baber/WOPTO huggingface dataset:
Patent GB-672894-A (GB)
Title: Improvements in or relating to apparatus for joining together strips of carpet or other pile fabric
IPC: A47G27/04
Filed: 1949-02-18
Abstract: 672,894. Seaming non-metallic sheet material. MACKAY, L. H., and MACKAY, J. Feb. 7, 1950 [Feb. 18, 1949; May 27, 1949], Nos. 4511/49 and 14285/49. Class 42 (i). Apparatus, for joining strips of carpet or other fabric of the kind wherein a binding selvedge, formed by omitting pile along one edge is provided on a strip and is to be attached to an edge of an adjacent similar strip by overlapping and adhesively securing the binding selvedge and the edge of the adjacent strip, comprising a guide member for guiding an adhesiveapplying device and adapted to hold back the tufts at the edge of the binding selvedge to expose the selvedge and screen the tufts whilst adhesive is applied to the binding selvedge and the edge of the adjacent strip is attached thereto, the guide member comprising a rail adapted to be disposed above the pile adjacent the binding selvedge, and a lip on the rail adapted to depend in front of the pile, the rail being provided with a track to be engaged by and to guide an adhesive-applying device or a carriage therefor. As shown, strips of carpet 26, 27 are pinned to a supporting surface by pins 33 so that their edges overlap. Strip 27 is formed with a binding selvedge 30 free from pile tufts, and strip 26 has a piled selvedge 31, the backing material being of reduced thickness at both edges as described in Specification 661,345. Edge 31 is turned back and held so by weights 34, while a rail 21 is laid on the pile 29 of strip 27 so that a lip 22 presses back and screens the pile tufts adjacent selvedge 30. Rail 21 is retained in place by pivoted pins 55 and is provided with a longitudinal groove 52 adapted to guide the base 53 of a carriage 36 supporting an adhesive container 37 which deposits a ribbon of adhesive 35 on selvedge 30. Piled selvedge 31 is then replaced over selvedge 30 and rail 21 is withdrawn. Carriage 36 is moved along groove 52 by means of a handle 54. The adhesive may be latex, or one which sets under moderate heat and/or pressure, and may be applied by brush instead of by container 37. Specification 661,283 also is referred to in the Provisional Specifications.
Patent GB-964978-A (GB)
Title: Alumina preparation and product
IPC: C01F7/46
Filed: 1961-02-07
Abstract: The soda content of alumina is reduced by mixing the alumina with discreet particles of a siliceous material capable of reacting with soda while remaining in the solid phase, and heating the mixture to above 2100 DEG  F. but below the softening point of the material to form a solid, soda-containing compound of the latter and therafter recovering the treated alumina.  The siliceous material should contain from 10-100% silica and may be employed in the form of quartzite, sand, a silicate or an alkaline metal or aluminium silicate, or materials containing aluminium silicate such as porcelain, mullite, kiln brick, sillimanite, kyanite, nepheline syenite, calcined kaolin and shale; calcium silicate or magnesium silicate as forsterite or alumina refractory containing silica; for example a sintered alumina containing 10% silica may also be used. The alumina material is preferably washed with water at boiling point to remove as much as possible of the silica contaminant before effecting the purification It is preferable that the alumina, generally of 50-325 mesh size, is finer than the silica containing material, which maybe, for example, 20-30 mesh size and employed in amounts of 1-20% by weight of the alumina.  In addition to reducing the soda content to a low level, for example 0.02%, the alpha alumina content of the end product is increased. Separation of the alumina and the soda-retaining silica may be effected by screening or by methods based on specific gravity or electrostatic susceptibility. The separated siliceous material may be employed to remove soda from subsequent batches. Detailed examples compare the effect of the screen size of the silica, the purity of the silica and the effectiveness of re-use of silica in subsequent batches.  Further examples illustrate the effect of calcination time which may vary from a half to two hours, calcining temperatures which preferably lie in the range of 2300-2800 DEG F., and the effect of the moisture content of the furnace atmosphere which is conducive to the production of rod-shaped instead of spherical alumina crystals.
Patent GB-195498-A (GB)
Title: Improvements in submerged electro-plating, shaking, scouring and similar barrels
IPC: C25D17/20
Filed: 1922-02-16
Abstract: 195,498. Tubbs, F. R., and Breeden, F. V. Feb. 16, 1922. Rumbles and tumbling-barrels.-A submerged perforated container 7 for small articles to be electroplated, washed, or burnished is provided with a toothed wheel 22 gearing with a wheel 21 mounted in an arm 16 pivoted on a shaft 10 from which the wheel 21 is driven through wheels 23, 24 connected by a chain, belt or other flexible gearing. The arm 16 may be thrown back to allow removal of the container from the tank 4, its motion being limited by engagement of a stop 16<b> with the side of the tank or with a stop 25. The free end of the arm 16 is slotted to receive an adjustable bearing 18 in which the shaft 17 of the wheels 21, 24 is mounted. The wheel 21 is preferably of vulcanized fibre. The ends of the container spindle 6 are introduced into slotted metal plates 5a secured by brackets to the sides of the tank, the lower ends of the slots forming bearings.
Patent GB-727734-A (GB)
Title: Safety valve
Inventor: SPIDY ALEXANDER RONALD
IPC: F16K17/04
Filed: 1952-02-22
Abstract: 727,734. Valves. KIDDE CO., Ltd., W. Feb. 18, 1953 [Feb. 22, 1952], No. 4712/52. Class 135. A quick-opening safety valve for inflatable dinghies &c. consists of a valve disc 7 urged by a spring 8 against a seating constituted by an annular bead 6 formed integrally with the rubber &c. body 1. A stationary member 9 forming an abutment for the spring and a guide for the valve disc is held by a circlip 11 in a metal sleeve 3. Excess pressure raises the valve disc and, initially, also the annular bead 6 until the disc is moved further than the bead will deflect at the pressure obtaining, whereupon the reduction in the pressure difference across the bead due to the opening of the valve causes the bead to return to its initial position. Similarly, as the disc returns towards its seating on the bead the increasing pressure difference across the latter causes it to be deflected upwardly to meet the disc.
Patent GB-1000953-A (GB)
Title: Improvements in and relating to sound attenuators for jet engines
IPC: F01N1/08
Filed: 1962-02-07
Abstract: 1,000,953. Exhaust silencers. INDUSTRIAL ACOUSTICS CO. Inc. Feb. 7, 1962 [Feb. 8, 1961], No. 4803/62. Heading FIB. A silencer for jet engine exhaust gases, comprises baffles 30, Fig. 4, extending across a duct 11, the baffles forming closed compartments with inlet ports 26 and outlet orifices 28 through which some of the gas flows to produce jets at the orifices 28 which produce turbulence and reduce the noise in the main stream. The duct 11 is preferably of rectangular or oval section and the baffles are of streamlined shape arranged vertically in two staggered rows. A corrugated divider 31 divides the space inside the baffles into separate compartments and jet orifices may also be formed in the tapered trailing side of each baffle. The baffles are supported by saddle members 15, 15<SP>1</SP> on the duct walls.
Patent GB-238911-A (GB)
Title: Protective arrangement for a polyphase alternating electric current circuit and the like
IPC: H02H7/045
Filed: 1924-02-25
Abstract: 238,911. British Thomson-Houston Co., Ltd., and Fitzgerald, A. S. Feb. 25, 1924. Electric protective arrangements.-In balanced protective arrangements for star-delta transformers &c. windings are provided the energization of which is due only to earth faults on either side of the transformer so that greater sensitivity is obtained with earth than with inter-phase faults. As shown in Fig. 1 in which the neutral point 14 of the star-connected transformer winding 12 is earthed the delta-connected current transformers 18 on this side of the transformer are connected by leads 19 to the starconnected current-transformers 15 in the leads 13 passing to the delta-connected transformer windings 11. The primary windings 25 and series-connected restraining windings 24 of biassing transformers, of the type described in Specifications 193,434 and 216,254 are connected between equi-potential points of the protective system represented by the leads 19 and a common lead 23. Further series-connected windings 22 are wound in opposition to the windings 24 and are connected at one end to the lead 23 and at the other end through lead 21 to the neutral point of the transformers 15 which is also earthed at 16. The windings 22 may also be fed by a transformer 26 in the lead between the neutral point 14 and earth. This arrangement is such that with inter-phase faults the windings 22 are not energized and the restraint produced by the windings 24 on the action of the primary windings 25 is fully operative but with earth faults on either side of the transformer the consequent energization of the windings 23 destroys the restraint in one of the biassing transformers so that a comparatively sensitive operation of the relay is produced. In the modified arrangement shown in Fig. 2 in which the transformer star point is not earthed the windings 18 are connected to the leads 19 through windings 28 on the core 27 of a summation transformer, which also has a winding 29 between the leads 21 and 23. The windings 22 are fed from a winding 31 on the transformer core 27 which is only magnetized when an earth fault occurs. In a similar modification also described the above arrangement is combined with restraining means for preventing operation on balanced overloads due to unequal characteristics of the current transformers. In a further modification shown in Fig. 4 for use in cases where the neutral point may or may not be earthed the secondary winding 31 of the summation transformer is connected to a sensitive earth fault relay 42, an additional winding 41 being fed from the current transformer 26 and wound in opposition to the primary windings 28. In this form the interphase fault relays 25 are relatively insensitive.
Patent GB-1088813-A (GB)
Title: Packing rings for pipe connections
IPC: F16L19/10
Filed: 1966-02-03
Abstract: 1,088,813. Pipe couplings; stuffing-box packing. WYTWORNIA SPRZETU KOMUNIKACYJNEGO IM. BOLESLAWA KRZYWOUSTEGO. Feb. 3, 1966 [Feb. 8, 1965], No. 4882/66. Headings F2B and F2G. A sealing ring 3 for use with a coupling member 1 having an internal seating of cone angle 24 degrees, is formed with an external conical surface 6 of from <SP>1</SP>/ 3  to “ of the length I and at an angle of 9 to 12 degrees to the axis of the ring, and a front surface 5 disposed at an angle of 9 to 12 degrees to the normal to the axis of the ring; there is an internal, concave portion 8 of a length equal to twice the length of the surface 6.
Patent GB-483770-A (GB)
Title: Improvement in process for producing cement
IPC: C04B7/44
Filed: 1937-02-18
Abstract: A process for producing cement consists in first burning, at a temperature of about 1200 DEG  C. a charge which contains only part of the lime necessary for a normal Portland cement, mixing the clinker produced with the rest of the lime and with additional sesquioxides, e.g. Al2O3, if necessary, grinding, and reburning at a temperature of about 1400-1500 DEG  C.  The first charge may consist substantially of only carbonate of lime and silica, the product being mainly dicalcium silicate.  In an example a charge consisting of 75-80 parts of CaCO3 and 22 parts of SiO3 is burnt at 1200 DEG  C. for about 10 mins.  The product is mixed with a further 40 parts of CaCO3 and 8 parts R2O3 and the mixture is reburnt at 1400-1500 DEG C. for about 10 mins.  The invention may also be applied to the production of alumina cements, part of the lime being added to bauxite for carrying out the first step, the product being ground, mixed with the rest of the lime and reburnt.
Patent GB-621349-A (GB)
Title: Improvements in and relating to means for distributing fertilisers and other granular materials in agriculture
IPC: A01C15/14
Filed: 1947-02-20
Abstract: 621,349. Manure distributers. HAMBLIN, H. J., and RAYBOULD, F. W. Feb. 20. 1947, No. 4976. [Class 6(i)] A fertilizer distributer comprises a rectangular container 1 having rigid side and end walls 2, 3, and having arranged within its walls a looped sheet 4 of flexible material providing a base for supporting the fertilizer 5, means being provided for reducing the effective length of the loop in order to maintain the upper surface of the fertilizer level with the top of the container where it is operated upon by a vaned distributer 6 rotating about a horizontal axis. The sheet is fixed at one end 7 to one of the side walls of the container and the other end 8 is connected to a bogie 9 comprising pulleys 11 joined by an endless chain 12 which also passes around intermediate sprockets 13. The sprockets 13 are mounted on shafts 14 which are driven by the land wheels of the carriage on which the distributer is mounted so that the bogie is advanced during the forward traverse of the carriage to reduce the effective length of the band as the fertilizer is ejected from the container.
Patent GB-845646-A (GB)
Title: Interrupters for electric spark ignition coils
Inventor: WHITEHOUSE HAROLD ERNEST
Filed: 1958-02-17
Abstract: 845,646. Rotary distributers. LUCAS (INDUSTRIES) Ltd., J. Feb. 16, 1959 [Feb. 17, 1958], No. 5032/58. Class 38 (5). [Also in Group XXV] A distributer 5 is secured for timing adjustment to a socket 3 secured to or forming part of an I.C. engine by two spring-loaded wedges 8 retractable by a tool inserted in the bores 7.
Patent GB-309830-A (GB)
Title: Improvements in mechanical kilns
IPC: C22B1/14
Filed: 1928-04-14
Abstract: 309,830. Balz-Erzr÷stung Ges., and Balz, G. April 14, 1928. Divided on 317,341 and addition to 288,823. Roasting-furnaces. -In the mechanical roasting-furnace described in the parent Specification the roasted ore is discharged into a hopper-like chamber 4, in which it is subjected to an air blast from a perforated pipe '74. The chamber may have a control discharge aperture controlled by a door 73, as shown, or the discharge apparatus may be laterally arranged. The perforations in the pipe 74 are so situated that the air is delivered upwards into the ore.
Patent GB-1281813-A (GB)
Title: Cycloalkylidenebutanols and their use in perfume compositions
IPC: C07C47/225
Filed: 1970-02-03
Abstract: 1281813 Perfumes CHEMISCHE FABRIEK NAARDEN NV 3 Feb 1970 [4 Feb 1969] 5163/70 Heading A5B [Also in Division C2] Cycloalkylidine butanols of general formula in which A with the carbon atoms C 1 , C 2  and C 3  form a cyclic system which may be monocyclic or polycyclic and may carry one or more alkyl groups on the residue A; and R 1 -R 4  one hydrogen atoms or C 1 -C 5  alkyl groups, with the exception that at least one of R 1 -R 4  represents an alkyl group when A is a 1,2- ethylidene or 1,3-propylidene group are used as active agents in perfume compositions.
Patent GB-562744-A (GB)
Title: Improvements in or relating to fluid-blast electric circuit breakers
IPC: H01H33/70
Filed: 1943-03-31
Abstract: 562,744. Fluid blast switches. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. March 31, 1943, No. 5177. Convention date, March 31,1942. [Class 38 (v)] A liquid or gas-blast switch wherein the blast is directed through a passage or vent leading from an arcing-chamber, has means for moving the are away from the vent or passage during relatively high instantaneous values of current, whereby the arc, which cannot well be extinguished at such values, does not impede the flow of blast-medium, but is allowed to return to the vent neighbourhood at relatively low current values and be acted upon by the blast so as to be quenched at current minima. In Fig. 1, series-connected movable contacts 8, 9 are separable from fixed contacts 6, 5 adjacent vents 3, 2 in a casing 1, the current direction being shown at 33. The repulsion between the parts 37, 38, respectively, of the bridge member 7 and the arcs 35, 36 causes the latter at high current values to assume the positions 39, 40 laterally of the vents, whereby the pressure exhausts through the latter unimpeded by the arcs. At low current values, the arcs return to the normal positions and are readily extinguished by the blast. The latter is assisted by a piston member 21 operating member 7 through crank 15 and rod 11. In Fig. 3, main contacts 49, 53 and arcing contacts 51, 55 are mounted on opposite ends of bridge members 45, 47 which are free to pivot slightly on the operating rod 43 and are urged upwards against stops 79, 81 by springs 71, 73 bearing on washers 75, 77 fast on rod 43. The main current paths from contacts 57, 61 to bridges 45, 47 open first and divert the current to the arcing contacts by way of conductors 101, 103, the circuit in both cases being completed by flexible conductors 69, 70. Conductors 101, 103 make half-circles about the vents 83, 85 so as to divert the arcs 107, 109 laterally of the latter. The rod 43 carries a pin 91 which, in closing, engages a spring piston 87 which augments the blast due to low currents and with high currents scavenges the arc-chamber after arcextinction. Magnetic material may be employed adjacent the are, for example, embedded in the casing, Fig. 9 (not shown), or, Fig. 11, in the form of a partial cylinder 157 on the exterior so as to direct the single arc 149 between contacts 151, 153 to position 158 in which an insulating barrier 159 prevents further movement. Alternatively, a series coil may be arranged outside and coaxia,l with the vent, Fig. 15 (not shown). A U-shaped bridge 165, Fig. 13, co-operates with fixed contacts 167, 169, of which the latter is connected to terminal 179 by a conductor 171. which is divided to form parallel paths about the outlet of the single vent 185, the are 183 being thereby moved to position 184, notwithstanding the opposing force due to arc 181 at contact 167. In another form utilizing a U-shaped bridge, the mutual repulsion causes the two arcs to move away from one another laterally of the associated vents; Fig. 7 (not shown).
Patent GB-159181-A (GB)
Title: Improvements in or relating to carburettors for internal-combustion motors
IPC: F02M1/00
Filed: 1921-02-15
Abstract: 159,181. Heinl, F. Feb. 17, 1920, [Convention date]. S p r a y carburettors; vaporizers, external; heating charge.-In carburetting - apparatus employing naphthalene as the fuel, starting is effected by a liquid fuel, the air supply is heated and the naphthalene melted by exhaust gases and the naphthalene nozzle is surrounded by a hot air pipe. The carburettor, Fig. 2, comprises a liquid fuel nozzle 2 and a naphthalene nozzle 3 surrounded by a pipe 12 to which heated air is supplied. The naphthalene float chamber is jacketed at 14. The air heating device 15, Fig. 1, comprises a casing enclosing tubes. Exhaust gases enter at 16, pass through the tubes and leave at 18 and heat air entering at 20, passing over the tubes and leaving at 21 for the pipe 22 and carburettor intake. Some air mav enter a tube 23 and pass through a tube 25 to the pipe 12. Some of the exhaust may pass through a pipe 40 to the jacket 14, Fig. 2. The exhaust gases leaving the air-heating chamber pass through a pipe 19 to a coil 26 in a chamber 7 containing the naphthalene which on being melted passes through an exhaust heated pipe 9 to the nozzle 3, Fig. 2. Cold air may be admitted to pipe 22 through a valve-controlled inlet 27. The Specification as open to inspection under Sect, 91 (3) (a) describes also constructions of joints for concentric tubes conveying heated and heating media. One construction is shown in Fig. 4 (Cancelled), in which the inner and outer pipes are provided with end pieces A, B perforated to continue the passages through the pipes and forced together by a single connecting piece. The pipe R2 is forced against the end piece B on pipe r2 the conical portion of which in turn is forced against the end piece A of pipes R1, r1. In a modification, the end pieces are soldered to the pipes, their inner and outer ends forming normal butt joints. In a further modification a rightangled joint is described, a single hollow screwed rod forming the connecting means and part of the inner pipe. This subject-matter does not appear in the Specification as accepted.
Patent GB-877139-A (GB)
Title: A process for the production of alpha, beta-unsaturated alcohols with more than three carbon atoms
IPC: C07C33/02
Filed: 1960-02-15
Abstract: a ,b -unsaturated alcohols are prepared by heating an epoxide of the formula <FORM:0877139/IV (b)/1> in which R1 is alkyl, R2, R3, R4 and R5 are hydrogen, alkyl, aryl, aralkyl, cycloalkyl or alkoxy groups and X represents a group (CH2)n (n being a whole number) or an unsaturated hydrocarbon chain, at a temperature of 200-400 DEG C. in the presence of trilithium phosphate.  In the examples 1.2-epoxyoctane, epoxycyclododecane, epoxycyclododecadiene-(5.9) are converted to 1-hydroxyoctene-(2), 1-hydroxycyclododecene-(2) and 1-hydroxycyclododecatriene-(2.5.9) respectively.  Other epoxides mentioned as starting materials are 1.2-epoxybutane, 2.3-epoxybutane, 1.2-epoxycyclohexane and 1.2-epoxy-3-phenylpropane.  Specification 877,138 is referred to.
Patent GB-534595-A (GB)
Title: Improvements in or relating to colour filter holders for optical projection apparatus
IPC: G03B27/73
Filed: 1940-03-21
Abstract: 534,595. Optical-projection and photographic projection printing apparatus. KODAK, Ltd. March 21, 1940, No. 5286. Convention date, June 17, 1939. [Classes 97 (i) and 98 (i)] A filter holder movably mounted on a projection apparatus so that anyone of three equally-spaced filters carried by it may brought into the path of the light has a pair of surfaces each of which, by engaging an abutment on the apparatus, positively positions one of the end filters, the intermediate filter being positioned by a member movably carried on the holder and having a pair of surfaces engaging the abutment, this member moving with the holder when holder is moved to bring the intermediate filter into position and being moved relatively to the holder by the abutment when the holder is moved through the central position. As shown, the holder comprises two apertured sector-shaped plates secured together with the filters between them, and is pivoted on a rod 26 extending downwardly from the lens carrier of a vertical photographic projection printing apparatus. Shoulders 28, 29 on the holder alternatively engage the rod 12 extending downwardly from the apparatus to locate the holder with one of the end filters beneath the lens. To locate the central filter, a washer 23 held between the plates and pivoting on the rod 26 is formed with shoulders 30, 31 to engage the rod 12 and with a boss 27 which engages one of the plates so that the washer moves with considerable friction relatively to the plates. As shown, the filter R is in position beneath the lens, and in order to bring the central filter G into position, the holder is swung clockwise until the shoulder 30 on the washer contacts with the rod 12. To position the end filter B the movement is continued, the holder moving relatively to the washer against the frictional resistance until the shoulder 28 contacts with the rod 12.