baber/WOPTO huggingface dataset:
Patent GB-569418-A (GB)
Title: Absorption or adsorption refrigeration
IPC: F25B17/08
Filed: 1943-05-24
Abstract: 569,418. Refrigerating. KLEEN, N. E. AF. May 24. 1943, No. 8237. Convention date, June 6, 1942. [Class 29] Absorption systems.-A mixture of several absorbents which remain dry throughout the cycle of a reversing system and have different capacities for absorbing the refrigerant is employed, and the heat supply is regulated to generate the refrigerant from one or more or all of the absorbents, preferably in dependence on the ambient temperature and the temperature of the refrigerating cabinet. Dry absorbent salts mentioned are calcium chloride, strontium chloride and bromide, manganese chloride, lithium chloride and magnesium chloride, with ammonia or methylamine as refrigerant. A generator-absorber 30 containing the absorbent mixture is heated by an electric element 36, the periods being determined by a time switch 41. The intensity of the heat supply may be varied by a resistance 50 having a contact arm 51 adjusted by bellows members 57, 58 of thermal elements 59, 60 in the outer atmosphere and in a cabinet 35 respectively. A valve 40 in the cooling system of the generator-absorber is controlled by the time switch. Specification 353,903 is referred to.
Patent GB-225765-A (GB)
Title: Improvements in attachment for player and other pianos and the like
IPC: G10C3/02
Filed: 1924-04-01
Abstract: 225,765. Usbeck, G. F. April 1, 1924. Pianofortes combined with receptacles for music.-An attachment for player and other pianos for supporting music-rolls or the like comprises a vertical back member 11, Fig. 2. detachably attached to the bottom door under the keyboard by hooks 14, and a shelf member 12 hinged at 13 to the back member, the hinges being provided both with means to frictionally retain the shelf member raised as shown in dotted lines, and with a stop to support the shelf member in its lower position. Chains 17 may also support the shelf member, which remains inclined in both its extreme positions determined by the stop. The members 11, 12 are preferably faced with felt. Fig. 3 shows one of the hinges, each of which is composed of two members 22, 23 attached to the members 11, 12 and having superposed bosses 24, 25 riveted together, the outer boss of which has one depression 27 which engages frictionally in either of two depressions on the inner boss, and another depression 28 which forms the stop and moves in a slot 31 in the inner boss.
Patent GB-1420872-A (GB)
Title: Reversible plough mechanism
IPC: A01B3/421
Filed: 1973-02-26
Abstract: 1420872 Reversible plough mechanisms INTERNATIONAL HARVESTER CO 20 Feb 1973 [25 Feb 1972] 8300/73 Heading A1B A forecarriage unit 6 is mounted on the three-point hitch of a tractor and pivotally supports a shaft 3 fixed to a reversible portion 2 of a roll-over plough, a crank member 26 on the portion 2 being pivoted either directly at 40 (Fig. 3) or via a crank arm 131 (Fig. 8) to a double-acting jack 24, which itself is pivoted either via a crank arm 31 (Fig. 3) or directly at 143 (Fig. 8) to a mast 7 fixed to the forecarriage unit 6, a tension spring 37 (Fig. 3) or compression spring 138 (Fig. 8) acting to move th crank arm 31 or 131 toward's one or the other of two stops 35, 36 (Fig. 3) or 135, 136 (Fig. 8) so that the jack 24 is moved through its dead-centre position. The jack 24 may be reversed end for end, and the cylinder may be pivoted at its other end or intermediate its ends. A stop 18 on the forecarriage unit 6 is engaged by either of two dogs 16, 17 to define the two working positions of the plough. A pin 45 is pivoted on the crank member 26 and biassed to the vertical by a counterweight 49 so as to engage a notch 46 in the forecarriage unit 6 when the jack 24 is in its dead centre position to prevent back-swing of the portion 2. Operation (Fig. 3): Retraction of the jack 24 allows the tension spring 37 to move the crank arm 31 anticlockwise against the stop 35 and then rotates the crank member 26 until the axes of the pin 40, the shaft 3, and the spindle 29 lie in the same plane. At this moment, the jack 24 is fully retracted and the pin 45 engages the notch 46. Extension of the jack 24 causes the crank arm 31 to move clockwise away from the stop 35 until the axes of the shaft 3, the shaft 32 and the spindle 39 are in the same plane, and the jack 24 has passed through the dead-centre position. Operation (Fig. 8): Retraction of the jack 24 allows the compression spring 138 to swing the jack 24 clockwise about spindle 143 so swinging the crank arm 131 clockwise about its pivot pin 40 on the crank member 26 until its lug 135 abuts stud 137 on the crank member 26. Continued retraction of the jack 24 rotates the crank member 26 until spindle 143, pin 132, and shaft 3 are in the same plane. The jack 24 is in the fully retracted position and the pin 45 engages the notch 46. Extension of the jack 24 pivots the crank arm 131 anticlockwise about pin 40 until the spindle 143, pin 132 and pin 40 are in the same plane, and the jack 24 has passed through the dead-centre position.
Patent GB-100866-A (GB)
Title: Improvements in Mineral Washers.
Inventor: FRANCE ANTOINE
IPC: B03B5/68
Filed: 1915-08-03
Abstract: 100,866. France, A. Aug. 3, 1915. Upward-current classifiers.-Relates to mineral washers of the kind described in Specification 22655/12, in which a stream of water carries the minerals along a trough provided with flooded sorting-pockets. These may be of the form shown in Figs. 1 and 2, and supplied with water from inlets 4, 5, the trough 1 being provided with a pivoted plate 7 or an obstruction 15. All the discharge openings are provided with variable out. lets, such as by means of pivoted disks 25 formed with conical holes of different sizes. A reciprocating pin, which may be worked by a waterwheel in the trough 1, may be provided for keeping the outlet clear.
Patent GB-210320-A (GB)
Title: Improvements in or relating to safety appliances for mine cages and the like
IPC: B66B5/24
Filed: 1923-03-26
Abstract: 210,320. Blythe, W., and Bristol, W. March 26, 1923. Catch gear of mine-cage type.-In safety suspending apparatus of the kind in which when the hoisting rope breaks the guide ropes 9 are clamped to shoes 8 by cams 15 carried by spring- influenced pivoted levers 7, a shoulder 19 is formed in the shoe in order that the rope may be kinked. The shoes 8 are slidably mounted in the top of the cage and are connected to spring- influenced levers 20 mounted in the top of the cage and connected to the hoisting rope.
Patent GB-1122896-A (GB)
Title: Improvements in the preparation of vinyl chloride polymers and copolymers by suspension polymerisotion
IPC: C08F14/06
Filed: 1967-02-22
Abstract: The aqueous suspension polymerization of vinyl chloride is effected in the presence, as catalyst, of an alpha-halo-lauroyl peroxide of the formula R-C(XY)-CO-O-O-CO-C(XY)-R where X and Y are respectively hydrogen and halogen or are both halogen and R is a n-decyl radical or halogenated derivative. Homopolymers or copolymers with vinyl acetate, laurate or stearate, 1,1- or 1,2-dichloroethylene, trichloroethylene, propenychloride, chlorotrifluoroethylene, chloroprene or acrylonitrile can be prepared.  An amount of catalyst is added in terms of active oxygen of 0.001-0.1% of the monomer(s) and polymerization is effected at 5-35 DEG  C.  In the examples an ethyl hydroxyethyl cellulose and a polyvinylalcohol are used as suspending agents, and unreacted monomer is removed after stopping the polymerization.
Patent GB-956819-A (GB)
Title: Gas analyzing systems
IPC: G01N27/74
Filed: 1962-04-03
Abstract: 956, 819. Paramagnetic gas detectors. LEEDS & NORTHRUP CO. April 3, 1962 [April 17, 1961], No. 8529/63. Divided out of 956, 818. Drawings to Specification. Heading G1N. The Specification relates to the apparatus of Specification 956,818, and the claims are directed to the flush diverting means comprising a structure of high permeability, with means for moving it into a position adjacent the points of entry of the magnetic field into the measuring cell so as to divert the field from the cell during calibration. Specification 699,641 also is referred to.
Patent GB-849770-A (GB)
Title: Spring and grinding machine
IPC: B24B7/16
Filed: 1959-03-13
Abstract: 849,770. Grinding. HACK, K. March 13, 1959 [March 14, 1958], No. 8709/59. Class 60. A spring end grinding machine of the type comprising two parallel rotating grinding discs with means, e.g. a rotary carrier, for carrying the spring or springs between them so that the spring ends engage the grinding faces of the discs, in which at least one of the grinding discs is axially adjustable, is characterised in that each grinding disc is driven by an axially hollow shaft, one of which shafts penetrates into the other telescopically for relative axial movement and in that cooling medium is supplied to the discs through the axial bores in the respective shafts. The lower grinding disc 3<SP>1</SP> is mounted on a hollow shaft 1<SP>1</SP> driven by a motor 21 and within which is a hollow shaft 2<SP>1</SP> on which the upper grinding disc 4<SP>1</SP> is mounted. The shaft 1<SP>1</SP> has six keyways 5 two of which receive keys 26, 26<SP>1</SP> rotationally connecting thereto the axially adjustable shaft 2<SP>1</SP>. A bush 16<SP>1</SP> has channels 9<SP>1</SP> communicating with the keyways. Coolant supplied by a pump 14<SP>1</SP> through regulating valve 151 to the interior of the shaft 1<SP>1</SP> passes (a) through the keyways and channels 9<SP>1</SP> to the lower disc 3<SP>1</SP> and (b) through the interior of the shaft 2<SP>1</SP> and through passages 29, 30 to the upper disc 41, a deflecting plate 18<SP>1</SP> being provided.
Patent GB-416798-A (GB)
Title: Preheating the fuel supply to vaporisers for internal combustion engines
IPC: F02M31/18
Filed: 1933-03-23
Abstract: 416,798. Vaporizers. SMYTH, E. L., 166, Lisburn Road, Belfast. March 23, 1933, Nos. 8788, 8789, and 32466. [Class 7 (iii).] Exhaust or otherwise heated vaporizers for heavy fuel comprise a boiling or heating chamber wherein under normal loaded conditions a body of liquid fuel is maintained in contact with the heated walls of the chamber and means whereby, upon demand for fuel vapour being varied, e.g. by variation of throttle opening, the volume of said body and consequently the amount of liquid fuel in contact with heated parts of the chamber is automatically varied to vary the rate of vapour production in accordance with engine requirements. The fuel is fed to a boiling chamber 1, Fig. 1, by way of a float chamber 2 with extension 2a. The vapour produced passes a valve 4 into a mixing chamber 3 to which cool air is admitted by a suction-actuated valve 5 connected to valve 4. The mixture of vapour and air is controlled by a throttle valve 7. Engine suction produces a rise of fuel in chamber 1 and this rise brings into action a correspondingly greater area of heating surface. If the demand of the engine becomes less, e.g. due to closing the throttle 7, the fuel is removed by gravity or vapour pressure from chamber 1 into the extension 2a of the float chamber and loss of heat in the wall of the chamber is prevented. Air may be admitted directly to the boiling chamber by way of a pipe 8. The mixing chamber is insulated from heated parts of the apparatus. In a modification, Fig. 2 (not shown), the fuel flow to the boiling chamber is controlled by a needle valve actuated by the air valve, the vapour valve being dispensed with ; further, a non-return valve is provided between the lower end of the chamber and the float chamber to allow of return flow on reduced demand, but preventing flow other than past the needle valve. In a modification, Fig. 3 (not shown) a petrol carburetter is provided for starting, and hot air is added to the vapour before it reaches the cool air stream. The hot air, vapour, petrol and cool-air valves are interconnected. The boiling chamber has a superheating extension and is provided with a release valve to allow vapour to escape after a predetermined pressure has been reached. In a modification, Fig. 4 (not shown) the hot air is added to the vapour before it passes its control valve. In a further modification, Fig. 5, the apparatus has the boiling chamber 1, float chamber 2, extension 2a, needle valve 9 connected to air valve 5, vapour valve 4<a> and hot air valve 11a and superheater chamber 12 as in previous constructions. The modification consists in actuating the vapour valve 4a from throttle 7 through a dashpot comprising a spring 15 actuating a disc 16 in liquid in a pot 16a connected to valve 4<a> and loaded by a spring 17. In a still further modification, Fig. 6 (not shown), fuel is removed from the boiling chamber on decreased demand by a displacer piston connected to the throttle valve.
Patent GB-1380972-A (GB)
Title: Manufacture of polymers containing n-silyl groups which can be  shaped
IPC: D01F6/74
Filed: 1972-02-25
Abstract: 1380972 Silylated polyamides and polyamideacids CIBA-GEIGY AG 25 Feb 1972 [26 Feb 1971] 8837/72 Heading C3R Polymers containing N-silyl groups which are soluble in methylene chloride, cyclohexanone, tetrahydrofurane, N,N-dimethyl-form- or acetamide, dimethyl sulphoxide and N-methylpyrrolidone, have an inherent viscosity of 0À1 to 4À0 (0À5 g./100 ml. in dimethylacetamide/25‹ C.) and consisting substantially of identical or different recurring units  where A is a divalent organic radical; R is a radical containing a 5- or 6-membered ring with the carbonyl groups attached to different C atoms, each of X 1  and X 2  is H or (and at least one in at least one unit is) -SiR 1 R 2 R 3 ; each of R 1  to R 3  is a substituted or unsubstituted C 1-4  alkyl, cycloalkyl, aryl or aralkyl radical; M 1  and M 2  are each adjacent to a carbonamide group and are the same or different COOX 3  groups; X 3  is SiR 1 <SP>1</SP>.R 2 <SP>1</SP>.R 3 <SP>1</SP>; each of R 1 <SP>1</SP> to R 3 <SP>1</SP> is a substituted or unsubstituted C 1-12  alkyl, cycloalkyl, aryl aralkyl, C 1-4  alkoxy or aryloxy radical; and n 1  and n 2  are each 1 or 2, or such polymers wherein at least one of n 1  and n 2  is 2 and at least some units are cyclized to the corresponding imide, are obtained by reacting a polymer of the same formula wherein X 1  and X 2  are H and M 1  and M 2  are COOH and which has an I.V. of 0À2 to 4À0 with one of 6 defined classes of silylating agents in an amount sufficient to introduce -SiR 1 .R 2 .R 3  radicals into at least some of the -CONH 1  groups as well as all the COOH groups. In a modification a silylating agent introducing -SiR 1 <SP>1</SP>.R 2 <SP>1</SP>.R 3 <SP>1</SP> into the COOH group may be used in a preliminary reaction. The 6 classes of silylating agents, which are more precisely defined in the Specification, are (i) amides such as bis-trimethylsilyl acetamide and bis-trimethylsilyl-p-methoxy-benzamide; (ii) amines such as trimethylsilylamine, hexamethyldisilazane and N,N-bis-(trimethylsilyl)aniline; (iii) diamines such as 1,4-bis-(N- methyl - N - trimethylsilylamino) - benzene; (iv) O-substituted hydroxylamines such as N- methyl - N - ethoxy - trimethylsilylamine; (v) oxamides such as tetrakis-(triethylsilyl)- oxamide; and (vi) sulphates such as bis-(triphenylsilyl)sulphate. Further classes of silylating agents which may be used in the preliminary step of the modification are also defined. The silylated polyamide-acids are stated to be more soluble and of lower viscosity, and thus more readily processable that the unsilylated polyamide acids; they can, if desired, be disilylated after processing. Extensive lists are given of polyamide-acid forming reactants and silylating agents and also of possible additives and applications (being in general those conventional for polyamide-acids). Reference is made to Specification 1,380,973.
Patent GB-856653-A (GB)
Title: Heald frames for looms
IPC: D03C9/06
Filed: 1958-03-19
Abstract: 856,653. Heald frames. SULZER FRERES S.A. March 19, 1958 [March 30, 1957], No. 8854/58. Class 142(2). The top and bottom members 11 of a heald frame have abutment inserts 54 to which intermediate struts 26 are attached by screws 56 passing through cross pieces 52 integral with or rigidly fixed to the struts. The insert is recessed below the surface of the member 11 as shown; or the strut 26 protrudes through the cross piece and enters a  hole in the insert, which may stand proud of the member 11. The screws 56 may pass through open ended slots in the cross piece so that the strut can be detached without completely removing the screws. The screws may be so long that they encounter the heald bar 25 before they are completely unscrewed from the insert 54 or they may be provided with stops 59. The screws are such that, on tightening, their shanks stretch more than the threaded portion.
Patent GB-683671-A (GB)
Title: Improvements in or relating to brakes or clutches
Inventor: KELLER RUSSELL JACOB
IPC: F16D51/08
Filed: 1951-04-17
Abstract: 683,671. Friction clutches. GOODRICH CO., B. F. April 17, 1951, No. 8941/51. Class 80 (ii). [Also in Group XXXIV] In a clutch the. inner of two concentric members 10, 12 has an outwardly open peripheral channel for an expander tube 15, torque bars 24 bridging said channel, and a plurality of arcuate shoes 16 in said channel, said shoes having ends 21 of reduced thickness, retracting means 32 being disposed between said shoe ends and said torque bars, said channel having side openings 35 for removal of said retracting means and said shoes being individually removable by outward swinging movement with said retracting means removed. In the embodiment shown the retracting means comprise leaf springs 32. The channel is formed by cut-away side plates 17, 18 connected by bolts 25 passing through the torque bars 24. Each shoe is formed with passages 36 for cooling air and carries a removable metal sheet 41 attached to a friction lining 40.
Patent GB-346549-A (GB)
Title: Improvements in collapsible furniture
IPC: A47B43/02
Filed: 1930-03-20
Abstract: 346,549. Shelves; hat racks. LYONS & CO., Ltd., J., Cadby Hall, Kensington, London, WARREN, E. W., 108, District Road, Sudbury, Middlesex, and JOSEPH, B., 7, Oakwood Court, Shepherds Bush, London. March 20, 1930, No. 8942. [Classes 52 (i) and 52 (v).] A folding shelf structure for use as a hat and coat rack consists of centrally divided shelves f hinged to a pair of side members a<1>. The structure is held in its open position by a rail d, for coat &c. hangers, pivoted at one end to one side member, the free end engaging an eye h on the other side member. Clips v<2> and removable pans u<2> for umbrellas may be provided. Stiffening members c are hinged to the rear edges of the shelves and carrying hinged struts e<1>, the free ends of which detachably engage fasteners on one of the shelves.
Patent GB-754151-A (GB)
Title: Improvements in or relating to electric resistance thermometer units
IPC: G01K7/18
Filed: 1954-03-26
Abstract: 754,151. Resistance thermometers. BAILEY METERS & CONTROLS, Ltd. March 26, 1954 [March 26, 1953], No. 8952/54. Addition to 751,398. Class 40(1) In an electric resistance thermometer which comprises an elongated corrosion and heat resistant metal sheath a temperature sensitive resistance coaxial with the sheath and formed of wire insulated therefrom by an insulating heat conductive filling or granular refractory material sealed in the sheath and leads extending from the ends of the wire within the sheath through opposite ends of the sheath, as described in parent Specification; gas tight extension sheaths are provided for enclosing lengths of the leads extending from the sheath. The main sheath assembly 24, is constructed as described in the parent Specification, the resistance wire being of Mb, and stainless steel extension sheaths 29, 30 are fitted over and welded to the ends of sheath 24. Extension leads 27, 28 which are welded to leads 25, 26 are contained within sheaths 35, 36 of refractory material, the outer ends of the extension sheaths being sealed in a gas tight manner by plugs 33, 34 which also insulate the sheaths from the extension leads. The whole assembly is purged of air and filled with protective gas, e.g. N 2 , by introducing the latter under pressure through one of'the two capillaries 31, 32 silver soldered through holes in the sheath, after which the capillaries are sealed off. Alternatively sheath 24 is first filled with gas suitable for protecting the Mb wire, sealed off and each extension then filled with another gas through capillaries 31, 32 after evacuation therethrough. The thermometer may form part of an automatic self-balancing measuring bridge as in the parent Specification. In the Fig. 4 arrangement adaptors 50, 51 are welded to sheaths 29, 30 and to plate 52 which is welded to and forms the end of a protective pipe 53 containing the sheaths. Outer and inner members 54, 55 of a pipe coupling welded to 53 co-operate with a mounting pipe leading, e.g. to a furnace. The other end of pipe 53 is coupled to a standard terminal box by adaptor 56. A further mounting arrangement for use where sheath 24 is in a high pressure chamber is shown in Fig. 5.
Patent GB-1237848-A (GB)
Title: High frequency magnetic field polarisation apparatus
Inventor: CRAWFORD VICTOR GEORGE
IPC: H02N11/00
Filed: 1970-02-25
Abstract: 1,237,848. Dynamo-electric machines. V. G. CRAWFORD. 25 Feb., 1970, No. 8980/70. Heading H2A. The specification states that photo-electrons emitted from a central compartment A of a vehicle cause a magnetic field which repels the magnetic field of the Earth, whilst movement of the vehicle in a direction parallel with the surface of the Earth is provided by electrodes, shown dotted, placed on the outer rim and powered by three or more positively or negatively charged spherical condensers X, Y, Z. The rate of ascent or descent is controlled by varying the frequency of the electrons, and the velocity of motion is varied by the charges on the electrodes. The condensers are charged by concentric coils T1, T2 which are movable in either direction of rotation, and the underside of the vehicle may be statically charged by a further coil T3.
Patent GB-1007243-A (GB)
Title: Improvements in or relating to apparatus and method for welding a metal strip memberedgewise onto a metal tube member
IPC: B23K9/032
Filed: 1963-03-06
Abstract: 1,007,243. Making finned tubes; welding by pressure. OHIO CRANKSHAFT CO. March 6, 1963 [March 14, 1962], No. 8987/63. Headings B3A and B3R. In continuously welding a metal-strip member edgewise on to a metal-tube member, one of the members is inductively preheated, both members are conductively preheated and a current is passed between the members. A heat exchanger tube A is rotated to helically wind a strip B on edge thereon and a sliding or rolling contact 14 engages the underside of the strip and a sliding or rolling contact 16 engages the surface of the tube ahead of the point W of convergence of the strip and tube. Current of between 1 and 450 kc. per sec. is supplied from an alternator 34 through a conductor 32 and an inductor leg 36b on one side of the strip to contact 14 and through a conductor 30 and an inductor leg 36a on the other side of the strip and an inductor loop 38 adjacent the tube to the contact 16. Thus the strip and tube are inductively preheated and then conductively preheated before reaching the point W. The inductors may be arranged in parallel with contacts 14, 16 by providing separate leads to the alternator. Separate inductors and a power source for these inductors may be provided. The contacts 14, 16 may be supplied with D.C. current while the inductors are energized by high frequency current.