baber/WOPTO huggingface dataset:
Patent GB-873227-A (GB)
Title: Improvements in or relating to polymeric compositions containing polyethylene
Inventor: NICHOLS GEOFFREY JOHN
IPC: C08L23/10
Filed: 1958-09-01
Abstract: A polymeric composition comprises (i) at least 80% of a low pressure polyethylene and (ii) 5%-20% of an elastomeric substance with a gel content of at least 50%.  The gel content is related to the cross-linking present in the rubber-like substance and is equivalent to the proportion of the substance insoluble in solvents for the non-cross-linked portion of the polymer.  The rubber-like substance may be natural rubber or a synthetic rubber such as polybutadiene or polyisoprene or butadiene-styrene or butadiene-acrylonitrile copolymers in which the required gel content has been produced e.g. by chemically cross-linking with divinyl benzene or by curing e.g. with sulphur, tetramethyl thiuram sulphide, a dithiocarbamate, an aromatic thiazole, guanidine or an aldehyde amine.  The polyethylene may be produced by any low-pressure process and a list of possible catalysts is given e.g. Ziegler catalysts or supported oxides of metals of subgroup V(a) and VI(a) or Group VIII.  Specifications 753,349, 784,970, 799,392, 799,823, 801,031, 826,416, 833,430 and 873,226 are referred to.
Patent GB-410499-A (GB)
Title: Improvements in or relating to electrical resonant circuit arrangements
IPC: H03H7/01
Filed: 1932-10-08
Abstract: 410,499. Impedance networks. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London, and RUST, N. M., 109, London Road, Chehnsford, Essex. Oct. 8, 1932, Nos. 28096 and 32055. [Classes 40 (iii) and 40 (v).] An unmatched filter particularly for use as an intervalve coupling in the intermediatefrequency circuit of a superheterodyne receiver comprises two or more series arms tuned to the desired frequency, the shunt arms (the inductance of which may be constituted by mutual inductance) being so tuned as to produce a sharp cut-off. Thus, the series arm comprising the condenser C3, Fig. 3 (Comp.), and the leakage inductance of the coils L1, L2, is tuned to the accepted frequency while the shunt arms, comprising the mutual inductances between the coils together with condensers Cl, C2, form acceptor arms tuned respectively to the two cut-off frequencies. Or there may be three tuned series arms (Fig. 3, Prov. 28096 /32, not shown). The input and output terminals may be connected across the condensers of the circuits which are tuned to the mean pass frequency, Fig. 9 (Comp.) and Fig. 5 (Comp., not shown;) or alternatively the two shunt arms, comprising mutual inductance and tuned to the two cut-off frequencies, may be located in separate stages of an amplifier, Fig. 8 (Comp., not shown). The shunt arms may be designed in relation to the ohmic resistance R, Fig. 3 (Prov. 32055/32) ; the impedance of each arm L2, C2, L3, C3 remains at or a little above the value of R throughout the pass range and falls off rapidly at a cut-off frequency ; or a rejector shunt arm L2, C2, Fig. 2 (Prov. 32055/32), may be tuned to the frequency at the middle of the pass band and have an impedance equal to or a little greater than R at that frequency. The shunt arms may have negative resistance as described in Specification 404,349. A circuit similar to that shown in Fig. 9 (Comp.) may be designed in relation to R in this manner, Fig. 4 (Prov. 32055/32, not shown).
Patent GB-1156803-A (GB)
Title: Improvements in or relating to Sheath Corsets and like Foundation Garments.
IPC: A41C1/00
Filed: 1966-06-23
Abstract: 1,156,803. Girdles. ETABS LEJABY. 23 June, 1966 [24 Aug., 1965], No. 28103/66. Heading A3V. A girdle comprises a body 2 of two-way stretch material with vertical edges 6, 7 secured to an inexpansible front lining panel 5 which is also secured to the body 2 along edges 5a, 5b. At the rear the body 2 is lined by an upper horizontally non- expansible panel 8 and a lower vertically non-expansible panel 11. Longitudinally extensible strips 15, 16 attached at their upper ends 19, 20 to a longitudinally extensible edging 3, cross each other over, and are secured to the panel 5 and have their lower ends attached partly to a longitudinally extensible edging 4 and partly to the side edges of the panel 11. In an alternative embodiment (not shown) the panel 11 and strips 15, 16 are formed as one piece. In a modification the strips 15, 16 are assembled at upper and lower ends to form respectively the front inexpansible panel and the rear vertically inexpansible panel 11.
Patent GB-812253-A (GB)
Title: Rolling magnesium alloy
IPC: C22F1/06
Filed: 1957-09-05
Abstract: 812,253. Making magnesium alloy sheet or foil. DOW CHEMICAL CO. Sept. 5, 1957 [Sept. 28, 1956], No. 28113/57. Classes 83 (2) and 83 (4). Rolling: working at specified temperatures.- A method of producing rolled strain hardenable magnesium base alloy sheet or foil in the recrystallized state comprises rolling a cast ingot at a temperature above its recrystallization temperature so as to reduce its thickness to between 118 and 143 per cent, preferably 125 per cent of the desired final thickness, rolling the so-reduced metal to the desired final thickness while lowering its temperature to near, e.g. 100‹ to 300‹ F. above, its minimum recrystallization temperature in a single pass, following such single pass by an immediate quenching to below its recrystallization temperature, and then coiling the quenched metal sheet, the minimum radius of the coil so produced being not less than fifty times the thickness of the rolled sheet. The cast ingot is subjected to a solution heat treatment by soaking in a furnace at 850‹ F. for about 10 to 20 hours, the ingot being held at 850‹ F. for at least 4 to 6 hours. In the first rolling the number of hot passes varies according to the initial thickness of the ingot and the ultimate thickness desired and if coilirg is necessary before the final pass the hot rolled metal is coiled while hot, uncoiled hot, and thereafter mediately quenched in air or water, air dried and then coiled on a mandrel. Articles drawn or formed from the coiled sheet exhibit a smooth surface free from twinning or sporadic grain growth. In an example a scalped cast magnesium-base ingot 12 inches thick, 40 inches wide and 76 inches long is solution heat treated at 850‹ F. to 900‹ F. for 16 hours and hot rolled in several passes, the final pass reducing the sheet thickness to 0.088 inch and its temperature to between 280‹ and 350‹ F. The cooled and rolled sheet is quenched in water to below 260‹ F. and coiled. The uncoiled length of the sheet is about 700 feet.
Patent GB-1071396-A (GB)
Title: Improvements in the rearing of piglets
IPC: A01K1/035
Filed: 1964-07-08
Abstract: 1,071,396. Rearing piglets; feeding appliances. H. BIEHL. July 8, 1964 July 24, 1963], No. 28144/64. Addition to [july 24, Heading AIM. Piglets reared in cages by the method claimed in Specification 1,054,821 are fed by means of a common feed trough extending through the cages and which is charged at predetermined times with a liquid or semi-liquid feed which flows along the trough to the piglets in the individual cages. The cages are arranged in a series of sets 3-5, the sets being offset vertically and a trough 6 formed of joined sections extends through the cages at a downward inclination. The trough is charged with feed from a storage container 7 and flows through the trough under gravity, any unused feed being collected in container 8 and returned to container 7 by a pump 10 In a modification means are provided for mixing the feed from basic ingredients and supplying it to the storage container.
Patent GB-776558-A (GB)
Title: Improvements in or relating to mercury switches
IPC: H01H29/18
Filed: 1954-09-30
Abstract: 776,558. Mercury switches. JONES, D. G. Sept. 28, 1955 [Sept. 30, 1954], No. 28258/54. Class 38(5) The mercury in a sealed container 1 is divided into two pools 5 by an annular insulating separator 4, the circuit between the two electrodes 3 being completed by downward movement of an insulating plunger 6 to displace the mercury over the top of the separator. The plunger comprises a cylindrical inner part 7 and an annular outer part 8 having embedded therein an annuler electrode 10 connected to a conductor 11 having an extension 12 contacting the inner pool. The electrode 10 serves to reduce the field strength in the region of the interrupting arc. The concentric mercury pools produce a magnetic field tending to extinguish the arc and this effect may be enhanced by enclosing a magnetic ring in the top rim of the separator 4. Holes for the passage of the arc gases may be provided in the plunger parts 7, 8 near the mercury surface to further facilitate the arc extinction. An iron annulus 9 on the plunger permits it to be displaced by energization of a, coil 13 or by movement of a permanent magnet. In a modification (not shown) the mercury normally completes the circuit between the electrodes 3 and the plunger is raised to interrupt the circuit.
Patent GB-1078646-A (GB)
Title: An expanding tool for use with a tubular workpiece
Inventor: PARKER GEORGE
IPC: B21D41/02
Filed: 1963-07-17
Abstract: 1,078,646. Tube expanding. STEWARTS & LLOYDS Ltd. April 29, 1964 [July 17, 1963], No. 28290/63. Heading B3J. Apparatus for expanding or improving pipe-ends 10 comprises a tapered plug 11, an expansible collet 12 to fit the pipe and having a base 18 engaged by the plug, and means 20, 21 for moving the plug to expand the pipe-end. A piston 21, connected to the plug 11 at 24, 25, is moved in one direction to expand the spring-steel collet 12 by pressure fluid supplied to the cylinder-space 40 and in the other by a return spring. 31. The collet has a flange 14 at one end and spaced longitudinal slots, Fig. 2 (not shown). The apparatus may be supplied by a hand-operated pump which may be integral with the apparatus.
Patent GB-299041-A (GB)
Title: Improvements in or relating to electrical transmission systems
IPC: H04R3/00
Filed: 1928-10-03
Abstract: 299,041. Electrical Research Products, Inc., (Assignees of Whiting, D. F.). Oct. 21, 1927, [Convention date]. Systems for transmitting music.-When the effects of several microphones are to be merged in, say, the input circuit of a common amplifier, volume control of the individual microphones is given by potentiometers which are so designed that the total impedance as seen from the a:nplifier remains approximately constant at all adjustments. Each potentiometer consists of a pair of resistances 30, 31 and a slider 36, and the arrangement is such that the total impedance of the three potentiometers in series, taking into account the shunt circuits through the secondaries of the microphone transformers 47, 48, 49, remains approximately constant and equal to the impedance of the primary of the amplifier transformer 65. A numerical example is given. Exact constancy can be obtained if the. resistances are tapered instead of uniform. A microphone 41 can be cut out by a switch 50, which replaces the secondary of transformer 47 by an equal impedance 20 and opens the feed circuit 61, 58. The microphones may be replaced by condenser telephones with individual amplifiers.
Patent GB-706328-A (GB)
Title: Improvements in or relating to hydraulic control valves
Inventor: EDGE STANLEY HOWARD
IPC: F15B1/027
Filed: 1950-11-21
Abstract: 706,328. Hydraulic accumulators. CLAYTON DEWANDRE CO., Ltd. Nov. 21, 1951 [Nov. 21, 1950], No. 28433/50. Class 69 (2) The invention consists of an automatic valve device applicable to a hydraulic power system of the kind in which continuously-pumped liquid in a hydraulic circuit operates a servo or like mechanism included in the circuit and in which a hydraulic accumulator charged by the pump operates the mechanism when the pump fails or runs too slowly, the valve device maintaining the accumulator pressure between predetermined limits by interrupting the flow from the pump to the accumulator when the upper limit is reached and re-establishing the flow when the lower limit is reached. The valve device comprises a casing 1, Fig. 1, having a pump inlet 2 and outlets 3, 4 for connection to a hydraulic accumulator and a power output device respectively, a valve member 7 between the inlet 2 and outlet 3, and capable of opening under pump pressure to permit accumulator charging, and a valve member 13 which opens to let hydraulic liquid into the output circuit when the pump pressure exceeds the loading of a spring 14, the drop in pressure in the system resulting from the opening of the valve member 13 permitting closure of the valve member 7 by the pressure obtaining in the accumulator acting through radial passages 7a. There is also provided a piston 10 formed with a rod 19 which can engage the face of the valve member 13 and is operated by accumulator pressure acting on its rear face to hold the valve member 13 open, until the accumulator pressure drops (by use of the liquid in it) below the loading of the spring 14, whereupon the valve member 13 is closed by the spring to permit re-charging of the accumulator. The device is characterized by a screw-threaded end-cap 16 for adjusting the loading of the spring 14 so as to vary the predetermined pressure limits at which the accumulator charging operation is cut in and cut out. When the accumulator is empty, valve member 7 is opened by pump pressure, Fig. 1, until the pressure in the inlet passage 5 is high enough to open valve member 13. This corresponds to the upper accumulator pressure limit. The resulting pressure drop in the passage 5 permits the accumulator pressure to close the valve member 7, this pressure also acting through a passage 18 on the rear of the piston 10 to keep valve member 13 open, Fig. 2. When the accumulator pressure falls to its lower limit the piston 10 yields under pressure of spring 14, valve member 13 closes, and the inlet passage pressure rises until valve member 7 opens again to permit re-charging of the accumulator.
Patent GB-456474-A (GB)
Title: Improvements in apparatus for tempering coiled springs
IPC: C21D9/02
Filed: 1935-10-15
Abstract: 456,474. Heating articles by passage of current. DAVIS, J. M., and PULLMAN SPRING-FILLED CO., Ltd., North Circular Road, Cricklewood, London. Oct. 15, 1935, No. 28463. [Class 39 (iii)] Coiled springs are tempered by heating them by passage of current therethrough while compressed between electrodes. The springs are ejected from the machine to a trough formed by plates 1, 2 which are oscillated to feed the springs alternately to troughs formed by plates 6, 7 and 8, 9. While on these latter troughs the springs are compressed between movable copper faced electrodes 10 after which some of the plates 6 ... 9 are moved to release the springs, which drop on to a shoot 17 from which they are passed to cooling apparatus by an endless conveyer.
Patent GB-1345405-A (GB)
Title: Signal converter apparatus
IPC: H03K7/08
Filed: 1971-06-17
Abstract: 1345405 Analogue/digital converters HEWLETT-PACKARD CO 17 June 1971 [20 July 1970] 28494/71 Heading G4H Each time the output of an integrator 15 (Fig. 1), receiving at its input an unknown current i 1  proportional to an unknown analogue voltage V IN , exceeds a preset negative or positive threshold level, the output of either positive input logic 19 or negative logic input 27 goes to a high level at the next clock pulse from a time base to (1) enable a gate 33 to transmit an output pulse from the time base via a gate 33 and (2) to apply a negative or positive reference current to the integrator to reduce the absolute value of its output. At the first clock pulse after the integrator output has dropped below its threshold level, the reference source is cut off. This process is carried on for a time interval defined by a predetermined number of pulses N from the time base, the ratio of the number of output pulses N1 transmitted through the gate 33 to the predetermined number of pulses N representing the analogue voltage. Errors due to variations in the clock pulse period are thus avoided.
Patent GB-228984-A (GB)
Title: Improvements in picture rails and the like and in hooks for use therewith
IPC: A47G1/16
Filed: 1923-11-12
Abstract: 228,984. Jones, H. C., and Inwards, E. D. Nov. 12, 1923. Mouldings. - A picture rail provided with a hook-retaining groove in its rear face has the upper portion a<1> overhanging the lower portion a<3>, so that the latter is spaced from the wall to allow insertion of the hook from below. The groove may be obliquely arranged, or shaped otherwise than as shown, and the rail may be constructed of two or more pieces. In a modification, the rear face may be flush and clearance. between the rail and wall obtained by a packing- out strip or blocks, or gaps may be formed in the lower portion of the rail through which the hooks may be inserted. In a further modification, the upper portion may be set back from the lower portion. The rail may be in the form of a plaque rail or cornice moulding.
Patent GB-989737-A (GB)
Title: Bowling pinsetting machine
IPC: A63D5/08
Filed: 1961-08-08
Abstract: 989,737. Bowling alleys. BOWL-MOR CO. Inc. Aug. 8, 1961 [April 10, 1961], No. 25559/61. Heading A6D.  An alley A for playing nine-pin bowling (in which only one ball per frame is bowled) comprises a sweeper S which, after each frame,  transfers pins P and balls from the deck A1 on to a continuously rotating turntable in the pit 11, from whence the pins and balls are separately distributed to pin elevator E1 and a ball elevator respectively, the balls being returned from the latter to the bowler along track BR. The pins are lifted on their sides in the elevator E1 and are delivered from thence to a pin reservoir R extending horizontally and transversely across the rear end of the alley, means being provided for ejecting from the elevator those pins which have their heads pointing towards the playing deck, and for turning them during their fall back to the pit 11 so that when next picked up by the elevator, their butt ends face towards the deck of the alley. When the pin reservoir R is full, the pin elevator is stopped automatically and the pins are pushed out of the reservoir R by an ejector bar, on to nine downwardly inclined channels 112 having conveyor belts 113 therein, the belts delivering the pins to vertical positioning tubes T mounted on the pinsetter platform 125. The pinsetter platform is then lowered to the deck A1 and the pins are released therefrom, ball-bearings in the bottoms of the pins engaging countersunk holes in the pin deck. Whilst being lowered on to the pin deck, the pins are held in the open-ended tubes T by means of fingers 165 which form part of a framework 160 slidably mounted on the platform 125, and which project into slots in the lower ends of the tubes. Catch means are provided for holding the frame 160 in its pinengaging position against the action of springs, the catch means being automatically released when the pinsetter platform reaches the playing deck, and being automatically re-set as the pinsetter returns towards the pin reservoir. The various sweeping and pinsetting components of the alley are all driven by electric motors, the sweeping and pinsetting cycle being fully automatic once initiated from a push-button switch at the approach end of the bowling alley.
Patent GB-315634-A (GB)
Title: Improvements in or relating to bathing sandals
IPC: A43B5/08
Filed: 1928-10-05
Abstract: 315,634. Auster, L. Oct. 5, 1928. Sandals; slippers. -A rubber or like bathing sandal comprising a sole 9, toe straps 11, 12, instep straps 13, and heel piece and ankle straps 16, 18 is moulded in one piece with all its parts in a flat condition, as shown. This facilitates packing, &c. The ankle straps are preferably moulded in one piece, and afterwards divided along the line 22, and the instep straps may also be formed as a continuous piece, and then cut. In a modification, the sole is moulded with an upstanding marginal flange from which the attaching straps spring. In another modification, the straps 13, 18 are moulded in the flat condition, but extended laterally of the sole portion.
Patent GB-243168-A (GB)
Title: Improvements in or relating to engine-mountings for aircraft
IPC: B64D27/06
Filed: 1924-11-29
Abstract: 243,168. Supermarine Aviation Works, Ltd., and Mitchell, R. J. Nov. 29, 1924. Propelling.-An engine is detachably mounted outside the hull or fuselage of a flying boat or like aircraft by means of a pyramidal frame detachably secured at its apex to the aircraft and braced by two additional strut members which may be adjustable in length. The Figure shows in plan two engine bearers 13, 14 connected togethe'd and supported on four downwardly convergent struts 15 - - 18 secured by a pin joint at 19 to the front spar of the lower wing of a biplane. A longitudinally disposed V-shaped bracing member 21, 22 connects the end of the pyramidal frame to the rear spar of the wing at 23, and a similar member 25, 26 connects the side of the frame to the front spar at 27. The members 21, 22, 25, 26 may be variable in length to adjust the alignment of the engine.
Patent GB-1069875-A (GB)
Title: Improvements in or relating to piston rings
Inventor: TOMMIS NORMAN
IPC: F16J9/26
Filed: 1963-07-19
Abstract: 1,069,875. Producing metal articles. HEPWORTH & GRANDAGE Ltd. July 3, 1964 [July 19, 1963], No. 28701/63. Addition to 924,016. Heading B3A. [Also in Division F2] A cast iron or steel piston-ring (1) has one or more circumferential grooves in its outer peripheral surface filled with a wear-resistant material defined as a ceramic material, sprayed metal coatings composed of complex alloy particles of nickel, chromium and boron contained in a metal matrix which is softer and more ductile than the complex alloy particles, or complex wear-resisting carbides contained in such a matrix. The ceramic material may be an oxide, carbide, nitride or boride of aluminium or zirconium, boron nitride or mixtures thereof. The metal matrix may be nickel, chromium or an iron alloy. After preparation of the peripheral surface which may include chemical cleaning, shot-blasting and precoating, for example with molybdenum, a layer of wear-resisting material as defined above is sprayed on to the surface and the excess is removed by grinding, milling, turning or other mechanical means to leave one or more layers (4, Fig. 3) of the wear-resisting material between bands (5) of cast iron or steel.
Patent GB-1401053-A (GB)
Title: Display stands
IPC: A47F5/10
Filed: 1972-06-20
Abstract: 1401053 Display stands COLGATEPALMOLIVE CO 20 June 1972 [26 June 1971] 28771/72 Heading A4H A display stand comprises hollow box-like elements 1, 1', 1" stacked one upon another, the top and bottom surface of each element being a square, and each element having a cut-out in at least one of its side walls, the elements being connected by screws through aligned holes (9 and 10-13) in the top and bottom surfaces. As shown, the cut-out comprises nearly all of one side wall and about half of the neighbouring side walls. Element 1' is rotated by 90 degrees relative to elements 1 and 1", and element 1" rests on a base element 2. A peripheral rim (7) on the top or bottom surface of each element receives a flange (8) on the bottom or top surface of an adjacent element. The elements comprise plastics.