baber/WOPTO huggingface dataset:
Patent GB-1488665-A (GB)
Title: Calcining calcium sulphate dihydrate
IPC: C01F11/46
Filed: 1973-11-27
Abstract: 1488665 CaSO 4 .2H 2 O calcination; gypsum kettles BPB INDUSTRIES Ltd 31 Oct 1974 [27 Nov 1973] 54940/73 Heading ClA Calcium sulphate dihydrate is calcined by supplying heat to the calcination vessel, both indirectly through the external walls, and directly via the introduction of non-reactive hot gases into the interior of the calcining mass through a tube extending generally downwardly from the top of the vessel, which tube is provided with at least one opening in its lower part immersed in the calcining mass. The hot gas introduced into the sulphate charge is preferably generated by combustion of a fuel, A typical apparatus of the invention is shown in Fig. 3; tubes 29 and 31 respectively carry the dihydrate into, and the hemihydrate out of, the calcination vessel, hot gas being supplied via (4), and leaving via (33) which leads to a cyclone or other dust collection apparatus (not shown); the solids collected at the cyclone &c., are returned to the calcination vessel via tube 36. If desired the injection of hot gas may be via a plurality of holes along a hollow stirrer shaft (38), or via a separate gas inlet tube (4) arranged concentrically around the stirrer shaft.
Patent GB-1416698-A (GB)
Title: Chair having leg and foot supporting means
IPC: A61G5/00
Filed: 1972-11-30
Abstract: 1416698 Invalid chairs LANDSTINGENS INKOPSCENTRAL 30 Nov 1972 [2 Dec 1971] 55427/72 Heading B7B [Also in Division A4] An invalid chair is provided with a seat 24 pivotally connected at its rear end to a backrest 16 and at its front end to the upper part 40 of a leg-rest, the lower part 38 of the leg-rest being longitudinally displaced relative to the upper part and the upper part being pivoted about its pivotal connection 44 with the seat 24 when the back-rest is rearwardly displaced about its pivotal connection 20 with the seat frame. A rod 56 is pivotally connected to the back-rest and extends into a tube 54 pivotally connected to a bracket 48 extending from the upper part 40 and to a linkage 68, 70 pivotally connected to the lower part 38. An arm 58 engages with one of a number of lugs 66 on the tube to hold the leg-rest in an adjusted position. In a second embodiment, the end of the tube 54 is fixed to a linkage 68a, 70a pivotally connected to the lower end of the lower part of the leg-rest, a link 48a being pivotally connected to the pivotal connection 44 and to a point in tube 54 spaced from the end thereof. A calf support 76 may be connected to link 70a. In a third embodiment the upper and lower parts 85 and 80, respectively, of the leg-rest form opposed sides of a parallelogram linkage.
Patent GB-1269248-A (GB)
Title: Preparation of pig iron samples
IPC: G01N1/36
Filed: 1969-11-13
Abstract: 1,269,248. Centrifugal casting processes. CENTRE NATIONAL DE RECHERCHES METALLURGIQUES. 13 Nov., 1969 [15 Nov., 1968], No. 55543/69. Heading B3F. [Also in Division C7] Pig iron samples are prepared by tapping the melt directly from a furnace into a centrifuge and centrifuging the iron until it is solid. Melt is poured into a centrifuge tube 1 at 2 and forced on to end blocks 5, 6 of the tube 1 which rotates about an axis 18 at 2500 to 3000 r.p.m. An asbestos liner 19 is provided with tapered ends 22, 23 which brake the jet of molten metal impinging on the end blocks 5, 6. The end blocks 5, 6 are held in place by plates (7, 8, not shown) bolted to cradles (15, 16) midway along and by each side of the tube 1. The end blocks are removed with a covering of solid pig iron, the samples are polished and subjected to spectral analysis.
Patent GB-555591-A (GB)
Abstract: 555,591. Galvanometers. GALL, D. C. March 28, 1942, No. 4152. [Class 37] In a two-coil galvanometer movement the auxiliary coil is flexibly connected to the main coil so that when current is supplied to the auxiliary coil it turns on its axis and biases the suspension of the main coil to an extent proportional to the applied current. The auxiliary coil 1 is suspended from a metal or fibre strip 2 carried by a fixed part 3. Below the coil 1 is a further suspension strip 4 on which is the galvanometer coil 5, the suspension of which is completed by a ligament 6. The coil 5 is situated within the field of a magnet 7 whilst the coil 1 is situated within the field of another magnet 8, or both coils may be influenced by a common magnet. The coil 1 and magnet 8 may be larger than the galvanometer coil 5 and magnet 7, as shown, or they may be of similar or smaller size. A mirror 11 is mounted for movement with the coil 5. The coil 1 may be fed with an extraneous current to alter the zero setting of the coil 5 or the instrument current may be passed through both coils to increase the sensitivity.
Patent GB-1101779-A (GB)
Title: Process for the preparation of halogenated aromatic compounds
Inventor: KOHLL CHARLES FRANCOIS
IPC: C07C255/50
Filed: 1966-12-12
Abstract: Aromatic compounds containing a halogen atom ortho to a CO2H, COCl, CN, CHCl2 or CRCl2 group (R = C1- 5 alkyl) are prepared by reacting aromatic compounds containing a halogen atom or nitro group ortho to a CH2R1 (CH3, CH2Cl or CH2R) group, with Cl2 in presence of a mixture of hetero-aromatic nitrogen base and an amount of P compound not more than 0.05 mole per mole starting material for each CH2R1 group present.  In Examples, (1) 6-chloro-2-nitrotoluene is chlorinated in presence of a mixture of pyridine with H3PO4, PCl5 or POCl3 to give ArCHCl2 ArCOCl, ArCN and ArCO2H (where Ar = 2,6-dichlorophenyl), (2) the chlorinated mixture is oxidized (Cl2/H2O/FeCl3) to give mainly ArCO2H, (3) the oxidation product is reacted with SOCl2 to give mainly ArCOCl, and (4) the crude ArCOCl is reacted with NH3 to give ArCONH2 and the latter dehydrated with POCl3 to ArCN.
Patent GB-1190667-A (GB)
Title: Apparatus for Automatically Examining Railway Tickets.
IPC: G07B15/00
Filed: 1967-12-12
Abstract: 1,190,667. Checking fares. TATEISI ELECTRONICS CO. 12 Dec., 1967 [23 Dec., 1966], No. 56433/67. Heading G4T. An automatic fare collection system for a railway for use with tickets each bearing an identification code and area for recording information thereon, comprising at least one entrance and exit barrier at each station, each entrance barrier including means for recording a code identifying the entrance barrier on a ticket inserted therein, each exit barrier including means for reading the ticket code and entrance barrier code on a ticket inserted therein and transmitting these codes together with a code identifying the exit barrier to a recording apparatus. Each entrance barrier includes a switch 20 closed by an inserted ticket to energize solenoid 21 opening the barrier and setting a flip-flop 23. The set output energizes a rotary solenoid moving heads 26, 27 over the ticket. Timing marks pre-recorded on the ticket are sensed by head 26 to step counter 31 and fire a one-shot multivibrator 32 connected to the inputs of AND gates 33-36. The entrance code is represented by the positions of pins 39 in the holes 38 of a plug-board 37 and recorded on the ticket by a head 27. Each exit barrier includes a switch 41 closed by a ticket to set flip-flop 43. The set output energizes rotary solenoid 44 moving heads 46, 47 and 48 over the ticket. The timing marks are sensed by head 46 to step counter 52 and apply an input to each of the AND gates 53-56 in turn. The entrance code is sensed by head 47 and applied as the other input to the AND gates 53-56 to set the corresponding flip-flops 59-62. Head 48 erases the entrance code. The final output from counter 52 fires a one-shot multivibrator 64 to reset flip-flop 43 and set flip-flop 65. The set output is applied to AND gate 66 and over line A1 to a corresponding AND gate 102 1 -102 n  of a central recording apparatus, there being one gate 102 1 -102 n  for each exit barrier. A counter 100 applies a second input to the appropriate gate 102 1 -102 n  and the output is applied over a line B 1 -B n  to the AND gate 66 and to an OR gate 103 to lock the counter in position and energize the recording apparatus 104. AND gate 66 is opened by a signal on line C 1  from the recording apparatus to step a counter 67 applying input signals to AND gates 68-71; 84- 87; and 88-91 in turn, whereby information concerning the ticket code, entrance code and exit code are transmitted over lines D 1 -G 1  to the recording apparatus. The ticket code is sensed by photo-electric cells 72-75. The exit code is programmed on plug board 92.
Patent GB-1451229-A (GB)
Title: Cooking utensil of laminate form
IPC: A47J36/02
Filed: 1973-12-06
Abstract: 1451229 Laminated cookware N S RACZ 6 Dec 1973 [24 Jan 1973] 56530/73 Heading A4A [Also in Divisions B2 and B3] A cooking utensil 10 comprises a laminar core 32 of oxidizable ferrous material e.g. mild or carbon steel sandwiched between sheets 33, 34 of porefree rolled non-ferrous metal e.g. aluminium or aluminium alloy pressure bonded directly to the core. Sheets 33, 34 are each at least 35 microns thick and up to 10% of the thickness of the core 32. Sheets 33, 34 are anodic relative to core 32. The roll plated, clad or otherwise pressure bonded laminate is stamped, press drawn or otherwise cold flow formed into the finished shape. Before or after forming either or both of sheets 33, 34 may be polished or, to provide a coating key, acid pickled or blasted. The interior of container 12 and cover 14 may be polytetrafluoroethylene i.e. halopolymer coated and the exterior polished or covered by an inorganic material at least 500‹C e.g. enamelled. To seal the sheared edge 36, a drawing wheel W is urged upwardly against the upper edge 38 of sheet 33 to draw the sheet in the direction of arrow D whereupon edge 38 is rolled or folded over edge 36 to be joined to sheet 34, sheet 33 being more ductile than the core which is not deformed. The Specification compares roll plated laminated utensils with hot dip aluminized steel ones and mild steel/stainless steel laminates regarding the ease of forming, polishing, surface preparing and coating. Examples of enamelling and PTFE coating processes are described.
Patent GB-1407705-A (GB)
Title: Recovery of metal catalyst
IPC: C07C51/48
Filed: 1972-12-08
Abstract: 1407705 Recovering cobalt and manganese STANDARD OIL CO 8 Dec 1972 [10 Dec 1971] 56735/72 Heading C1A [Also in Division C2] Cobalt and/or manganese are recovered from catalyst residues also containing iron and which result from the production of aromatic carboxylic acids by (1) extracting the residue with dilute sulphuric acid at a temperature of at least 120‹ F., (2) separating the extract solution from insoluble materials, (3) adding ammonium, an alkali metal or an alkaline earth metal hydroxide to the extract to decrease its pH to 5À0 to 5À5 whereby iron hydroxide is precipitated. (4) separating the iron precipitate from the extract, (5) adding an alkali metal carbonate or bicarbonate to the resulting extract to increase its pH to at least 8À0 whereby cobalt and/or manganese carbonate is precipitated and (6) separating these carbonates from the mother liquor.
Patent GB-1454497-A (GB)
Title: Apparatus for reproducing recorded information
IPC: G11B3/38
Filed: 1972-12-08
Abstract: 1454497 Radial tracking arm EMI Ltd 3 Dec 1973 [8 Dec 1972] 56758/72 Heading G5R In a gramophone in which a driven carriage 1 guides a stylus 16 along a radial path 18 on record 19, a self compensating arrangement is provided to ensure the carriage is driven at the same speed as the stylus moves along its radial path. The stylus is supported on a T-shaped pick up arm 2 which is pivotally mounted 3 on carriage 1. The carriage is driven along a linear path by belt 5 passing over a pair of oppositely directed frusto-conical drums 6, 7, at least one of which is driven. The pick up arm has a pair of arms 9, 10 having slotted turned down ends 11, 12 which engage the belt. Should the speed of movement of the stylus drop below that of the carriage the pick up arm pivots anti-clockwise whereby the arms 9, 10 exert a side pressure on the belt to move this to a lesser diameter part of the conical drums thus reducing the speed of the carriage. The converse happens when the speed of movement of the stylus is greater than that of the carriage. A photo-electric playback and pick up position detector arrangement is also described.
Patent GB-1164047-A (GB)
Title: A Magnetic Material having Square Hysteresis Loop Characteristic and a Memory Core made of the same
IPC: C04B35/26
Filed: 1967-12-14
Abstract: 1,164,047. Magnetic compositions. HITACHI Ltd. 14 Dec., 1967 [28 Dec., 1966], No. 56933/67. Heading H1H. A magnetic material having the composition 15À2-16À7 mole per cent Li 2 O 65À8-83À3 mole per cent Fe 2 O 3  0-18 mole per cent one or more oxides of Mn, Mg, Ni, Zn, Cu and V also contains 0À1-4 wt. per cent one or more rare earth oxides, e.g. La 2 O 3 , CeO 2 , Gd 2 O 2 , Dy 2 O 3 , Er 2 O 3 , Tm 2 O 3 , CeO 2  + Tb 4 O 7 , or CeO 2  + Tb 4 O 7  + Gd 2 O 3 . Exemplified ferrites are Li ferrite alone, or with MnO or MnO + V 2 O s . The material may be made by mixing the oxides or compounds, e.g. carbonates, oxalates, or nitrates, grinding, calcining at 850‹ C. in air, grinding in EtOH, shaping into toroids directly or adding polyvinyl alcohol, granulating by spray drying, and shaping toroids from the granules, sintering at 1090-1120‹ C. in O 2 , and cooling at 2‹ C./min. in O 2 . The rare earth oxide or compound may be added to the initial mix or after calcining. Graphs are given showing the variation of Br/Bm (which is # 0.85), H c  (# 6.50e) and B for increasing per cent of the various rare earth oxides, and showing the memory characteristics (dv 1 , dv 0 , Ts and Tp) for further samples.
Patent GB-1325514-A (GB)
Title: Dispensing valve
IPC: A47J31/46
Filed: 1971-12-08
Abstract: 1325514 Valves J J BOOTH 8 Dec 1971 [11 Dec 1970] 57016/71 Heading F2V In a valve for dispensing a variety of flavoured syrup-carbonated water mixtures having a plurality of water valves, as 34, and a plurality of corresponding normally closed syrup valves, as 74, the water valves are actuated by a push button, as 58 and back-pressure is generated in the chamber, as 44 and operates through the passageway, as 98, to move the rod as 94 and hence the closure member as 90 out of engagement with the seat of the syrup valve to dispense syrup through the aperture as 76 to mix with the water in the nozzle 40. The body comprises three parts 14, 16 and 18 of plastics or metal with gaskets 20, 22 sealing the interfaces. The closure members 50, 90, of valves 34, 74 respectively are integral with the gasket 22 through resilient ribs 52, 92. Rod 94 and rod 54 are held in cups 96, 56 integral with gasket 20. The water passageways extend through the valve body from a common water inlet to a common water outlet.
Patent GB-1367086-A (GB)
Title: Method for the preparation of a flooring surface
IPC: C08G18/28
Filed: 1970-12-03
Abstract: 1367086 Artificial stone IMPERIAL CHEMICAL INDUSTRIES Ltd 10 Nov 1971 [3 Dec 1970] 57504/70 Heading C1H [Also in Division C3] Non-foaming compositions used for the preparation of flooring surfaces comprise (a) a resin-forming component selected from (i) isocyanate group-containing polyurethane prepolymers and (ii) organic polyisocyanates plus organic isocyanate-reactive compounds, (b) water, (c) an alkaline compound of a Group I metal which compound is sufficiently alkaline to absorb carbon dioxide under the conditions prevailing in the composition and (d) a filler. Solvents, bitumens and catalysts may be included in the compositions. In the preparation of the composition, water having the alkaline compound dissolved in it may be adsorbed on to the filler which is then blended with the remaining components. The alkaline compound (c) is preferably a soium compound, e.g. sodium carbonate or sodium hydroxide. In examples the fillers used are fine sand and a graded coloured stone aggregate.
Patent GB-1237478-A (GB)
Title: Apparatus for feeding and shelling cashew nuts
IPC: A23N5/00
Filed: 1969-11-28
Abstract: 1,237,478. Shelling cashew nuts. OLTREMARE INDUSTRIA PRODOTTI ALIMENTARI E DERIVATI S.p.A. 28 Nov., 1969 [29 Nov., 1968], No. 58420/69. Heading A2Q. [Also in Division B8] In a machine for shelling cashew nuts, the nuts N are first elevated from a hopper (T, Fig. 2, not shown) by brackets 84 carried by endless chains 79, each bracket having a pair of support members 85 and a retaining lug at one side to hold the nut N<SP>1</SP> firmly while arms 87, reciprocated in synchronism with the conveyer chains, sweep any additional nut N<SP>11</SP> from each bracket during conveyance; the nuts are then discharged into shoots 60, Fig. 5, which contain fixed and moving blades 64, 61 respectively, the latter being oscillated about pivots 59 by a cam 48 and linkage 55-63, to cause the nuts to be oriented into positions in which their flat sides are arranged in the direction of feed of pushers 67 carried by horizontal feed chains 66; nuts which do not have their convex ridge portions uppermost are then turned, as illustrated by the sequential positions of the nut N in Fig. 7, by co-operation with a recess 99 in the base portion of each of three feeding channels, each base portion having sloping sides which engage the lobes G, G<SP>1</SP> of a correctly positioned nut so that such nut does not fall into the recess, whereby all nuts arrive at a discharge ledge 101 in the position there shown; the nuts from each channel are then in turn received in clamping jaws P which are reciprocated between the level of the feed channel and a lower level, where push rods 43 on a reciprocating slide 42 push the nuts horizontally into shelling blocks 37 which in turn are reciprocated horizontally between a position where they each receive a nut and a shelling position; and finally the nuts are shelled, as described in Specification 1,032,594, by pairs of cutter blades 19, 26 which are moved towards each other in slots in the shelling blocks to cut through the outer nut shell and into the inner nut shell, shelling being completed, upon subsequent withdrawal of the shelling blocks, by effecting relative twisting of the cutter blades, this being effected as shown by a cam projection 9, an a sprocket wheel 7, acting through linkage 32, 30 on crank arms 29 secured to shafts 28 on which the blades 26 are mounted. The sprocket wheel 7 is driven by a motor 1 and drives the whole machine via shafts 8, 46 and 76, shaft 8 carrying cams 11, 12, for reciprocating the slide 42 and a slide carrying the shelling blocks, respectively, and cams 10, 13 for reciprocating slides 18, 25 carrying respectively the fixed and rotatable cutter blades, whilst shafts 46 and 76 carry the drive sprockets 49, 78 for the horizontal chains 66 and elevating chains 79, respectively, shaft 46 additionally carrying the cam 48 and a cam 47 for reciprocating a slide 54 carrying the clamping jaws P.
Patent GB-1340682-A (GB)
Title: Apparatus for and method of manufacturing white portland cement clinker
IPC: C04B7/43
Filed: 1970-12-10
Abstract: 1340682 Shaft furnace USS ENGS & CONSULTANTS Inc 10 Dec 1970 [18 Dec 1969] 58800/70 Heading F4B In a shaft furnace for the production of white Portland cement, raw material fed to the top of a shaft 12 is heated and dried in a zone Z D , calcined in a zone Z c  and reacted with reducing gases in a zone Z R . The reducing gases are supplied by combustion chambers 34 through tuyeres 40 and leave the heating and drying zone Z D  with a reducing composition which is measured and used to control the fuel supply to the burners 46. Below the tuyeres 40 the cement passes to a downwardly tapered section of the shaft so that the reducing gas does not pass downwardly. A divider 18 in the tapered shaft section has a cooling gas plenum 20 below it. Gas from the top of the shaft 12 is fed to the plenum 20 and passes through entry louvres 24 and exit louvres 26 to cool the cement in two shafts which reunite to form a discharge zone which is sealed from the atmosphere. The gases from the cooling zone are used to preheat the combustion air for the burners 46. The combustion air fan 52 is regulated to provide the desired quantity and temperature of reducing gas at the tuyeres. The drying and calcining of the raw material may take place in a separate kiln. In this case the gas leaving the reaction zone may be water cooled before it is fed to the cooling zone.
Patent GB-1459776-A (GB)
Title: Electromagnetic coupling having an end mounted field coil
IPC: H02K49/02
Filed: 1973-12-19
Abstract: 1459776 Electromagnetic coupling EATON CORP 19 Dec 1973 [22 Dec 1972] 58861/73 Heading H2A An electromagnetic coupling comprises a housing 22 having an end cover 26 formed with an annular cavity 41 containing a field coil 28 which electromagnetically couples an eddy current drum 42 mounted inside the housing and a rotor 44 mounted on an output shaft 32. The end cover 26 is made of magnetically conductive material and forms part of the magnetic circuit of coil 28. In the arrangement shown, the eddy current drum 42 is mounted on a hollow shaft 30 driven by electric motor 12 and carrying impeller blades 46 for drawing cooling air through the machine. Coolant is admitted through apertures 50 and also through a duct 61, Fig. 2 (not shown) which passes through end cover 26 to communicate with cavity 41.
Patent GB-1272138-A (GB)
Title: Communications system
Inventor: KAMEN IRA
IPC: H04J1/06
Filed: 1969-12-03
Abstract: 1,272,138. Television; wired broadcasting. EDUCASTING SYSTEMS Inc. 3 Dec., 1969, No. 59019/69. Headings H4F and H4R. A television communication system comprises a receiver located at the transmitting site which derives synchronization signals from a selected television broadcast station, these synchronization signals are used to synchronize the camera 120, Fig. 5, at the transmitting site, and the horizontal synchronizing signals are frequency shifted from 15À75 kc. to form a video pilot signal at 15À7502 kc. and used to sample the video output of the camera (blocking oscillator 126, boxcar detector 24). This sampled video signal is then applied to phase modulator 118 where it phase modulates a 31À5004 kc. signal obtained by doubling 116 the video pilot signal frequency. The phase modulated video carrier E13 and the video pilot signal EV are transmitted over a transmission line to the receiving site where they are separated, Fig. 6, the pilot signal being phase shifted 130 for picture centering and applied to trigger a blocking oscillator 132 which produces onequarter microsecond pulses (as does blocking oscillator 126 at the transmitting site) which are coupled through modulating resistor 136 to a video display, the amplitude of these pulses being limited by diode 135 which locks the pulses to the level of the phase modulated video carrier E13. The video display at the receiving site is also synchronized by synchronization signals separated from the selected broadcast station, so that the sampled video signal is  displayed as a slow scan image wherein the lines of dots appear to sweep across the face of the receiver every five seconds (i.e. the rate at which the phase of the pilot signal is shifted to produce the frequency shift). At the transmitting site a plurality of audio signals, e.g. four, may be multiplexed by providing four single sideband audio modulated subcarrier signals at 40, 50, 60 and 70 kc., and these may be transmitted over the transmission line with the low frequency sampled video signal, the video pilot signal and an audio pilot at 60 kc. Any number of audio and video signals may be transmitted. The audio multiplexing and demodulating arrangements are described with reference to Figs. 2 and 3 (not shown) and the video pilot signal frequency shifting arrangement with respect to Fig. 4 (not shown).