fingers. One continuous fourchette may, however, be used for the whole glove.
Patent GB-565076-A (GB)
Title: Improvements in or relating to tool holders for lathes or like machine tools
IPC: B23B29/16
Filed: 1943-04-20
Abstract: 565,076. Turning. HELIOT, W. D. B. April 20, 1943, No. 6335. [Class 83 (iii)] In a combined tool and work rest of the kind having two flanges 10, 11, the former carrying a supporting shank 12 and the latter a radial cutting tool mounted in a slot 16 and roller steadies 24, the flanges are connected by two pillars 13, 14, having smooth circular crosssections and located at diametrically opposite sides of a work-receiving aperture 15 so as to allow swarf to escape easily. The pillars are splayed as shown in Fig. 2 and are formed as a single casting with the flanges, the shank 12 being screwed thereto. The cutter is secured by four set-screws 20, 21 and the roller steadies are mounted on approximately radial slides 23 adjusted by collars 26 on screws 27 and locked by screws 28 passing through slots in the flange 11, the slides being preferably at 5 degrees and 100 degrees to the horizontal, as shown in Fig. 3. The Provisional Specification describes a modification in which the slides 23 are adjusted by screws engaging threads on one side thereof.
Patent GB-589008-A (GB)
Title: Improvements in or relating to control valves for the outlets of high pressure lubricating systems
IPC: F16N5/02
Filed: 1945-03-14
Abstract: 589,008. Manually-controlled valves. UNI-GUN LUBRICATING EQUIPMENT, Ltd., and MARTONFALVY, I. C. March 14, 1945, No. 6436. [Class 135] A control valve for a high-pressure lubricating system comprises a cylindrical body 10 connected at 12 to the system and at the other end to a delivery nozzle 36 and containing a ball valve 22. By depressing the hand lever 40, the adjustable abutment 32 screwed on the spindle 26 is raised and lifts the inverted cup 23 against the spring 29, thereby allowing the ball to be freely lifted off its seat by the inlet pressure.
Patent GB-880768-A (GB)
Title: Improvements in or relating to automatic trimming systems for the control surfaces of a moving craft
Inventor: FEARNSIDE KENNETH
IPC: G05D1/00
Filed: 1959-02-25
Abstract: 880,768. Automatic steering control systems. SMITH & SONS (ENGLAND) Ltd., S. Feb. 24, 1960 [Feb. 25, 1959], No. 6487/59. Class 38 (4). In a system for automatically trimming a control surface of a craft, signals from an outof-trim detector are applied to parallel control channels the outputs of which are added and cause trimming means to operate at a corresponding rate. As shown, aircraft elevators 1a, 1b are operated by double hydraulic actuators 5 under the control of an autopilot 6. Manual overriding control of actuators 5 may be effected by operating one or other control column 7a or 7b, but, during automatic control, these control columns follow movements of the elevators. Out of trim in either sense is thus detected by the position of the control columns and, when it exceeds a predetermined value, switches 9a, 9b are actuated automatically to operate reversible A.C. motors 16a, 16b in the appropriate directions to trim the aircraft by adjusting tailplane 2 through a differential gear 21. The two motors ensure that if either operates incorrectly the other compensates for the effect. Warning of such incorrect operation is given by an indicator 28 controlled by means 27 which compares the outputs of tachometer generators 19a, 19b driven by motors 16a, 16b respectively.
Patent GB-1124005-A (GB)
Title: Improvements in or relating to heat exchangers
IPC: F25B39/02
Filed: 1966-02-15
Abstract: 1,124,005. Finned heat exchange tubes. SOCIETE RUBANOX. 15 Feb., 1966 [26 Feb., 1965], No. 6533/66. Heading F4S. A natural convection heat exchanger, particularly intended for use as a condenser or evaporator, comprises a plate 2 and a sinuous tube 1 in heat conducting relation, and preferably integral, therewith, the tube comprising straight tube-lengths la, 1b interconnected by short U-shaped sections, the plate being provided with a fin arrangement comprising generally flat fins 14 which may be twisted out of the plane of the plate (Figs. 7-11) and cut-out fins 11, 15 of trapezoidal outline extending some to one side and some to the other of the plane of the plate, between the straight tube lengths la, 1b. As shown, fat fins 14 are located between adjacent cut-out fins 11, 15 which cut-out fins project alternately from opposite faces of the plate 2. The height (H, Fig. 3) of the cutout fins is greater than the height (h) to which the tube 1 projects from the plate 2. In alternative embodiments (Figs. 5, 6), different arrangements of flat fins and cut-out fins of differing heights are employed. In one embodiment (Fig. 10), in which the flat fins (29) are inclined to the plate in a direction parallel to the tube lengths, the tops of the cut-out fins (30, 31) are also inclined.
Patent GB-102434-A (GB)
Title: Improvements in Starting and Stopping Devices for Electric Motors.
Inventor: HENDERSON JAMES GRAY
IPC: H01H51/10
Filed: 1916-05-08
Abstract: 102,434. Henderson, J. G. May 8, 1916. Controllers, locking-mechanism for. - The solenoid e which operates the main switch c is connected with switches k, j in an auxiliary circuit across the mains a, b, and a further auxiliary circuit includes the electro-magnet n which operates a detent to maintain the main switch closed after the solenoid e is de-energized The switch is closed by hand, or automatically by a moving load, and completes the circuit of the solenoid e to close the switch c in the motor circuit. The electromagnet n then attracts its armature m to open the solenoid circuit at the switch k and to move the arm r beneath the core d of the solenoid to maintain the switch c in its ' on ' position.