baber/WOPTO huggingface dataset:
Patent GB-240558-A (GB)
Title: Improvements in or relating to electrical switch gear
IPC: H02B11/00
Filed: 1924-07-05
Abstract: 240,558. Davies, D. R., and Metropolitan-Vickers Electrical Co., Ltd. July 5, 1924. Sliding switch-carriage arrangements.- One of the separable portions of sliding-carriage switchgear is provided with removable plug members which are inserted in sockets on the movable gear so that when in position these sockets are connected to other sockets on the other switchgear portion by the double-ended plug members. Each plug comprises two relatively movable parts one of which carries the contacts while the other is secured to the switchgear. As shown in Fig. 1, the casing 6 of the movable switchgear has orifices 7, S to receive plug members engaging sockets 1, 2 corresponding to alternative connections. Each plug comprises two portions 11, 12 connected by a resilient portion 15 the part 11 terminating in a tapered contact 13 engaging a corresponding socket and the part 12 in a split pin 14 adapted to engage a socket on the fixed switchgear. Between a shoulder 18 on the portion 11 and an insulating bushing 17 carried by the containing tube 16 is interposed a spring 19. The outer tube 16 is secured to the gear by a bayonet-slot fastening, being provided with a flange 20 and projections 23 so arranged that after these projections have passed through slots 9 in the orifices 7, 8, Fig. 2, and the tube is rotated, the pressure exerted by the spring 19 holds the plug in position. In the modified form of plug shown in Fig. 3 the two portions of the plug are rigidly connected together, the outer end having two knifeblade contacts 24 and the inner end a tapered plug 13 with a pin 25 which engages a recess in the tapered socket to ensure correct engagement of the blades 24 with their co-operating clip contacts in the fixed switchgear structure. A further modification, Fig. 4, has the plug member rigidly secured within the containing tube 27, the spring 32 being interposed between a shouldered portion 28 of this tube and an internal flange 29 of the ring 32 carrying the projections 23.
Patent GB-642360-A (GB)
Title: Improvements in or relating to the stressing of the reinforcing means for prestressed reinforced concrete
Inventor: GLADWIN HAROLD BRUCE
IPC: E04C5/12
Filed: 1948-06-16
Abstract: 642,360. Reinforced concrete. MINISTER OF WORKS. June 16, 1948, Nos. 16226/48 and 13221/49. [Class 20(iv)] In a gripping device for tensioning reinforcing wire in concrete work, the lateral pressure exerted by the gripping surfaces increases towards the unstressed end of the wire, the tensile load being thus uniformly distributed along the gripping surfaces. The wire 2 is gripped by a taper pin 4 in a tapered hole 3 in the anchoring means 1 which is stationary, or moved by a jack to the right. The pin is formed with a flat 4' serrated or roughened to facilitate gripping. The line joining the tops of the serrations tapers more than the hole 3, e.g. so that with a wire of 0.104 inches diameter, the difference in the tapers is 0.012 inches over a length of one inch. When tension is applied to the wire, the difference in the coefficient of friction between the serrations and the wire, and between the wire and surface 1A causes the pins to be drawn further into the hole. The section of the taper pin and the number of wires held thereby may be varied. As described above, the wire is bent through an angle equal to half the angle of the taper pin, but this may be avoided by inclining the axis of the pin at an angle equal to half the angle of the taper pin to the direction in which tensioning takes place. In the case of a multi-holed plate anchor, the axis of each of the tapered holes is suitably inclined. In another construction two wedge-shaped rectangular jaws slide in a rectangular hole in a chuck so that the transverse serrations on the inner surfaces grip the wire more firmly at the larger ends of the jaws.
Patent GB-552342-A (GB)
Title: Improvements relating to coke oven doors
IPC: C10B25/02
Filed: 1941-12-16
Abstract: 552,342. Coke oven doors. SIMON-CARVES, Ltd., and MACGREGOR, A. Dec. 16, 1941, No. 16237. [Class 55 (i)] In a self-sealing coke oven door, each flash plate a is separate from the door seating f, is clamped against the brickwork c by the backstays e, and is recessed to receive bolts f<1> which by clamping plates h hold the door seating against the flash plates. Each flash plate is formed with spaced pads b which abut the brickwork, and with similar pads d against which the backstays are clamped by the rods. Specifications 365,015, 368,384 and 463,262, [all in Group XVIII], are referred to.
Patent GB-671185-A (GB)
Title: Improvements in or relating to the manufacture of corrugated sheets
IPC: B28B1/52
Filed: 1950-06-29
Abstract: 671,185. Making corrugated sheets of asbestos-cement, resins &c. ETERNIT AKT.-GES. June 29, 1950 [June 29, 1949], No. 16294/50. Class 87(ii) [Also in Group X] Corrugated sheets, Fig. 2, are made thicker at the tops and bottoms of the corrugations so that they nest together better, by supplying additional material to a sheet 3, while it is still plastic, through spaced perforations 6 in rotating drums 5. The perforations are arranged to supply a thicker layer of material at the highest and lowest parts of the corrugations. The material may be supplied dry or moistened. Several sheets with their additional material are laid on each other and compressed between suitably shaped pressing members. The sheets may be made of organic or inorganic fibres with a cementitious or synthetic resin binder.
Patent GB-529554-A (GB)
Title: Improvements relating to the crosshead gear of internal combustion engines
IPC: F16C5/00
Filed: 1939-06-03
Abstract: 529,554. Engine crosshead gear. POUNDER, C. C., MOLLER, E., and REBBECK, F. E. June 3, 1939, No. 16348. [Class 122 (i)] Crosshead gear for rectilinearly guiding the end of a connecting rod or eccentric rod of an internal combustion engine is constructed so that it can be swung as a unit with the connecting or eccentric rod about the crankshaft into position for ready accessibility. Each slipper guide D, Fig. 1, which may be a single member or a built-up structure, is provided with a flat back D<1> adapted to be bolted to a plane surface B on the engine frame A. The back D<1> may have a locating spigot E to engage in a slot C in the bottom edge of the surface B. By disconnecting the slipper from the piston rod and detaching the guides D from the frame A, the guides can be moved towards the crankshaft sufficiently to remove the spigots from the slots C and can then be swung back with the connecting rod about the crankshaft to the front or back of the engine.
Patent GB-1443312-A (GB)
Title: Electrical pulse counting arrangement
IPC: H03K21/02
Filed: 1975-04-21
Abstract: 1443312 Pulse counting LILLY INDUSTRIES Ltd 21 April 1975 16419/75 Heading G4D Apparatus for counting electric pulses, for instance representing piece parts moving along a large number of parallel paths, has a plurality of channels receiving pulses independantly; a pulse store 10 for each channel which is set on receipt of a pulse; a scanner 11 which scans the stores in sequence and produces an output pulse whenever it encounters a set store; a total counter 13 which counts the output pulses; and a resetting circuit 22 enabled by the counter changing state to reset the store after its contents have been counted. By arranging that the counter should issue an enabling signal to reset the store only when it has counted it is ensured that, e.g. pulses arriving while a store is being scanned and thus not resulting in a count are held until that store is next scanned. As shown the apparatus counts capsules passing between phototransistors and L.E.D.s associated with a multichannel vibrating conveyer. When a required quantity has been counted a comparator 15 stops the conveyer.
Patent GB-1206683-A (GB)
Title: Electrical lead storage reel for domestic apparatus
IPC: H02G11/02
Filed: 1968-04-05
Abstract: 1,206,683. Reel for electric conductor. PHILIPS' GLOEILAMPENEABRIEKEN N.V. 5 April, 1968 [8 April, 1967], No. 16544/68. Heading B8M. A storage reel for the electric lead of domestic apparatus which includes a reel 1 rotatable about a fixed shaft and comprising a hub 4 and two flanges 2, 3 is characterized in that at or in the proximity of its end the lead 11 is joined to an axial face of the hub, the flange 2 being provided at this joint with an opening 6 through which by the interruption of the joint the reel is fixed against rotation, the lead being capable of being wound under the influence of a resilient member which is stretched when the lead is unwound. The joint preferably consists of a bracket 13 urged against the lead by two screws 15. A stationary casing 16 over the reel 1 is also provided with a recessed portion 17 corresponding to the opening 6, so that on unscrewing the screws 15, the heads 14 thereof are located in the recessed portion 17 and thereby prevent rotation of the reel. The lead 11 can then be removed and replaced if necessary.
Patent GB-951885-A (GB)
Title: A new process for the preparation of thiazole compounds
IPC: C07D277/40
Filed: 1962-05-01
Abstract: Thiazole compounds of the general formula: <FORM:0951885/C2/1> in which R is a hydrogen atom, a phenyl or naphthyl group or a phenyl group substituted with nitro, halogen, alkyl containing 1 to 3 carbon atoms or alkoxy containing 1 to 3 carbon atoms; R1 represents the same groups as those for R but may also be an alkyl group with 1 to 8 carbon atoms are prepared by refluxing a compound of formula: <FORM:0951885/C2/2> in which X is a halogen atom, in an inert solvent, with thiourea or ammonium dithiocarbamate to produce compounds in which R2 is an amino or mercapto group, respectively. As inert solvents methanol and ethanol (which may be aqueous) or acetone may be used.
Patent GB-400336-A (GB)
Title: Improvements in and relating to braces for personal wear
IPC: A41F3/00
Filed: 1932-06-15
Abstract: 400,336. Braces or trouser suspenders. JOHNSTON, S. M., 27, Blythswood Square, MOORE, A. D. and HAMILTON, D. W., 499, Sauchiehall Street, both in Glasgow. June 15, 1932, No. 16891. [Class 141.] Braces consist of a pair of continuous straps A, B, Fig. 4, connected together at the rear by a vertical strip F, and provided with tab ends C in the form shown in Fig. 3. The braces are intended to be worn beneath the shirt and the grips engage the shirt with the buttons. The brace may have only side grips or, alternatively, additional straps and grips may be provided at the back. The attachment of the grips to the shoulder straps is shown in Fig. 3 and allows of sliding movement of the straps.
Patent GB-624684-A (GB)
Title: Improvements in and relating to the control of electric motors driving winding engines, hoists and the like
Inventor: PETCH THOMAS HAYES
IPC: H02P7/34
Filed: 1944-09-05
Abstract: 624,684. Control of D.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd., PETCH, T. H., and LIDDIARD, H. W. C. Sept. 5, 1944, No. 16944. Addition to 577,183. [Class 38(iii)] In the control system described in the parent Specification the amphidyne exciter 5 is provided with an additional field winding 21 which is connected to the rectifiers 11a, 11b, across a resistance 22. An energy-storage device such as the separately-excited motor 13 with a fly-wheel 14 is connected in series with the resistance 22 across the armature of the exciter 5. For low rates of change of the excitation of the field 6, the voltage-drop across the resistor 22 will not be sufficient to break down the forward resistance of the rectifiers and the field 21 will be ineffective. For higher rates of change, one of the rectifiers will pass a current to the field 21, which acts in opposition to the field 6 and controls the exciter output. Additional control neans comprise a condenser 23 connected in series with a resistance 24, which shunts a relay-coil. A sudden change in the exciter armature voltage will energize the coil 25 to close contacts 26 and short-circuit the rectifiers. An alternative arrangement comprises a transformer, the primary winding of which is connected across the armature of the exciter, and the secondary connected through the rectifiers to the additional field. The main generator may carry a secondary winding which acts similarly to the transformer secondary winding.
Patent GB-420279-A (GB)
Title: Improvements in or relating to curtain rail runners
IPC: A47H15/02
Filed: 1934-06-07
Abstract: 420,279. Curtain-rail runners. HUDSON, L. G., 117, Curtain Road, London. June 7, 1934, No. 16952. [Class 52 (v)] A runner adapted to run in a tubular slotted curtain rail f comprises a wheel h enclosed on all sides by a flanged frame c carried by extensions of the wheel axle b, the frame preventing the wheels of consecutive runners from touching each other and being provided with lateral flanges d adapted to fill the width of the tubular rail so as to prevent the draw cords from falling down by the side of the runner. The runner has suspended from it a wire hook e.
Patent GB-717625-A (GB)
Title: Improvements in or relating to audible signals, for example in alarm clocks
Inventor: DENTEL PAUL
IPC: G10K1/074
Filed: 1952-07-07
Abstract: 717,625. Clocks. FABRIQUE D'HORLOGERIE LA VEDETTE SOC. ANON. July. 7, 1952, No. 17017/52. Class 139 [Also in Group XXXVIII] An audible signal mechanism, for example an alarm clock, in which a gong element is struck by a hammer with gradually increasing force and rapidity is characterized in that the hammer is a rotating centrifugal hammer subjected to a braking force which is gradually reduced. The spindle 3, Fig. 1, has a driven pinion 4 and is axially movable between an upper and lower position. The spindle 3 carries a casing 1 inside which there are two reciprocable members 5 having pins 7 on which are loosely mounted two circular hammers 6, Figs. 1 and 2, which co-operate with a gong element 23. Extensions 8 of the members 5 engage the internal conical surface of a fixed drum 9. The lower end 13 of the spindle 3 rests on a cam extension 16 of a lever 15, Fig. 4, which is pivoted at 17 and has a gear segment 19 which meshes with a driving gear 20. The lever 15 is normally positioned so that the cam 16 retains the spindle 3 in its upper position, Fig. 1. When the pinion 4 is rotated the members 5 are moved outwardly by centrifugal force against the pressure of springs 10 and the spindle 3 is subjected to a downward force by the interaction of the brake shoes 8 and the drum 9. At the same time the lever 15 and cam 16 are moved counter-clockwise, Fig. 4, by the gear 20 so that the spindle 3 is allowed to move down gradually and the braking action of the shoes 8 and the drum 9 is gradually decreased so that the frequency and intensity of the blows of the hammers 6 on the gong element 23 are gradually increased to a maximum when the shoes 8 escape from the drum 9. The base plates 14 or bearings therein may be of plastic.
Patent GB-1505035-A (GB)
Title: Overload protection tube
IPC: H01T1/14
Filed: 1976-04-27
Abstract: 1505035 Overload protection discharge tube INTERNATIONAL STANDARD ELECTRIC CORP 27 April 1976 17035/76 Heading H1D An overload protection device comprises a discharge tube having electrodes 1-10 and 2-5 defining a discharge gap L in a sealed enclosure 3, the electrode 1-10 being mounted in a plug 7 of material which softens when the tube reaches a predetermined temperature, whereby external pressure pushes the electrode into the enclosure, and the discharge gap is short-circuited. As shown, the other electrode 2-5 is integral with the enclosure 3, which is made of metal, e.g. aluminium, copper, or iron-nickel-cobalt alloy. The plug 7 is made of glass, and is bonded against an internal shoulder 8 of the enclosure 3. The electrode 2-5 may have a recess 6 containing emissive material, and the tube may contain argon and helium at 0À3 atmos. One or both electrodes may have a conductive coating which will melt at the predetermined temperature to wet the electrodes to improve contact.
Patent GB-1137638-A (GB)
Title: Hand-operated belt sanding machine for wood-working purposes
IPC: B24B23/06
Filed: 1966-04-19
Abstract: 1,137,638. Sanding. EUGEN LUTZ K.G. 19 April, 1966 [24 April, 1965], No. 17144/66. Heading B3D. A portable belt sander comprises a housing 1, a driving motor within the housing for driving at least one of two sanding belt rollers 6, 7, a pressure plate 8 in the housing fixed in relation to the rollers and a guide frame 9 which can be adjusted in height in relation to the housing and pressure plate while remaining parallel to the pressure plate. The guide frame is adjusted by an adjusting screw 21 which swings the frame about shafts 13, 14 on cranks 10, 11 and crank-pins 15, 16. The guide frame is made detachable by use of open bearings 17, 18, the crank-pins being retained in the bearings by spring-clamps 19 while the shafts are retained by spring-clamps (20), Figs. 4, 5 and 6 (not shown). The shaft 14 is rigidly mounted in the housing and the shaft 13 is rigidly mounted in the guide frame as illustrated in Fig. 3 (not shown). The adjusting screw is attached to the shaft 13 by a bearing 22 and is moved axially by a screwed sleeve 24 which is mounted in a cross-piece 25 for swivel movement in the guide frame. An increase in sanding pressure may be applied by hand when handles 2, 3 are pressed downwardly to overcome the pressure of a coil spring 27 in the adjusting mechanism. When sanding is to be effected without the guide frame, the latter is detached and the shaft 14 removed from the housing by shifting it axially to the left (Fig. 4) until keyway (34) in the shaft can clear the head (35) of the retaining screw for the spring- clamp (20) ; if desired, the shaft 14 may be retained by the housing but moved to the right as illustrated in Fig. 7 (not shown), so as to clear the edge (33) of the sanding belt. Figs. 8 and 9 (not shown), illustrate a modified guide frame having a raised edge for use in rabbeting or floor corners. In a modification, Figs. 10 and 11 (not shown), adjustment in height of the guide frame (9a) is effected by an adjusting screw (21a) which moves the frame along inclined surfaces on the bottom of the housing, the surfaces being held together by spring clips (56) which engage in grooves (57) in pins (54). In Fig. 12 (not shown), the cranks are replaced by discs (10c), (llc), adjustment being effected by a push-rod (21c).
Patent GB-116221-A (GB)
Title: Improvements in Folding Scissors.
Inventor: CROOKES FRANK
IPC: B26B13/00
Filed: 1917-11-21
Abstract: 116,221. Crookes, F. Nov. 21, 1917. Pliers, cutters, pincers, and tongs .- Folding scissors and other articles having pivoted members are provided with means for securing the parts in their folded and unfolded conditions. The handle or other member 5 has a slot 8 engaging a pivot-pin 7 on the blade &c. 6. When the handle &c. 5 has been turned into the fully closed or fully opened position, the slot 8 enables it to be moved into such a position that a stop 9 prevents any turning movement. A double spring catch 10 mounted on the pin 7 yieldingly retains the handle in either of the two non- pivotal positions.
Patent GB-414497-A (GB)
Title: Improvements in or relating to the manufacture of caustic alkalis
IPC: C01D1/22
Filed: 1933-06-15
Abstract: In the manufacture of aqueous alkali hydroxide solutions by the reaction of an alkali metal carbonate with lime in the presence of water, a liquor free from iron and aluminium is obtained by adding a purifying reagent, selected from the group consisting of the oxides, hydroxides and water soluble salts of magnesium, barium or strontium, to the liquor prior to the separation of the precipitated calcium carbonate.  The calcium carbonate sludge produced is thereafter separated from the caustic liquor.  The reagent may be added to the lime, to the sodium carbonate or sodium carbonate liquor, to the reaction vessel during the reaction or to the reaction vessel after the reaction, but prior to the separation of the sludge.  The process may be effected by using a lime produced by calcining dolomitic limestone or a mixture of lime with dolomitic lime.  A magnesium compound may be supplied in solution, in suspension or in solid form. Aqueous sodium or potassium hydroxides may be produced by the process. Specification 178,896, [Class 1 (ii)], is referred to.
Patent GB-689877-A (GB)
Title: The thiosemicarbazone of nicotinic aldehyde and process for its preparation
IPC: C07D213/53
Filed: 1951-07-19
Abstract: The invention comprises the thiosemicarbazone of nicotinic aldehyde, and the preparation thereof by condensing nicotinic aldehyde with thiosemicarbazide in an aqueous alcoholic or acetic acid medium.  The product is useful for the treatment of tuberculosis.  In examples: (1) nicotinic aldehyde and thiosemicarbazide are heated in aqueous ethanol; (2) the symmetrical hydrazide of nicotinic acid and benzene sulphonic acid is heated with sodium carbonate in ethylene glycol, the resulting reaction mixture containing nicotinic aldehyde is acidified with aqueous acetic acid through which the evolved nitrogen has been bubbled to trap any aldehyde carried over thereby, and the acidified solution is heated with thiosemicarbazide.
Patent GB-1016600-A (GB)
Title: Improvements in and relating to resonant cavity magnetrons
IPC: H01J23/00
Filed: 1964-04-27
Abstract: 1,016,600. Magnetrons. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. April 27, 1964 [April 30, 1963], No. 17295/64. Heading H1D. In a resonant cavity magnetron having first and second polepieces and a helical wire cathode surrounded by an anode, the cathode supply conductors are in the form of a coaxial line which passes to the interior through the first pole-piece; the output conductors are arranged at, and the anode segments are alternately connected to two circular conductors at, the end of the anode segments remote from the first pole-piece; and the cathode penetrates less than halfway into the space between the anode segments and the second polepiece. Annularly arranged anode segments 13 form resonant cavities 14 and an interaction space 9 housing a cathode 3 connected at its ends to a plate 5, mounted on the end of the central conductor 6, and to the flange of the tube 2, which passes through one of the polepieces 10, and is supported by a conical insulator 7. The output conductor 23 is connected to a transverse connection 15 between the anode segments bounding two successive resonant cavities, and passes through tube 19 to terminate in a tube 24, which may be coupled to a coaxial line or waveguide and is supported by a conical insulator 25. Alternate anode segments are connected to conductors 16 and 17 which pass through the groove 18 of each segment.
Patent GB-200340-A (GB)
Title: Improvements in knife sharpeners
IPC: B24D15/08
Filed: 1922-06-23
Abstract: 200,340. Butler, J. June 23, 1922. V-slot blade sharpeners.-A wooden or other body 1 is shaped to form a handle 2 and has a transverse V-shaped slot 3. On one side of the slot is secured a sharpening-member 5, and on the other side are secured two sharpening-members 4, one on each side the member 5, the members 4, 5 being maintained in position by pins or nails 7. The slot is provided with a metal cover 7, shown raised in the Figure, in which is a slot 8 adapted to act as a guide for the knife. The sharpening-members comprise pieces of cast steel or other metal, in the surfaces of which are cut V-shaped teeth.