baber/WOPTO huggingface dataset:
Patent GB-1471331-A (GB)
Title: Resistance welding controls
IPC: B23K11/25
Filed: 1974-03-22
Abstract: 1471331 Resistance welding control systems CUTLER-HAMMER EUROPA Ltd 22 March 1974 [22 March 1973] 12971/74 Heading H2H Resistance welding apparatus comprises means whereby a succession of signals are derived each representing an instantaneous value of the resistance between metals which are being welded, together with means for registering the peak value of the series of signals and further means for terminating the welding operation when the value of a signal is less than the value of the preceding signal. A current pick-up device responsive to the welding current provides a voltage signal which is fed into a variable gain integrating circuit so as to be converted into a current waveform which is then fed into a comparator (1) together with a reference signal Vcc representing the desired welding current. The output of the comparator which is in the form of a train of pulses at the A.C. supply frequency, these pulses being supplied to a pulse generator wherein the pulses are converted into pulses having high and low values, these latter pulses forming one input to a sampler device. A second signal is developed by a voltage pick-up device which represents the voltage across the welding electrodes and this voltage signal is also fed into the sampler device by way of a variable gain amplifier, the signal being modified to offset the resistance of the electrode connecting leads. The output of the sampler device consists of a train of pulses representing the instantaneous values of the input signals to the sampler device. The output from the sampler is fed to a second comparator (2) both directly and by way of a peak reading memory which registers the peak value of the output pulses from the sampler. The attenuator between the peak reading memory and the comparator (2) allows adjustment of the output signal from the memory according to the metals being welded. When the comparator (2) senses that a sampled signal has a value less than the signal preceding it, the comparator output is such that a timer develops, after a predetermined delay period, a signal which causes termination of the welding operation. A circuit is provided for calibrating the welding current and voltage signals and means are provided to avoid spurious operation when a " welding start " signal is initially applied to the apparatus via logic circuitry.
Patent GB-400305-A (GB)
Title: Improved manufacture of tennis and like racket frames
IPC: A63B49/10
Filed: 1932-05-05
Abstract: Tennis and like racket frames are coated, by moulding under pressure or by die casting, with a strengthening covering of an artificial mass containing cellulose acetate or a cellulose ether, e.g. benzyl cellulose.  The basic article may be of wood, artificial wood, or of wood of inferior quality or of plywood.
Patent GB-1168946-A (GB)
Title: Apparatus for Casting and Thermally Curing Plastic Sheets
Inventor: BEATTIE JOHN ORNE
IPC: B29C39/00
Filed: 1968-03-18
Abstract: 1,168,946. Casting plastics sheets. J. O. BERTIE. 18 March, 1968, No. 13055/68. Heading B5A. An apparatus for casting and curing plastics sheets comprises a plurality of tempered glass plates arranged in parallel side-by-side relationship, the spaces between the plates being divided into casting moulds 62 and cells 40 through which curing fluid is circulated. Each cell 40 is formed by two plates 44 and 44<SP>1</SP> sealed to the hollow aluminium frame 46 of the apparatus by a rubber seal 45, the frame 46 having apertures 48<SP>1</SP> and 50<SP>1</SP> through which curing fluid flowing through the hollow parts 48 and 50 of the frame enters the chamber 52 of the cell 40. The casting moulds 62 are formed between a plate 42 and plates 44 and 44<SP>1</SP>, marginal seals 60 being interposed between plate 42 and plates 44 and 44<SP>1</SP>. This arrangement will cast plastics sheets up to “ inch thick at least; for sheets of ¢ inch thickness or more the glass plate 42 is removed and the sheet cast between adjacent cells 40 to achieve efficient curing. The plates are supported in a vertical frame, Fig. 1 (not shown), and held together by a spider clamp having a hub (73) and spokes (75). Each mould (62) has a separate container (30) supported above it from which castable fluid plastics material is poured in. The containers (30) are evacuated and filled with weighed amounts of fluid plastics material which flows into the moulds 62 through tubing (90) and (92), tubing (92) extending to the bottom of the mould. The curing fluid used is water heated in tank (100) by steam circulated through conduit (102). The heated water enters each cell 40 through hollow frame 50 and aperture 50<SP>1</SP> via hoses (16) connected to tank (100) by pipe (104) and leaves each cell through hoses (14) and pipe (117) to tank (120) where it is reheated. To cure or polymerize any residual monomer steam is then passed into cells (40) through hoses (14). To separate the cast sheets from the moulds the apparatus is cooled by passing cold water through the cells 40. Suitable plastics materials for casting are single or mixed monomers or partial polymers e.g. methylmethacrylate, styrene, allyl diglycol carbonate, glycol dimethacrylate and styrene-acrylonitrile copolymer. The sheets may be pigmented.
Patent GB-330364-A (GB)
Title: Improvements in or relating to clamps for hollow electric cables
IPC: H02G7/05
Filed: 1929-04-27
Abstract: 330,364. Hofmann, J. W. April 27, 1929. Sleeve couplings.-In order to prevent vibrations in a hollow overhead conductor from causing fracture at the point where the conductor joins a branching-clamp, a filling bolt prolonged beyond the clamping wedges is inserted within the conductor at the clamping point. In the branching-clamp shown in Fig. 1, the hollow conductor b and the filling bolt d are held in position within the body of the clamp a by, the wedges c. The filling bolt is cylindrical for the greater part of its length but is tapered towards its free end. A greater damping effect is obtained by the construction shown in Fig. 2a, in which a tapered head-piece f is provided on the free end of the filling bolt. Fig. 3 shows a modified construction in which the diameter g of the filling bolt is greatly reduced behind the head-piece f. The stem g of the filling bolt may be detachable from the head-piece and the tapered portion d, and may be of a different material.
Patent GB-116981-A (GB)
Title: Automatic Electric Switching Apparatus.
Inventor: CONNER MERRIT SCOTT
IPC: H02J7/00
Filed: 1917-09-14
Abstract: 116,981. Conner, M. S., and Puckette, C. C. Sept. 14, 1917. Electro-magnetic switches.-In battery-charging systems, the cut-in switch for the generator M has three cores B, C, D. The central core C has a fine wire winding which is in series, with a fine winding H on the core B, the two being placed across the generator. The armature E is pivoted on and forms a polar extension of the central core. A series coil is placed on each of the cores B, D; these coils reinforce the switching contacts, when the circuit has been closed by the coil H. On reversal of current both series coils assist the spring L or gravity to open the switch.
Patent GB-142676-A (GB)
Title: Improvements in steam winches
IPC: B66D1/08
Filed: 1919-05-26
Abstract: 142,676. Rose Street Foundry & Engineering Co., and Gordon, S. H. May 26, 1919. Drawings to Specification. Winches.-In a steam winch, the fore-end of each winch cylinder is formed in one with the adjacent side frame an an integral casing.
Patent GB-1357745-A (GB)
Title: Lubricating oil compositions
IPC: C10M137/10
Filed: 1971-05-05
Abstract: 1357745 Hydroxyamine salts of organothiophosphoric acids ESSO RESEARCH & ENG CO 14 April 1972 [5 May 1971] 13208/71 Heading C2P [Also in Division C5] Hydroxy-amine salts of di-, tri- or tetrathiophosphoric acids having the Formulµ I and II where R<SP>1</SP>, R<SP>2</SP> and R<SP>4</SP> are hydrogen- and carboncontaining groups, R<SP>3</SP> is aromatic and X<SP>1</SP> and X<SP>2</SP> are oxygen or sulphur are made by reacting the thiophosphoric acid with the hydroxyamine, the amine preferably being added to the acid at 50-120‹ C. over about 30 mins. The thiophosphoric acid can itself be prepared in situ by reacting P 2 S 5  with an alcohol or thiol. In an example, the ethanolamine and monoisopropanolamine salts of isodecanol dithiophosphoric acid are prepared by the above procedure, in a mineral oil medium. The salts are lubricant additives (Division C5).
Patent GB-561998-A (GB)
Title: Improvements in the manufacture of artificial stone
IPC: C04B40/02
Filed: 1942-09-21
Abstract: Heat and sound insulating stone is made by moulding an aggregate of micro- or macro-porous siliceous material, e.g. of pumice, or diatomaceous earth, or produced by gas- or foam-expansion, or by drying gels, with a binder, e.g. slaked lime or Portland cement, and water, using a mould with small openings to allow passage of steam, the mortar being vibrated or lightly compressed to fill up any voids, and steamed after closing the mould and securing the walls against displacement.  Sudden pressure changes and great expansion are thus pvoided, thereby reducing cracks &c. in the aroduct.  The lid of the mould may be bolted down and may have a small clearance from the mould - sides. Known additives facilitating steam-curing and increasing the strength of the product may be used.
Patent GB-133149-A (GB)
IPC: B63H11/11
Abstract: 133,149. Gill, J. H. W. Oct. 2, 1918. Propelling by water jets.-The casing P of a centrifugal pump mounted on a vertical spindle is built into the vessel under the tank top B, which is stiffened by a doubling plate V. The inlet passage I and discharge passage D are formed in the bilge keel K, and a recess S is provided to contain a reversing vane or bucket. The cover-plate C carries the bearings and stuffing- box for the impeller R of the pump. A steam turbine T and gear-box X are mounted on the columns U, and a flexible coupling F may be provided. In a modification, the pump may be provided with double impeller and two discharge passages, and the passages may be kept wholly within the vessel. The construction shown in Fig. 1 may also be modified to avoid the use of the hollow bilge keel K.
Patent GB-1322993-A (GB)
Title: Method of producing optical waveguides
IPC: C03C21/00
Filed: 1971-05-05
Abstract: 1322993 Glass fibres for optical waveguides CORNING GLASS WORKS 5 May 1971 [11 May 1970] 13326/71 Heading C1M Glass fibres for optical waveguides and having a large cladding-core ratio such as total diameter to core diameter of 10 : 1 to 300 : 1, the core and cladding having different indices of refraction, are manufactured by forming a film 12 of core glass on the inside wall of glass tube 10 of cladding glass, heating the tube and film composite as in furnace 14 and drawing the heated composite to reduce the cross-section and collapse the film of core glass to form a solid fibre 24. The glass film may be formed by passing a liquid through the tube to effect ionexchange; by sputtering; vapour disposition or depositing a glass frit and the glass per se may be deposited on a glass similar to that of the cladding but with an added dopant, or the dopant alone may be deposited to react with the glass of the tube. Preferably, the glass of the cladding is a fused silica and dopants are oxides of one or more of Ti, Ta, Sn, Nb, Al or Zr, the dopant or dopants comprising around 5%. In a preferred method, oxygen is bubbled through a liquid mixture of SiCl 4  and TiCl 4  to entrain vapours thereof, which are passed through a gas-oxygen flame to hydrolyse the vapours and form a " soot ", i.e. minute glass particles which are deposited on the tube wall, the thickness of the layer being controlled by flow rates, distance of flame from tube, inner diameter of tube and time. A slight vacuum may be applied at the opposite end of the tube. The layer is then sintered. Heating and drawing of the tube is preferably effected in an oxygen atmosphere and the solid fibre is then further heated in an oxygen atmosphere. By suitable choice of core and cladding glass, for any one transmitted light, the core radius can be chosen for transmitting only one mode, particularly as disclosed for HE11. Specification 1,322,992 is referred to.
Patent GB-316993-A (GB)
Title: Improvements relating to flaps of pockets in the lids of gramophone cases
IPC: B65D85/57
Filed: 1928-05-07
Abstract: 316,993. Houghton-Butcher Manufacturing Co., Ltd., and Denniss, A. J. May 7, 1928. Plywood sheets. - A threeply board A constituting a flap in a gramophone lid to provide record storage is fitted with a metal edging B compressed thereon to lie flush with the surface and prevent warping. The edging has indentations to bite into the board and metal strips may also be applied across the board.
Patent GB-789578-A (GB)
Title: Improvements in railway draft appliances
Inventor: KAYLER FRANK HOMER
IPC: B61G7/10
Filed: 1956-05-01
Abstract: 789,578. Combined buffer and draw-gear. AMERICAN STEEL FOUNDRIES. May 1, 1956, No. 13386/56. Class 103(5) The striking casting 42 of a combined buffer and draw-gear is secured to the centre sill 2 and is provided with downward extensions 104 having slots 106 therein for accommodating a plate 108 which supports the yoke 14 in the region of its pivotal connection with the coupler shank 12. The plate 108 (Fig. 3) is retained in position by a lip 110 and by a removable plate 113 secured to the flange 39 of the centre sill 2. The retaining lip may be provided at both ends of the plate 108 removal being effected by rotating the plate in a horizontal plane and withdrawing it through one of the slots 106 specially enlarged for this purpose. A removable stop prevents accidental displacement of the plate 108.
Patent GB-135085-A (GB)
IPC: F24H1/12
Abstract: 135,085. Winterflood, B. W. Feb. 27, 1919. Internally-fired boilers. - Water fed in at the funnel 12 drips over the edge of the tray 30 on to the dome 5, and after traversing the outer annular space 32 passes by way of the tube 6 to the inner annular space 33 finally passing to the outlet 21 by way of the cut-away part 18, dome 17, and tube 20. The tube 20 is fitted either outside the inner annulus as shown, or in the water space itself of the annulus 33. In a modification, the inner space 33 is flanged outward to meet the cylinder 4 to lead any condensation away from the burner 25. In this case the flared skirt is perforated to allow the passage of products of combustion.
Patent GB-677073-A (GB)
Title: Improvements in or relating to a machine suitable for cleaning grain and milling products such as for example bran
IPC: B02B3/08
Filed: 1949-05-20
Abstract: 677,073. Cleaning grain &c. BUHLER, GEB. May 20, 1949 [May 25, 1948], No. 13591/49. Class 58 In an apparatus for cleaning grain and milling products such as bran having a beater rotor 3 and a frame with a perforated drum 2 there are provided a tangential inlet and means for regulating the length of the path of the materials. As shown, Fig. 1, the material is fed tangentially between two interlinked baffles 6, 6 pivotably disposed between two sidewalls extending parallel to the axis of the perforated drum 2 which baffles are adjusted by a setting means operated by a wheel 14 so that the entry of the material may be adjusted along the length of the drum. In a modification, Fig. 6, the material enters the drum tangentially at 16 the drum being provided over its entire length on the inside with baffles 17 adjustable by the common adjusting means 18 so that the length of travel may again be varied according to comprises three slides 22 arranged in line lengthwise of the drum so that the length of travel may again be varied according to which slide is open. In another modification, Fig. 7 (not shown), the drum is provided with a bay extending over its entire length comprising an impingement face against which the material is flung at each revolution of the beater.
Patent GB-597385-A (GB)
Title: Improvements relating to electric tumbler switches
IPC: H01H23/16
Filed: 1945-06-13
Abstract: 597,385. Tumbler switches. WALSALL CONDUITS, Ltd., and GOUGH, E. June'13, 1945, No. 13606/46. Divided out of 597,341. [Class 38(v)] A tumbler switch is provided with a snap-action mechanism comprising a member 27 having a prong 24 which slides in a slot in a plate 21 pivoted in arms extending from the dolly 16. The member 27 carries the movable contacts 30 and is pivoted at 28 in arms 18 having a limited rocking movement about the pivot pin 14. A spring 3 surrounds the prong 24. When the dolly is moved from either of its extreme positions the moving contacts are disengaged positively from the fixed contacts while the spring 3 is being compressed, the snap-action mechanism coming into operation as soon as the contacts have been separated. The pivot pin 14 is provided with an extension 35 which enters a slot in the switch base as described in Specification 597,341.
Patent GB-566191-A (GB)
Title: Improvements in or relating to electric circuit interrupters
IPC: H01H31/12
Filed: 1942-09-28
Abstract: 566,191. Fusible cut-outs. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. Sept. 28, 1942, No. 13612. Convention date, Sept. 26, 1941. [Class 38 (i)] A fuse holder of the type pivoted at the lower end and adapted to be released at its upper end when the fuse blows, so as to drop and open the circuit, comprises a tube within which is a renewable fuse unit provided with a striker that is biassed by a spring and is freed by blowing of the fuse to draw out the arc and release a catch that engages a co-operating member carried on the upper end of the fuse holder. In one form, the holder is carried on a lower terminal 18, Fig. 1, which has trunnions 34 located in slots 38 in a bracket 37. The upper terminal 16 carries pins 26 coacting with a latch 54 to hold the fuse upright. A loose cap 20 adjacent the upper part 50 of the latch is forced up by a striker 98 acting under the pressure of a spring 102 when the fuse 88 blows. The latch can be released manually by a lever 72 with a manipulating ring 70. The connections 56, 60 are resilient and assist in throwing the fuse holder out. Its movement is limited by studs 36 co-operating with surfaces 40, 42 on the bracket 37. Contact between the upper terminal 16 and the fuse 88 is made by a sleeve 28, slider 78 and fingers 82 engaging the rod 84. A liner 86 of boric acid &c. produces an arc- - extinguishing gas and a displaceable disc 92 closes the lower end of the holder. A refill is inserted by removing the plug 80, tube 76, liner 86, spring 102 and slider 78 and replacing these parts. In a modification, the cap 120, Fig. 2, retains a tail 130 on a lever 132 pivoted on the fuse holder and engaging the latch 142. For manual release, the latch 142 is lifted by a lever 158 attached to the manipulating ring 156. The pivot 34 and stop devices 65, 108 are provided. Other forms of pivot and of contact 114 for engaging the lower terminal 18 are described, in which the spring contact acting as a detent co-operating with a cam-like surface on the terminal may serve as the stop device so that by applying force to the holder the projection on the cam surface may be forced past the spring detent when the holder is to be detached.
Patent GB-1140727-A (GB)
Title: Apparatus for use in the photometric and/or spectrophotometric examination of liquids
IPC: G01N21/03
Filed: 1966-03-28
Abstract: 1,140,727. Spectrometric cells. HELLMA G.m.b.H., W. HUFENREUTER, L. MAYER and P. MAYER [trading as HELLMA G.m.b.H. & CO. K.G.]. March 28, 1966 [March 30, 1965], No. 13639/66. Heading G2J. A cell having a chamber 5, Fig. 7, for the liquid being optically examined, is provided with a liquid flow passage 9 extending parallel to a major dimension of the chamber 5, one end of the passage 9 communicating with the chamber 5 and the other end opening to the outside of the cell via an openable and closable valve 16. As shown the cell is of rectangular cross-section, with one side wall thicker than the remainder and being bored to form the passage 9. The valve 16 is provided in a head member which also has a ground aperture receiving the ground mouthpiece 13 of a reaction vessel 14<SP>1</SP> containing a chemical which may be added to the chamber 5 as required. Gases formed in chamber 5 may also be withdrawn through stopper 26<SP>1</SP> or the latter may be rotated to close the outlet from vessel 14<SP>1</SP>. In a modification the reaction vessel has no outlet through a stopper 26<SP>1</SP> and the mouthpiece 13 has a bore (23), Fig.1 (not shown) which may be aligned, or not as required, with an outlet passage in the head member (2) by rotation of the whole reaction vessel (14). In a further form, Figs. 8, 9 (not shown) the reaction vessel is omitted and the upper outlet from chamber (5) is through a ground mouthpiece (28) to which a flexible tube may be fitted.
Patent GB-932177-A (GB)
Title: Improvements in or relating to a melting and holding furnace
Inventor: HIGGS ARTHUR
IPC: C22B21/00
Filed: 1961-04-15
Abstract: 932,177. Metal melting furnaces; discharging molten metals. SCOTTISH GAS BOARD. May 14, 1962 [April 15, 1961], No. 13655/61. Class 51 (2). [Also in Groups XIII and XXII] A melting and holding furnace for aluminium or alloys thereof comprises a gas-fired melting chamber 11 separated from a holding chamber 12 by a bridge wall 13, the holding chamber being heated by a pair of U-shaped tubes 18 and 19 immersed in molten lead 17 over which floats the molten aluminium. Tube 18 is fired by gas and tube 19 is supplied with hot waste gases extracted at 15 from the melting chamber 11. Nitrogen supplied at 20 and vented at 21 is used to drive the molten metal through spaced outlets 12A to successive feed pockets 24 and 27 connected by ducts 23 to holding pots 22 feeding die-casting machines. Each feed pocket 27 and holding pot 22 has the molten lead base 32 and a U-shaped, gas-fired tube 33 and each pocket 24 and 27 and holding pot 22 also has feed pipes 34 and relief pipes 35 for nitrogen. Each duct 23 includes a rising inner graphite tube 36 enclosed by an aluminised steel tube 37 heated by gas burner 40 and enclosed in a refractory housing 38 with a flue 44. The graphite tube 36 is secured at 46 to the steel tube 37, the other end being free to allow of differential expansion. The furnaces and conduits may be oil-fired or heated by electric elements, and automatic temperature control of the various parts may be installed.
Patent GB-982409-A (GB)
Title: Windings for dynamo-electric machines
IPC: H02K3/22
Filed: 1962-04-09
Abstract: 982,409. Making dynamo-electric machines. SIEMENS-SCHUCKERTWERKE A.G. April 9, 1962 [April 8, 1961; Nov. 7, 1961], No. 13663/62. Heading B3A. [Also in Division H2] In arrangements for cooling the windings of a dynamo-electric machine (see Division H2) the individual conductors 1 of a conductor bar A, B are arranged in columns I-IV separated by spacers 2 surrounded by a sheet metal ring 3 and inserted into the sleeve 4. Wedges 5 are inserted into the sleeve, and the arrangement soldered or welded. Separate rings may be provided for each column. Figs. 3, 4 (not shown) or the rings may be replaced by end members having slots to receive the columned off conductors, Figs. 5-9 (not shown). Specification 979,446 is referred to.