baber/WOPTO huggingface dataset:
Patent GB-655532-A (GB)
Title: Improvements in or relating to the production of seamless steel tubes
IPC: B21B23/00
Filed: 1948-12-01
Abstract: 655,532. Making seamless tubes. WELLMAN SMITH OWEN ENGINEERING CORPORATION, Ltd., and BROOKS, C. Dec. 1, 1948, No. 31168. [Classes 83 (ii) and 83 (iv)] In a method of producing seamless steel tubes, a cast or rolled billet is placed in a hollow container of a piercing press. and is pierced by means of a punch which has a diameter greater than that of the mandrel employed in the push bench apparatus or continuous seamless tube mill, the bottle thus formed, before having the mandrel applied to it, is subjected to a rolling operation which reduces its internal diameter to, or approximately to, the diameter of the mandrel, and the bottle, after having the mandrel applied to it, is passed through the ring or roller dies or grooved rolls of the push bench apparatus or seamless tube mill. Apparatus for carrying out the above method comprises a piercing press 1, a skew roll mill 10 constructed to reduce the internal diameter of the bottle to, or approximately to, the diameter of the mandrel 40 of a push bench apparatus 38 or a continuous seamless tube mill, Fig. 2 (not shown). Billet-piercing.-The piercing press 1 comprises a hollow container 2 into which the billet is placed, 'the billet being pierced by means of a hydraulically-operated punch 3 of greater diameter than that of the mandrel 40 and the bottle 12 thus formed is ejected by means of a hydraulically-operated pusher 5. Rolling.-The skew roll mill 10 comprises inclined driven rolls 11 arranged so that when the bottle 12 has placed in it a hydraulicallyoperated mandrel 13 of a diameter the same as, or slightly larger than, that of the mandrel 40 and is fed to the rolls it is closed on to the mandrel and spread out lengthwise thereon in the form of a closed-ended bottle. Separating mandrels from work.-The bottle and mandrel 13 after being passed through the mill 10 are conveyed to a mandrel extractor apparatus 22 comprising a device 29 for gripping the mandrel and a step 30 against which the bottle engages on the withdrawal of the mandrel. The device 29 is carried by a bogie 27 running on rails 28 and connected to a motor-driven endless chain 23. The extracted mandrels are conveyed back to the front of the mill 10 for re-use. The push bench apparatus comprises similar mandrel extractor apparatus 50. Cupping.-The bottle after having the mandrel 13 extracted therefrom is conveyed to a table 36 of the push bench apparatus 38 comprising a mandrel 40 which is fed forward to the bottle which is then pushed through a series of dies 37 to form a tube. A table 45 conveys the tube to a polishing or reeling apparatus 46 which loosens the tube on its mandrel 40. The tube is then conveyed to the mandrel extractor apparatus 50. The extracted mandrels are conveyed back through a furnace 53 to the front of the table 36 for reuse. The tube freed from the mandrel passes to hot saw and finishing apparatus 57. When the push bench apparatus is replaced by a continuous seamless tube mill, Fig. 2 (not shown), the dies 37 are replaced by grooved rolls.
Patent GB-1312843-A (GB)
Title: Crosshead arrangement for the drive mechanism of highpressure compressors and pumps
IPC: F04B35/01
Filed: 1970-06-26
Abstract: 1312843 Crossheads MASCHINENFABRIK BURCKHARDT AG 26 June 1970 [4 July 1969] 31180/70 Heading F2T A compressor or pump comprises first and second opposed pistons or plungers 13, 13<SP>1</SP> driven by a crosshead which is formed by a lower part 2 provided with main and secondary sliding shoes 3, 4, an upper part 1 releasably connected to the lower part and a crosshead pin member 5 arranged between the lower and upper parts in the region of the main shoe and releasably connected, as by a coupling 14, to the first piston. The crosshead is driven along guideways 22 by a crank-pin 18 and connecting-rod 16 having a forked end for attachment to the pin block 5; alternatively two connecting-rods may be provided one each side of the pin block. The second piston 13<SP>1</SP> is releasably connected to a plain block 8 by a coupling 14<SP>1</SP>; if desired, the plain block 8 may be omitted and the upper part 1 mounted directly on the lower part 2. Long bolts 10 hold the parts of the crosshead together.
Patent GB-1466915-A (GB)
Title: Magnetic record reading circuitry
IPC: H03M5/00
Filed: 1974-07-15
Abstract: 1466915 Data storage systems HONEYWELL INFORMATION SYSTEMS Inc 15 July 1974 [19 July 1973] 31186/74 Heading G4C A circuit for retiming data pulses read from a magnetic record includes means for defining timing periods which are synchronized with the nominal positions of data bit cells containing the pulses and each of which encompasses a nominally fixed point at which the respective pulse occurs. A bi-stable is provided in respect of each fixed point. It is set in response to a data pulse occurring within the corresponding timing period and is reset at the end of the period. The resetting of the bi-stable results in the generation of a retimed data pulse. If the data is recorded such that there is a flux reversal at the centre of a bit cell of one state and at the start of the second of two adjacent cells of the other state, i.e. such that there are two fixed points, two bi-stables are required, as shown at 58, 64, Fig. 2. For a binary data sequence as at the top of Fig. 3 the read head output will be as B. The broken line portions of Fig. 3 illustrate the operation when the flux reversals are displaced from the nominal positions. Circuits, not described, produce data pulse train C, in which there is a pulse at each peak in B, and from C two timing pulse trains D, E which define the timing periods. Bi-stable 38 produces complementary timing pulse trains F and G from D. Pulses C are delayed at 40 by the amount necessary to bring them to the nominal centres of pulses F. The resulting pulses H pass via AND gate 50, when enabled by J, to cause bi-stable 58 to assume the state of the signal F on its D input. The output I of the bi-stable 58 goes high if a 1-bit is being read, i.e. if pulse 26 is nominally at the centre of its bit cell. The periods t 1 -t 2  and t 3 -t 4  are the switching times of the bi-stable. Signal I is ANDed at 66 with G and E so that O goes high, representing a retimed pulse, at the end of a timing period defined by E. Signal I is also ANDed with G and E at 68, the resulting pulse 74 causing bistable 58 to assume the state of F, now low, on its D input and therefore pulses 70, 74 to end. The other bi-stable 64 responds similarly but only in respect of flux reversals nominally at the start of a bit cell.
Patent GB-754524-A (GB)
Title: Esters of alpha-(2, 4-dichlorophenoxy) propionic acid
IPC: A01N39/02
Filed: 1954-10-28
Abstract: The invention comprises esters of alpha-(2 : 4-dichlorophenoxy) propionic acid of the formula <FORM:0754524/IV(a)/1> wherein Z is ethylene or propylene, n is 1-3, and R is alkyl of 1-4 carbons, and a process for preparing them by the action of alpha-(2 : 4)-dichlorophenoxyacetic acid or a glycol or polyglycol monoalkyl ether R(OZ)nOH.  In examples the following esters of the above-described acid are described: butoxypropoxypropyl-, 2-ethoxyethyl-, 2-2-(methoxyethoxy)-ethyl-, propylene glycol butyl-ether-, 1-butoxy-2-propyl, and 1-(2-isopropoxyethoxy)-2-propyl-; the products are used to control the growth of oak and maple without damaging poplars in plantations.ALSO:The invention comprises esters of alpha (2 : 4 dichlorophenoxy) propionic acid of the formula wherein Z is ethylene or propylene, n is 1-3, and R is alkyl of 1-4 C atoms, and a process for preparing them, (see Group IV(b)).  The products, which include the butoxypropoxypropyl-, ethoxyethyl-, 2-methoxyethoxy-, polypropylene glycol butyl ether- and butoxypropylesters of the above acid may be dissolved in kerosene or <FORM:0754524/VI/1> fuel oil and sprayed on to the trunks of oak and maple saplings grown with poplar, and have a high herbicidal activity on the former trees.
Patent GB-392199-A (GB)
Title: Improvements in or relating to apparatus for producing hightension electrical current from a low-tension source
IPC: H02M7/62
Filed: 1931-11-12
Abstract: 392,199. Converting electric currents; induction coils. BROWN, S. G., 64, North Gate, Regents Park, London. Nov. 12, 1931, No. 31320. [Class 38 (ii).] In an arrangement for producing high-tension unidirectional current from a lowtension source by means of an induction coil of the type comprising a primary and a secondary winding each divided into two equal portions on separate but similar magnetic cores and with the rectifier connected between the portions of the secondary winding, two choke coils of substantially equal inductance are connected one to the output end of each portion of the secondary winding. As diagrammatically illustrated, the portions 3, 4 of the primary winding are so wound as to produce opposite polarities at corresponding ends of the cores 1, 2, the make- and-break 7 in the primary circuit is included in the connection between the portions 3, 4 of the primary winding, and a condenser 11 is connected across the output ends of the portions 5, 6 of the secondary winding. The rectifier is indicated at 8 and the choke coils, which are preferably wound on a closed magnetic circuit, are indicated at 9, 10.
Patent GB-940837-A (GB)
Title: Improvements in and relating to the determination of moisture content
Inventor: WATSON ALEXANDER
IPC: G01N22/04
Filed: 1959-09-15
Abstract: 940,837. Determining moisture content. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Dec. 15,1960 [Sept.15, 1959], No. 31429/59. Addition to 897, 956. Heading G1N. In an arrangement for measuring the moisture content of porous bodies by determining the attenuation of such a body to the passage of electromagnetic waves as described in the parent Specification, the waves are transmitted and received by means of directional antennae in the form of wave guides which may take one of the following forms: - (1) circular or rectangular section guides with plain open ends, (2) pyramidal horns fed by rectangular section guides (3) conical horns fed by rectangular or circular section guides. These may be closed by sheet dielectric or dielectric lenses to prevent the entry of foreign matter and in the latter case to modify the shape of the beam. A matching plate may be inserted between the guide and the body 'and the horn may be fitted with a tapered carboncoated padder of about 6 dB attenuation to suppress interference by reflected radiation. The horns may be fitted with a rim of polytetrafluoroethylene or may have outriggers terminated in PTFE buttons. The moisture content can be determined by reference to moisture content/ attenuation graphs for different materials. A pair of waveguides 11,12, Fig. 13, carried on supports 13 which maintain them parallel while enabling them to be projected forward a desired distance, facilitate measurement of the variation of moisture content with depth. The supports 13 comprise insulating brackets, and the sets of supports fit in a cross groove 17 in a base plate 18 in which their spacing may be adjusted. The leading ends are closed by brass spikes 22, and the slot antennae may be covered.
Patent GB-1089942-A (GB)
Title: Control system
Inventor: BULLOCK EARL RICHARD
IPC: G05B11/32
Filed: 1965-07-23
Abstract: 1,089,942. Automatic flow control. MINNESOTA MINING & MANUFACTURING CO. July 23, 1965, No. 31581/65. Heading G3R. Signals dependent on the magnitude of a variable are compared with signals representing a desired value and electrical error signals, derived periodically, are applied to a storage device from which constant current signals are derived to maintain the variable at the desired value. As described, a signal proportional to rate of fluidflow in a pipe 14 is derived by a transducer 16 and applied to a digital comparator 22. The latter, which works on a time sharing basis to separately control several variables of a process, compares the measured value with a desired value, both in digital form, and derives an error signal in the form of the number of pulses which must be added or subtracted from one signal to make it equal the other. These error pulses are then applied to a transistor converter 30 which converts them into a single constant current pulse the duration of which is indicative of the magnitude of the error, and the polarity of which is indicative of the sense of error. This pulse is then applied to a high speed resistance-capacity integrator 32 to produce a voltage corresponding to the error. The error voltages from integrator 32 are applied to an electro-chemical multielectrode solion cell type integrator 36 which, by virtue of a suitable associated resistor, produces an output current which builds up slowly to correspond with the magnitude and duration of error. The cell output is passed through currentvoltage-current converter-amplifiers which operate a valve 18 to maintain the rate of flow at the desired value. Operating current is maintained between maximum and minimum limits by a current feedback device 46. To produce a control signal dependent on the magnitude of error only, the output of digital comparator 22 is also applied to a second channel 28, similar to the other channel, but having negative feedback 60 so that the channel output is made equal to that of high speed integrator 54 which remains proportional to the error by virtue of a capacity greater than that of integrator 32. The proportional signal from channel 28 may control valve 18 if switch 42 is changed over. Alternatively the proportional signal may be added to the integral signal by closing switch 80 or 82.
Patent GB-365206-A (GB)
Title: Improvements in building constructions
IPC: E04B2/84
Filed: 1930-10-22
Abstract: 365,206. Walls ; ceilings. ROBINSON, P., Wheat Bridge Mills, Wheat Bridge Road, Chesterfield, Derbyshire. Oct. 22, 1930, No. 31662. [Class 20 (iv).] A wall or ceiling is formed of sheets of artificial boarding 4 secured to one side of spaced, triangular battens 1, sheets of expanded metal 5 being secured to the artificial boarding and covered with cement, rough-cast &c. 6. Transverse battens 2 are secured to the ends of the battens 1, and, during the construction of the wall &c., temporary battens are secured midway between the battens 1.
Patent GB-153607-A (GB)
Title: Improvements in or relating to collapsible canopies for vehicles
IPC: B60J7/08
Filed: 1920-11-10
Abstract: 153,607. Patrix, R. Nov. 10, 1919, [Convention date]. Hoods, opening tops, and weather screens.-A frame for a collapsible hood comprises at each side a plurality of pairs of arms pivotally connected at their centres and arranged in parallel planes, the ends of adjacent arms of each set being connected by a pair of curved links so that when extended the pin of one link forms a limit stop for the other link to form a rigid horizontal structure. The two bars f, f<1>, Fig. 2, of each pair are pivoted at e with a resilient washer g between them. The bars of one cross are conneoted to the bars of the next by bent links h, h<1>, k, k'. When the system is extended the links take up the position shown in Fig. 3, the ends of the bars being rounded to permit their assuming the end to end position. A channelled frame d, Fig. 1, is thus formed at each side, one of the rear end members being mounted on a standard x, and one of the front ones connected to the wind-screen. The two frames are crossconnected by bows z which support the hood fabric a. Side panels b, b<1> are engaged between the members of the frame at the top, and in body guides 8 at the bottom. Panels c over the doors are hung on the frame and consist of two panes r, s, Fig. 5, of mica or the like. In fixing, the pane s is held behind the pane r by a flap t, but may be slid down in slots y, y<1> on to a guide in the door. A tab v serves to move the pane or to fix it to the roof of the hood when it is swung up. The hood frame may be attached to a fixed or folding rear covering.
Patent GB-978126-A (GB)
Title: Improvements in or relating to combined roller bearing and freewheel units
IPC: F16D41/07
Filed: 1961-09-06
Abstract: 978,126. Ratchet clutches. A. MAURER. Sept. 6, 1961 [Sept. 6, 1960], No. 31965/61. Heading F2C. In a combined roller-bearing and freewheel unit, bearing rollers 3 and sprags 4, engaging between inner and outer cylindrical races 1, 2, are separated on one or both sides of each roller by spacers 5d, formed to a variety of shapes (Fig. 3, not shown) having line or surface contact with the races 1, 2, and arranged to prevent contact between the rollers and sprags during freewheeling. In Fig. 4 (not shown) rollers of a smaller diameter than the bearing rollers serve as spacers and, in Fig. 5 (not shown) the spacers are formed as small diameter cylindrical sleeves rotatable on cross-pins of a cage, the movement of the spacers in each case tending to release or engage the sprags during freewheeling and drive respectively In Figs. 6a to 12 (not shown) spacers of various shapes are rigidly connected by rings at one or both sides to form cages, of which alternate pockets may house rollers and sprags individually, or together or in a combination having twice as many sprags as rollers, the double pockets being arranged with the rollers preceding the sprags during freewheeling to prevent contact therebetween. In Figs. 13 to 15 (not shown) roller-like sprag members are biased into engagement by coiled torsion springs arranged on one end of the sprags and anchored on the spacers of an open-ended cage.
Patent GB-1150565-A (GB)
Title: Improvements relating to Articles of Vinylidene Chloride/Vinyl Chloride Copolymers
IPC: B41M1/30
Filed: 1966-07-15
Abstract: 1,150,565. Printing on vinylic articles. KUREHA KAGAKU KOGYO K.K. 15 July, 1966 [21 July, 1965], No. 31965/66. Heading B6C. [Also in Division C3] Printed articles made of vinylidene chloride/ vinyl chloride copolymers are produced by printing on their surfaces with an ink prepared from a copolymer obtained from 35 to 98 parts by weight of methyl or ethyl methacrylate or acrylate, 0 to 60 parts of styrene and 0 to 15 parts of vinyl acetate; a ketone, a fatty acid ester, an aromatic compound, or a mixture of two or more thereof, as a solvent, each constituent of the solvent having a boiling point between 60‹ and 130‹ C.; and one or more pigments. The copolymer which acts as the vehicle for the ink preferably also contains up to 10 parts by weight of a diene compound, e.g. butadiene or isoprene, in the prepolymer composition; the specific viscosity of the resulting copolymer is preferably from 0À020 to 0À100, measured in a 4 gm./litre solution in cyclohexanone. Preferred solvents include methyl ethyl ketone, methyl propyl ketone, methyl isobutyl ketone, ethyl acetate, butyl acetate, benzene and toluene; preferred pigments include titanium white and copper phthalocyanine blue. The ink is preferably dried on the vinylidene chloride/vinyl chloride copolymer article using air at 80‹ C. The vinylidene chloride copolymer is specified as one obtained from a mixture of 70 to 95% by weight of vinylidene chloride, 5 to 30% vinyl chloride and optionally 4-12% of a modifying agent.
Patent GB-537183-A (GB)
Title: Improvements in or relating to the production of airscrew blades by moulding
IPC: B32B27/00
Filed: 1939-12-11
Abstract: 537,183. Moulding airscrew blades. DE HAVILLAND AIRCRAFT CO., Ltd., and KING, E. P. Dec. 11, 1939, No. 31989. Drawings to Specification. [Class 87 (ii)] Refers to the production of airscrew blades by subjecting to heat and pressure within a mould a number of "pencils" formed by rolling up shaped sheets of fibrous filling or reinforcing material, e.g. cotton, flax or wood veneer, each having substantially the length of the blade and which are impregnated, before or after rolling, with thermo-plastic or thermo-setting material, and consists in so forming the pencils that at a preselected position or positions along the finished blade the density will be different from that at at another part or parts. Thus the root of the blade or the leading edge may be strengthened by increasing the density at those parts. Preferably the " pencils " are made from wood veneer with the aid of a master pattern sheet the shape of which bears a pre-determined relationship to the grading of density desired ; further, the " pencils " forming the leading edge may be impregnated with the plaster composition to a greater degree. "Pencils" may be formed by rolling up films or sheets of the plastic composition with the impregnated sheets. A thermo-setting composition of the phenolformaldehyde type is specified to protect the blade against abrasion, the moulding is interrupted at an intermediate stage, a protective metal or other insert is placed around the leading edge of the blade and the moulding completed. The root end of the blade may be up-ended in the manner described in Specification 504,377. A mould for the production of a hollow blade is described. Specification 502,409, [Group VIII], also is referred to.
Patent GB-409050-A (GB)
Title: Improvements connected with the picking and take-up motions of looms for weaving
IPC: D03D49/20
Filed: 1932-11-12
Abstract: 409,050. Stopping the picking and take-up motions of looms. CAWTHRA, W., and CAWTHRA, M., 14, Clevedon Place, Ovenden Road, Halifax, Yorkshire. Nov. 12, 1932, No. 32022. [Classes 142 (ii) and 142 (iii).] After the loom has stopped, owing to weft breakage for example, a push rod 32 is operated until a recess 33 thereon engages a catch 34, a lever 31 and a shaft 28 being thereby turned. Levers 36 are thus operated to raise rods 38, 39, which stop the take-up and picking-motions, so that the loom may be turned over by the weaver without these motions functioning. Take-up motions.-The rods 39 operate lever mechanism 42, 45, 46, 49 whereby the take-up motion clutch 50 is disengaged. Picking-motions.-Heart-shaped tappets 3 at each side of the loom, fast on a shaft 1 rotating at the same speed as the crank shaft simultaneously operate arms 4, which are loosely mounted on the picking shafts 5, but are clutchable thereto by the engagement of teeth 9 on slidable clutches 10 with apertures in the arms 4 and in clutch members 8 fast on the shafts. The two clutches 10 are raised and lowered, to cause alternate picking from each side of the loom, by forks 13 on slidable shafts 11 controlled by levers 18, 17, one at each side of the loom. The levers 18, 17 are connected by a rod 20 and operated by a rod 21, and an eccentric stud 22 on a segmentally toothed pinion meshing with a quadrant wheel &c. 27 on the shaft 1. Both spindles 11 are simultaneously raised so that the picking is stopped, when the rod 32 is operated, slotted ends 40 on the rods 36 engaged with necks 16 on brackets 15 on the spindles 11 raising these. According to the Provisional Specification, the take-up catch may be operated by means of a wire or rod so that this catch may be disengaged either simultaneously with or independently of the lifting of the spindles and clutches of the picking motions.
Patent GB-877621-A (GB)
Title: Improvements relating to power factor measurement
Inventor: ALLEN PETER HENRY GAY
IPC: G01R25/00
Filed: 1957-10-14
Abstract: 877,621. Phase-measuring devices. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Nov. 12, 1958 [Oct. 14, 1957], No. 32025/57. Class 37. Apparatus for measuring the power factor of an A.C. circuit comprises two Hall crystals 1, 2, a coil 3 carrying the load current IL producing a magnetic field across the crystals, the current in crystal 1 being obtained from a transformer T1 connected across the load voltage VL and current IL being provided from a transformer T2 connected across a resistance R carrying current IL to crystal 2 having both a phase shifter S and a potentiometer P in its circuit, the Hall e.m.f.s being connected in opposition to a detector D tuned to the second harmonic of the supply frequency #/2#, the amount by which S and P have to be adjusted to make the reading of the detector D zero corresponding to the phase angle between VL and IL and the difference in their magnitudes respectively. The theory of operation is given in the Specification.