baber/WOPTO huggingface dataset:
Patent GB-256424-A (GB)
Title: Improvements in or relating to chucks
IPC: B23B31/06
Filed: 1925-09-29
Abstract: 256,424. Nicholls, C. H. Sept. 29, 1925. Sockets.-In a socket comprising a series of externally and internally tapered sleeves b, the innermost of which is adapted to engage the tapered end a' of a tool, each sleeve is provided with an axial pin c slidable in its smaller end to act as an ejector for the next inner sleeve or the tool. Each pin has a flat-sided head c<1> to prevent its rotation and is prevented from complete disengagement by a screw d. The tool and sleeves may have tang-ends a<2>, b<2> engaging flat-sided recesses b<1> &c., or may be plain and rotated by friction only. The length of the pins is so arranged that the tool will be ejected first and then each sleeve in turn. According to the Provisional Specification the pins have enlarged ends to prevent disengagement.
Patent GB-409970-A (GB)
Title: Improvements in television receiving systems
IPC: H04N3/34
Filed: 1933-08-31
Abstract: 409,970. Television. NAKASHIMA, T., 4326-1,Nishiiba-cho, and TAKAYANAGI,K., 177, Hirosawa-cho, both in Hamamatsu, Japan. Aug. 31, 1933, No. 24220. Convention date, Dec. 12, 1932. [Class 40 (iii).] In a cathode-ray television receiver, striation is avoided by reproducing the picture in detached dots 19 as distinct from continuous lines. To this end the cathode-ray tube has, in addition to two pairs of coils fed with sawtooth current at frame frequency and line frequency respectively, a further pair of coils fed with sinusoidal, saw-toothed or other current at a frequency equal to the number of picture elements per second, Fig. 1 (not shown). The effect of the additional coils is superimposed on that of the line-scanning coils, so that the cathode beam traces a path of the kind suggested at 18, and dwells longer on the detached regions 19 than on the intermediate regions. The auxiliary coil may be at an angle to the main line-scanning coils so as to produce an oblique element and enhance the suppression of striation. Auxiliary plates may be used instead of coils, Fig. 3 (not shown), or the dotforming frequency may be superimposed as an overtone on the line frequency, the two being applied to the line-scanning coils through an amplifier, Fig. 4 (not shown).
Patent GB-796698-A (GB)
Title: Improvements in or relating to power assisted steering mechanism
Inventor: PARKES PHILIP GUY
IPC: B62D5/30
Filed: 1955-08-23
Abstract: 796,698. Vehicle power steering. ADAMANT ENGINEERING CO., Ltd. Aug. 3, 1956 [Aug. 23, 1955], No. 24265/55. Class 79(5) In a power assisted vehicle steering mechanism having a steering shaft 10, a steering gearbox with an input shaft 16 rotated by the shaft 10, a fluid pressure control valve device 28, and toothed gearing 21, 22, 24 connecting the shafts 10, 16, the gearing includes a gear wheel 22 movable transversely of the shaft 10 to actuate the device 28 and carried by a flexible extension 23 of the shaft 10, a lost motion connection being provided between the shaft 10, 16 in addition to the connection provided by the gearing. As shown, the steering gear box comprises an hour-glass worm 12 meshing a roller on a follower arm 13 carried by an output shaft 14 mounting the drop arm (not shown). The extension 23 pinned at 18 to the shaft 10 passes through the worm 12, the pin 18 passing with clearance 19 through a sleeve 17 pinned at 35 to the shaft 16 secured to the worm 12 thereby forming the lost motion connection permitting limited rotation of the shaft 10 and extension 23 relative to the worm 12. The shaft 16 and extension 23 carry substantially coaxial gears 21, 22 both meshing with a gear 24. The extension 23 also carries a roller 26 disposed between valve elements 27. The roller 26 is abutted by a member 29 and the gear 24 is carried by an eccentric portion of a shaft 25, the member 29 and shaft 25 limiting movement of the end of the extension 23 to the axis of the elements 27 and the eccentric portion facilitating adjustment of the mesh between the gears 21, 24. In operation, manual rotation of the shaft 10 causes relative movement between the gears 21, 22 due to the lost motion connection 18, 19, such relative movement causing movement of the extension 23 whereby the roller 26 selectively operates the valve elements 27. Each element 27 is disposed in a valve sleeve 41 and is urged by a spring 53 against the roller 26. Ports 44 in the sleeves 41 are connected to a conduit 45 leading to a pump (not shown) belt driven from the vehicle engine (not shown). A chamber 49 between the valve bores is connected by a conduit 52 to a return reservoir (not shown), and fittings 48 are connected by conduits (not shown) to cylinders 33 containing pistons 34 bearing on the follower arm 13. When the gears 21, 22 are coaxial, the cylinders 33 and the return conduit 52 are connected to the pump through the conduit 45 by means of the valves, a small degree of restriction of flow back to the reservoir being provided to maintain a slight pressure in the cylinders 33. The lost motion connection may alternatively be formed by a toothed dog coupling with clearance between the teeth or by a splined shaft and sleeve with clearance. Specifications 705,372 [Group XXIX] and 760,968 are referred to.
Patent GB-872668-A (GB)
Title: A rotary engine of the geared vane type
IPC: F01C1/063
Filed: 1959-07-15
Abstract: 872,668. Rotary I.C. engines. BANCROFT, C. July 15, 1959 [July 28, 1958], No. 24293/59. Class 110 (2). A rotary I.C. engine of the geared vane type comprises two rotary units each of which comprises two piston sets such as 31, 32 mounted on a common double-throw crank-shaft 26. The pistons 31, 32 have side walls 35, 37, respectively, which are connected to driving- rings 38, 39. The driving rings are supported on the central bearing 42 of the crank-shaft, the crankpins 41 of which rotatably support spur gears 46 which engage stationary ring-gears 47. The firing chambers incorporate injectors, glow - plugs or sparking-plugs and may be interconnected together. The eight working chambers provide diametrically-opposed intake, compression, firing and scavenging strokes and provide sixteen overlapping power strokes for each three revolutions of the crankshaft. The casing 10 is provided with interconnected cooling passages 15, 17, for the circulation of a cooling fluid.
Patent GB-942781-A (GB)
Title: Automatic gauge control device
IPC: B29C48/92
Filed: 1962-06-25
Abstract: 942,781. Automatic thickness control. E. I. DU PONT DE NEMOURS & CO. June 25, 1962 [June 26,1961], No. 24294/62. Heading G3R. An arrangement for keeping constant the thickness of a web of extruded material, e.g. plastic film, comprises an optical or other radiation measuring device 11, 12 which is scanned across the width of the web 10, its output being compared with a reference voltage at 14 and the resultant error signal used to successively control a plurality of motors 19 which adjust the opening of the extrusion orifice at a number of points across its width. The relationship between the position of the measuring device and the point at which adjustment is made may be preselected to allow for uneven material shrinkage or stretch. The selection is'made by the way in which two terminal boards 20, 23 are interconnected, the boards being in the energizing circuit of motor relays 18, which also includes a selector switch 17 normally driven in synchronism with the scanning motion of the measuring device. The switch 17 is driven by a motor 13 which also operates a self-balancing bridge circuit (Fig. 2, not shown), the arrangement being that the slider of one potentiometer is moved to balance out misalignment of -the bridge caused by the slider of a second potentiometer driven by the scanning motor (not shown). The voltage applied to the first potentiometer is adjusted by two further potentiometers connected to "edging nozzles" 43 which detect the edges of the web; this arrangement is to ensure that the selector switch 17 reaches the end of its are of travel at the same time that the scan reaches the edge of the web, even though this edge position may vary due to shrinkage or sway. -The output of the first potentiometer, and hence the movement of motor 13 and switch 17, may be made non- linear by shunting a number of its end turns by resistors. Deviations in the average thickness of the web are used to adjust the speed of a feed pump 45 supplying material to the hopper 46, and excessively high or low pressure in the hopper operates a switch 47 which may either disconnect the error signal to prevent further adjustment of the extrusion orifice, or may adjust the reference voltage to effect an overall correction of the orifice. Specifications 942, 782 and 942, 783 are referred to.
Patent GB-818257-A (GB)
Title: Improvements in the preparation of phenanthridine compounds
Inventor: PEAK DOUGLAS ARCHIBALD
IPC: C07D221/12
Filed: 1956-06-27
Abstract: The invention comprises 2 : 7-dinitro-9-p-nitrophenyl - 10 - methylphenanthridinium salts and their preparation by treating 2 : 7-dinitro - 9 - p - nitrophenyl - phenthridine with dimethyl sulphate at a temperature of at least 160 DEG  C., to give the corresponding 10-methylphenanthridinium methosulphate, and if desired converting the methyl sulphate into another quaternary salt by double decomposition.  The invention also comprises a process for preparing a 2 : 7-diamino-9-p-aminophenyl-10-methylphenanthridiniu salt by reducing a 2:7 - dinitro - 9 - p - nitrophenyl - 10 - methylphenanthridinium salt.  In examples: (a) 2 : 7 - dinitro - 9 - p - nitrophenylphenanthridine is refluxed with dimethyl sulphate to give 2 : 7 - dinitro - 9 - p - nitrophenyl - 10 - methylphenanthridiniu methyl sulphate which is converted by double decomposition with ammonium bromide into 2 : 7-dinitro-9-p - nitrophenyl - 10 - methylphenanthridinium bromide; (b) 2 : 7-dinitro-9-p-nitrophenyl-10-methylphenanthridinium methyl sulphate is reduced with iron powder in aqueous hydrochloric acid and the product is subjected to double decomposition with ammonium bromide to give 2 : 7 - diamino - 9 - p - aminophenyl - 10 - methylphenanthridinium bromide.  Specification 767,588 is referred to.
Patent GB-192730-A (GB)
Title: Electrical etching machines
IPC: C25F7/00
Filed: 1921-09-13
Abstract: 192,730. Johnston, G. F., and Schwuchow, E. G. Sept. 13, 1921. Electrodes; electrolytes, agitating; metals, removing.-Copper, zinc, &c. plates are etched to form half-tone or similar printing-plates by electrolysis, the electrodes employed being formed with perforations, preferably inclined, which act to produce a steady flow of the electrolyte and thereby increase the etching effect and cause it to be evenly distributed, and prevent particles of disintegrated metal, which separate from the plate being etched, from adhering to the electrodes. The etching-apparatus comprises a tank 10 at the bottom of which a conductor plate 17, preferably of carbon, is arranged. The electrodes 11 formed with inclined apertures Fig. 4, are made to contact with the plate 17. The plates 12 to be etched are connected by clips to conductors 18, and the side to be etched faces the corresponding electrode 11. The electrolyte employed is a solution of sal ammoniac, and the electrodes 11 are of iron for copper plates 12, and of copper for zinc plates 12. The piates 12 are carried by conductors 18 which are adjustable relatively to the conductors 15. Polarization may be prevented by agitating the electrolyte by compressed air introduced via pipes 19, 20, 21, and this also assists in preventing disintegrated metal from settling on the electrodes.
Patent GB-816118-A (GB)
Title: Improvements in or relating to bar-stock feeding devices for machine tools
Inventor: PERNETTA CHARLES
IPC: B23B13/00
Filed: 1956-08-09
Abstract: 816,118. Machine-tool details. TENSATOR Ltd. Sept. 10, 1957 [Aug. 9, 1956], No. 24390/56. Class 83 (3). A bar-stock feeding device for machine tools comprises a stock guide tube and a ram therein to feed the stock, with a spiral spring or springs connected to the ram to feed the stock by energy stored in the spring or springs. Stock is fed by a ram 12 guided within a tube 11, and which has an anchor stud 19, Fig. 1, to which the end of the spring 18 is secured. The spring is carried on a bracket 13 secured to the tube 11 near the forward end of the feed movement. The ram is pulled back to uncoil the spring and thus load the bar stock for forward movement. A number of springs may be used on a common spindle carrying a sprocket for a chain drive for the ram. Preferably, the springs are made of metal tape which is pre-stressed so that the tape tends to coil up into a spiral.
Patent GB-1146076-A (GB)
Title: Improvements in or relating to bobbins
IPC: B65H75/14
Filed: 1966-06-01
Abstract: 1,146,076. Thread reels. C. R. TYRER. 1 Sept., 1967 [1 June, 1966], No. 24403/66. Heading B8M. In a bobbin of the thread-reel type, the barrel 5 and one end 8 is formed as a hollow plastics moulding, and the other end 10 is moulded in the same or similar material with a circumferential groove 12 to receive the free end of the barrel, the axial through-hole 16 of the bobbin being defined by central tubes 9, 11 formed integrally with the ends 8 and 10 respectively, the tubes being of substantially equal length and spigotally engaged one with the other. The tubes 9, 11 are rebated as at 14, 15 to provide a continuous surface for the tube when the bobbin is assembled. The two components are preferably injection moulded in a thermoplastic synthetic resin e.g. polyethylene or polystyrene. The two components may be cemented together or the parts may be friction fitted together.
Patent GB-1220782-A (GB)
Title: Improvements in or relating to transformers
IPC: H01F30/02
Filed: 1969-05-14
Abstract: 1,220,782. Transformers. GULF GENERAL ATOMIC Inc. 14 May, 1969 [17 May, 1968], No. 24505/69. Heading H1T. A transformer for high current pulses comprises first 13, 14 and second 11, 12 pairs of flat windings; insulation 16, 17 between the pairs; the windings and insulation being positioned in adjacent parallel relationship so that each (e.g. 11) of the second pair is inductively coupled to one (e.g. 13) of the first pair of windings ; and means for securing the windings and insulation together in a sandwich assembly. The transformer provides a proper impedance match between a high energy pulse input and a magnetic forming coil 18. The flat-spiral primary windings 13, 14 are connected in parallel from the pulse input, and in series with the split-annular secondary windings 11, 12. The secondaries are also connected in parallel with each other and to the earthed plate 23 of forming coil 18. The copper L-plate 34 is positioned between and connects the appendages 32 (of winding 11) and 33 (of winding 12). An insulated copper plate 29 (to reduce inductive coupling between sections 27 and 28), together with insulating sheets 41, 42 and a heat-sink 43, is positioned between windings 11 and 12. Instead of the heat-sink 43, thicker secondary windings having coolant passages therein may be used. Further insulating sheets 58, 59 and press plates 61, 62 surround the assembly which is held together by bolts 67.
Patent GB-389015-A (GB)
Title: Improvements in and relating to combination wrenches
IPC: B25B23/00
Filed: 1932-09-02
Abstract: 389,015. Combination wrenches and screwing taps and dies. STADE, G. H., 1405, Fernwood Road, Victoria, British Columbia, Canada. Sept. 2, 1932, No. 24569. [Class 61 (iii).] A wrench for manipulating nuts of detachable automobile wheels and formed with a socket head 13 and cranked stem 12 has provided thereon a tap or taps and a die or dies for rethreading damaged nuts or bolts, the tap 14 being preferably fixed permanently to the wrench as by welding or by clamping members 16 and the die 15, which may be tapered at the front 21, detachably threaded thereon. The die is hexagon shaped outside and when required for use is detached from the tap and inserted in the wrench head 13.
Patent GB-928225-A (GB)
Title: Method of and means for assembling books of numbers of signatures
IPC: B65H5/22
Filed: 1959-07-17
Abstract: 928,225. Bookbinding machines. R. HEPP. July 17, 1959 [Aug. 29, 1958], No. 24589/59. Class 16. [Also in Group XIX] A bookbinding machine wherein consecutive signatures of a book are separated one by one from a stack (see Group XVI) and deposited on a conveyer which conveys the signatures in series to a stitching and gluing device, is provided with electrical counting mechanism (see Group XIX) for registering the number of signatures passing along the conveyer and with means, which is preset according to the number of signatures in the book to be bound, responsive to the counting mechanism for causing the bookbinding machine to repeat its work-cycle upon the count reaching the predetermined number. The counting mechanism is advanced step-bystep by a switch 29, operated by a cam 26, on each revolution of a shaft 24 driving the mechanism separating the signatures from the stack. This latter mechanism is deactivated for one work-cycle upon the count reaching said predetermined number, so that the last signature of one book is spaced along the conveyer from the first signature of the following book. The counting mechanism triggers off a gluing device 23 to glue, for example, the second and last signatures of a book. A photo-electric cell 33 positioned along the conveyer, energizes a coupling magnet to stop the feed, on detecting the absence of a signature. In order that the space between the last and first signatures of succeeding books should not stop the feed, the circuit of the photo-electric cell is automatically broken after the third counting pulse and not closed again until after the fourth counting pulse (a separated signature taking four working strokes to reach the photo-electric cell). Specification 775,833 is referred to.
Patent GB-1531366-A (GB)
Title: Variable capacitance pressure transducer
IPC: G01L9/00
Filed: 1976-06-15
Abstract: 1531366 Variable capacitance pressure transducer BUNKER RAMO CORP 15 June 1976 [18 June 1975] 24762/76 Heading G1N This comprises an electrically non-conductive substrate assembly 16, surface 24 of which supports a metal diaphragm 12 and has passage 50 connecting hole 30 communicating with surface 24 to the substrate assembly edge. Assembly 16 comprises hermetically bonded ceramic substrates 18, 20, 22. Surface 24 bears fixed capacitor plate 26 surrounded by electrode 28 hermetically sealed to diaphragm 12 to form chamber 44. The arrangement of substrate 22 which bears diaphragm 14 is similar. Plates 26 are connected by conductive material 32 to conductive deposit 34, which is connected by a metal deposit on holes 36 to terminals 40, or alternatively passageway 50 may be metallized. Leads 46 and metallized passageway 48 enable a common exterior connection for diaphragms 12, 14. Chambers 44 may be evacuated via hole 30 and passage 50, which may be sealed by solder on metal deposits 55. Openings 58 are for mounting and passageways 60 for fluid communication between surfaces 24.
Patent GB-322189-A (GB)
Title: Improvements in or relating to the manufacture of iron chromium alloys
IPC: C21C5/00
Filed: 1928-08-28
Abstract: 322,189. Flodin, H. G. Aug. 2S, 1928. Drawings to Specification. Alloys.-In a process for producing ironchromium alloys layers of lime and of briquettes comprising chrome-ore and ferro-silicon are added alternately to a bath of molten iron. Briquettes of iron ore, carbonaceous reducing agent and a binder are first reduced in the furnace to form an iron bath of low carbon content. The whole of the charge may be introduced through a single shaft from the bottom of which it is fed to the furnace by a worm conveyer. Alternatively the iron-ore is fed through one shaft, and the chromeore and lime are fed through another shaft, the gases from the furnace having access to the ironore shaft onlv. The amount of lime added is such that a fluid slag is formed on the surface of the bath.
Patent GB-1309408-A (GB)
Title: Sewing machine feed mechanisms
IPC: D05B29/06
Filed: 1970-05-22
Abstract: 1309408 Differential feed mechanisms UNION SPECIAL MACHINE CO 22 May 1970 [26 May 1969] 24855/70 Heading D1G Two side-by-side differential feed bars 37, 38 with feed dogs 35, 36 of an over-edge or other sewing machine are relatively slidable longitudinally, by virtue of a tapered block 51 secured to the feed bar 37 and engaging a slot 38d in the feed bar 38, and are reciprocated by independent adjustable mechanisms from respective eccentrics 55, 56 on a main drive shaft 30 through pitmans 60, 102, the mechanisms being adjustable independently to adjust the strokes of the two feed bars. The forked rear ends 37a, 38a of the feed bars are slidable on a block 39 mounted on an eccentric pin 41a by which the rear height of the feed bars may be adjusted and vertical movement of the front ends of the feed bars is controlled by a block 45 mounted on a further eccentric 30a of the drive shaft 30 and engaging a fork 37b of the feed bar 37. The feed bar 37 is reciprocated by the pitman 60 through a slotted rocker 64 journalled on a shaft 70, a slidable block 72 and a link 74 and its stroke is adjusted by rotating the head 120a of a threaded rod 120 which abuts a lug 78d on a crank 78 with an arm connected by a link 77 to the slidable block 72. An indicator arm 87 is rotatable with the crank 78 and abuts a scale 85 to show the length of feed. The feed bar 38 is reciprocated by the pitman 102, through a pin 103, which is selectively mounted in holes 105 or 106 of an arm 104 secured to the shaft 70, the shaft 70, a slotted rocker 101 secured to the shaft 70, a slidable block 100 and a link 110. The block 100 is movable, to adjust the feed, through a link 98 and an arm 91 secured to a shaft 80 which is rotatable by a bellcrank lever 86, one arm 86b of which is movable during sewing by for example a treadle or knee press connected thereto. The other arm 86a has a pointer abutting the scale 85 and is movable between two adjustable stops 131a and 132 which set a minimum and a maximum stroke or it may be held in place by a screw 142. The stops are adjustable by rotation of a knurled disc 135 and a head 130a.
Patent GB-1371304-A (GB)
Title: Cantilever toolcarrying mandrel
IPC: B23B29/02
Filed: 1973-05-24
Abstract: 1371304 Tool holders; mandrels; boring bars VSESOJUZNY NAUCHNO-ISSLEDOVATELSKY INSTITUT PO NORMALIZATSII V MASHINOSTROENII 24 May 1973 24917/73 Headings B3T B3B and B3C  A cantilever tool carrying mandrel having a cutting tool secured to its free end comprises two portions 14, 15 fabricated from different materials, the material of portion 15 by which the mandrel is mounted on the machine tool is fabricated from a material having a modulus of elasticity at least 1À5 times higher than that of the material from which the cutter carrying portion 14 is fabricated, this latter portion 14 being of a material of at least 1À5 times lower density than that of the portion 15, the relative lengths of the portions 14, 15 being 40-60% of the total length respectively. A vibration device 23 may be incorporated in the portion 14 which additionally aids the effective cutting action of the tool in use and enhances the surface finish of the workpiece being machined. The mandrel may be mounted in a tool post of a lathe as shown in Fig. 3 or in a boring machine as shown in Fig. 1 where the mandrel constitutes a boring bar.
Patent GB-301145-A (GB)
Title: Improvements in racing tracks for dogs and other animals
IPC: A63K1/02
Filed: 1927-09-22
Abstract: 301,145. Bond, A. G. Sept. 22, 1027. Dog-racing apparatus.-In dog-racing apparatus the track is movable, being constituted by a pair of endless bands A, Figs. 1 and 2, moved round rollers B by any suitable means D, and moving relatively to a stationary lure supported on a rod F and frame E, the rod F extending upwards between the two bands. Rack and wheel means are described for moving the lure also, independently and in either direction. The track may be other than endless, being wound from one roller to another; it may be rigid or semi-rigid and may move in one plane: it may be a disc or part thereof.