baber/WOPTO huggingface dataset:
Patent GB-1400306-A (GB)
Title: Information transmission systems
IPC: H04L25/493
Filed: 1973-01-29
Abstract: 1400306 Multiplex pulse code signalling SIEMENS AG 29 Jan 1973 [9 Feb 1972] 4360/73 Addition to 1306626 Heading H4L The t.d.m. system of the parent Specification 1,306,626 is modified to prevent faulty decoding due to the start pulse of a code sequence being distorted in the transmission link. In the prior arrangement, binary coded signals N1, Fig. 1(b), are scanned by pulses T, Fig. 1(a) and coded pulses G1, G2 &c., Figs. 1(c) are transmitted at intervals S represented by longer pulses and represent a count of the pulses T occurring between a pulse S<SP>1</SP> and a subsequent change in state of the signal N1 before the next pulse S. In each pulse group G1 &c., the start pulse ST denotes the new polarity of the signal N1, the next three pulses represent the count and the pulses between pulse groups represent the prevailing polarity. As modified, Fig. 1(d), the start pulse ST is followed by safety elements P1, P2, of the same polarity, the presence of a start signal being determined by a majority decision between elements ST, P1, P2. In modifications, Fig. 1(e) three safety elements P1, P2, P3 are included and the code Gl, &c. is restricted to two elements, and Fig. 1(f) four safety elements are used with a one-bit code G1, &c. In the latter arrangement P2 is inverted. In a decoder for signals (d) the signals from a demultiplexer DM are supplied to a six-position shift register SR. The polarity of pulse ST is compared at V with the polarity of the preceding start pulse stored at SP and if they differ (as they should) a signal a is supplied via gate G2 to enable AND gates G3, G4 in the decision circuit E. Elements P1, P2 are supplied to gates G3, G4 respectively and a pulse appears at output D of OR gate G5 when one or both of the elements P1, P2 corresponds in polarity to that of the start element ST. The polarity of pulse ST is supplied via gate G1 to be stored at SP for the next comparison and at the same time the pulse from output D via counter Z and gate G2 blocks the decision circuit E for the duration of six elements. The pulse from D also opens gates G6, G7, G8 so that pulse group B1, B2, B3 is passed to a decoder DC which provides at its output the corresponding binary data N1. A modified decision circuit for the coding of Fig. 1(e) is described, Fig. 3 (not shown).
Patent GB-695313-A (GB)
Title: Improved process for the production of unsaturated ketones
Inventor: LACEY RICHARD NORMAN
IPC: C07C45/67
Filed: 1951-02-23
Abstract: Ketones of the formula R1.CH=CR2.CHR3.CH2.CO.CH2.R4 (R1-R4=hydrogen or C1-C4 alkyl) are obtained by pyrolyzing esters <FORM:0695313/IV (b)/1> in the vapour phase at 300-600 DEG  C.  The esters may be formed previously or in situ by reacting the alkenol R3.CH=CR2.CHR1.OH with an alkyl acylacetate or (when R4=H) with diketene in the presence of an alkaline catalyst such as a tertiary amine.  Preferably the pyrolysis mixture contains an excess of the alkenol.  Suitable conditions for the pyrolysis are 0.5-15 seconds at 450-550 DEG  C.; the pressure may be normal or sub- or superatmospheric.  The desired ketone is separated from the products by distillation, and any unchanged ester may be recycled.  In the examples: (1) allyl acetoacetate is made from allyl alcohol, diketene and triethylamine, and pyrolysed to give allylacetone, allyl alcohol and and dehydracetic acid; extra allyl alcohol may be added to the pyrolysis mixture; (2) a mixture of methyl acetoacetate and allyl alcohol is pyrolysed, yielding allylacetone, allyl acetoacetate and methanol; (3) methallyl acetoacetate is made from methallyl alcohol, diketene and triethylamine; it is then pyrolysed to yield methallyl-acetone and methallyl alcohol; (4) crotyl alcohol is similarly converted into crotyl acetoacetate; pyrolysis of this gives 3-methyl-hex-1-en-5-one, crotyl alcohol and low-boiling products; (5) methylvinylcarbinyl acetoacetate on pyrolysis yields hept-2-en-6-one, methylvinylcarbinol and hydrocarbons, mainly butadiene.  Other suitable keto-esters are the acetoacetates of pent-1-en-3-ol, hex-2-en-4-ol, 2 - methylpent - 2 - en - 1 - ol and 3 - methyl - pent-2-en-4-ol and allyl propionoacetate.  According to the Provisional Specification the groups R may be alkyl in general and the 2-position of the acylacetic group may also be alkylated.
Patent GB-1369974-A (GB)
Title: Needle
IPC: D05B85/00
Filed: 1973-01-29
Abstract: 1369974 Needle J L GRUND 29 Jan 1973 4430/73 Heading D1G A sewing machine needle having a blade 11 pointed at 12 is provided with an eye 13 having a lateral threading slot 17 covered by an elongated member 18 secured to the blade between the eye and the point, the member 18 being arcuate in cross section at least at section 2-2 so that a thread entering at 19 between the blade and member 18 is forced into an actuate form as it is about to enter slot 17 and must assume that form again if it is to escape from the eye 13. A projection 20 on the needle engages a hole 15 in the member 18 to prevent the latter moving upwards away from the point. A hand needle embodying the invention is also disclosed (Fig. 4 not shown).
Patent GB-1204083-A (GB)
Title: Threshing mechanism
Inventor: FEIFFER PETER
IPC: A01F12/20
Filed: 1969-01-27
Abstract: 1,204,083. Combine harvester. WISSENSCHAFTLICH-TECHNISCHES ZENTRUM FUR LANDTECHNIK SCHLIEBEN. 27 Jan., 1969, No. 4453/69. Heading A1F. A threshing mechanism comprises a rotating drum 10 with beater arms capped with a resilient material 8, a concave wall 1, segments 4 made of a resilient material which may be hollow and filled with foam or sponge rubber and tapering towards the end where they are attached to mounts 2 which form a unit with a wire grid portion 3 of the wall 1. The segments 4 are capable of yielding (dotted lines) to provide for variations in rate of flow, condition or type of crop.
Patent GB-1418401-A (GB)
Title: Grinding machine
IPC: B23Q15/00
Filed: 1973-01-30
Abstract: 1418401 Grinding CINCINNATI MILACRON-HEALD CORP 30 Jan 1973 [31 Jan 1972] 4512/75 Heading B3D A grinding machine comprises a workhead 14 having means for holding a workpiece 13 mounted on a base A, a wheelhead 25 having a rotatable abrasive wheel 27 mounted on the base, a dresser 11 for dressing the wheel on occasion, means 18, 32 bringing about relative longitudinal and transverse movement between the wheelhead and workhead, means making a determination of stock removal having apparatus for measuring a time interval starting at a point in the movement between the wheelhead and workhead and a device 24 for measurthe progress of the wheel through the workpiece, and means bringing about a dressing operation if the stock removed is below a predetermined amount during a pre-set time interval. A workhead table 15 is reciprocatable along guideways 16, 17 on the base A by an hydraulic motor 18 and carries the workhead 14 for holding the workpiece 12 which is rotated by a motor 20. The table 15 also carries the dresser 11. A wheelhead table 40 is reciprocatable along guideways 30, 31 by an hydraulic motor 32 and carries the wheelhead 25 which has a spindle 26 carrying a grinding wheel 27. A horn 39 projects from the table 40 and co-operates with a notch 41 formed in a compensation slide 35 movable by a stepping motor 36. The front of the slide contacts a shaft 46 engaged with a nut on the underside of the table 40, the shaft being rotatable by a feed stepping motor. A pneumatic gauge 24 is connected to a control 28 and produces a signal which is converted into an electrical voltage by moving a centre tap along a potentiometer. A control circuit is described and includes a number of transistors, pulse generators, switches, a timer, and a memory circuit which holds an indication of the workpiece size at the beginning of a time interval during a grinding operation for comparing it with the size at the end of the interval. If the amount of material removal during that time interval is greater than a predetermined reference, the grinding wheel is still sharp and grinding continues. If the amount is less, indicating that the wheel is dull, the circuit initiates a dressing operation. Reference has been directed by the Comptroller to Specification 1,105,972.
Patent GB-1174945-A (GB)
Title: Improvements in or relating to the Drying of Granular Solid Materials
IPC: F26B11/04
Filed: 1967-01-30
Abstract: 1,174,945. Drying solid granules; azeotropic distillation. SNAM PROGETTI S.p.A. 30 Jan., 1967 [31 Jan., 1966], No. 4535/67. Heading BIB. [Also in Divisions Cl and G6] Liquid is removed from wet granular solid material by mixing it with a volatile dispersing liquid which is wholly or partially immiscible with the wetting liquid, and passing the mixture continuously through inlet 1A into one end of a rotating tube 1 divided into compartments by a helical wall 10 provided with central apertures 19, the tube being heated by jacket 3 so that the wetting liquid and some of the dispersing liquid distil off and partially reflux in the first compartments and the residual dispersing liquid distils off in the subsequent compartments. The dried granular material flows out of the tube through outlet 2. The vapours of the wetting liquid, together with some of vapours of the dispersing liquid, pass from tube 1 through outlet 20 into condenser 13, the condensate being collected in receiver 14. When the wetting liquid is water, it is advantageous to use benzene or xylene as dispersing liquid. The process is applicable to drying granular hydroxides and/or oxides of metals in order to produce catalytic spherules. Spheroidal nuclear fuels can be obtained by drying oxides and/or hydroxides of thorium, uranium and plutonium.
Patent GB-175643-A (GB)
Title: Coin-freed mechanism for prepayment meters
IPC: G07F15/02
Filed: 1922-02-16
Abstract: 175,643. Landis & Gyr Akt.-Ges. Feb. 18, 1921, [Convention date]. Coin action, mechanical-connection.-In a prepayment meter, the coin is inserted in a slot in a knob which is pressed inwards against a spring and then given a half-turn to operate the mechanism and discharge the coin into a, money-box. The knob 3, Fig. 1, provided with coin slots 14 and moulded on a flanged disc 4 is pressed out of a cylindrical casing 1 by a spring 9 and prevented from rotating by a flat blade 6 which projects from a boss 5 on the disc 4 and passes through a slot in the back of the casing, it being held in position by a washer 7 and curved pin 8. The disc 4 has two openings 15, Fig. 3, two recesses 16, and two diametrically opposed notches in its flange 17, each notch having two sloping sides 18, 19 and a central stop 20. If the knob is pushed in without a coin rotation is prevented by a sliding catch 10, which is operated by cne extended end of the spring 9 entering an opening 15. When a coin is inserted, it presses back the catch 10. and the knob can now be turned owing to the co-operation of bevelled edges on the opening 15 and the catch 10, and the provision of gaps 24 in the blade 6. Afber a quarterturn, the coin commences to roll out of the slot 14 and is prevented from falling through a slot 13 in the casing by a stop 26 and then by the pressure of the end 9<1> of the spring 9, Fig. 1. When it is over the money box, the sloping side 19 of the notch in the flange 17 presses back the spring, allowing the coin to drop. If the coin is fraudulently prevented from rolling, the spring 9<1> engages the stop 20, preventing the further rotation of the knob and the actuation of the meter switch. When the switch is actuated, the catch 10 engages a recess 16, preventing backward rotation of the knob. The catch 10 could be dispensed with and another stop provided on the flange 17 for engagement by the spring 91 for preventing backward rotation,. the stop 20 preventing full forward rotation.
Patent GB-588507-A (GB)
Title: Improvements in or relating to automatic release-links for parachute-borne loads
IPC: B64D17/38
Filed: 1945-02-26
Abstract: 588,507. Fastenings for parachute loads. COOPER, D. W. Feb. 26, 1945, No. 4649. [Class 44] [Also in Group XXXIII] A fastening for parachute-borne loads, automatically released on alighting, comprises a chain f threaded through rings g or shackles carried by the rigging lines (not shown) of the parachute, or a number of parachutes, as described in Specification 582,800, one end (or both ends) of the chain being connected to a link device by a pin which is ejected to effect release by an explosive charge or mechanically. If desired the chain links may be formed so that the chain is flexible in one direction to form a loop as shown, but in the other cannot be flexed beyond a straight or bar-like position. As shown, both ends of the chain are releasable, but one may be permanently connected if desired. The chain ends are attached by pins h to a link device comprising parallel plates a connected by bolts b and spaced by blocks c, the lower block having a swivel-eye c<1> for the shank d of a shackle e to which the load is attached. The pins h have hollow cylindrical heads h<1> to which explosive charges i are secured, and the heads may slidably enclose fixed cylindrical members k to confine the explosive gases until the pins are sufficiently ejected. The pins may be held against accidental release by shear wires j, and against loss by flexible connections l. Firing is effected electrically over leads m and contact-rings n. The circuit may be closed by a pendulum controlled or impact switch, or in the case of alighting on water current may be supplied by a water-actuated cell or battery controlled by immersion switch. Alternatively ejection of the pin (or pins) may be mechanical and an arrangement is described using a bellcrank lever, one arm of which engages under the pin-head, the other arm being actuated by a pendulum or impact device.
Patent GB-556716-A (GB)
Title: Improvements in and relating to diamond tools
IPC: B24D18/00
Filed: 1942-04-10
Abstract: 556,716. Moulding diamond tools. MOPPES, L. E. VAN, MOPPES, E. M. VAN, GODKIN, R., and SMITH, N. R. April 10, 1942, Nos. 4762 and 13283. [Class 87 (ii)] [Also in Group XXIII] A method of making a diamond tool comprises subjecting a mass of powdered metal or alloy surrounding the shank of the diamond to a compacting pressure and then introducing molten brazing metal or alloy into the interstices while at a temperature sufficient to melt the brazing metal ; the brazing metal in powdered form may be intermixed with the powdered metal, and a diamond wheel may be similarly made by substituting powdered diamonds for the diamond. The metal powder may consist of iron and the brazing metal spelter or copper. The iron may be coated with copper or silver chemically or electrolytically ; the shank of the diamond may also be coated. As shown in Fig. 1, the diamond 1 has its point in a recessed block 2 in the lower end of a mould 4 in which iron powder 5 is compacted by a plunger 6. The compressed iron is then placed in a two-part carbon mould 7, 8, Fig. 2, to which the brazing metal in the form of a rod 9 is fed while the mould is heated in an oxygen-free temperature. The pressure may be 500-1,000 lbs. per square inch and the temperature 1960‹ F.
Patent GB-1020803-A (GB)
Title: Novel androstane compounds and means for producing the same
Inventor: PALMER PETER JOHN
IPC: C07J75/00
Filed: 1964-02-04
Abstract: The invention comprises compounds of the formula <FORM:1020803/C2/1> where R represents hydrogen or an alkanoyl group of not more than four carbon atoms, and the preparation thereof when R is alkanoyl by treating a compound of the formula <FORM:1020803/C2/2> wherein acyl represents the above alkanoyl group with thionyl chloride.  Compounds of the invention where R is hydrogen may be produced by the alkaline hydrolysis of the novel compounds where R is an alkanoyl group of not more than four carbon atoms.  17a  - methyl - 17b  - acetoxy - 5a  - hydroxy cyclo propano - [2a ,3a ] - androstan - 4 - one is prepared by reacting hydrazine hydrate with 2-methylene - 17a  - methyl - 17b - hydroxyandrost - 4 - en - 3 - one to form 17a  - methyl-cyclopropano - [2a ,3a ] - androst - 4 - en - 17b  - ol, acetylating this compound to form the corresponding 17-acetate, treating the acetate with osmium tetroxide and then hydrogen sulphide and oxidizing the resulting 17a -methyl-17b -acetoxy - 4a ,5a  - dihydroxy - cyclopropano-[2a ,3a ]-androstane with chromic acid.
Patent GB-1465471-A (GB)
Title: Resilient padded items
IPC: B29C44/14
Filed: 1973-01-31
Abstract: 1465471 Cushions STOREY BROS. & CO Ltd 30 Jan 1974 [31 Jan 1973] 4929/73 Heading A4H [Also in Division B5] A moulded cushion has a top panel 10 of a nylon fabric/p.v.c. laminate and a polyurethane foam filling 36. A skirt 40 formed from plastics sheeting is attached by stitching to the panel 10 and has a free lower edge for use in securing the cushion to a suitable rigid base. Piping 44 is incorporated during stitching. In an alternative construction, (not shown) the skirt is welded to the top panel before the foam filling is moulded on to the panel, and the skirt in this case is made from leather cloth.
Patent GB-681351-A (GB)
Title: Improvements in or relating to presses particularly book-binding presses
IPC: B42C13/00
Filed: 1949-02-24
Abstract: 681,351. Bookbinding press. THOMPSON & CO., Ltd., R. D. H., and THOMPSON, J. E. May 23, 1950. [Feb. 24, 1949] No. 5061/49. Class 16. [Also in Group V] A bookbinding press comprises a framework, upper and lower platens, the upper platen at least being movable, and means to raise and lower the movable platen including a screw coacting with a rotatable but non- translatable nut driven from an electric or other motor by chain-sprocket mechanism through the intermediary of a slipping clutch. The framework comprises a base 11, on which rests the fixed lower platen 16, uprights 12 supporting an upper frame 13 and diagonal members 14 extending inwardly from the four corners to bear against a central disc plate 15. The upper platen 17 on a screw 29 carries arms 18 on which are journaled idlers 19 which bear against the uprights 12 so as to prevent undue inward bowing of the uprights. The actuating mechanism for the platen 17 is supported on the frame 13 and disc plate 15 by pairs of frame members 20 supporting top cross beams 21 which carry an upper bearing race 22 housed in a block 23, the plate 15 carrying a lower bearing race 25 in a housing 24. Between the bearings is journaled a tube 26 in which is fitted the nut 27 held by screws 28, the screw 29 moving in the nut 27, and thrust races 30, 31 either side of the tube 26 take the load as power is applied to the work and the weight of the mechanism respectively. The tube 26 can be driven from an electric motor 50 by a chain 49 and sprocket 36 or can be operated by hand from a capstan 33, steel clutch rings 34, 35 fitting in grooves in the capstan 33 and wheel 36 respectively and being spaced by a ring 37 and washers 38, 39, the wheel 36 being supported so that no load is applied to clutch rings 34, 35, 37 by a coiled spring 45 between the capstan 33 and a ball race 46 secured to the wheel 36. The wheel 36 runs on spaced ball-races 40, 41 secured to a plate 43 and free to slide on tube 26 and drive to the tube 26 and screw 29 is imparted by depressing the wheel 36 against the spring 45 to engage the clutch rings 34, 35, 37. Movement of the wheel 36 up or down is effected from a handle 55 secured to a pair of arms 53 pivoted at 52 to plates 51 fixed to one cross-member 21, a disc 57 being carried by pivot blocks 58 in the arms 53 and bearing by means of a thrust race 56 on the plate 43. Between the handle 55 and a fixed part of the frame, an adjustable spring balance may be set to govern the pressure applied to the clutch rings so that increased pressure will cause the clutch to slip. In a modification the lower platen is also movable and is actuated to raise the platen to a predetermined height, depending on the thickness of the work, by a hydraulic cylinder, the upper platen then being actuated. The drive to the screw for the upper platen is controlled by a spring, in place of handle 55, pre-set to apply sufficient pressure to engage a single clutch ring between the capstan 33 and sprocket wheel 36.
Patent GB-1389201-A (GB)
Title: Method of making articles of clothing comprising elasticated portions
IPC: A41D27/02
Filed: 1971-02-22
Abstract: 1389201 Reinforcing edges; elastic textile laminates IMPERIAL CHEMICAL INDUSTRIES Ltd 22 Feb 1972 [22 Feb 1971] 5099/71 Headings B5K and B5N [Also in Division D1] In the manufacture of clothing, an elastic non-textile tape or sheet element is heat-bonded to a relatively inelastic textile element over at least 1% (preferably at least 10%), but not the whole of the juxtaposed area (at least one of the elements being adhesive on activation by heat), whilst the elastic element is extended from its relaxed state, the bonding zone(s) being totally confined within the bounds of the tape or sheet. The elastic element may be a natural or synthetic elastomer and may be foamed, e.g. a neoprene rubber, polyvinyl chloride, polyethylene, polyurethane or polyester foam; the foam may be open- or closed-cell and may be compressed or skeletal. The inelastic element may be a woven, knitted or non-woven textile; in examples a bonded non-woven fabric of bicomponent polyamide fibres and a woven cotton fabric are used. Prior to the bonding operation, the elastic element may be extended by at least 25% along one or more axes and heat-set in that condition; following or during bonding it may be relaxed to its original condition. A thermoplastic elastic element, e.g. thermoplastic polyurethane, may be bonded to thermoplastic fibres, e.g. polyamide, polyolefin, polyester, or non-thermoplastic fibres, e.g. cotton, wool, while a non-thermoplastic elastic element, e.g. natural rubber, may be bonded to thermoplastic fibres. Bonding may occur along continuous or discontinuous lines or along peripheral seams, or in discrete spaced zones, and may be performed by calender rollers, by dielectric heating, or by platen press, pressing rollers and plates being patterned. Dielectric heating is suitable when using polyesters, polyamides, neoprene rubber, polyvinyl chloride or certain filled or plasticized polyethylenes. The method may be used to produce waistbands, cuffs, sock tops, brassieres, girdles and smock waists. The two elements may only partially overlap.
Patent GB-1423076-A (GB)
Title: Temperature regulating devices
IPC: G05D23/24
Filed: 1974-02-04
Abstract: 1423076 Automatic control of temperature K ARITA 4 Feb 1974 [5 Feb 1973] 05106/74 Heading G3R [Also in Division H5] A temperature regulating device for a heating element 12, connected in series with a thyristor 11 to an A.C. supply 9, 10, comprises an electrically-conducting layer 21 which has a steep N.T.C. characteristic and is interposed between the element 12 and a further electrical conductor 18 which extends along element 12. The variation of the resistance between element 12 and conductor 18 is used to determine the period of conductivity of a gate controlled element, e.g. transistor 14, and hence that of thyristor 11 during the times that positive half-cycles are applied thereto. The device may be used in an electric blanket. When terminal 10 is positive capacitors 19 and 16 charge up. Immediately after switching on the supply element 12 is cold so that the resistance of layer 21 is high and when terminal 9 is positive capacitor 16 can discharge only slowly through layer 21 and the base-emitter circuit of transistor 14. Accordingly at such times capacitor 19 biases the base electrode of transistor 14 negative so that it does not conduct and so thyristor 11 does conduct. When element 12 has heated up, the resistance of layer 21 is low, capacitor 16 can discharge relatively quickly thus rendering transistor 14 conductive and thyristor 11 non-conductive. The operating temperature is set by varying the value of a resistor 20. Transistor 14 may be replaced by a small capacity thyristor.