baber/WOPTO huggingface dataset:
Patent GB-1450725-A (GB)
Title: Self-adjusting brake mechanism
IPC: F16D65/22
Filed: 1973-10-10
Abstract: 1450725 Internal shoe drum brakes; actuating and slack-adjusting EATON CORP 10 Oct 1973 [10 Oct 1972] 47325/73 Heading F2E A braking mechanism, intended for use in a brake assembly of the type including a pair of brake shoes 12, 14, Fig. 1, each having a first end 30, 32, the first ends being opposite to each other, a brake drum (not shown) and means 40, 44, 45 supporting the shoes for movement from an initial position into contact with the drum, comprises actuator means including respective tine surfaces 128, Fig. 3, each tine surface being adapted to be operatively engaged with the first end 30 or 32, Fig. 1, of one of the shoes for effecting a first movement of the shoes towards the drum, and adjuster means 53, 54, operative concurrently with the actuator means, engaged with the respective tine surface 128, and engageable with the first end 30, 32 of one of the shoes 12, 14, for effecting a second, further, movement of the shoes towards the drum after the actuator means have moved the shoes beyond a predetermined distance towards the drum. As shown, each adjuster means 53 or 54 includes two parts having threaded engagement, and a pawl, e.g. 166, Fig. 3, partially rotates one of the parts by means of a ratchet, e.g. 78 on it in order to increase the overall length, when the degree of brake shoe lining wear makes this necessary. Also as shown, each tine surface is provided on one of two tines 122 and the tines are pivoted to a yoke 114 engaged by the push rod 102 of an air motor 96, Fig. 2. A pin 178 on the yoke serves to move the pawls 166 (after movement of the tines) by means of respective torsion springs 146, 148. When wear is insufficient for adjustment, end 172 of each pawl merely slides along a tooth of its associated ratchet.
Patent GB-1098630-A (GB)
Title: Apparatus and method for forming concrete planks or slabs
Inventor: KINNARD CLAIBORNE H
IPC: B28B3/20
Filed: 1965-11-09
Abstract: 1,098,630. Moulding concrete. SPAN DECK Inc. Nov. 9, 1965, No. 47417/65. Heading B5A. [Also in Division E1] A concrete building element having a heat and sound insulating core is made by first laying and consolidating a layer 21 of a " dry " concrete mix on a longitudinally extending casting bed (33) Figs. 1, 2 (not shown), laying reinforcing rods (31) therein and pre-tensioned cables (30) thereover and then continuously depositing therein vermiculite from a hopper 87 and a " wet " concrete mix from a hopper 89, both hoppers being mounted on a frame 84 movable on wheels 86. A downwardly depending portion 110 of hopper 87 opens into the forward end of a core mould 88 which comprises only a front wall 106, side walls 105 and a top wall 104 which slopes downwardly rearwardly. The rearwardly disposed hopper 89 deposits the wet concrete from a shoot 117 on to the top and sides of the core mould, so that as the frame 84 moves the layer of vermiculite from the interior of the core mould is surrounded by the wet concrete. A treble cord plank (20), Figs. 13, 14 is formed by disposing three core moulds longitudinally in parallel, the vermiculite and wet concrete being distributed evenly thereto. A shoe 131 and a screed (96), Fig. 6, smooth the " wet " concrete as the frame passes the concrete being distributed evenly by a vibrator 134 carried by a pulley driven eccentrically weighted shaft. The frame 84 is removed when it has travelled the length of the bed 33, the inset plank then being cured for 12-15 hours by lowering thereover a hood (149) which is filled with steam from pipes 152. After curing the pre-tensioned cables are cut and the plank is cut into suitable lengths using a diamond saw (154), Fig. 12 (not shown). The core may be removed to give hollow planks, and " wet " concrete may be used for the base layer 21. A series of planks may then be transversely joined to form floors. In a further embodiment for making a single cored slab, Figs. 16-18 (not shown) a simplified apparatus is described in which the vermiculite and " wet " cement hoppers (217), (215) respectively are combined. In both embodiments a "dry" concrete mix comprises 820 lb. of expanded shale, 188 lb. of cement and sufficient water to bring the mix to a damp, slightly sticky but still granular consistency; a wet" mix comprises 730 1b. of # inch - # inch limestone, 730 lb. of  inch dust expanded shale, 517 1b. of cement and sufficient water to give a 6 inch slurry. The density of the " dry " mix is about 65 1b./cu. foot, and the '' wet " 110 1b./cu. foot or more, the latter having a 28 day strength of 5000 p.s.i.
Patent GB-1320766-A (GB)
Title: Rocket propulsion system
IPC: F02K9/48
Filed: 1970-10-06
Abstract: 1320766 Rocket engines; supply of propellants MASCHINENFABRIK AUGSBURG-NURNBERG AG 6 Oct 1970 [7 Oct 1969] 47555/70 Addition to 1210601 Heading FIT The invention relates to a rocket propulsion system and is a modification or improvement in the invention of parent Specification 1210601. The system comprises a turbine connected to receive, on ignition, one of the propellants in its gaseous form before this propellant reaches the injection nozzle means, the turbine being arranged to drive a propellant supply pump. In the embodiment shown two propellant tanks 14, 19 are provided, the tanks being insulated and the propellants such as hydrogen and oxygen being stored in liquefied form. The system comprises also a combustion chamber and propulsion nozzle assembly 1, 2 there being passages 8, 9 in the walls thereof for flow of propellants for cooling purposes. At starting propellants flows through lines 69, 70 which are uninsulated so that the liquid propellants are vapourized and pass through non-return valves 61, 62 to lines 71, 72 thence through passages 9, 8, all respectively, in the walls of the combustion chamber and nozzle assembly, then passing to turbines 67, 68 to drive them. The propellants discharge from the turbines 67, 68 through lines 73, 74 and pass through valves 4, 5 and nozzles 6, 7 into the combustion chamber. The turbines 67, 68 drive propellant pumps 65, 66 which in normal operation receive liquid propellants through lines 75, 76 and valves 63, 64, the pumps discharging the propellants through lines 77, 78 into the lines 71, 72 and so to the coolant passages 9, 8, turbines 67, 68 and so into the combustion chamber.
Patent GB-1458246-A (GB)
Title: Process for the manufacture of aminoplast and phenoplast moulding compositions using a fluidised bed drier
IPC: C08L61/04
Filed: 1974-11-05
Abstract: 1458246 Moulding compositions dried in a fluidized bed CIBA-GEIGY AG 5 Nov 1974 [5 Nov 1973] 47846/74 Heading C3R A moulding composition is prepared by spraying an aqueous solution of a urea-, melamine-, phenol/melamine- or phenol-formaldehyde resin on to fillers in a fluidized bed drier at a temperature at which the resin does not fuse completely. Preferred solutions contain 50-75% resin solids and have a water compatibility of 1 : 1À2 -3À5. The particles drawn off desirably contain 5% residual moisture and may be used directly for moulding or can be warm-densified in a screw extruder then granulated for injection moulding or ground for compression moulding. In the examples syrups of an MF resin (M : F ratio 1 : 1À6), a PMF resin (P : M: F ratio 0À2 : 1 : 2À5), and a UF resin (U : F ratio 1 : 1À5), are sprayed on to fillers comprising cellulose powder with BaSO 4 , lithopone or ZnO and zinc stearate and a blue pigment in a fluidized bed; the resulting granules are extruded and chopped to 4 mm. dimensions.
Patent GB-1163468-A (GB)
Title: Variable Reluctance Type Pick-up
Inventor: IGA ATSUSHI
IPC: H04R11/12
Filed: 1967-10-20
Abstract: 1,163,468. Stereophonic pick-ups. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. 20 Oct., 1967 [20 Oct., 1966], No. 47862/67. Heading H4J. A stereophonic gramophone pick-up comprises a permanent magnet 15 (Figs. 1, 2, 3, 5), a first series connected pair of coils 9, 10 wound upon opposed limbs combined with a first member 13 and magnetically coupled with one pole of the magnet 15, and a second series connected pair of coils 11, 12 wound upon opposed limbs combined with a second member 14 and magnetically coupled with the other pole of the magnet 15. An armature 3 establishes flux paths between polepieces 20, 21, 22, 23 terminating the limbs 5, 6, 7, 8. The armature 3 is movable in a first plane in relation to poles 20, 21 so as differentially to vary the fluxes linking the coils 9, 10 and in a second plane in relation to poles 22, 23 so as differentially to vary the fluxes linking the coils 11, 12. The armature 3 may be square (Fig. 2), cross-shaped (Fig. 3) or elongate (Fig. 5). The armature 3 is connected to a stylus 1 through a shank 2 of aluminium, magnesium, beryllium, or an alloy of two or more of these metals. The armature 3 may be of permalloy or " Mumetal " (Trade Mark) and is supported by an elastic member 4 fixed to a casing (17a, 17b), Figs. 4, 6 (not shown), to move freely in the air gap. In its neutral position the distance between the armature 3 and poles 20, 21, 22, 23 is shorter than that between two adjacent poles of opposite polarity to prevent leakage of flux from the armature 3. For the embodiment of Fig. 5 a support (19), Fig. 6 (not shown) of organic resin is formed with a recess for holding a readily replaceable frame 28 in which the armature 3, together with the stylus 1, shank 2 and the elastic member 4 is inserted.
Patent GB-979778-A (GB)
Title: Process for the preparation of bicycloheptadiene dimers and/or trimers
IPC: C10L1/04
Filed: 1962-12-21
Abstract: Dimers and trimers of bicycloheptadiene are obtained by contacting the monomer with a complex of a metal of Group IB or VIII in a valency state below 2 complexed with an electron-yielding organic compound.  Suitable conditions are 0-200 DEG  C. and 1-5 atmospheres; an inert solvent may be used, particularly bicycloheptadiene or the product.  The organic ligand of the catalyst may be bicycloheptadiene or a dimer or trimer thereof, an olefin, acrylonitrile and/or a triarylphosphine; carbonyl groups may also be present.  The catalyst may be formed from a soluble compound of the metal, the electron yielding complexing agent and a reducing agent such as a trialkyl or alkoxydialkyl aluminium.  The product may be hydrogenated in the presence of Raney nickel and before or after hydrogenation may be used as fuels for rockets.
Patent GB-1333285-A (GB)
Title: Method for diffusion bonding
IPC: B23K35/32
Filed: 1971-10-18
Abstract: 1333285 Welding by pressure UNITED AIRCRAFT CORP 18 Oct 1971 [28 Dec 1970] 48388/71 Heading B3R In bonding two metal surfaces an alloy layer compatible with the surfaces is sandwiched between them and the surfaces are pressed together to cause flow of the alloy layer, heated to be in a condition of superplasticity, to fill voids between the surfaces and the surfaces are diffusion bonded together. Titanium alloys suitable to provide the layer are alpha-beta alloys, containing Al, Mo and Ti possibly with V. Other alloys containing Al, Sn, Zr, Mo and Ti or Al, V, Sn and Ti may be used as well as stable alpha titanium alloys or metastable beta alloys. A sheet of the suitable alloy is sandwiched between cleaned surfaces to be bonded which may be of titanium alloy and bonding is effected in vacuo or inert gas. Heat and pressure may be simultaneously or sequentially applied. In some cases a final heat treatment to rid the product of all superplasticity is necessary.
Patent GB-975777-A (GB)
Title: Control systems for conveyors
IPC: B65G43/10
Filed: 1962-12-24
Abstract: 975,777. Endless conveyers. STAMICARBON N.V. Dec. 24, 1962 [Dec. 22, 1961], No. 48585/62. Heading B8A. Endless conveyer belts A, B, C, D, E, F may be started in sequence as the result of signals of different frequencies transmitted on common circuit 9 (Fig. 3). A starting switch 31 (Fig. 3) of a main control box 39, starts a driving motor (not shown) of the belt A by means of a relay 48. This results in a contact 50 being closed and this energizes a transmitter 7. Thus a signal of given frequency is transmitted on the circuit 9. A receiver 10 of a control box 40 (bottom half of Fig. 3) associated with the conveyer B responds to this signal (none of the receivers 10 of the control boxes 40 respective to conveyers 3-6 responds to the signal). A motor-starting relay 48 is thereby energized to start the driving motor of the endless conveyer belt B. The starting of the conveyer B results in the operation of a contact-breaker 19 driven from a roller 44 coacting with the belt B. This has the effect of periodically interrupting the signal of a transmitter 11 to which only a receiver 12 in the control box 39 responds. Thus a signal light 26 operates periodically and indicates whether the belt B is operating and also indicates the existence of belt slip. A timing mechanism operates in conjunction with the contact breaker so as to actuate a cut-out switch for the belt if slip should exceed a certain amount. Starting of the belt B also closes a contact 53 so as to energize a transmitter 8 in the control box 40. A signal of such frequency as to activate a receiver in the control box 40 of the belt C, is thereby fed to the line 9, and so on. If a transmitter or receiver of one of the belts B-F is defective, the main switch 35 of the corresponding control box is placed in its upper position (i.e. the position shown in Fig. 3-for normal automatic working as described above, the switch 35 is in its lower position). The transmitter 11 is thus energized continuously (instead of periodically due to the contact breaker 19). The belt at the defective station is manually controlled by a switch 33 while the upstream belts are controlled by the switch box of the next belt upstream. The downstream belts are controlled as before by the control box 39. All the belts may be controlled manually by lifting a switch 34 of the control box 39 to an " up " position (this is shown in the " down " position in Fig. 3). Undue accumulation of coal on any conveyer operates a cut-out switch 42 which may be operated by electrical capacity.
Patent GB-1240458-A (GB)
Title: Improvements in or relating to drying chambers
Inventor: MCGEE ROBERT
IPC: D06C7/00
Filed: 1967-10-26
Abstract: 1,240,458. Drying apparatus. VITAFOAM Ltd. 8 Jan., 1969 [26 Oct., 1967], No. 48639/67. Heading F4G. In drying or curing material (e.g. polyurethane) in moulds 14, the moulds 14 are conveyed through the chamber 10 in which the material is dried or cured by hot air jets issuing from adjustable nozzles 19 mounted on tubes 18 extending along the chamber 10, the air being heated in chamber 15, e.g. by a gas burner, and supplied therefrom to the nozzles 19 by fan 16 and being returned from chamber 10 to the chamber 15 for recirculation.
Patent GB-1394260-A (GB)
Title: Esters of alpha-tocopherol
IPC: C07D311/72
Filed: 1972-10-24
Abstract: 1394260 Tocopherol esters IMPERIAL CHEMICAL INDUSTRIES Ltd 11 Oct 1973 [24 Oct 1972] 48929/72 Heading C2V The invention comprises an ester of an α- tocopherol with an acid of the formula wherein R<SP>2</SP> and R<SP>3</SP> are both methyl radicals and R<SP>1</SP> is a p-chlorophenyl, 4-p-chlorophenyl) benzyl, 4-(p-chlorophenyl)-phenyl or 4-(1,2,3,4-tetrahydronaphth-1-yl)phenyl radical; or R<SP>2</SP> is hydrogen, R<SP>3</SP> is a p-chlorophenoxy radical and R<SP>1</SP> is a p-chlorophenyl radical; or R<SP>2</SP> is hydrogen, R<SP>3</SP> is a p-chlorophenyl radical and R<SP>1</SP> is a m-trifluoromethylphenyl radical. The esters are obtained by esterifying an α-tocopherol with the acid or a reactive derivative of the acid. In examples DL-α-tocopherol and D-α-tocopherol are reacted with 2-(4-chlorophenoxy)-2-methylpropionyl chloride, 2 - (4 - (4 - chlorophenyl) benzyloxy)-2-methylpropionyl chloride, 2-(4-(4- chlorophenyl) phenoxy) - 2 - methypropionyl chloride, DL-2-(4-(1,2,3,4-tetrahydronaphth-1- yl) phenoxy)-2-methylpropionyl chloride, DL- 2 - (3 - trifluoromethylphenoxy)- 2 - (4 - chlorophenyl) acetyl chloride, bis (4-chlorophenoxy)- acetyl chloride and 2-(4-chlorophenoxy)-2- methylpropionic acid anhydride.
Patent GB-1456194-A (GB)
Title: Production of ferrous bodies
IPC: C23C16/01
Filed: 1972-10-26
Abstract: 1456194 Making tubing BRITISH STEEL CORP 28 Jan 1974 [26 Oct 1972] 49445/72 Heading B3A [Also in Divisions C1 and C7] Iron tubing is made by passing ferric or ferrous chloride gas and a reducing gas, e.g. hydrogen through passages 22, 25 to a venturi jet 31 disposed within a hollow graphite former 23 heated by R.F. coil 24. Chamber 21 surrounding the former 23 is maintained at 600-700‹ C., optionally at superatmospheric pressure so that iron deposits on the former to provide a tube which is withdrawn by mechanism 28 through annular seal 21, the operation commencing with the aid of starter tube 26.
Patent GB-1256376-A (GB)
Title: Improved process and apparatus for the drawing of a thermoplastic product
Inventor: SEMPEL HENDRINUS
IPC: D02J1/22
Filed: 1969-10-08
Abstract: 1,256,376. Apparatus for drawing thermoplastic products. ALGEMENE KUNSTZIJDE UNIE N.V. 8 Oct., 1969 [8 Oct., 1968], No. 49543/69. Heading B5B. A process for the drawing of a thermoplastic thread-shaped or ribbon-shaped product in a drawing zone between the point of arrival of the product on a feed roll and a draw roll which is driven at a circumferential speed that is higher than that of the feed roll, which process comprises the steps of feeding the product to the drawing zone, subjecting it to a first draw between the feed roll and at least one friction member in slipping contact with the product, localizing the drawing point as hereinbefore defined in the zone between the feed roll and the friction member, subjecting the thread to a second draw between the friction member and the draw roll, and discharging the drawn product from the drawing zone. In particular the process comprises feeding the thread to a driven feed roll 2, subjecting the thread to a first draw, feeding the thread to at least one friction member 4 over which the fibre slips, subjecting the thread to a second draw by feeding the thread to a draw roll 6 which is driven at a circumferential speed higher than that of the feed roll. The process may be used for linear polyester especially polyethylene terephthalate and linear polyamides especially nylon 6. The first draw may begin on the feed roll. The drawing point which is the point of maximum decrease in denier or drawing may be localized by continuously adjusting the temperature of a heatable zone, such as a feed roll, immediately prior to the drawing point. The friction member may be rotary or stationary through which liquid may be passed for controlling its temperature. The process may be used for spin drawing especially of polyethylene terephthalate when the driven friction member is heated to a higher temperature than the heated feed roll, the temperatures preferably being in the ranges 180 to 225 C. and 65 to 90 C. respectively. The frictional member and the feed roll may have matt chromium plated surfaces. In Fig. 3 for spin drawing nylon 6 the fibres are subjected to a relaxation process after the stretching by passing the fibres over rolls 12 and 13 which have a slower peripheral speed than the draw roll 6.
Patent GB-1328220-A (GB)
Title: Collapsible umbrella
IPC: A45B19/10
Filed: 1970-10-19
Abstract: 1328220 Collapsible umbrellas KORTENBACH & RAUH 27 April 1971 [8 May 1970] 11632/71 Heading A4P An umbrella comprises a three-part telescopic stick 1 main slider 8 auxiliary slider 10, main struts 9 auxiliary struts 11, and shorterable ribs 3 each having an outermost part 3c pivoted at 5 to a middle part 3b slidable within an inermost part 3a and has means to prevent full extension of the ribs when the umbrella is closed. The vizer ends of rib parts 3b are fixed to huges 4 which slide on U-sectioned parts 3a and abut against collars 6 when the umbrella is opened. In a manually operable first  embodiment, Figs.1, 2 (not shown) a stop (15) on the stick prevents downward movement of slider 10, which is above slider 8, when the umbrella is closed, so preventing full ribextension. The slider 8 has a longitudinal groove allowing it to ride over stop (15). In a manually operable second embodiment, Figs. 3, 4 (not shown) one or two cords (16) between the crown 2 and slider 10, having a length less than the maximum length of travel of sections 3 b during extension, prevent full rib-extension when the umbrella is closed. In an automatically opening third embodiment wherein slider 8 is above slider 10 and an opening spring 14 is provided therebetween, one or two wires 17 extend from the crown 2 and have hooked ends 17a cooperating with pins 18 in U-section struts 9 when the umbrella is closed, to prevent full rib-extension. In an automatically opening fourth embodiment, Figs.8-10 (not shown) such full extension is prevented by one or two struts (20) each of which is pivoted to a strut 9 and to a member (19) sliding on a rib part 3a between a sliding hinge 4 and collar 6. When collapsed, the first embodiment may have a rectangular cross-section and the other embodiments may have a circular cross-section.
Patent GB-1154000-A (GB)
Title: Improvements relating to Rotary Chucks
Inventor: WIGGINS DONALD LINGWOOD
IPC: B23B31/20
Filed: 1965-11-23
Abstract: 1,154,000. Chucks. DOWDING & DOLL Ltd. 16 Nov., 1966 [23 Nov., 1965], No. 49716/65. Heading B3B. In a chuck of the kind having jaws which are closed by spring pressure and opened by air pressure supplied from a stationary cover-plate, the cover-plate houses an annular piston which is axially movable into and out of sealing engagement with the rotatable body part of the chuck in order to make and break the air supply connection as required and to allow the chuck body to rotate without any frictional contact with the stationary cover-plate. In a collet chuck having a stationary cover-plate 1 housing an annular piston 5, the rotatable body part 3 of the chuck carries a collet 16 which is closed by the action of spring units 35 acting on a slidable piston member 20 which transmits axial movement through balls 29 to a collet liner 17 the collet 16 itself being prevented from moving axially by a nut 38. When the chuck is stationary air supplied to the cover-plate 1 causes the annular piston to move into sealing engagement with a plate 13 of the chuck and air is then supplied through ducts 10 in the annular piston 5 to the chuck body to force the piston member 20 against the pressure of f springs 35; movement of the member 20 in this direction releases the collet by means of a release block 32. Leaf springs 36 press the annular piston 5 away from the plate 13 when air pressure is released. In an alternative embodiment (Fig. 2, not shown) the collet (50) is axially movable within a stationary collet liner (49) to effect closing of the jaws and movement of the main piston member (59) by spring pressure entails a camming action on an annular series of balls (66) which in turn force a sleeve member (52) in the opposite direction to that of the piston member. A nut (51) screwed to the sleeve member (52) and moving therewith effects the axial movement of the collet to grip the workpiece.
Patent GB-1504139-A (GB)
Title: Water taps or faucets
IPC: F16K5/18
Filed: 1975-05-23
Abstract: 1504139 Valves H & DE WATTS Ltd 23 May 1975 [19 Nov 1974] 49999/74 Heading F2V A valve for use with a sink, washbasin or bath or for use as one of a pair of valves in a mixer fitting has a closure member 9 rotatable between open and closed positions determined by stop means 24 and provided with a cavity to contain a seal 12 which registers with an outlet 7 when the valve is closed. An offset inlet port 4 is controlled by a face 15 on the member 9 and the total pressure drop when the valve is partially open is divided between the inlet and outlet ports to reduce noise. In a second embodiment, the inlet port is arranged centrally and is fitted with a loose-ball non-return valve (28), Fig. 6 (not shown).