baber/WOPTO huggingface dataset:
Patent GB-826122-A (GB)
Title: Improvements in the manufacture of shell moulds and hollow foundry cores
Inventor: PLAYER EDWARD
IPC: B22C11/04
Filed: 1955-03-14
Abstract: 826,122. Moulding-machines. BIRMIDAL DEVELOPMENTS Ltd. March 26, 1956 [March 14, 1955], No. 7336/55. Class 83 (1). Hollow moulds or cores are made by blowing a mixture of sand and a heat-hardenable binder into a box having an inner and an outer former, and heating the surfaces in contact with the mix of both formers to effect curing or hardening of the mould or core, said outer former comprising laterally separable side portions and a base portion which includes ejecting means. In an apparatus for making shell cores for I.C. cylinder engine block castings, the outer former comprises a base portion 6 and separable side portions 7 attached to screwed guide rods 17 rotatable in brackets 28. The box is closed by a removable inner former 8 carried by a swingable arm 11. A sand-blowing magazine 13 is similarly mounted and movable into or out of engagement with the mouth of the core box. Ejecting means 14 are slidable in the base portion 6 and comprise a portion 15 forming a hollow in the core. After blowing, the core box may be heated in an oven, but preferably the box is heated externally or internally by a gas or vapour burner or by electrical resistance heating elements and may be maintained continuously at substantially the required hardening temperature. Vent plugs may be located in either the outer or inner formers. In a modification, a series of boxes are mounted upon a turntable, and move through, e.g. six stations, three of which are hardening stations.
Patent GB-740683-A (GB)
Title: Improvements in and relating to control systems for internal combustion engine-electric power plant
Inventor: JAMES CHARLES EDWYN
IPC: B60L50/11
Filed: 1951-03-30
Abstract: 740,683. Transmitting mechanical power. BRUSH ELECTRICAL ENGINEERING CO., Ltd. May 22, 1952 [March 30, 1951], No. 7374/51. Class 38 (4). In a control system for maintaining constant engine speed and loading in internal-combustion engine-electric power plant, such as used for vehicle propulsion, by automatic control of the regulating rheostat 52 in the field circuit G of the main generator 53, the rheostat is operated by a reversible electric servomotor 43 under the control of a change-over switch 41 having an intermediate " off " position, the switch being operated by a fluid servomotor 36 having a control valve 14 responsive to deviations from a given setting of an engine-driven governor 1. A sleeve valve 22 co-operates with valve 14 and is moved by a cam 20 in accordance with fluidpressure loading applied to the governor, whereby the engine may be controlled to run at any desired speed. The automatic control of the generator is temporarily suspended when the generator attains a voltage at which changeover from series-parallel to full parallel connection of the traction motors is desirable. At this voltage, a relay RL operates to de-energize a contactor TC1 which, at its main contacts, disconnects the slider 51 of rheostat 52 and, at contact TCla completes an energizing circuit for a contactor TC2 which closes its contacts to short-circuit a portion of the rheostat. The resulting generator excitation is such that about 5 per cent overload occurs as parallelling proceeds, so that motor 43 operates the moving element of the rheostat in the " lower voltage " direction, this element eventually operating a contact SE (when adjacent tapping j) and restoring automatic load control by completing a circuit for re-energizing contactor TC1 previously prepared by contact P2c which closed when parallelling was completed. In a modified system, which does not rely on engine overload to retract the moving element of the rheostat, a relay energized in shunt with contactor coil TC2, when parallel connection of the traction motors is complete, completes an auxiliary circuit for energizing motor 43 in the " lower voltage " direction.
Patent GB-477018-A (GB)
Title: An improved process for making light hydrocarbons
IPC: C10G15/00
Filed: 1936-03-11
Abstract: <PICT:0477018/III/1> In a process for the production of hydrocarbons of low boiling point by subjecting oils in vapour form to electric induction action, oils, preheated indirectly by steam, are sprayed with steam or like hydrogenating gases heated to 300 DEG  C. into a container 1, additional hydrogen being supplied through a pipe 2. The oil - steam mixture streams through an adjustable nozzle 3 into a reaction chamber 4 comprising a metal casing 5 the interior of which is insulated by enamelling and contains a laminated solenoid 6 mounted on ceramic blocks 7 through which currents at voltages of 1,000 to 10,000 volts and frequencies of 50--1,000 herz are passed. Catalysts, e.g. metals of low melting point on carriers or liquid catalysts, are disposed within the coil or supplied through a pipe 11.  Solid materials, e.g. coal dust, may be mixed with the oil.  The hydrogenated vapours pass off through a slide valve 8 and may be retreated in a similar chamber. British Specifications 321,910 and 333,241, [both in Class 32]; Canadian Specification 288,706; German Specifications 527,699 and 564,781; and U.S.A. Specifications 1,601,212 and 1,841,363 are referred to.
Patent GB-1480485-A (GB)
Title: Transformer for induction heating equipment
IPC: H01F29/12
Filed: 1975-05-19
Abstract: 1480485 Transformers ELECTROHEATING (LONDON) Ltd 19 May 1975 [19 Feb 1974] 7450/74 Heading HIT [Also in Division H5] A transformer for industrial heating equipment comprises a primary winding of loops 1 and secondary winding of loops 9 of copper tubing through which cooling water is passed by rubber hoses (not shown), the end of each loop being connected to the beginning of the next loop by a copper tube 6, the loops 9 passing between the loops 1 when the secondary winding is rotated about the spindle 18 to vary the output voltage. The numbers of turns may be unequal, and some or all of the loops of one coil may be connected in parallel to give the required turns ratio.
Patent GB-1371943-A (GB)
Title: Method of lap-jointing sheets of natural or synthetic rubber or  plastic material
IPC: B29C65/08
Filed: 1972-02-17
Abstract: 1371943 Seaming non-metallic sheet material CUFFLIN HOLDINGS Ltd 16 Feb 1973 [17 Feb 1972] 7474/72 Heading B5K Two sheets 1, 2 of natural or synthetic rubber or plastics material are lap-jointed by applying adhesive 3 to one or both of the faces to be joined, placing one face over the other face to form a seam, and rolling a vibratory compacting roller over the seam. In one embodiment, Fig. 1, two polychloroprene sheets 1, 2 provided with internal braided reinforcement 8 are laid side-by-side with the sheet 1 overlapping the sheet 2. The sheet I is rolled back and both faces to be joined are brushed by a power wire brush, cleaned and coated with an impact adhesive 3 which is allowed to dry. A second coat of impact adhesive is applied and the sheet 1 rolled forward. The seam is pressed down manually and, if alignment is satisfactory, a vibratory compacting roller is rolled thereover. Preferably, both sides of the joint are covered with neoprene strips (4), (6), Fig. 2 (not shown), which are applied separately by wire brushing, cleaning, coating with two coats of impact adhesive, hand rolled into place and compacted by a vibratory roller. To avoid the formation of a step, before applying the strip (4) or (6), an uncured neoprene mastic filler may be forced into the edge of the joint to form a smooth transition. In a modification, Fig. 3, the edge of the joint is covered by a moulded strip 10 formed with a step 12 and feathered edges. The joint may be used in the manufacture of inflatable tubular formers for casting voids in  concrete.
Patent GB-846286-A (GB)
Title: Improvements in or relating to pianos
IPC: G10C3/04
Filed: 1957-03-06
Abstract: 846,286. Pianofortes. PARENT, L. A. March 6, 1957 [March 12, 1956], No. 7503/57. Class 88 (2). The wrest-plank is replaced by a thickened part 2 of the metal frame 1. Bushes 5, preferably of nylon, are pushed into apertures 3 until their ends abut against shoulders. Tuning pins 4 with multi-start threads are then screwed into the bushes. The sound board and supporting frame are separate from the metal frame 1 whereby assembly is facilitated.
Patent GB-324559-A (GB)
Title: Improved device for the removal of liquid with or without solid particles therein from the surface of rotary drums transporting it, particularly in cooling apparatus
IPC: A23C1/03
Filed: 1929-03-07
Abstract: 324,559. Appareils et Evaporateurs Kestner. Jan. 21, 1929, [Convention date]. Precipitating solids from solutions. - A film of liquid picked up from a tray 3 by a rotary drum 1 is removed by a roller 4 pressed against the drum and a plate 8 pressed against the roller, the surfaces of the roller and plate having a low coefficient of friction. The roller is preferably of rubber or rubber-coated and the plate is preferably of glass. The arrangement is applicable to heating apparatus and to apparatus for cooling salt solutions to separate the salt, which is removed with the liquid.
Patent GB-915037-A (GB)
Title: A process for the production of ª--carotene
Filed: 1961-03-01
Abstract: The Specification comprises 13,14,131,141-tetrahydr - 11,12;111,121 - bis-dehydro-13,131-dihydroxy-b -carotene having the formula:- <FORM:0915037/IV (b)/1> This compound may be obtained as a light orange-coloured oil having lambdamax 285 mm  (e = 44000) by reacting 2 mols of the organometallic compound obtained by dropping 6 - (21,61,61-trimethylcyclohexen-11-yl)-4 methylhexadi-3,5-en-1-yn on to ethyl magnesium bromide with 2 mols of octen-(4)-di-2,7-one at 0 DEG C.  This compound may be converted to b -carotene by 2 methods:- (1) Splitting off water by dissolving in an inert solvent such as benzene, toluene, carbon tetrachloride or a petroleum ether; adding an organic base such as pyridine, quinoline, a dialkyl aniline, N-phenyl morpholine or triethylamine and then heating with PCl5, PBr3, POCl3, SOCl2 or AsCl3 to produce the 11,12;111,121-bis-dihydro-b -carotene which is then partially hydrogenated in the presence of a contaminated noble metal catalyst in an organic solvent, if necessary with isomerisation to produce b -carotene.  (2) Partially hydrogenating the compound with lithium aluminium hydride in ether to give 13,131-dihydroxy-b -carotene and then splitting off water by refluxing in a nitrogen atmosphere in carbon tetrachloride with N-iodosuccinimide to produce b -carotene, which may be converted to the all-trans form by isomerisation if desired.
Patent GB-685506-A (GB)
Title: A safety device for the purpose of breeding and rearing pigs to eight weeks old or thereabouts
IPC: A01K1/02
Filed: 1951-04-02
Abstract: 685,506. Pig-rearing appliances. POULTER, J. Aug. 27, 1951 [April 2, 1951]. No. 7544/51. Class 5 (ii). A pig-rearing appliance comprises a narrow pen, for confining a sow during farrowing, arranged within a sty or other enclosure, the pen having side walls A, B spaced from the ground so that the piglets can freely pass into and out of the pen. The side walls comprise longitudinal bars covered with a corrugated metal lining. The end walls C, D consist of bars forming a framework which includes a door (not shown). The side walls are suspended from the upper and lower frame members by pins passing through holes D<SP>1</SP> in these members, so that the side walls may be moved outwardly as required. The end walls E, F include a trough (Fig. 1, not shown) for feeding the sow. To prevent the piglets becoming trapped between the doorway and the sow, horizontal rails J are provided. A lamp and heater M, which may be thermostatically controlled, is provided in the outer compartment for warming the piglets. The pen may be placed in an outer enclosure Fig. 7 (not shown) built up in sections secured together by batons.
Patent GB-709565-A (GB)
Title: A new or improved crane sling shortener
IPC: B66C1/12
Filed: 1951-04-02
Abstract: 709,565. Lifting slings. LINIKER, T. H. April 2, 1952 [April 2, 1951], No. 7587/51. Class 78 (4) A sling shortener comprises two spaced diverging members 1 and 2 braced by cross pieces 3 and 4 and terminating in a hook 5 at one end and load engaging prongs 8 at the other end. The device is placed against one side of the load and the sling is placed round the load and outside the members 3 and 4. The rope 7 is passed through one end loop 9 of the sling from either below or above, and then the other end loop 6 is connected to the hook 5 thus shortening the length of the sling by nearly half. Alternatively the load engaging prongs may be attached to a cross bar at right angles to which a hook is attached.
Patent GB-508672-A (GB)
Title: Improvements in or relating to stereophonic sound recording
IPC: G11B7/00
Filed: 1939-03-09
Abstract: 508,672. Binaural and directional systems. ELECTRICAL RESEARCH PRODUCTS, Inc. March 9, 1939, No. 7602. Convention date, March 22, 1938. [Class 40 (iv)] In stereophonic sound recording, particularly in connection with talking pictures, two records 74, 75 are first made by means of " close-up " and " distant " microphones respectively, so that one contains mainly direct sound energy and the other mainly reverberant energy, and these records are then reproduced simultaneously over re-recording channels 13, 14 in which the sound currents are combined in adjustable proportions by means of volume controls 78, 79, 22, 23, 26, 27, to produce two records 87, 88 which may be reproduced by spaced loudspeakers to give a desired stereophonic effect. The two records may be side by side on the talking picture film so that both may be scanned by single-channel reprodacing apparatus in theatres not equipped with stereophonic apparatus. The picture record may be projected as a guide to the operator in making the adjustments, and the sound may be produced by spaced loudspeakers 84, 85 fed from the channels 13, 14. Specifications 435,980, 454,161, and 479,083, [Group XXXVIII], are referred to.
Patent GB-903119-A (GB)
Title: Apparatus for collecting samples from freely falling material
IPC: G01N1/20
Filed: 1960-03-03
Abstract: 903,119. Sampling freely falling material. STAMICARBON N.V. March 3, 1960 [March 3, 1959], No. 7617/60. Class 58. Apparatus for collecting a sample from freely falling loose solid and/or liquid material, such as coal, comprises an elongated samplecollecting trough 7 detachably secured, cantilever-wise, to a vertical shaft 6 mounted in bearings on a bracket 1. The shaft carries, at its upper end, a crank 5 connected to a piston actuated, pneumatically, within a cylinder and controlled by a clock mechanism, contained in a cabinet 3, to make, repeatedly, a complete stroke in one direction and then, after a desired time interval, a return stroke, so that the shaft is oscillated and swings the trough to and fro, e.g. in an arc of 180 or 110 degress, through the falling material. The sample may be discharged from the trough, through an outlet 17, by a conveyer driven by a motor 16, e.g. an endless belt conveyer 14 when the material is dry or a scraping conveyer when the material is very wet. In the case of a liquid, the trough is constructed with a base which slopes towards the outlet so that the sample can flow out. The trough may have a symmetrical, roof-like cover 12 pierced by apertures 13 and terminating in a ridge 21. The apertures may be equally spaced apart and their size may increase with their distance from the shaft 6. Alternatively, the apertures may be equal in size and separated by distances inversely proportional to their distances from the shaft 6. In another construction, a longitudinal slot is formed in the cover of the trough, which slot progressively increases in width in the direction leading away from the shaft 6.
Patent GB-622409-A (GB)
Title: Improvements in mechanism for reciprocating the beds of printing machines
IPC: B41F3/58
Filed: 1947-03-20
Abstract: 622,409. Bed - reciprocating apparatus. FURNIVAL & CO., Ltd., and FURNIVAL, F. S. March 20, 1947, No. 7663. [Class 100 (ii)] In a mechanism for reciprocating the bed of a printing-machine, two parallel racks 3 and 4 are spaced apart on the underside of the bed 1 and are engaged by pinions 7 and 8 respectively, which rotate at the same constant surface speed but in opposite directions. The pinions are moved longitudinally on a fixed stud 5 in one direction or the other at the end of each period of constant speed to move the pinion, which has been in engagement with its rack, away therefrom, and to move the other pinion into a position to be engaged by its rack. The pinion 8 is rotatably mounted on the boss of the pinion 7 and is driven by a pinion 10 mounted on a shaft 12 which carries a pinion 11 in mesh with an idler 14 which drives the pinion 7. The upper end of a two-armed lever 16, 17, pivoted on a stud 18, engages the pinion 7, and the lower end carries a roller 19 which engages a cam groove 20 of a cam 21 driven at one half of a revolution for each stroke of the bed 1.
Patent GB-718700-A (GB)
Title: Improvements in or relating to the production of flour
IPC: A21D2/14
Filed: 1951-04-03
Abstract: In order to improve the baking strength of flour being made from a plurality of streams of flour, the streams in which the gluten is of low strength are treated with 15-100 parts per million of formaldehyde, an aqueous solution of formaldehyde or a water-soluble polymer thereof being atomized onto, or a current of hot air carrying formaldehyde vapour being injected into, the moving flour.
Patent GB-550074-A (GB)
Title: Improvements in and relating to floor, wall and like coverings
IPC: B29C59/04
Filed: 1941-06-18
Abstract: 550,074. Rubber mats; securing to floors. RYNER, A. June 18, 1941, No. 7732. [Class 142 (iv)] [Also in Group X] Rubber coverings are formed harder on the upper surface than on the bottom, the flexibility of which is increased by providing cavities or channels 3 to snap over similarly shaped studs in the floor. At the edges partcavities are arranged to be complementary to those in adjoining edges.
Patent GB-250378-A (GB)
Title: Improvements in and relating to the tracks of toy railways
IPC: A63H19/30
Filed: 1925-03-23
Abstract: 250,378. Hornby, F. March 23, 1925. Rails and tracks.-In a toy railway, a sleeper element disposed beneath the track rails and secured thereto, carries one or more bell-crank levers to which the operating rod for the signal gear, switch-point mechanism or the like ia coupled. As shown in Fig. 1, the motion of a rod 2 is transmitted to a rod 3 by two bell-crank levers 1, which are pivotally mounted on a sleeper 5 and are connected by a link 11. The sleeper 5 is secured to the rails 6 by means of cam-members 7 and lugs 10 which are mounted on the sleeper and between which the rails 6 are gripped. By reversing the position of one of the bell-crank levers 1 a pull in the rod 2 is converted into a thrust in the rod 3 or vice versa. In a modification, the sleeper 5 may carry a portion of the track and be connected to the other track members in the usual manner. As shown in Fig. 6, a bell-crank lever 1 is mounted on an extended sleeper 5b and is connected to the switch rail 16 of a switch-point gear by a link 11<a> passing through a slot 19 in the sleeper.
Patent GB-497784-A (GB)
Title: Improvements in and relating to signboards or signs with removable letters capable of being illuminated
IPC: G09F13/26
Filed: 1938-03-17
Abstract: 497,784. Two-part couplings. FAIRBROTHER, H. (Soc. Anon. FonciÞre Industrielle & Commerciale) March 17, 1937, No. 7868. [A Specification was laid open to inspection under Sect. 91 of the Acts, Sept. 20, 1937.] [Class 38 (i)] [Also in Group XVIII] Characters formed by electric discharge lamps A are supported on conductor wires or bars B by hooks C which are connected through resistances R to the electrodes E. In an alternative construction the characters comprise filament lamps, the ends of the filaments being connected to the hooks C.
Patent GB-834884-A (GB)
Title: Improvements in the manufacture of cellulose triacetate filamentary materials
Inventor: GROOMBRIDGE DENIS WILLIAM
IPC: D01F2/28
Filed: 1956-03-14
Abstract: Cellulose triacetate filaments are made by extruding a solution of cellulose triacetate into a liquid coagulant, drawing the filaments so produced through the coagulant at a draw-down ratio below 0.9, and then stretching them by at least 10% of their length while they are still wet with the coagulant.  The draw-down ratio is defined as the ratio between the rate at which the filaments are drawn from the body of the coagulant and the linear speed at which the spinning solution is extruded.  The spinning solvent is preferably acetic acid and the coagulant may then be aqueous acetic acid of concentration not more than 65%, but methylene chloride or ethylene chloride, especially in admixture with up to 12% by volume of a lower aliphatic alcohol (i.e. one containing up to 4 carbon atoms in the molecule), preferably methanol or ethanol, may also be used as solvent, in which case the coagulant is preferably a lower aliphatic alcohol which may be cooled, e.g. to between - 10 DEG  and + 10 DEG  C.  After stretching, the products may be washed free from coagulant, preferably while travelling round a pair of thread-storage, thread-advancing rollers of which the lower is inclined at a small angle to the horizontal and provided with means for applying water or other washing liquid to its surface at or near its higher end.  If a volatile coagulant, e.g. methanol, is used, it may be removed partly or wholly by evaporation, but in this case the yarn should be substantially free from tension during the removal of the coagulant.  Yarns that have been freed from coagulant by washing are preferably dried under conditions such that they can shrink either completely freely or to a controlled degree which is at least 75% of the amount by which they would shrink in the absence of control.  Specification 797,193 is referred to.
Patent GB-1263526-A (GB)
Title: Improvements in the prevention of encrustation in fermentation apparatus and methods of operating same
IPC: B01D19/04
Filed: 1969-02-13
Abstract: 1,263,526. Preventing encrustation and destroying foam in fermentation vessels. PROCESS ENG. CO. S.A. 13 Feb., 1969 [13 Feb., 1968], No. 7974/69. Heading B1M. During a fermentation process in vessel 1 in which foam is broken by rotating plates 3, 4 and 5, and separated gas is discharged between the plates and thence through hollow shaft 2, encrustation by the growth of microorganisms is prevented by introducing gas, steam, or liquid nutrient medium through bore 15 so that it strikes the top of the top of vessel 1, and then flows over plates 3, 4 and 5 in a general direction substantially opposite to that of the gas discharge flow.
Patent GB-256522-A (GB)
Title: Improvements in or relating to perambulators and the like
IPC: B62B9/18
Filed: 1926-03-25
Abstract: 256,522. Simpson, J. J., and Dow, W. B. March 25, 1926. Bodies.-In perambulators and the like of the type in which the body overhangs the wheels, the side walls are recessed as at 2 to accommodate the running wheels 3. The recesses 2 are provided with a suitable mud-guard 4 secured by screws 5. The side walls 6 of the well 7 are continued downwards to hide the springs 8. Each running wheel 3 may be provided with a separate recess and mud-guard. Specification 254,595 is referred to.